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Check documentation for full details: https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/blob/master/Protocols_Details.md#FRSKY_RX---55

.travis.yml

@@ -1,8 +1,7 @@
-dist: trusty
+dist: bionic
 sudo: true
-  #
 language: c
-  #
+
 env:
   global:
     - IDE_VERSION=1.8.9
@@ -13,39 +12,18 @@ env:
     - BOARD="multi4in1:STM32F1:multistm32f103c:debug_option=none"
     - BOARD="multi4in1:STM32F1:multistm32f103c:debug_option=native"
     - BOARD="multi4in1:STM32F1:multistm32f103c:debug_option=ftdi"
-    #
+
 notifications:
   email: false
-  #
+
 before_install:
-  #
   # Fetch the tag information for the current branch
   - git fetch origin --tags
-  #
+
   # Publish the buildroot script folder
   - chmod +x ${TRAVIS_BUILD_DIR}/buildroot/bin/*
   - export PATH=${TRAVIS_BUILD_DIR}/buildroot/bin/:${PATH}
-  #
-  # Install Arduino IDE
-  - wget http://downloads.arduino.cc/arduino-$IDE_VERSION-linux64.tar.xz
-  - tar xf arduino-$IDE_VERSION-linux64.tar.xz
-  - mv arduino-$IDE_VERSION $HOME/arduino-ide
-  - export PATH=$PATH:$HOME/arduino-ide
-  # Set the Multi boards package URL
-  - arduino --pref "boardsmanager.additional.urls=https://raw.githubusercontent.com/pascallanger/DIY-Multiprotocol-TX-Module-Boards/master/package_multi_4in1_board_index.json" --save-prefs
-  #
-  - if [[ "$BOARD" =~ "multi4in1:STM32F1:" ]]; then
-      arduino --install-boards multi4in1:STM32F1;
-    fi
-  #
-  - if [[ "$BOARD" =~ "multi4in1:avr:" ]]; then
-      arduino --install-boards multi4in1:avr;
-    fi
-  #
-  - buildMulti() { start_fold config_diff; travis_time_start; git diff Multiprotocol/_Config.h; end_fold config_diff; exitcode=0; BUILDCMD="arduino --verify --board $BOARD Multiprotocol/Multiprotocol.ino --pref build.path=./build/"; echo $BUILDCMD; $BUILDCMD; if [ $? -ne 0 ]; then exitcode=1; fi; echo; return $exitcode; }
-  - buildProtocol() { exitcode=0; opt_disable $ALL_PROTOCOLS; opt_enable $1; buildMulti; if [ $? -ne 0 ]; then exitcode=1; fi; return $exitcode; }
-  - buildEachProtocol() { exitcodesum=0; for PROTOCOL in $ALL_PROTOCOLS ; do printf "\e[33;1mBuilding $PROTOCOL\e[0m"; buildProtocol $PROTOCOL; if [ $? -ne 0 ]; then exitcodesum=$((exitcodesum + 1)); fi; done; return $exitcodesum; }
-  #
+
   # Arduino IDE adds a lot of noise caused by network traffic; firewall it
   - sudo iptables -P INPUT DROP
   - sudo iptables -P FORWARD DROP
@@ -53,16 +31,257 @@ before_install:
   - sudo iptables -A INPUT -i lo -j ACCEPT
   - sudo iptables -A OUTPUT -o lo -j ACCEPT
   - sudo iptables -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
-  #
-install: true
+
+  # Helper functions for the builds
+  - buildMulti() { start_fold config_diff; travis_time_start; git diff Multiprotocol/_Config.h; end_fold config_diff; exitcode=0; BUILDCMD="arduino --verify --board $BOARD Multiprotocol/Multiprotocol.ino --pref build.path=./build/"; echo $BUILDCMD; $BUILDCMD; if [ $? -ne 0 ]; then exitcode=1; fi; echo; return $exitcode; }
+  - buildProtocol() { exitcode=0; opt_disable $ALL_PROTOCOLS; opt_enable $1; buildMulti; if [ $? -ne 0 ]; then exitcode=1; fi; return $exitcode; }
+  - buildEachProtocol() { exitcodesum=0; for PROTOCOL in $ALL_PROTOCOLS ; do printf "\e[33;1mBuilding $PROTOCOL\e[0m"; buildProtocol $PROTOCOL; if [ $? -ne 0 ]; then exitcodesum=$((exitcodesum + 1)); fi; done; return $exitcodesum; }
+  - buildRFModule() { exitcode=0; opt_disable $ALL_RFMODULES; opt_enable $1; buildMulti; if [ $? -ne 0 ]; then exitcode=1; fi; return $exitcode; }
+  - buildEachRFModule() { exitcodesum=0; for RFMODULE in $ALL_RFMODULES; do printf "\e[33;1mBuilding $RFMODULE\e[0m"; buildRFModule $RFMODULE; if [ $? -ne 0 ]; then exitcodesum=$((exitcodesum + 1)); fi; done; return $exitcodesum; }
+  - buildDefault() { exitcode=0; printf "\n\e[33;1mBuilding default configuration\e[0m\n"; buildMulti; if [ $? -ne 0 ]; then exitcode=1; fi; return $exitcode; }
+  - buildSerialOnly() { exitcode=0; printf "\n\e[33;1mBuilding serial mode only\e[0m\n"; opt_disable ENABLE_PPM; opt_enable ENABLE_SERIAL; buildMulti; if [ $? -ne 0 ]; then exitcode=1; fi; return $exitcode; }
+  - buildPPMOnly() { exitcode=0; printf "\n\e[33;1mBuilding PPM mode only\e[0m\n"; opt_enable ENABLE_PPM; opt_disable ENABLE_SERIAL; buildMulti; if [ $? -ne 0 ]; then exitcode=1; fi; return $exitcode; }
+
+  # Function to build the release files - dependent on board type
+  - if [[ "$BOARD" == "multi4in1:avr:multixmega32d4" ]]; then
+      buildReleaseFiles(){
+        exitcode=0;
+        printf "\n\e[33;1mBuilding multi-orangerx-aetr-green-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_enable $ALL_PROTOCOLS;
+        opt_disable ORANGE_TX_BLUE;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-orangerx-aetr-green-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-orangerx-aetr-blue-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_enable ORANGE_TX_BLUE;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-orangerx-aetr-blue-inv-v$MULTI_VERSION.bin;
+        cp Multiprotocol/Multi.txt ./binaries/Multi.txt; 
+        return $exitcode; };
+    elif [[ "$BOARD" == "multi4in1:avr:multiatmega328p:bootloader=none" ]]; then
+      buildReleaseFiles(){
+        printf "\n\e[33;1mBuilding multi-avr-usbasp-aetr-A7105-inv-v$MULTI_VERSION.bin\e[0m";
+        exitcode=0;
+        opt_disable CHECK_FOR_BOOTLOADER;
+        opt_disable $ALL_PROTOCOLS;
+        opt_enable $A7105_PROTOCOLS;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-avr-usbasp-aetr-A7105-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-avr-usbasp-aetr-CC2500-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_disable $ALL_PROTOCOLS;
+        opt_enable $CC2500_PROTOCOLS;
+        buildMulti;
+        mv build/Multiprotocol.ino.bin ./binaries/multi-avr-usbasp-aetr-CC2500-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-avr-usbasp-aetr-CYRF6936-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_disable $ALL_PROTOCOLS;
+        opt_enable $CYRF6936_PROTOCOLS;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-avr-usbasp-aetr-CYRF6936-inv-v$MULTI_VERSION.bin; 
+        return $exitcode; };
+    elif [[ "$BOARD" == "multi4in1:avr:multiatmega328p:bootloader=optiboot" ]]; then
+      buildReleaseFiles(){
+        printf "\n\e[33;1mBuilding multi-avr-txflash-aetr-A7105-inv-v$MULTI_VERSION.bin\e[0m";
+        exitcode=0;
+        opt_enable CHECK_FOR_BOOTLOADER;
+        opt_disable $ALL_PROTOCOLS;
+        opt_enable $A7105_PROTOCOLS;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-avr-txflash-aetr-A7105-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-avr-txflash-aetr-CC2500-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_disable $ALL_PROTOCOLS;
+        opt_enable $CC2500_PROTOCOLS;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-avr-txflash-aetr-CC2500-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-avr-txflash-aetr-CYRF6936-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_disable $ALL_PROTOCOLS;
+        opt_enable $CYRF6936_PROTOCOLS;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-avr-txflash-aetr-CYRF6936-inv-v$MULTI_VERSION.bin; 
+        return $exitcode; };
+    elif [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=none" ]]; then
+      buildReleaseFiles(){
+        printf "\n\e[33;1mBuilding multi-stm-erskytx-aetr-inv-v$MULTI_VERSION.bin\e[0m";
+        exitcode=0;
+        opt_enable CHECK_FOR_BOOTLOADER;
+        opt_enable $ALL_PROTOCOLS;
+        opt_enable MULTI_STATUS;
+        opt_disable MULTI_TELEMETRY;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-aetr-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-erskytx-taer-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace AETR TAER;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-taer-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-erskytx-reta-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace TAER RETA;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-reta-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-erskytx-aetr-noinv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace RETA AETR;
+        opt_disable INVERT_TELEMETRY;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-aetr-noinv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-erskytx-taer-noinv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace AETR TAER;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-taer-noinv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-erskytx-reta-noinv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace TAER RETA;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-reta-noinv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-opentx-aetr-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace RETA AETR;
+        opt_disable MULTI_STATUS;
+        opt_enable MULTI_TELEMETRY;
+        opt_enable INVERT_TELEMETRY;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-aetr-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-opentx-taer-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace AETR TAER;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-taer-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-opentx-reta-inv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace TAER RETA;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-reta-inv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-opentx-aetr-noinv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace RETA AETR;
+        opt_disable INVERT_TELEMETRY;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-aetr-noinv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-opentx-taer-noinv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace AETR TAER;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-taer-noinv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-opentx-reta-noinv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace TAER RETA;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-reta-noinv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-ppm-aetr-noinv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace RETA AETR;
+        opt_disable MULTI_STATUS;
+        opt_disable MULTI_TELEMETRY;
+        opt_set NBR_BANKS 5;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-ppm-aetr-noinv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-ppm-taer-noinv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace AETR TAER;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-ppm-taer-noinv-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-ppm-reta-noinv-v$MULTI_VERSION.bin\e[0m";
+        opt_replace TAER RETA;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-ppm-reta-noinv-v$MULTI_VERSION.bin; 
+        return $exitcode; };
+    elif [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=native" ]]; then
+      buildReleaseFiles(){
+        printf "\n\e[33;1mBuilding multi-stm-erskytx-xn297dump-inv-usbdebug-v$MULTI_VERSION.bin\e[0m";
+        exitcode=0;
+        opt_enable CHECK_FOR_BOOTLOADER;
+        opt_disable $ALL_PROTOCOLS;
+        opt_add XN297DUMP_NRF24L01_INO;
+        opt_enable MULTI_STATUS;
+        opt_disable MULTI_TELEMETRY;
+        opt_enable INVERT_TELEMETRY;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-xn297dump-inv-usbdebug-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-opentx-xn297dump-inv-usbdebug-v$MULTI_VERSION.bin\e[0m";
+        opt_disable $ALL_PROTOCOLS;
+        opt_disable MULTI_STATUS;
+        opt_enable MULTI_TELEMETRY;
+        opt_enable INVERT_TELEMETRY;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-xn297dump-inv-usbdebug-v$MULTI_VERSION.bin;
+        return $exitcode; };
+    elif [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=ftdi" ]]; then
+      buildReleaseFiles(){
+        printf "\n\e[33;1mBuilding multi-stm-erskytx-xn297dump-inv-ftdidebug-v$MULTI_VERSION.bin\e[0m";
+        exitcode=0;
+        opt_enable CHECK_FOR_BOOTLOADER;
+        opt_disable $ALL_PROTOCOLS;
+        opt_add XN297DUMP_NRF24L01_INO;
+        opt_enable MULTI_STATUS;
+        opt_disable MULTI_TELEMETRY;
+        opt_enable INVERT_TELEMETRY;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-xn297dump-inv-ftdidebug-v$MULTI_VERSION.bin;
+        printf "\n\e[33;1mBuilding multi-stm-opentx-xn297dump-inv-ftdidebug-v$MULTI_VERSION.bin\e[0m";
+        opt_disable $ALL_PROTOCOLS;
+        opt_disable MULTI_STATUS;
+        opt_enable MULTI_TELEMETRY;
+        opt_enable INVERT_TELEMETRY;
+        buildMulti;
+        exitcode=$((exitcode+$?));
+        mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-xn297dump-inv-ftdidebug-v$MULTI_VERSION.bin;
+        return $exitcode; };
+    else
+      buildReleaseFiles() { echo "No release files for this board."; };
+    fi
+
+install:
+  # Install Arduino IDE
+  - wget http://downloads.arduino.cc/arduino-$IDE_VERSION-linux64.tar.xz
+  - tar xf arduino-$IDE_VERSION-linux64.tar.xz
+  - mv arduino-$IDE_VERSION $HOME/arduino-ide
+  - export PATH=$PATH:$HOME/arduino-ide
+
+  # Set the Multi boards package URL
+  - arduino --pref "boardsmanager.additional.urls=https://raw.githubusercontent.com/pascallanger/DIY-Multiprotocol-TX-Module-Boards/master/package_multi_4in1_board_index.json" --save-prefs
+
+  # Install the STM32 board if needed
+  - if [[ "$BOARD" =~ "multi4in1:STM32F1:" ]]; then
+      arduino --install-boards multi4in1:STM32F1;
+    fi
+
+  # Install the AVR board if needed
+  - if [[ "$BOARD" =~ "multi4in1:avr:" ]]; then
+      arduino --install-boards multi4in1:avr;
+    fi
+
 before_script:
-  #
   # Change current working directory to the build dir
   - cd ${TRAVIS_BUILD_DIR}
+
+  # Create somwhere to put the exported binaries
+  - mkdir ./binaries
+
   # Log the initial Multi config 
   - cat Multiprotocol/_Config.h
+
   # Back up the configuration
   - cp Multiprotocol/_Config.h ./_Config.h.bak
+
+  # Get the firmware version number from the source
+  - MAJOR_VERSION=$(grep "VERSION_MAJOR" "Multiprotocol/Multiprotocol.h" | awk -v N=3 '{gsub(/\r/,""); print $N}')
+  - MINOR_VERSION=$(grep "VERSION_MINOR" "Multiprotocol/Multiprotocol.h" | awk -v N=3 '{gsub(/\r/,""); print $N}')
+  - REVISION_VERSION=$(grep "VERSION_REVISION" "Multiprotocol//Multiprotocol.h" | awk -v N=3 '{gsub(/\r/,""); print $N}')
+  - PATCH_VERSION=$(grep "VERSION_PATCH" "Multiprotocol//Multiprotocol.h" | awk -v N=3 '{gsub(/\r/,""); print $N}')
+  - MULTI_VERSION=$MAJOR_VERSION.$MINOR_VERSION.$REVISION_VERSION.$PATCH_VERSION
+
   # Derive the Multi protocols from the Multi source
   - A7105_PROTOCOLS=$(sed -n 's/[\/\/]*[[:blank:]]*#define[[:blank:]]*\([[:alnum:]_]*_A7105_INO\)\(.*\)/\1/p' Multiprotocol/_Config.h)
   - CC2500_PROTOCOLS=$(sed -n 's/[\/\/]*[[:blank:]]*#define[[:blank:]]*\([[:alnum:]_]*_CC2500_INO\)\(.*\)/\1/p' Multiprotocol/_Config.h)
@@ -74,204 +293,64 @@ before_script:
       ALL_PROTOCOLS=$(echo $A7105_PROTOCOLS $CC2500_PROTOCOLS $CYRF6936_PROTOCOLS $NRF24L01_PROTOCOLS);
     fi
   - echo $ALL_PROTOCOLS
-  #
+
+  # Declare all the installed modules
+  - ALL_RFMODULES=$(echo A7105_INSTALLED CYRF6936_INSTALLED CC2500_INSTALLED NRF24L01_INSTALLED);
+
   # Disable CHECK_FOR_BOOTLOADER when not needed
   - if [[ "$BOARD" == "multi4in1:avr:multiatmega328p:bootloader=none" ]]; then
       opt_disable CHECK_FOR_BOOTLOADER;
     fi
-  #
-  # Trim the build down for the Atmega328p board
+
+  # Trim the enabled protocols down for the STM32 board with debugging
+  - if [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=ftdi" ]] || [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=native" ]]; then
+      opt_disable $ALL_PROTOCOLS;
+      opt_enable FRSKYX_CC2500_INO AFHDS2A_A7105_INO MJXQ_NRF24L01_INO DSM_CYRF6936_INO;
+    fi
+
+  # Trim the enabled protocols down for the Atmega328p board
   - if [[ "$BOARD" =~ "multi4in1:avr:multiatmega328p:" ]]; then
       opt_disable $ALL_PROTOCOLS;
       opt_enable FRSKYX_CC2500_INO AFHDS2A_A7105_INO MJXQ_NRF24L01_INO DSM_CYRF6936_INO;
     fi
-  #
+
+  # Useful Travis functions
   - export -f travis_fold
   - export -f travis_nanoseconds
   - export -f travis_time_start
   - export -f travis_time_finish
   - start_fold() { echo -e "travis_fold:start:$1"; }
   - end_fold() { echo -e "\ntravis_fold:end:$1\r"; }
+
 script:
-  # Build with all protocols enabled for STM32; a subset of protocols for Atmega
-  - buildMulti
-  #
+  # Build with default configuration - all protocols are enabled for STM32; a subset of protocols for Atmega or STM32 debugging
+  - buildDefault
+
   # Serial only
-  - opt_disable ENABLE_PPM
-  - opt_enable ENABLE_SERIAL
-  - buildMulti
-  #
+  - buildSerialOnly
+
   # PPM only
-  - opt_enable ENABLE_PPM
-  - opt_disable ENABLE_SERIAL
-  - buildMulti
-  #
+  - buildPPMOnly
+
   # Re-enable PPM and serial
   - opt_enable ENABLE_SERIAL
   - opt_enable ENABLE_PPM
-  #
-  # Build each protocol individually
-  - buildEachProtocol
-before_deploy:
-  # Create somwhere to put the binaries
-  - mkdir ./binaries
+
+  # Build for each RF module individually
+  - buildEachRFModule
+
   # Restore the default configuration
   - cp ./_Config.h.bak Multiprotocol/_Config.h
-  # Build the release files for OrangeRX
-  - if [[ "$BOARD" == "multi4in1:avr:multixmega32d4" ]]; then
-      printf "\n\e[33;1mBuilding multi-orangerx-aetr-green-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_enable $ALL_PROTOCOLS;
-      opt_disable ORANGE_TX_BLUE;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-orangerx-aetr-green-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-orangerx-aetr-blue-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_enable ORANGE_TX_BLUE;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-orangerx-aetr-blue-inv-$TRAVIS_TAG.bin;
-      cp Multiprotocol/Multi.txt ./binaries/Multi.txt;
-    fi
-  # Build the release files for AVR without bootloader
-  - if [[ "$BOARD" == "multi4in1:avr:multiatmega328p:bootloader=none" ]]; then
-      printf "\n\e[33;1mBuilding multi-avr-usbasp-aetr-A7105-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_disable CHECK_FOR_BOOTLOADER;
-      opt_disable $ALL_PROTOCOLS;
-      opt_enable $A7105_PROTOCOLS;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-avr-usbasp-aetr-A7105-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-avr-usbasp-aetr-CC2500-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_disable $ALL_PROTOCOLS;
-      opt_enable $CC2500_PROTOCOLS;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-avr-usbasp-aetr-CC2500-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-avr-usbasp-aetr-CYRF6936-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_disable $ALL_PROTOCOLS;
-      opt_enable $CYRF6936_PROTOCOLS;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-avr-usbasp-aetr-CYRF6936-inv-$TRAVIS_TAG.bin;
-    fi
-  # Build the release files for AVR with bootloader
-  - if [[ "$BOARD" == "multi4in1:avr:multiatmega328p:bootloader=optiboot" ]]; then
-      printf "\n\e[33;1mBuilding multi-avr-txflash-aetr-A7105-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_enable CHECK_FOR_BOOTLOADER;
-      opt_disable $ALL_PROTOCOLS;
-      opt_enable $A7105_PROTOCOLS;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-avr-txflash-aetr-A7105-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-avr-txflash-aetr-CC2500-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_disable $ALL_PROTOCOLS;
-      opt_enable $CC2500_PROTOCOLS;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-avr-txflash-aetr-CC2500-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-avr-txflash-aetr-CYRF6936-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_disable $ALL_PROTOCOLS;
-      opt_enable $CYRF6936_PROTOCOLS;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-avr-txflash-aetr-CYRF6936-inv-$TRAVIS_TAG.bin;
-    fi
-  # Build the release files for STM32 without debug
-  - if [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=none" ]]; then
-      printf "\n\e[33;1mBuilding multi-stm-erskytx-aetr-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_enable CHECK_FOR_BOOTLOADER;
-      opt_enable $ALL_PROTOCOLS;
-      opt_enable MULTI_STATUS;
-      opt_disable MULTI_TELEMETRY;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-aetr-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-erskytx-taer-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace AETR TAER;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-taer-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-erskytx-reta-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace TAER RETA;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-reta-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-erskytx-aetr-noinv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace RETA AETR;
-      opt_disable INVERT_TELEMETRY;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-aetr-noinv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-erskytx-taer-noinv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace AETR TAER;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-taer-noinv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-erskytx-reta-noinv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace TAER RETA;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-reta-noinv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-opentx-aetr-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace RETA AETR;
-      opt_disable MULTI_STATUS;
-      opt_enable MULTI_TELEMETRY;
-      opt_enable INVERT_TELEMETRY;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-aetr-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-opentx-taer-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace AETR TAER;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-taer-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-opentx-reta-inv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace TAER RETA;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-reta-inv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-opentx-aetr-noinv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace RETA AETR;
-      opt_disable INVERT_TELEMETRY;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-aetr-noinv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-opentx-taer-noinv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace AETR TAER;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-taer-noinv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-opentx-reta-noinv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace TAER RETA;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-reta-noinv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-ppm-aetr-noinv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace RETA AETR;
-      opt_disable MULTI_STATUS;
-      opt_disable MULTI_TELEMETRY;
-      opt_set NBR_BANKS 5;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-ppm-aetr-noinv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-ppm-taer-noinv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace AETR TAER;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-ppm-taer-noinv-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-ppm-reta-noinv-$TRAVIS_TAG.bin\e[0m";
-      opt_replace TAER RETA;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-ppm-reta-noinv-$TRAVIS_TAG.bin;
-    fi
-  # Build the release files for STM32 with Native USB debugging
-  - if [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=native" ]]; then
-      printf "\n\e[33;1mBuilding multi-stm-erskytx-aetr-inv-usbdebug-$TRAVIS_TAG.bin\e[0m";
-      opt_enable CHECK_FOR_BOOTLOADER;
-      opt_enable $ALL_PROTOCOLS;
-      opt_enable MULTI_STATUS;
-      opt_disable MULTI_TELEMETRY;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-aetr-inv-usbdebug-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-opentx-aetr-inv-usbdebug-$TRAVIS_TAG.bin\e[0m";
-      opt_disable MULTI_STATUS;
-      opt_enable MULTI_TELEMETRY;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-aetr-inv-usbdebug-$TRAVIS_TAG.bin;
-    fi
-  # Build the release files for STM32 with FTDI USB debugging
-  - if [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=ftdi" ]]; then
-      printf "\n\e[33;1mBuilding multi-stm-erskytx-aetr-inv-ftdidebug-$TRAVIS_TAG.bin\e[0m";
-      opt_enable CHECK_FOR_BOOTLOADER;
-      opt_enable $ALL_PROTOCOLS;
-      opt_enable MULTI_STATUS;
-      opt_disable MULTI_TELEMETRY;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-aetr-inv-ftdidebug-$TRAVIS_TAG.bin;
-      printf "\n\e[33;1mBuilding multi-stm-opentx-aetr-inv-ftdidebug-$TRAVIS_TAG.bin\e[0m";
-      opt_disable MULTI_STATUS;
-      opt_enable MULTI_TELEMETRY;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-aetr-inv-ftdidebug-$TRAVIS_TAG.bin;
-    fi
+
+  # Build each protocol individually
+  - buildEachProtocol
+
+  # Restore the default configuration
+  - cp ./_Config.h.bak Multiprotocol/_Config.h
+
+  # Builds the files for a release - always built, but only copied to Github if the test is tagged as a release
+  - buildReleaseFiles
+
 deploy:
   provider: releases
   api_key:

Multiprotocol/A7105_SPI.ino

@@ -197,6 +197,11 @@ void A7105_AdjustLOBaseFreq(uint8_t cmd)
 					offset=(int16_t)FORCE_FLYZONE_TUNING;
 				#endif
 				break;
+			case PROTO_PELIKAN:
+				#ifdef FORCE_PELIKAN_TUNING
+					offset=(int16_t)FORCE_PELIKAN_TUNING;
+				#endif
+				break;
 			case PROTO_AFHDS2A:
 			case PROTO_AFHDS2A_RX:
 				#ifdef FORCE_AFHDS2A_TUNING
@@ -293,6 +298,14 @@ const uint8_t PROGMEM HUBSAN_A7105_regs[] = {
 	0xFF, 0xFF // 30 - 31
 };
 #endif
+#ifdef PELIKAN_A7105_INO
+const uint8_t PROGMEM PELIKAN_A7105_regs[] = {
+	0xff, 0x42, 0x00, 0x0F, 0x00, 0xff, 0xff ,0x00, 0x00, 0x00, 0x00, 0x01, 0x21, 0x05, 0x01, 0x50,	// 00 - 0f
+	0x9e, 0x4b, 0x00, 0x02, 0x16, 0x2b, 0x12, 0x00, 0x62, 0x80, 0x80, 0x00, 0x0a, 0x32, 0xc3, 0x07,	// 10 - 1f
+	0x16, 0x00, 0x00, 0xff, 0x00, 0x00, 0x3b, 0x00, 0x1f, 0x47, 0x80, 0x03, 0x01, 0x45, 0x18, 0x00,	// 20 - 2f
+	0x01, 0x0f // 30 - 31
+};
+#endif
 
 #define ID_NORMAL 0x55201041
 #define ID_PLUS   0xAA201041
@@ -309,6 +322,14 @@ void A7105_Init(void)
 		}
 		else
 	#endif
+	#ifdef PELIKAN_A7105_INO
+		if(protocol==PROTO_PELIKAN)
+		{
+			A7105_Regs=(uint8_t*)PELIKAN_A7105_regs;
+			A7105_WriteID(0x06230623);
+		}
+		else
+	#endif
 	#ifdef BUGS_A7105_INO
 		if(protocol==PROTO_BUGS)
 			A7105_Regs=(uint8_t*)BUGS_A7105_regs;
@@ -391,17 +412,21 @@ void A7105_Init(void)
 				case PROTO_FLYZONE:
 					vco_calibration1=0x02;
 					break;
+				case PROTO_PELIKAN:
+					vco_calibration1=0x0C;
+					break;
 				default:
 					vco_calibration1=0x0A;
 					break;
 			}
 			A7105_WriteReg(A7105_25_VCO_SBCAL_I,vco_calibration1);	//Reset VCO Band calibration
 		}
-
 	A7105_SetTxRxMode(TX_EN);
 	A7105_SetPower();
 
-	A7105_AdjustLOBaseFreq(0);
+	#ifdef USE_A7105_CH15_TUNING
+		A7105_AdjustLOBaseFreq(0);
+	#endif
 	
 	A7105_Strobe(A7105_STANDBY);
 }

Multiprotocol/AFHDS2A_Rx_a7105.ino

@@ -21,9 +21,6 @@
 #define AFHDS2A_RX_RXPACKET_SIZE	37
 #define AFHDS2A_RX_NUMFREQ			16
 
-static uint8_t afhds2a_rx_data_started;
-static uint8_t afhds2a_rx_disable_lna;
-
 enum {
 	AFHDS2A_RX_BIND1,
 	AFHDS2A_RX_BIND2,
@@ -36,23 +33,22 @@ static void __attribute__((unused)) AFHDS2A_Rx_build_telemetry_packet()
 	uint8_t bitsavailable = 0;
 	uint8_t idx = 0;
 
-	pkt[idx++] = RX_LQI; // 0 - 130
-	pkt[idx++] = RX_RSSI;
-	pkt[idx++] = 0; // start channel
-	pkt[idx++] = 14; // number of channels in packet
+	packet_in[idx++] = RX_LQI; // 0 - 130
+	packet_in[idx++] = RX_RSSI;
+	packet_in[idx++] = 0; // start channel
+	packet_in[idx++] = 14; // number of channels in packet
 	// pack channels
 	for (uint8_t i = 0; i < 14; i++) {
-		uint16_t val = packet[9+i*2] | (packet[10+i*2] << 8);
+		uint32_t val = packet[9+i*2] | (packet[10+i*2] << 8);
 		if (val < 860)
 			val = 860;
-		else if (val > 2140)
-			val = 2140;
-		val -= 860;
+		// convert ppm (860-2140) to Multi (0-2047)
+		val = min(((val-860)<<3)/5, 2047);
 
 		bits |= val << bitsavailable;
 		bitsavailable += 11;
 		while (bitsavailable >= 8) {
-			pkt[idx++] = bits & 0xff;
+			packet_in[idx++] = bits & 0xff;
 			bits >>= 8;
 			bitsavailable -= 8;
 		}
@@ -71,9 +67,9 @@ uint16_t initAFHDS2A_Rx()
 	A7105_Init();
 	hopping_frequency_no = 0;
 	packet_count = 0;
-	afhds2a_rx_data_started = 0;
-	afhds2a_rx_disable_lna = IS_POWER_FLAG_on;
-	CC2500_SetTxRxMode(afhds2a_rx_disable_lna ? TXRX_OFF : RX_EN);
+	rx_data_started = false;
+	rx_disable_lna = IS_POWER_FLAG_on;
+	A7105_SetTxRxMode(rx_disable_lna ? TXRX_OFF : RX_EN);
 	A7105_Strobe(A7105_RX);
 
 	if (IS_BIND_IN_PROGRESS) {
@@ -103,9 +99,9 @@ uint16_t AFHDS2A_Rx_callback()
 #ifndef FORCE_AFHDS2A_TUNING
 	A7105_AdjustLOBaseFreq(1);
 #endif
-	if (afhds2a_rx_disable_lna != IS_POWER_FLAG_on) {
-		afhds2a_rx_disable_lna = IS_POWER_FLAG_on;
-		CC2500_SetTxRxMode(afhds2a_rx_disable_lna ? TXRX_OFF : RX_EN);
+	if (rx_disable_lna != IS_POWER_FLAG_on) {
+		rx_disable_lna = IS_POWER_FLAG_on;
+		A7105_SetTxRxMode(rx_disable_lna ? TXRX_OFF : RX_EN);
 	}
 
 	switch(phase) {
@@ -156,7 +152,7 @@ uint16_t AFHDS2A_Rx_callback()
 	case AFHDS2A_RX_BIND2 | AFHDS2A_RX_WAIT_WRITE:
 		//Wait for TX completion
 		pps_timer = micros();
-		while (micros() - pps_timer < 700) // Wait max 700<EFBFBD>s, using serial+telemetry exit in about 120<EFBFBD>s
+		while (micros() - pps_timer < 700) // Wait max 700µs, using serial+telemetry exit in about 120µs
 			if (!(A7105_ReadReg(A7105_00_MODE) & 0x01))
 				break;
 		A7105_Strobe(A7105_RX);
@@ -169,11 +165,11 @@ uint16_t AFHDS2A_Rx_callback()
 			if (memcmp(&packet[1], rx_id, 4) == 0 && memcmp(&packet[5], rx_tx_addr, 4) == 0) {
 				if (packet[0] == 0x58 && packet[37] == 0x00 && telemetry_link == 0) { // standard packet, send channels to TX
 					int rssi = min(A7105_ReadReg(A7105_1D_RSSI_THOLD),160);
-					RX_RSSI = map(rssi, 160, 8, 0, 100);
+					RX_RSSI = map16b(rssi, 160, 8, 0, 128);
 					AFHDS2A_Rx_build_telemetry_packet();
 					telemetry_link = 1;
 				}
-				afhds2a_rx_data_started = 1;
+				rx_data_started = true;
 				read_retry = 10; // hop to next channel
 				pps_counter++;
 			}
@@ -194,7 +190,7 @@ uint16_t AFHDS2A_Rx_callback()
 				hopping_frequency_no = 0;
 			A7105_WriteReg(A7105_0F_PLL_I, hopping_frequency[hopping_frequency_no]);
 			A7105_Strobe(A7105_RX);
-			if (afhds2a_rx_data_started)
+			if (rx_data_started)
 				read_retry = 0;
 			else
 				read_retry = -127; // retry longer until first packet is catched

Multiprotocol/AFHDS2A_a7105.ino

@@ -90,14 +90,14 @@ static void AFHDS2A_update_telemetry()
 	#ifdef AFHDS2A_FW_TELEMETRY
 		if (option & 0x80)
 		{// forward 0xAA and 0xAC telemetry to TX, skip rx and tx id to save space
-			pkt[0]= TX_RSSI;
+			packet_in[0]= TX_RSSI;
 			debug("T(%02X)=",packet[0]);
 			for(uint8_t i=9;i < AFHDS2A_RXPACKET_SIZE; i++)
 			{
-				pkt[i-8]=packet[i];
+				packet_in[i-8]=packet[i];
 				debug(" %02X",packet[i]);
 			}
-			pkt[29]=packet[0];	// 0xAA Normal telemetry, 0xAC Extended telemetry
+			packet_in[29]=packet[0];	// 0xAA Normal telemetry, 0xAC Extended telemetry
 			telemetry_link=2;
 			debugln("");
 			return;
@@ -122,7 +122,8 @@ static void AFHDS2A_update_telemetry()
 						telemetry_link=1;
 						break;
 					case AFHDS2A_SENSOR_RX_ERR_RATE:
-						RX_LQI=packet[index+2];
+						if(packet[index+2]<=100)
+							RX_LQI=packet[index+2];
 						break;
 					case AFHDS2A_SENSOR_RX_RSSI:
 						RX_RSSI = -packet[index+2];
@@ -264,11 +265,15 @@ uint16_t ReadAFHDS2A()
 				A7105_ReadData(AFHDS2A_RXPACKET_SIZE);
 				if(packet[0] == 0xbc && packet[9] == 0x01)
 				{
-					uint8_t temp=AFHDS2A_EEPROM_OFFSET+RX_num*4;
+					uint8_t addr;
+					if(RX_num<16)
+						addr=AFHDS2A_EEPROM_OFFSET+RX_num*4;
+					else
+						addr=AFHDS2A_EEPROM_OFFSET2+(RX_num-16)*4;
 					for(uint8_t i=0; i<4; i++)
 					{
 						rx_id[i] = packet[5+i];
-						eeprom_write_byte((EE_ADDR)(temp+i),rx_id[i]);
+						eeprom_write_byte((EE_ADDR)(addr+i),rx_id[i]);
 					}
 					phase = AFHDS2A_BIND4;
 					packet_count++;
@@ -316,6 +321,9 @@ uint16_t ReadAFHDS2A()
 			packet_type = AFHDS2A_PACKET_STICKS;
 			phase = AFHDS2A_DATA;
 		case AFHDS2A_DATA:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(3850);
+			#endif
 			AFHDS2A_build_packet(packet_type);
 			if((A7105_ReadReg(A7105_00_MODE) & 0x01))		// Check if something has been received...
 				data_rx=0;
@@ -330,7 +338,10 @@ uint16_t ReadAFHDS2A()
 			{
 				#ifdef FAILSAFE_ENABLE
 					if(!(packet_counter % 1569) && IS_FAILSAFE_VALUES_on)
+					{
 						packet_type = AFHDS2A_PACKET_FAILSAFE;
+						FAILSAFE_VALUES_off;
+					}
 					else
 				#endif
 						packet_type = AFHDS2A_PACKET_STICKS;		// todo : check for settings changes
@@ -344,13 +355,19 @@ uint16_t ReadAFHDS2A()
 					if(packet[0] == 0xAA || packet[0] == 0xAC)
 					{
 						if(!memcmp(&packet[1], rx_tx_addr, 4))
-						{ // Validate TX address
+						{ // TX address validated
 							#ifdef AFHDS2A_LQI_CH
-								for(uint8_t sensor=0; sensor<7; sensor++)
-								{//read LQI value for RX output
-									uint8_t index = 9+(4*sensor);
-									if(packet[index]==AFHDS2A_SENSOR_RX_ERR_RATE)
-										RX_LQI=packet[index+2];
+								if(packet[0]==0xAA && packet[9]!=0xFD)
+								{// Normal telemetry packet
+									for(uint8_t sensor=0; sensor<7; sensor++)
+									{//read LQI value for RX output
+										uint8_t index = 9+(4*sensor);
+										if(packet[index]==AFHDS2A_SENSOR_RX_ERR_RATE && packet[index+2]<=100)
+										{
+											RX_LQI=packet[index+2];
+											break;
+										}
+									}
 								}
 							#endif
 							#if defined(AFHDS2A_FW_TELEMETRY) || defined(AFHDS2A_HUB_TELEMETRY)
@@ -390,14 +407,15 @@ uint16_t initAFHDS2A()
 	{
 		phase = AFHDS2A_DATA_INIT;
 		//Read RX ID from EEPROM based on RX_num, RX_num must be uniq for each RX
-		uint8_t temp=AFHDS2A_EEPROM_OFFSET+RX_num*4;
+		uint8_t addr;
+		if(RX_num<16)
+			addr=AFHDS2A_EEPROM_OFFSET+RX_num*4;
+		else
+			addr=AFHDS2A_EEPROM_OFFSET2+(RX_num-16)*4;
 		for(uint8_t i=0;i<4;i++)
-			rx_id[i]=eeprom_read_byte((EE_ADDR)(temp+i));
+			rx_id[i]=eeprom_read_byte((EE_ADDR)(addr+i));
 	}
 	hopping_frequency_no = 0;
-#if defined(AFHDS2A_FW_TELEMETRY) || defined(AFHDS2A_HUB_TELEMETRY)
-	init_frskyd_link_telemetry();
-#endif
 	return 50000;
 }
 #endif

Multiprotocol/ASSAN_nrf24l01.ino

@@ -127,6 +127,9 @@ uint16_t ASSAN_callback()
 			phase=ASSAN_DATA2;
 			return 2000;
 		case ASSAN_DATA2:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(12000);
+			#endif
 		case ASSAN_DATA3:
 			ASSAN_send_packet();
 			phase++;	// DATA 3 or 4

Multiprotocol/BUGSMINI_nrf24l01.ino

@@ -181,7 +181,7 @@ static void __attribute__((unused)) BUGSMINI_make_address()
     uint8_t start, length, index;
 
 	//read rxid
-	uint8_t base_adr=BUGSMINI_EEPROM_OFFSET+RX_num*2;
+	uint8_t base_adr=BUGSMINI_EEPROM_OFFSET+(RX_num&0x0F)*2;
     uint8_t rxid_high = eeprom_read_byte((EE_ADDR)(base_adr+0));
     uint8_t rxid_low  = eeprom_read_byte((EE_ADDR)(base_adr+1));
     
@@ -272,7 +272,7 @@ uint16_t BUGSMINI_callback()
 			if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))
 			{ // RX fifo data ready
 				XN297_ReadPayload(packet, BUGSMINI_RX_PAYLOAD_SIZE);
-				base_adr=BUGSMINI_EEPROM_OFFSET+RX_num*2;
+				base_adr=BUGSMINI_EEPROM_OFFSET+(RX_num&0x0F)*2;
 				eeprom_write_byte((EE_ADDR)(base_adr+0),packet[1]);	// Save rxid in EEPROM
 				eeprom_write_byte((EE_ADDR)(base_adr+1),packet[2]);	// Save rxid in EEPROM
 				NRF24L01_SetTxRxMode(TXRX_OFF);
@@ -299,6 +299,9 @@ uint16_t BUGSMINI_callback()
 			phase = BUGSMINI_BIND1;
 			return BUGSMINI_PACKET_INTERVAL - BUGSMINI_WRITE_WAIT;
 		case BUGSMINI_DATA1:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(BUGSMINI_PACKET_INTERVAL);
+			#endif
 			if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))
 			{ // RX fifo data ready => read only 12 bytes to not overwrite channel change flag
 				XN297_ReadPayload(packet, 12);
@@ -375,9 +378,6 @@ uint16_t initBUGSMINI()
 	armed = 0;
 	arm_flags = BUGSMINI_FLAG_DISARM;    // initial value from captures
 	arm_channel_previous = BUGSMINI_CH_SW_ARM;
-	#ifdef BUGS_HUB_TELEMETRY
-		init_frskyd_link_telemetry();
-	#endif
 	return BUGSMINI_INITIAL_WAIT;
 }
 

Multiprotocol/Bayang_Rx_nrf24l01.ino

@@ -0,0 +1,207 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if defined(BAYANG_RX_NRF24L01_INO)
+
+#include "iface_nrf24l01.h"
+
+#define BAYANG_RX_PACKET_SIZE		15
+#define BAYANG_RX_RF_NUM_CHANNELS	4
+#define BAYANG_RX_RF_BIND_CHANNEL	0
+#define BAYANG_RX_ADDRESS_LENGTH	5
+
+enum {
+	BAYANG_RX_BIND = 0,
+	BAYANG_RX_DATA
+};
+
+static void __attribute__((unused)) Bayang_Rx_init_nrf24l01()
+{
+	const uint8_t bind_address[BAYANG_RX_ADDRESS_LENGTH] = { 0,0,0,0,0 };
+	NRF24L01_Initialize();
+	XN297_SetTXAddr(bind_address, BAYANG_RX_ADDRESS_LENGTH);
+	XN297_SetRXAddr(bind_address, BAYANG_RX_ADDRESS_LENGTH);
+	NRF24L01_FlushRx();
+	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);     	// Clear data ready, data sent, and retransmit
+	NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);      	// No Auto Acknowldgement on all data pipes
+	NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);  	// Enable data pipe 0 only
+	NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, BAYANG_RX_PACKET_SIZE + 2); // 2 extra bytes for xn297 crc
+	NRF24L01_WriteReg(NRF24L01_05_RF_CH, BAYANG_RX_RF_BIND_CHANNEL);
+	NRF24L01_SetBitrate(NRF24L01_BR_1M);             	// 1Mbps
+	NRF24L01_SetPower();
+	NRF24L01_Activate(0x73);							// Activate feature register
+	NRF24L01_WriteReg(NRF24L01_1C_DYNPD, 0x00);			// Disable dynamic payload length on all pipes
+	NRF24L01_WriteReg(NRF24L01_1D_FEATURE, 0x01);
+	NRF24L01_Activate(0x73);
+	NRF24L01_SetTxRxMode(TXRX_OFF);
+	NRF24L01_FlushRx();
+	NRF24L01_SetTxRxMode(RX_EN);
+	XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP) | _BV(NRF24L01_00_PRIM_RX));
+}
+
+static uint8_t __attribute__((unused)) Bayang_Rx_check_validity() {
+	uint8_t sum = packet[0];
+	for (uint8_t i = 1; i < BAYANG_RX_PACKET_SIZE - 1; i++)
+		sum += packet[i];
+	return sum == packet[14];
+}
+
+static void __attribute__((unused)) Bayang_Rx_build_telemetry_packet()
+{
+	uint32_t bits = 0;
+	uint8_t bitsavailable = 0;
+	uint8_t idx = 0;
+
+	packet_in[idx++] = RX_LQI;
+	packet_in[idx++] = RX_LQI>>1;	// no RSSI: 125..0
+	packet_in[idx++] = 0;			// start channel
+	packet_in[idx++] = 10;			// number of channels in packet
+
+	// convert & pack channels
+	for (uint8_t i = 0; i < packet_in[3]; i++) {
+		uint32_t val = CHANNEL_MIN_100;
+		if (i < 4) {
+			// AETR
+			//val = (((packet[4 + i * 2] & ~0x7C) << 8) | packet[5 + i * 2]) << 1;
+			val=packet[4 + i * 2]&0x03;
+			val=(val<<8)+packet[5 + i * 2];
+			val=((val+128)<<3)/5;
+		} else if (i == 4 || i == 5) {
+			val=packet[i==4?1:13];
+			val=((val+32)<<5)/5;						// extra analog channel
+		} else if (((i == 6) && (packet[2] & 0x08)) ||	// flip
+				 ((i == 7) && (packet[2] & 0x01)) ||	// rth
+				 ((i == 8) && (packet[2] & 0x20)) ||	// picture
+				 ((i == 9) && (packet[2] & 0x10))) {	// video
+			// set channel to 100% if feature is enabled
+			val = CHANNEL_MAX_100;
+		}
+		bits |= val << bitsavailable;
+		bitsavailable += 11;
+		while (bitsavailable >= 8) {
+			packet_in[idx++] = bits & 0xff;
+			bits >>= 8;
+			bitsavailable -= 8;
+		}
+	}
+}
+
+uint16_t initBayang_Rx()
+{
+	uint8_t i;
+	Bayang_Rx_init_nrf24l01();
+	hopping_frequency_no = 0;
+	rx_data_started = false;
+	rx_data_received = false;
+	
+	if (IS_BIND_IN_PROGRESS) {
+		phase = BAYANG_RX_BIND;
+	}
+	else {
+		uint16_t temp = BAYANG_RX_EEPROM_OFFSET;
+		for (i = 0; i < 5; i++)
+			rx_tx_addr[i] = eeprom_read_byte((EE_ADDR)temp++);
+		for (i = 0; i < BAYANG_RX_RF_NUM_CHANNELS; i++)
+			hopping_frequency[i] = eeprom_read_byte((EE_ADDR)temp++);
+		XN297_SetTXAddr(rx_tx_addr, BAYANG_RX_ADDRESS_LENGTH);
+		XN297_SetRXAddr(rx_tx_addr, BAYANG_RX_ADDRESS_LENGTH);
+		phase = BAYANG_RX_DATA;
+	}
+	return 1000;
+}
+
+uint16_t Bayang_Rx_callback()
+{
+	uint8_t i;
+	static int8_t read_retry;
+	static uint16_t pps_counter;
+	static uint32_t pps_timer = 0;
+
+	switch (phase) {
+	case BAYANG_RX_BIND:
+		if (NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR)) {
+			// data received from TX
+			if (XN297_ReadPayload(packet, BAYANG_RX_PACKET_SIZE) && ( packet[0] == 0xA4 || packet[0] == 0xA2 ) && Bayang_Rx_check_validity()) {
+				// store tx info into eeprom
+				uint16_t temp = BAYANG_RX_EEPROM_OFFSET;
+				for (i = 0; i < 5; i++) {
+					rx_tx_addr[i] = packet[i + 1];
+					eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[i]);
+				}
+				for (i = 0; i < 4; i++) {
+					hopping_frequency[i] = packet[i + 6];
+					eeprom_write_byte((EE_ADDR)temp++, hopping_frequency[i]);
+				}
+				XN297_SetTXAddr(rx_tx_addr, BAYANG_RX_ADDRESS_LENGTH);
+				XN297_SetRXAddr(rx_tx_addr, BAYANG_RX_ADDRESS_LENGTH);
+				BIND_DONE;
+				phase = BAYANG_RX_DATA;
+			}
+			NRF24L01_FlushRx();
+			NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
+		}
+		break;
+	case BAYANG_RX_DATA:
+		if (NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR)) {
+			if (XN297_ReadPayload(packet, BAYANG_RX_PACKET_SIZE) && packet[0] == 0xA5 && Bayang_Rx_check_validity()) {
+				if (telemetry_link == 0) {
+					Bayang_Rx_build_telemetry_packet();
+					telemetry_link = 1;
+				}
+				rx_data_started = true;
+				rx_data_received = true;
+				read_retry = 8;
+				pps_counter++;
+			}
+		}
+		// packets per second
+		if (millis() - pps_timer >= 1000) {
+			pps_timer = millis();
+			debugln("%d pps", pps_counter);
+			RX_LQI = pps_counter >> 1;
+			pps_counter = 0;
+		}
+		// frequency hopping
+		if (read_retry++ >= 8) {
+			hopping_frequency_no++;
+			if (hopping_frequency_no >= BAYANG_RX_RF_NUM_CHANNELS)
+				hopping_frequency_no = 0;
+			NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency[hopping_frequency_no]);
+			NRF24L01_FlushRx();
+			NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
+			if (rx_data_started)
+			{
+				if(rx_data_received)
+				{ // In sync
+					rx_data_received = false;
+					read_retry = 5;
+					return 1500;
+				}
+				else
+				{ // packet lost
+					read_retry = 0;
+					if(RX_LQI==0)	// communication lost
+						rx_data_started=false;
+				}
+			}
+			else
+				read_retry = -16; // retry longer until first packet is caught
+		}
+		return 250;
+	}
+	return 1000;
+}
+
+#endif

Multiprotocol/Bayang_nrf24l01.ino

@@ -20,7 +20,8 @@ Multiprotocol is distributed in the hope that it will be useful,
 #include "iface_nrf24l01.h"
 
 #define BAYANG_BIND_COUNT		1000
-#define BAYANG_PACKET_PERIOD	1000
+#define BAYANG_PACKET_PERIOD	2000
+#define BAYANG_PACKET_TELEM_PERIOD	5000
 #define BAYANG_INITIAL_WAIT		500
 #define BAYANG_PACKET_SIZE		15
 #define BAYANG_RF_NUM_CHANNELS	4
@@ -46,10 +47,10 @@ enum BAYANG_OPTION_FLAGS {
 	BAYANG_OPTION_FLAG_ANALOGAUX	= 0x02,
 };
 
-static void __attribute__((unused)) BAYANG_send_packet(uint8_t bind)
+static void __attribute__((unused)) BAYANG_send_packet()
 {
 	uint8_t i;
-	if (bind)
+	if (IS_BIND_IN_PROGRESS)
 	{
 	#ifdef BAYANG_HUB_TELEMETRY
 		if(option & BAYANG_OPTION_FLAG_TELEMETRY)
@@ -186,29 +187,15 @@ static void __attribute__((unused)) BAYANG_send_packet(uint8_t bind)
 	for (uint8_t i=0; i < BAYANG_PACKET_SIZE-1; i++)
 		packet[14] += packet[i];
 
-	NRF24L01_WriteReg(NRF24L01_05_RF_CH, bind ? rf_ch_num:hopping_frequency[hopping_frequency_no++]);
+	NRF24L01_WriteReg(NRF24L01_05_RF_CH, IS_BIND_IN_PROGRESS ? rf_ch_num:hopping_frequency[hopping_frequency_no++]);
 	hopping_frequency_no%=BAYANG_RF_NUM_CHANNELS;
 
-	// clear packet status bits and TX FIFO
-	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
-	NRF24L01_FlushTx();
-
-	XN297_WritePayload(packet, BAYANG_PACKET_SIZE);
-
-	NRF24L01_SetTxRxMode(TXRX_OFF);
-	NRF24L01_SetTxRxMode(TX_EN);
-
 	// Power on, TX mode, 2byte CRC
 	// Why CRC0? xn297 does not interpret it - either 16-bit CRC or nothing
+	NRF24L01_FlushTx();
+	NRF24L01_SetTxRxMode(TX_EN);
 	XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP));
-
-	#ifdef BAYANG_HUB_TELEMETRY
-	if (option & BAYANG_OPTION_FLAG_TELEMETRY)
-	{	// switch radio to rx as soon as packet is sent
-		while (!(NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_TX_DS)));
-		NRF24L01_WriteReg(NRF24L01_00_CONFIG, 0x03);
-    }
-	#endif
+	XN297_WritePayload(packet, BAYANG_PACKET_SIZE);
 
 	NRF24L01_SetPower();	// Set tx_power
 }
@@ -233,7 +220,8 @@ static void __attribute__((unused)) BAYANG_check_rx(void)
 			// compensated battery volts*100/2
 			v_lipo2 = (packet[5]<<7) + (packet[6]>>2);
 			// reception in packets / sec
-			RX_RSSI = packet[7];
+			RX_LQI = packet[7];
+			RX_RSSI = RX_LQI;
 			//Flags
 			//uint8_t flags = packet[3] >> 3;
 			// battery low: flags & 1
@@ -242,6 +230,7 @@ static void __attribute__((unused)) BAYANG_check_rx(void)
 				telemetry_link=1;
 		}
 	}
+	NRF24L01_SetTxRxMode(TXRX_OFF);
 }
 #endif
 
@@ -278,53 +267,73 @@ static void __attribute__((unused)) BAYANG_init()
 	}
 }
 
+enum {
+	BAYANG_BIND=0,
+	BAYANG_WRITE,
+	BAYANG_CHECK,
+	BAYANG_READ,
+};
+
+#define BAYANG_CHECK_DELAY		1000		// Time after write phase to check write complete
+#define BAYANG_READ_DELAY		600			// Time before read phase
+
 uint16_t BAYANG_callback()
 {
-	if(IS_BIND_DONE)
+	#ifdef BAYANG_HUB_TELEMETRY
+		uint16_t start;
+	#endif
+	switch(phase)
 	{
-		if(packet_count==0)
-			BAYANG_send_packet(0);
-		packet_count++;
-		#ifdef BAYANG_HUB_TELEMETRY
-			if (option & BAYANG_OPTION_FLAG_TELEMETRY)
-			{	// telemetry is enabled 
-				state++;
-				if (state > 1000)
-				{
-					//calculate telemetry reception packet rate - packets per 1000ms
-					TX_RSSI = telemetry_counter;
-					telemetry_counter = 0;
-					state = 0;
-					telemetry_lost=0;
-				}
-
-				if (packet_count > 1)
-					BAYANG_check_rx();
-
-				packet_count %= 5;
+		case BAYANG_BIND:
+			if (--bind_counter == 0)
+			{
+				XN297_SetTXAddr(rx_tx_addr, BAYANG_ADDRESS_LENGTH);
+				#ifdef BAYANG_HUB_TELEMETRY
+					XN297_SetRXAddr(rx_tx_addr, BAYANG_ADDRESS_LENGTH);
+				#endif
+				BIND_DONE;
+				phase++;	//WRITE
 			}
 			else
-		#endif
-				packet_count%=2;
-	}
-	else
-	{
-		if (bind_counter == 0)
-		{
-			XN297_SetTXAddr(rx_tx_addr, BAYANG_ADDRESS_LENGTH);
-			#ifdef BAYANG_HUB_TELEMETRY
-				XN297_SetRXAddr(rx_tx_addr, BAYANG_ADDRESS_LENGTH);
+				BAYANG_send_packet();
+			break;
+		case BAYANG_WRITE:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync((option & BAYANG_OPTION_FLAG_TELEMETRY)?BAYANG_PACKET_TELEM_PERIOD:BAYANG_PACKET_PERIOD);
 			#endif
-			BIND_DONE;
-		}
-		else
-		{
-			if(packet_count==0)
-				BAYANG_send_packet(1);
-			packet_count++;
-			packet_count%=4;
-			bind_counter--;
-		}
+			BAYANG_send_packet();
+			#ifdef BAYANG_HUB_TELEMETRY
+				if (option & BAYANG_OPTION_FLAG_TELEMETRY)
+				{	// telemetry is enabled
+					state++;
+					if (state > 200)
+					{
+						state = 0;
+						//telemetry reception packet rate - packets per second
+						TX_LQI = telemetry_counter>>1;
+						telemetry_counter = 0;
+						telemetry_lost=0;
+					}
+					phase++;	//CHECK
+					return BAYANG_CHECK_DELAY;
+				}
+			#endif
+			break;
+	#ifdef BAYANG_HUB_TELEMETRY
+		case BAYANG_CHECK:
+			// switch radio to rx as soon as packet is sent
+			start=(uint16_t)micros();
+			while ((uint16_t)((uint16_t)micros()-(uint16_t)start) < 1000)			// Wait max 1ms
+				if((NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_TX_DS)))
+					break;
+			NRF24L01_WriteReg(NRF24L01_00_CONFIG, 0x03);
+			phase++;	// READ
+			return BAYANG_PACKET_TELEM_PERIOD - BAYANG_CHECK_DELAY - BAYANG_READ_DELAY;
+		case BAYANG_READ:
+			BAYANG_check_rx();
+			phase=BAYANG_WRITE;
+			return BAYANG_READ_DELAY;
+	#endif
 	}
 	return BAYANG_PACKET_PERIOD;
 }
@@ -345,14 +354,11 @@ static void __attribute__((unused)) BAYANG_initialize_txid()
 uint16_t initBAYANG(void)
 {
 	BIND_IN_PROGRESS;	// autobind protocol
+	phase=BAYANG_BIND;
     bind_counter = BAYANG_BIND_COUNT;
 	BAYANG_initialize_txid();
 	BAYANG_init();
 	packet_count=0;
-	#ifdef BAYANG_HUB_TELEMETRY
-		init_frskyd_link_telemetry();
-		telemetry_lost=1;	// do not send telemetry to TX right away until we have a TX_RSSI value to prevent warning message...
-	#endif
 	return BAYANG_INITIAL_WAIT+BAYANG_PACKET_PERIOD;
 }
 

Multiprotocol/Bugs_a7105.ino

@@ -284,7 +284,7 @@ static void  __attribute__((unused))BUGS_set_radio_data()
 	{
 		offset=BUGS_NUM_RFCHAN;
 		// Read radio_id from EEPROM
-		uint8_t base_adr=BUGS_EEPROM_OFFSET+RX_num*2;
+		uint8_t base_adr=BUGS_EEPROM_OFFSET+(RX_num&0x0F)*2;
 		uint16_t rxid=0;
 		for(uint8_t i=0; i<2; i++)
 			rxid|=eeprom_read_byte((EE_ADDR)(base_adr+i))<<(i*8);
@@ -374,7 +374,7 @@ uint16_t ReadBUGS(void)
 			BIND_DONE;
 			// set radio_id
 			rxid = (packet[1] << 8) + packet[2];
-			base_adr=BUGS_EEPROM_OFFSET+RX_num*2;
+			base_adr=BUGS_EEPROM_OFFSET+(RX_num&0x0F)*2;
 			for(uint8_t i=0; i<2; i++)
 				eeprom_write_byte((EE_ADDR)(base_adr+i),rxid>>(i*8));	// Save rxid in EEPROM
 			BUGS_set_radio_data();
@@ -385,6 +385,9 @@ uint16_t ReadBUGS(void)
 			break;
 
 		case BUGS_DATA_1:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(BUGS_PACKET_PERIOD);
+			#endif
 			A7105_SetPower();
 			BUGS_build_packet(0);
 			A7105_WriteReg(A7105_03_FIFOI, BUGS_FIFO_SIZE_TX);
@@ -437,7 +440,7 @@ uint16_t ReadBUGS(void)
 uint16_t initBUGS(void)
 {
 	uint16_t rxid=0;
-	uint8_t base_adr=BUGS_EEPROM_OFFSET+RX_num*2;
+	uint8_t base_adr=BUGS_EEPROM_OFFSET+(RX_num&0x0F)*2;
 	for(uint8_t i=0; i<2; i++)
 		rxid|=eeprom_read_byte((EE_ADDR)(base_adr+i))<<(i*8);
 	if(rxid==0xffff)
@@ -456,9 +459,6 @@ uint16_t initBUGS(void)
 	armed = 0;
 	arm_flags = BUGS_FLAG_DISARM;		// initial value from captures
 	arm_channel_previous = BUGS_CH_SW_ARM;
-	#ifdef BUGS_HUB_TELEMETRY
-		init_frskyd_link_telemetry();
-	#endif
 
 	return 10000;
 }

Multiprotocol/CABELL_nrf224l01.ino

@@ -406,9 +406,12 @@ uint16_t CABELL_callback()
 	if (IS_BIND_DONE)
 	{
 		CABELL_send_packet(0);  // packet_period is set/adjusted in CABELL_send_packet
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(packet_period);
+		#endif
 		return packet_period;
 	}
-	if (bind_counter == 0)
+	else if (bind_counter == 0)
 	{
 		BIND_DONE;
 		CABELL_init();   // non-bind address 
@@ -429,10 +432,6 @@ uint16_t initCABELL(void)
 	else  
 		bind_counter = CABELL_BIND_COUNT;
 	CABELL_init();
-	#if defined CABELL_HUB_TELEMETRY 
-		init_frskyd_link_telemetry();
-		telemetry_lost=1;				// do not send telemetry to TX right away until we have a TX_RSSI value to prevent warning message...
-	#endif
 
 	packet_period = CABELL_PACKET_PERIOD;
 

Multiprotocol/CFlie_nrf24l01.ino

@@ -97,7 +97,7 @@ static inline uint8_t crtp_create_header(uint8_t port, uint8_t channel)
 #define TX_ADDR_SIZE 5
 
 // Timeout for callback in uSec, 10ms=10000us for Crazyflie
-#define PACKET_PERIOD 10000
+#define CFLIE_PACKET_PERIOD 10000
 
 #define MAX_PACKET_SIZE 32  // CRTP is 32 bytes
 
@@ -781,7 +781,10 @@ static uint16_t cflie_callback()
         break;
 
     case CFLIE_DATA:
-        // if (Model.proto_opts[PROTOOPTS_TELEMETRY] == TELEM_ON_CRTPLOG) {
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(CFLIE_PACKET_PERIOD);
+		#endif
+		// if (Model.proto_opts[PROTOOPTS_TELEMETRY] == TELEM_ON_CRTPLOG) {
         //     update_telemetry_crtplog();
         // } else if (Model.proto_opts[PROTOOPTS_TELEMETRY] == TELEM_ON_ACKPKT) {
         //     update_telemetry_ackpkt();
@@ -792,7 +795,7 @@ static uint16_t cflie_callback()
         send_cmd_packet();
         break;
     }
-    return PACKET_PERIOD;                  // Packet at standard protocol interval
+    return CFLIE_PACKET_PERIOD;                  // Packet at standard protocol interval
 }
 
 // Generate address to use from TX id and manufacturer id (STM32 unique id)

Multiprotocol/CG023_nrf24l01.ino

@@ -138,7 +138,12 @@ static void __attribute__((unused)) CG023_init()
 uint16_t CG023_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(packet_period);
+		#endif
 		CG023_send_packet(0);
+	}
 	else
 	{
 		if (bind_counter == 0)

Multiprotocol/CX10_nrf24l01.ino

@@ -229,6 +229,9 @@ uint16_t CX10_callback()
 			}
 			break;
 		case CX10_DATA:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(packet_period);
+			#endif
 			CX10_Write_Packet(0);
 			break;
 	}

Multiprotocol/Convert.ino

@@ -0,0 +1,164 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/************************/
+/**  Convert routines  **/
+/************************/
+// Reverse a channel and store it
+void reverse_channel(uint8_t num)
+{
+	uint16_t val=2048-Channel_data[num];
+	if(val>=2048) val=2047;
+	Channel_data[num]=val;
+}
+
+// Channel value is converted to ppm 860<->2140 -125%<->+125% and 988<->2012 -100%<->+100%
+uint16_t convert_channel_ppm(uint8_t num)
+{
+	uint16_t val=Channel_data[num];
+	return (((val<<2)+val)>>3)+860;				//value range 860<->2140 -125%<->+125%
+}
+
+// Channel value 100% is converted to 10bit values 0<->1023
+uint16_t convert_channel_10b(uint8_t num)
+{
+	uint16_t val=Channel_data[num];
+	val=((val<<2)+val)>>3;
+	if(val<=128) return 0;
+	if(val>=1152) return 1023;
+	return val-128;
+}
+
+// Channel value 100% is converted to 8bit values 0<->255
+uint8_t convert_channel_8b(uint8_t num)
+{
+	uint16_t val=Channel_data[num];
+	val=((val<<2)+val)>>5;
+	if(val<=32) return 0;
+	if(val>=288) return 255;
+	return val-32;
+}
+
+// Channel value 100% is converted to 8b with deadband
+uint8_t convert_channel_8b_limit_deadband(uint8_t num,uint8_t min,uint8_t mid, uint8_t max, uint8_t deadband)
+{
+	uint16_t val=limit_channel_100(num);		// 204<->1844
+	uint16_t db_low=CHANNEL_MID-deadband, db_high=CHANNEL_MID+deadband; // 1024+-deadband
+	int32_t calc;
+	uint8_t out;
+	if(val>=db_low && val<=db_high)
+		return mid;
+	else if(val<db_low)
+	{
+		val-=CHANNEL_MIN_100;
+		calc=mid-min;
+		calc*=val;
+		calc/=(db_low-CHANNEL_MIN_100);
+		out=calc;
+		out+=min;
+	}
+	else
+	{
+		val-=db_high;
+		calc=max-mid;
+		calc*=val;
+		calc/=(CHANNEL_MAX_100-db_high+1);
+		out=calc;
+		out+=mid;
+		if(max>min) out++; else out--;
+	}
+	return out;
+}
+
+// Channel value 100% is converted to value scaled
+int16_t convert_channel_16b_limit(uint8_t num,int16_t min,int16_t max)
+{
+	int32_t val=limit_channel_100(num);			// 204<->1844
+	val=(val-CHANNEL_MIN_100)*(max-min)/(CHANNEL_MAX_100-CHANNEL_MIN_100)+min;
+	return (uint16_t)val;
+}
+
+// Channel value -125%<->125% is scaled to 16bit value with no limit
+int16_t convert_channel_16b_nolimit(uint8_t num, int16_t min, int16_t max)
+{
+	int32_t val=Channel_data[num];				// 0<->2047
+	val=(val-CHANNEL_MIN_100)*(max-min)/(CHANNEL_MAX_100-CHANNEL_MIN_100)+min;
+	return (uint16_t)val;
+}
+
+// Channel value is converted sign + magnitude 8bit values
+uint8_t convert_channel_s8b(uint8_t num)
+{
+	uint8_t ch;
+	ch = convert_channel_8b(num);
+	return (ch < 128 ? 127-ch : ch);	
+}
+
+// Channel value is limited to 100%
+uint16_t limit_channel_100(uint8_t num)
+{
+	if(Channel_data[num]>=CHANNEL_MAX_100)
+		return CHANNEL_MAX_100;
+	if (Channel_data[num]<=CHANNEL_MIN_100)
+		return CHANNEL_MIN_100;
+	return Channel_data[num];
+}
+
+// Channel value is converted for HK310
+void convert_channel_HK310(uint8_t num, uint8_t *low, uint8_t *high)
+{
+	uint16_t temp=0xFFFF-(3440+((Channel_data[num]*5)>>1))/3;
+	*low=(uint8_t)(temp&0xFF);
+	*high=(uint8_t)(temp>>8);
+}
+
+#ifdef FAILSAFE_ENABLE
+// Failsafe value is converted for HK310
+void convert_failsafe_HK310(uint8_t num, uint8_t *low, uint8_t *high)
+{
+	uint16_t temp=0xFFFF-(3440+((Failsafe_data[num]*5)>>1))/3;
+	*low=(uint8_t)(temp&0xFF);
+	*high=(uint8_t)(temp>>8);
+}
+#endif
+
+// Channel value for FrSky (PPM is multiplied by 1.5)
+uint16_t convert_channel_frsky(uint8_t num)
+{
+	uint16_t val=Channel_data[num];
+	return ((val*15)>>4)+1290;
+}
+
+// 0-2047, 0 = 817, 1024 = 1500, 2047 = 2182
+//64=860,1024=1500,1984=2140//Taranis 125%
+static uint16_t  __attribute__((unused)) FrSkyX_scaleForPXX( uint8_t i, uint8_t num_chan=8)
+{	//mapped 860,2140(125%) range to 64,1984(PXX values);
+	uint16_t chan_val=convert_channel_frsky(i)-1226;
+	if(i>=num_chan) chan_val|=2048;   // upper channels offset
+	return chan_val;
+}
+
+#ifdef FAILSAFE_ENABLE
+static uint16_t  __attribute__((unused)) FrSkyX_scaleForPXX_FS( uint8_t i )
+{	//mapped 1,2046(125%) range to 64,1984(PXX values);
+	uint16_t chan_val=((Failsafe_data[i]*15)>>4)+64;
+	if(Failsafe_data[i]==FAILSAFE_CHANNEL_NOPULSES)
+		chan_val=FAILSAFE_CHANNEL_NOPULSES;
+	else if(Failsafe_data[i]==FAILSAFE_CHANNEL_HOLD)
+		chan_val=FAILSAFE_CHANNEL_HOLD;
+	if(i>7) chan_val|=2048;   // upper channels offset
+	return chan_val;
+}
+#endif

Multiprotocol/Corona_cc2500.ino

@@ -258,6 +258,9 @@ static uint16_t __attribute__((unused)) CORONA_build_packet()
 
 uint16_t ReadCORONA()
 {
+	#ifdef MULTI_SYNC
+		telemetry_set_input_sync(22000);
+	#endif
 	// Tune frequency if it has been changed
 	if ( prev_option != option )
 	{

Multiprotocol/DM002_nrf24l01.ino

@@ -113,7 +113,12 @@ static void __attribute__((unused)) DM002_init()
 uint16_t DM002_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(DM002_PACKET_PERIOD);
+		#endif
 		DM002_send_packet(0);
+	}
 	else
 	{
 		if (bind_counter == 0)

Multiprotocol/DSM_cyrf6936.ino

@@ -230,7 +230,7 @@ static void __attribute__((unused)) DSM_update_channels()
 	if(sub_protocol==DSM_AUTO)
 		num_ch=12;						// Force 12 channels in mode Auto
 	else
-		num_ch=option;
+		num_ch=option & 0x7F;			// Remove the Max Throw flag
 	if(num_ch<4 || num_ch>12)
 		num_ch=6;						// Default to 6 channels if invalid choice...
 
@@ -273,8 +273,8 @@ static void __attribute__((unused)) DSM_build_data_packet(uint8_t upper)
 			/* Spektrum own remotes transmit normal values during bind and actually use this (e.g. Nano CP X) to
 			   select the transmitter mode (e.g. computer vs non-computer radio), so always send normal output */
 			#ifdef DSM_THROTTLE_KILL_CH
-				if(CH_TAER[idx]==THROTTLE && kill_ch<=604)
-				{//Activate throttle kill only if DSM_THROTTLE_KILL_CH below -50%
+				if(idx==CH1 && kill_ch<=604)
+				{//Activate throttle kill only if channel is throttle and DSM_THROTTLE_KILL_CH below -50%
 					if(kill_ch<CHANNEL_MIN_100)					// restrict val to 0...400
 						kill_ch=0;
 					else
@@ -286,7 +286,10 @@ static void __attribute__((unused)) DSM_build_data_packet(uint8_t upper)
 				#ifdef DSM_MAX_THROW
 					value=Channel_data[CH_TAER[idx]];								// -100%..+100% => 1024..1976us and -125%..+125% => 904..2096us based on Redcon 6 channel DSM2 RX
 				#else
-					value=convert_channel_16b_nolimit(CH_TAER[idx],0x150,0x6B0);	// -100%..+100% => 1100..1900us and -125%..+125% => 1000..2000us based on Redcon 6 channel DSM2 RX
+					if(option & 0x80)
+						value=Channel_data[CH_TAER[idx]];								// -100%..+100% => 1024..1976us and -125%..+125% => 904..2096us based on Redcon 6 channel DSM2 RX
+					else
+						value=convert_channel_16b_nolimit(CH_TAER[idx],0x150,0x6B0);	// -100%..+100% => 1100..1900us and -125%..+125% => 1000..2000us based on Redcon 6 channel DSM2 RX
 				#endif
 			if(bits==10) value>>=1;
 			value |= (upper && i==0 ? 0x8000 : 0) | (idx << bits);
@@ -363,12 +366,12 @@ static uint8_t __attribute__((unused)) DSM_Check_RX_packet()
 	uint16_t sum = 384 - 0x10;
 	for(uint8_t i = 1; i < 9; i++)
 	{
-		sum += pkt[i];
+		sum += packet_in[i];
 		if(i<5)
-			if(pkt[i] != (0xff ^ cyrfmfg_id[i-1]))
+			if(packet_in[i] != (0xff ^ cyrfmfg_id[i-1]))
 				result=0; 					// bad packet
 	}
-	if( pkt[9] != (sum>>8)  && pkt[10] != (uint8_t)sum )
+	if( packet_in[9] != (sum>>8)  && packet_in[10] != (uint8_t)sum )
 		result=0;
 	return result;
 }
@@ -377,7 +380,7 @@ uint16_t ReadDsm()
 {
 	#define DSM_CH1_CH2_DELAY	4010			// Time between write of channel 1 and channel 2
 	#ifdef STM32_BOARD
-		#define DSM_WRITE_DELAY		1500		// Time after write to verify write complete
+		#define DSM_WRITE_DELAY		1600		// Time after write to verify write complete
 	#else
 		#define DSM_WRITE_DELAY		1950		// Time after write to verify write complete
 	#endif
@@ -417,12 +420,12 @@ uint16_t ReadDsm()
 			{ // data received with no errors
 				CYRF_WriteRegister(CYRF_07_RX_IRQ_STATUS, 0x80);	// need to set RXOW before data read
 				len=CYRF_ReadRegister(CYRF_09_RX_COUNT);
-				if(len>MAX_PKT-2)
-					len=MAX_PKT-2;
-				CYRF_ReadDataPacketLen(pkt+1, len);
+				if(len>TELEMETRY_BUFFER_SIZE-2)
+					len=TELEMETRY_BUFFER_SIZE-2;
+				CYRF_ReadDataPacketLen(packet_in+1, len);
 				if(len==10 && DSM_Check_RX_packet())
 				{
-					pkt[0]=0x80;
+					packet_in[0]=0x80;
 					telemetry_link=1;						// send received data on serial
 					phase++;
 					return 2000;
@@ -452,6 +455,9 @@ uint16_t ReadDsm()
 			DSM_set_sop_data_crc();
 			return 10000;
 		case DSM_CH1_WRITE_A:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(11000);			// Always request 11ms spacing even if we don't use half of it in 22ms mode
+			#endif
 		case DSM_CH1_WRITE_B:
 		case DSM_CH2_WRITE_A:
 		case DSM_CH2_WRITE_B:
@@ -502,10 +508,10 @@ uint16_t ReadDsm()
 			{ // good data (complete with no errors)
 				CYRF_WriteRegister(CYRF_07_RX_IRQ_STATUS, 0x80);	// need to set RXOW before data read
 				len=CYRF_ReadRegister(CYRF_09_RX_COUNT);
-				if(len>MAX_PKT-2)
-					len=MAX_PKT-2;
-				CYRF_ReadDataPacketLen(pkt+1, len);
-				pkt[0]=CYRF_ReadRegister(CYRF_13_RSSI)&0x1F;// store RSSI of the received telemetry signal
+				if(len>TELEMETRY_BUFFER_SIZE-2)
+					len=TELEMETRY_BUFFER_SIZE-2;
+				CYRF_ReadDataPacketLen(packet_in+1, len);
+				packet_in[0]=CYRF_ReadRegister(CYRF_13_RSSI)&0x1F;// store RSSI of the received telemetry signal
 				telemetry_link=1;
 			}
 			CYRF_WriteRegister(CYRF_29_RX_ABORT, 0x20);		// Abort RX operation

Multiprotocol/Devo_cyrf6936.ino

@@ -272,6 +272,9 @@ uint16_t devo_callback()
 	static uint8_t txState=0;
 	if (txState == 0)
 	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(2400);
+		#endif
 		txState = 1;
 		DEVO_BuildPacket();
 		CYRF_WriteDataPacket(packet);

Multiprotocol/E01X_nrf24l01.ino

@@ -287,7 +287,12 @@ uint16_t E01X_callback()
 		}
 	}
 	else
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(packet_period);
+		#endif
 		E01X_send_packet(0);
+	}
 	return packet_period;
 }
 

Multiprotocol/ESky150_nrf24l01.ino

@@ -92,8 +92,8 @@ static void __attribute__((unused)) ESKY150_send_packet()
 	uint8_t flight_mode=0;
 	uint16_t aux_ch6=0;
 	uint8_t aux_ch7=0;
-	if(option==1)
-	{
+	if(sub_protocol)
+	{ // 7 channels
 		flight_mode=ESKY150_convert_2bit_channel(CH5);
 		aux_ch6=convert_channel_16b_limit(CH6,1000,2000);
 		aux_ch7=ESKY150_convert_2bit_channel(CH7);
@@ -151,7 +151,12 @@ uint8_t ESKY150_convert_2bit_channel(uint8_t num)
 uint16_t ESKY150_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(ESKY150_SENDING_PACKET_PERIOD);
+		#endif
 		ESKY150_send_packet();
+	}
 	else
 	{
 		NRF24L01_WritePayload(packet, ESKY150_PAYLOADSIZE);

Multiprotocol/ESky_nrf24l01.ino

@@ -18,8 +18,13 @@
 
 #include "iface_nrf24l01.h"
 
+//#define ESKY_ET4_FORCE_ID
+
 #define ESKY_BIND_COUNT		1000
-#define ESKY_PACKET_PERIOD	3333
+#define ESKY_STD_PACKET_PERIOD	3333
+#define ESKY_ET4_PACKET_PERIOD	1190
+#define ESKY_ET4_TOTAL_PACKET_PERIOD	20300
+#define ESKY_ET4_BIND_PACKET_PERIOD	5000
 #define ESKY_PAYLOAD_SIZE	13
 #define ESKY_PACKET_CHKTIME	100 // Time to wait for packet to be sent (no ACK, so very short)
 
@@ -63,28 +68,37 @@ static void __attribute__((unused)) ESKY_init()
 static void __attribute__((unused)) ESKY_init2()
 {
 	NRF24L01_FlushTx();
-	hopping_frequency_no = 0;
-	uint16_t channel_ord = rx_tx_addr[0] % 74;
-	hopping_frequency[12] = 10 + (uint8_t)channel_ord;	//channel_code
-	uint8_t channel1, channel2;
-	channel1 = 10 + (uint8_t)((37 + channel_ord*5) % 74);
-	channel2 = 10 + (uint8_t)((     channel_ord*5) % 74) ;
+	if(sub_protocol==ESKY_STD)
+	{
+		uint16_t channel_ord = rx_tx_addr[0] % 74;
+		hopping_frequency[12] = 10 + (uint8_t)channel_ord;	//channel_code
+		uint8_t channel1, channel2;
+		channel1 = 10 + (uint8_t)((37 + channel_ord*5) % 74);
+		channel2 = 10 + (uint8_t)((     channel_ord*5) % 74) ;
 
-	hopping_frequency[0] = channel1;
-	hopping_frequency[1] = channel1;
-	hopping_frequency[2] = channel1;
-	hopping_frequency[3] = channel2;
-	hopping_frequency[4] = channel2;
-	hopping_frequency[5] = channel2;
-
-	//end_bytes
-	hopping_frequency[6] = 6;
-	hopping_frequency[7] = channel1*2;
-	hopping_frequency[8] = channel2*2;
-	hopping_frequency[9] = 6;
-	hopping_frequency[10] = channel1*2;
-	hopping_frequency[11] = channel2*2;
+		hopping_frequency[0] = channel1;
+		hopping_frequency[1] = channel1;
+		hopping_frequency[2] = channel1;
+		hopping_frequency[3] = channel2;
+		hopping_frequency[4] = channel2;
+		hopping_frequency[5] = channel2;
 
+		//end_bytes
+		hopping_frequency[6] = 6;
+		hopping_frequency[7] = channel1*2;
+		hopping_frequency[8] = channel2*2;
+		hopping_frequency[9] = 6;
+		hopping_frequency[10] = channel1*2;
+		hopping_frequency[11] = channel2*2;
+	}
+	else
+	{ // ESKY_ET4
+		hopping_frequency[0]  = 0x29;	//41
+		hopping_frequency[1]  = 0x12;	//18
+		hopping_frequency[6]  = 0x87;	//135 payload end byte
+		hopping_frequency[12] = 0x84;	//132 indicates which channels to use
+	}
+		
 	// Turn radio power on
 	NRF24L01_SetTxRxMode(TX_EN);
 }
@@ -111,20 +125,32 @@ static void __attribute__((unused)) ESKY_send_packet(uint8_t bind)
 	}
 	else
 	{
-		// Regular packet
-		// Each data packet is repeated 3 times on one channel, and 3 times on another channel
-		// For arithmetic simplicity, channels are repeated in rf_channels array
-		if (hopping_frequency_no == 0)
+		if (packet_count == 0)
 			for (uint8_t i = 0; i < 6; i++)
 			{
 				uint16_t val=convert_channel_ppm(CH_AETR[i]);
 				packet[i*2]   = val>>8;		//high byte of servo timing(1000-2000us)
 				packet[i*2+1] = val&0xFF;	//low byte of servo timing(1000-2000us)
 			}
-		rf_ch = hopping_frequency[hopping_frequency_no];
-		packet[12] = hopping_frequency[hopping_frequency_no+6];	// end_bytes
-		hopping_frequency_no++;
-		if (hopping_frequency_no > 6) hopping_frequency_no = 0;
+		if(sub_protocol==ESKY_STD)
+		{
+			// Regular packet
+			// Each data packet is repeated 3 times on one channel, and 3 times on another channel
+			// For arithmetic simplicity, channels are repeated in rf_channels array
+			rf_ch = hopping_frequency[packet_count];
+			packet[12] = hopping_frequency[packet_count+6];	// end_bytes
+			packet_count++;
+			if (packet_count > 6) packet_count = 0;
+		}
+		else
+		{ // ESKY_ET4
+			// Regular packet
+			// Each data packet is repeated 14 times alternating between 2 channels
+			rf_ch = hopping_frequency[packet_count&1];
+			packet_count++;
+			if(packet_count>14) packet_count=0;
+			packet[12] = hopping_frequency[6];	// end_byte
+		}
 	}
 	NRF24L01_WriteReg(NRF24L01_05_RF_CH, rf_ch);
 	NRF24L01_FlushTx();
@@ -135,7 +161,20 @@ static void __attribute__((unused)) ESKY_send_packet(uint8_t bind)
 uint16_t ESKY_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			if(packet_count==0)
+				telemetry_set_input_sync(sub_protocol==ESKY_STD?ESKY_STD_PACKET_PERIOD*6:ESKY_ET4_TOTAL_PACKET_PERIOD);
+		#endif
 		ESKY_send_packet(0);
+		if(sub_protocol==ESKY_ET4)
+		{
+			if(packet_count==0)
+				return ESKY_ET4_TOTAL_PACKET_PERIOD-ESKY_ET4_PACKET_PERIOD*13;
+			else
+				return ESKY_ET4_PACKET_PERIOD;
+		}
+	}
 	else
 	{
 		ESKY_send_packet(1);
@@ -145,16 +184,25 @@ uint16_t ESKY_callback()
 			BIND_DONE;
 		}
 	}
-	return ESKY_PACKET_PERIOD;
+	return ESKY_STD_PACKET_PERIOD;
 }
 
 uint16_t initESKY(void)
 {
 	bind_counter = ESKY_BIND_COUNT;
 	rx_tx_addr[2] = rx_tx_addr[3];	// Model match
+	#ifdef ESKY_ET4_FORCE_ID
+	  if(sub_protocol==ESKY_ET4)
+	  {
+		  rx_tx_addr[0]=0x72;
+		  rx_tx_addr[1]=0xBB;
+		  rx_tx_addr[2]=0xCC;
+	  }
+	#endif
 	rx_tx_addr[3] = 0xBB;
 	ESKY_init();
 	ESKY_init2();
+	packet_count=0;
 	return 50000;
 }
 

Multiprotocol/FQ777_nrf24l01.ino

@@ -188,7 +188,12 @@ uint16_t FQ777_callback()
 		}
 	}
 	else
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(FQ777_PACKET_PERIOD);
+		#endif
 		FQ777_send_packet(0);
+	}
 	return FQ777_PACKET_PERIOD;
 }
 

Multiprotocol/FX816_nrf24l01.ino

@@ -0,0 +1,113 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+// Compatible with FEI XIONG P38 plane.
+
+#if defined(FX816_NRF24L01_INO)
+
+#include "iface_nrf24l01.h"
+
+#define FX816_INITIAL_WAIT    500
+#define FX816_PACKET_PERIOD   10000
+#define FX816_RF_BIND_CHANNEL 0x28		//40
+#define FX816_RF_NUM_CHANNELS 4
+#define FX816_PAYLOAD_SIZE    6
+#define FX816_BIND_COUNT	  300		//3sec
+
+static void __attribute__((unused)) FX816_send_packet()
+{
+	packet[0] = IS_BIND_IN_PROGRESS?0x55:0xAA;
+	packet[1] = rx_tx_addr[0];
+	packet[2] = rx_tx_addr[1];
+	uint8_t val=convert_channel_8b(AILERON);
+	#define FX816_SWITCH 20
+	if(val>127+FX816_SWITCH)
+		packet[3] = 1;
+	else if(val<127-FX816_SWITCH)
+		packet[3] = 2;
+	else
+		packet[3] = 0;
+	packet[4] = convert_channel_16b_limit(THROTTLE,0,100);
+	val=0;
+	for(uint8_t i=0;i<FX816_PAYLOAD_SIZE-1;i++)
+		val+=packet[i];
+	packet[5]=val;
+
+	NRF24L01_WriteReg(NRF24L01_05_RF_CH, IS_BIND_IN_PROGRESS ? FX816_RF_BIND_CHANNEL:hopping_frequency[hopping_frequency_no++]);
+	hopping_frequency_no%=FX816_RF_NUM_CHANNELS;
+
+	// clear packet status bits and TX FIFO
+	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
+	NRF24L01_FlushTx();
+	XN297_WritePayload(packet, FX816_PAYLOAD_SIZE);
+
+	// Power on, TX mode, 2byte CRC
+	XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP));
+
+	NRF24L01_SetPower();	// Set tx_power
+}
+
+static void __attribute__((unused)) FX816_init()
+{
+	NRF24L01_Initialize();
+	NRF24L01_SetTxRxMode(TX_EN);
+	XN297_SetTXAddr((uint8_t *)"\xcc\xcc\xcc\xcc\xcc", 5);
+	NRF24L01_FlushTx();
+	NRF24L01_FlushRx();
+	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);     	// Clear data ready, data sent, and retransmit
+	NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);      	// No Auto Acknowldgement on all data pipes
+	NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);  	// Enable data pipe 0 only
+	NRF24L01_SetBitrate(NRF24L01_BR_1M);             	// 1Mbps
+	NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0x00);	// No retransmits
+	NRF24L01_SetPower();
+	NRF24L01_Activate(0x73);							// Activate feature register
+	NRF24L01_WriteReg(NRF24L01_1C_DYNPD, 0x00);			// Disable dynamic payload length on all pipes
+	NRF24L01_WriteReg(NRF24L01_1D_FEATURE, 0x01);
+	NRF24L01_Activate(0x73);
+}
+
+static void __attribute__((unused)) FX816_initialize_txid()
+{
+	//Only 8 IDs: the RX led does not indicate frame loss.
+	//I didn't open the plane to find out if I could connect there so this is the best I came up with with few trial and errors...
+	rx_tx_addr[0]=0x35+(rx_tx_addr[3]&0x07);							//Original dump=0x35
+	rx_tx_addr[1]=0x09;													//Original dump=0x09
+	memcpy(hopping_frequency,"\x09\x1B\x30\x42",FX816_RF_NUM_CHANNELS); //Original dump=9=0x09,27=0x1B,48=0x30,66=0x42
+	for(uint8_t i=0;i<FX816_RF_NUM_CHANNELS;i++)
+		hopping_frequency[i]+=rx_tx_addr[3]&0x07;
+}
+
+uint16_t FX816_callback()
+{
+	#ifdef MULTI_SYNC
+		telemetry_set_input_sync(FX816_PACKET_PERIOD);
+	#endif
+	if(IS_BIND_IN_PROGRESS)
+		if(--bind_counter==0)
+			BIND_DONE;
+	FX816_send_packet();
+	return FX816_PACKET_PERIOD;
+}
+
+uint16_t initFX816()
+{
+	BIND_IN_PROGRESS;	// autobind protocol
+	FX816_initialize_txid();
+	FX816_init();
+	hopping_frequency_no = 0;
+	bind_counter=FX816_BIND_COUNT;
+	return FX816_INITIAL_WAIT;
+}
+
+#endif

Multiprotocol/FY326_nrf24l01.ino

@@ -188,6 +188,9 @@ uint16_t FY326_callback()
 				return FY326_PACKET_CHKTIME;
 			break;
 		case FY326_DATA:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(FY326_PACKET_PERIOD);
+			#endif
 			FY326_send_packet(0);
 			break;
 	}

Multiprotocol/FlySky_a7105.ino

@@ -145,7 +145,7 @@ static void __attribute__((unused)) flysky_build_packet(uint8_t init)
 	for(i = 0; i < 8; i++)
 	{
 		uint16_t temp=convert_channel_ppm(CH_AETR[i]);
-		if(sub_protocol == CX20 && CH_AETR[i]==ELEVATOR)
+		if(sub_protocol == CX20 && i==CH2) //ELEVATOR
 			temp=3000-temp;
 		packet[5 + i*2]=temp&0xFF;		//low byte of servo timing(1000-2000us)
 		packet[6 + i*2]=(temp>>8)&0xFF;	//high byte of servo timing(1000-2000us)
@@ -168,16 +168,15 @@ uint16_t ReadFlySky()
 	}
 	else
 	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(packet_period);
+		#endif
 		flysky_build_packet(0);
 		A7105_WriteData(21, hopping_frequency[hopping_frequency_no & 0x0F]);
 		A7105_SetPower();
 	}
 	hopping_frequency_no++;
-
-	if(sub_protocol==CX20)
-		return 3984;
-	else
-		return 1510;	//1460 on deviation but not working with the latest V911 bricks... Turnigy 9X v2 is 1533, Flysky TX for 9XR/9XR Pro is 1510, V911 TX is 1490.
+	return packet_period;
 }
 
 const uint8_t PROGMEM tx_channels[8][4] = {
@@ -235,6 +234,10 @@ uint16_t initFlySky()
 	}
 	hopping_frequency_no=0;
 	packet_count=0;
+	if(sub_protocol==CX20)
+		packet_period=3984;
+	else
+		packet_period=1510;	//1460 on deviation but not working with the latest V911 bricks... Turnigy 9X v2 is 1533, Flysky TX for 9XR/9XR Pro is 1510, V911 TX is 1490.
 	if(IS_BIND_IN_PROGRESS)
 		bind_counter = FLYSKY_BIND_COUNT;
 	else

Multiprotocol/Flyzone_a7105.ino

@@ -32,7 +32,7 @@ static void __attribute__((unused)) flyzone_build_packet()
 	packet[4] = convert_channel_8b(ELEVATOR);	//00..80..FF
 	packet[5] = convert_channel_8b(THROTTLE);	//00..FF
 	packet[6] = convert_channel_8b(RUDDER);		//00..80..FF
-    packet[7] = 0xFF;
+    packet[7] = convert_channel_8b(CH5);		//00..80..FF
 }
 
 uint16_t ReadFlyzone()
@@ -55,6 +55,9 @@ uint16_t ReadFlyzone()
 		if(phase>19)
 		{
 			phase=0;
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(20*1500);
+			#endif
 			flyzone_build_packet();
 			A7105_WriteData(8, hopping_frequency[0]);
 			A7105_SetPower();

Multiprotocol/FrSkyDVX_common.ino

@@ -13,175 +13,33 @@
  along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifdef ENABLE_PPM
-void InitPPM()
-{
-	for(uint8_t i=0;i<NUM_CHN;i++)
-		PPM_data[i]=PPM_MAX_100+PPM_MIN_100;
-	PPM_data[THROTTLE]=PPM_MIN_100*2;
-}
-#endif
-void InitChannel()
-{
-	for(uint8_t i=0;i<NUM_CHN;i++)
-		Channel_data[i]=1024;
-	#ifdef FAILSAFE_THROTTLE_LOW_VAL
-		Channel_data[THROTTLE]=(uint16_t)FAILSAFE_THROTTLE_LOW_VAL;	//0=-125%, 204=-100%
-	#else
-		Channel_data[THROTTLE]=204;
-	#endif
-}
-/************************/
-/**  Convert routines  **/
-/************************/
-// Convert channel 8b with limit and deadband
-uint8_t convert_channel_8b_limit_deadband(uint8_t num,uint8_t min,uint8_t mid, uint8_t max, uint8_t deadband)
-{
-	uint16_t val=limit_channel_100(num);		// 204<->1844
-	uint16_t db_low=CHANNEL_MID-deadband, db_high=CHANNEL_MID+deadband; // 1024+-deadband
-	int32_t calc;
-	uint8_t out;
-	if(val>=db_low && val<=db_high)
-		return mid;
-	else if(val<db_low)
-	{
-		val-=CHANNEL_MIN_100;
-		calc=mid-min;
-		calc*=val;
-		calc/=(db_low-CHANNEL_MIN_100);
-		out=calc;
-		out+=min;
-	}
-	else
-	{
-		val-=db_high;
-		calc=max-mid;
-		calc*=val;
-		calc/=(CHANNEL_MAX_100-db_high+1);
-		out=calc;
-		out+=mid;
-		if(max>min) out++; else out--;
-	}
-	return out;
-}
-
-// Reverse a channel and store it
-void reverse_channel(uint8_t num)
-{
-	uint16_t val=2048-Channel_data[num];
-	if(val>=2048) val=2047;
-	Channel_data[num]=val;
-}
-// Channel value is converted to ppm 860<->2140 -125%<->+125% and 988<->2012 -100%<->+100%
-uint16_t convert_channel_ppm(uint8_t num)
-{
-	uint16_t val=Channel_data[num];
-	return (((val<<2)+val)>>3)+860;				//value range 860<->2140 -125%<->+125%
-}
-// Channel value 100% is converted to 10bit values 0<->1023
-uint16_t convert_channel_10b(uint8_t num)
-{
-	uint16_t val=Channel_data[num];
-	val=((val<<2)+val)>>3;
-	if(val<=128) return 0;
-	if(val>=1152) return 1023;
-	return val-128;
-}
-// Channel value 100% is converted to 8bit values 0<->255
-uint8_t convert_channel_8b(uint8_t num)
-{
-	uint16_t val=Channel_data[num];
-	val=((val<<2)+val)>>5;
-	if(val<=32) return 0;
-	if(val>=288) return 255;
-	return val-32;
-}
-
-// Channel value 100% is converted to value scaled
-int16_t convert_channel_16b_limit(uint8_t num,int16_t min,int16_t max)
-{
-	int32_t val=limit_channel_100(num);			// 204<->1844
-	val=(val-CHANNEL_MIN_100)*(max-min)/(CHANNEL_MAX_100-CHANNEL_MIN_100)+min;
-	return (uint16_t)val;
-}
-
-// Channel value -125%<->125% is scaled to 16bit value with no limit
-int16_t convert_channel_16b_nolimit(uint8_t num, int16_t min, int16_t max)
-{
-	int32_t val=Channel_data[num];				// 0<->2047
-	val=(val-CHANNEL_MIN_100)*(max-min)/(CHANNEL_MAX_100-CHANNEL_MIN_100)+min;
-	return (uint16_t)val;
-}
-
-// Channel value is converted sign + magnitude 8bit values
-uint8_t convert_channel_s8b(uint8_t num)
-{
-	uint8_t ch;
-	ch = convert_channel_8b(num);
-	return (ch < 128 ? 127-ch : ch);	
-}
-
-// Channel value is limited to 100%
-uint16_t limit_channel_100(uint8_t num)
-{
-	if(Channel_data[num]>=CHANNEL_MAX_100)
-		return CHANNEL_MAX_100;
-	if (Channel_data[num]<=CHANNEL_MIN_100)
-		return CHANNEL_MIN_100;
-	return Channel_data[num];
-}
-
-// Channel value is converted for HK310
-void convert_channel_HK310(uint8_t num, uint8_t *low, uint8_t *high)
-{
-	uint16_t temp=0xFFFF-(3440+((Channel_data[num]*5)>>1))/3;
-	*low=(uint8_t)(temp&0xFF);
-	*high=(uint8_t)(temp>>8);
-}
-#ifdef FAILSAFE_ENABLE
-// Failsafe value is converted for HK310
-void convert_failsafe_HK310(uint8_t num, uint8_t *low, uint8_t *high)
-{
-	uint16_t temp=0xFFFF-(3440+((Failsafe_data[num]*5)>>1))/3;
-	*low=(uint8_t)(temp&0xFF);
-	*high=(uint8_t)(temp>>8);
-}
-#endif
-
-// Channel value for FrSky (PPM is multiplied by 1.5)
-uint16_t convert_channel_frsky(uint8_t num)
-{
-	uint16_t val=Channel_data[num];
-	return ((val*15)>>4)+1290;
-}
-
 /******************************/
 /**  FrSky D and X routines  **/
 /******************************/
 
-#if defined(FRSKYX_CC2500_INO) || defined(FRSKYX_RX_CC2500_INO)
+#if defined(FRSKYX_CC2500_INO) || defined(FRSKYL_CC2500_INO) || defined(FRSKY_RX_CC2500_INO) || defined(FRSKYR9_SX1276_INO)
 //**CRC**
-const uint16_t PROGMEM frskyX_CRC_Short[]={
+const uint16_t PROGMEM FrSkyX_CRC_Short[]={
 	0x0000, 0x1189, 0x2312, 0x329B, 0x4624, 0x57AD, 0x6536, 0x74BF,
 	0x8C48, 0x9DC1, 0xAF5A, 0xBED3, 0xCA6C, 0xDBE5, 0xE97E, 0xF8F7 };
-static uint16_t __attribute__((unused)) frskyX_CRCTable(uint8_t val)
+static uint16_t __attribute__((unused)) FrSkyX_CRCTable(uint8_t val)
 {
 	uint16_t word ;
-	word = pgm_read_word(&frskyX_CRC_Short[val&0x0F]) ;
+	word = pgm_read_word(&FrSkyX_CRC_Short[val&0x0F]) ;
 	val /= 16 ;
 	return word ^ (0x1081 * val) ;
 }
-uint16_t frskyX_crc_x(uint8_t *data, uint8_t len)
+uint16_t FrSkyX_crc(uint8_t *data, uint8_t len, uint8_t init=0)
 {
-	uint16_t crc = 0;
+	uint16_t crc = init;
 	for(uint8_t i=0; i < len; i++)
-		crc = (crc<<8) ^ frskyX_CRCTable((uint8_t)(crc>>8) ^ *data++);
+		crc = (crc<<8) ^ FrSkyX_CRCTable((uint8_t)(crc>>8) ^ *data++);
 	return crc;
 }
 #endif
 
 
-#if defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO)
+#if defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO) || defined(FRSKYX_CC2500_INO) || defined(FRSKYL_CC2500_INO) || defined(FRSKY_RX_CC2500_INO)
 enum {
 	FRSKY_BIND		= 0,
 	FRSKY_BIND_DONE	= 1000,
@@ -189,9 +47,11 @@ enum {
 	FRSKY_DATA2,
 	FRSKY_DATA3,
 	FRSKY_DATA4,
-	FRSKY_DATA5
+	FRSKY_DATA5,
 };
 
+uint8_t FrSkyFormat=0;
+
 void Frsky_init_hop(void)
 {
 	uint8_t val;
@@ -212,11 +72,72 @@ void Frsky_init_hop(void)
 		hopping_frequency[i]=i>46?0:val;
 	}
 }
+
+void FrSkyX2_init_hop(void)
+{
+	uint16_t id=(rx_tx_addr[2]<<8) + rx_tx_addr[3];
+	//Increment
+	uint8_t inc = (id % 46) + 1;
+	if( inc == 12 || inc ==35 ) inc++;							//Exception list from dumps
+	//Start offset
+	uint8_t offset = id % 5;
+
+	debug("hop: ");
+	uint8_t channel;
+	for(uint8_t i=0; i<47; i++)
+	{
+		channel = 5 * (uint16_t(inc * i) % 47) + offset;
+		//Exception list from dumps
+		if(FrSkyFormat & 2 )// LBT or FCC
+		{//LBT
+			if( channel <=1 || channel == 43 || channel == 44 || channel == 87 || channel == 88 || channel == 129 || channel == 130 || channel == 173 || channel == 174)
+				channel += 2;
+			else if( channel == 216 || channel == 217 || channel == 218)
+				channel += 3;
+		}
+		else //FCC
+			if ( channel == 3 || channel == 4 || channel == 46 || channel == 47 || channel == 90 || channel == 91  || channel == 133 || channel == 134 || channel == 176 || channel == 177 || channel == 220 || channel == 221 )
+				channel += 2;
+		//Store
+		hopping_frequency[i] = channel;
+		debug(" %02X",channel);
+	}
+	debugln("");
+	hopping_frequency[47] = 0;									//Bind freq
+}
+
+void Frsky_init_clone(void)
+{
+	debugln("Clone mode");
+	uint16_t temp = FRSKYD_CLONE_EEPROM_OFFSET;
+	if(protocol==PROTO_FRSKYX)
+		temp=FRSKYX_CLONE_EEPROM_OFFSET;
+	else if(protocol==PROTO_FRSKYX2)
+		temp=FRSKYX2_CLONE_EEPROM_OFFSET;
+	FrSkyFormat=eeprom_read_byte((EE_ADDR)temp++);
+	if(protocol==PROTO_FRSKYX)
+		FrSkyFormat >>= 1;
+	else
+		FrSkyFormat >>= 2;
+	FrSkyFormat <<= 1;	//FCC_16/LBT_16
+	rx_tx_addr[3] = eeprom_read_byte((EE_ADDR)temp++);
+	rx_tx_addr[2] = eeprom_read_byte((EE_ADDR)temp++);
+	rx_tx_addr[1] = eeprom_read_byte((EE_ADDR)temp++);
+	memset(hopping_frequency,0x00,50);
+	if(protocol!=PROTO_FRSKYX2)
+	{//D8 and D16v1
+		for (uint8_t ch = 0; ch < 47; ch++)
+			hopping_frequency[ch] = eeprom_read_byte((EE_ADDR)temp++);
+	}
+	else
+		FrSkyX2_init_hop();
+}
+
 #endif
 /******************************/
 /**  FrSky V, D and X routines  **/
 /******************************/
-#if defined(FRSKYV_CC2500_INO) || defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO)
+#if defined(FRSKYV_CC2500_INO) || defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO) || defined(FRSKYL_CC2500_INO)
 	const PROGMEM uint8_t FRSKY_common_startreg_cc2500_conf[]= {
 		 CC2500_02_IOCFG0 ,		
 		 CC2500_00_IOCFG2 ,
@@ -284,48 +205,68 @@ void Frsky_init_hop(void)
 		/*15_DEVIATN*/ 	 0x42  };
 	#endif
 
-	#if defined(FRSKYX_CC2500_INO)
+	#if defined(FRSKYX_CC2500_INO) || defined(FRSKYL_CC2500_INO)
 		const PROGMEM uint8_t FRSKYX_cc2500_conf[]= {
 	//FRSKYX
-		/*02_IOCFG0*/  	 0x06 ,		
+		/*02_IOCFG0*/  	 0x06 ,
 		/*00_IOCFG2*/  	 0x06 ,
-		/*17_MCSM1*/   	 0x0c ,
+		/*17_MCSM1*/   	 0x0c ,	//X2->0x0E -> Go/Stay in RX mode
 		/*18_MCSM0*/   	 0x18 ,
 		/*06_PKTLEN*/  	 0x1E ,
 		/*07_PKTCTRL1*/	 0x04 ,
-		/*08_PKTCTRL0*/	 0x01 ,
+		/*08_PKTCTRL0*/	 0x01 , //X2->0x05 -> CRC enabled
 		/*3E_PATABLE*/ 	 0xff ,
 		/*0B_FSCTRL1*/ 	 0x0A ,
 		/*0C_FSCTRL0*/ 	 0x00 ,
 		/*0D_FREQ2*/   	 0x5c ,	
 		/*0E_FREQ1*/   	 0x76 ,
 		/*0F_FREQ0*/   	 0x27 ,
-		/*10_MDMCFG4*/ 	 0x7B ,		
-		/*11_MDMCFG3*/ 	 0x61 ,
+		/*10_MDMCFG4*/ 	 0x7B ,
+		/*11_MDMCFG3*/ 	 0x61 ,	//X2->0x84 -> bitrate 70K->77K
 		/*12_MDMCFG2*/ 	 0x13 ,
 		/*13_MDMCFG1*/ 	 0x23 ,
 		/*14_MDMCFG0*/ 	 0x7a ,
 		/*15_DEVIATN*/ 	 0x51  };
 		const PROGMEM uint8_t FRSKYXEU_cc2500_conf[]= {
-		/*02_IOCFG0*/  	 0x06 ,		
+		/*02_IOCFG0*/  	 0x06 ,
 		/*00_IOCFG2*/  	 0x06 ,
 		/*17_MCSM1*/   	 0x0E ,
 		/*18_MCSM0*/   	 0x18 ,
 		/*06_PKTLEN*/  	 0x23 ,
 		/*07_PKTCTRL1*/	 0x04 ,
-		/*08_PKTCTRL0*/	 0x01 ,
+		/*08_PKTCTRL0*/	 0x01 , //X2->0x05 -> CRC enabled
 		/*3E_PATABLE*/ 	 0xff ,
 		/*0B_FSCTRL1*/ 	 0x08 ,
 		/*0C_FSCTRL0*/ 	 0x00 ,
-		/*0D_FREQ2*/   	 0x5c ,	
+		/*0D_FREQ2*/   	 0x5c ,
 		/*0E_FREQ1*/   	 0x80 ,
 		/*0F_FREQ0*/   	 0x00 ,
-		/*10_MDMCFG4*/ 	 0x7B ,		
+		/*10_MDMCFG4*/ 	 0x7B ,
 		/*11_MDMCFG3*/ 	 0xF8 ,
 		/*12_MDMCFG2*/ 	 0x03 ,
 		/*13_MDMCFG1*/ 	 0x23 ,
 		/*14_MDMCFG0*/ 	 0x7a ,
 		/*15_DEVIATN*/ 	 0x53  };
+		const PROGMEM uint8_t FRSKYL_cc2500_conf[]= {
+		/*02_IOCFG0*/  	 0x02 ,
+		/*00_IOCFG2*/  	 0x02 ,
+		/*17_MCSM1*/   	 0x0C ,
+		/*18_MCSM0*/   	 0x18 ,
+		/*06_PKTLEN*/  	 0xFF ,
+		/*07_PKTCTRL1*/	 0x00 ,
+		/*08_PKTCTRL0*/	 0x02 ,
+		/*3E_PATABLE*/ 	 0xFE ,
+		/*0B_FSCTRL1*/ 	 0x0A ,
+		/*0C_FSCTRL0*/ 	 0x00 ,
+		/*0D_FREQ2*/   	 0x5c ,
+		/*0E_FREQ1*/   	 0x76 ,
+		/*0F_FREQ0*/   	 0x27 ,
+		/*10_MDMCFG4*/ 	 0x5C ,
+		/*11_MDMCFG3*/ 	 0x3B ,
+		/*12_MDMCFG2*/ 	 0x00 ,
+		/*13_MDMCFG1*/ 	 0x03 ,
+		/*14_MDMCFG0*/ 	 0x7A ,
+		/*15_DEVIATN*/ 	 0x47  };
 	#endif
 
 	const PROGMEM uint8_t FRSKY_common_end_cc2500_conf[][2]= {
@@ -369,3 +310,63 @@ void Frsky_init_hop(void)
 		CC2500_Strobe(CC2500_SIDLE);    // Go to idle...
 	}
 #endif
+
+#if defined(FRSKYX_CC2500_INO) || defined(FRSKYL_CC2500_INO)
+uint8_t FrSkyX_chanskip;
+uint8_t FrSkyX_TX_Seq, FrSkyX_TX_IN_Seq;
+uint8_t FrSkyX_RX_Seq ;
+
+#ifdef SPORT_SEND
+	struct t_FrSkyX_TX_Frame
+	{
+		uint8_t count;
+		uint8_t payload[8];
+	} ;
+	// Store FrskyX telemetry
+	struct t_FrSkyX_TX_Frame FrSkyX_TX_Frames[4] ;
+#endif
+
+#define FRSKYX_FAILSAFE_TIMEOUT 1032
+
+static void __attribute__((unused)) FrSkyX_set_start(uint8_t ch )
+{
+	CC2500_Strobe(CC2500_SIDLE);
+	CC2500_WriteReg(CC2500_25_FSCAL1, calData[ch]);
+	CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[ch]);
+}		
+
+static void __attribute__((unused)) FrSkyX_init()
+{
+	if(protocol==PROTO_FRSKYL)
+		FRSKY_init_cc2500(FRSKYL_cc2500_conf);
+	else
+		FRSKY_init_cc2500((FrSkyFormat&2)?FRSKYXEU_cc2500_conf:FRSKYX_cc2500_conf); // LBT or FCC
+	if(protocol==PROTO_FRSKYX2)
+	{
+		CC2500_WriteReg(CC2500_08_PKTCTRL0, 0x05);		// Enable CRC
+		if(!(FrSkyFormat&2))
+		{ // FCC
+			CC2500_WriteReg(CC2500_17_MCSM1, 0x0E);		// Go/Stay in RX mode
+			CC2500_WriteReg(CC2500_11_MDMCFG3, 0x84);	// bitrate 70K->77K
+		}
+	}
+	//
+	for(uint8_t c=0;c < 48;c++)
+	{//calibrate hop channels
+		CC2500_Strobe(CC2500_SIDLE);    
+		CC2500_WriteReg(CC2500_0A_CHANNR,hopping_frequency[c]);
+		CC2500_Strobe(CC2500_SCAL);
+		delayMicroseconds(900);//
+		calData[c] = CC2500_ReadReg(CC2500_25_FSCAL1);
+	}
+	//#######END INIT########		
+}
+
+static void __attribute__((unused)) FrSkyX_initialize_data(uint8_t adr)
+{
+	CC2500_WriteReg(CC2500_18_MCSM0,    0x8);	
+	CC2500_WriteReg(CC2500_09_ADDR, adr ? 0x03 : rx_tx_addr[3]);
+	CC2500_WriteReg(CC2500_07_PKTCTRL1,0x05);	// check address
+}
+
+#endif

Multiprotocol/FrSkyD_cc2500.ino

@@ -21,6 +21,7 @@ static void __attribute__((unused)) frsky2way_init(uint8_t bind)
 {
 	FRSKY_init_cc2500(FRSKYD_cc2500_conf);	
 
+	CC2500_WriteReg(CC2500_1B_AGCCTRL2, bind ? 0x43 : 0x03);
 	CC2500_WriteReg(CC2500_09_ADDR, bind ? 0x03 : rx_tx_addr[3]);
 	CC2500_WriteReg(CC2500_07_PKTCTRL1, 0x05);
 	CC2500_Strobe(CC2500_SIDLE);	// Go to idle...
@@ -95,11 +96,21 @@ static void __attribute__((unused)) frsky2way_data_frame()
 
 uint16_t initFrSky_2way()
 {
-	Frsky_init_hop();
+	//FrskyD init hop
+	if (sub_protocol==DCLONE)
+		Frsky_init_clone();
+	else
+		for(uint8_t i=0;i<50;i++)
+		{
+			uint8_t freq = (i * 0x1e) % 0xeb;
+			if(i == 3 || i == 23 || i == 47)
+				freq++;
+			if(i > 47)
+				freq=0;
+			hopping_frequency[i]=freq;
+		}
+	
 	packet_count=0;
-	#if defined TELEMETRY
-		init_frskyd_link_telemetry();
-	#endif
 	if(IS_BIND_IN_PROGRESS)
 	{
 		frsky2way_init(1);
@@ -156,15 +167,18 @@ uint16_t ReadFrSky_2way()
 	{
 		if (state == FRSKY_DATA1)
 		{
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(9000);
+			#endif
 			len = CC2500_ReadReg(CC2500_3B_RXBYTES | CC2500_READ_BURST) & 0x7F;
 			if (len && len<=(0x11+3))// 20bytes
 			{		
-				CC2500_ReadData(pkt, len);				//received telemetry packets
+				CC2500_ReadData(packet_in, len);				//received telemetry packets
 				#if defined(TELEMETRY)
-					if(pkt[len-1] & 0x80)
+					if(packet_in[len-1] & 0x80)
 					{//with valid crc
 						packet_count=0;
-						frsky_check_telemetry(pkt,len);	//check if valid telemetry packets and buffer them.
+						frsky_check_telemetry(packet_in,len);	//check if valid telemetry packets and buffer them.
 					}
 				#endif
 			}
@@ -177,7 +191,7 @@ uint16_t ReadFrSky_2way()
 					packet_count=0;
 					#if defined TELEMETRY
 						telemetry_link=0;//no link frames
-						pkt[6]=0;//no user frames.
+						packet_in[6]=0;//no user frames.
 					#endif
 				}
 			}

Multiprotocol/FrSkyL_cc2500.ino

@@ -0,0 +1,262 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+#if defined(FRSKYL_CC2500_INO)
+
+#include "iface_cc2500.h"
+
+//#define FRSKYL_FORCE_ID
+#define FRSKYL_PACKET_LEN	256
+#define FRSKYL_PERIOD		18000
+
+uint8_t FrSkyL_buffer[FRSKYL_PACKET_LEN];
+
+static void __attribute__((unused)) FrSkyL_build_bind_packet()
+{
+	//Header
+	packet[0] = 0x4E;				// Unknown but constant
+	//Bind packet
+	memset(&packet[1],0x00,3);
+	//ID
+	packet[4 ] = rx_tx_addr[3];		// ID
+	packet[5 ] = rx_tx_addr[2];		// ID
+	int idx = ((state -FRSKY_BIND) % 10) * 5;
+	packet[6 ] = idx;
+	packet[7 ] = hopping_frequency[idx++];
+	packet[8 ] = hopping_frequency[idx++];
+	packet[9 ] = hopping_frequency[idx++];
+	packet[10] = hopping_frequency[idx++];
+	packet[11] = hopping_frequency[idx++];
+	packet[12] = rx_tx_addr[1];		// ID or hw ver?
+	packet[13] = RX_num;
+	packet[14] = 0x00;				// Unknown but constant
+	//CRC
+	uint16_t lcrc = FrSkyX_crc(&packet[1], 14);
+	packet[15] = lcrc >> 8;
+	packet[16] = lcrc;
+	//Debug
+/*	debug("Bind:");
+	for(uint8_t i=0;i<17;i++)
+		debug(" %02X",packet[i]);
+	debugln("");*/
+}
+
+static void __attribute__((unused)) FrSkyL_build_packet()
+{
+	static uint8_t chan_offset=0;
+	uint16_t chan_0,chan_1;
+
+	//Header
+	packet[0 ] = 0x4E;				// Unknown but constant
+	//ID
+	packet[1 ] = rx_tx_addr[3];		// ID
+	packet[2 ] = rx_tx_addr[2];		// ID
+	packet[3 ] = rx_tx_addr[1];		// ID or hw ver?
+	//skip_hop
+	packet[4 ] = (FrSkyX_chanskip<<6)|hopping_frequency_no; 
+	packet[5 ] = FrSkyX_chanskip>>2;
+	//Channels
+	uint8_t startChan = chan_offset;
+	for(uint8_t i = 0; i <9 ; i+=3)
+	{//9 bytes of channel data
+		chan_0 = FrSkyX_scaleForPXX(startChan,6);
+		startChan++;
+		//
+		chan_1 = FrSkyX_scaleForPXX(startChan,6);
+		startChan++;
+		//
+		packet[6+i] = lowByte(chan_0);									//3 bytes*4
+		packet[6+i+1]=(((chan_0>>8) & 0x0F)|(chan_1 << 4));
+		packet[6+i+2]=chan_1>>4;
+	}
+	if(sub_protocol & 0x01 )											//6ch mode only??
+		chan_offset = 0 ;
+	else
+		chan_offset^=0x06;
+	//CRC
+	uint16_t lcrc = FrSkyX_crc(&packet[1], 14, RX_num);
+	packet[15] = lcrc >> 8;
+	packet[16] = lcrc;
+	//Debug
+	/*debug("Norm:");
+	for(uint8_t i=0;i<17;i++)
+		debug(" %02X",packet[i]);
+	debugln("");*/
+}
+
+static void __attribute__((unused))  FrSkyL_encode_packet(bool type)
+{
+	#define FRSKYL_BIT0 0xED
+	#define FRSKYL_BIT1 0x712
+	
+	uint32_t bits = 0;
+	uint8_t bitsavailable = 0;
+	uint8_t idx = 0,len=6;
+	if(type)
+	{//just replace packet content
+		idx=66;
+		len=17;
+	}
+
+	//debugln("Encode:");
+	for (uint8_t i = 0; i < len; i++)
+	{
+		uint8_t tmp=packet[i];
+		//debug("%02X =",tmp);
+		for(uint8_t j=0;j<8;j++)
+		{
+			bits <<= 11;
+			if(tmp&0x01)
+				bits |= FRSKYL_BIT1;
+			else
+				bits |= FRSKYL_BIT0;
+			tmp >>=1;
+			bitsavailable += 11;
+			while (bitsavailable >= 8) {
+				uint32_t bits_tmp=bits>>(bitsavailable-8);
+				bitsavailable -= 8;
+				FrSkyL_buffer[idx] = bits_tmp;
+				//debug(" %02X",FrSkyL_buffer[idx]);
+				idx++;
+			}
+		}
+		//debugln("");
+	}
+}
+
+uint16_t ReadFrSkyL()
+{
+	static uint8_t written=0, send=0;
+	switch(send)
+	{
+		case 1:
+			CC2500_Strobe(CC2500_SIDLE);
+			CC2500_Strobe(CC2500_SFTX);
+			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, FrSkyL_buffer, 64);
+			CC2500_Strobe(CC2500_STX);
+			CC2500_Strobe(CC2500_SIDLE);	// This cancels the current transmission???
+			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, FrSkyL_buffer, 64);
+			CC2500_Strobe(CC2500_SFTX);		// This just clears what we've written???
+			CC2500_Strobe(CC2500_STX);
+			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, FrSkyL_buffer, 64);
+			written=64;
+			send++;
+			return 2623;
+		case 2:
+			len=FRSKYL_PACKET_LEN-written;
+			if(len>31)
+				len=31;
+			CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, FrSkyL_buffer+written, len);
+			written+=len;
+			if(len!=31)			//everything has been sent
+			{
+				send=0;
+				return 2936;
+			}
+			return 1984;
+	}
+	
+	switch(state)
+	{	
+		default: 
+			//Bind
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(9000);
+			#endif
+			FrSkyX_set_start(47);
+			CC2500_SetPower();
+			CC2500_Strobe(CC2500_SFRX);
+			//		
+			FrSkyL_build_bind_packet();
+			FrSkyL_encode_packet(true);
+
+			CC2500_Strobe(CC2500_SIDLE);
+			if(IS_BIND_DONE)
+				state = FRSKY_BIND_DONE;
+			else
+			{
+				state++;
+				send=1;
+			}
+			return 537;
+		case FRSKY_BIND_DONE:
+			FrSkyX_initialize_data(0);
+			hopping_frequency_no=0;
+			BIND_DONE;
+			state++;													//FRSKY_DATA1
+			break;
+
+		case FRSKY_DATA1:
+			if ( prev_option != option )
+			{
+				CC2500_WriteReg(CC2500_0C_FSCTRL0,option);				//Frequency offset hack 
+				prev_option = option ;
+			}
+			FrSkyX_set_start(hopping_frequency_no);
+			FrSkyL_build_packet();
+			FrSkyL_encode_packet(true);
+			CC2500_SetPower();
+			hopping_frequency_no = (hopping_frequency_no+FrSkyX_chanskip)%47;
+			send=1;
+			return 537;
+	}		
+	return 1;		
+}
+
+uint16_t initFrSkyL()
+{
+	set_rx_tx_addr(MProtocol_id_master);
+	rx_tx_addr[1]=0x02;		// ID related, hw version?
+
+	#ifdef FRSKYL_FORCE_ID
+		rx_tx_addr[3]=0x0E;
+		rx_tx_addr[2]=0x1C;
+		rx_tx_addr[1]=0x02;
+	#endif
+	FrSkyX2_init_hop();
+	
+	while(!FrSkyX_chanskip)
+		FrSkyX_chanskip=random(0xfefefefe)%47;
+
+	FrSkyX_init();
+
+	//Prepare frame
+	memset(FrSkyL_buffer,0x00,FRSKYL_PACKET_LEN-3);
+	memset(&FrSkyL_buffer[FRSKYL_PACKET_LEN-3],0x55,3);
+	memset(packet,0xAA,6);
+	FrSkyL_encode_packet(false);
+	/*debugln("Frame:");
+	for(uint16_t i=0;i<FRSKYL_PACKET_LEN;i++)
+	{
+		debug(" %02X",FrSkyL_buffer[i]);
+		if(i%11==10)
+			debugln("");
+	}
+	debugln("");*/
+	
+	if(IS_BIND_IN_PROGRESS)
+	{	   
+		state = FRSKY_BIND;
+		FrSkyX_initialize_data(1);
+	}
+	else
+	{
+		state = FRSKY_DATA1;
+		FrSkyX_initialize_data(0);
+	}
+	return 10000;
+}	
+#endif

Multiprotocol/FrSkyR9_sx1276.ino

@@ -0,0 +1,208 @@
+#if defined(FRSKYR9_SX1276_INO)
+#include "iface_sx1276.h"
+
+#define FREQ_MAP_SIZE				29
+
+// TODO the channel spacing is equal, consider calculating the new channel instead of using lookup tables (first_chan + index * step)
+
+static uint32_t FrSkyR9_freq_map_915[FREQ_MAP_SIZE] =
+{
+	914472960,
+	914972672,
+	915472384,
+	915972096,
+	916471808,
+	916971520,
+	917471232,
+	917970944,
+	918470656,
+	918970368,
+	919470080,
+	919969792,
+	920469504,
+	920969216,
+	921468928,
+	921968640,
+	922468352,
+	922968064,
+	923467776,
+	923967488,
+	924467200,
+	924966912,
+	925466624,
+	925966336,
+	926466048,
+	926965760,
+	927465472,
+
+	// last two determined by FrSkyR9_step
+	0,
+	0
+};
+
+static uint32_t FrSkyR9_freq_map_868[FREQ_MAP_SIZE] =
+{
+	859504640,
+	860004352,
+	860504064,
+	861003776,
+	861503488,
+	862003200,
+	862502912,
+	863002624,
+	863502336,
+	864002048,
+	864501760,
+	865001472,
+	865501184,
+	866000896,
+	866500608,
+	867000320,
+	867500032,
+	867999744,
+	868499456,
+	868999168,
+	869498880,
+	869998592,
+	870498304,
+	870998016,
+	871497728,
+	871997440,
+	872497152,
+
+	// last two determined by FrSkyR9_step
+	0,
+	0
+};
+
+static uint8_t FrSkyR9_step = 1;
+static uint32_t* FrSkyR9_freq_map = FrSkyR9_freq_map_915;
+
+uint16_t initFrSkyR9()
+{
+	set_rx_tx_addr(MProtocol_id_master);
+
+	if(sub_protocol & 0x01)
+		FrSkyR9_freq_map = FrSkyR9_freq_map_868;
+	else
+		FrSkyR9_freq_map = FrSkyR9_freq_map_915;
+
+	FrSkyR9_step = 1 + (random(0xfefefefe) % 24);
+    FrSkyR9_freq_map[27] = FrSkyR9_freq_map[FrSkyR9_step];
+	FrSkyR9_freq_map[28] = FrSkyR9_freq_map[FrSkyR9_step+1];
+
+	SX1276_SetMode(true, false, SX1276_OPMODE_SLEEP);
+	SX1276_SetMode(true, false, SX1276_OPMODE_STDBY);
+
+	// uint8_t buffer[2];
+	// buffer[0] = 0x00;
+	// buffer[1] = 0x00;
+	// SX1276_WriteRegisterMulti(SX1276_40_DIOMAPPING1, buffer, 2);
+
+	SX1276_SetDetectOptimize(true, SX1276_DETECT_OPTIMIZE_SF6);
+	SX1276_ConfigModem1(SX1276_MODEM_CONFIG1_BW_500KHZ, SX1276_MODEM_CONFIG1_CODING_RATE_4_5, true);
+	SX1276_ConfigModem2(6, false, false);
+	SX1276_ConfigModem3(false, false);
+	SX1276_SetPreambleLength(9);
+	SX1276_SetDetectionThreshold(SX1276_MODEM_DETECTION_THRESHOLD_SF6);
+	SX1276_SetLna(1, true);
+	SX1276_SetHopPeriod(0); // 0 = disabled, we hope frequencies manually
+	SX1276_SetPaDac(true);
+
+	hopping_frequency_no = 0;
+
+	// TODO this can probably be shorter
+	return 20000; // start calling FrSkyR9_callback in 20 milliseconds
+}
+
+uint16_t FrSkyR9_callback()
+{
+	SX1276_SetMode(true, false, SX1276_OPMODE_STDBY);
+
+	//SX1276_WriteReg(SX1276_11_IRQFLAGSMASK, 0xbf); // use only RxDone interrupt
+
+	// uint8_t buffer[2];
+	// buffer[0] = 0x00;
+	// buffer[1] = 0x00;
+	// SX1276_WriteRegisterMulti(SX1276_40_DIOMAPPING1, buffer, 2); // RxDone interrupt mapped to DIO0 (the rest are not used because of the REG_IRQ_FLAGS_MASK)
+
+	// SX1276_WriteReg(REG_PAYLOAD_LENGTH, 13);
+
+	// SX1276_WriteReg(REG_FIFO_ADDR_PTR, 0x00);
+
+	// SX1276_WriteReg(SX1276_01_OPMODE, 0x85); // RXCONTINUOUS
+	// delay(10); // 10 ms
+
+	// SX1276_WriteReg(SX1276_01_OPMODE, 0x81); // STDBY
+
+	//SX1276_WriteReg(SX1276_09_PACONFIG, 0xF0);
+
+	// max power: 15dBm (10.8 + 0.6 * MaxPower [dBm])
+	// output_power: 2 dBm (17-(15-OutputPower) (if pa_boost_pin == true))
+	SX1276_SetPaConfig(true, 7, 0);
+	SX1276_SetFrequency(FrSkyR9_freq_map[hopping_frequency_no]); // set current center frequency
+	
+	delayMicroseconds(500);
+
+	packet[0] = 0x3C; // ????
+	packet[1] = rx_tx_addr[3]; // unique radio id
+	packet[2] = rx_tx_addr[2]; // unique radio id
+	packet[3] = hopping_frequency_no; // current channel index
+	packet[4] = FrSkyR9_step; // step size and last 2 channels start index
+	packet[5] = RX_num; // receiver number from OpenTX
+
+	// binding mode: 0x00 regular / 0x41 bind?
+	if(IS_BIND_IN_PROGRESS)
+		packet[6] = 0x41; 
+	else
+		packet[6] = 0x00;
+
+	// TODO
+	packet[7] = 0x00; // fail safe related (looks like the same sequence of numbers as FrskyX protocol)
+
+	// two channel are spread over 3 bytes.
+	// each channel is 11 bit + 1 bit (msb) that states whether
+	// it's part of the upper channels (9-16) or lower (1-8) (0 - lower 1 - upper)
+
+	#define CH_POS 8
+	static uint8_t chan_start=0;
+	uint8_t chan_index = chan_start;
+
+	for(int i = 0; i < 12; i += 3)
+	{
+		// map channel values (0-2047) to (64-1984)
+		uint16_t ch1 = FrSkyX_scaleForPXX(chan_index);
+		uint16_t ch2 = FrSkyX_scaleForPXX(chan_index + 1);
+
+		packet[CH_POS + i] = ch1;
+		packet[CH_POS + i + 1] = (ch1 >> 8) | (ch2 << 4);
+		packet[CH_POS + i + 2] = (ch2 >> 4);
+
+		chan_index += 2;
+	}
+	
+	if((sub_protocol & 0x02) == 0)
+		chan_start ^= 0x08;		// Alternate between lower and upper when 16 channels is used
+	
+	packet[20] = 0x08; // ????
+	packet[21] = 0x00; // ????
+	packet[22] = 0x00; // ????
+	packet[23] = 0x00; // ????
+
+	uint16_t crc = FrSkyX_crc(packet, 24);
+
+	packet[24] = crc; // low byte
+	packet[25] = crc >> 8; // high byte
+
+	SX1276_WritePayloadToFifo(packet, 26);
+
+	hopping_frequency_no = (hopping_frequency_no + FrSkyR9_step) % FREQ_MAP_SIZE;
+
+	SX1276_SetMode(true, false, SX1276_OPMODE_TX);
+
+	// need to clear RegIrqFlags?
+
+    return 19400;
+}
+
+#endif

Multiprotocol/FrSkyV_cc2500.ino

@@ -117,6 +117,9 @@ uint16_t ReadFRSKYV()
 {
 	if(IS_BIND_DONE)
 	{	// Normal operation
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(9006);
+		#endif
 		uint8_t chan = FRSKYV_calc_channel();
 		CC2500_Strobe(CC2500_SIDLE);
 		if (option != prev_option)

Multiprotocol/FrSkyX_Rx_cc2500.ino

@@ -1,373 +0,0 @@
-/*
- This project is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- Multiprotocol is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#if defined(FRSKYX_RX_CC2500_INO)
-
-#include "iface_cc2500.h" 
-
- #define FRSKYX_FCC_LENGTH	(30+2)
- #define FRSKYX_LBT_LENGTH	(33+2)
-
- enum {
-	FRSKYX_RX_TUNE_START,
-	FRSKYX_RX_TUNE_LOW,
-	FRSKYX_RX_TUNE_HIGH,
-	FRSKYX_RX_BIND,
-	FRSKYX_RX_DATA,
- };
-
- static uint8_t frskyx_rx_chanskip;
- static uint8_t frskyx_rx_disable_lna;
- static uint8_t frskyx_rx_data_started;
- static int8_t  frskyx_rx_finetune;
-
-static void __attribute__((unused)) frskyx_rx_strobe_rx()
-{
-	 CC2500_Strobe(CC2500_SIDLE);
-	 CC2500_Strobe(CC2500_SFRX);
-	 CC2500_Strobe(CC2500_SRX);
-}
-
-static void __attribute__((unused)) FrSkyX_Rx_initialise() {
-	CC2500_Reset();
-	
-	CC2500_WriteReg(CC2500_02_IOCFG0, 0x01);
-	CC2500_WriteReg(CC2500_18_MCSM0, 0x18);
-	CC2500_WriteReg(CC2500_07_PKTCTRL1, 0x04);
-	CC2500_WriteReg(CC2500_3E_PATABLE, 0xFF);
-	CC2500_WriteReg(CC2500_0C_FSCTRL0, 0);
-	CC2500_WriteReg(CC2500_0D_FREQ2, 0x5C);
-	CC2500_WriteReg(CC2500_13_MDMCFG1, 0x23);
-	CC2500_WriteReg(CC2500_14_MDMCFG0, 0x7A);
-	CC2500_WriteReg(CC2500_19_FOCCFG, 0x16);
-	CC2500_WriteReg(CC2500_1A_BSCFG, 0x6C);
-	CC2500_WriteReg(CC2500_1B_AGCCTRL2, 0x03);
-	CC2500_WriteReg(CC2500_1C_AGCCTRL1, 0x40);
-	CC2500_WriteReg(CC2500_1D_AGCCTRL0, 0x91);
-	CC2500_WriteReg(CC2500_21_FREND1, 0x56);
-	CC2500_WriteReg(CC2500_22_FREND0, 0x10);
-	CC2500_WriteReg(CC2500_23_FSCAL3, 0xA9);
-	CC2500_WriteReg(CC2500_24_FSCAL2, 0x0A);
-	CC2500_WriteReg(CC2500_25_FSCAL1, 0x00);
-	CC2500_WriteReg(CC2500_26_FSCAL0, 0x11);
-	CC2500_WriteReg(CC2500_29_FSTEST, 0x59);
-	CC2500_WriteReg(CC2500_2C_TEST2, 0x88);
-	CC2500_WriteReg(CC2500_2D_TEST1, 0x31);
-	CC2500_WriteReg(CC2500_2E_TEST0, 0x0B);
-	CC2500_WriteReg(CC2500_03_FIFOTHR, 0x07);
-	CC2500_WriteReg(CC2500_09_ADDR, 0x00);
-
-	switch (sub_protocol) {
-	case FRSKYX_FCC:
-		CC2500_WriteReg(CC2500_17_MCSM1, 0x0C);
-		CC2500_WriteReg(CC2500_0E_FREQ1, 0x76);
-		CC2500_WriteReg(CC2500_0F_FREQ0, 0x27);
-		CC2500_WriteReg(CC2500_06_PKTLEN, 0x1E);
-		CC2500_WriteReg(CC2500_08_PKTCTRL0, 0x01);
-		CC2500_WriteReg(CC2500_0B_FSCTRL1, 0x0A);
-		CC2500_WriteReg(CC2500_10_MDMCFG4, 0x7B);
-		CC2500_WriteReg(CC2500_11_MDMCFG3, 0x61);
-		CC2500_WriteReg(CC2500_12_MDMCFG2, 0x13);
-		CC2500_WriteReg(CC2500_15_DEVIATN, 0x51);
-		break;
-	case FRSKYX_LBT:
-		CC2500_WriteReg(CC2500_17_MCSM1, 0x0E);
-		CC2500_WriteReg(CC2500_0E_FREQ1, 0x80);
-		CC2500_WriteReg(CC2500_0F_FREQ0, 0x00);
-		CC2500_WriteReg(CC2500_06_PKTLEN, 0x23);
-		CC2500_WriteReg(CC2500_08_PKTCTRL0, 0x01);
-		CC2500_WriteReg(CC2500_0B_FSCTRL1, 0x08);
-		CC2500_WriteReg(CC2500_10_MDMCFG4, 0x7B);
-		CC2500_WriteReg(CC2500_11_MDMCFG3, 0xF8);
-		CC2500_WriteReg(CC2500_12_MDMCFG2, 0x03);
-		CC2500_WriteReg(CC2500_15_DEVIATN, 0x53);
-		break;
-	}
-
-	frskyx_rx_disable_lna = IS_POWER_FLAG_on;
-	CC2500_SetTxRxMode(frskyx_rx_disable_lna ? TXRX_OFF : RX_EN); // lna disable / enable
-
-	frskyx_rx_strobe_rx();
-	CC2500_WriteReg(CC2500_0A_CHANNR, 0);  // bind channel
-	delayMicroseconds(1000); // wait for RX to activate
-}
-
-static void __attribute__((unused)) frskyx_rx_set_channel(uint8_t channel)
-{
-	CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[channel]);
-	CC2500_WriteReg(CC2500_25_FSCAL1, calData[channel]);
-	frskyx_rx_strobe_rx();
-}
-
-static void __attribute__((unused)) frskyx_rx_calibrate()
-{
-	frskyx_rx_strobe_rx();
-	for (unsigned c = 0; c < 47; c++)
-	{
-		CC2500_Strobe(CC2500_SIDLE);
-		CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[c]);
-		CC2500_Strobe(CC2500_SCAL);
-		delayMicroseconds(900);
-		calData[c] = CC2500_ReadReg(CC2500_25_FSCAL1);
-	}
-}
-
-static uint8_t __attribute__((unused)) frskyx_rx_check_crc()
-{
-	uint8_t limit = packet_length - 4;
-	uint16_t lcrc = frskyX_crc_x(&packet[3], limit - 3); // computed crc
-	uint16_t rcrc = (packet[limit] << 8) | (packet[limit + 1] & 0xff); // received crc
-	return lcrc == rcrc;
-}
-
-static void __attribute__((unused)) frskyx_rx_build_telemetry_packet()
-{
-	static uint16_t frskyx_rx_rc_chan[16];
-	uint16_t pxx_channel[8];
-	uint32_t bits = 0;
-	uint8_t bitsavailable = 0;
-	uint8_t idx = 0;
-
-	// decode PXX channels
-	pxx_channel[0] = ((packet[10] << 8) & 0xF00) | packet[9];
-	pxx_channel[1] = ((packet[11] << 4) & 0xFF0) | (packet[10] >> 4);
-	pxx_channel[2] = ((packet[13] << 8) & 0xF00) | packet[12];
-	pxx_channel[3] = ((packet[14] << 4) & 0xFF0) | (packet[13] >> 4);
-	pxx_channel[4] = ((packet[16] << 8) & 0xF00) | packet[15];
-	pxx_channel[5] = ((packet[17] << 4) & 0xFF0) | (packet[16] >> 4);
-	pxx_channel[6] = ((packet[19] << 8) & 0xF00) | packet[18];
-	pxx_channel[7] = ((packet[20] << 4) & 0xFF0) | (packet[19] >> 4);
-	for (unsigned i = 0; i < 8; i++) {
-		uint8_t shifted = (pxx_channel[i] & 0x800)>0;
-		uint16_t channel_value = pxx_channel[i] & 0x7FF;
-		if (channel_value < 64)
-			frskyx_rx_rc_chan[shifted ? i + 8 : i] = 0;
-		else
-			frskyx_rx_rc_chan[shifted ? i + 8 : i] = min(((channel_value - 64) << 4) / 15, 2047);
-	}
-
-	// buid telemetry packet
-	pkt[idx++] = RX_LQI;
-	pkt[idx++] = RX_RSSI;
-	pkt[idx++] = 0;  // start channel
-	pkt[idx++] = 16; // number of channels in packet
-
-	// pack channels
-	for (int i = 0; i < 16; i++) {
-		bits |= frskyx_rx_rc_chan[i] << bitsavailable;
-		bitsavailable += 11;
-		while (bitsavailable >= 8) {
-			pkt[idx++] = bits & 0xff;
-			bits >>= 8;
-			bitsavailable -= 8;
-		}
-	}
-}
-
-uint16_t initFrSkyX_Rx()
-{
-	FrSkyX_Rx_initialise();
-	state = 0;
-	frskyx_rx_chanskip = 1;
-	hopping_frequency_no = 0;
-	frskyx_rx_data_started = 0;
-	frskyx_rx_finetune = 0;
-	telemetry_link = 0;
-	if (IS_BIND_IN_PROGRESS) {
-		phase = FRSKYX_RX_TUNE_START;
-	}
-	else {
-		uint16_t temp = FRSKYX_RX_EEPROM_OFFSET;
-		rx_tx_addr[0] = eeprom_read_byte((EE_ADDR)temp++);
-		rx_tx_addr[1] = eeprom_read_byte((EE_ADDR)temp++);
-		rx_tx_addr[2] = eeprom_read_byte((EE_ADDR)temp++);
-		frskyx_rx_finetune = eeprom_read_byte((EE_ADDR)temp++);
-		for(uint8_t ch = 0; ch < 47; ch++)
-			hopping_frequency[ch] = eeprom_read_byte((EE_ADDR)temp++);
-		frskyx_rx_calibrate();
-		CC2500_WriteReg(CC2500_18_MCSM0, 0x08); // FS_AUTOCAL = manual
-		CC2500_WriteReg(CC2500_09_ADDR, rx_tx_addr[0]); // set address
-		CC2500_WriteReg(CC2500_07_PKTCTRL1, 0x05); // check address
-		if (option == 0)
-			CC2500_WriteReg(CC2500_0C_FSCTRL0, frskyx_rx_finetune);
-		else
-			CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
-		frskyx_rx_set_channel(hopping_frequency_no);
-		phase = FRSKYX_RX_DATA;
-	}
-	packet_length = (sub_protocol == FRSKYX_LBT) ? FRSKYX_LBT_LENGTH : FRSKYX_FCC_LENGTH;
-	return 1000;
-}
-
-uint16_t FrSkyX_Rx_callback()
-{
-	static uint32_t pps_timer=0;
-	static uint8_t pps_counter=0;
-	static int8_t read_retry = 0;
-	static int8_t tune_low, tune_high;
-	uint8_t len, ch;
-
-	if ((prev_option != option) && (phase >= FRSKYX_RX_DATA)) {
-		if (option == 0)
-			CC2500_WriteReg(CC2500_0C_FSCTRL0, frskyx_rx_finetune);
-		else
-			CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
-		prev_option = option;
-	}
-
-	if (frskyx_rx_disable_lna != IS_POWER_FLAG_on) {
-		frskyx_rx_disable_lna = IS_POWER_FLAG_on;
-		CC2500_SetTxRxMode(frskyx_rx_disable_lna ? TXRX_OFF : RX_EN);
-	}
-
-	len = CC2500_ReadReg(CC2500_3B_RXBYTES | CC2500_READ_BURST) & 0x7F;
-
-	switch(phase) {
-	case FRSKYX_RX_TUNE_START:
-		if (len >= packet_length) {
-			CC2500_ReadData(packet, packet_length);
-			if(packet[1] == 0x03 && packet[2] == 0x01) {
-				if(frskyx_rx_check_crc()) {
-					frskyx_rx_finetune = -127;
-					CC2500_WriteReg(CC2500_0C_FSCTRL0, frskyx_rx_finetune);
-					phase = FRSKYX_RX_TUNE_LOW;
-					frskyx_rx_strobe_rx();
-					return 1000;
-				}
-			}
-		}
-		frskyx_rx_finetune += 10;
-		CC2500_WriteReg(CC2500_0C_FSCTRL0, frskyx_rx_finetune);
-		frskyx_rx_strobe_rx();
-		return 18000;
-
-	case FRSKYX_RX_TUNE_LOW:
-		if (len >= packet_length) {
-			CC2500_ReadData(packet, packet_length);
-			if (frskyx_rx_check_crc()) {
-				tune_low = frskyx_rx_finetune;
-				frskyx_rx_finetune = 127;
-				CC2500_WriteReg(CC2500_0C_FSCTRL0, frskyx_rx_finetune);
-				phase = FRSKYX_RX_TUNE_HIGH;
-				frskyx_rx_strobe_rx();
-				return 1000;
-			}
-		}
-		frskyx_rx_finetune += 1;
-		CC2500_WriteReg(CC2500_0C_FSCTRL0, frskyx_rx_finetune);
-		frskyx_rx_strobe_rx();
-		return 18000;
-
-	case FRSKYX_RX_TUNE_HIGH:
-		if (len >= packet_length) {
-			CC2500_ReadData(packet, packet_length);
-			if (frskyx_rx_check_crc()) {
-				tune_high = frskyx_rx_finetune;
-				frskyx_rx_finetune = (tune_low + tune_high) / 2;
-				CC2500_WriteReg(CC2500_0C_FSCTRL0, (int8_t)frskyx_rx_finetune);
-				if(tune_low < tune_high)
-					phase = FRSKYX_RX_BIND;
-				else
-					phase = FRSKYX_RX_TUNE_START;
-				frskyx_rx_strobe_rx();
-				return 1000;
-			}
-		}
-		frskyx_rx_finetune -= 1;
-		CC2500_WriteReg(CC2500_0C_FSCTRL0, frskyx_rx_finetune);
-		frskyx_rx_strobe_rx();
-		return 18000;
-
-	case FRSKYX_RX_BIND:
-		if(len >= packet_length) {
-			CC2500_ReadData(packet, packet_length);
-			if (frskyx_rx_check_crc()) {
-				if (packet[5] <= 0x2D) {
-					for (ch = 0; ch < 5; ch++)
-						hopping_frequency[packet[5]+ch] = packet[6+ch];
-					state |= 1 << (packet[5] / 5);
-				}
-			}
-			if (state == 0x3ff) {
-				debugln("bind complete");
-				frskyx_rx_calibrate();
-				rx_tx_addr[0] = packet[3];	// TXID
-				rx_tx_addr[1] = packet[4];	// TXID
-				rx_tx_addr[2] = packet[12]; // RX #
-				CC2500_WriteReg(CC2500_18_MCSM0, 0x08); // FS_AUTOCAL = manual
-				CC2500_WriteReg(CC2500_09_ADDR, rx_tx_addr[0]); // set address
-				CC2500_WriteReg(CC2500_07_PKTCTRL1, 0x05); // check address
-				phase = FRSKYX_RX_DATA;
-				frskyx_rx_set_channel(hopping_frequency_no);
-				// store txid and channel list
-				uint16_t temp = FRSKYX_RX_EEPROM_OFFSET;
-				eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[0]);
-				eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[1]);
-				eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[2]);
-				eeprom_write_byte((EE_ADDR)temp++, frskyx_rx_finetune);
-				for (ch = 0; ch < 47; ch++)
-					eeprom_write_byte((EE_ADDR)temp++, hopping_frequency[ch]);
-				BIND_DONE;
-			}
-			frskyx_rx_strobe_rx();
-		}
-		return 1000;
-
-	case FRSKYX_RX_DATA:
-		if (len >= packet_length) {
-			CC2500_ReadData(packet, packet_length);
-			if (packet[1] == rx_tx_addr[0] && packet[2] == rx_tx_addr[1] && packet[6] == rx_tx_addr[2] && frskyx_rx_check_crc()) {
-				RX_RSSI = packet[packet_length-2];
-				if(RX_RSSI >= 128)
-					RX_RSSI -= 128;
-				else
-					RX_RSSI += 128;
-				// hop to next channel
-				frskyx_rx_chanskip = ((packet[4] & 0xC0) >> 6) | ((packet[5] & 0x3F) << 2);
-				hopping_frequency_no = (hopping_frequency_no + frskyx_rx_chanskip) % 47;
-				frskyx_rx_set_channel(hopping_frequency_no);
-				if(packet[7] == 0 && telemetry_link == 0) { // standard packet, send channels to TX
-						frskyx_rx_build_telemetry_packet();
-						telemetry_link = 1;
-				}
-				frskyx_rx_data_started = 1;
-				read_retry = 0;
-				pps_counter++;
-			}
-		}
-		
-		// packets per second
-		if (millis() - pps_timer >= 1000) {
-			pps_timer = millis();
-			debugln("%d pps", pps_counter);
-			RX_LQI = pps_counter;
-			pps_counter = 0;
-		}
-
-		// skip channel if no packet received in time
-		if (read_retry++ >= 9) {
-			hopping_frequency_no = (hopping_frequency_no + frskyx_rx_chanskip) % 47;
-			frskyx_rx_set_channel(hopping_frequency_no);
-			if(frskyx_rx_data_started)
-				read_retry = 0;
-			else
-				read_retry = -50; // retry longer until first packet is catched
-		}
-		break;
-	}
-	return 1000;
-}
-
-#endif

Multiprotocol/FrSkyX_cc2500.ino

@@ -1,110 +1,87 @@
-/*  **************************
-	* By Midelic on RCGroups *
-	**************************
-	This project is free software: you can redistribute it and/or modify
-	it under the terms of the GNU General Public License as published by
-	the Free Software Foundation, either version 3 of the License, or
-	(at your option) any later version.
-	
-	Multiprotocol is distributed in the hope that it will be useful,
-	but WITHOUT ANY WARRANTY; without even the implied warranty of
-	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-	GNU General Public License for more details.
-	
-	You should have received a copy of the GNU General Public License
-	along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
-*/
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 #if defined(FRSKYX_CC2500_INO)
 
 #include "iface_cc2500.h"
 
-uint8_t FrX_chanskip;
-uint8_t FrX_send_seq ;
-uint8_t FrX_receive_seq ;
-
-#define FRX_FAILSAFE_TIMEOUT 1032
-
-static void __attribute__((unused)) frskyX_set_start(uint8_t ch )
+static void __attribute__((unused)) FrSkyX_build_bind_packet()
 {
-	CC2500_Strobe(CC2500_SIDLE);
-	CC2500_WriteReg(CC2500_25_FSCAL1, calData[ch]);
-	CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[ch]);
-}		
+	uint8_t packet_size = 0x1D;
+	if(protocol==PROTO_FRSKYX && (FrSkyFormat & 2 ))
+		packet_size=0x20;				// FrSkyX V1 LBT
+	//Header
+	packet[0] = packet_size;			// Number of bytes in the packet (after this one)
+	packet[1] = 0x03;					// Bind packet
+	packet[2] = 0x01;					// Bind packet
 
-static void __attribute__((unused)) frskyX_init()
-{
-	FRSKY_init_cc2500((sub_protocol&2)?FRSKYXEU_cc2500_conf:FRSKYX_cc2500_conf); // LBT or FCC
-	//
-	for(uint8_t c=0;c < 48;c++)
-	{//calibrate hop channels
-		CC2500_Strobe(CC2500_SIDLE);    
-		CC2500_WriteReg(CC2500_0A_CHANNR,hopping_frequency[c]);
-		CC2500_Strobe(CC2500_SCAL);
-		delayMicroseconds(900);//
-		calData[c] = CC2500_ReadReg(CC2500_25_FSCAL1);
+	//ID
+	packet[3] = rx_tx_addr[3];			// ID
+	packet[4] = rx_tx_addr[2];			// ID
+
+	if(protocol==PROTO_FRSKYX)
+	{
+		int idx = ((state -FRSKY_BIND) % 10) * 5;
+		packet[5] = idx;
+		packet[6] = hopping_frequency[idx++];
+		packet[7] = hopping_frequency[idx++];
+		packet[8] = hopping_frequency[idx++];
+		packet[9] = hopping_frequency[idx++];
+		packet[10] = hopping_frequency[idx++];
+		packet[11] = rx_tx_addr[1];		// Unknown but constant ID?
+		packet[12] = RX_num;
+		//
+		memset(&packet[13], 0, packet_size - 14);
+		if(binding_idx&0x01)
+			memcpy(&packet[13],(void *)"\x55\xAA\x5A\xA5",4);	// Telem off
+		if(binding_idx&0x02)
+			memcpy(&packet[17],(void *)"\x55\xAA\x5A\xA5",4);	// CH9-16
 	}
-	//#######END INIT########		
+	else
+	{
+		//packet 1D 03 01 0E 1C 02 00 00 32 0B 00 00 A8 26 28 01 A1 00 00 00 3E F6 87 C7 00 00 00 00 C9 C9
+		packet[5] = rx_tx_addr[1];		// Unknown but constant ID?
+		packet[6] = RX_num;
+		//Bind flags
+		packet[7]=0;
+		if(binding_idx&0x01)
+			packet[7] |= 0x40;				// Telem off
+		if(binding_idx&0x02)
+			packet[7] |= 0x80;				// CH9-16
+		//Unknown bytes
+		memcpy(&packet[8],"\x32\x0B\x00\x00\xA8\x26\x28\x01\xA1\x00\x00\x00\x3E\xF6\x87\xC7",16);
+		packet[20]^= 0x0E ^ rx_tx_addr[3];	// Update the ID
+		packet[21]^= 0x1C ^ rx_tx_addr[2];	// Update the ID
+		//Xor
+		for(uint8_t i=3; i<packet_size-1; i++)
+			packet[i] ^= 0xA7;
+	}
+	//CRC
+	uint16_t lcrc = FrSkyX_crc(&packet[3], packet_size-4);
+	packet[packet_size-1] = lcrc >> 8;
+	packet[packet_size] = lcrc;
+
+	/*//Debug
+	debug("Bind:");
+	for(uint8_t i=0;i<=packet_size;i++)
+		debug(" %02X",packet[i]);
+	debugln("");*/
 }
 
-static void __attribute__((unused)) frskyX_initialize_data(uint8_t adr)
-{
-	CC2500_WriteReg(CC2500_0C_FSCTRL0,option);	// Frequency offset hack 
-	CC2500_WriteReg(CC2500_18_MCSM0,    0x8);	
-	CC2500_WriteReg(CC2500_09_ADDR, adr ? 0x03 : rx_tx_addr[3]);
-	CC2500_WriteReg(CC2500_07_PKTCTRL1,0x05);
-}
-
-static void __attribute__((unused)) frskyX_build_bind_packet()
-{
-	packet[0] = (sub_protocol & 2 ) ? 0x20 : 0x1D ; // LBT or FCC
-	packet[1] = 0x03;
-	packet[2] = 0x01;
-	//
-	packet[3] = rx_tx_addr[3];
-	packet[4] = rx_tx_addr[2];
-	int idx = ((state -FRSKY_BIND) % 10) * 5;
-	packet[5] = idx;
-	packet[6] = hopping_frequency[idx++];
-	packet[7] = hopping_frequency[idx++];
-	packet[8] = hopping_frequency[idx++];
-	packet[9] = hopping_frequency[idx++];
-	packet[10] = hopping_frequency[idx++];
-	packet[11] = 0x02;
-	packet[12] = RX_num;
-	//
-	uint8_t limit = (sub_protocol & 2 ) ? 31 : 28 ;
-	memset(&packet[13], 0, limit - 13);
-	uint16_t lcrc = frskyX_crc_x(&packet[3], limit-3);
-	//
-	packet[limit++] = lcrc >> 8;
-	packet[limit] = lcrc;
-	//
-}
-
-// 0-2047, 0 = 817, 1024 = 1500, 2047 = 2182
-//64=860,1024=1500,1984=2140//Taranis 125%
-static uint16_t  __attribute__((unused)) frskyX_scaleForPXX( uint8_t i )
-{	//mapped 860,2140(125%) range to 64,1984(PXX values);
-	uint16_t chan_val=convert_channel_frsky(i)-1226;
-	if(i>7) chan_val|=2048;   // upper channels offset
-	return chan_val;
-}
-#ifdef FAILSAFE_ENABLE
-static uint16_t  __attribute__((unused)) frskyX_scaleForPXX_FS( uint8_t i )
-{	//mapped 1,2046(125%) range to 64,1984(PXX values);
-	uint16_t chan_val=((Failsafe_data[i]*15)>>4)+64;
-	if(Failsafe_data[i]==FAILSAFE_CHANNEL_NOPULSES)
-		chan_val=FAILSAFE_CHANNEL_NOPULSES;
-	else if(Failsafe_data[i]==FAILSAFE_CHANNEL_HOLD)
-		chan_val=FAILSAFE_CHANNEL_HOLD;
-	if(i>7) chan_val|=2048;   // upper channels offset
-	return chan_val;
-}
-#endif
-
-#define FRX_FAILSAFE_TIME 1032
-static void __attribute__((unused)) frskyX_data_frame()
+#define FrSkyX_FAILSAFE_TIME 1032
+static void __attribute__((unused)) FrSkyX_build_packet()
 {
 	//0x1D 0xB3 0xFD 0x02 0x56 0x07 0x15 0x00 0x00 0x00 0x04 0x40 0x00 0x04 0x40 0x00 0x04 0x40 0x00 0x04 0x40 0x08 0x00 0x00 0x00 0x00 0x00 0x00 0x96 0x12
 	//
@@ -116,29 +93,34 @@ static void __attribute__((unused)) frskyX_data_frame()
 	#ifdef FAILSAFE_ENABLE
 		static uint16_t failsafe_count=0;
 		static uint8_t FS_flag=0,failsafe_chan=0;
-		if (FS_flag == 0  &&  failsafe_count > FRX_FAILSAFE_TIME  &&  chan_offset == 0  &&  IS_FAILSAFE_VALUES_on)
+		if (FS_flag == 0  &&  failsafe_count > FrSkyX_FAILSAFE_TIME  &&  chan_offset == 0  &&  IS_FAILSAFE_VALUES_on)
 		{
 			FS_flag = 0x10;
 			failsafe_chan = 0;
-		} else if (FS_flag & 0x10 && failsafe_chan < (sub_protocol & 0x01 ? 8-1:16-1))
+		} else if (FS_flag & 0x10 && failsafe_chan < (FrSkyFormat & 0x01 ? 8-1:16-1))
 		{
-			FS_flag = 0x10 | ((FS_flag + 2) & 0x0F);	//10, 12, 14, 16, 18, 1A, 1C, 1E - failsafe packet
+			FS_flag = 0x10 | ((FS_flag + 2) & 0x0F);					//10, 12, 14, 16, 18, 1A, 1C, 1E - failsafe packet
 			failsafe_chan ++;
 		} else if (FS_flag & 0x10)
 		{
 			FS_flag = 0;
 			failsafe_count = 0;
+			FAILSAFE_VALUES_off;
 		}
 		failsafe_count++;
 	#endif
 	
-	packet[0] = (sub_protocol & 0x02 ) ? 0x20 : 0x1D ;	// LBT or FCC
-	packet[1] = rx_tx_addr[3];
-	packet[2] = rx_tx_addr[2];
-	packet[3] = 0x02;
+	uint8_t packet_size = 0x1D;
+	if(protocol==PROTO_FRSKYX && (FrSkyFormat & 2 ))
+		packet_size=0x20;				// FrSkyX V1 LBT
+	//Header
+	packet[0] = packet_size;			// Number of bytes in the packet (after this one)
+	packet[1] = rx_tx_addr[3];			// ID
+	packet[2] = rx_tx_addr[2];			// ID
+	packet[3] = rx_tx_addr[1];			// Unknown but constant ID?
 	//  
-	packet[4] = (FrX_chanskip<<6)|hopping_frequency_no; 
-	packet[5] = FrX_chanskip>>2;
+	packet[4] = (FrSkyX_chanskip<<6)|hopping_frequency_no; 
+	packet[5] = FrSkyX_chanskip>>2;
 	packet[6] = RX_num;
 	//packet[7] = FLAGS 00 - standard packet
 	//10, 12, 14, 16, 18, 1A, 1C, 1E - failsafe packet
@@ -150,66 +132,124 @@ static void __attribute__((unused)) frskyX_data_frame()
 	#endif
 	packet[8] = 0;		
 	//
-	uint8_t startChan = chan_offset;	for(uint8_t i = 0; i <12 ; i+=3)
+	uint8_t startChan = chan_offset;
+	for(uint8_t i = 0; i <12 ; i+=3)
 	{//12 bytes of channel data
 		#ifdef FAILSAFE_ENABLE
 			if( (FS_flag & 0x10) && ((failsafe_chan & 0x07) == (startChan & 0x07)) )
-				chan_0 = frskyX_scaleForPXX_FS(failsafe_chan);
+				chan_0 = FrSkyX_scaleForPXX_FS(failsafe_chan);
 			else
 		#endif
-				chan_0 = frskyX_scaleForPXX(startChan);
+				chan_0 = FrSkyX_scaleForPXX(startChan);
 		startChan++;
 		//
 		#ifdef FAILSAFE_ENABLE
 			if( (FS_flag & 0x10) && ((failsafe_chan & 0x07) == (startChan & 0x07)) )
-				chan_1 = frskyX_scaleForPXX_FS(failsafe_chan);
+				chan_1 = FrSkyX_scaleForPXX_FS(failsafe_chan);
 			else
 		#endif
-				chan_1 = frskyX_scaleForPXX(startChan);
+				chan_1 = FrSkyX_scaleForPXX(startChan);
 		startChan++;
 		//
-		packet[9+i] = lowByte(chan_0);	//3 bytes*4
+		packet[9+i] = lowByte(chan_0);									//3 bytes*4
 		packet[9+i+1]=(((chan_0>>8) & 0x0F)|(chan_1 << 4));
 		packet[9+i+2]=chan_1>>4;
 	}
-	packet[21] = (FrX_receive_seq << 4) | FrX_send_seq ;//8 at start
-	
-	if(sub_protocol & 0x01 )			// in X8 mode send only 8ch every 9ms
+	if(FrSkyFormat & 0x01 )											//In X8 mode send only 8ch every 9ms
 		chan_offset = 0 ;
 	else
 		chan_offset^=0x08;
 	
-	uint8_t limit = (sub_protocol & 2 ) ? 31 : 28 ;
-	for (uint8_t i=22;i<limit;i++)
+	//sequence and send SPort
+	for (uint8_t i=22;i<packet_size-1;i++)
 		packet[i]=0;
-	#if defined SPORT_POLLING
-		uint8_t idxs=0;
-		if(ok_to_send)
-			for (uint8_t i=23;i<limit;i++)
-			{//
-				if(sport_index==sport_idx)
-				{//no new data
-					ok_to_send=false;
-					break;
-				}
-				packet[i]=SportData[sport_index];	
-				sport_index= (sport_index+1)& (MAX_SPORT_BUFFER-1);
-				idxs++;
+	packet[21] = FrSkyX_RX_Seq << 4;									//TX=8 at startup
+	#ifdef SPORT_SEND
+		if (FrSkyX_TX_IN_Seq!=0xFF)
+		{//RX has replied at least once
+			if (FrSkyX_TX_IN_Seq & 0x08)
+			{//Request init
+				//debugln("Init");
+				FrSkyX_TX_Seq = 0 ;	
+				for(uint8_t i=0;i<4;i++)
+					FrSkyX_TX_Frames[i].count=0;						//Discard frames in current output buffer
 			}
-		packet[22]= idxs;
-		#ifdef DEBUG_SERIAL
-			for(uint8_t i=0;i<idxs;i++)
+			else if (FrSkyX_TX_IN_Seq & 0x04)
+			{//Retransmit the requested packet
+				debugln("Retry:%d",FrSkyX_TX_IN_Seq&0x03);
+				packet[21] |= FrSkyX_TX_IN_Seq&0x03;
+				packet[22]  = FrSkyX_TX_Frames[FrSkyX_TX_IN_Seq&0x03].count;
+				for (uint8_t i=23;i<23+FrSkyX_TX_Frames[FrSkyX_TX_IN_Seq&0x03].count;i++)
+					packet[i] = FrSkyX_TX_Frames[FrSkyX_TX_IN_Seq&0x03].payload[i];
+			}
+			else if ( FrSkyX_TX_Seq != 0x08 )
 			{
-				Serial.print(packet[23+i],HEX);
-				Serial.print(" ");	
-			}		
-			Serial.println(" ");
-		#endif
-	#endif // SPORT_POLLING
+				if(FrSkyX_TX_Seq==FrSkyX_TX_IN_Seq)
+				{//Send packet from the incoming radio buffer
+					//debugln("Send:%d",FrSkyX_TX_Seq);
+					packet[21] |= FrSkyX_TX_Seq;
+					uint8_t nbr_bytes=0;
+					for (uint8_t i=23;i<packet_size-1;i++)
+					{
+						if(SportHead==SportTail)
+							break; //buffer empty
+						packet[i]=SportData[SportHead];
+						FrSkyX_TX_Frames[FrSkyX_TX_Seq].payload[i-23]=SportData[SportHead];
+						SportHead=(SportHead+1) & (MAX_SPORT_BUFFER-1);
+						nbr_bytes++;
+					}
+					packet[22]=nbr_bytes;
+					FrSkyX_TX_Frames[FrSkyX_TX_Seq].count=nbr_bytes;
+					if(nbr_bytes)
+					{//Check the buffer status
+						uint8_t used = SportTail;
+						if ( SportHead > SportTail )
+							used += MAX_SPORT_BUFFER - SportHead ;
+						else
+							used -= SportHead ;
+						if ( used < (MAX_SPORT_BUFFER>>1) )
+						{
+							DATA_BUFFER_LOW_off;
+							debugln("Ok buf:%d",used);
+						}
+					}
+					FrSkyX_TX_Seq = ( FrSkyX_TX_Seq + 1 ) & 0x03 ;		//Next iteration send next packet
+				}
+				else
+				{//Not in sequence somehow, transmit what the receiver wants but why not asking for retransmit...
+					//debugln("RX_Seq:%d,TX:%d",FrSkyX_TX_IN_Seq,FrSkyX_TX_Seq);
+					packet[21] |= FrSkyX_TX_IN_Seq;
+					packet[22] = FrSkyX_TX_Frames[FrSkyX_TX_IN_Seq].count;
+					for (uint8_t i=23;i<23+FrSkyX_TX_Frames[FrSkyX_TX_IN_Seq].count;i++)
+						packet[i] = FrSkyX_TX_Frames[FrSkyX_TX_IN_Seq].payload[i-23];
+				}
+			}
+			else
+				packet[21] |= 0x08 ;									//FrSkyX_TX_Seq=8 at startup
+		}
+		if(packet[22])
+		{//Debug
+			debug("SP: ");
+			for(uint8_t i=0;i<packet[22];i++)
+				debug("%02X ",packet[23+i]);
+			debugln("");
+		}
+	#else
+		packet[21] |= FrSkyX_TX_Seq ;//TX=8 at startup
+		if ( !(FrSkyX_TX_IN_Seq & 0xF8) )
+			FrSkyX_TX_Seq = ( FrSkyX_TX_Seq + 1 ) & 0x03 ;				// Next iteration send next packet
+	#endif // SPORT_SEND
 
-	uint16_t lcrc = frskyX_crc_x(&packet[3], limit-3);
-	packet[limit++]=lcrc>>8;//high byte
-	packet[limit]=lcrc;//low byte
+	//CRC
+	uint16_t lcrc = FrSkyX_crc(&packet[3], packet_size-4);
+	packet[packet_size-1] = lcrc >> 8;
+	packet[packet_size] = lcrc;
+
+	/*//Debug
+	debug("Norm:");
+	for(uint8_t i=0;i<=packet_size;i++)
+		debug(" %02X",packet[i]);
+	debugln("");*/
 }
 
 uint16_t ReadFrSkyX()
@@ -217,11 +257,11 @@ uint16_t ReadFrSkyX()
 	switch(state)
 	{	
 		default: 
-			frskyX_set_start(47);		
+			FrSkyX_set_start(47);		
 			CC2500_SetPower();
 			CC2500_Strobe(CC2500_SFRX);
 			//		
-			frskyX_build_bind_packet();
+			FrSkyX_build_bind_packet();
 			CC2500_Strobe(CC2500_SIDLE);
 			CC2500_WriteData(packet, packet[0]+1);
 			if(IS_BIND_DONE)
@@ -230,73 +270,112 @@ uint16_t ReadFrSkyX()
 				state++;
 			return 9000;
 		case FRSKY_BIND_DONE:
-			frskyX_initialize_data(0);
+			FrSkyX_initialize_data(0);
 			hopping_frequency_no=0;
 			BIND_DONE;
-			state++;			
-			break;		
+			state++;													//FRSKY_DATA1
+			break;
+
 		case FRSKY_DATA1:
+			CC2500_Strobe(CC2500_SIDLE);
 			if ( prev_option != option )
 			{
-				CC2500_WriteReg(CC2500_0C_FSCTRL0,option);	// Frequency offset hack 
+				CC2500_WriteReg(CC2500_0C_FSCTRL0,option);				//Frequency offset hack 
 				prev_option = option ;
 			}
-			CC2500_SetTxRxMode(TX_EN);
-			frskyX_set_start(hopping_frequency_no);
-			CC2500_SetPower();		
-			CC2500_Strobe(CC2500_SFRX);
-			hopping_frequency_no = (hopping_frequency_no+FrX_chanskip)%47;
-			CC2500_Strobe(CC2500_SIDLE);		
-			CC2500_WriteData(packet, packet[0]+1);
-			//
-//			frskyX_data_frame();
-			state++;
-			return 5200;
+			FrSkyX_set_start(hopping_frequency_no);
+			FrSkyX_build_packet();
+			if(FrSkyFormat & 2)
+			{// LBT
+				CC2500_Strobe(CC2500_SRX);								//Acquire RSSI
+				state++;
+				return 400;		// LBT v2.1
+			}
 		case FRSKY_DATA2:
-			CC2500_SetTxRxMode(RX_EN);
+			if(FrSkyFormat & 2)
+			{
+				uint16_t rssi=0;
+				for(uint8_t i=0;i<4;i++)
+					rssi += CC2500_ReadReg(CC2500_34_RSSI | CC2500_READ_BURST);	// 0.5 db/count, RSSI value read from the RSSI status register is a 2's complement number
+				rssi>>=2;
+				#if 0
+					uint8_t rssi_level=convert_channel_8b(CH16)>>1;		//CH16 0..127
+					if ( rssi > rssi_level && rssi < 128)				//test rssi level dynamically
+				#else
+					if ( rssi > 72 && rssi < 128)						//LBT and RSSI between -36 and -8.5 dBm
+				#endif
+				{
+					POWER_FLAG_off;										// Reduce to low power before transmitting
+					debugln("Busy %d %d",hopping_frequency_no,rssi);
+				}
+			}
 			CC2500_Strobe(CC2500_SIDLE);
-			state++;
-			return 200;
-		case FRSKY_DATA3:		
+			CC2500_Strobe(CC2500_SFTX);
+			CC2500_SetTxRxMode(TX_EN);
+			CC2500_SetPower();
+			hopping_frequency_no = (hopping_frequency_no+FrSkyX_chanskip)%47;
+			CC2500_WriteData(packet, packet[0]+1);
+			state=FRSKY_DATA3;
+			if(FrSkyFormat & 2)
+				return 4000;	// LBT v2.1
+			else
+				return 5200;	// FCC v2.1
+		case FRSKY_DATA3:
+			CC2500_Strobe(CC2500_SIDLE);
+			CC2500_SetTxRxMode(RX_EN);
 			CC2500_Strobe(CC2500_SRX);
 			state++;
-			return 3100;
-		case FRSKY_DATA4:
+			if(FrSkyFormat & 2)
+				return 4100;	// LBT v2.1
+			else
+				return 3300;	// FCC v2.1
+	case FRSKY_DATA4:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(9000);
+			#endif
+			#if defined TELEMETRY
+				telemetry_link=1;										//Send telemetry out anyway
+			#endif
 			len = CC2500_ReadReg(CC2500_3B_RXBYTES | CC2500_READ_BURST) & 0x7F;	
-			if (len && (len<=(0x0E + 3)))				//Telemetry frame is 17
+			if (len && (len<=(0x0E + 3)))								//Telemetry frame is 17
 			{
+				//debug("Telem:");
 				packet_count=0;
-				CC2500_ReadData(pkt, len);
+				CC2500_ReadData(packet_in, len);
 				#if defined TELEMETRY
-					frsky_check_telemetry(pkt,len);	//check if valid telemetry packets
-					//parse telemetry packets here
-					//The same telemetry function used by FrSky(D8).
+					if(protocol==PROTO_FRSKYX || (protocol==PROTO_FRSKYX2 && (packet_in[len-1] & 0x80)) )
+					{//with valid crc for FRSKYX2
+						//Debug
+						//for(uint8_t i=0;i<len;i++)
+						//	debug(" %02X",packet_in[i]);
+						frsky_check_telemetry(packet_in,len);			//Check and parse telemetry packets
+					}
 				#endif
-			} 
+				//debugln("");
+			}
 			else
 			{
 				packet_count++;
+				//debugln("M %d",packet_count);
 				// restart sequence on missed packet - might need count or timeout instead of one missed
 				if(packet_count>100)
 				{//~1sec
-//					seq_last_sent = 0;
-//					seq_last_rcvd = 8;
-					FrX_send_seq = 0x08 ;
-//					FrX_receive_seq = 0 ;
+					FrSkyX_TX_Seq = 0x08 ;								//Request init
+					FrSkyX_TX_IN_Seq = 0xFF ;							//No sequence received yet
+					#ifdef SPORT_SEND
+						for(uint8_t i=0;i<4;i++)
+							FrSkyX_TX_Frames[i].count=0;				//Discard frames in current output buffer
+					#endif
 					packet_count=0;
 					#if defined TELEMETRY
 						telemetry_lost=1;
+						telemetry_link=0;								//Stop sending telemetry
 					#endif
 				}
-				CC2500_Strobe(CC2500_SFRX);			//flush the RXFIFO
-			}
-			frskyX_data_frame();
-			if ( FrX_send_seq != 0x08 )
-			{
-				FrX_send_seq = ( FrX_send_seq + 1 ) & 0x03 ;
+				CC2500_Strobe(CC2500_SFRX);								//Flush the RXFIFO
 			}
 			state = FRSKY_DATA1;
-			return 500;
+			return 500;	// FCC & LBT v2.1
 	}		
 	return 1;		
 }
@@ -304,36 +383,51 @@ uint16_t ReadFrSkyX()
 uint16_t initFrSkyX()
 {
 	set_rx_tx_addr(MProtocol_id_master);
-	Frsky_init_hop();
+	FrSkyFormat = sub_protocol;
+	
+	if (sub_protocol==XCLONE)
+		Frsky_init_clone();
+	else if(protocol==PROTO_FRSKYX)
+	{
+		Frsky_init_hop();
+		rx_tx_addr[1]=0x02;		// ID related, hw version?
+	}
+	else
+	{
+		#ifdef FRSKYX2_FORCE_ID
+			rx_tx_addr[3]=0x0E;
+			rx_tx_addr[2]=0x1C;
+			FrSkyX_chanskip=18;
+		#endif
+		rx_tx_addr[1]=0x02;		// ID related, hw version?
+		FrSkyX2_init_hop();
+	}
+	
 	packet_count=0;
-	while(!FrX_chanskip)
-		FrX_chanskip=random(0xfefefefe)%47;
+	while(!FrSkyX_chanskip)
+		FrSkyX_chanskip=random(0xfefefefe)%47;
+
+	FrSkyX_init();
 
-	//for test***************
-	//rx_tx_addr[3]=0xB3;
-	//rx_tx_addr[2]=0xFD;
-	//************************
-	frskyX_init();
-#if defined  SPORT_POLLING
-#ifdef INVERT_SERIAL
-	start_timer4() ;
-#endif
-#endif
-	//
 	if(IS_BIND_IN_PROGRESS)
 	{	   
 		state = FRSKY_BIND;
-		frskyX_initialize_data(1);
+		FrSkyX_initialize_data(1);
 	}
 	else
 	{
 		state = FRSKY_DATA1;
-		frskyX_initialize_data(0);
+		FrSkyX_initialize_data(0);
 	}
-//	seq_last_sent = 0;
-//	seq_last_rcvd = 8;
-	FrX_send_seq = 0x08 ;
-	FrX_receive_seq = 0 ;
+	FrSkyX_TX_Seq = 0x08 ;					// Request init
+	FrSkyX_TX_IN_Seq = 0xFF ;				// No sequence received yet
+	#ifdef SPORT_SEND
+		for(uint8_t i=0;i<4;i++)
+			FrSkyX_TX_Frames[i].count=0;	// discard frames in current output buffer
+		SportHead=SportTail=0;				// empty data buffer
+	#endif
+	FrSkyX_RX_Seq = 0 ;						// Seq 0 to start with
+	binding_idx=0;							// CH1-8 and Telem on
 	return 10000;
 }	
-#endif
+#endif

Multiprotocol/FrSky_Rx_cc2500.ino

@@ -0,0 +1,593 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if defined(FRSKY_RX_CC2500_INO)
+
+#include "iface_cc2500.h" 
+
+ #define FRSKY_RX_D16FCC_LENGTH	0x1D+1
+ #define FRSKY_RX_D16LBT_LENGTH	0x20+1
+ #define FRSKY_RX_D16v2_LENGTH	0x1D+1
+ #define FRSKY_RX_D8_LENGTH		0x11+1
+ #define FRSKY_RX_FORMATS		5
+
+enum
+{
+	FRSKY_RX_D8			=0,
+	FRSKY_RX_D16FCC		=1,
+	FRSKY_RX_D16LBT		=2,
+	FRSKY_RX_D16v2FCC	=3,
+	FRSKY_RX_D16v2LBT	=4,
+};
+
+enum {
+	FRSKY_RX_TUNE_START,
+	FRSKY_RX_TUNE_LOW,
+	FRSKY_RX_TUNE_HIGH,
+	FRSKY_RX_BIND,
+	FRSKY_RX_DATA,
+};
+
+const PROGMEM uint8_t frsky_rx_common_reg[][2] = {
+	{CC2500_02_IOCFG0, 0x01},
+	{CC2500_18_MCSM0, 0x18},
+	{CC2500_07_PKTCTRL1, 0x05},
+	{CC2500_3E_PATABLE, 0xFF},
+	{CC2500_0C_FSCTRL0, 0},
+	{CC2500_0D_FREQ2, 0x5C},
+	{CC2500_13_MDMCFG1, 0x23},
+	{CC2500_14_MDMCFG0, 0x7A},
+	{CC2500_19_FOCCFG, 0x16},
+	{CC2500_1A_BSCFG, 0x6C},
+	{CC2500_1B_AGCCTRL2, 0x03},
+	{CC2500_1C_AGCCTRL1, 0x40},
+	{CC2500_1D_AGCCTRL0, 0x91},
+	{CC2500_21_FREND1, 0x56},
+	{CC2500_22_FREND0, 0x10},
+	{CC2500_23_FSCAL3, 0xA9},
+	{CC2500_24_FSCAL2, 0x0A},
+	{CC2500_25_FSCAL1, 0x00},
+	{CC2500_26_FSCAL0, 0x11},
+	{CC2500_29_FSTEST, 0x59},
+	{CC2500_2C_TEST2, 0x88},
+	{CC2500_2D_TEST1, 0x31},
+	{CC2500_2E_TEST0, 0x0B},
+	{CC2500_03_FIFOTHR, 0x07},
+	{CC2500_09_ADDR, 0x03},
+};
+
+const PROGMEM uint8_t frsky_rx_d16fcc_reg[][2] = {
+	{CC2500_17_MCSM1, 0x0C},
+	{CC2500_0E_FREQ1, 0x76},
+	{CC2500_0F_FREQ0, 0x27},
+	{CC2500_06_PKTLEN, 0x1E},
+	{CC2500_08_PKTCTRL0, 0x01},
+	{CC2500_0B_FSCTRL1, 0x0A},
+	{CC2500_10_MDMCFG4, 0x7B},
+	{CC2500_11_MDMCFG3, 0x61},
+	{CC2500_12_MDMCFG2, 0x13},
+	{CC2500_15_DEVIATN, 0x51},
+};
+
+const PROGMEM uint8_t frsky_rx_d16lbt_reg[][2] = {
+	{CC2500_17_MCSM1, 0x0E},
+	{CC2500_0E_FREQ1, 0x80},
+	{CC2500_0F_FREQ0, 0x00},
+	{CC2500_06_PKTLEN, 0x23},
+	{CC2500_08_PKTCTRL0, 0x01},
+	{CC2500_0B_FSCTRL1, 0x08},
+	{CC2500_10_MDMCFG4, 0x7B},
+	{CC2500_11_MDMCFG3, 0xF8},
+	{CC2500_12_MDMCFG2, 0x03},
+	{CC2500_15_DEVIATN, 0x53},
+};
+
+const PROGMEM uint8_t frsky_rx_d8_reg[][2] = {
+	{CC2500_17_MCSM1,    0x0C},
+	{CC2500_0E_FREQ1,    0x76},
+	{CC2500_0F_FREQ0,    0x27},
+	{CC2500_06_PKTLEN,   0x19},
+	{CC2500_08_PKTCTRL0, 0x05},
+	{CC2500_0B_FSCTRL1,  0x08},
+	{CC2500_10_MDMCFG4,  0xAA},
+	{CC2500_11_MDMCFG3,  0x39},
+	{CC2500_12_MDMCFG2,  0x11},
+	{CC2500_15_DEVIATN,  0x42},
+};
+
+static uint8_t frsky_rx_chanskip;
+static int8_t  frsky_rx_finetune;
+static uint8_t frsky_rx_format;
+
+static void __attribute__((unused)) frsky_rx_strobe_rx()
+{
+	 CC2500_Strobe(CC2500_SIDLE);
+	 CC2500_Strobe(CC2500_SFRX);
+	 CC2500_Strobe(CC2500_SRX);
+}
+
+static void __attribute__((unused)) frsky_rx_initialise_cc2500() {
+	const uint8_t frsky_rx_length[] = { FRSKY_RX_D8_LENGTH, FRSKY_RX_D16FCC_LENGTH, FRSKY_RX_D16LBT_LENGTH, FRSKY_RX_D16v2_LENGTH, FRSKY_RX_D16v2_LENGTH };
+	packet_length = frsky_rx_length[frsky_rx_format];
+	CC2500_Reset();
+	CC2500_Strobe(CC2500_SIDLE);
+	for (uint8_t i = 0; i < sizeof(frsky_rx_common_reg) / 2; i++)
+		CC2500_WriteReg(pgm_read_byte_near(&frsky_rx_common_reg[i][0]), pgm_read_byte_near(&frsky_rx_common_reg[i][1]));
+
+	switch (frsky_rx_format)
+	{
+		case FRSKY_RX_D16v2FCC:
+		case FRSKY_RX_D16FCC:
+			for (uint8_t i = 0; i < sizeof(frsky_rx_d16fcc_reg) / 2; i++)
+				CC2500_WriteReg(pgm_read_byte_near(&frsky_rx_d16fcc_reg[i][0]), pgm_read_byte_near(&frsky_rx_d16fcc_reg[i][1]));
+			if(frsky_rx_format==FRSKY_RX_D16v2FCC)
+			{
+				CC2500_WriteReg(CC2500_08_PKTCTRL0, 0x05);	// Enable CRC
+				CC2500_WriteReg(CC2500_17_MCSM1, 0x0E);		// Go/Stay in RX mode
+				CC2500_WriteReg(CC2500_11_MDMCFG3, 0x84);	// bitrate 70K->77K
+			}
+			break;
+		case FRSKY_RX_D16v2LBT:
+		case FRSKY_RX_D16LBT:
+			for (uint8_t i = 0; i < sizeof(frsky_rx_d16lbt_reg) / 2; i++)
+				CC2500_WriteReg(pgm_read_byte_near(&frsky_rx_d16lbt_reg[i][0]), pgm_read_byte_near(&frsky_rx_d16lbt_reg[i][1]));
+			if(frsky_rx_format==FRSKY_RX_D16v2LBT)
+				CC2500_WriteReg(CC2500_08_PKTCTRL0, 0x05);	// Enable CRC
+			break;
+		case FRSKY_RX_D8:
+			for (uint8_t i = 0; i < sizeof(frsky_rx_d8_reg) / 2; i++)
+				CC2500_WriteReg(pgm_read_byte_near(&frsky_rx_d8_reg[i][0]), pgm_read_byte_near(&frsky_rx_d8_reg[i][1]));
+			CC2500_WriteReg(CC2500_23_FSCAL3, 0x89);
+			break;
+	}
+	CC2500_WriteReg(CC2500_0A_CHANNR, 0);  // bind channel
+	rx_disable_lna = IS_POWER_FLAG_on;
+	CC2500_SetTxRxMode(rx_disable_lna ? TXRX_OFF : RX_EN); // lna disable / enable
+	frsky_rx_strobe_rx();
+	delayMicroseconds(1000); // wait for RX to activate
+}
+
+static void __attribute__((unused)) frsky_rx_set_channel(uint8_t channel)
+{
+	CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[channel]);
+	if(frsky_rx_format == FRSKY_RX_D8)
+		CC2500_WriteReg(CC2500_23_FSCAL3, 0x89);
+	CC2500_WriteReg(CC2500_25_FSCAL1, calData[channel]);
+	frsky_rx_strobe_rx();
+}
+
+static void __attribute__((unused)) frsky_rx_calibrate()
+{
+	frsky_rx_strobe_rx();
+	for (unsigned c = 0; c < 47; c++)
+	{
+		CC2500_Strobe(CC2500_SIDLE);
+		CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[c]);
+		CC2500_Strobe(CC2500_SCAL);
+		delayMicroseconds(900);
+		calData[c] = CC2500_ReadReg(CC2500_25_FSCAL1);
+	}
+}
+
+static uint8_t __attribute__((unused)) frskyx_rx_check_crc_id(bool bind,bool init)
+{
+	/*debugln("RX");
+	for(uint8_t i=0; i<packet_length;i++)
+		debug(" %02X",packet[i]);
+	debugln("");*/
+	
+	if(bind && packet[0]!=packet_length-1 && packet[1] !=0x03 && packet[2] != 0x01)
+		return false;
+	uint8_t offset=bind?3:1;
+	
+	// Check D8 checksum
+	if (frsky_rx_format == FRSKY_RX_D8)
+	{
+		if((packet[packet_length+1] & 0x80) != 0x80)	// Check CRC_OK flag in status byte 2
+			return false; 								// Bad CRC
+		if(init)
+		{//Save TXID
+			rx_tx_addr[3] = packet[3];
+			rx_tx_addr[2] = packet[4];
+		}
+		else
+			if(rx_tx_addr[3] != packet[offset] || rx_tx_addr[2] != packet[offset+1])
+				return false;							// Bad address
+		return true;									// Full match
+	}
+
+	// Check D16v2 checksum
+	if (frsky_rx_format == FRSKY_RX_D16v2LBT || frsky_rx_format == FRSKY_RX_D16v2FCC)
+		if((packet[packet_length+1] & 0x80) != 0x80)	// Check CRC_OK flag in status byte 2
+			return false;
+	//debugln("HW Checksum ok");
+
+	// Check D16 checksum
+	uint16_t lcrc = FrSkyX_crc(&packet[3], packet_length - 5);		// Compute crc
+	uint16_t rcrc = (packet[packet_length-2] << 8) | (packet[packet_length-1] & 0xff);	// Received crc
+	if(lcrc != rcrc)
+		return false; 									// Bad CRC
+	//debugln("Checksum ok");
+
+	if (bind && (frsky_rx_format == FRSKY_RX_D16v2LBT || frsky_rx_format == FRSKY_RX_D16v2FCC))
+		for(uint8_t i=3; i<packet_length-2; i++)		//unXOR bind packet
+			packet[i] ^= 0xA7;
+	
+	uint8_t offset2=0;
+	if (bind && (frsky_rx_format == FRSKY_RX_D16LBT || frsky_rx_format == FRSKY_RX_D16FCC))
+		offset2=6;
+	if(init)
+	{//Save TXID
+		rx_tx_addr[3] = packet[3];
+		rx_tx_addr[2] = packet[4];
+		rx_tx_addr[1] = packet[5+offset2];
+		rx_tx_addr[0] = packet[6+offset2];				// RXnum
+	}
+	else
+		if(rx_tx_addr[3] != packet[offset] || rx_tx_addr[2] != packet[offset+1] || rx_tx_addr[1] != packet[offset+2+offset2])
+			return false;								// Bad address
+	//debugln("Address ok");
+	
+	if(!bind && rx_tx_addr[0] != packet[6])
+		return false;									// Bad RX num
+	
+	//debugln("Match");
+	return true;										// Full match
+}
+
+static void __attribute__((unused)) frsky_rx_build_telemetry_packet()
+{
+	uint16_t raw_channel[8];
+	uint32_t bits = 0;
+	uint8_t bitsavailable = 0;
+	uint8_t idx = 0;
+	uint8_t i;
+
+	if (frsky_rx_format == FRSKY_RX_D8)
+	{// decode D8 channels
+		raw_channel[0] = ((packet[10] & 0x0F) << 8 | packet[6]);
+		raw_channel[1] = ((packet[10] & 0xF0) << 4 | packet[7]);
+		raw_channel[2] = ((packet[11] & 0x0F) << 8 | packet[8]);
+		raw_channel[3] = ((packet[11] & 0xF0) << 4 | packet[9]);
+		raw_channel[4] = ((packet[16] & 0x0F) << 8 | packet[12]);
+		raw_channel[5] = ((packet[16] & 0xF0) << 4 | packet[13]);
+		raw_channel[6] = ((packet[17] & 0x0F) << 8 | packet[14]);
+		raw_channel[7] = ((packet[17] & 0xF0) << 4 | packet[15]);
+		for (i = 0; i < 8; i++) {
+			if (raw_channel[i] < 1290)
+				raw_channel[i] = 1290;
+			rx_rc_chan[i] = min(((raw_channel[i] - 1290) << 4) / 15, 2047);
+		}
+	}
+	else
+	{// decode D16 channels
+		raw_channel[0] = ((packet[10] << 8) & 0xF00) | packet[9];
+		raw_channel[1] = ((packet[11] << 4) & 0xFF0) | (packet[10] >> 4);
+		raw_channel[2] = ((packet[13] << 8) & 0xF00) | packet[12];
+		raw_channel[3] = ((packet[14] << 4) & 0xFF0) | (packet[13] >> 4);
+		raw_channel[4] = ((packet[16] << 8) & 0xF00) | packet[15];
+		raw_channel[5] = ((packet[17] << 4) & 0xFF0) | (packet[16] >> 4);
+		raw_channel[6] = ((packet[19] << 8) & 0xF00) | packet[18];
+		raw_channel[7] = ((packet[20] << 4) & 0xFF0) | (packet[19] >> 4);	
+		for (i = 0; i < 8; i++) {
+			// ignore failsafe channels
+			if(packet[7] != 0x10+(i<<1)) {
+				uint8_t shifted = (raw_channel[i] & 0x800)>0;
+				uint16_t channel_value = raw_channel[i] & 0x7FF;
+				if (channel_value < 64)
+					rx_rc_chan[shifted ? i + 8 : i] = 0;
+				else
+					rx_rc_chan[shifted ? i + 8 : i] = min(((channel_value - 64) << 4) / 15, 2047);
+			}
+		}
+	}
+
+	// buid telemetry packet
+	packet_in[idx++] = RX_LQI;
+	packet_in[idx++] = RX_RSSI;
+	packet_in[idx++] = 0;  // start channel
+	packet_in[idx++] = frsky_rx_format == FRSKY_RX_D8 ? 8 : 16; // number of channels in packet
+
+	// pack channels
+	for (i = 0; i < packet_in[3]; i++) {
+		bits |= ((uint32_t)rx_rc_chan[i]) << bitsavailable;
+		bitsavailable += 11;
+		while (bitsavailable >= 8) {
+			packet_in[idx++] = bits & 0xff;
+			bits >>= 8;
+			bitsavailable -= 8;
+		}
+	}
+}
+
+static void __attribute__((unused)) frsky_rx_data()
+{
+	uint16_t temp = FRSKY_RX_EEPROM_OFFSET;
+	frsky_rx_format = eeprom_read_byte((EE_ADDR)temp++) % FRSKY_RX_FORMATS;
+	rx_tx_addr[3] = eeprom_read_byte((EE_ADDR)temp++);
+	rx_tx_addr[2] = eeprom_read_byte((EE_ADDR)temp++);
+	rx_tx_addr[1] = eeprom_read_byte((EE_ADDR)temp++);
+	rx_tx_addr[0] = RX_num;
+	frsky_rx_finetune = eeprom_read_byte((EE_ADDR)temp++);
+	debug("format=%d, ", frsky_rx_format);
+	debug("addr[3]=%02X, ", rx_tx_addr[3]);
+	debug("addr[2]=%02X, ", rx_tx_addr[2]);
+	debug("addr[1]=%02X, ", rx_tx_addr[1]);
+	debug("rx_num=%02X, ",  rx_tx_addr[0]);
+	debugln("tune=%d", (int8_t)frsky_rx_finetune);
+	if(frsky_rx_format != FRSKY_RX_D16v2LBT && frsky_rx_format != FRSKY_RX_D16v2FCC)
+	{//D8 & D16v1
+		for (uint8_t ch = 0; ch < 47; ch++)
+			hopping_frequency[ch] = eeprom_read_byte((EE_ADDR)temp++);
+	}
+	else
+	{
+		FrSkyFormat=frsky_rx_format == FRSKY_RX_D16v2FCC?0:2;
+		FrSkyX2_init_hop();
+	}
+	debug("ch:");
+	for (uint8_t ch = 0; ch < 47; ch++)
+		debug(" %02X", hopping_frequency[ch]);
+	debugln("");
+
+	frsky_rx_initialise_cc2500();
+	frsky_rx_calibrate();
+	CC2500_WriteReg(CC2500_18_MCSM0, 0x08); // FS_AUTOCAL = manual
+	CC2500_WriteReg(CC2500_09_ADDR, rx_tx_addr[3]); // set address
+	CC2500_WriteReg(CC2500_07_PKTCTRL1, 0x05); // check address
+	if (option == 0)
+		CC2500_WriteReg(CC2500_0C_FSCTRL0, frsky_rx_finetune);
+	else
+		CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+	frsky_rx_set_channel(hopping_frequency_no);
+	phase = FRSKY_RX_DATA;
+}
+
+uint16_t initFrSky_Rx()
+{
+	state = 0;
+	frsky_rx_chanskip = 1;
+	hopping_frequency_no = 0;
+	rx_data_started = false;
+	frsky_rx_finetune = 0;
+	telemetry_link = 0;
+	packet_count = 0;
+	if (IS_BIND_IN_PROGRESS)
+	{
+		frsky_rx_format = FRSKY_RX_D8;
+		frsky_rx_initialise_cc2500();
+		phase = FRSKY_RX_TUNE_START;
+		debugln("FRSKY_RX_TUNE_START");
+	}
+	else
+		frsky_rx_data();
+	return 1000;
+}
+
+uint16_t FrSky_Rx_callback()
+{
+	static uint32_t pps_timer=0;
+	static uint8_t pps_counter=0;
+	static int8_t read_retry = 0;
+	static int8_t tune_low, tune_high;
+	uint8_t len, ch;
+
+	if ((prev_option != option) && (phase >= FRSKY_RX_DATA))
+	{
+		if (option == 0)
+			CC2500_WriteReg(CC2500_0C_FSCTRL0, frsky_rx_finetune);
+		else
+			CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+		prev_option = option;
+	}
+
+	if (rx_disable_lna != IS_POWER_FLAG_on)
+	{
+		rx_disable_lna = IS_POWER_FLAG_on;
+		CC2500_SetTxRxMode(rx_disable_lna ? TXRX_OFF : RX_EN);
+	}
+
+	len = CC2500_ReadReg(CC2500_3B_RXBYTES | CC2500_READ_BURST) & 0x7F;
+	switch(phase)
+	{
+		case FRSKY_RX_TUNE_START:
+			if (len == packet_length + 2) //+2=RSSI+LQI+CRC
+			{
+				CC2500_ReadData(packet, len);
+				if(frskyx_rx_check_crc_id(true,true))
+				{
+					frsky_rx_finetune = -127;
+					CC2500_WriteReg(CC2500_0C_FSCTRL0, frsky_rx_finetune);
+					phase = FRSKY_RX_TUNE_LOW;
+					debugln("FRSKY_RX_TUNE_LOW");
+					frsky_rx_strobe_rx();
+					return 1000;
+				}
+			}
+			frsky_rx_format = (frsky_rx_format + 1) % FRSKY_RX_FORMATS; // switch to next format (D8, D16FCC, D16LBT, D16v2FCC, D16v2LBT)
+			frsky_rx_initialise_cc2500();
+			frsky_rx_finetune += 10;
+			CC2500_WriteReg(CC2500_0C_FSCTRL0, frsky_rx_finetune);
+			frsky_rx_strobe_rx();
+			return 18000;
+
+		case FRSKY_RX_TUNE_LOW:
+			if (len == packet_length + 2) //+2=RSSI+LQI+CRC
+			{
+				CC2500_ReadData(packet, len);
+				if(frskyx_rx_check_crc_id(true,false)) {
+					tune_low = frsky_rx_finetune;
+					frsky_rx_finetune = 127;
+					CC2500_WriteReg(CC2500_0C_FSCTRL0, frsky_rx_finetune);
+					phase = FRSKY_RX_TUNE_HIGH;
+					debugln("FRSKY_RX_TUNE_HIGH");
+					frsky_rx_strobe_rx();
+					return 1000;
+				}
+			}
+			frsky_rx_finetune += 1;
+			CC2500_WriteReg(CC2500_0C_FSCTRL0, frsky_rx_finetune);
+			frsky_rx_strobe_rx();
+			return 18000;
+
+		case FRSKY_RX_TUNE_HIGH:
+			if (len == packet_length + 2) //+2=RSSI+LQI+CRC
+			{
+				CC2500_ReadData(packet, len);
+				if(frskyx_rx_check_crc_id(true,false)) {
+					tune_high = frsky_rx_finetune;
+					frsky_rx_finetune = (tune_low + tune_high) / 2;
+					CC2500_WriteReg(CC2500_0C_FSCTRL0, (int8_t)frsky_rx_finetune);
+					if(tune_low < tune_high)
+					{
+						phase = FRSKY_RX_BIND;
+						debugln("FRSKY_RX_TUNE_HIGH");
+					}
+					else
+					{
+						phase = FRSKY_RX_TUNE_START;
+						debugln("FRSKY_RX_TUNE_START");
+					}
+					frsky_rx_strobe_rx();
+					return 1000;
+				}
+			}
+			frsky_rx_finetune -= 1;
+			CC2500_WriteReg(CC2500_0C_FSCTRL0, frsky_rx_finetune);
+			frsky_rx_strobe_rx();
+			return 18000;
+
+		case FRSKY_RX_BIND:
+			if (len == packet_length + 2) //+2=RSSI+LQI+CRC
+			{
+				CC2500_ReadData(packet, len);
+				if(frskyx_rx_check_crc_id(true,false)) {
+					if(frsky_rx_format != FRSKY_RX_D16v2LBT && frsky_rx_format != FRSKY_RX_D16v2FCC)
+					{// D8 & D16v1
+						if(packet[5] <= 0x2D)
+						{
+							for (ch = 0; ch < 5; ch++)
+								hopping_frequency[packet[5]+ch] = packet[6+ch];
+							state |= 1 << (packet[5] / 5);
+						}
+					}
+					else
+						state=0x3FF; //No hop table for D16v2
+					if (state == 0x3FF)
+					{
+						debugln("Bind complete");
+						BIND_DONE;
+						// store format, finetune setting, txid, channel list
+						uint16_t temp = FRSKY_RX_EEPROM_OFFSET;
+						if(sub_protocol==FRSKY_CLONE)
+						{
+							if(frsky_rx_format==FRSKY_RX_D8)
+								temp=FRSKYD_CLONE_EEPROM_OFFSET;
+							else if(frsky_rx_format == FRSKY_RX_D16FCC || frsky_rx_format == FRSKY_RX_D16LBT)
+								temp=FRSKYX_CLONE_EEPROM_OFFSET;
+							else
+								temp=FRSKYX2_CLONE_EEPROM_OFFSET;
+						}
+						eeprom_write_byte((EE_ADDR)temp++, frsky_rx_format);
+						eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[3]);
+						eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[2]);
+						eeprom_write_byte((EE_ADDR)temp++, rx_tx_addr[1]);
+						if(sub_protocol==FRSKY_RX)
+							eeprom_write_byte((EE_ADDR)temp++, frsky_rx_finetune);
+						if(frsky_rx_format != FRSKY_RX_D16v2FCC && frsky_rx_format != FRSKY_RX_D16v2LBT)
+							for (ch = 0; ch < 47; ch++)
+								eeprom_write_byte((EE_ADDR)temp++, hopping_frequency[ch]);
+						frsky_rx_data();
+						debugln("FRSKY_RX_DATA");
+					}
+				}
+				frsky_rx_strobe_rx();
+			}
+			return 1000;
+
+		case FRSKY_RX_DATA:
+			if (len == packet_length + 2) //+2=RSSI+LQI+CRC
+			{
+				CC2500_ReadData(packet, len);
+				if(frskyx_rx_check_crc_id(false,false))
+				{
+					RX_RSSI = packet[len-2];
+					if(RX_RSSI >= 128)
+						RX_RSSI -= 128;
+					else
+						RX_RSSI += 128;
+					bool chanskip_valid=true;
+					// hop to next channel
+					if (frsky_rx_format != FRSKY_RX_D8)
+					{//D16v1 & D16v2
+						if(rx_data_started)
+						{
+							if(frsky_rx_chanskip != (((packet[4] & 0xC0) >> 6) | ((packet[5] & 0x3F) << 2)))
+							{
+								chanskip_valid=false;	// chanskip value has changed which surely indicates a bad frame
+								packet_count++;
+								if(packet_count>5)		// the TX must have changed chanskip...
+									frsky_rx_chanskip = ((packet[4] & 0xC0) >> 6) | ((packet[5] & 0x3F) << 2);	// chanskip init
+							}
+							else
+								packet_count=0;
+						}
+						else
+							frsky_rx_chanskip = ((packet[4] & 0xC0) >> 6) | ((packet[5] & 0x3F) << 2);	// chanskip init
+					}
+					hopping_frequency_no = (hopping_frequency_no + frsky_rx_chanskip) % 47;
+					frsky_rx_set_channel(hopping_frequency_no);
+					if(chanskip_valid)
+					{
+						if (telemetry_link == 0)
+						{ // send channels to TX
+							frsky_rx_build_telemetry_packet();
+							telemetry_link = 1;
+						}
+						pps_counter++;
+					}
+					rx_data_started = true;
+					read_retry = 0;
+				}
+			}
+			
+			// packets per second
+			if (millis() - pps_timer >= 1000) {
+				pps_timer = millis();
+				debugln("%d pps", pps_counter);
+				RX_LQI = pps_counter;
+				if(pps_counter==0)	// no packets for 1 sec or more...
+				{// restart the search
+					rx_data_started=false;
+					packet_count=0;
+				}
+				pps_counter = 0;
+			}
+
+			// skip channel if no packet received in time
+			if (read_retry++ >= 9) {
+				hopping_frequency_no = (hopping_frequency_no + frsky_rx_chanskip) % 47;
+				frsky_rx_set_channel(hopping_frequency_no);
+				if(rx_data_started)
+					read_retry = 0;
+				else
+					read_retry = -50; // retry longer until first packet is catched
+			}
+			break;
+	}
+	return 1000;
+}
+
+#endif

Multiprotocol/GD00X_nrf24l01.ino

@@ -16,7 +16,7 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 #if defined(GD00X_NRF24L01_INO)
 
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 //#define FORCE_GD00X_ORIGINAL_ID
 
@@ -208,6 +208,9 @@ uint16_t GD00X_callback()
 		if(--bind_counter==0)
 			BIND_DONE;
 	GD00X_send_packet();
+	#ifdef MULTI_SYNC
+		telemetry_set_input_sync(packet_period);
+	#endif
 	return packet_period;
 }
 

Multiprotocol/GW008_nrf24l01.ino

@@ -139,6 +139,9 @@ uint16_t GW008_callback()
 			return 5000;
 			break;
 		case GW008_DATA:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(GW008_PACKET_PERIOD);
+			#endif
 			GW008_send_packet(0);
 			break;
 	}

Multiprotocol/H8_3D_nrf24l01.ino

@@ -177,7 +177,12 @@ static void __attribute__((unused)) H8_3D_init()
 uint16_t H8_3D_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(packet_period);
+		#endif
 		H8_3D_send_packet(0);
+	}
 	else
 	{
 		if (bind_counter == 0)

Multiprotocol/HOTT_cc2500.ino

@@ -0,0 +1,387 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if defined(HOTT_CC2500_INO)
+
+#include "iface_cc2500.h"
+
+//#define HOTT_FORCE_ID		// Force ID of original dump
+
+#define HOTT_TX_PACKET_LEN	50
+#define HOTT_RX_PACKET_LEN	22
+#define HOTT_PACKET_PERIOD	10000
+#define HOTT_NUM_RF_CHANNELS 75
+#define HOTT_COARSE	0
+
+enum {
+    HOTT_START = 0x00,
+    HOTT_CAL   = 0x01,
+    HOTT_DATA1 = 0x02,
+    HOTT_RX1   = 0x03,
+    HOTT_RX2   = 0x04,
+};
+
+#define HOTT_FREQ0_VAL 0x6E
+
+// Some important initialization parameters, all others are either default,
+// or not important in the context of transmitter
+// FIFOTHR  00
+// SYNC1    D3
+// SYNC0    91
+// PKTLEN   32 - Packet length, 50 bytes
+// PKTCTRL1 04 - APPEND_STATUS on=RSSI+LQI, all other are receive parameters - irrelevant
+// PKTCTRL0 44 - whitening, use FIFO, use CRC, fixed packet length
+// ADDR     00
+// CHANNR   10
+// FSCTRL1  09 - IF 
+// FSCTRL0  00 - zero freq offset
+// FREQ2    5C - synthesizer frequencyfor 26MHz crystal
+// FREQ1    6C
+// FREQ0    B9
+// MDMCFG4  2D - 
+// MDMCFG3  3B - 
+// MDMCFG2  73 - disable DC blocking, MSK, no Manchester code, 32 bits sync word
+// MDMCFG1  A3 - FEC enable, 4 preamble bytes, CHANSPC_E - 03
+// MDMCFG0  AA - CHANSPC_M - AA
+// DEVIATN  47 - 
+// MCSM2    07 - 
+// MCSM1    00 - always use CCA, go to IDLE when done
+// MCSM0    08 - disable autocalibration, PO_TIMEOUT - 64, no pin radio control, no forcing XTAL to stay in SLEEP
+// FOCCFG   1D
+const PROGMEM uint8_t HOTT_init_values[] = {
+  /* 00 */ 0x2F, 0x2E, 0x2F, 0x00, 0xD3, 0x91, 0x32, 0x04,
+  /* 08 */ 0x44, 0x00, 0x00, 0x09, 0x00, 0x5C, 0x6C, HOTT_FREQ0_VAL + HOTT_COARSE,
+  /* 10 */ 0x2D, 0x3B, 0x73, 0xA3, 0xAA, 0x47, 0x07, 0x00,
+  /* 18 */ 0x08, 0x1D, 0x1C, 0xC7, 0x09, 0xF0, 0x87, 0x6B,
+  /* 20 */ 0xF0, 0xB6, 0x10, 0xEA, 0x0A, 0x00, 0x11
+};
+
+static void __attribute__((unused)) HOTT_rf_init()
+{
+	CC2500_Strobe(CC2500_SIDLE);
+
+	for (uint8_t i = 0; i < 39; ++i)
+		CC2500_WriteReg(i, pgm_read_byte_near(&HOTT_init_values[i]));
+
+	prev_option = option;
+	CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+	
+	CC2500_SetTxRxMode(TX_EN);
+	CC2500_SetPower();
+}
+
+static void __attribute__((unused)) HOTT_tune_chan()
+{
+	CC2500_Strobe(CC2500_SIDLE);
+	CC2500_WriteReg(CC2500_0A_CHANNR, (rf_ch_num+1)*3);
+	CC2500_Strobe(CC2500_SCAL);
+}
+
+static void __attribute__((unused)) HOTT_tune_chan_fast()
+{
+	CC2500_Strobe(CC2500_SIDLE);
+	CC2500_WriteReg(CC2500_0A_CHANNR, (rf_ch_num+1)*3);
+	CC2500_WriteReg(CC2500_25_FSCAL1, calData[rf_ch_num]);
+}
+
+static void __attribute__((unused)) HOTT_tune_freq()
+{
+	if ( prev_option != option )
+	{
+		CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+		CC2500_WriteReg(CC2500_0F_FREQ0, HOTT_FREQ0_VAL + HOTT_COARSE);
+		prev_option = option ;
+		phase = HOTT_START;	// Restart the tune process if option is changed to get good tuned values
+	}
+}
+
+const uint8_t PROGMEM HOTT_hop[][HOTT_NUM_RF_CHANNELS]=
+	{	{ 48, 37, 16, 62, 9, 50, 42, 22, 68, 0, 55, 35, 21, 74, 1, 56, 31, 20, 70, 11, 45, 32, 24, 71, 8, 54, 38, 26, 61, 13, 53, 30, 15, 65, 7, 52, 34, 28, 60, 3, 47, 39, 18, 69, 2, 49, 44, 23, 72, 5, 51, 43, 19, 64, 12, 46, 33, 17, 67, 6, 58, 36, 29, 73, 14, 57, 41, 25, 63, 4, 59, 40, 27, 66, 10 },
+		{ 50, 23, 5, 34, 67, 53, 22, 12, 39, 62, 51, 21, 10, 33, 63, 59, 16, 1, 43, 66, 49, 19, 8, 30, 71, 47, 24, 2, 35, 68, 45, 25, 14, 41, 74, 55, 18, 4, 32, 61, 54, 17, 11, 31, 72, 52, 28, 6, 38, 65, 46, 15, 9, 40, 60, 48, 26, 3, 37, 70, 58, 29, 0, 36, 64, 56, 20, 7, 42, 69, 57, 27, 13, 44, 73 },
+		{ 73, 51, 39, 18, 9, 64, 56, 34, 16, 12, 66, 58, 36, 25, 11, 61, 47, 40, 15, 8, 71, 50, 43, 20, 6, 62, 54, 42, 19, 3, 63, 46, 44, 29, 14, 72, 49, 33, 22, 5, 69, 57, 30, 21, 10, 70, 45, 35, 26, 7, 65, 59, 31, 28, 1, 67, 48, 32, 24, 0, 60, 55, 41, 17, 2, 74, 52, 38, 27, 4, 68, 53, 37, 23, 13 },
+		{ 52, 60, 40, 21, 14, 50, 72, 41, 23, 13, 59, 61, 39, 16, 6, 58, 66, 33, 17, 5, 55, 64, 43, 20, 12, 54, 74, 35, 29, 3, 46, 63, 37, 22, 10, 48, 65, 31, 27, 9, 49, 73, 38, 24, 11, 56, 70, 32, 15, 1, 51, 71, 44, 18, 8, 45, 67, 36, 25, 7, 57, 62, 34, 28, 2, 53, 69, 42, 19, 4, 47, 68, 30, 26, 0 },
+		{ 50, 16, 34, 6, 71, 51, 24, 40, 7, 68, 57, 27, 33, 14, 70, 55, 26, 30, 5, 74, 47, 28, 44, 11, 67, 49, 15, 32, 9, 61, 52, 22, 37, 13, 66, 59, 18, 42, 3, 62, 46, 29, 31, 12, 60, 48, 19, 38, 1, 72, 58, 17, 36, 4, 64, 53, 21, 39, 0, 63, 56, 20, 41, 2, 65, 45, 25, 35, 10, 69, 54, 23, 43, 8, 73 },
+		{ 55, 38, 12, 62, 23, 52, 44, 3, 66, 18, 54, 36, 10, 74, 16, 56, 42, 9, 70, 17, 58, 33, 5, 69, 20, 50, 40, 1, 63, 24, 53, 37, 13, 65, 15, 48, 34, 4, 61, 22, 57, 31, 6, 64, 26, 46, 35, 11, 72, 21, 47, 30, 7, 68, 29, 45, 32, 8, 60, 19, 49, 43, 2, 67, 27, 51, 39, 0, 71, 28, 59, 41, 14, 73, 25 },
+		{ 70, 32, 18, 10, 58, 69, 38, 22, 2, 54, 67, 36, 19, 12, 57, 62, 34, 20, 14, 52, 63, 41, 15, 3, 51, 73, 42, 28, 6, 48, 60, 43, 29, 5, 45, 64, 31, 17, 4, 56, 65, 35, 26, 13, 53, 61, 37, 23, 1, 49, 68, 40, 16, 9, 47, 71, 39, 25, 7, 50, 66, 33, 24, 8, 59, 72, 44, 27, 11, 46, 74, 30, 21, 0, 55 },
+		{ 6, 45, 71, 27, 44, 10, 46, 74, 22, 32, 0, 55, 69, 21, 33, 4, 50, 66, 18, 38, 7, 57, 62, 19, 36, 1, 48, 70, 20, 40, 8, 47, 68, 15, 43, 2, 58, 61, 26, 42, 3, 56, 72, 23, 34, 14, 54, 67, 16, 37, 5, 59, 64, 24, 30, 12, 52, 65, 25, 39, 13, 49, 73, 17, 31, 9, 53, 60, 28, 35, 11, 51, 63, 29, 41 },
+		{ 31, 65, 50, 20, 13, 37, 66, 45, 23, 5, 32, 69, 54, 19, 7, 39, 74, 52, 27, 1, 42, 64, 53, 22, 4, 43, 70, 58, 16, 3, 40, 71, 57, 17, 0, 35, 63, 56, 18, 9, 44, 72, 51, 21, 6, 33, 67, 46, 25, 11, 30, 73, 55, 15, 8, 36, 62, 48, 24, 10, 41, 60, 49, 29, 14, 34, 61, 47, 26, 2, 38, 68, 59, 28, 12 },
+		{ 67, 22, 49, 36, 13, 64, 28, 57, 37, 6, 65, 29, 46, 39, 3, 70, 26, 45, 35, 1, 62, 24, 58, 34, 10, 68, 19, 53, 33, 4, 66, 21, 52, 31, 7, 74, 18, 47, 32, 5, 61, 16, 51, 38, 8, 72, 23, 55, 30, 12, 73, 17, 59, 44, 0, 60, 15, 50, 43, 14, 63, 27, 48, 42, 11, 71, 20, 54, 41, 9, 69, 25, 56, 40, 2 },
+		{ 19, 38, 14, 66, 57, 18, 44, 7, 74, 48, 23, 30, 6, 71, 58, 26, 32, 5, 61, 46, 20, 34, 0, 68, 45, 24, 36, 1, 70, 50, 27, 33, 10, 63, 52, 16, 42, 9, 65, 51, 15, 41, 11, 64, 53, 22, 37, 3, 60, 56, 28, 35, 4, 67, 49, 17, 39, 13, 69, 54, 25, 43, 2, 73, 55, 21, 31, 8, 62, 47, 29, 40, 12, 72, 59 },
+		{ 4, 52, 64, 28, 44, 14, 46, 74, 16, 32, 11, 50, 68, 27, 36, 0, 47, 70, 26, 34, 13, 57, 61, 18, 38, 6, 56, 62, 19, 40, 5, 58, 67, 17, 31, 12, 54, 63, 22, 33, 3, 53, 72, 21, 41, 10, 48, 66, 15, 35, 7, 45, 60, 20, 37, 9, 51, 69, 25, 42, 2, 59, 71, 24, 39, 1, 55, 65, 23, 30, 8, 49, 73, 29, 43 },
+		{ 44, 66, 19, 1, 56, 35, 62, 20, 4, 54, 39, 70, 24, 5, 55, 31, 74, 26, 12, 58, 32, 60, 17, 10, 45, 37, 63, 22, 3, 50, 33, 64, 16, 7, 51, 34, 61, 21, 8, 48, 38, 68, 29, 0, 46, 36, 72, 28, 14, 49, 42, 69, 25, 6, 57, 43, 65, 18, 2, 52, 30, 71, 23, 13, 47, 41, 67, 15, 9, 53, 40, 73, 27, 11, 59 },
+		{ 12, 16, 36, 46, 69, 6, 20, 44, 58, 62, 11, 19, 34, 48, 71, 1, 18, 42, 50, 74, 3, 25, 31, 47, 65, 0, 24, 33, 45, 72, 2, 23, 35, 56, 64, 10, 22, 38, 49, 63, 7, 26, 37, 51, 70, 14, 21, 30, 53, 67, 5, 15, 40, 52, 66, 9, 17, 39, 55, 60, 13, 27, 41, 54, 73, 4, 28, 32, 57, 61, 8, 29, 43, 59, 68 },
+		{ 63, 42, 18, 2, 57, 71, 34, 22, 10, 48, 67, 36, 25, 4, 46, 60, 31, 28, 6, 47, 74, 37, 15, 0, 55, 65, 32, 24, 12, 56, 66, 40, 27, 14, 52, 62, 38, 19, 3, 50, 73, 33, 29, 11, 53, 61, 35, 16, 7, 58, 72, 41, 26, 5, 59, 69, 30, 20, 9, 51, 68, 44, 23, 1, 49, 70, 39, 17, 8, 54, 64, 43, 21, 13, 45 },
+		{ 52, 1, 71, 17, 36, 47, 7, 64, 26, 32, 53, 5, 60, 20, 42, 57, 2, 66, 18, 34, 56, 4, 63, 24, 35, 46, 13, 72, 22, 30, 48, 0, 67, 21, 39, 50, 3, 74, 16, 31, 59, 14, 61, 23, 37, 45, 6, 65, 19, 44, 51, 11, 62, 27, 41, 55, 9, 68, 15, 38, 58, 8, 70, 29, 40, 54, 10, 69, 28, 33, 49, 12, 73, 25, 43 }
+		};
+const uint16_t PROGMEM HOTT_hop_val[] = { 0xC06B, 0xC34A, 0xDB24, 0x8E09, 0x272E, 0x217F, 0x155B, 0xEDE8, 0x1D31, 0x0986, 0x56F7, 0x6454, 0xC42D, 0x01D2, 0xC253, 0x1180 };
+
+static void __attribute__((unused)) HOTT_init()
+{
+	packet[0] = pgm_read_word_near( &HOTT_hop_val[num_ch] );
+	packet[1] = pgm_read_word_near( &HOTT_hop_val[num_ch] )>>8;
+
+	for(uint8_t i=0; i<HOTT_NUM_RF_CHANNELS; i++)
+		hopping_frequency[i]=pgm_read_byte_near( &HOTT_hop[num_ch][i] );
+	
+	#ifdef HOTT_FORCE_ID
+		memcpy(rx_tx_addr,"\x7C\x94\x00\x0D\x50",5);
+	#endif
+	memset(&packet[30],0xFF,9);
+	packet[39]=0x07;		// unknown and constant
+	if(IS_BIND_IN_PROGRESS)
+	{
+		packet[28] = 0x80;	// unknown 0x80 when bind starts then when RX replies start normal, 0x89/8A/8B/8C/8D/8E during normal packets
+		packet[29] = 0x02;	// unknown 0x02 when bind starts then when RX replies cycle in sequence 0x1A/22/2A/0A/12, 0x02 during normal packets
+		memset(&packet[40],0xFA,5);
+		memcpy(&packet[45],rx_tx_addr,5);
+	}
+	else
+	{
+		packet[28] = 0x8C;	// unknown 0x80 when bind starts then when RX replies start normal, 0x89/8A/8B/8C/8D/8E during normal packets, 0x0F->config menu
+		packet[29] = 0x02;	// unknown 0x02 when bind starts then when RX replies cycle in sequence 0x1A/22/2A/0A/12, 0x02 during normal packets, 0x01->config menu, 0x0A->no more RX telemetry
+		memcpy(&packet[40],rx_tx_addr,5);
+
+		uint8_t addr=HOTT_EEPROM_OFFSET+RX_num*5;
+		for(uint8_t i=0;i<5;i++)
+			packet[45+i]=eeprom_read_byte((EE_ADDR)(addr+i));
+	}
+}
+
+static void __attribute__((unused)) HOTT_data_packet()
+{
+	packet[2] = hopping_frequency_no;
+
+	packet[3] = 0x00;	// used for failsafe but may also be used for additional channels
+	#ifdef FAILSAFE_ENABLE
+		static uint8_t failsafe_count=0;
+		if(IS_FAILSAFE_VALUES_on && IS_BIND_DONE)
+		{
+			failsafe_count++;
+			if(failsafe_count>=3)
+			{
+				FAILSAFE_VALUES_off;
+				failsafe_count=0;
+			}
+		}
+		else
+			failsafe_count=0;
+	#endif
+
+	// Channels value are PPM*2, -100%=1100µs, +100%=1900µs, order TAER
+	uint16_t val;
+	for(uint8_t i=4;i<28;i+=2)
+	{
+		val=Channel_data[(i-4)>>1];
+		val=(((val<<2)+val)>>2)+860*2;					// value range 860<->2140 *2 <-> -125%<->+125%
+		#ifdef FAILSAFE_ENABLE
+			if(failsafe_count==1)
+			{ // first failsafe packet
+				packet[3]=0x40;
+				uint16_t fs=Failsafe_data[(i-4)>>1];
+				if( fs == FAILSAFE_CHANNEL_HOLD || fs == FAILSAFE_CHANNEL_NOPULSES)
+					val|=0x8000;						// channel hold flag
+				else
+				{
+					val=(((fs<<2)+fs)>>2)+860*2;		// value range 860<->2140 *2 <-> -125%<->+125%
+					val|=0x4000;						// channel specific position flag
+				}
+			}
+			else if(failsafe_count==2)
+			{ // second failsafe packet=timing?
+				packet[3]=0x50;
+				if(i==4)
+					val=2;
+				else
+					val=0;
+			}
+		#endif
+		packet[i] = val;
+		packet[i+1] = val>>8;
+	}
+
+	#ifdef HOTT_FW_TELEMETRY
+		static uint8_t prev_SerialRX_val=0;
+		if(HoTT_SerialRX && HoTT_SerialRX_val >= 0xD7 && HoTT_SerialRX_val <= 0xDF)
+		{
+			if(prev_SerialRX_val!=HoTT_SerialRX_val)
+			{
+				prev_SerialRX_val=HoTT_SerialRX_val;
+				packet[28] = HoTT_SerialRX_val;			// send the touch being pressed only once
+			}
+			else
+				packet[28] = 0xDF;						// no touch pressed
+			packet[29] = 0x01;							// 0x01->config menu
+		}
+		else
+		{
+			packet[28] = 0x8C;							// unknown 0x80 when bind starts then when RX replies start normal, 0x89/8A/8B/8C/8D/8E during normal packets, 0x0F->config menu
+			packet[29] = 0x02;							// unknown 0x02 when bind starts then when RX replies cycle in sequence 0x1A/22/2A/0A/12, 0x02 during normal packets, 0x01->config menu, 0x0A->no more RX telemetry
+		}
+	#endif
+
+	CC2500_SetTxRxMode(TX_EN);
+	CC2500_SetPower();
+	CC2500_WriteReg(CC2500_06_PKTLEN, 0x32);
+	CC2500_WriteData(packet, HOTT_TX_PACKET_LEN);
+	#if 0
+		debug("RF:%02X P:",rf_ch_num);
+		for(uint8_t i=0;i<HOTT_TX_PACKET_LEN;i++)
+			debug(" %02X",packet[i]);
+		debugln("");
+	#endif
+	hopping_frequency_no++;
+	hopping_frequency_no %= HOTT_NUM_RF_CHANNELS;
+	rf_ch_num=hopping_frequency[hopping_frequency_no];
+}
+
+uint16_t ReadHOTT()
+{
+	#ifdef HOTT_FW_TELEMETRY
+		static uint8_t pps_counter=0;
+	#endif
+
+	switch(phase)
+	{
+		case HOTT_START:
+			rf_ch_num = 0;
+			HOTT_tune_chan();
+			phase = HOTT_CAL;
+			return 2000;
+		case HOTT_CAL:
+			calData[rf_ch_num]=CC2500_ReadReg(CC2500_25_FSCAL1);
+			if (++rf_ch_num < HOTT_NUM_RF_CHANNELS)
+				HOTT_tune_chan();
+			else
+			{
+				hopping_frequency_no = 0;
+				rf_ch_num=hopping_frequency[hopping_frequency_no];
+				counter = 0;
+				phase = HOTT_DATA1;
+			}
+			return 2000;
+
+		/* Work cycle: 10ms */
+		case HOTT_DATA1:
+			//TX
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(HOTT_PACKET_PERIOD);
+			#endif
+			HOTT_tune_freq();
+			HOTT_tune_chan_fast();
+			HOTT_data_packet();
+			phase = HOTT_RX1;
+			return 4500;
+		case HOTT_RX1:
+			//RX
+			CC2500_SetTxRxMode(RX_EN);
+			CC2500_WriteReg(CC2500_06_PKTLEN, HOTT_RX_PACKET_LEN);
+			CC2500_Strobe(CC2500_SRX);
+			phase = HOTT_RX2;
+			return 4500;
+		case HOTT_RX2:
+			//Telemetry
+			len = CC2500_ReadReg(CC2500_3B_RXBYTES | CC2500_READ_BURST) & 0x7F;	
+			if (len==HOTT_RX_PACKET_LEN+2)
+			{
+				CC2500_ReadData(packet_in, len);
+				if(memcmp(rx_tx_addr,packet_in,5)==0)
+				{ // TX ID matches
+					if(IS_BIND_IN_PROGRESS)
+					{
+						debug("B:");
+						for(uint8_t i=0;i<HOTT_RX_PACKET_LEN;i++)
+							debug(" %02X", packet_in[i]);
+						debugln("");
+						uint8_t addr=HOTT_EEPROM_OFFSET+RX_num*5;
+						for(uint8_t i=0; i<5; i++)
+							eeprom_write_byte((EE_ADDR)(addr+i),packet_in[5+i]);
+						BIND_DONE;
+						HOTT_init();
+					}
+					#ifdef HOTT_FW_TELEMETRY
+						else
+						{	//Telemetry
+							// [0..4] = TXID
+							// [5..9] = RXID
+							// [10] = 0x40 bind, 0x00 normal, 0x80 config menu
+							// [11] = telmetry pages. For sensors 0x00 to 0x04, for config mennu 0x00 to 0x12.
+							// Normal telem page 0 = 0x00, 0x33, 0x34, 0x46, 0x64, 0x33, 0x0A, 0x00, 0x00, 0x00
+							//				= 0x55, 0x32, 0x38, 0x55, 0x64, 0x32, 0xD0, 0x07, 0x00, 0x55
+							//   Page 0 [12] = [21] = ??
+							//   Page 0 [13] = RX_Voltage*10 in V
+							//   Page 0 [14] = Temperature-20 in °C
+							//   Page 0 [15] = RX_RSSI
+							//   Page 0 [16] = RX_LQI ??
+							//   Page 0 [17] = RX_STR ??
+							//   Page 0 [18,19] = [19]*256+[18]=max lost packet time in ms, max value seems 2s=0x7D0
+							//   Page 0 [20] = 0x00 ??
+							// Config menu consists of the different telem pages put all together
+							//   Page X [12] = seems like all the telem pages with the same value are going together to make the full config menu text. Seen so far 'a', 'b', 'c', 'd' 
+							//   Page X [13..21] = 9 ascii chars to be displayed, char is highlighted when ascii|0x80
+							//   Screen display is 21 characters large which means that once the first 21 chars are filled go to the begining of the next line
+							//   Menu commands are sent through TX packets:
+							//     packet[28]= 0xXF=>no key press, 0xXD=>down, 0xXB=>up, 0xX9=>enter, 0xXE=>right, 0xX7=>left with X=0 or D
+							//     packet[29]= 0xX1/0xX9 with X=0 or X counting 0,1,1,2,2,..,9,9
+							TX_RSSI = packet_in[22];
+							if(TX_RSSI >=128)
+								TX_RSSI -= 128;
+							else
+								TX_RSSI += 128;
+							// Reduce telemetry to 14 bytes
+							packet_in[0]= TX_RSSI;
+							packet_in[1]= TX_LQI;
+							debug("T=");
+							for(uint8_t i=10;i < HOTT_RX_PACKET_LEN; i++)
+							{
+								packet_in[i-8]=packet_in[i];
+								debug(" %02X",packet_in[i]);
+							}
+							debugln("");
+							telemetry_link=2;
+						}
+						pps_counter++;
+					#endif
+				}
+			}
+			#ifdef HOTT_FW_TELEMETRY
+				packet_count++;
+				if(packet_count>=100)
+				{
+					TX_LQI=pps_counter;
+					pps_counter=packet_count=0;
+				}
+			#endif
+			CC2500_Strobe(CC2500_SFRX);							//Flush the RXFIFO
+			phase=HOTT_DATA1;
+			return 1000;
+	}
+	return 0;
+}
+
+uint16_t initHOTT()
+{
+	num_ch=random(0xfefefefe)%16;
+	HOTT_init();
+	HOTT_rf_init();
+	packet_count=0;
+	#ifdef HOTT_FW_TELEMETRY
+		HoTT_SerialRX_val=0;
+		HoTT_SerialRX=false;
+	#endif
+	phase = HOTT_START;
+	return 10000;
+}
+
+#endif

Multiprotocol/Hisky_nrf24l01.ino

@@ -123,8 +123,8 @@ static void __attribute__((unused)) build_ch_data()
 	for (i = 0; i< 8; i++) {
 		j=CH_AETR[i];
 		temp=convert_channel_16b_limit(j,0,1000);            			
-		if (j == THROTTLE) // It is clear that hisky's throttle stick is made reversely, so I adjust it here on purpose
-			temp = 1000 -temp;
+		if (j == CH3) // It is clear that hisky's throttle stick is made reversely, so I adjust it here on purpose
+			temp = 1000 - temp;
 		if (j == CH7)
 			temp = temp < 400 ? 0 : 3; // Gyro mode, 0 - 6 axis, 3 - 3 axis 
 		packet[i] = (uint8_t)(temp&0xFF);
@@ -151,6 +151,9 @@ uint16_t hisky_cb()
 				phase=6;
 				break;
 			case 7:	// build packet
+				#ifdef MULTI_SYNC
+					telemetry_set_input_sync(5000);
+				#endif
 				#ifdef FAILSAFE_ENABLE
 					if(IS_FAILSAFE_VALUES_on && hopping_frequency_no==0)
 					{ //  send failsafe every 100ms
@@ -159,6 +162,7 @@ uint16_t hisky_cb()
 						convert_failsafe_HK310(CH5,    &packet[4],&packet[5]);
 						packet[7]=0xAA;
 						packet[8]=0x5A;
+						FAILSAFE_VALUES_off;
 					}
 					else
 				#endif
@@ -216,6 +220,9 @@ uint16_t hisky_cb()
 			break;
 		case 7:
 			//Build normal packet
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(9000);
+			#endif
 			build_ch_data();
 			break;
 		case 8:

Multiprotocol/Hitec_cc2500.ino

@@ -146,6 +146,11 @@ static void __attribute__((unused)) HITEC_build_packet()
 				break;
 			case 0x7B:
 				packet[5]=hopping_frequency[13]>>1;	// if not there the Optima link is jerky...
+				packet[14]=0x2A;
+				packet[15]=0x46; // unknown but if 0x45 then 17=0x46, if 0x46 then 17=0x46 or 0x47, if 0x47 then 0x45 or 0x46
+				packet[16]=0x2A;
+				packet[17]=0x47;
+				packet[18]=0x2A;
 				break;
 		}
 		if(sub_protocol==MINIMA)
@@ -259,6 +264,9 @@ uint16_t ReadHITEC()
 		case HITEC_PREP:
 			if ( prev_option == option )
 			{	// No user frequency change
+				#ifdef MULTI_SYNC
+					telemetry_set_input_sync(HITEC_PACKET_PERIOD);
+				#endif
 				HITEC_change_chan_fast();
 				hopping_frequency_no++;
 				if(hopping_frequency_no>=rf_ch_num)
@@ -285,32 +293,32 @@ uint16_t ReadHITEC()
 			return HITEC_RX1_TIMING;
 		case HITEC_RX2:
 			uint8_t len=CC2500_ReadReg(CC2500_3B_RXBYTES | CC2500_READ_BURST) & 0x7F;
-			if(len && len<MAX_PKT)
+			if(len && len<TELEMETRY_BUFFER_SIZE)
 			{ // Something has been received
-				CC2500_ReadData(pkt, len);
-				if( (pkt[len-1] & 0x80) && pkt[0]==len-3 && pkt[1]==rx_tx_addr[1] && pkt[2]==rx_tx_addr[2] && pkt[3]==rx_tx_addr[3])
+				CC2500_ReadData(packet_in, len);
+				if( (packet_in[len-1] & 0x80) && packet_in[0]==len-3 && packet_in[1]==rx_tx_addr[1] && packet_in[2]==rx_tx_addr[2] && packet_in[3]==rx_tx_addr[3])
 				{ //valid crc && length ok && tx_id ok
 					debug("RX:l=%d",len);
 					for(uint8_t i=0;i<len;i++)
-						debug(",%02X",pkt[i]);
+						debug(",%02X",packet_in[i]);
 					if(IS_BIND_IN_PROGRESS)
 					{
 						if(len==13)	// Bind packets have a length of 13
 						{ // bind packet: 0A,00,E5,F2,7X,05,06,07,08,09,00
 							debug(",bind");
 							boolean check=true;
-							for(uint8_t i=5;i<=10;i++)
-								if(pkt[i]!=i%10) check=false;
-							if((pkt[4]&0xF0)==0x70 && check)
+							for(uint8_t i=5;i<10;i++)
+								if(packet_in[i]!=i) check=false;
+							if((packet_in[4]&0xF0)==0x70 && check)
 							{
-								bind_phase=pkt[4]+1;
+								bind_phase=packet_in[4]+1;
 								if(bind_phase==0x7B)
 									bind_counter=164;	// in dumps the RX stops to reply at 0x7B so wait a little and exit
 							}
 						}
 					}
 					else
-						if( len==15 && pkt[4]==0 && pkt[12]==0 )
+						if( len==15 && packet_in[4]==0 && packet_in[12]==0 )
 						{	// Valid telemetry packets
 							// no station:
 							//		0C,1C,A1,2B,00,00,00,00,00,00,00,8D,00,64,8E	-> 00 8D=>RX battery voltage 0x008D/28=5.03V
@@ -323,40 +331,40 @@ uint16_t ReadHITEC()
 							//		0C,1C,A1,2B,00,16,00,00,00,00,00,16,00,2C,8E
 							//		0C,1C,A1,2B,00,17,00,00,00,42,44,17,00,48,8D	-> 42=>temperature3 0x42-0x28=26°C,44=>temperature4 0x44-0x28=28°C
 							//		0C,1C,A1,2B,00,18,00,00,00,00,00,18,00,50,92
-							debug(",telem,%02x",pkt[14]&0x7F);
+							debug(",telem,%02x",packet_in[14]&0x7F);
 							#if defined(HITEC_FW_TELEMETRY) || defined(HITEC_HUB_TELEMETRY)
-								TX_RSSI = pkt[13];
+								TX_RSSI = packet_in[13];
 								if(TX_RSSI >=128)
 									TX_RSSI -= 128;
 								else
 									TX_RSSI += 128;
-								TX_LQI = pkt[14]&0x7F;
+								TX_LQI = packet_in[14]&0x7F;
 							#endif
 							#if defined(HITEC_FW_TELEMETRY)
 								if(sub_protocol==OPT_FW)
 								{
 									// 8 bytes telemetry packets => see at the end of this file how to fully decode it
-									pkt[0]=TX_RSSI;				// TX RSSI
-									pkt[1]=TX_LQI;				// TX LQI
-									uint8_t offset=pkt[5]==0?1:0;
+									packet_in[0]=TX_RSSI;				// TX RSSI
+									packet_in[1]=TX_LQI;				// TX LQI
+									uint8_t offset=packet_in[5]==0?1:0;
 									for(uint8_t i=5;i < 11; i++)
-										pkt[i-3]=pkt[i+offset];	// frame number followed by 5 bytes of data
+										packet_in[i-3]=packet_in[i+offset];	// frame number followed by 5 bytes of data
 									telemetry_link=2;			// telemetry forward available
 								}
 							#endif
 							#if defined(HITEC_HUB_TELEMETRY)
 								if(sub_protocol==OPT_HUB)
 								{
-									switch(pkt[5])		// telemetry frame number
+									switch(packet_in[5])		// telemetry frame number
 									{
 										case 0x00:
-											v_lipo1 = (pkt[10])<<5 | (pkt[11])>>3;	// calculation in float is volt=(pkt[10]<<8+pkt[11])/28
+											v_lipo1 = (packet_in[10])<<5 | (packet_in[11])>>3;	// calculation in float is volt=(packet_in[10]<<8+packet_in[11])/28
 											break;
 										case 0x11:
-											v_lipo1 = (pkt[9])<<5 | (pkt[10])>>3;	// calculation in float is volt=(pkt[9]<<8+pkt[10])/28
+											v_lipo1 = (packet_in[9])<<5 | (packet_in[10])>>3;	// calculation in float is volt=(packet_in[9]<<8+packet_in[10])/28
 											break;
 										case 0x18:
-											v_lipo2 =  (pkt[6])<<5 | (pkt[7])>>3;	// calculation in float is volt=(pkt[6]<<8+pkt[7])/10
+											v_lipo2 =  (packet_in[6])<<5 | (packet_in[7])>>3;	// calculation in float is volt=(packet_in[6]<<8+packet_in[7])/10
 											break;
 									}
 									telemetry_link=1;			// telemetry hub available
@@ -391,10 +399,6 @@ uint16_t initHITEC()
 		rx_tx_addr[3]=0x6A;
 		memcpy((void *)hopping_frequency,(void *)"\x00\x3A\x4A\x32\x0C\x58\x2A\x10\x26\x20\x08\x60\x68\x70\x78\x80\x88\x56\x5E\x66\x6E",HITEC_NUM_FREQUENCE);
 	#endif
-	#if defined(HITEC_HUB_TELEMETRY)
-		if(sub_protocol==OPT_HUB)
-			init_frskyd_link_telemetry();
-	#endif
 	phase = HITEC_START;
 	return 10000;
 }

Multiprotocol/Hontai_nrf24l01.ino

@@ -242,9 +242,14 @@ uint16_t HONTAI_callback()
 		}
 	}
 	else
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(packet_period);
+		#endif
 		HONTAI_send_packet(0);
+	}
 
-	return sub_protocol == FQ777_951 ? FQ777_951_PACKET_PERIOD : HONTAI_PACKET_PERIOD;
+	return packet_period;
 }
 
 uint16_t initHONTAI()
@@ -253,6 +258,7 @@ uint16_t initHONTAI()
 	bind_counter = HONTAI_BIND_COUNT;
 	HONTAI_initialize_txid();
 	HONTAI_init();
+	packet_period = sub_protocol == FQ777_951 ? FQ777_951_PACKET_PERIOD : HONTAI_PACKET_PERIOD;
 	return HONTAI_INITIAL_WAIT;
 }
 #endif

Multiprotocol/Hubsan_a7105.ino

@@ -376,6 +376,9 @@ uint16_t ReadHubsan()
 		case DATA_4:
 		case DATA_5:
 			if( txState == 0) { // send packet
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(10000);
+			#endif
 #ifdef HUBSAN_HUB_TELEMETRY
 				rfMode = A7105_TX;
 #endif
@@ -464,9 +467,6 @@ uint16_t initHubsan()
 	}
 	packet_count=0;
 	bind_phase=0;
-	#ifdef HUBSAN_HUB_TELEMETRY
-		init_frskyd_link_telemetry();
-	#endif
 	return 10000;
 }
 

Multiprotocol/J6Pro_cyrf6936.ino

@@ -201,7 +201,10 @@ uint16_t ReadJ6Pro()
             cyrf_datainit();
             phase = J6PRO_CHAN_1;
         case J6PRO_CHAN_1:
-            //Keep transmit power updated
+			#ifdef MULTI_SYNC
+                telemetry_set_input_sync(24550);
+			#endif
+			//Keep transmit power updated
             CYRF_SetPower(0x28);
             j6pro_build_data_packet();
             //return 3400;

Multiprotocol/KF606_nrf24l01.ino

@@ -16,7 +16,7 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 #if defined(KF606_NRF24L01_INO)
 
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 //#define FORCE_KF606_ORIGINAL_ID
 
@@ -86,6 +86,9 @@ static void __attribute__((unused)) KF606_init()
 
 uint16_t KF606_callback()
 {
+	#ifdef MULTI_SYNC
+		telemetry_set_input_sync(KF606_PACKET_PERIOD);
+	#endif
 	if(IS_BIND_IN_PROGRESS)
 		if(--bind_counter==0)
 		{

Multiprotocol/KN_nrf24l01.ino

@@ -279,12 +279,14 @@ uint16_t initKN()
 		packet_period = KN_WL_SENDING_PACKET_PERIOD;
 		bind_counter  = KN_WL_BIND_COUNT;
 		packet_count  = KN_WL_PACKET_SEND_COUNT;
+		seed = KN_WL_PACKET_SEND_COUNT * KN_WL_SENDING_PACKET_PERIOD;
 	}
 	else
 	{
 		packet_period = KN_FX_SENDING_PACKET_PERIOD;
 		bind_counter  = KN_FX_BIND_COUNT;
 		packet_count  = KN_FX_PACKET_SEND_COUNT;
+		seed = KN_FX_PACKET_SEND_COUNT * KN_FX_SENDING_PACKET_PERIOD;
 	}
 	kn_init();
 	phase = IS_BIND_IN_PROGRESS ? KN_PHASE_PRE_BIND : KN_PHASE_PRE_SEND;
@@ -318,6 +320,9 @@ uint16_t kn_callback()
 		case KN_PHASE_SENDING:
 			if(packet_sent >= packet_count)
 			{
+				#ifdef MULTI_SYNC
+					telemetry_set_input_sync(seed);
+				#endif
 				packet_sent = 0;
 				hopping_frequency_no++;
 				if(hopping_frequency_no >= KN_RF_CH_COUNT) hopping_frequency_no = 0;

Multiprotocol/MJXQ_nrf24l01.ino

@@ -18,7 +18,7 @@
 #if defined(MJXQ_NRF24L01_INO)
 
 #include "iface_nrf24l01.h"
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 #define MJXQ_BIND_COUNT		150
 #define MJXQ_PACKET_PERIOD	4000  // Timeout for callback in uSec
@@ -327,7 +327,12 @@ static void __attribute__((unused)) MJXQ_initialize_txid()
 uint16_t MJXQ_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(MJXQ_PACKET_PERIOD);
+		#endif
 		MJXQ_send_packet(0);
+	}
 	else
 	{
 		if (bind_counter == 0)

Multiprotocol/MT99xx_nrf24l01.ino

@@ -222,7 +222,12 @@ static void __attribute__((unused)) MT99XX_initialize_txid()
 uint16_t MT99XX_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(packet_period);
+		#endif
 		MT99XX_send_packet();
+	}
 	else
 	{
 		if (bind_counter == 0)

Multiprotocol/Multi.txt

@@ -1,6 +1,6 @@
 1,Flysky,Flysky,V9x9,V6x6,V912,CX20
 2,Hubsan,H107,H301,H501
-3,FrskyD
+3,FrskyD,D8,Cloned
 4,Hisky,Hisky,HK310
 5,V2x2,V2x2,JXD506
 6,DSM,DSM2-22,DSM2-11,DSMX-22,DSMX-11,AUTO
@@ -12,8 +12,8 @@
 12,CX10,GREEN,BLUE,DM007,---,J3015_1,J3015_2,MK33041
 13,CG023,CG023,YD829
 14,Bayang,Bayang,H8S3D,X16_AH,IRDRONE,DHD_D4
-15,FrskyX,CH_16,CH_8,EU_16,EU_8
-16,ESky
+15,FrskyX,CH_16,CH_8,EU_16,EU_8,Cloned
+16,ESky,Std,ET4
 17,MT99xx,MT,H7,YZ,LS,FY805
 18,MJXq,WLH08,X600,X800,H26D,E010,H26WH,PHOENIX
 19,Shenqi
@@ -32,7 +32,7 @@
 32,GW008
 33,DM002
 34,CABELL,CAB_V3,C_TELEM,-,-,-,-,F_SAFE,UNBIND
-35,ESKY150
+35,ESKY150,4CH,7CH
 36,H8_3D,H8_3D,H20H,H20Mini,H30Mini
 37,CORONA,COR_V1,COR_V2,FD_V3
 38,CFlie
@@ -43,8 +43,8 @@
 43,Traxxas,RX6519
 44,NCC1701
 45,E01X,E012,E015,E016H
-46,V911S
-47,GD00X,GD_V1,GD_V2
+46,V911S,V911S,E119
+47,GD00x,GD_V1,GD_V2
 48,V761
 49,KF606
 50,Redpine,Fast,Slow
@@ -52,6 +52,17 @@
 52,ZSX,280
 53,Flyzone,FZ-410
 54,Scanner
-55,FrskyX_RX,FCC,EU_LBT
+55,Frsky_RX,RX,CloneTX
 56,AFHDS2A_RX
-63,XN_DUMP,250K,1M,2M
+57,HoTT
+58,FX816,P38
+59,Bayang_RX
+60,Pelikan
+61,Tiger
+62,XK,X450,X420
+63,XN_DUMP,250K,1M,2M,AUTO
+64,FrskyX2,CH_16,CH_8,EU_16,EU_8,Cloned
+65,FrSkyR9,915MHz,868MHz,915_8ch,868_8ch
+66,PROPEL,74-Z
+67,LR12,LR12,LR12_6ch
+68,Skyartec

Multiprotocol/Multi_Names.ino

@@ -0,0 +1,354 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if defined(MULTI_NAMES)
+
+const char STR_FLYSKY[]		="FlySky";
+const char STR_HUBSAN[]		="Hubsan";
+const char STR_FRSKYD[]		="FrSky D";
+const char STR_HISKY[]		="Hisky";
+const char STR_V2X2[]		="V2x2";
+const char STR_DSM[]		="DSM";
+const char STR_DEVO[]		="Devo";
+const char STR_YD717[]		="YD717";
+const char STR_KN[]			="KN";
+const char STR_SYMAX[]		="SymaX";
+const char STR_SLT[]		="SLT";
+const char STR_CX10[]		="CX10";
+const char STR_CG023[]		="CG023";
+const char STR_BAYANG[]		="Bayang";
+const char STR_FRSKYL[]		="FrSky L";
+const char STR_FRSKYX[]		="FrSky X";
+const char STR_FRSKYX2[]	="FrSkyX2";
+const char STR_ESKY[]		="ESky";
+const char STR_MT99XX[]		="MT99XX";
+const char STR_MJXQ[]		="MJXq";
+const char STR_SHENQI[]		="Shenqi";
+const char STR_FY326[]		="FY326";
+const char STR_SFHSS[]		="SFHSS";
+const char STR_J6PRO[]		="J6 Pro";
+const char STR_FQ777[]		="FQ777";
+const char STR_ASSAN[]		="Assan";
+const char STR_FRSKYV[]		="FrSky V";
+const char STR_HONTAI[]		="Hontai";
+const char STR_AFHDS2A[]	="FSky 2A";
+const char STR_Q2X2[]		="Q2x2";
+const char STR_WK2x01[]		="Walkera";
+const char STR_Q303[]		="Q303";
+const char STR_GW008[]		="GW008";
+const char STR_DM002[]		="DM002";
+const char STR_CABELL[]		="Cabell";
+const char STR_ESKY150[]	="Esky150";
+const char STR_H8_3D[]		="H8 3D";
+const char STR_CORONA[]		="Corona";
+const char STR_CFLIE[]		="CFlie";
+const char STR_HITEC[]		="Hitec";
+const char STR_WFLY[]		="WFly";
+const char STR_BUGS[]		="Bugs";
+const char STR_BUGSMINI[]	="BugMini";
+const char STR_TRAXXAS[]	="Traxxas";
+const char STR_NCC1701[]	="NCC1701";
+const char STR_E01X[]		="E01X";
+const char STR_V911S[]		="V911S";
+const char STR_GD00X[]		="GD00x";
+const char STR_V761[]		="V761";
+const char STR_KF606[]		="KF606";
+const char STR_REDPINE[]	="Redpine";
+const char STR_POTENSIC[]	="Potensi";
+const char STR_ZSX[]		="ZSX";
+const char STR_FLYZONE[]	="FlyZone";
+const char STR_SCANNER[]	="Scanner";
+const char STR_FRSKY_RX[]	="FrSkyRX";
+const char STR_AFHDS2A_RX[]	="FS2A_RX";
+const char STR_HOTT[]		="HoTT";
+const char STR_FX816[]		="FX816";
+const char STR_BAYANG_RX[]	="BayanRX";
+const char STR_PELIKAN[]	="Pelikan";
+const char STR_TIGER[]		="Tiger";
+const char STR_XK[]			="XK";
+const char STR_XN297DUMP[]	="XN297DP";
+const char STR_FRSKYR9[]	="FrSkyR9";
+const char STR_PROPEL[]		="PROPEL";
+const char STR_SKYARTEC[]	="Skyartc";
+
+const char STR_SUBTYPE_FLYSKY[] =     "\x04""Std\0""V9x9""V6x6""V912""CX20";
+const char STR_SUBTYPE_HUBSAN[] =     "\x04""H107""H301""H501";
+const char STR_SUBTYPE_FRSKYD[] =     "\x06""D8\0   ""Cloned";
+const char STR_SUBTYPE_FRSKYX[] =     "\x07""D16\0   ""D16 8ch""LBT(EU)""LBT 8ch""Cloned\0";
+const char STR_SUBTYPE_HISKY[] =      "\x05""Std\0 ""HK310";
+const char STR_SUBTYPE_V2X2[] =       "\x06""Std\0  ""JXD506";
+const char STR_SUBTYPE_DSM[] =        "\x06""2 22ms""2 11ms""X 22ms""X 11ms";
+const char STR_SUBTYPE_DEVO[] =       "\x04""8ch\0""10ch""12ch""6ch\0""7ch\0";
+const char STR_SUBTYPE_YD717[] =      "\x07""Std\0   ""SkyWlkr""Syma X4""XINXUN\0""NIHUI\0 ";
+const char STR_SUBTYPE_KN[] =         "\x06""WLtoys""FeiLun";
+const char STR_SUBTYPE_SYMAX[] =      "\x03""Std""X5C";
+const char STR_SUBTYPE_SLT[] =        "\x06""V1_6ch""V2_8ch""Q100\0 ""Q200\0 ""MR100\0";
+const char STR_SUBTYPE_CX10[] =       "\x07""Green\0 ""Blue\0  ""DM007\0 ""-\0     ""JC3015a""JC3015b""MK33041";
+const char STR_SUBTYPE_CG023[] =      "\x05""Std\0 ""YD829";
+const char STR_SUBTYPE_BAYANG[] =     "\x07""Std\0   ""H8S3D\0 ""X16 AH\0""IRDrone""DHD D4";
+const char STR_SUBTYPE_MT99[] =       "\x06""MT99\0 ""H7\0   ""YZ\0   ""LS\0   ""FY805";
+const char STR_SUBTYPE_MJXQ[] =       "\x07""WLH08\0 ""X600\0  ""X800\0  ""H26D\0  ""E010\0  ""H26WH\0 ""Phoenix";
+const char STR_SUBTYPE_FY326[] =      "\x05""Std\0 ""FY319";
+const char STR_SUBTYPE_HONTAI[] =     "\x07""Std\0   ""JJRC X1""X5C1\0  ""FQ_951";
+const char STR_SUBTYPE_AFHDS2A[] =    "\x08""PWM,IBUS""PPM,IBUS""PWM,SBUS""PPM,SBUS";
+const char STR_SUBTYPE_Q2X2[] =       "\x04""Q222""Q242""Q282";
+const char STR_SUBTYPE_WK2x01[] =     "\x06""WK2801""WK2401""W6_5_1""W6_6_1""W6_HeL""W6_HeI";
+const char STR_SUBTYPE_Q303[] =       "\x06""Std\0  ""CX35\0 ""CX10D\0""CX10WD";
+const char STR_SUBTYPE_CABELL[] =     "\x07""V3\0    ""V3 Telm""-\0     ""-\0     ""-\0     ""-\0     ""F-Safe\0""Unbind\0";
+const char STR_SUBTYPE_H83D[] =       "\x07""Std\0   ""H20H\0  ""H20Mini""H30Mini";
+const char STR_SUBTYPE_CORONA[] =     "\x05""V1\0  ""V2\0  ""FD V3";
+const char STR_SUBTYPE_HITEC[] =      "\x07""Optima\0""Opt Hub""Minima\0";
+const char STR_SUBTYPE_BUGS_MINI[] =  "\x06""Std\0  ""Bugs3H";
+const char STR_SUBTYPE_TRAXXAS[] =    "\x04""6519";
+const char STR_SUBTYPE_E01X[] =       "\x05""E012\0""E015\0""E016H";
+const char STR_SUBTYPE_GD00X[] =      "\x05""GD_V1""GD_V2";
+const char STR_SUBTYPE_REDPINE[] =    "\x04""Fast""Slow";
+const char STR_SUBTYPE_POTENSIC[] =   "\x03""A20";
+const char STR_SUBTYPE_ZSX[] =        "\x07""280JJRC";
+const char STR_SUBTYPE_FLYZONE[] =    "\x05""FZ410";
+const char STR_SUBTYPE_FX816[] =      "\x03""P38";
+const char STR_SUBTYPE_XN297DUMP[] =  "\x07""250Kbps""1Mbps\0 ""2Mbps\0 ""Auto\0  ";
+const char STR_SUBTYPE_ESKY150[] =    "\x03""4CH""7CH";
+const char STR_SUBTYPE_V911S[] =      "\x05""V911S""E119\0";
+const char STR_SUBTYPE_XK[] =         "\x04""X450""X420";
+const char STR_SUBTYPE_FRSKYR9[] =    "\x07""915MHz\0""868MHz\0""915 8ch""868 8ch";
+const char STR_SUBTYPE_ESKY[] =       "\x03""Std""ET4";
+const char STR_SUBTYPE_PROPEL[] =     "\x04""74-Z";
+const char STR_SUBTYPE_FRSKY_RX[] =   "\x07""RX\0    ""CloneTX";
+const char STR_SUBTYPE_FRSKYL[] =     "\x08""LR12\0   ""LR12 6ch";
+const char STR_SUBTYPE_WFLY[] =       "\x06""WFR0xS";
+
+enum
+{
+	OPTION_NONE,
+	OPTION_OPTION,
+	OPTION_RFTUNE,
+	OPTION_VIDFREQ,
+	OPTION_FIXEDID,
+	OPTION_TELEM,
+	OPTION_SRVFREQ,
+	OPTION_MAXTHR,
+	OPTION_RFCHAN
+};
+
+#define NO_SUBTYPE		nullptr
+
+const mm_protocol_definition multi_protocols[] = {
+// Protocol number, Protocol String, Number of sub_protocols, Sub_protocol strings, Option type
+	#if defined(ASSAN_NRF24L01_INO)
+		{PROTO_ASSAN,      STR_ASSAN,     0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(BAYANG_NRF24L01_INO)
+		{PROTO_BAYANG,     STR_BAYANG,    5, STR_SUBTYPE_BAYANG,    OPTION_TELEM   },
+	#endif
+	#if defined(BAYANG_RX_NRF24L01_INO)
+		{PROTO_BAYANG_RX,  STR_BAYANG_RX, 0, NO_SUBTYPE,            OPTION_NONE    },	
+	#endif
+	#if defined(BUGS_A7105_INO)
+		{PROTO_BUGS,       STR_BUGS,      0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(BUGSMINI_NRF24L01_INO)
+		{PROTO_BUGSMINI,   STR_BUGSMINI,  2, STR_SUBTYPE_BUGS_MINI, OPTION_NONE    },
+	#endif
+	#if defined(CABELL_NRF24L01_INO)
+		{PROTO_CABELL,     STR_CABELL,    8, STR_SUBTYPE_CABELL,    OPTION_OPTION  },
+	#endif
+	#if defined(CFLIE_NRF24L01_INO)
+		{PROTO_CFLIE,      STR_CFLIE,     0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(E01X_NRF24L01_INO)
+		{PROTO_E01X,       STR_E01X,      3, STR_SUBTYPE_E01X,      OPTION_OPTION  },
+	#endif
+	#if defined(CG023_NRF24L01_INO)
+		{PROTO_CG023,      STR_CG023,     2, STR_SUBTYPE_CG023,     OPTION_NONE    },
+	#endif
+	#if defined(CORONA_CC2500_INO)
+		{PROTO_CORONA,     STR_CORONA,    3, STR_SUBTYPE_CORONA,    OPTION_RFTUNE  },
+	#endif
+	#if defined(CX10_NRF24L01_INO)
+		{PROTO_CX10,       STR_CX10,      7, STR_SUBTYPE_CX10,      OPTION_NONE    },
+	#endif
+	#if defined(DEVO_CYRF6936_INO)
+		{PROTO_DEVO,       STR_DEVO,      5, STR_SUBTYPE_DEVO,      OPTION_FIXEDID },
+	#endif
+	#if defined(DM002_NRF24L01_INO)
+		{PROTO_DM002,      STR_DM002,     0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(DSM_CYRF6936_INO)
+		{PROTO_DSM,        STR_DSM,       4, STR_SUBTYPE_DSM,       OPTION_MAXTHR  },
+	#endif
+	#if defined(ESKY_NRF24L01_INO)
+		{PROTO_ESKY,       STR_ESKY,      2, STR_SUBTYPE_ESKY,      OPTION_NONE    },
+	#endif
+	#if defined(ESKY150_NRF24L01_INO)
+		{PROTO_ESKY150,    STR_ESKY150,   2, STR_SUBTYPE_ESKY150,   OPTION_NONE    },
+	#endif
+	#if defined(FLYSKY_A7105_INO)
+		{PROTO_FLYSKY,     STR_FLYSKY,    5, STR_SUBTYPE_FLYSKY,    OPTION_NONE    },
+	#endif
+	#if defined(AFHDS2A_A7105_INO)
+		{PROTO_AFHDS2A,    STR_AFHDS2A,   4, STR_SUBTYPE_AFHDS2A,   OPTION_SRVFREQ },
+	#endif
+	#if defined(AFHDS2A_RX_A7105_INO)
+		{PROTO_AFHDS2A_RX, STR_AFHDS2A_RX,0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(FLYZONE_A7105_INO)
+		{PROTO_FLYZONE,    STR_FLYZONE,   1, STR_SUBTYPE_FLYZONE,   OPTION_NONE    },
+	#endif
+	#if defined(FQ777_NRF24L01_INO)
+		{PROTO_FQ777,      STR_FQ777,     0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+//OpenTX 2.3.x issue: DO NOT CHANGE ORDER below
+	#if defined(FRSKY_RX_CC2500_INO)
+		{PROTO_FRSKY_RX,   STR_FRSKY_RX,  2, STR_SUBTYPE_FRSKY_RX,  OPTION_RFTUNE  },
+	#endif
+	#if defined(FRSKYD_CC2500_INO)
+		{PROTO_FRSKYD,     STR_FRSKYD,    2, STR_SUBTYPE_FRSKYD,    OPTION_RFTUNE  },
+	#endif
+	#if defined(FRSKYV_CC2500_INO)
+		{PROTO_FRSKYV,      STR_FRSKYV,   0, NO_SUBTYPE,            OPTION_RFTUNE  },
+	#endif
+	#if defined(FRSKYX_CC2500_INO)
+		{PROTO_FRSKYX,     STR_FRSKYX,    5, STR_SUBTYPE_FRSKYX,    OPTION_RFTUNE  },
+		{PROTO_FRSKYX2,    STR_FRSKYX2,   5, STR_SUBTYPE_FRSKYX,    OPTION_RFTUNE  },
+	#endif
+//OpenTX 2.3.x issue: DO NOT CHANGE ORDER above
+	#if defined(FRSKYL_CC2500_INO)
+		{PROTO_FRSKYL,     STR_FRSKYL,    2, STR_SUBTYPE_FRSKYL,    OPTION_RFTUNE  },
+	#endif
+	#if defined(FRSKYR9_SX1276_INO)
+		{PROTO_FRSKY_R9,   STR_FRSKYR9,   4, STR_SUBTYPE_FRSKYR9,   OPTION_NONE    },
+	#endif
+	#if defined(FX816_NRF24L01_INO)
+		{PROTO_FX816,      STR_FX816,     1, STR_SUBTYPE_FX816,     OPTION_NONE    },
+	#endif
+	#if defined(FY326_NRF24L01_INO)
+		{PROTO_FY326,      STR_FY326,     2, STR_SUBTYPE_FY326,     OPTION_NONE    },
+	#endif
+	#if defined(GD00X_NRF24L01_INO)
+		{PROTO_GD00X,      STR_GD00X,     2, STR_SUBTYPE_GD00X,     OPTION_RFTUNE  },
+	#endif
+	#if defined(GW008_NRF24L01_INO)
+		{PROTO_GW008,      STR_GW008,     0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(H8_3D_NRF24L01_INO)
+		{PROTO_H8_3D,      STR_H8_3D,     4, STR_SUBTYPE_H83D,      OPTION_NONE    },
+	#endif
+	#if defined(HISKY_NRF24L01_INO)
+		{PROTO_HISKY,      STR_HISKY,     2, STR_SUBTYPE_HISKY,     OPTION_NONE    },
+	#endif
+	#if defined(HITEC_CC2500_INO)
+		{PROTO_HITEC,      STR_HITEC,     3, STR_SUBTYPE_HITEC,     OPTION_RFTUNE  },
+	#endif
+	#if defined(HONTAI_NRF24L01_INO)
+		{PROTO_HONTAI,     STR_HONTAI,    4, STR_SUBTYPE_HONTAI,    OPTION_NONE    },
+	#endif
+	#if defined(HOTT_CC2500_INO)
+		{PROTO_HOTT,       STR_HOTT,      0, NO_SUBTYPE,            OPTION_RFTUNE  },
+	#endif
+	#if defined(HUBSAN_A7105_INO)
+		{PROTO_HUBSAN,     STR_HUBSAN,    3, STR_SUBTYPE_HUBSAN,    OPTION_VIDFREQ },
+	#endif
+	#if defined(J6PRO_CYRF6936_INO)
+		{PROTO_J6PRO,      STR_J6PRO,     0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(KF606_NRF24L01_INO)
+		{PROTO_KF606,      STR_KF606,     0, NO_SUBTYPE,            OPTION_RFTUNE  },
+	#endif
+	#if defined(KN_NRF24L01_INO)
+		{PROTO_KN,         STR_KN,        2, STR_SUBTYPE_KN,        OPTION_NONE    },
+	#endif
+	#if defined(MJXQ_NRF24L01_INO)
+		{PROTO_MJXQ,       STR_MJXQ,      7, STR_SUBTYPE_MJXQ,      OPTION_RFTUNE  },
+	#endif
+	#if defined(MT99XX_NRF24L01_INO)
+		{PROTO_MT99XX,     STR_MT99XX,    5, STR_SUBTYPE_MT99,      OPTION_NONE    },
+	#endif
+	#if defined(NCC1701_NRF24L01_INO)
+		{PROTO_NCC1701,    STR_NCC1701,   0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(PELIKAN_A7105_INO)
+		{PROTO_PELIKAN,    STR_PELIKAN  , 0, NO_SUBTYPE,            OPTION_NONE    },	
+	#endif
+	#if defined(POTENSIC_NRF24L01_INO)
+		{PROTO_POTENSIC,   STR_POTENSIC,  1, STR_SUBTYPE_POTENSIC,  OPTION_NONE    },
+	#endif
+	#if defined(PROPEL_NRF24L01_INO)
+		{PROTO_PROPEL,     STR_PROPEL,    4, STR_SUBTYPE_PROPEL,    OPTION_NONE    },
+	#endif
+	#if defined(CX10_NRF24L01_INO)
+		{PROTO_Q2X2,       STR_Q2X2,      3, STR_SUBTYPE_Q2X2,      OPTION_NONE    },
+	#endif
+	#if defined(Q303_NRF24L01_INO)
+		{PROTO_Q303,       STR_Q303,      4, STR_SUBTYPE_Q303,      OPTION_NONE    },
+	#endif
+	#if defined(REDPINE_CC2500_INO)
+		{PROTO_REDPINE,    STR_REDPINE,   2, STR_SUBTYPE_REDPINE,   OPTION_RFTUNE  },
+	#endif
+	#if defined(SCANNER_CC2500_INO)
+	//	{PROTO_SCANNER,    STR_SCANNER,   0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(SFHSS_CC2500_INO)
+		{PROTO_SFHSS,      STR_SFHSS,     0, NO_SUBTYPE,            OPTION_RFTUNE  },
+	#endif
+	#if defined(SHENQI_NRF24L01_INO)
+		{PROTO_SHENQI,     STR_SHENQI,    0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(SKYARTEC_CC2500_INO)
+		{PROTO_SKYARTEC,   STR_SKYARTEC,  0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(SLT_NRF24L01_INO)
+		{PROTO_SLT,        STR_SLT,       5, STR_SUBTYPE_SLT,       OPTION_RFTUNE  },
+	#endif
+	#if defined(SYMAX_NRF24L01_INO)
+		{PROTO_SYMAX,      STR_SYMAX,     2, STR_SUBTYPE_SYMAX,     OPTION_NONE    },
+	#endif
+	#if defined(TIGER_NRF24L01_INO)
+		{PROTO_TIGER,      STR_TIGER    , 0, NO_SUBTYPE,            OPTION_NONE    },	
+	#endif
+	#if defined(TRAXXAS_CYRF6936_INO)
+		{PROTO_TRAXXAS,    STR_TRAXXAS,   1, STR_SUBTYPE_TRAXXAS,   OPTION_NONE    },
+	#endif
+	#if defined(V2X2_NRF24L01_INO)
+		{PROTO_V2X2,       STR_V2X2,      2, STR_SUBTYPE_V2X2,      OPTION_NONE    },
+	#endif
+	#if defined(V761_NRF24L01_INO)
+		{PROTO_V761,       STR_V761,      0, NO_SUBTYPE,            OPTION_NONE    },
+	#endif
+	#if defined(V911S_NRF24L01_INO)
+		{PROTO_V911S,      STR_V911S,     2, STR_SUBTYPE_V911S,     OPTION_RFTUNE  },
+	#endif
+	#if defined(WFLY_CYRF6936_INO)
+		{PROTO_WFLY,       STR_WFLY,      1, STR_SUBTYPE_WFLY,      OPTION_NONE    },
+	#endif
+	#if defined(WK2x01_CYRF6936_INO)
+		{PROTO_WK2x01,     STR_WK2x01,    6, STR_SUBTYPE_WK2x01,    OPTION_NONE    },
+	#endif
+	#if defined(XK_NRF24L01_INO)
+		{PROTO_XK,         STR_XK       , 2, STR_SUBTYPE_XK,        OPTION_RFTUNE  },	
+	#endif
+	#if defined(XN297DUMP_NRF24L01_INO)
+		{PROTO_XN297DUMP,  STR_XN297DUMP, 4, STR_SUBTYPE_XN297DUMP, OPTION_RFCHAN  },
+	#endif
+	#if defined(YD717_NRF24L01_INO)
+		{PROTO_YD717,      STR_YD717,     5, STR_SUBTYPE_YD717,     OPTION_NONE    },
+	#endif
+	#if defined(ZSX_NRF24L01_INO)
+		{PROTO_ZSX,        STR_ZSX,       1, STR_SUBTYPE_ZSX,       OPTION_NONE    },
+	#endif
+		{0x00,             nullptr,       0, nullptr,               0 }
+};
+
+#endif

Multiprotocol/Multiprotocol.h

@@ -17,9 +17,9 @@
 // Version
 //******************
 #define VERSION_MAJOR		1
-#define VERSION_MINOR		2
-#define VERSION_REVISION	1
-#define VERSION_PATCH_LEVEL	85
+#define VERSION_MINOR		3
+#define VERSION_REVISION	0
+#define VERSION_PATCH_LEVEL	91
 
 //******************
 // Protocols
@@ -81,9 +81,20 @@ enum PROTOCOLS
 	PROTO_ZSX		= 52,	// =>NRF24L01
 	PROTO_FLYZONE	= 53,	// =>A7105
 	PROTO_SCANNER	= 54,	// =>CC2500
-	PROTO_FRSKYX_RX	= 55,	// =>CC2500
+	PROTO_FRSKY_RX	= 55,	// =>CC2500
 	PROTO_AFHDS2A_RX= 56,	// =>A7105
+	PROTO_HOTT		= 57,	// =>CC2500
+	PROTO_FX816		= 58,	// =>NRF24L01
+	PROTO_BAYANG_RX	= 59,	// =>NRF24L01
+	PROTO_PELIKAN	= 60,	// =>A7105
+	PROTO_TIGER		= 61,	// =>NRF24L01
+	PROTO_XK		= 62,	// =>NRF24L01
 	PROTO_XN297DUMP	= 63,	// =>NRF24L01
+	PROTO_FRSKYX2	= 64,	// =>CC2500
+	PROTO_FRSKY_R9	= 65,	// =>SX1276
+	PROTO_PROPEL	= 66,	// =>NRF24L01
+	PROTO_FRSKYL	= 67,	// =>CC2500
+	PROTO_SKYARTEC	= 68,	// =>CC2500
 };
 
 enum Flysky
@@ -199,12 +210,18 @@ enum MJXQ
 	H26WH	= 5,
 	PHOENIX = 6,
 };
+enum FRSKYD
+{
+	FRSKYD	= 0,
+	DCLONE	= 1,
+};
 enum FRSKYX
 {
 	CH_16	= 0,
 	CH_8	= 1,
 	EU_16	= 2,
 	EU_8	= 3,
+	XCLONE	= 4,
 };
 enum HONTAI
 {
@@ -290,10 +307,51 @@ enum TRAXXAS
 {
 	RX6519	= 0,
 };
-enum FRSKYX_RX
+enum ESKY150
 {
-	FRSKYX_FCC	= 0,
-	FRSKYX_LBT
+	ESKY150_4CH	= 0,
+	ESKY150_7CH	= 1,
+};
+enum V911S
+{
+	V911S_STD	= 0,
+	V911S_E119	= 1,
+};
+enum XK
+{
+	X450	= 0,
+	X420	= 1,
+};
+enum XN297DUMP
+{
+	XN297DUMP_250K	= 0,
+	XN297DUMP_1M	= 1,
+	XN297DUMP_2M	= 2,
+	XN297DUMP_AUTO	= 3,
+};
+enum FRSKY_R9
+{
+	R9_915		= 0,
+	R9_868		= 1,
+	R9_915_8CH	= 2,
+	R9_868_8CH	= 3,
+};
+enum ESKY
+{
+	ESKY_STD	= 0,
+	ESKY_ET4	= 1,
+};
+
+enum FRSKY_RX
+{
+	FRSKY_RX	= 0,
+	FRSKY_CLONE	= 1,
+};
+
+enum FRSKYL
+{
+	LR12		= 0,
+	LR12_6CH	= 1,
 };
 
 #define NONE 		0
@@ -304,17 +362,16 @@ enum FRSKYX_RX
 
 struct PPM_Parameters
 {
-	uint8_t protocol : 6;
-	uint8_t sub_proto : 3;
-	uint8_t rx_num : 4;
-	uint8_t power : 1;
-	uint8_t autobind : 1;
-	uint8_t option;
+	uint8_t protocol;
+	uint8_t sub_proto	: 3;
+	uint8_t rx_num		: 6;
+	uint8_t power		: 1;
+	uint8_t autobind	: 1;
+	int8_t option;
 	uint32_t chan_order;
 };
 
 // Telemetry
-
 enum MultiPacketTypes
 {
 	MULTI_TELEMETRY_STATUS			= 1,
@@ -323,18 +380,25 @@ enum MultiPacketTypes
 	MULTI_TELEMETRY_DSM				= 4,
 	MULTI_TELEMETRY_DSMBIND			= 5,
 	MULTI_TELEMETRY_AFHDS2A			= 6,
-	MULTI_TELEMETRY_CONFIG			= 7,
+	MULTI_TELEMETRY_REUSE_1			= 7,
 	MULTI_TELEMETRY_SYNC			= 8,
-	MULTI_TELEMETRY_SPORT_POLLING	= 9,
+	MULTI_TELEMETRY_REUSE_2			= 9,
 	MULTI_TELEMETRY_HITEC			= 10,
 	MULTI_TELEMETRY_SCANNER			= 11,
 	MULTI_TELEMETRY_AFHDS2A_AC		= 12,
 	MULTI_TELEMETRY_RX_CHANNELS		= 13,
+	MULTI_TELEMETRY_HOTT			= 14,
 };
 
 // Macros
 #define NOP() __asm__ __volatile__("nop")
 
+//***************
+//***  Tests  ***
+//***************
+#define IS_FAILSAFE_PROTOCOL	( (protocol==PROTO_HISKY && sub_protocol==HK310) || protocol==PROTO_AFHDS2A || protocol==PROTO_DEVO || protocol==PROTO_SFHSS || protocol==PROTO_WK2x01 || protocol== PROTO_HOTT || protocol==PROTO_FRSKYX || protocol==PROTO_FRSKYX2 )
+#define IS_CHMAP_PROTOCOL		( (protocol==PROTO_HISKY && sub_protocol==HK310) || protocol==PROTO_AFHDS2A || protocol==PROTO_DEVO || protocol==PROTO_SFHSS || protocol==PROTO_WK2x01 || protocol== PROTO_DSM || protocol==PROTO_SLT || protocol==PROTO_FLYSKY || protocol==PROTO_ESKY || protocol==PROTO_J6PRO || protocol==PROTO_PELIKAN  || protocol==PROTO_SKYARTEC )
+
 //***************
 //***  Flags  ***
 //***************
@@ -390,6 +454,7 @@ enum MultiPacketTypes
 #define TX_RX_PAUSE_on		protocol_flags2 |= _BV(4)
 #define IS_TX_RX_PAUSE_on	( ( protocol_flags2 & _BV(4) ) !=0 )
 #define IS_TX_PAUSE_on		( ( protocol_flags2 & (_BV(4)|_BV(3)) ) !=0 )
+#define IS_TX_PAUSE_off		( ( protocol_flags2 & (_BV(4)|_BV(3)) ) ==0 )
 //Signal OK
 #define INPUT_SIGNAL_off	protocol_flags2 &= ~_BV(5)
 #define INPUT_SIGNAL_on		protocol_flags2 |= _BV(5)
@@ -405,6 +470,24 @@ enum MultiPacketTypes
 #define WAIT_BIND_on		protocol_flags2 |= _BV(7)
 #define IS_WAIT_BIND_on		( ( protocol_flags2 & _BV(7) ) !=0 )
 #define IS_WAIT_BIND_off	( ( protocol_flags2 & _BV(7) ) ==0 )
+//Incoming telemetry data buffer
+#define DATA_BUFFER_LOW_off		protocol_flags3 &= ~_BV(0)
+#define DATA_BUFFER_LOW_on		protocol_flags3 |= _BV(0)
+#define IS_DATA_BUFFER_LOW_on	( ( protocol_flags3 & _BV(0) ) !=0 )
+#define IS_DATA_BUFFER_LOW_off	( ( protocol_flags3 & _BV(0) ) ==0 )
+#define SEND_MULTI_STATUS_off		protocol_flags3 &= ~_BV(1)
+#define SEND_MULTI_STATUS_on		protocol_flags3 |= _BV(1)
+#define IS_SEND_MULTI_STATUS_on		( ( protocol_flags3 & _BV(1) ) !=0 )
+#define IS_SEND_MULTI_STATUS_off	( ( protocol_flags3 & _BV(1) ) ==0 )
+#define DISABLE_CH_MAP_off		protocol_flags3 &= ~_BV(2)
+#define DISABLE_CH_MAP_on		protocol_flags3 |= _BV(2)
+#define IS_DISABLE_CH_MAP_on	( ( protocol_flags3 & _BV(2) ) !=0 )
+#define IS_DISABLE_CH_MAP_off	( ( protocol_flags3 & _BV(2) ) ==0 )
+#define DISABLE_TELEM_off		protocol_flags3 &= ~_BV(3)
+#define DISABLE_TELEM_on		protocol_flags3 |= _BV(3)
+#define IS_DISABLE_TELEM_on		( ( protocol_flags3 & _BV(3) ) !=0 )
+#define IS_DISABLE_TELEM_off	( ( protocol_flags3 & _BV(3) ) ==0 )
+
 
 // Failsafe
 #define FAILSAFE_CHANNEL_HOLD		2047
@@ -576,82 +659,101 @@ enum {
 #define AFHDS2A_EEPROM_OFFSET	50		// RX ID, 4 bytes per model id, end is 50+64=114
 #define BUGS_EEPROM_OFFSET		114		// RX ID, 2 bytes per model id, end is 114+32=146
 #define BUGSMINI_EEPROM_OFFSET	146		// RX ID, 2 bytes per model id, end is 146+32=178
-#define FRSKYX_RX_EEPROM_OFFSET	178		// (3) TX ID + (1) freq_tune + (47) channels, 51 bytes, end is 178+51=229
-#define AFHDS2A_RX_EEPROM_OFFSET 229	// (4) TX ID + (16) channels, 20 bytes, end is 229+20=249
-//#define CONFIG_EEPROM_OFFSET 	210		// Current configuration of the multimodule
+#define FRSKY_RX_EEPROM_OFFSET	178		// (1) format + (3) TX ID + (1) freq_tune + (47) channels, 52 bytes, end is 178+52=230
+#define AFHDS2A_RX_EEPROM_OFFSET 230	// (4) TX ID + (16) channels, 20 bytes, end is 230+20=250
+#define AFHDS2A_EEPROM_OFFSET2	250		// RX ID, 4 bytes per model id, end is 250+192=442
+#define HOTT_EEPROM_OFFSET		442		// RX ID, 5 bytes per model id, end is 320+442=762
+#define BAYANG_RX_EEPROM_OFFSET	762		// (5) TX ID + (4) channels, 9 bytes, end is 771 
+#define FRSKYD_CLONE_EEPROM_OFFSET	771	// (1) format + (3) TX ID + (47) channels, 51 bytes, end is 822
+#define FRSKYX_CLONE_EEPROM_OFFSET	822	// (1) format + (3) TX ID + (47) channels, 51 bytes, end is 873
+#define FRSKYX2_CLONE_EEPROM_OFFSET	873	// (1) format + (3) TX ID, 4 bytes, end is 877
+//#define CONFIG_EEPROM_OFFSET 	877		// Current configuration of the multimodule
 
 //****************************************
 //*** MULTI protocol serial definition ***
 //****************************************
 /*
-**************************
+***************************
 16 channels serial protocol
-**************************
+***************************
 Serial: 100000 Baud 8e2      _ xxxx xxxx p --
-  Total of 26 bytes
-  Stream[0]   = 0x55	sub_protocol values are 0..31	Stream contains channels
-  Stream[0]   = 0x54	sub_protocol values are 32..63	Stream contains channels
-  Stream[0]   = 0x57	sub_protocol values are 0..31	Stream contains failsafe
-  Stream[0]   = 0x56	sub_protocol values are 32..63	Stream contains failsafe
-   header
+  Total of 26 bytes for protocol V1, variable length 27..36 for protocol V2
+  Stream[0]   = header
+				0x55	sub_protocol values are 0..31	Stream contains channels
+				0x54	sub_protocol values are 32..63	Stream contains channels
+				0x57	sub_protocol values are 0..31	Stream contains failsafe
+				0x56	sub_protocol values are 32..63	Stream contains failsafe
   Stream[1]   = sub_protocol|BindBit|RangeCheckBit|AutoBindBit;
-   sub_protocol is 0..31 (bits 0..4), value should be added with 32 if Stream[0] = 0x54
-   =>	Reserved	0
-					Flysky		1
-					Hubsan		2
-					FrskyD		3
-					Hisky		4
-					V2x2		5
-					DSM			6
-					Devo		7
-					YD717		8
-					KN			9
-					SymaX		10
-					SLT			11
-					CX10		12
-					CG023		13
-					Bayang		14
-					FrskyX		15
-					ESky		16
-					MT99XX		17
-					MJXQ		18
-					SHENQI		19
-					FY326		20
-					SFHSS		21
-					J6PRO		22
-					FQ777		23
-					ASSAN		24
-					FrskyV		25
-					HONTAI		26
-					OpenLRS		27
-					AFHDS2A		28
-					Q2X2		29
-					WK2x01		30
-					Q303		31
-					GW008		32
-					DM002		33
-					CABELL		34
-					ESKY150		35
-					H8_3D		36
-					CORONA		37
-					CFlie		38
-					Hitec		39
-					WFLY		40
-					BUGS		41
-					BUGSMINI	42
-					TRAXXAS		43
-					NCC1701		44
-					E01X		45
-					V911S		46
-					GD00X		47
-					V761		48
-					KF606		49
-					REDPINE		50
-					POTENSIC	51
-					ZSX			52
-					FLYZONE		53
-					SCANNER		54
-					FRSKYX_RX	55
+   sub_protocol is 0..31 (bits 0..4), value should be added with 32 if Stream[0] = 0x54 | 0x56
+				Reserved	0
+				Flysky		1
+				Hubsan		2
+				FrskyD		3
+				Hisky		4
+				V2x2		5
+				DSM			6
+				Devo		7
+				YD717		8
+				KN			9
+				SymaX		10
+				SLT			11
+				CX10		12
+				CG023		13
+				Bayang		14
+				FrskyX		15
+				ESky		16
+				MT99XX		17
+				MJXQ		18
+				SHENQI		19
+				FY326		20
+				SFHSS		21
+				J6PRO		22
+				FQ777		23
+				ASSAN		24
+				FrskyV		25
+				HONTAI		26
+				OpenLRS		27
+				AFHDS2A		28
+				Q2X2		29
+				WK2x01		30
+				Q303		31
+				GW008		32
+				DM002		33
+				CABELL		34
+				ESKY150		35
+				H8_3D		36
+				CORONA		37
+				CFlie		38
+				Hitec		39
+				WFLY		40
+				BUGS		41
+				BUGSMINI	42
+				TRAXXAS		43
+				NCC1701		44
+				E01X		45
+				V911S		46
+				GD00X		47
+				V761		48
+				KF606		49
+				REDPINE		50
+				POTENSIC	51
+				ZSX			52
+				FLYZONE		53
+				SCANNER		54
+				FRSKY_RX	55
+				AFHDS2A_RX	56
+				HOTT		57
+				FX816		58
+				BAYANG_RX	59
+				PELIKAN		60
+				TIGER		61
+				XK			62
+				XN297DUMP	63
+				FRSKYX2		64
+				FRSKY_R9	65
+				PROPEL		66
+				FRSKYL		67
+				SKYARTEC	68
    BindBit=>		0x80	1=Bind/0=No
    AutoBindBit=>	0x40	1=Yes /0=No
    RangeCheck=>		0x20	1=Yes /0=No
@@ -724,11 +826,21 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 			E010		4
 			H26WH		5
 			PHOENIX		6
+		sub_protocol==FRSKYD
+			FRSKYD		0
+			DCLONE		1
 		sub_protocol==FRSKYX
 			CH_16		0
 			CH_8		1
 			EU_16		2
 			EU_8		3
+			XCLONE		4
+		sub_protocol==FRSKYX2
+			CH_16		0
+			CH_8		1
+			EU_16		2
+			EU_8		3
+			XCLONE		4
 		sub_protocol==HONTAI
 			HONTAI	0
 			JJRCX1	1
@@ -793,9 +905,29 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 			RED_SLOW	1
 		sub_protocol==TRAXXAS
 			RX6519		0
-		sub_protocol==FRSKYX_RX
-			FCC			0
-			LBT			1
+		sub_protocol==ESKY150
+			ESKY150_4CH	0
+			ESKY150_7CH	1
+		sub_protocol==V911S
+			V911S_STD	0
+			V911S_E119	1
+		sub_protocol==XK
+			X450		0
+			X420		1
+		sub_protocol==FRSKY_R9
+			R9_915		0
+			R9_868		1
+			R9_915_8CH	2
+			R9_868_8CH	3
+		sub_protocol==ESKY
+			ESKY_STD	0
+			ESKY_ET4	1
+		sub_protocol==FRSKY_RX
+			FRSKY_RX	0
+			FRSKY_CLONE	1
+		sub_protocol==FRSKYL
+			LR12		0
+			LR12_6CH	1
 
    Power value => 0x80	0=High/1=Low
   Stream[3]   = option_protocol;
@@ -810,6 +942,18 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
    Values are concatenated to fit in 22 bytes like in SBUS protocol.
    Failsafe values have exactly the same range/values than normal channels except the extremes where
       0=no pulse, 2047=hold. If failsafe is not set or RX then failsafe packets should not be sent.
+  Stream[26]   = sub_protocol bits 6 & 7|RxNum bits 4 & 5|Telemetry_Invert 3|Future_Use 2|Disable_Telemetry 1|Disable_CH_Mapping 0
+   sub_protocol is 0..255 (bits 0..5 + bits 6..7)
+   RxNum value is 0..63 (bits 0..3 + bits 4..5)
+   Telemetry_Invert		=> 0x08	0=normal, 1=invert
+   Future_Use			=> 0x04	0=      , 1=
+   Disable_Telemetry	=> 0x02	0=enable, 1=disable
+   Disable_CH_Mapping	=> 0x01	0=enable, 1=disable
+  Stream[27.. 35] = between 0 and 9 bytes for additional protocol data
+    Protocol specific use:
+      FrSkyX and FrSkyX2: Stream[27] during bind Telem on=0x00,off=0x01 | CH1-8=0x00,CH9-16=0x02
+      FrSkyX and FrSkyX2: Stream[27..34] during normal operation unstuffed SPort data to be sent
+	  HoTT: Stream[27] 1 byte for telemetry type
 */
 /*
   Multimodule Status
@@ -829,7 +973,9 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
    0x04 = Protocol is valid
    0x08 = Module is in binding mode
    0x10 = Module waits a bind event to load the protocol
-   0x20 = Failsafe supported by currently running protocol
+   0x20 = Current protocol supports failsafe
+   0x40 = Current protocol supports disable channel mapping
+   0x80 = Data buffer is almost full
    [3] major
    [4] minor
    [5] revision
@@ -863,19 +1009,37 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
    [4] Flags
    0x01 = Input signal detected
    0x02 = Serial mode enabled
-   0x04 = protocol is valid
-   0x08 = module is in binding mode
-   0x10 = module waits a bind event to load the protocol
-   0x20 = current protocol supports failsafe
+   0x04 = Protocol is valid
+   0x08 = Module is in binding mode
+   0x10 = Module waits a bind event to load the protocol
+   0x20 = Current protocol supports failsafe
+   0x40 = Current protocol supports disable channel mapping
+   0x80 = Data buffer is almost full
    [5] major
    [6] minor
    [7] revision
-   [8] patchlevel,
-   version of multi code, should be displayed as major.minor.revision.patchlevel
-
+   [8] patchlevel
+     version of multi code, should be displayed as major.minor.revision.patchlevel
+   [9] channel order: CH4|CH3|CH2|CH1 with CHx value A=0,E=1,T=2,R=3
+   [10] Next valid protocol number, can be used to skip invalid protocols
+   [11] Prev valid protocol number, can be used to skip invalid protocols
+   [12..18] Protocol name [7], not null terminated if prototcol len == 7
+   [19>>4] Option text to be displayed: 
+			OPTION_NONE		0
+			OPTION_OPTION	1
+			OPTION_RFTUNE	2
+			OPTION_VIDFREQ	3
+			OPTION_FIXEDID	4
+			OPTION_TELEM	5
+			OPTION_SRVFREQ	6
+			OPTION_MAXTHR	7
+			OPTION_RFCHAN	8
+   [19&0x0F] Number of sub protocols
+   [20..27] Sub protocol name [8], not null terminated if sub prototcol len == 8
+   If the current protocol is invalid [12..27] are all 0x00.
+   
    more information can be added by specifing a longer length of the type, the TX will just ignore these bytes
 
-
   Type 0x02 Frksy S.port telemetry
   Type 0x03 Frsky Hub telemetry
 
@@ -896,6 +1060,19 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
    data[0] = RSSI value
    data[1-28] telemetry data
 
+  Type 0x08 Input synchronisation
+    Informs the TX about desired rate and current delay
+    length: 4
+    data[0-1]     Desired refresh rate in ??s
+    data[2-3]     Time (??s) between last serial servo input received and servo input needed (lateness), TX should adjust its
+                  sending time to minimise this value.
+	data[4]		  Interval of this message in ms
+	data[5]		  Input delay target in 10??s
+   Note that there are protocols (AFHDS2A) that have a refresh rate that is smaller than the maximum achievable
+   refresh rate via the serial protocol, in this case, the TX should double the rate and also subract this
+   refresh rate from the input lag if the input lag is more than the desired refresh rate.
+   The remote should try to get to zero of  (inputdelay+target*10).
+
   Type 0x0A Hitec telemetry data
    length: 8
    data[0] = TX RSSI value
@@ -922,4 +1099,12 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
    data[3] = number of channels to follow
    data[4-]= packed channels data, 11 bit per channel
 
+  Type 0x0E HoTT telemetry
+   length: 14
+   data[0] = TX_RSSI
+   data[1] = TX_LQI
+   data[2] = type
+   data[3] = page
+   data[4-13] = data
+
 */

Multiprotocol/NCC1701_nrf24l01.ino

@@ -197,6 +197,9 @@ uint16_t NCC_callback()
 			phase = NCC_BIND_TX2;
 			return NCC_PACKET_INTERVAL - NCC_WRITE_WAIT;
 		case NCC_TX3:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(NCC_PACKET_INTERVAL);
+			#endif
 			if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))
 			{ // RX fifo data ready
 				NRF24L01_ReadPayload(packet, NCC_RX_PACKET_LEN);
@@ -268,9 +271,6 @@ uint16_t initNCC(void)
 	hopping_frequency_no=4;		// start with bind
 	NCC_init();
 	phase=NCC_BIND_TX1;
-	#ifdef NCC1701_HUB_TELEMETRY
-		init_frskyd_link_telemetry();
-	#endif
 	return 10000;
 }
 

Multiprotocol/NRF24l01_SPI.ino

@@ -172,6 +172,10 @@ void NRF24L01_SetPower()
 	if(prev_power != power)
 	{
 		rf_setup = (rf_setup & 0xF9) | (power << 1);
+		if(power==3)
+			rf_setup |=0x01;	// Si24r01 full power, unused bit for NRF
+		else
+			rf_setup &=0xFE;
 		NRF24L01_WriteReg(NRF24L01_06_RF_SETUP, rf_setup);
 		prev_power=power;
 	}
@@ -505,7 +509,7 @@ boolean XN297_ReadPayload(uint8_t* msg, uint8_t len)
 	//process address
 	for (uint8_t i = 0; i < xn297_addr_len; ++i)
 	{
-		uint8_t b_in=xn297_tx_addr[xn297_addr_len-i-1];
+		uint8_t b_in=xn297_rx_addr[xn297_addr_len-i-1];
 		if(xn297_scramble_enabled)
 			b_in ^=  xn297_scramble[i];
 		crc = crc16_update(crc, b_in, 8);
@@ -525,10 +529,13 @@ boolean XN297_ReadPayload(uint8_t* msg, uint8_t len)
 }
 
 uint8_t XN297_ReadEnhancedPayload(uint8_t* msg, uint8_t len)
-{
+{ //!!! Don't forget do a +2 and if using CRC add +2 on any of the used NRF24L01_11_RX_PW_Px !!!
 	uint8_t buffer[32];
 	uint8_t pcf_size; // pcf payload size
-	NRF24L01_ReadPayload(buffer, len+2); // pcf + payload
+	if (xn297_crc)
+		NRF24L01_ReadPayload(buffer, len+4);	// Read pcf + payload + CRC 
+	else
+		NRF24L01_ReadPayload(buffer, len+2);	// Read pcf + payload
 	pcf_size = buffer[0];
 	if(xn297_scramble_enabled)
 		pcf_size ^= xn297_scramble[xn297_addr_len];
@@ -540,7 +547,35 @@ uint8_t XN297_ReadEnhancedPayload(uint8_t* msg, uint8_t len)
 			msg[i] ^= bit_reverse((xn297_scramble[xn297_addr_len+i+1] << 2) | 
 									(xn297_scramble[xn297_addr_len+i+2] >> 6));
 	}
-	return pcf_size;
+
+	if (!xn297_crc)
+		return pcf_size;	// No CRC so OK by default...
+
+	// Calculate CRC
+	uint16_t crc = 0xb5d2;
+	//process address
+	for (uint8_t i = 0; i < xn297_addr_len; ++i)
+	{
+		uint8_t b_in=xn297_rx_addr[xn297_addr_len-i-1];
+		if(xn297_scramble_enabled)
+			b_in ^=  xn297_scramble[i];
+		crc = crc16_update(crc, b_in, 8);
+	}
+	//process payload
+	for (uint8_t i = 0; i < len+1; ++i)
+		crc = crc16_update(crc, buffer[i], 8);
+	crc = crc16_update(crc, buffer[len+1] & 0xc0, 2);
+	//xorout
+	if (xn297_scramble_enabled)
+		crc ^= pgm_read_word(&xn297_crc_xorout_scrambled_enhanced[xn297_addr_len-3+len]);
+#ifdef XN297DUMP_NRF24L01_INO
+	else
+		crc ^= pgm_read_word(&xn297_crc_xorout_enhanced[xn297_addr_len - 3 + len]);
+#endif
+	uint16_t crcxored=(buffer[len+1]<<10)|(buffer[len+2]<<2)|(buffer[len+3]>>6) ;
+	if( crc == crcxored)
+		return pcf_size;	// CRC  OK
+	return 0;				// CRC NOK
 }
  
  // End of XN297 emulation

Multiprotocol/NRF250K_EMU.ino

@@ -0,0 +1,438 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#ifdef NRF24L01_INSTALLED
+#include "iface_nrf250k.h"
+
+static void __attribute__((unused)) XN297L_Init()
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		debugln("Using NRF");
+		PE1_on;							//NRF24L01 antenna RF3 by default
+		PE2_off;						//NRF24L01 antenna RF3 by default
+		NRF24L01_Initialize();
+		NRF24L01_SetTxRxMode(TX_EN);
+		NRF24L01_FlushTx();
+		NRF24L01_FlushRx();
+		NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);	// Clear data ready, data sent, and retransmit
+		NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);		// No Auto Acknowldgement on all data pipes
+		NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);	// Enable data pipe 0 only
+		NRF24L01_SetBitrate(NRF24L01_BR_250K);			// 250Kbps
+		NRF24L01_SetPower();
+		return;
+	}
+	//CC2500
+	#ifdef CC2500_INSTALLED
+		debugln("Using CC2500");
+		PE1_off; // antenna RF2
+		PE2_on;
+		CC2500_Reset();
+		CC2500_Strobe(CC2500_SIDLE);
+
+		// Address Config = No address check
+		// Base Frequency = 2400
+		// CRC Autoflush = false
+		// CRC Enable = false
+		// Channel Spacing = 333.251953
+		// Data Format = Normal mode
+		// Data Rate = 249.939
+		// Deviation = 126.953125
+		// Device Address = 0
+		// Manchester Enable = false
+		// Modulated = true
+		// Modulation Format = GFSK
+		// Packet Length Mode = Variable packet length mode. Packet length configured by the first byte after sync word
+		// RX Filter BW = 203.125000
+		// Sync Word Qualifier Mode = No preamble/sync
+		// TX Power = 0
+		// Whitening = false
+		// Fast Frequency Hopping - no PLL auto calibration
+
+		CC2500_WriteReg(CC2500_08_PKTCTRL0,	0x01);   // Packet Automation Control
+		CC2500_WriteReg(CC2500_0B_FSCTRL1,	0x0A);   // Frequency Synthesizer Control
+		CC2500_WriteReg(CC2500_0C_FSCTRL0, option);  // Frequency offset hack 
+		CC2500_WriteReg(CC2500_0D_FREQ2,	0x5C);   // Frequency Control Word, High Byte
+		CC2500_WriteReg(CC2500_0E_FREQ1,	0x4E);   // Frequency Control Word, Middle Byte
+		CC2500_WriteReg(CC2500_0F_FREQ0,	0xC3);   // Frequency Control Word, Low Byte
+		CC2500_WriteReg(CC2500_10_MDMCFG4,	0x8D);   // Modem Configuration
+		CC2500_WriteReg(CC2500_11_MDMCFG3,	0x3B);   // Modem Configuration
+		CC2500_WriteReg(CC2500_12_MDMCFG2,	0x10);   // Modem Configuration
+		CC2500_WriteReg(CC2500_13_MDMCFG1,	0x23);   // Modem Configuration
+		CC2500_WriteReg(CC2500_14_MDMCFG0,	0xA4);   // Modem Configuration
+		CC2500_WriteReg(CC2500_15_DEVIATN,	0x62);   // Modem Deviation Setting
+		CC2500_WriteReg(CC2500_18_MCSM0,	0x08);   // Main Radio Control State Machine Configuration
+		CC2500_WriteReg(CC2500_19_FOCCFG,	0x1D);   // Frequency Offset Compensation Configuration
+		CC2500_WriteReg(CC2500_1A_BSCFG,	0x1C);   // Bit Synchronization Configuration
+		CC2500_WriteReg(CC2500_1B_AGCCTRL2, 0xC7);   // AGC Control
+		CC2500_WriteReg(CC2500_1C_AGCCTRL1, 0x00);   // AGC Control
+		CC2500_WriteReg(CC2500_1D_AGCCTRL0, 0xB0);   // AGC Control
+		CC2500_WriteReg(CC2500_21_FREND1,	0xB6);   // Front End RX Configuration
+		CC2500_WriteReg(CC2500_23_FSCAL3,	0xEA);   // Frequency Synthesizer Calibration
+		CC2500_WriteReg(CC2500_25_FSCAL1,	0x00);   // Frequency Synthesizer Calibration
+		CC2500_WriteReg(CC2500_26_FSCAL0,	0x11);   // Frequency Synthesizer Calibration
+
+		CC2500_SetTxRxMode(TX_EN);
+		CC2500_SetPower();
+		xn297_scramble_enabled=XN297_SCRAMBLED;	//enabled by default
+	#endif
+}
+
+static void __attribute__((unused)) XN297L_SetTXAddr(const uint8_t* addr, uint8_t len)
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		XN297_SetTXAddr(addr,len);
+		return;
+	}
+	//CC2500
+	#ifdef CC2500_INSTALLED
+		if (len > 5) len = 5;
+		if (len < 3) len = 3;
+		xn297_addr_len = len;
+		memcpy(xn297_tx_addr, addr, len);
+	#endif
+}
+
+static void __attribute__((unused)) XN297L_WritePayload(uint8_t* msg, uint8_t len)
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP));
+		NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
+		NRF24L01_FlushTx();
+		XN297_WritePayload(msg, len);
+		return;
+	}
+	//CC2500
+	#ifdef CC2500_INSTALLED
+		uint8_t buf[32];
+		uint8_t last = 0;
+		uint8_t i;
+		static const uint16_t initial = 0xb5d2;
+
+		// address
+		for (i = 0; i < xn297_addr_len; ++i)
+		{
+			buf[last] = xn297_tx_addr[xn297_addr_len - i - 1];
+			if(xn297_scramble_enabled)
+				buf[last] ^=  xn297_scramble[i];
+			last++;
+		}
+
+		// payload
+		for (i = 0; i < len; ++i) {
+			// bit-reverse bytes in packet
+			buf[last] = bit_reverse(msg[i]);
+			if(xn297_scramble_enabled)
+				buf[last] ^= xn297_scramble[xn297_addr_len+i];
+			last++;
+		}
+
+		// crc
+		uint16_t crc = initial;
+		for (uint8_t i = 0; i < last; ++i)
+			crc = crc16_update(crc, buf[i], 8);
+		if(xn297_scramble_enabled)
+			crc ^= pgm_read_word(&xn297_crc_xorout_scrambled[xn297_addr_len - 3 + len]);
+		else
+			crc ^= pgm_read_word(&xn297_crc_xorout[xn297_addr_len - 3 + len]);
+		buf[last++] = crc >> 8;
+		buf[last++] = crc & 0xff;
+
+		// stop TX/RX
+		CC2500_Strobe(CC2500_SIDLE);
+		// flush tx FIFO
+		CC2500_Strobe(CC2500_SFTX);
+		// packet length
+		CC2500_WriteReg(CC2500_3F_TXFIFO, last + 3);
+		// xn297L preamble
+		CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, (uint8_t*)"\x71\x0f\x55", 3);
+		// xn297 packet
+		CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, buf, last);
+		// transmit
+		CC2500_Strobe(CC2500_STX);
+	#endif
+}
+
+static void __attribute__((unused)) XN297L_WriteEnhancedPayload(uint8_t* msg, uint8_t len, uint8_t noack)
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP));
+		NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
+		NRF24L01_FlushTx();
+		XN297_WriteEnhancedPayload(msg, len, noack);
+		return;
+	}
+	//CC2500
+	#ifdef CC2500_INSTALLED
+		uint8_t buf[32];
+		uint8_t scramble_index=0;
+		uint8_t last = 0;
+		static uint8_t pid=0;
+
+		// address
+		if (xn297_addr_len < 4)
+		{
+			// If address length (which is defined by receive address length)
+			// is less than 4 the TX address can't fit the preamble, so the last
+			// byte goes here
+			buf[last++] = 0x55;
+		}
+		for (uint8_t i = 0; i < xn297_addr_len; ++i)
+		{
+			buf[last] = xn297_tx_addr[xn297_addr_len-i-1];
+			if(xn297_scramble_enabled)
+				buf[last] ^= xn297_scramble[scramble_index++];
+			last++;
+		}
+
+		// pcf
+		buf[last] = (len << 1) | (pid>>1);
+		if(xn297_scramble_enabled)
+			buf[last] ^= xn297_scramble[scramble_index++];
+		last++;
+		buf[last] = (pid << 7) | (noack << 6);
+
+		// payload
+		buf[last]|= bit_reverse(msg[0]) >> 2; // first 6 bit of payload
+		if(xn297_scramble_enabled)
+			buf[last] ^= xn297_scramble[scramble_index++];
+
+		for (uint8_t i = 0; i < len-1; ++i)
+		{
+			last++;
+			buf[last] = (bit_reverse(msg[i]) << 6) | (bit_reverse(msg[i+1]) >> 2);
+			if(xn297_scramble_enabled)
+				buf[last] ^= xn297_scramble[scramble_index++];
+		}
+
+		last++;
+		buf[last] = bit_reverse(msg[len-1]) << 6; // last 2 bit of payload
+		if(xn297_scramble_enabled)
+			buf[last] ^= xn297_scramble[scramble_index++] & 0xc0;
+
+		// crc
+		//if (xn297_crc)
+		{
+			uint8_t offset = xn297_addr_len < 4 ? 1 : 0;
+			uint16_t crc = 0xb5d2;
+			for (uint8_t i = offset; i < last; ++i)
+				crc = crc16_update(crc, buf[i], 8);
+			crc = crc16_update(crc, buf[last] & 0xc0, 2);
+			if (xn297_scramble_enabled)
+				crc ^= pgm_read_word(&xn297_crc_xorout_scrambled_enhanced[xn297_addr_len-3+len]);
+			//else
+			//	crc ^= pgm_read_word(&xn297_crc_xorout_enhanced[xn297_addr_len - 3 + len]);
+
+			buf[last++] |= (crc >> 8) >> 2;
+			buf[last++] = ((crc >> 8) << 6) | ((crc & 0xff) >> 2);
+			buf[last++] = (crc & 0xff) << 6;
+		}
+
+		pid++;
+		pid &= 3;
+
+		// stop TX/RX
+		CC2500_Strobe(CC2500_SIDLE);
+		// flush tx FIFO
+		CC2500_Strobe(CC2500_SFTX);
+		// packet length
+		CC2500_WriteReg(CC2500_3F_TXFIFO, last + 3);
+		// xn297L preamble
+		CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, (uint8_t*)"\x71\x0F\x55", 3);
+		// xn297 packet
+		CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, buf, last);
+		// transmit
+		CC2500_Strobe(CC2500_STX);
+	#endif
+}
+
+static void __attribute__((unused)) XN297L_HoppingCalib(uint8_t num_freq)
+{	//calibrate hopping frequencies
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+		return;		//NRF
+	#ifdef CC2500_INSTALLED
+		for (uint8_t i = 0; i < num_freq; i++)
+		{
+			CC2500_Strobe(CC2500_SIDLE);
+			CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[i]*3);
+			CC2500_Strobe(CC2500_SCAL);
+			delayMicroseconds(900);
+			calData[i]=CC2500_ReadReg(CC2500_25_FSCAL1);
+		}
+	#endif
+}
+
+static void __attribute__((unused)) XN297L_Hopping(uint8_t index)
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency[index]);
+		return;
+	}
+	#ifdef CC2500_INSTALLED
+		// spacing is 333.25 kHz, must multiply xn297 channel by 3
+		CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[index] * 3);
+		// set PLL calibration
+		CC2500_WriteReg(CC2500_25_FSCAL1, calData[index]);
+	#endif
+}
+
+static void __attribute__((unused)) XN297L_RFChannel(uint8_t number)
+{	//change channel
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		NRF24L01_WriteReg(NRF24L01_05_RF_CH, number);
+		return;
+	}
+	#ifdef CC2500_INSTALLED
+		CC2500_Strobe(CC2500_SIDLE);
+		CC2500_WriteReg(CC2500_0A_CHANNR, number*3);
+		CC2500_Strobe(CC2500_SCAL);
+		delayMicroseconds(900);
+	#endif
+}
+
+static void __attribute__((unused)) XN297L_SetPower()
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		NRF24L01_SetPower();
+		return;
+	}
+	#ifdef CC2500_INSTALLED
+		CC2500_SetPower();
+	#endif
+}
+
+static void __attribute__((unused)) XN297L_SetFreqOffset()
+{	// Frequency offset
+	#ifdef CC2500_INSTALLED
+	if(option==0 && prev_option==0)
+	#endif
+		return;		//NRF
+	#ifdef CC2500_INSTALLED
+		if (prev_option != option)
+		{
+			if(prev_option==0 || option==0)
+				CHANGE_PROTOCOL_FLAG_on;
+			prev_option = option;
+			CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+		}
+	#endif
+}
+
+static void __attribute__((unused)) NRF250K_SetTXAddr(uint8_t* addr, uint8_t len)
+{
+	if (len > 5) len = 5;
+	if (len < 3) len = 3;
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		NRF24L01_WriteReg(NRF24L01_03_SETUP_AW, len-2);
+		NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, addr, len);
+		return;
+	}
+	//CC2500
+	#ifdef CC2500_INSTALLED
+		xn297_addr_len = len;
+		memcpy(xn297_tx_addr, addr, len);
+	#endif
+}
+
+static void __attribute__((unused)) NRF250K_WritePayload(uint8_t* msg, uint8_t len)
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{//NRF
+		NRF24L01_FlushTx();
+		NRF24L01_WriteReg(NRF24L01_07_STATUS, _BV(NRF24L01_07_TX_DS) | _BV(NRF24L01_07_RX_DR) | _BV(NRF24L01_07_MAX_RT));
+		NRF24L01_WritePayload(msg, len);
+		return;
+	}
+	//CC2500
+	#ifdef CC2500_INSTALLED
+		uint8_t buf[35];
+		uint8_t last = 0;
+		uint8_t i;
+
+		//nrf preamble
+		if(xn297_tx_addr[xn297_addr_len - 1] & 0x80)
+			buf[0]=0xAA;
+		else
+			buf[0]=0x55;
+		last++;
+		// address
+		for (i = 0; i < xn297_addr_len; ++i)
+			buf[last++] = xn297_tx_addr[xn297_addr_len - i - 1];
+		// payload
+		for (i = 0; i < len; ++i)
+			buf[last++] = msg[i];
+
+		// crc
+		uint16_t crc = 0xffff;
+		for (uint8_t i = 1; i < last; ++i)
+			crc = crc16_update(crc, buf[i], 8);
+		buf[last++] = crc >> 8;
+		buf[last++] = crc & 0xff;
+		buf[last++] = 0;
+
+		//for(uint8_t i=0;i<last;i++)
+		//	debug("%02X ",buf[i]);
+		//debugln("");
+		// stop TX/RX
+		CC2500_Strobe(CC2500_SIDLE);
+		// flush tx FIFO
+		CC2500_Strobe(CC2500_SFTX);
+		// packet length
+		CC2500_WriteReg(CC2500_3F_TXFIFO, last);
+		// nrf packet
+		CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, buf, last);
+		// transmit
+		CC2500_Strobe(CC2500_STX);
+	#endif
+}
+
+static boolean __attribute__((unused)) NRF250K_IsPacketSent()
+{
+	#ifdef CC2500_INSTALLED
+	if(option==0)
+	#endif
+	{	//NRF
+		return NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_TX_DS);
+	}
+	return true;	// don't know on the CC2500 how to detect if the packet has been transmitted...
+}
+
+#endif

Multiprotocol/POTENSIC_nrf24l01.ino

@@ -109,6 +109,9 @@ uint16_t POTENSIC_callback()
 			BIND_DONE;
 			XN297_SetTXAddr(rx_tx_addr,5);
 		}
+	#ifdef MULTI_SYNC
+		telemetry_set_input_sync(POTENSIC_PACKET_PERIOD);
+	#endif
 	POTENSIC_send_packet();
 	return POTENSIC_PACKET_PERIOD;
 }

Multiprotocol/Pelikan_a7105.ino

@@ -0,0 +1,239 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+// Compatible with CADET PRO V4 TX
+
+#if defined(PELIKAN_A7105_INO)
+
+#include "iface_a7105.h"
+
+//#define PELIKAN_FORCE_ID
+
+#define PELIKAN_BIND_COUNT		400
+#define PELIKAN_BIND_RF			0x3C
+#define PELIKAN_NUM_RF_CHAN 	0x1D
+#define PELIKAN_PAQUET_PERIOD	7980
+
+static void __attribute__((unused)) pelikan_build_packet()
+{
+	static boolean upper=false;
+	packet[0] = 0x15;
+    if(IS_BIND_IN_PROGRESS)
+	{
+		packet[1] = 0x04;			//version??
+		packet[2] = rx_tx_addr[0];
+		packet[3] = rx_tx_addr[1];
+		packet[4] = rx_tx_addr[2];
+		packet[5] = rx_tx_addr[3];
+		packet[6] = 0x05;			//??
+		packet[7] = 0x00;			//??
+		packet[8] = 0x55;			//??
+		packet_length = 10;
+	}
+	else
+	{
+		//ID
+		packet[1]  = rx_tx_addr[0];
+		packet[7]  = rx_tx_addr[1];
+		packet[12] = rx_tx_addr[2];
+		packet[13] = rx_tx_addr[3];
+		//Channels
+		uint8_t offset=upper?4:0;
+		uint16_t channel=convert_channel_16b_nolimit(CH_AETR[offset++], 153, 871);
+		uint8_t top=(channel>>2) & 0xC0;
+		packet[2]  = channel;
+		channel=convert_channel_16b_nolimit(CH_AETR[offset++], 153, 871);
+		top|=(channel>>4) & 0x30;
+		packet[3]  = channel;
+		channel=convert_channel_16b_nolimit(CH_AETR[offset++], 153, 871);
+		top|=(channel>>6) & 0x0C;
+		packet[4]  = channel;
+		channel=convert_channel_16b_nolimit(CH_AETR[offset], 153, 871);
+		top|=(channel>>8) & 0x03;
+		packet[5]  = channel;
+		packet[6]  = top;
+		//Check
+		crc8=0x15;
+		for(uint8_t i=1;i<8;i++)
+			crc8+=packet[i];
+		packet[8]=crc8;
+		//Low/Up channel flag
+		packet[9]=upper?0xAA:0x00;
+		upper=!upper;
+		//Hopping counters
+		if(++packet_count>4)
+		{
+			packet_count=0;
+			if(++hopping_frequency_no>=PELIKAN_NUM_RF_CHAN)
+				hopping_frequency_no=0;
+		}
+		packet[10]=hopping_frequency_no;
+		packet[11]=packet_count;
+
+		packet_length = 15;
+	}
+
+	//Check
+	crc8=0x15;
+	for(uint8_t i=1; i<packet_length-1 ;i++)
+		crc8+=packet[i];
+	packet[packet_length-1]=crc8;
+
+	//Send
+	#ifdef DEBUG_SERIAL
+		if(packet[9]==0x00)
+		{
+			debug("C: %02X P(%d):",IS_BIND_IN_PROGRESS?PELIKAN_BIND_RF:hopping_frequency[hopping_frequency_no],packet_length);
+			for(uint8_t i=0;i<packet_length;i++)
+				debug(" %02X",packet[i]);
+			debugln("");
+		}
+	#endif
+	A7105_WriteData(packet_length, IS_BIND_IN_PROGRESS?PELIKAN_BIND_RF:hopping_frequency[hopping_frequency_no]);
+	A7105_SetPower();
+}
+
+uint16_t ReadPelikan()
+{
+	#ifndef FORCE_PELIKAN_TUNING
+		A7105_AdjustLOBaseFreq(1);
+	#endif
+	if(IS_BIND_IN_PROGRESS)
+	{
+		bind_counter--;
+		if (bind_counter==0)
+		{
+			BIND_DONE;
+			A7105_Strobe(A7105_STANDBY);
+			A7105_WriteReg(A7105_03_FIFOI,0x28);
+		}
+	}
+	#ifdef MULTI_SYNC
+		telemetry_set_input_sync(PELIKAN_PAQUET_PERIOD);
+	#endif
+	pelikan_build_packet();
+	return PELIKAN_PAQUET_PERIOD;
+}
+
+static uint8_t pelikan_firstCh(uint8_t u, uint8_t l)
+{
+	int16_t i;
+	i = u * 10 + l - 23;
+	do
+	{
+		if (i > 24)
+			i -= 24;
+		if (i <= 0)
+			return 10;
+		else if ((i > 0) && (i < 13))
+			return 10 + 12 + (i * 4);
+		else if ((i > 12) && (i < 24))
+			return 10 - 2 + ((i - 12) * 4);
+	}
+	while (i > 24);
+	return 0;
+}
+
+static uint8_t pelikan_adjust_value(uint8_t value, uint8_t addition, uint8_t limit)
+{
+	uint8_t i;
+	do
+	{
+		i = 0;
+		if (value > limit) {
+			value -= 62;
+			i++;
+		}
+		if (value == 24) {
+			value += addition;
+			i++;
+		}
+		if (value == 48) {
+			value += addition;
+			i++;
+		}
+	}
+	while (i > 0);
+
+	return value;
+}
+
+static uint8_t pelikan_add(uint8_t pfrq,uint8_t a, uint8_t limit)
+{
+	uint8_t nfrq;
+	nfrq = pfrq + a;
+
+	nfrq = pelikan_adjust_value(nfrq, a, limit);
+	
+	return nfrq;
+}
+
+static void __attribute__((unused)) pelikan_init_hop()
+{
+	#define PELIKAN_HOP_LIMIT 70
+	rx_tx_addr[0] = 0;
+	rx_tx_addr[1]+= RX_num;
+	uint8_t high = (rx_tx_addr[1]>>4) % 3;	// 0..2
+	uint8_t low = rx_tx_addr[1] & 0x0F;
+	if(high==2)
+		low %= 0x04;	// 0..3
+	else if(high)
+		low %= 0x0E;	// 0..D
+	else
+		low %= 0x0F;	// 0..E
+	rx_tx_addr[1] = (high<<4) + low;
+	uint8_t addition = (20 * high)+ (2 * low) + 8;
+
+	uint8_t first_channel = pelikan_firstCh(high, low);
+	first_channel = pelikan_adjust_value(first_channel, addition, PELIKAN_HOP_LIMIT);
+	hopping_frequency[0] = first_channel;
+	debug("%02X", first_channel);
+	for (uint8_t i = 1; i < PELIKAN_NUM_RF_CHAN; i++)
+	{
+		hopping_frequency[i] = pelikan_add(hopping_frequency[i-1], addition, PELIKAN_HOP_LIMIT);
+		debug(" %02X", hopping_frequency[i]);
+	}
+	debugln("");
+}
+
+#ifdef PELIKAN_FORCE_ID
+const uint8_t PROGMEM pelikan_hopp[][PELIKAN_NUM_RF_CHAN] = {
+	{ 0x5A,0x46,0x32,0x6E,0x6C,0x58,0x44,0x42,0x40,0x6A,0x56,0x54,0x52,0x3E,0x68,0x66,0x64,0x50,0x3C,0x3A,0x38,0x62,0x4E,0x4C,0x5E,0x4A,0x36,0x5C,0x34 }
+};
+#endif
+
+uint16_t initPelikan()
+{
+	A7105_Init();
+	if(IS_BIND_IN_PROGRESS)
+		A7105_WriteReg(A7105_03_FIFOI,0x10);
+	
+	//ID from dump
+	#ifdef PELIKAN_FORCE_ID
+		rx_tx_addr[0]=0x0D;		// hopping freq
+		rx_tx_addr[1]=0xF4;		// hopping freq
+		rx_tx_addr[2]=0x50;		// ID
+		rx_tx_addr[3]=0x18;		// ID
+		// Fill frequency table
+		for(uint8_t i=0;i<PELIKAN_NUM_RF_CHAN;i++)
+			hopping_frequency[i]=pgm_read_byte_near(&pelikan_hopp[0][i]);
+	#else
+		pelikan_init_hop();
+	#endif
+
+	hopping_frequency_no=PELIKAN_NUM_RF_CHAN;
+	packet_count=5;
+	return 2400;
+}
+#endif

Multiprotocol/Propel_nrf24l01.ino

@@ -0,0 +1,329 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+// Compatible with PROPEL 74-Z Speeder Bike.
+
+#if defined(PROPEL_NRF24L01_INO)
+
+#include "iface_nrf24l01.h"
+
+//#define PROPEL_FORCE_ID
+
+#define PROPEL_INITIAL_WAIT		500
+#define PROPEL_PACKET_PERIOD	10000
+#define PROPEL_BIND_RF_CHANNEL	0x23
+#define PROPEL_PAYLOAD_SIZE		16
+#define PROPEL_SEARCH_PERIOD	50	//*10ms
+#define PROPEL_BIND_PERIOD		1500
+#define PROPEL_PACKET_SIZE		14
+#define PROPEL_RF_NUM_CHANNELS	4
+#define PROPEL_ADDRESS_LENGTH	5
+#define PROPEL_DEFAULT_PERIOD	20
+
+enum {
+	PROPEL_BIND1 = 0,
+	PROPEL_BIND2,
+	PROPEL_BIND3,
+	PROPEL_DATA1,
+};
+
+static uint16_t __attribute__((unused)) PROPEL_checksum()
+{
+	typedef union {
+		struct {
+			uint8_t h:1;
+			uint8_t g:1;
+			uint8_t f:1;
+			uint8_t e:1;
+			uint8_t d:1;
+			uint8_t c:1;
+			uint8_t b:1;
+			uint8_t a:1;
+		} bits;
+		uint8_t byte:8;
+	} byte_bits_t;
+
+    uint8_t sum = packet[0];
+    for (uint8_t i = 1; i < PROPEL_PACKET_SIZE - 2; i++)
+        sum += packet[i];
+
+    byte_bits_t in  = { .byte = sum };
+    byte_bits_t out = { .byte = sum };
+	out.byte ^= 0x0a;
+    out.bits.d = !(in.bits.d ^ in.bits.h);
+    out.bits.c = (!in.bits.c && !in.bits.d &&  in.bits.g)
+              ||  (in.bits.c && !in.bits.d && !in.bits.g)
+              || (!in.bits.c &&  in.bits.g && !in.bits.h)
+              ||  (in.bits.c && !in.bits.g && !in.bits.h)
+              ||  (in.bits.c &&  in.bits.d &&  in.bits.g &&  in.bits.h)
+              || (!in.bits.c &&  in.bits.d && !in.bits.g &&  in.bits.h);
+    out.bits.b = (!in.bits.b && !in.bits.c && !in.bits.d)
+              ||  (in.bits.b &&  in.bits.c &&  in.bits.g)
+              || (!in.bits.b && !in.bits.c && !in.bits.g)
+              || (!in.bits.b && !in.bits.d && !in.bits.g)
+              || (!in.bits.b && !in.bits.c && !in.bits.h)
+              || (!in.bits.b && !in.bits.g && !in.bits.h)
+              ||  (in.bits.b &&  in.bits.c &&  in.bits.d &&  in.bits.h)
+              ||  (in.bits.b &&  in.bits.d &&  in.bits.g &&  in.bits.h);
+    out.bits.a =  (in.bits.a && !in.bits.b)
+              ||  (in.bits.a && !in.bits.c && !in.bits.d)
+              ||  (in.bits.a && !in.bits.c && !in.bits.g)
+              ||  (in.bits.a && !in.bits.d && !in.bits.g)
+              ||  (in.bits.a && !in.bits.c && !in.bits.h)
+              ||  (in.bits.a && !in.bits.g && !in.bits.h)
+              || (!in.bits.a &&  in.bits.b &&  in.bits.c &&  in.bits.g)
+              || (!in.bits.a &&  in.bits.b &&  in.bits.c &&  in.bits.d &&  in.bits.h)
+              || (!in.bits.a &&  in.bits.b &&  in.bits.d &&  in.bits.g &&  in.bits.h);
+
+    return (sum << 8) | (out.byte & 0xff);
+}
+
+static void __attribute__((unused)) PROPEL_bind_packet(bool valid_rx_id)
+{
+	memset(packet, 0, PROPEL_PACKET_SIZE);
+
+	packet[0] = 0xD0;
+	memcpy(&packet[1], rx_tx_addr, 4);  // only 4 bytes sent of 5-byte address
+	if (valid_rx_id) memcpy(&packet[5], rx_id, 4);
+	packet[9] = rf_ch_num;				// hopping table to be used when switching to normal mode
+	packet[11] = 0x05;					// unknown, 0x01 on TX2??
+
+	uint16_t check = PROPEL_checksum();
+	packet[12] = check >> 8;
+	packet[13] = check & 0xff;
+
+	NRF24L01_WriteReg(NRF24L01_07_STATUS, (_BV(NRF24L01_07_RX_DR) | _BV(NRF24L01_07_TX_DS) | _BV(NRF24L01_07_MAX_RT)));
+	NRF24L01_FlushTx();
+	NRF24L01_FlushRx();
+	NRF24L01_WritePayload(packet, PROPEL_PACKET_SIZE);
+}
+
+static void __attribute__((unused)) PROPEL_data_packet()
+{
+	memset(packet, 0, PROPEL_PACKET_SIZE);
+
+	packet[0] = 0xC0;
+	packet[1] = convert_channel_16b_limit(THROTTLE, 0x2f, 0xcf);
+	packet[2] = convert_channel_16b_limit(RUDDER  , 0xcf, 0x2f);
+	packet[3] = convert_channel_16b_limit(ELEVATOR, 0x2f, 0xcf);
+	packet[4] = convert_channel_16b_limit(AILERON , 0xcf, 0x2f);
+	packet[5] = 0x40;							//might be trims but unsused
+	packet[6] = 0x40;							//might be trims but unsused
+	packet[7] = 0x40;							//might be trims but unsused
+	packet[8] = 0x40;							//might be trims but unsused
+	if (bind_phase)
+	{//need to send a couple of default packets after bind
+		bind_phase--;
+		packet[10] = 0x80;	// LEDs
+	}
+	else
+	{
+		packet[9] = 0x02    					// Always fast speed, slow=0x00, medium=0x01, fast=0x02, 0x03=flight training mode
+					| GET_FLAG( CH14_SW, 0x03)	// Flight training mode
+					| GET_FLAG( CH10_SW, 0x04)	// Calibrate
+					| GET_FLAG( CH12_SW, 0x08)	// Take off
+					| GET_FLAG( CH8_SW,  0x10)	// Fire
+					| GET_FLAG( CH11_SW, 0x20)	// Altitude hold=0x20
+					| GET_FLAG( CH6_SW,  0x40)	// Roll CW
+					| GET_FLAG( CH7_SW,  0x80);	// Roll CCW
+		packet[10] =  GET_FLAG( CH13_SW, 0x20)	// Land
+					| GET_FLAG( CH9_SW,  0x40)	// Weapon system activted=0x40
+					| GET_FLAG(!CH5_SW,  0x80);	// LEDs
+	}
+	packet[11] = 5;								// unknown, 0x01 on TX2??
+
+	uint16_t check = PROPEL_checksum();
+	packet[12] = check >> 8;
+	packet[13] = check & 0xff;
+
+	NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency[hopping_frequency_no++]);
+	hopping_frequency_no &= 0x03;
+	NRF24L01_SetPower();
+	NRF24L01_WriteReg(NRF24L01_07_STATUS, (_BV(NRF24L01_07_RX_DR) | _BV(NRF24L01_07_TX_DS) | _BV(NRF24L01_07_MAX_RT)));
+	NRF24L01_FlushTx();
+	NRF24L01_WritePayload(packet, PROPEL_PACKET_SIZE);
+}
+
+static void __attribute__((unused)) PROPEL_init()
+{
+	NRF24L01_Initialize();
+	NRF24L01_WriteReg(NRF24L01_00_CONFIG, 0x7f);
+	NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x3f);       // AA on all pipes
+	NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x3f);   // Enable all pipes
+	NRF24L01_WriteReg(NRF24L01_03_SETUP_AW, 0x03);    // 5-byte address
+	NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0x36);  // retransmit 1ms, 6 times
+	NRF24L01_SetBitrate(NRF24L01_BR_1M);              // 1Mbps
+	NRF24L01_SetPower();
+	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x07);      // ?? match protocol capture
+	NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, (uint8_t *)"\x99\x77\x55\x33\x11", PROPEL_ADDRESS_LENGTH);	//Bind address
+	NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR,    (uint8_t *)"\x99\x77\x55\x33\x11", PROPEL_ADDRESS_LENGTH);	//Bind address
+	NRF24L01_WriteReg(NRF24L01_05_RF_CH, PROPEL_BIND_RF_CHANNEL);
+	NRF24L01_Activate(0x73);                          // Activate feature register
+	NRF24L01_WriteReg(NRF24L01_1C_DYNPD, 0x3f);       // Enable dynamic payload length
+	NRF24L01_WriteReg(NRF24L01_1D_FEATURE, 0x07);     // Enable all features
+	// Beken 2425 register bank 1 initialized here in stock tx capture
+	// Hopefully won't matter for nRF compatibility
+	NRF24L01_FlushTx();
+    NRF24L01_SetTxRxMode(TX_EN);
+}
+
+const uint8_t PROGMEM PROPEL_hopping []= { 0x47,0x36,0x27,0x44,0x33,0x0D,0x3C,0x2E,0x1B,0x39,0x2A,0x18 };
+static void __attribute__((unused)) PROPEL_initialize_txid()
+{
+	//address last byte
+	rx_tx_addr[4]=0x11;
+	
+	//random hopping channel table
+	rf_ch_num=random(0xfefefefe)&0x03;
+	for(uint8_t i=0; i<3; i++)
+		hopping_frequency[i]=pgm_read_byte_near( &PROPEL_hopping[i + 3*rf_ch_num] );
+	hopping_frequency[3]=0x23;
+
+#ifdef PROPEL_FORCE_ID
+	if(RX_num&1)
+		memcpy(rx_tx_addr, (uint8_t *)"\x73\xd3\x31\x30\x11", PROPEL_ADDRESS_LENGTH);	//TX1: 73 d3 31 30 11
+	else
+		memcpy(rx_tx_addr, (uint8_t *)"\x94\xc5\x31\x30\x11", PROPEL_ADDRESS_LENGTH);	//TX2: 94 c5 31 30 11
+	rf_ch_num = 0x03; //TX1
+	memcpy(hopping_frequency,(uint8_t *)"\x39\x2A\x18\x23",PROPEL_RF_NUM_CHANNELS);		//TX1: 57,42,24,35
+	rf_ch_num = 0x00; //TX2
+	memcpy(hopping_frequency,(uint8_t *)"\x47\x36\x27\x23",PROPEL_RF_NUM_CHANNELS); 	//TX2: 71,54,39,35
+	rf_ch_num = 0x01; // Manual search
+	memcpy(hopping_frequency,(uint8_t *)"\x44\x33\x0D\x23",PROPEL_RF_NUM_CHANNELS); 	//Manual: 68,51,13,35
+	rf_ch_num = 0x02; // Manual search
+	memcpy(hopping_frequency,(uint8_t *)"\x3C\x2E\x1B\x23",PROPEL_RF_NUM_CHANNELS); 	//Manual: 60,46,27,35
+#endif
+}
+
+uint16_t PROPEL_callback()
+{
+	uint8_t status;
+
+	switch (phase)
+	{
+		case PROPEL_BIND1:
+			PROPEL_bind_packet(false);		//rx_id unknown
+			phase++;						//BIND2
+			return PROPEL_BIND_PERIOD;
+
+		case PROPEL_BIND2:
+			status=NRF24L01_ReadReg(NRF24L01_07_STATUS);
+			if (status & _BV(NRF24L01_07_MAX_RT))
+			{// Max retry (6) reached
+				phase = PROPEL_BIND1;
+				return PROPEL_BIND_PERIOD;
+			}
+			if (!(_BV(NRF24L01_07_RX_DR) & status))
+				return PROPEL_BIND_PERIOD;		// nothing received
+			// received frame, got rx_id, save it
+			NRF24L01_ReadPayload(packet_in, PROPEL_PACKET_SIZE);
+			memcpy(rx_id, &packet_in[1], 4);
+			PROPEL_bind_packet(true);		//send bind packet with rx_id
+			phase++;						//BIND3
+			break;
+
+		case PROPEL_BIND3:
+			if (_BV(NRF24L01_07_RX_DR) & NRF24L01_ReadReg(NRF24L01_07_STATUS))
+			{
+				NRF24L01_ReadPayload(packet_in, PROPEL_PACKET_SIZE);
+				if (packet_in[0] == 0xa3 && memcmp(&packet_in[1],rx_id,4)==0)
+				{//confirmation from the model
+					phase++;				//PROPEL_DATA1
+					bind_phase=PROPEL_DEFAULT_PERIOD;
+					packet_count=0;
+					BIND_DONE;
+					break;
+				}
+			}
+			NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, rx_tx_addr, PROPEL_ADDRESS_LENGTH);
+			NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, rx_tx_addr, PROPEL_ADDRESS_LENGTH);
+			PROPEL_bind_packet(true);		//send bind packet with rx_id
+			break;
+
+		case PROPEL_DATA1:
+			if (_BV(NRF24L01_07_RX_DR) & NRF24L01_ReadReg(NRF24L01_07_STATUS))
+			{// data received from the model
+				NRF24L01_ReadPayload(packet_in, PROPEL_PACKET_SIZE);
+				if (packet_in[0] == 0xa3 && memcmp(&packet_in[1],rx_id,3)==0)
+				{
+					telemetry_counter++;	//LQI
+					v_lipo1=packet[5];		//number of life left?
+					v_lipo2=packet[4];		//bit mask: 0x80=flying, 0x08=taking off, 0x04=landing, 0x00=landed/crashed
+					if(telemetry_lost==0)
+						telemetry_link=1;
+				}
+			}
+			PROPEL_data_packet();
+			packet_count++;
+			if(packet_count>=100)
+			{//LQI calculation
+				packet_count=0;
+				TX_LQI=telemetry_counter;
+				RX_RSSI=telemetry_counter;
+				telemetry_counter = 0;
+				telemetry_lost=0;
+			}
+			break;
+	}
+	return PROPEL_PACKET_PERIOD;
+}
+
+uint16_t initPROPEL()
+{
+	BIND_IN_PROGRESS;	// autobind protocol
+	PROPEL_initialize_txid();
+	PROPEL_init();
+	hopping_frequency_no = 0;
+	phase=PROPEL_BIND1;
+	return PROPEL_INITIAL_WAIT;
+}
+
+#endif
+// equations for checksum check byte from truth table
+// (1)  z =  a && !b
+//       ||  a && !c && !d
+//       ||  a && !c && !g
+//       ||  a && !d && !g
+//       ||  a && !c && !h
+//       ||  a && !g && !h
+//       || !a &&  b &&  c &&  g
+//       || !a &&  b &&  c &&  d &&  h
+//       || !a &&  b &&  d &&  g &&  h;
+//
+// (2)  y = !b && !c && !d
+//       ||  b &&  c &&  g
+//       || !b && !c && !g
+//       || !b && !d && !g
+//       || !b && !c && !h
+//       || !b && !g && !h
+//       ||  b &&  c &&  d &&  h
+//       ||  b &&  d &&  g &&  h;
+//
+// (3)  x = !c && !d &&  g
+//       ||  c && !d && !g
+//       || !c &&  g && !h
+//       ||  c && !g && !h
+//       ||  c &&  d &&  g &&  h
+//       || !c &&  d && !g &&  h;
+//
+// (4)  w =  d &&  h
+//       || !d && !h;
+//
+// (5)  v = !e;
+//
+// (6)  u =  f;
+//
+// (7)  t = !g;
+//
+// (8)  s =  h;

Multiprotocol/Q303_nrf24l01.ino

@@ -354,7 +354,12 @@ static void __attribute__((unused)) Q303_initialize_txid()
 uint16_t Q303_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(packet_period);
+		#endif
 		Q303_send_packet(0);
+	}
 	else
 	{
 		if (bind_counter == 0)

Multiprotocol/Redpine_cc2500.ino

@@ -17,10 +17,10 @@
 
 #include "iface_cc2500.h"
 
-#define REDPINE_LOOPTIME_FAST 25	//2.5ms
-#define REDPINE_LOOPTIME_SLOW 6  	//6ms
+#define REDPINE_LOOPTIME_FAST 20	//2.0ms
+#define REDPINE_LOOPTIME_SLOW 20  	//20ms
 
-#define REDPINE_BIND 1000
+#define REDPINE_BIND 2000
 #define REDPINE_PACKET_SIZE 11
 #define REDPINE_FEC false  // from cc2500 datasheet: The convolutional coder is a rate 1/2 code with a constraint length of m=4
 #define REDPINE_NUM_HOPS 50
@@ -105,10 +105,9 @@ static uint16_t ReadREDPINE()
 	}
 	if(IS_BIND_IN_PROGRESS)
 	{
-		if(bind_counter == REDPINE_BIND)
-			REDPINE_init(0);
-		if(bind_counter == REDPINE_BIND/2)
-			REDPINE_init(1);
+        if (state == REDPINE_BIND) {
+    		REDPINE_init(0);
+        }
 		REDPINE_set_channel(49);
         CC2500_SetTxRxMode(TX_EN);
 		CC2500_SetPower();
@@ -121,10 +120,13 @@ static uint16_t ReadREDPINE()
 			BIND_DONE;
 			REDPINE_init(sub_protocol);
 		}
-		return 9000;
+		return 4000;
 	}
 	else
 	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(packet_period);
+		#endif
 		CC2500_SetTxRxMode(TX_EN);
 		REDPINE_set_channel(hopping_frequency_no);
 		CC2500_SetPower();
@@ -133,10 +135,7 @@ static uint16_t ReadREDPINE()
 		CC2500_Strobe(CC2500_SIDLE);
 		hopping_frequency_no = (hopping_frequency_no + 1) % 49;
 		CC2500_WriteData(packet, REDPINE_PACKET_SIZE);
-		if (sub_protocol==0)
-			return REDPINE_LOOPTIME_FAST*100;
-		else
-			return REDPINE_LOOPTIME_SLOW*1000;
+		return packet_period;
 	}
 	return 1;
 }
@@ -149,23 +148,19 @@ static const uint8_t REDPINE_init_data[][3] = {
     {CC2500_07_PKTCTRL1,  0x04, 0x04},
     {CC2500_08_PKTCTRL0,  0x05, 0x05},
     {CC2500_09_ADDR,      0x00, 0x00},
-    {CC2500_0B_FSCTRL1,   0x0A, 0x0A},
+    {CC2500_0B_FSCTRL1,   0x0A, 0x06},
     {CC2500_0C_FSCTRL0,   0x00, 0x00},
-    {CC2500_0D_FREQ2,     0x5D, 0x5c},
-    {CC2500_0E_FREQ1,     0x93, 0x76},
-    {CC2500_0F_FREQ0,     0xB1, 0x27},
-    {CC2500_10_MDMCFG4,   0x2D, 0x7B},
-    {CC2500_11_MDMCFG3,   0x3B, 0x61},
-    {CC2500_12_MDMCFG2,   0x73, 0x13},
-    #ifdef REDPINE_FEC    
-        {CC2500_13_MDMCFG1,   0xA3, 0xA3},
-    #else
-        {CC2500_13_MDMCFG1,   0x23, 0x23},
-    #endif
-    {CC2500_14_MDMCFG0,   0x56, 0x7a},  // Chan space
-    {CC2500_15_DEVIATN,   0x00, 0x51},
+    {CC2500_0D_FREQ2,     0x5D, 0x5D},
+    {CC2500_0E_FREQ1,     0x93, 0x93},
+    {CC2500_0F_FREQ0,     0xB1, 0xB1},
+    {CC2500_10_MDMCFG4,   0x2D, 0x78},
+    {CC2500_11_MDMCFG3,   0x3B, 0x93},
+    {CC2500_12_MDMCFG2,   0x73, 0x03},
+    {CC2500_13_MDMCFG1,   0x23, 0x22},
+    {CC2500_14_MDMCFG0,   0x56, 0xF8},  // Chan space
+    {CC2500_15_DEVIATN,   0x00, 0x44},
     {CC2500_17_MCSM1,     0x0c, 0x0c},
-    {CC2500_18_MCSM0,     0x08, 0x08}, //??? 0x18, 0x18},
+    {CC2500_18_MCSM0,     0x18, 0x18},
     {CC2500_19_FOCCFG,    0x1D, 0x16},
     {CC2500_1A_BSCFG,     0x1C, 0x6c},
     {CC2500_1B_AGCCTRL2,  0xC7, 0x43},
@@ -181,7 +176,7 @@ static const uint8_t REDPINE_init_data[][3] = {
     {CC2500_2C_TEST2,     0x88, 0x88},
     {CC2500_2D_TEST1,     0x31, 0x31},
     {CC2500_2E_TEST0,     0x0B, 0x0B},
-    {CC2500_3E_PATABLE,   0xff, 0xff}
+	{CC2500_3E_PATABLE,   0xff, 0xff}
 };
 
 static void REDPINE_init(uint8_t format)
@@ -190,8 +185,9 @@ static void REDPINE_init(uint8_t format)
 
 	CC2500_WriteReg(CC2500_06_PKTLEN, REDPINE_PACKET_SIZE);
 
-	for (uint8_t i=0; i < ((sizeof REDPINE_init_data) / (sizeof REDPINE_init_data[0])); i++)
+	for (uint8_t i=0; i < ((sizeof(REDPINE_init_data)) / (sizeof(REDPINE_init_data[0]))); i++) {
 		CC2500_WriteReg(REDPINE_init_data[i][0], REDPINE_init_data[i][format+1]);
+	}
 
 	prev_option = option;
 	CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
@@ -215,7 +211,6 @@ static uint16_t initREDPINE()
 	uint32_t idx = 0;
 	uint32_t rnd = MProtocol_id;
 	#define REDPINE_MAX_RF_CHANNEL 255
-	hopping_frequency[idx++] = 1;
 	while (idx < REDPINE_NUM_HOPS-1)
 	{
 		uint32_t i;
@@ -226,8 +221,9 @@ static uint16_t initREDPINE()
 		for (i = 0; i < idx; i++)
 		{
 			uint8_t ch = hopping_frequency[i];
-			if ((ch <= next_ch + 1) && (ch >= next_ch - 1) && (ch > 1))
-				break;
+            if ((ch <= next_ch + 1) && (ch >= next_ch - 1) && (ch >= 1)) {
+                break;
+            }
 		}
 		if (i != idx)
 			continue;
@@ -235,6 +231,11 @@ static uint16_t initREDPINE()
 	}
 	hopping_frequency[49] = 0;  // Last channel is the bind channel at hop 0
 
+	if (sub_protocol==0)
+		packet_period = REDPINE_LOOPTIME_FAST*100;
+	else
+		packet_period = REDPINE_LOOPTIME_SLOW*1000;
+
 	bind_counter=REDPINE_BIND;
 	REDPINE_init(sub_protocol);
 	CC2500_SetTxRxMode(TX_EN);  // enable PA

Multiprotocol/SFHSS_cc2500.ino

@@ -173,8 +173,8 @@ static void __attribute__((unused)) SFHSS_build_data_packet()
 				else
 				{ //Use channel value
 					ch[i]=(ch[i]>>1)+2560;
-					if(CH_AETR[ch_offset+i]==THROTTLE && ch[i]<3072)		// Throttle
-						ch[i]+=1024;
+					//if(IS_DISABLE_CH_MAP_off && ch_offset+i==CH3 && ch[i]<3072)		// Throttle
+					//	ch[i]+=1024;
 				}
 			}
 		}
@@ -235,6 +235,9 @@ uint16_t ReadSFHSS()
 #define SFHSS_PACKET_PERIOD	6800
 #define SFHSS_DATA2_TIMING	1625	// Adjust this value between 1600 and 1650 if your RX(s) are not operating properly
 		case SFHSS_DATA1:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(6800);
+			#endif
 			SFHSS_build_data_packet();
 			SFHSS_send_packet();
 			phase = SFHSS_DATA2;

Multiprotocol/SHENQI_nrf24l01.ino

@@ -63,6 +63,10 @@ void SHENQI_send_packet()
 	}
 	else
 	{
+		#ifdef MULTI_SYNC
+			if(packet_count==1)
+				telemetry_set_input_sync(3000+2508+6*1750);
+		#endif
 		LT8900_SetAddress(rx_tx_addr,4);
 		packet[1]=255-convert_channel_8b(RUDDER);
 		packet[2]=255-convert_channel_16b_limit(THROTTLE,0x60,0xA0);
@@ -91,7 +95,9 @@ void SHENQI_send_packet()
 uint16_t SHENQI_callback()
 {
 	if(IS_BIND_DONE)
+	{
 		SHENQI_send_packet();
+	}
 	else
 	{
 		if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))

Multiprotocol/SLT_nrf24l01.ino

@@ -16,7 +16,7 @@
 
 #if defined(SLT_NRF24L01_INO)
 
-#include "iface_nrf24l01.h"
+#include "iface_nrf250k.h"
 
 //#define SLT_Q200_FORCE_ID
 
@@ -25,6 +25,7 @@
 #define SLT_PAYLOADSIZE_V2 11
 #define SLT_NFREQCHANNELS 15
 #define SLT_TXID_SIZE 4
+#define SLT_BIND_CHANNEL 0x50
 
 enum{
 	// flags going to packet[6] (Q200)
@@ -48,30 +49,13 @@ enum {
 	SLT_DATA2,
 	SLT_DATA3,
 	SLT_BIND1,
-	SLT_BIND2
+	SLT_BIND2,
 };
 
 static void __attribute__((unused)) SLT_init()
 {
-	NRF24L01_Initialize();
-	NRF24L01_WriteReg(NRF24L01_00_CONFIG, _BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO)); // 2-bytes CRC, radio off
-	NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);			// No Auto Acknoledgement
-	NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);		// Enable data pipe 0
-	NRF24L01_WriteReg(NRF24L01_03_SETUP_AW, 0x02);		// 4-byte RX/TX address
-	NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0x00);	// Disable auto retransmit
-	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);		// Clear data ready, data sent, and retransmit
-	NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, 4);			// bytes of data payload for pipe 1
-	NRF24L01_SetBitrate(NRF24L01_BR_250K);          	// 256kbps
-	NRF24L01_SetPower();
-	if(sub_protocol==SLT_V1)
-		NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, (uint8_t*)"\xC3\xC3\xAA\x55", SLT_TXID_SIZE);
-	else // V2
-		NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, (uint8_t*)"\x7E\xB8\x63\xA9", SLT_TXID_SIZE);
-	NRF24L01_FlushRx();
-	NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, rx_tx_addr, SLT_TXID_SIZE);
-	NRF24L01_FlushTx();
-	// Turn radio power on
-	NRF24L01_SetTxRxMode(TX_EN);
+	NRF250K_Init();
+	NRF250K_SetTXAddr(rx_tx_addr, SLT_TXID_SIZE);
 }
 
 static void __attribute__((unused)) SLT_set_freq(void)
@@ -109,21 +93,25 @@ static void __attribute__((unused)) SLT_set_freq(void)
 				}
 		}
 	}
+	
+	//Bind channel
+	hopping_frequency[SLT_NFREQCHANNELS]=SLT_BIND_CHANNEL;
+	
+	//Calib all channels
+	NRF250K_HoppingCalib(SLT_NFREQCHANNELS+1);
 }
 
 static void __attribute__((unused)) SLT_wait_radio()
 {
 	if (packet_sent)
-		while (!(NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_TX_DS)));
+		while (!NRF250K_IsPacketSent());
 	packet_sent = 0;
 }
 
 static void __attribute__((unused)) SLT_send_packet(uint8_t len)
 {
 	SLT_wait_radio();
-	NRF24L01_FlushTx();
-	NRF24L01_WriteReg(NRF24L01_07_STATUS, _BV(NRF24L01_07_TX_DS) | _BV(NRF24L01_07_RX_DR) | _BV(NRF24L01_07_MAX_RT));
-	NRF24L01_WritePayload(packet, len);
+	NRF250K_WritePayload(packet, len);
 	packet_sent = 1;
 }
 
@@ -132,7 +120,8 @@ static void __attribute__((unused)) SLT_build_packet()
 	static uint8_t calib_counter=0;
 	
 	// Set radio channel - once per packet batch
-	NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency[hopping_frequency_no]);
+	NRF250K_SetFreqOffset();	// Set frequency offset
+	NRF250K_Hopping(hopping_frequency_no);
 	if (++hopping_frequency_no >= SLT_NFREQCHANNELS)
 		hopping_frequency_no = 0;
 
@@ -141,7 +130,7 @@ static void __attribute__((unused)) SLT_build_packet()
 	for (uint8_t i = 0; i < 4; ++i)
 	{
 		uint16_t v = convert_channel_10b(CH_AETR[i]);
-		if(sub_protocol>SLT_V2 && (CH_AETR[i]==THROTTLE || CH_AETR[i]==ELEVATOR) )
+		if(sub_protocol>SLT_V2 && (i==CH2 || i==CH3) )
 			v=1023-v;	// reverse throttle and elevator channels for Q100/Q200/MR100 protocols
 		packet[i] = v;
 		e = (e >> 2) | (uint8_t) ((v >> 2) & 0xC0);
@@ -183,23 +172,16 @@ static void __attribute__((unused)) SLT_build_packet()
 static void __attribute__((unused)) SLT_send_bind_packet()
 {
 	SLT_wait_radio();
-	BIND_IN_PROGRESS;				//Limit TX power to bind level
-	NRF24L01_SetPower();
+	NRF250K_Hopping(SLT_NFREQCHANNELS);	//Bind channel
+	BIND_IN_PROGRESS;					//Limit TX power to bind level
+	NRF250K_SetPower();
 	BIND_DONE;
-	NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, (uint8_t *)"\x7E\xB8\x63\xA9", SLT_TXID_SIZE);
-
-	NRF24L01_WriteReg(NRF24L01_05_RF_CH, 0x50);
+	NRF250K_SetTXAddr((uint8_t *)"\x7E\xB8\x63\xA9", SLT_TXID_SIZE);
 	memcpy((void*)packet,(void*)rx_tx_addr,SLT_TXID_SIZE);
 	if(phase==SLT_BIND2)
 		SLT_send_packet(SLT_TXID_SIZE);
 	else // SLT_BIND1
 		SLT_send_packet(SLT_PAYLOADSIZE_V2);
-
-	SLT_wait_radio();				//Wait until the packet's sent before changing TX address!
-
-	NRF24L01_SetPower();			//Change power back to normal level
-	if(phase==SLT_BIND2) // after V1 bind and V2 second bind packet
-		NRF24L01_WriteRegisterMulti(NRF24L01_10_TX_ADDR, rx_tx_addr, SLT_TXID_SIZE);
 }
 
 #define SLT_TIMING_BUILD		1000
@@ -213,7 +195,12 @@ uint16_t SLT_callback()
 	switch (phase)
 	{
 		case SLT_BUILD:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(sub_protocol==SLT_V1?20000:13730);
+			#endif
 			SLT_build_packet();
+			NRF250K_SetPower();					//Change power level
+			NRF250K_SetTXAddr(rx_tx_addr, SLT_TXID_SIZE);
 			phase++;
 			return SLT_TIMING_BUILD;
 		case SLT_DATA1:
@@ -250,7 +237,6 @@ uint16_t SLT_callback()
 			}
 			else
 			{// Continue to send normal packets
-				NRF24L01_SetPower();	// Set tx_power
 				phase = SLT_BUILD;
 				if(sub_protocol==SLT_V1)
 					return 20000-SLT_TIMING_BUILD;
@@ -286,8 +272,8 @@ uint16_t initSLT()
 		/*	rx_tx_addr[0]=0x01;rx_tx_addr[1]=0x02;rx_tx_addr[2]=0x0B;rx_tx_addr[3]=0x57;*/
 		#endif
 	}
-	SLT_set_freq();
 	SLT_init();
+	SLT_set_freq();
 	phase = SLT_BUILD;
 	return 50000;
 }

Multiprotocol/SX1276_SPI.ino

@@ -0,0 +1,177 @@
+#ifdef SX1276_INSTALLED
+#include "iface_sx1276.h"
+
+void SX1276_WriteReg(uint8_t address, uint8_t data)
+{
+	SPI_CSN_off;
+	SPI_Write(address | 0x80); // MSB 1 = write
+	NOP();
+	SPI_Write(data);
+	SPI_CSN_on;
+}
+
+uint8_t SX1276_ReadReg(uint8_t address)
+{ 
+	SPI_CSN_off;
+	SPI_Write(address & 0x7F);
+	uint8_t result = SPI_Read();  
+	SPI_CSN_on;
+
+	return result;
+}
+
+void SX1276_WriteRegisterMulti(uint8_t address, const uint8_t* data, uint8_t length)
+{
+	SPI_CSN_off;
+	SPI_Write(address | 0x80); // MSB 1 = write
+
+	for(uint8_t i = 0; i < length; i++)
+		SPI_Write(data[i]);
+
+	SPI_CSN_on;
+}
+
+uint8_t SX1276_Reset()
+{
+	//TODO
+
+    return 0;
+}
+
+void SX1276_SetFrequency(uint32_t frequency)
+{
+	uint32_t f = frequency / 61;
+	uint8_t data[3];
+	data[0] = (f & (0xFF << 16)) >> 16;
+	data[1] = (f & (0xFF << 8)) >> 8;
+	data[2] = f & 0xFF;
+	
+	SX1276_WriteRegisterMulti(SX1276_06_FRFMSB, data, 3);
+}
+
+void SX1276_SetMode(bool lora, bool low_freq_mode, uint8_t mode)
+{
+	uint8_t data = 0x00;
+
+	if(lora)
+	{
+		data = data | (1 << 7);
+		data = data & ~(1 << 6);
+	}
+	else
+	{
+		data = data & ~(1 << 7);
+		data = data | (1 << 6);
+	}
+
+	if(low_freq_mode)
+		data = data | (1 << 3);
+	
+	data = data | mode;
+
+	SX1276_WriteReg(SX1276_01_OPMODE, data);
+}
+
+void SX1276_SetDetectOptimize(bool auto_if, uint8_t detect_optimize)
+{
+	uint8_t data = SX1276_ReadReg(SX1276_31_DETECTOPTIMIZE);
+	data = (data & 0b01111000) | detect_optimize;
+	data = data | (auto_if << 7);
+
+	SX1276_WriteReg(SX1276_31_DETECTOPTIMIZE, data);
+}
+
+void SX1276_ConfigModem1(uint8_t bandwidth, uint8_t coding_rate, bool implicit_header_mode)
+{
+	uint8_t data = 0x00;
+	data = data | (bandwidth << 4);
+	data = data | (coding_rate << 1);
+	data = data | implicit_header_mode;
+
+	SX1276_WriteReg(SX1276_1D_MODEMCONFIG1, data);
+}
+
+void SX1276_ConfigModem2(uint8_t spreading_factor, bool tx_continuous_mode, bool rx_payload_crc_on)
+{
+	uint8_t data = SX1276_ReadReg(SX1276_1E_MODEMCONFIG2);
+	data = data & 0b11; // preserve the last 2 bits
+	data = data | (spreading_factor << 4);
+	data = data | (tx_continuous_mode << 3);
+	data = data | (rx_payload_crc_on << 2);
+
+	SX1276_WriteReg(SX1276_1E_MODEMCONFIG2, data);
+}
+
+void SX1276_ConfigModem3(bool low_data_rate_optimize, bool agc_auto_on)
+{
+	uint8_t data = SX1276_ReadReg(SX1276_26_MODEMCONFIG3);
+	data = data & 0b11; // preserve the last 2 bits
+	data = data | (low_data_rate_optimize << 3);
+	data = data | (agc_auto_on << 2);
+	
+	SX1276_WriteReg(SX1276_26_MODEMCONFIG3, data);
+}
+
+void SX1276_SetPreambleLength(uint16_t length)
+{
+	uint8_t data[2];
+	data[0] = (length >> 8) & 0xFF; // high byte
+	data[1] = length & 0xFF; // low byte
+	
+	SX1276_WriteRegisterMulti(SX1276_20_PREAMBLEMSB, data, 2);
+}
+
+void SX1276_SetDetectionThreshold(uint8_t threshold)
+{
+	SX1276_WriteReg(SX1276_37_DETECTIONTHRESHOLD, threshold);
+}
+
+void SX1276_SetLna(uint8_t gain, bool high_freq_lna_boost)
+{
+	uint8_t data = SX1276_ReadReg(SX1276_0C_LNA);
+	data = data & 0b100; // preserve the third bit
+	data = data | (gain << 5);
+	
+	if(high_freq_lna_boost)
+		data = data | 0b11;
+	
+	SX1276_WriteReg(SX1276_0C_LNA, data);
+}
+
+void SX1276_SetHopPeriod(uint8_t freq_hop_period)
+{
+	SX1276_WriteReg(SX1276_24_HOPPERIOD, freq_hop_period);
+}
+
+void SX1276_SetPaDac(bool on)
+{
+	uint8_t data = SX1276_ReadReg(SX1276_4D_PADAC);
+	data = data & 0b11111000; // preserve the upper 5 bits
+
+	if(on)
+		data = data | 0x07;
+	else
+		data = data | 0x04;
+	
+	SX1276_WriteReg(SX1276_4D_PADAC, data);
+}
+
+void SX1276_SetPaConfig(bool pa_boost_pin, uint8_t max_power, uint8_t output_power)
+{
+	uint8_t data = 0x00;
+	data = data | (pa_boost_pin << 7);
+	data = data | (max_power << 4);
+	data = data | output_power;
+
+	SX1276_WriteReg(SX1276_09_PACONFIG, data);
+}
+
+void SX1276_WritePayloadToFifo(uint8_t* payload, uint8_t length)
+{
+	SX1276_WriteReg(SX1276_22_PAYLOAD_LENGTH, length);
+	SX1276_WriteReg(SX1276_0E_FIFOTXBASEADDR, 0x00);
+	SX1276_WriteReg(SX1276_0D_FIFOADDRPTR, 0x00);
+	SX1276_WriteRegisterMulti(SX1276_00_FIFO, payload, length);
+}
+
+#endif

Multiprotocol/Scanner_cc2500.ino

@@ -18,13 +18,11 @@
 #include "iface_cc2500.h"
 
 #define SCAN_MAX_RADIOCHANNEL	249 // 2483 MHz
-#define SCAN_CHANNEL_LOCK_TIME	210 // with precalibration, channel requires only 90 usec for synthesizer to settle
+#define SCAN_CHANNEL_LOCK_TIME	90 // with precalibration, channel requires only 90 usec for synthesizer to settle
 #define SCAN_AVERAGE_INTVL		20
-#define SCAN_MAX_COUNT			5
+#define SCAN_MAX_COUNT			10
 #define SCAN_CHANS_PER_PACKET	5
 
-static uint8_t scan_tlm_index;
-
 enum ScanStates {
 	SCAN_CHANNEL_CHANGE = 0,
 	SCAN_GET_RSSI = 1,
@@ -90,56 +88,53 @@ static int __attribute__((unused)) Scanner_scan_rssi()
 		rssi_rel = rssi - 128;  // relative power levels 0-127 (equals -137 to -72 dBm)
 	}
 	else {
-		rssi_rel = rssi + 128;  // relativ power levels 128-255 (equals -73 to -10 dBm)
+		rssi_rel = rssi + 128;  // relative power levels 128-255 (equals -73 to -10 dBm)
 	}
 	return rssi_rel;
 }
 
 uint16_t Scanner_callback()
 {
-	static uint8_t max_count, max_rssi;
-	uint8_t rssi;
-	switch (phase)
-	{
-		case SCAN_CHANNEL_CHANGE:
-			if(telemetry_link == 0) {
-				max_count = 0;
-				max_rssi = 0;
-				rf_ch_num++;
-				if (rf_ch_num >= (SCAN_MAX_RADIOCHANNEL + 1))
-					rf_ch_num = 0;
-				if (scan_tlm_index++ == 0)
-					pkt[0] = rf_ch_num;  // start channel for telemetry packet
-				Scanner_scan_next();
-				phase = SCAN_GET_RSSI;
-			}
-			return SCAN_CHANNEL_LOCK_TIME;
-		case SCAN_GET_RSSI:
-			rssi = Scanner_scan_rssi();
-			if(rssi >= max_rssi) {
-				max_rssi = rssi;
-				pkt[scan_tlm_index] = rssi;
-			}
-			max_count++;
-			if(max_count > SCAN_MAX_COUNT) {
-				phase = SCAN_CHANNEL_CHANGE;
-				if (scan_tlm_index == SCAN_CHANS_PER_PACKET)
-				{
-					// send data to TX
-					telemetry_link = 1;
-					scan_tlm_index = 0;
-				}
+	uint8_t rssi,max_rssi;
+	
+	//!!!Blocking mode protocol!!!
+	TX_MAIN_PAUSE_off;
+	tx_resume();
+	while(1)
+	{ //Start
+		packet_in[0] = rf_ch_num;						// start channel for telemetry packet
+		for(uint8_t i=0;i<SCAN_CHANS_PER_PACKET;i++)
+		{
+			Scanner_scan_next();						// set channel
+			delayMicroseconds(SCAN_CHANNEL_LOCK_TIME);	// wait for freq to adjust
+			max_rssi = 0;
+			for(uint8_t j=0;j<SCAN_MAX_COUNT;j++)
+			{
+				rssi = Scanner_scan_rssi();
+				if(rssi >= max_rssi) max_rssi = rssi;
+				delayMicroseconds(SCAN_AVERAGE_INTVL);	// wait before next read
 			}
+			packet_in[i+1] = max_rssi;
+			//next channel
+			rf_ch_num++;
+			if (rf_ch_num >= (SCAN_MAX_RADIOCHANNEL + 1))
+				rf_ch_num = 0;
+		}
+		telemetry_link = 1;
+		do
+		{
+			if(Update_All())
+				return 1000;							// protocol has changed, give back the control to main
+		}
+		while(telemetry_link == 1);
 	}
-	return SCAN_AVERAGE_INTVL;
+	return 0;
 }
 
 uint16_t initScanner(void)
 {
-	rf_ch_num = SCAN_MAX_RADIOCHANNEL;
-	scan_tlm_index = 0;
+	rf_ch_num = 0;
 	telemetry_link = 0;
-	phase = SCAN_CHANNEL_CHANGE;
 	Scanner_cc2500_init();
 	CC2500_Strobe(CC2500_SRX);
 	Scanner_calibrate();

Multiprotocol/Skyartec_cc2500.ino

@@ -0,0 +1,174 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#if defined(SKYARTEC_CC2500_INO)
+
+#include "iface_cc2500.h"
+
+//#define SKYARTEC_FORCE_ID
+
+#define SKYARTEC_BIND_CHANNEL		0x7D
+#define SKYARTEC_COARSE				0x00
+#define SKYARTEC_TX_ADDR			rx_tx_addr[1]
+#define SKYARTEC_TX_CHANNEL			rx_tx_addr[0]
+
+enum {
+    SKYARTEC_PKT1 = 0,
+    SKYARTEC_SLEEP1, 
+    SKYARTEC_PKT2,
+    SKYARTEC_SLEEP2, 
+    SKYARTEC_PKT3,
+    SKYARTEC_SLEEP3, 
+    SKYARTEC_PKT4,
+    SKYARTEC_SLEEP4, 
+    SKYARTEC_PKT5,
+    SKYARTEC_SLEEP5, 
+    SKYARTEC_PKT6,
+    SKYARTEC_LAST,
+};
+
+const PROGMEM uint8_t SKYARTEC_init_values[] = {
+  /* 04 */ 0x13, 0x18, 0xFF, 0x05,
+  /* 08 */ 0x05, 0x43, SKYARTEC_BIND_CHANNEL, 0x09, 0x00, 0x5D, 0x93, 0xB1 + SKYARTEC_COARSE,
+  /* 10 */ 0x2D, 0x20, 0x73, 0x22, 0xF8, 0x50, 0x07, 0x30,
+  /* 18 */ 0x18, 0x1D, 0x1C, 0xC7, 0x00, 0xB2, 0x87, 0x6B,
+  /* 20 */ 0xF8, 0xB6, 0x10, 0xEA, 0x0A, 0x00, 0x11, 0x41,
+  /* 28 */ 0x00, 0x59, 0x7F, 0x3F, 0x88, 0x31, 0x0B
+};
+
+static void __attribute__((unused)) SKYARTEC_rf_init()
+{
+	CC2500_Strobe(CC2500_SIDLE);
+
+	for (uint8_t i = 4; i <= 0x2E; ++i)
+		CC2500_WriteReg(i, pgm_read_byte_near(&SKYARTEC_init_values[i-4]));
+	
+	prev_option = option;
+	CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+
+	CC2500_SetTxRxMode(TX_EN);
+	CC2500_SetPower();
+}
+
+static void __attribute__((unused)) SKYARTEC_send_data_packet()
+{
+	//13 c5 01 0259 0168 0000 0259 030c 021a 0489 f3 7e 0a
+	//header
+	packet[0] = 0x13;				//Length
+	packet[1] = SKYARTEC_TX_ADDR;	//Tx Addr?
+	packet[2] = 0x01;				//???
+	//channels
+	for(uint8_t i = 0; i < 7; i++)
+	{
+		uint16_t value = convert_channel_16b_limit(CH_AETR[i],0x000,0x500);
+		packet[3+2*i] = value >> 8;
+		packet[4+2*i] = value & 0xff;
+	}
+	//checks
+    uint8_t xor1 = 0;
+    for(uint8_t i = 3; i <= 16; i++)
+        xor1 ^= packet[i];
+    packet[17] = xor1;
+    uint8_t xor2 = 0;
+    for(uint8_t i = 3; i <= 14; i++)
+        xor2 ^= packet[i];
+    packet[18] = xor2;
+    packet[19] = packet[3] + packet[5] + packet[7] + packet[9] + packet[11] + packet[13];
+
+	CC2500_WriteReg(CC2500_04_SYNC1,	rx_tx_addr[3]);
+	CC2500_WriteReg(CC2500_05_SYNC0,	rx_tx_addr[2]);
+	CC2500_WriteReg(CC2500_09_ADDR,		SKYARTEC_TX_ADDR);
+	CC2500_WriteReg(CC2500_0A_CHANNR,	SKYARTEC_TX_CHANNEL);
+	CC2500_WriteData(packet, 20);
+}
+
+static void __attribute__((unused)) SKYARTEC_send_bind_packet()
+{
+	//0b 7d 01 01 b2 c5 4a 2f 00 00 c5 d6
+	packet[0] = 0x0b;       //Length
+	packet[1] = 0x7d;
+	packet[2] = 0x01;
+	packet[3] = 0x01;
+	memcpy(&packet[4], rx_tx_addr, 4);
+	packet[8] = 0x00;
+	packet[9] = 0x00;
+	packet[10] = SKYARTEC_TX_ADDR;
+	uint8_t xor1 = 0;
+	for(uint8_t i = 3; i < 11; i++)
+		xor1 ^= packet[i];
+	packet[11] = xor1;
+	CC2500_WriteReg(CC2500_04_SYNC1,	0x7d);
+	CC2500_WriteReg(CC2500_05_SYNC0,	0x7d);
+	CC2500_WriteReg(CC2500_09_ADDR,		0x7d);
+	CC2500_WriteReg(CC2500_0A_CHANNR,	SKYARTEC_BIND_CHANNEL);
+	CC2500_WriteData(packet, 12);
+}
+
+uint16_t ReadSKYARTEC()
+{
+	if (phase & 0x01)
+	{
+		CC2500_Strobe(CC2500_SIDLE);
+		if (phase == SKYARTEC_LAST)
+		{
+			CC2500_SetPower();
+			// Tune frequency if it has been changed
+			if ( prev_option != option )
+			{
+				CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
+				prev_option = option ;
+			}
+			phase = SKYARTEC_PKT1;
+		}
+		else
+			phase++;
+		return 3000;
+	}
+	if (phase == SKYARTEC_PKT1 && bind_counter)
+	{
+		SKYARTEC_send_bind_packet();
+		bind_counter--;
+		if(bind_counter == 0)
+			BIND_DONE;
+	}
+	else
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(6000);
+		#endif
+		SKYARTEC_send_data_packet();
+	}
+	phase++;
+	return 3000;
+}
+
+uint16_t initSKYARTEC()
+{
+    SKYARTEC_rf_init();
+
+	#ifdef SKYARTEC_FORCEID
+		memset(rx_tx_addr,0x00,4);
+	#endif
+	if(rx_tx_addr[0]==0) rx_tx_addr[0]=0xB2;
+	if(rx_tx_addr[1]==0) rx_tx_addr[1]=0xC5;
+	if(rx_tx_addr[2]==0) rx_tx_addr[2]=0x4A;
+	if(rx_tx_addr[3]==0) rx_tx_addr[3]=0x2F;
+
+	bind_counter = 250;
+	phase = SKYARTEC_PKT1;
+	return 10000;
+}
+
+#endif

Multiprotocol/Symax_nrf24l01.ino

@@ -359,6 +359,9 @@ uint16_t symax_callback()
 			}
 			break;
 		case SYMAX_DATA:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(SYMAX_PACKET_PERIOD);
+			#endif
 			SYMAX_send_packet(0);
 			break;
 	}

Multiprotocol/TRAXXAS_cyrf6936.ino

@@ -162,6 +162,9 @@ uint16_t ReadTRAXXAS()
 			TRAXXAS_cyrf_data_config();
 			phase++;
 		case TRAXXAS_DATA:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(13940);
+			#endif
 			TRAXXAS_send_data_packet();
 			break;
 	}

Multiprotocol/Tiger_nrf24l01.ino

@@ -0,0 +1,182 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+// Compatible with Tiger Drone 1400782.
+
+#if defined(TIGER_NRF24L01_INO)
+
+#include "iface_nrf24l01.h"
+
+#define TIGER_FORCE_ID
+
+#define TIGER_INITIAL_WAIT    500
+#define TIGER_PACKET_PERIOD   3940
+#define TIGER_RF_NUM_CHANNELS 4
+#define TIGER_BIND_RF_NUM_CHANNELS 8
+#define TIGER_PAYLOAD_SIZE    16
+#define TIGER_BIND_COUNT	  761		//3sec
+
+
+static uint8_t __attribute__((unused)) TIGER_convert_channel(uint8_t num)
+{
+	uint8_t val=convert_channel_8b(num);
+	// 7F..01=left, 00=center, 80..FF=right
+	if(val==0x80)
+		val=0;				// 0
+	else
+		if(val>0x80)
+			val--;			// 80..FE
+		else
+		{
+			val=0x80-val;	// 80..01
+			if(val==0x80)
+				val--;		// 7F..01
+		}
+	return val;
+}
+
+static void __attribute__((unused)) TIGER_send_packet()
+{
+	if(IS_BIND_DONE)
+	{
+		//Channels
+		packet[0]=convert_channel_8b(THROTTLE);		// 00..FF
+		packet[1]=TIGER_convert_channel(RUDDER);	// 7F..01=left, 00=center, 80..FF=right
+		packet[2]=TIGER_convert_channel(ELEVATOR);	// 7F..01=down, 00=center, 80..FF=up
+		packet[3]=TIGER_convert_channel(AILERON);	// 7F..01=left, 00=center, 80..FF=right
+		//Flags
+		packet[14]= GET_FLAG(CH5_SW, 0x04)			//FLIP
+				  | GET_FLAG(CH6_SW, 0x10);			//LIGHT
+	}
+	//Check
+	crc8=0;
+	for(uint8_t i=0;i<TIGER_PAYLOAD_SIZE-1;i++)
+		crc8+=packet[i];
+	packet[TIGER_PAYLOAD_SIZE-1]=crc8;
+
+	//Hopping frequency
+	NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency[hopping_frequency_no>>1]);
+	hopping_frequency_no++;
+	if(IS_BIND_IN_PROGRESS)
+	{
+		if(hopping_frequency_no>=2*TIGER_BIND_RF_NUM_CHANNELS)
+			hopping_frequency_no=0;
+	}
+	else
+	{
+		if(hopping_frequency_no>=2*(TIGER_BIND_RF_NUM_CHANNELS+TIGER_RF_NUM_CHANNELS))
+			hopping_frequency_no=2*TIGER_BIND_RF_NUM_CHANNELS;
+	}
+
+	//Clear packet status bits and TX FIFO
+	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
+	NRF24L01_FlushTx();
+	//Send packet
+	XN297_WritePayload(packet, TIGER_PAYLOAD_SIZE);
+	//Set tx_power
+	NRF24L01_SetPower();
+}
+
+static void __attribute__((unused)) TIGER_init()
+{
+	NRF24L01_Initialize();
+	NRF24L01_SetTxRxMode(TX_EN);
+	XN297_SetTXAddr((uint8_t *)"\x68\x94\xA6\xD5\xC3", 5);
+	NRF24L01_FlushTx();
+	NRF24L01_FlushRx();
+	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);     	// Clear data ready, data sent, and retransmit
+	NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);      	// No Auto Acknowldgement on all data pipes
+	NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);  	// Enable data pipe 0 only
+	NRF24L01_SetBitrate(NRF24L01_BR_1M);             	// 1Mbps
+	NRF24L01_WriteReg(NRF24L01_04_SETUP_RETR, 0x00);	// No retransmits
+	NRF24L01_SetPower();
+	NRF24L01_Activate(0x73);							// Activate feature register
+	NRF24L01_WriteReg(NRF24L01_1C_DYNPD, 0x00);			// Disable dynamic payload length on all pipes
+	NRF24L01_WriteReg(NRF24L01_1D_FEATURE, 0x01);
+	NRF24L01_Activate(0x73);
+	// Power on, TX mode, 2byte CRC
+	XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP));
+}
+
+static void __attribute__((unused)) TIGER_initialize_txid()
+{
+#ifdef TIGER_FORCE_ID
+	rx_tx_addr[0]=0x64;
+	rx_tx_addr[1]=0x39;
+	rx_tx_addr[2]=0x12;
+	rx_tx_addr[3]=0x00;
+	rx_tx_addr[4]=0x00;
+	memcpy(hopping_frequency,"\x0E\x39\x1C\x07\x24\x3E\x2B\x47",TIGER_BIND_RF_NUM_CHANNELS);
+	memcpy(&hopping_frequency[TIGER_BIND_RF_NUM_CHANNELS],"\x36\x41\x37\x4E",TIGER_RF_NUM_CHANNELS);
+#endif
+	//prepare bind packet
+	memset(&packet[0], 0x00, 4);
+	memset(&packet[4], 0x40, 10);
+	memcpy(&packet[7], rx_tx_addr, 5);
+	packet[14]=0xC0;
+}
+
+uint16_t TIGER_callback()
+{
+	#ifdef MULTI_SYNC
+		telemetry_set_input_sync(TIGER_PACKET_PERIOD);
+	#endif
+	if(IS_BIND_IN_PROGRESS)
+		if(--bind_counter==0)
+		{
+			BIND_DONE;
+			XN297_SetTXAddr((uint8_t *)"\x49\xA6\x83\xEB\x4B", 5);
+		}
+	TIGER_send_packet();
+	return TIGER_PACKET_PERIOD;
+}
+
+uint16_t initTIGER()
+{
+	BIND_IN_PROGRESS;	// autobind protocol
+	TIGER_initialize_txid();
+	TIGER_init();
+	hopping_frequency_no = 0;
+	bind_counter=TIGER_BIND_COUNT;
+	return TIGER_INITIAL_WAIT;
+}
+
+#endif
+/*Bind
+- RF setup: 1Mbps, scrambled, CRC
+- TX addr: 0x68 0x94 0xA6 0xD5 0xC3
+- 8 RF channels: 0x0E 0x39 0x1C 0x07 0x24 0x3E 0x2B 0x47
+- 2 packets per RF channel, 3940µs between packets
+- payload 16 bytes: 0x00 0x00 0x00 0x00 0x40 0x40 0x40 0x64 0x39 0x12 0x00 0x00 0x40 0x40 0xC0 0xAF
+- payload[15]=sum of payload[0..14]
+- the only difference with normal packets is the payload[14]=0xC0
+- ??? payload[7..11] TX ID ???
+
+Normal
+- RF setup: 1Mbps
+- TX addr: 0x49 0xA6 0x83 0xEB 0x4B
+- 4 RF channels: 0x36 0x41 0x37 0x4E
+- 2 packets per RF channel, 3940µs between packets
+- payload 16 bytes: 0x00 0x00 0x00 0x00 0x40 0x40 0x40 0x64 0x39 0x12 0x00 0x00 0x40 0x40 0x00 0xEF
+- payload[15]=sum of payload[0..14]
+- throttle is on payload[0] 00..FF
+- rudder is on payload[1] 00=center, 80..FF=right, 01..7F=left
+- elevator is on payload[2] 00=center, 80..FF=up, 01..7F=down
+- aileron is on payload[3] 00=center, 80..FF=right, 01..7F=left
+- trims payload[4..6]
+- ??? payload[7..11] TX ID ???
+- ??? payload[12..13] ???
+- flip is on payload[14] and flag 0x04
+- light is on payload[14] and flag 0x10
+*/

Multiprotocol/V2X2_nrf24l01.ino

@@ -264,6 +264,9 @@ uint16_t ReadV2x2()
 		case V202_DATA:
 			if (packet_sent && NRF24L01_packet_ack() != PKT_ACKED)
 				return V2X2_PACKET_CHKTIME;
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(V2X2_PACKET_PERIOD);
+			#endif
 			V2X2_send_packet(0);
 			break;
 	}

Multiprotocol/V761_nrf24l01.ino

@@ -174,6 +174,9 @@ uint16_t V761_callback()
 			}
 			return 15730;
 		case V761_DATA:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(V761_PACKET_PERIOD);
+			#endif
 			V761_send_packet();
 			break;
 	}

Multiprotocol/V911S_xn297l.ino

@@ -16,7 +16,7 @@
 
 #if defined(V911S_NRF24L01_INO)
 
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 //#define V911S_ORIGINAL_ID
 
@@ -30,6 +30,8 @@
 
 // flags going to packet[1]
 #define	V911S_FLAG_EXPERT	0x04
+#define	E119_FLAG_EXPERT	0x08
+#define	E119_FLAG_CALIB		0x40
 // flags going to packet[2]
 #define	V911S_FLAG_CALIB	0x01
 
@@ -56,10 +58,21 @@ static void __attribute__((unused)) V911S_send_packet(uint8_t bind)
 		}
 		if(rf_ch_num&2)
 			channel=7-channel;
+		XN297L_Hopping(channel);
+		hopping_frequency_no++;
+		hopping_frequency_no&=7;							// 8 RF channels
+
 		packet[ 0]=(rf_ch_num<<3)|channel;
-		packet[ 1]=V911S_FLAG_EXPERT;					// short press on left button
-		packet[ 2]=GET_FLAG(CH5_SW,V911S_FLAG_CALIB);	// long  press on right button
-		memset(packet+3, 0x00, V911S_PACKET_SIZE - 3);
+		memset(packet+1, 0x00, V911S_PACKET_SIZE - 1);
+		if(sub_protocol==V911S_STD)
+		{
+			packet[ 1]=V911S_FLAG_EXPERT;					// short press on left button
+			packet[ 2]=GET_FLAG(CH5_SW,V911S_FLAG_CALIB);	// long  press on right button
+		}
+		else
+			packet[ 1]=E119_FLAG_EXPERT						// short  press on left button
+					  |GET_FLAG(CH5_SW,E119_FLAG_CALIB);	// short  press on right button
+			
 		//packet[3..6]=trims TAER signed
 		uint16_t ch=convert_channel_16b_limit(THROTTLE ,0,0x7FF);
 		packet[ 7] = ch;
@@ -68,22 +81,31 @@ static void __attribute__((unused)) V911S_send_packet(uint8_t bind)
 		packet[ 8]|= ch<<3;
 		packet[ 9] = ch>>5;
 		ch=convert_channel_16b_limit(ELEVATOR,0,0x7FF);
-		packet[10] = ch;
-		packet[11] = ch>>8;
-		ch=convert_channel_16b_limit(RUDDER  ,0x7FF,0);
-		packet[11]|= ch<<3;
-		packet[12] = ch>>5;
+		if(sub_protocol==V911S_STD)
+		{
+			packet[10] = ch;
+			packet[11] = ch>>8;
+			ch=convert_channel_16b_limit(RUDDER  ,0x7FF,0);
+			packet[11]|= ch<<3;
+			packet[12] = ch>>5;
+		}
+		else
+		{
+			ch=0x7FF-ch;
+			packet[ 9]|= ch<<6;
+			packet[10] = ch>>2;
+			packet[11] = ch>>10;
+			ch=convert_channel_16b_limit(RUDDER  ,0x7FF,0);
+			packet[11]|= ch<<1;
+			packet[12] = ch>>7;
+		}
 	}
 	
-	if (!bind)
-	{
-		XN297L_Hopping(channel);
-		hopping_frequency_no++;
-		hopping_frequency_no&=7;	// 8 RF channels
-	}
-
-	XN297L_WritePayload(packet, V911S_PACKET_SIZE);
-
+	if(sub_protocol==V911S_STD)
+		XN297L_WritePayload(packet, V911S_PACKET_SIZE);
+	else
+		XN297L_WriteEnhancedPayload(packet, V911S_PACKET_SIZE, bind?0:1);
+	
 	XN297L_SetPower();				// Set tx_power
 	XN297L_SetFreqOffset();			// Set frequency offset
 }
@@ -91,7 +113,10 @@ static void __attribute__((unused)) V911S_send_packet(uint8_t bind)
 static void __attribute__((unused)) V911S_init()
 {
 	XN297L_Init();
-	XN297L_SetTXAddr((uint8_t *)"KNBND",5);			// Bind address
+	if(sub_protocol==V911S_STD)
+		XN297L_SetTXAddr((uint8_t *)"KNBND",5);		// V911S Bind address
+	else
+		XN297L_SetTXAddr((uint8_t *)"XPBND",5);		// E119 Bind address
 	XN297L_HoppingCalib(V911S_NUM_RF_CHANNELS);		// Calibrate all channels
 	XN297L_RFChannel(V911S_RF_BIND_CHANNEL);		// Set bind channel
 }
@@ -111,7 +136,12 @@ static void __attribute__((unused)) V911S_initialize_txid()
 uint16_t V911S_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(V911S_PACKET_PERIOD);
+		#endif
 		V911S_send_packet(0);
+	}
 	else
 	{
 		if (bind_counter == 0)
@@ -135,15 +165,30 @@ uint16_t initV911S(void)
 {
 	V911S_initialize_txid();
 	#ifdef V911S_ORIGINAL_ID
-		rx_tx_addr[0]=0xA5;
-		rx_tx_addr[1]=0xFF;
-		rx_tx_addr[2]=0x70;
-		rx_tx_addr[3]=0x8D;
-		rx_tx_addr[4]=0x76;
-		for(uint8_t i=0;i<V911S_NUM_RF_CHANNELS;i++)
-			hopping_frequency[i]=0x10+i*5;
-		hopping_frequency[0]++;
-		rf_ch_num=0;
+		if(sub_protocol==V911S_STD)
+		{//V911S
+			rx_tx_addr[0]=0xA5;
+			rx_tx_addr[1]=0xFF;
+			rx_tx_addr[2]=0x70;
+			rx_tx_addr[3]=0x8D;
+			rx_tx_addr[4]=0x76;
+			for(uint8_t i=0;i<V911S_NUM_RF_CHANNELS;i++)
+				hopping_frequency[i]=0x10+i*5;
+			hopping_frequency[0]++;
+			rf_ch_num=0;
+		}
+		else
+		{
+			//E119
+			rx_tx_addr[0]=0x30;
+			rx_tx_addr[1]=0xFF;
+			rx_tx_addr[2]=0xD1;
+			rx_tx_addr[3]=0x2C;
+			rx_tx_addr[4]=0x2A;
+			for(uint8_t i=0;i<V911S_NUM_RF_CHANNELS;i++)
+				hopping_frequency[i]=0x0E + i*5;
+			rf_ch_num=0;
+		}
 	#endif
 
 	V911S_init();

Multiprotocol/Validate.h

@@ -79,6 +79,11 @@
 		#error "The FrSkyD forced frequency tuning value is outside of the range -127..127."
 	#endif
 #endif
+#ifdef FORCE_FRSKYL_TUNING
+	#if ( FORCE_FRSKYL_TUNING < -127 ) || ( FORCE_FRSKYL_TUNING > 127 )
+		#error "The FrSkyL forced frequency tuning value is outside of the range -127..127."
+	#endif
+#endif
 #ifdef FORCE_FRSKYV_TUNING
 	#if ( FORCE_FRSKYV_TUNING < -127 ) || ( FORCE_FRSKYV_TUNING > 127 )
 		#error "The FrSkyV forced frequency tuning value is outside of the range -127..127."
@@ -94,6 +99,11 @@
 		#error "The HITEC forced frequency tuning value is outside of the range -127..127."
 	#endif
 #endif
+#ifdef FORCE_HOTT_TUNING
+	#if ( FORCE_HOTT_TUNING < -127 ) || ( FORCE_HOTT_TUNING > 127 )
+		#error "The HOTT forced frequency tuning value is outside of the range -127..127."
+	#endif
+#endif
 #ifdef FORCE_REDPINE_TUNING
 	#if ( FORCE_REDPINE_TUNING < -127 ) || ( FORCE_REDPINE_TUNING > 127 )
 		#error "The REDPINE forced frequency tuning value is outside of the range -127..127."
@@ -104,6 +114,11 @@
 		#error "The SFHSS forced frequency tuning value is outside of the range -127..127."
 	#endif
 #endif
+#ifdef FORCE_SKYARTEC_TUNING
+	#if ( FORCE_SKYARTEC_TUNING < -127 ) || ( FORCE_SKYARTEC_TUNING > 127 )
+		#error "The SKYARTEC forced frequency tuning value is outside of the range -127..127."
+	#endif
+#endif
 //A7105
 #ifdef FORCE_AFHDS2A_TUNING
 	#if ( FORCE_AFHDS2A_TUNING < -300 ) || ( FORCE_AFHDS2A_TUNING > 300 )
@@ -125,6 +140,11 @@
 		#error "The Flyzone forced frequency tuning value is outside of the range -300..300."
 	#endif
 #endif
+#ifdef FORCE_PELIKAN_TUNING
+	#if ( FORCE_PELIKAN_TUNING < -300 ) || ( FORCE_PELIKAN_TUNING > 300 )
+		#error "The Pelikan forced frequency tuning value is outside of the range -300..300."
+	#endif
+#endif
 #ifdef FORCE_HUBSAN_TUNING
 	#if ( FORCE_HUBSAN_TUNING < -300 ) || ( FORCE_HUBSAN_TUNING > 300 )
 		#error "The Hubsan forced frequency tuning value is outside of the range -300..300."
@@ -141,6 +161,9 @@
 	#ifndef FORCE_FLYZONE_TUNING
 		#define FORCE_FLYZONE_TUNING 0
 	#endif
+	#ifndef FORCE_PELIKAN_TUNING
+		#define FORCE_PELIKAN_TUNING 0
+	#endif
 	#ifndef FORCE_HUBSAN_TUNING
 		#define FORCE_HUBSAN_TUNING 0
 	#endif
@@ -162,6 +185,7 @@
 	#undef CC25_CSN_pin
 	#undef NRF24L01_INSTALLED	// Disable NRF for OrangeTX module
 	#undef NRF_CSN_pin
+	#undef SX1276_INSTALLED		// Disable NRF for OrangeTX module
 	#define TELEMETRY			// Enable telemetry
 	#define INVERT_TELEMETRY	// Enable invert telemetry
 	#define DSM_TELEMETRY		// Enable DSM telemetry
@@ -169,69 +193,89 @@
 
 //Make sure protocols are selected correctly
 #ifndef A7105_INSTALLED
-	#undef FLYSKY_A7105_INO
-	#undef HUBSAN_A7105_INO
 	#undef AFHDS2A_A7105_INO
-	#undef BUGS_A7105_INO
-	#undef FLYZONE_A7105_INO
 	#undef AFHDS2A_RX_A7105_INO
+	#undef BUGS_A7105_INO
+	#undef FLYSKY_A7105_INO
+	#undef FLYZONE_A7105_INO
+	#undef HUBSAN_A7105_INO
+	#undef PELIKAN_A7105_INO
 #endif
 #ifndef CYRF6936_INSTALLED
 	#undef	DEVO_CYRF6936_INO
 	#undef	DSM_CYRF6936_INO
+	#undef	HOTT_CC2500_INO
 	#undef	J6PRO_CYRF6936_INO
+	#undef	TRAXXAS_CYRF6936_INO
 	#undef	WFLY_CYRF6936_INO
 	#undef	WK2x01_CYRF6936_INO
-	#undef	TRAXXAS_CYRF6936_INO
 #endif
 #ifndef CC2500_INSTALLED
+	#undef	CORONA_CC2500_INO
 	#undef	FRSKYD_CC2500_INO
+	#undef	FRSKYL_CC2500_INO
 	#undef	FRSKYV_CC2500_INO
 	#undef	FRSKYX_CC2500_INO
-	#undef	SFHSS_CC2500_INO
-	#undef	CORONA_CC2500_INO
-	#undef	REDPINE_CC2500_INO
+	#undef	FRSKY_RX_CC2500_INO
 	#undef	HITEC_CC2500_INO
-	#undef	XN297L_CC2500_EMU
+	#undef	HOTT_CC2500_INO
+	#undef	REDPINE_CC2500_INO
 	#undef	SCANNER_CC2500_INO
-	#undef	FRSKYX_RX_CC2500_INO
+	#undef	SFHSS_CC2500_INO
+	#undef	SKYARTEC_CC2500_INO
 #endif
 #ifndef NRF24L01_INSTALLED
+	#undef	ASSAN_NRF24L01_INO
 	#undef	BAYANG_NRF24L01_INO
+	#undef	BAYANG_RX_NRF24L01_INO
+	#undef	BUGSMINI_NRF24L01_INO
+	#undef	CABELL_NRF24L01_INO
+	#undef	CFLIE_NRF24L01_INO
 	#undef	CG023_NRF24L01_INO
 	#undef	CX10_NRF24L01_INO
+	#undef	DM002_NRF24L01_INO
+	#undef	E01X_NRF24L01_INO
 	#undef	ESKY_NRF24L01_INO
+	#undef	ESKY150_NRF24L01_INO
+	#undef	FQ777_NRF24L01_INO
+	#undef	FX816_NRF24L01_INO
+	#undef	FY326_NRF24L01_INO
+	#undef	GD00X_NRF24L01_INO
+	#undef	GW008_NRF24L01_INO
+	#undef	H8_3D_NRF24L01_INO
 	#undef	HISKY_NRF24L01_INO
+	#undef	HONTAI_NRF24L01_INO
 	#undef	KF606_NRF24L01_INO
 	#undef	KN_NRF24L01_INO
+	#undef	MJXQ_NRF24L01_INO
+	#undef	MT99XX_NRF24L01_INO
+	#undef	NCC1701_NRF24L01_INO
+	#undef	POTENSIC_NRF24L01_INO
+	#undef	PROPEL_NRF24L01_INO
+	#undef	Q303_NRF24L01_INO
+	#undef	SHENQI_NRF24L01_INO
 	#undef	SLT_NRF24L01_INO
 	#undef	SYMAX_NRF24L01_INO
+	#undef	TIGER_NRF24L01_INO
 	#undef	V2X2_NRF24L01_INO
-	#undef	YD717_NRF24L01_INO
-	#undef	MT99XX_NRF24L01_INO
-	#undef	MJXQ_NRF24L01_INO
-	#undef	SHENQI_NRF24L01_INO
-	#undef	FY326_NRF24L01_INO
-	#undef	FQ777_NRF24L01_INO
-	#undef	ASSAN_NRF24L01_INO
-	#undef	HONTAI_NRF24L01_INO
-	#undef	Q303_NRF24L01_INO
-	#undef	GW008_NRF24L01_INO
-	#undef	GD00X_NRF24L01_INO
-	#undef	DM002_NRF24L01_INO
-	#undef	CABELL_NRF24L01_INO
-	#undef	ESKY150_NRF24L01_INO
-	#undef	H8_3D_NRF24L01_INO
-	#undef	CFLIE_NRF24L01_INO
-	#undef	BUGSMINI_NRF24L01_INO
-	#undef	NCC1701_NRF24L01_INO
-	#undef	E01X_NRF24L01_INO
 	#undef	V761_NRF24L01_INO
 	#undef	V911S_NRF24L01_INO
-	#undef	XN297L_CC2500_EMU
-	#undef	POTENSIC_NRF24L01_INO
+	#undef	XK_NRF24L01_INO
+	#undef	YD717_NRF24L01_INO
 	#undef	ZSX_NRF24L01_INO
 #endif
+#if not defined(STM32_BOARD)
+	#undef SX1276_INSTALLED
+#endif
+#ifndef SX1276_INSTALLED
+	#undef FRSKYR9_SX1276_INO
+#endif
+
+//OpenTX 2.3.x issue
+#if defined (FRSKYD_CC2500_INO) || defined(FRSKYV_CC2500_INO) || defined(FRSKYX_CC2500_INO)
+	#define	FRSKYX_CC2500_INO
+	#define	FRSKY_RX_CC2500_INO
+#endif
 
 //Make sure telemetry is selected correctly
 #ifndef TELEMETRY
@@ -247,16 +291,19 @@
 	#undef NCC1701_HUB_TELEMETRY
 	#undef HUB_TELEMETRY
 	#undef SPORT_TELEMETRY
-	#undef SPORT_POLLING
+	#undef SPORT_SEND
 	#undef DSM_TELEMETRY
 	#undef MULTI_STATUS
 	#undef MULTI_TELEMETRY
 	#undef SCANNER_TELEMETRY
 	#undef SCANNER_CC2500_INO
-	#undef FRSKYX_RX_TELEMETRY
-	#undef FRSKYX_RX_CC2500_INO
+	#undef FRSKY_RX_TELEMETRY
+	#undef FRSKY_RX_CC2500_INO
 	#undef AFHDS2A_RX_TELEMETRY
 	#undef AFHDS2A_RX_A7105_INO
+	#undef HOTT_FW_TELEMETRY
+	#undef BAYANG_RX_TELEMETRY
+	#undef BAYANG_RX_NRF24L01_INO
 #else
 	#if defined(MULTI_TELEMETRY) && defined(MULTI_STATUS)
 		#error You should choose either MULTI_TELEMETRY or MULTI_STATUS but not both.
@@ -265,14 +312,18 @@
 		#undef SCANNER_TELEMETRY
 		#undef SCANNER_CC2500_INO
 	#endif
-	#if not defined(FRSKYX_RX_CC2500_INO) || not defined(FRSKYX_RX_TELEMETRY)
-		#undef FRSKYX_RX_TELEMETRY
-		#undef FRSKYX_RX_CC2500_INO
+	#if not defined(FRSKY_RX_CC2500_INO) || not defined(FRSKY_RX_TELEMETRY)
+		#undef FRSKY_RX_TELEMETRY
+		#undef FRSKY_RX_CC2500_INO
 	#endif
 	#if not defined(AFHDS2A_RX_A7105_INO) || not defined(AFHDS2A_RX_TELEMETRY)
 		#undef AFHDS2A_RX_TELEMETRY
 		#undef AFHDS2A_RX_A7105_INO
 	#endif
+	#if not defined(BAYANG_RX_NRF24L01_INO) || not defined(BAYANG_RX_TELEMETRY)
+		#undef BAYANG_RX_TELEMETRY
+		#undef BAYANG_RX_NRF24L01_INO
+	#endif
 	#if not defined(BAYANG_NRF24L01_INO)
 		#undef BAYANG_HUB_TELEMETRY
 	#endif
@@ -301,24 +352,40 @@
 	#endif
 	#if not defined(FRSKYX_CC2500_INO)
 		#undef SPORT_TELEMETRY
-		#undef SPORT_POLLING
+		#undef SPORT_SEND
 	#endif
-	#if not defined (SPORT_TELEMETRY) || not defined (STM32_BOARD)
-		#undef SPORT_POLLING
-	#endif
-	#if defined SPORT_POLLING && not defined INVERT_TELEMETRY
-		#error SPORT_POLLING has been defined but not INVERT_TELEMETRY. They should be both enabled to work.
+	#if not defined (SPORT_TELEMETRY)
+		#undef SPORT_SEND
 	#endif
 	#if not defined(DSM_CYRF6936_INO)
 		#undef DSM_TELEMETRY
 	#endif
-	#if not defined(DSM_TELEMETRY) && not defined(SPORT_TELEMETRY) && not defined(HUB_TELEMETRY) && not defined(HUBSAN_HUB_TELEMETRY) && not defined(BUGS_HUB_TELEMETRY) && not defined(NCC1701_HUB_TELEMETRY) && not defined(BAYANG_HUB_TELEMETRY) && not defined(CABELL_HUB_TELEMETRY) && not defined(AFHDS2A_HUB_TELEMETRY) && not defined(AFHDS2A_FW_TELEMETRY) && not defined(MULTI_TELEMETRY) && not defined(MULTI_STATUS) && not defined(HITEC_HUB_TELEMETRY) && not defined(HITEC_FW_TELEMETRY) && not defined(SCANNER_TELEMETRY) && not defined(FRSKYX_RX_TELEMETRY)
+	#if not defined(HOTT_CC2500_INO)
+		#undef HOTT_FW_TELEMETRY
+	#endif
+	#if not defined(HOTT_FW_TELEMETRY) && not defined(DSM_TELEMETRY) && not defined(SPORT_TELEMETRY) && not defined(HUB_TELEMETRY) && not defined(HUBSAN_HUB_TELEMETRY) && not defined(BUGS_HUB_TELEMETRY) && not defined(NCC1701_HUB_TELEMETRY) && not defined(BAYANG_HUB_TELEMETRY) && not defined(CABELL_HUB_TELEMETRY) && not defined(AFHDS2A_HUB_TELEMETRY) && not defined(AFHDS2A_FW_TELEMETRY) && not defined(MULTI_TELEMETRY) && not defined(MULTI_STATUS) && not defined(HITEC_HUB_TELEMETRY) && not defined(HITEC_FW_TELEMETRY) && not defined(SCANNER_TELEMETRY) && not defined(FRSKY_RX_TELEMETRY) && not defined(AFHDS2A_RX_TELEMETRY) && not defined(BAYANG_RX_TELEMETRY)
 		#undef TELEMETRY
 		#undef INVERT_TELEMETRY
-		#undef SPORT_POLLING
+		#undef MULTI_TELEMETRY
+		#undef MULTI_STATUS
 	#endif
 #endif
 
+#ifdef SPORT_TELEMETRY
+	#define SPORT_SEND
+#endif
+
+#if not defined(STM32_BOARD)
+	#undef MULTI_SYNC
+#endif
+
+#if not defined(MULTI_TELEMETRY)
+	#undef MULTI_SYNC
+	#undef MULTI_NAMES
+#else
+	#define MULTI_NAMES
+#endif
+
 //Make sure TX is defined correctly
 #ifndef AILERON
 	#error You must select a correct channel order.
@@ -370,3 +437,18 @@
 #if defined (STM32_BOARD) && defined (DEBUG_SERIAL) && defined (NRF24L01_INSTALLED)
 	#define XN297DUMP_NRF24L01_INO
 #endif
+
+//Check if Direct inputs defined correctly
+#if defined (ENABLE_DIRECT_INPUTS) 
+	#if not defined (STM32_BOARD) || not defined (ENABLE_PPM) || defined (ENABLE_SERIAL)
+		#error You can enable dirct inputs only in PPM mode and only for STM32 board.
+	#endif
+
+	#if not defined (DI1_PIN) && not defined (DI2_PIN) && not defined (DI3_PIN) && not defined (DI4_PIN)
+		#error You must define at least 1 direct input pin or undefine ENABLE_DIRECT_INPUTS in config.
+	#endif
+	
+	#if not defined (DI_CH1_read) && not defined (DI_CH2_read) && not defined (DI_CH3_read) && not defined (DI_CH4_read)
+		#error You must define at least 1 direct input chanell read macros or undefine ENABLE_DIRECT_INPUTS in config.
+	#endif
+#endif

Multiprotocol/WFLY_cyrf6936.ino

@@ -194,25 +194,25 @@ uint16_t ReadWFLY()
 				debugln("L=%02X",len)
 				if(len==0x10)
 				{
-					CYRF_ReadDataPacketLen(pkt, len);
+					CYRF_ReadDataPacketLen(packet_in, len);
 					debug("RX=");
 					for(uint8_t i=0;i<0x0F;i++)
 					{
-						debug(" %02X",pkt[i]);
-						if(pkt[i]==packet[i])
+						debug(" %02X",packet_in[i]);
+						if(packet_in[i]==packet[i])
 							check++;							// Verify quickly the content
-						sum+=pkt[i];
+						sum+=packet_in[i];
 					}
-					debugln(" %02X",pkt[15]);
-					if(sum==pkt[15] && check>=10)
+					debugln(" %02X",packet_in[15]);
+					if(sum==packet_in[15] && check>=10)
 					{ // Good packet received
-						if(pkt[2]==0x64)
+						if(packet_in[2]==0x64)
 						{ // Switch to normal mode
 							BIND_DONE;
 							phase=WFLY_PREP_DATA;
 							return 10000;
 						}
-						memcpy((void *)packet,(void *)pkt,0x10);	// Send back to the RX what we've just received with no modifications
+						memcpy((void *)packet,(void *)packet_in,0x10);	// Send back to the RX what we've just received with no modifications
 					}
 					phase=WFLY_BIND_TX;							
 					return 200;
@@ -232,6 +232,9 @@ uint16_t ReadWFLY()
 			packet_count=0;
 			phase++;
 		case WFLY_DATA:
+			#ifdef MULTI_SYNC
+				telemetry_set_input_sync(5371);
+			#endif
 			start=micros();
 			while ((uint8_t)((uint8_t)micros()-(uint8_t)start) < 200)
 				if((CYRF_ReadRegister(CYRF_02_TX_CTRL) & 0x80) == 0x00)

Multiprotocol/WK2x01_cyrf6936.ino

@@ -435,6 +435,9 @@ uint16_t WK_cb()
 {
 	if (packet_sent == 0)
 	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(2800);
+		#endif
 		packet_sent = 1;
 		if(sub_protocol == WK2801)
 			WK_BuildPacket_2801();

Multiprotocol/XK_nrf24l01.ino

@@ -0,0 +1,217 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+// Compatible with X450 and X420/X520 plane.
+
+#if defined(XK_NRF24L01_INO)
+
+#include "iface_nrf250k.h"
+
+//#define FORCE_XK_ORIGINAL_ID
+
+#define XK_INITIAL_WAIT		500
+#define XK_PACKET_PERIOD	4000
+#define XK_RF_BIND_NUM_CHANNELS 8
+#define XK_RF_NUM_CHANNELS	4
+#define XK_PAYLOAD_SIZE		16
+#define XK_BIND_COUNT		750					//3sec
+
+static uint16_t __attribute__((unused)) XK_convert_channel(uint8_t num)
+{
+	uint16_t val=convert_channel_10b(num);
+	// 1FF..01=left, 00=center, 200..3FF=right
+	if(val==0x200)
+		val=0;									// 0
+	else
+		if(val>0x200)
+			val--;								// 200..3FE
+		else
+		{
+			val=0x200-val;						// 200..01
+			if(val==0x200)
+				val--;							// 1FF..01
+		}
+	return val;
+}
+
+static void __attribute__((unused)) XK_send_packet()
+{
+	memset(packet,0x00,7);
+	memset(&packet[10],0x00,5);
+
+	packet[12]=0x40;
+	packet[13]=0x40;
+	if(IS_BIND_IN_PROGRESS)
+		packet[14] = 0xC0;
+	else
+	{
+		uint16_t val=convert_channel_10b(THROTTLE);
+		packet[0] = val>>2;						// 0..255
+		//packet[12] |= val & 2;
+		val=XK_convert_channel(RUDDER);
+		packet[1] = val>>2;
+		//packet[12] |= (val & 2)<<2;
+		val=XK_convert_channel(ELEVATOR);
+		packet[2] = val>>2;
+		//packet[13] |= val & 2;
+		val=XK_convert_channel(AILERON);
+		packet[3] = val>>2;
+		//packet[13] |= (val & 2)<<2;
+		
+		memset(&packet[4],0x40,3);				// Trims
+		
+		if(Channel_data[CH5] > CHANNEL_MAX_COMMAND)
+			packet[10] = 0x10; 					// V-Mode
+		else
+			if(Channel_data[CH5] > CHANNEL_MIN_COMMAND)
+				packet[10] = 0x04; 				// 6G-Mode
+		//0x00 default M-Mode
+		
+		packet[10] |= GET_FLAG(CH7_SW,0x80);	// Emergency stop momentary switch
+
+		packet[11]  = GET_FLAG(CH8_SW,0x03)		// 3D/6G momentary switch
+					 |GET_FLAG(CH6_SW,0x40);	// Take off momentary switch
+		packet[14]  = GET_FLAG(CH9_SW,0x01)		// Photo momentary switch
+					 |GET_FLAG(CH10_SW,0x2);	// Video momentary switch
+	}
+
+	crc=packet[0];
+	for(uint8_t i=1; i<XK_PAYLOAD_SIZE-1;i++)
+		crc+=packet[i];
+	packet[15]=crc;
+
+//	debug("C: %02X, P:",hopping_frequency[(IS_BIND_IN_PROGRESS?0:XK_RF_BIND_NUM_CHANNELS)+(hopping_frequency_no>>1)]);
+	XN297L_Hopping((IS_BIND_IN_PROGRESS?0:XK_RF_BIND_NUM_CHANNELS)+(hopping_frequency_no>>1));
+	hopping_frequency_no++;
+	if(hopping_frequency_no >= (IS_BIND_IN_PROGRESS?XK_RF_BIND_NUM_CHANNELS*2:XK_RF_NUM_CHANNELS*2))
+		hopping_frequency_no=0;
+
+	XN297L_WritePayload(packet, XK_PAYLOAD_SIZE);
+//	for(uint8_t i=0; i<XK_PAYLOAD_SIZE; i++)
+//		debug(" %02X",packet[i]);
+//	debugln("");
+	
+	XN297L_SetPower();		// Set tx_power
+	XN297L_SetFreqOffset();	// Set frequency offset
+}
+
+const uint8_t PROGMEM XK_bind_hop[XK_RF_BIND_NUM_CHANNELS]= { 0x07, 0x24, 0x3E, 0x2B, 0x47, 0x0E, 0x39, 0x1C };	// Bind
+
+const uint8_t PROGMEM XK_tx_addr[]= { 0xB3, 0x67, 0xE9, 0x98, 0x3A, 0xEC, 0xA6, 0x59, 0xB2, 0x94, 0x2B, 0xA5, 0x37, 0xC5, 0x4A, 0xD3,
+									  0x49, 0xA6, 0x83, 0xEB, 0x4B, 0xC9, 0x59, 0xD2, 0x65, 0x34, 0x6A, 0xD3, 0x2C, 0x96, 0x2A, 0xA9,
+									  0x32, 0xB2, 0xB4, 0x49, 0xD3, 0x37, 0xE9 };
+
+const uint8_t PROGMEM XK_hop[]= { 0x47, 0x3A, 0x4C, 0x39, 0x4D, 0x34, 0x4A, 0x3F, 0x45, 0x3E, 0x4B, 0x3D, 0x3B, 0x48, 0x40, 0x49,
+								  0x46, 0x3C, 0x43, 0x38, 0x35, 0x42, 0x33, 0x44, 0x4E, 0x37, 0x44, 0x35, 0x37, 0x4E, 0x36, 0x41 };
+
+static void __attribute__((unused)) XK_initialize_txid()
+{
+	//bind hop
+	for(uint8_t i=0; i<XK_RF_BIND_NUM_CHANNELS; i++)
+		hopping_frequency[i]=pgm_read_byte_near( &XK_bind_hop[i] );
+
+	//GID
+	packet[7]=rx_tx_addr[1];
+	packet[8]=rx_tx_addr[2];
+	packet[9]=rx_tx_addr[3];
+	uint8_t sum=packet[7]+packet[8]+packet[9];
+//	debugln("GID=%02X %02X %02X, sum=%d", packet[7],packet[8],packet[9],sum);
+	
+	//Normal hop
+	uint8_t start=(sum&0x07)<<2;
+//	debug("start=%d, hop=",start);
+	for(uint8_t i=0; i<XK_RF_NUM_CHANNELS; i++)
+	{
+		hopping_frequency[ i + XK_RF_BIND_NUM_CHANNELS ]=pgm_read_byte_near( &XK_hop[ start + i ] );
+//		debug("%02X ", hopping_frequency[ i + XK_RF_BIND_NUM_CHANNELS ]);
+	}
+//	debugln("");
+	//Normal packet address
+	start=(sum&0x1F)+((sum>>5)&0x03);
+//	debug("start=%d, addr=",start);
+	for(uint8_t i=0; i<5; i++)
+	{
+		rx_tx_addr[i]=pgm_read_byte_near( &XK_tx_addr[ start + i ] );
+//		debug("%02X ", rx_tx_addr[ i ]);
+	}
+//	debugln("");
+
+	#ifdef FORCE_XK_ORIGINAL_ID
+		switch(RX_num%2)
+		{
+			default:
+				//TX1 X8 X450
+				//GID
+				packet[7]=0x04;
+				packet[8]=0x15;
+				packet[9]=0x22;
+				//Normal hop
+				memcpy(&hopping_frequency[XK_RF_BIND_NUM_CHANNELS],(uint8_t*)"\x3B\x48\x40\x49", XK_RF_NUM_CHANNELS);	// freq and order verified
+				//Normal packet address
+				memcpy(rx_tx_addr,(uint8_t*)"\x2C\x96\x2A\xA9\x32",5);
+				break;
+			case 1:
+				//TX2 X4 X420
+				//GID
+				packet[7]=0x13;
+				packet[8]=0x24;
+				packet[9]=0x18;
+				//Normal hop
+				memcpy(&hopping_frequency[XK_RF_BIND_NUM_CHANNELS],(uint8_t*)"\x36\x41\x37\x4E", XK_RF_NUM_CHANNELS);	// freq ok and order from xn297dump auto
+				//Normal packet address
+				memcpy(rx_tx_addr,(uint8_t*)"\xA6\x83\xEB\x4B\xC9",5);
+				break;
+		}
+	#endif
+}
+
+static void __attribute__((unused)) XK_init()
+{
+	XN297L_Init();
+	XN297L_SetTXAddr((uint8_t*)"\x68\x94\xA6\xD5\xC3", 5);						// Bind address
+	XN297L_HoppingCalib(XK_RF_BIND_NUM_CHANNELS+XK_RF_NUM_CHANNELS);			// Calibrate all channels
+}
+
+uint16_t XK_callback()
+{
+	if(sub_protocol==X420)
+		option=0;																// Forcing the use of NRF24L01@1Mbps
+	#ifdef MULTI_SYNC
+		telemetry_set_input_sync(XK_PACKET_PERIOD);
+	#endif
+	if(IS_BIND_IN_PROGRESS)
+		if(--bind_counter==0)
+		{
+			BIND_DONE;
+			XN297L_SetTXAddr(rx_tx_addr, 5);									// Normal packets address
+		}
+	XK_send_packet();
+	return XK_PACKET_PERIOD;
+}
+
+uint16_t initXK()
+{
+	if(sub_protocol==X420)
+		option=prev_option=0;													// Forcing the use of NRF24L01@1Mbps
+	BIND_IN_PROGRESS;															// Autobind protocol
+	XK_initialize_txid();
+	XK_init();
+	if(sub_protocol==X420)
+		NRF24L01_SetBitrate(NRF24L01_BR_1M);									// X420/X520 runs @1Mbps
+	hopping_frequency_no = 0;
+	bind_counter=XK_BIND_COUNT;
+	return XK_INITIAL_WAIT;
+}
+
+#endif

Multiprotocol/XN297Dump_nrf24l01.ino

@@ -33,6 +33,10 @@
 uint8_t address_length;
 uint16_t timeH=0;
 boolean scramble;
+boolean enhanced;
+boolean ack;
+uint8_t pid;
+uint8_t bitrate;
 
 static void __attribute__((unused)) XN297Dump_init()
 {
@@ -48,14 +52,14 @@ static void __attribute__((unused)) XN297Dump_init()
 	NRF24L01_WriteRegisterMulti(NRF24L01_0A_RX_ADDR_P0, (uint8_t*)"\x55\x0F\x71", 3);	// set up RX address to xn297 preamble
 	NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, XN297DUMP_MAX_PACKET_LEN);	// Enable rx pipe 0
 
-	debug("XN297 dump, address length=%d, speed=",address_length);
-	switch(sub_protocol)
+	debug("XN297 dump, address length=%d, bitrate=",address_length);
+	switch(bitrate)
 	{
-		case 0:
+		case XN297DUMP_250K:
 			NRF24L01_SetBitrate(NRF24L01_BR_250K);
 			debugln("250K");
 			break;
-		case 2:
+		case XN297DUMP_2M:
 			NRF24L01_SetBitrate(NRF24L01_BR_2M);
 			debugln("2M");
 			break;
@@ -76,9 +80,14 @@ static boolean __attribute__((unused)) XN297Dump_process_packet(void)
 {
 	uint16_t crcxored;
 	uint8_t packet_sc[XN297DUMP_MAX_PACKET_LEN], packet_un[XN297DUMP_MAX_PACKET_LEN];
+	enhanced=false;
 	// init crc
 	crc = 0xb5d2;
 	
+	/*debug("P: 71 0F 55 ");
+	for(uint8_t i=0; i<XN297DUMP_MAX_PACKET_LEN; i++)
+		debug("%02X ",packet[i]);
+	debugln("");*/
 	//Try normal payload
 	// address
 	for (uint8_t i = 0; i < address_length; i++)
@@ -142,17 +151,17 @@ static boolean __attribute__((unused)) XN297Dump_process_packet(void)
 	}
 	if(packet_length!=0)
 	{ // Found a valid CRC for the enhanced payload mode
-		debug("Enhanced ");
+		enhanced=true;
 		//check selected address length
 		if((packet_un[address_length]>>1)!=packet_length-address_length)
 		{
 			for(uint8_t i=3;i<=5;i++)
 				if((packet_un[i]>>1)==packet_length-i)
 					address_length=i;
-			debug("Wrong address length selected using %d ", address_length )
+			debugln("Detected wrong address length, using %d intead", address_length );
 		}
-		debug("pid=%d ",((packet_un[address_length]&0x01)<<1)|(packet_un[address_length+1]>>7));
-		debug("ack=%d ",(packet_un[address_length+1]>>6)&0x01);
+		pid=((packet_un[address_length]&0x01)<<1)|(packet_un[address_length+1]>>7);
+		ack=(packet_un[address_length+1]>>6)&0x01;
 		// address
 		for (uint8_t i = 0; i < address_length; i++)
 			packet[address_length-1-i]=packet_un[i];
@@ -175,92 +184,449 @@ static void __attribute__((unused)) XN297Dump_overflow()
 }
 static uint16_t XN297Dump_callback()
 {
-	static uint32_t time=0;
+	static uint32_t time=0,*time_rf;
+
+	//!!!Blocking mode protocol!!!
+	TX_MAIN_PAUSE_off;
+	tx_resume();
 	while(1)
 	{
-		if(option==0xFF && bind_counter>XN297DUMP_PERIOD_SCAN)
-		{	// Scan frequencies
-			hopping_frequency_no++;
-			bind_counter=0;
-		}
-		if(hopping_frequency_no!=rf_ch_num)
-		{	// Channel has changed
-			if(hopping_frequency_no>XN297DUMP_MAX_RF_CHANNEL)
-				hopping_frequency_no=0;	// Invalid channel 0 by default
-			rf_ch_num=hopping_frequency_no;
-			debugln("Channel=%d,0x%02X",hopping_frequency_no,hopping_frequency_no)
-			NRF24L01_WriteReg(NRF24L01_05_RF_CH,hopping_frequency_no);
-			// switch to RX mode
-			NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
-			NRF24L01_SetTxRxMode(TXRX_OFF);
-			NRF24L01_SetTxRxMode(RX_EN);
-			NRF24L01_FlushRx();
-			NRF24L01_WriteReg(NRF24L01_00_CONFIG, (0 << NRF24L01_00_EN_CRC)   // switch to RX mode and disable CRC
-											| (1 << NRF24L01_00_CRCO)
-											| (1 << NRF24L01_00_PWR_UP)
-											| (1 << NRF24L01_00_PRIM_RX));
-			phase=0;				// init timer
-		}
-		XN297Dump_overflow();
-		
-		if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))
-		{ // RX fifo data ready
-			if(NRF24L01_ReadReg(NRF24L01_09_CD) || option != 0xFF)
-			{
-				NRF24L01_ReadPayload(packet,XN297DUMP_MAX_PACKET_LEN);
-				XN297Dump_overflow();
-				uint16_t timeL=TCNT1;
-				if(TIMER2_BASE->SR & TIMER_SR_UIF)
-				{//timer just rolled over...
-					XN297Dump_overflow();
-					timeL=0;
-				}
-				if(phase==0)
-				{
-					phase=1;
-					time=0;
-				}
-				else
-					time=(timeH<<16)+timeL-time;
-				debug("RX: %5luus C=%d ", time>>1 , hopping_frequency_no);
-				time=(timeH<<16)+timeL;
-				if(XN297Dump_process_packet())
-				{ // valid crc found
-					debug("S=%c A=",scramble?'Y':'N');
-					for(uint8_t i=0; i<address_length; i++)
-					{
-						debug(" %02X",packet[i]);
-					}
-					debug(" P(%d)=",packet_length-address_length);
-					for(uint8_t i=address_length; i<packet_length; i++)
-					{
-						debug(" %02X",packet[i]);
-					}
-					debugln("");
-				}
-				else
-				{
-					debugln("Bad CRC");
-				}
+		if(sub_protocol<XN297DUMP_AUTO)
+		{
+			if(option==0xFF && bind_counter>XN297DUMP_PERIOD_SCAN)
+			{	// Scan frequencies
+				hopping_frequency_no++;
+				bind_counter=0;
 			}
+			if(hopping_frequency_no!=rf_ch_num)
+			{	// Channel has changed
+				if(hopping_frequency_no>XN297DUMP_MAX_RF_CHANNEL)
+					hopping_frequency_no=0;	// Invalid channel 0 by default
+				rf_ch_num=hopping_frequency_no;
+				debugln("Channel=%d,0x%02X",hopping_frequency_no,hopping_frequency_no);
+				NRF24L01_WriteReg(NRF24L01_05_RF_CH,hopping_frequency_no);
+				// switch to RX mode
+				NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
+				NRF24L01_SetTxRxMode(TXRX_OFF);
+				NRF24L01_SetTxRxMode(RX_EN);
+				NRF24L01_FlushRx();
+				NRF24L01_WriteReg(NRF24L01_00_CONFIG, (0 << NRF24L01_00_EN_CRC)   // switch to RX mode and disable CRC
+												| (1 << NRF24L01_00_CRCO)
+												| (1 << NRF24L01_00_PWR_UP)
+												| (1 << NRF24L01_00_PRIM_RX));
+				phase=0;				// init timer
+			}
+			XN297Dump_overflow();
 			
-			XN297Dump_overflow();
-			// restart RX mode
-			NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
-			NRF24L01_SetTxRxMode(TXRX_OFF);
-			NRF24L01_SetTxRxMode(RX_EN);
-			NRF24L01_FlushRx();
-			NRF24L01_WriteReg(NRF24L01_00_CONFIG, (0 << NRF24L01_00_EN_CRC)   // switch to RX mode and disable CRC
-											| (1 << NRF24L01_00_CRCO)
-											| (1 << NRF24L01_00_PWR_UP)
-											| (1 << NRF24L01_00_PRIM_RX));
-			XN297Dump_overflow();
+			if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))
+			{ // RX fifo data ready
+				if(NRF24L01_ReadReg(NRF24L01_09_CD) || option != 0xFF)
+				{
+					NRF24L01_ReadPayload(packet,XN297DUMP_MAX_PACKET_LEN);
+					XN297Dump_overflow();
+					uint16_t timeL=TCNT1;
+					if(TIMER2_BASE->SR & TIMER_SR_UIF)
+					{//timer just rolled over...
+						XN297Dump_overflow();
+						timeL=0;
+					}
+					if((phase&0x01)==0)
+					{
+						phase=1;
+						time=0;
+					}
+					else
+						time=(timeH<<16)+timeL-time;
+					if(XN297Dump_process_packet())
+					{ // valid crc found
+						debug("RX: %5luus C=%d ", time>>1 , hopping_frequency_no);
+						time=(timeH<<16)+timeL;
+						if(enhanced)
+						{
+							debug("Enhanced ");
+							debug("pid=%d ",pid);
+							if(ack) debug("ack ");
+						}
+						debug("S=%c A=",scramble?'Y':'N');
+						for(uint8_t i=0; i<address_length; i++)
+						{
+							debug(" %02X",packet[i]);
+						}
+						debug(" P(%d)=",packet_length-address_length);
+						for(uint8_t i=address_length; i<packet_length; i++)
+						{
+							debug(" %02X",packet[i]);
+						}
+						debugln("");
+					}
+					else
+					{
+						debugln("RX: %5luus C=%d Bad CRC", time>>1 , hopping_frequency_no);
+					}
+				}
+				
+				XN297Dump_overflow();
+				// restart RX mode
+				NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
+				NRF24L01_SetTxRxMode(TXRX_OFF);
+				NRF24L01_SetTxRxMode(RX_EN);
+				NRF24L01_FlushRx();
+				NRF24L01_WriteReg(NRF24L01_00_CONFIG, (0 << NRF24L01_00_EN_CRC)   // switch to RX mode and disable CRC
+												| (1 << NRF24L01_00_CRCO)
+												| (1 << NRF24L01_00_PWR_UP)
+												| (1 << NRF24L01_00_PRIM_RX));
+				XN297Dump_overflow();
+			}
+		}
+		else
+		{
+			switch(phase)
+			{
+				case 0:
+					debugln("------------------------");
+					debugln("Detecting XN297 packets.");
+					XN297Dump_init();
+					debug("Trying RF channel: 0");
+					hopping_frequency_no=0;
+					bitrate=0;
+					phase++;
+					break;
+				case 1:
+					if(bind_counter>XN297DUMP_PERIOD_SCAN)
+					{	// Scan frequencies
+						hopping_frequency_no++;
+						bind_counter=0;
+						if(hopping_frequency_no>XN297DUMP_MAX_RF_CHANNEL)
+						{
+							hopping_frequency_no=0;
+							bitrate++;
+							bitrate%=3;
+							debugln("");
+							XN297Dump_init();
+							debug("Trying RF channel: 0");
+						}
+						if(hopping_frequency_no)
+							debug(",%d",hopping_frequency_no);
+						NRF24L01_WriteReg(NRF24L01_05_RF_CH,hopping_frequency_no);
+						// switch to RX mode
+						NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
+						NRF24L01_SetTxRxMode(TXRX_OFF);
+						NRF24L01_SetTxRxMode(RX_EN);
+						NRF24L01_FlushRx();
+						NRF24L01_WriteReg(NRF24L01_00_CONFIG, (0 << NRF24L01_00_EN_CRC)   // switch to RX mode and disable CRC
+														| (1 << NRF24L01_00_CRCO)
+														| (1 << NRF24L01_00_PWR_UP)
+														| (1 << NRF24L01_00_PRIM_RX));
+					}
+					if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))
+					{ // RX fifo data ready
+						if(NRF24L01_ReadReg(NRF24L01_09_CD))
+						{
+							NRF24L01_ReadPayload(packet,XN297DUMP_MAX_PACKET_LEN);
+							if(XN297Dump_process_packet())
+							{ // valid crc found
+								debug("\r\n\r\nPacket detected: bitrate=");
+								switch(bitrate)
+								{
+									case XN297DUMP_250K:
+										NRF24L01_SetBitrate(NRF24L01_BR_250K);
+										debug("250K");
+										break;
+									case XN297DUMP_2M:
+										NRF24L01_SetBitrate(NRF24L01_BR_2M);
+										debug("2M");
+										break;
+									default:
+										NRF24L01_SetBitrate(NRF24L01_BR_1M);
+										debug("1M");
+										break;
+
+								}
+								debug(" C=%d ", hopping_frequency_no);
+								if(enhanced)
+								{
+									debug("Enhanced ");
+									debug("pid=%d ",pid);
+									if(ack) debug("ack ");
+								}
+								debug("S=%c A=",scramble?'Y':'N');
+								for(uint8_t i=0; i<address_length; i++)
+								{
+									debug(" %02X",packet[i]);
+									rx_tx_addr[i]=packet[i];
+								}
+								debug(" P(%d)=",packet_length-address_length);
+								for(uint8_t i=address_length; i<packet_length; i++)
+								{
+									debug(" %02X",packet[i]);
+								}
+								packet_length=packet_length-address_length;
+								debugln("\r\n--------------------------------");
+								phase=2;
+								debugln("Identifying all RF channels in use.");
+								bind_counter=0;
+								hopping_frequency_no=0;
+								rf_ch_num=0;
+								packet_count=0;
+								debug("Trying RF channel: 0");
+								NRF24L01_Initialize();
+								XN297_SetScrambledMode(scramble?XN297_SCRAMBLED:XN297_UNSCRAMBLED);
+								XN297_SetTXAddr(rx_tx_addr,address_length);
+								XN297_SetRXAddr(rx_tx_addr,address_length);
+								NRF24L01_FlushRx();
+								NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);     	// Clear data ready, data sent, and retransmit
+								NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);      	// No Auto Acknowldgement on all data pipes
+								NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);  	// Enable data pipe 0 only
+								NRF24L01_WriteReg(NRF24L01_11_RX_PW_P0, packet_length + 2 + (enhanced?2:0) ); // 2 extra bytes for xn297 crc
+								NRF24L01_WriteReg(NRF24L01_05_RF_CH,0);
+								NRF24L01_SetTxRxMode(TXRX_OFF);
+								NRF24L01_FlushRx();
+								NRF24L01_SetTxRxMode(RX_EN);
+								XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP) | _BV(NRF24L01_00_PRIM_RX));
+							}
+						}
+					}
+					break;
+				case 2:
+					if(bind_counter>XN297DUMP_PERIOD_SCAN)
+					{	// Scan frequencies
+						hopping_frequency_no++;
+						bind_counter=0;
+						if(hopping_frequency_no>XN297DUMP_MAX_RF_CHANNEL)
+						{
+							debug("\r\n\r\n%d RF channels identified:",rf_ch_num);
+							for(uint8_t i=0;i<rf_ch_num;i++)
+								debug(" %d",hopping_frequency[i]);
+							time_rf=(uint32_t*)malloc(rf_ch_num*sizeof(time));
+							if(time_rf==NULL)
+							{
+								debugln("\r\nCan't allocate memory for next phase!!!");
+								phase=0;
+								break;
+							}
+							debugln("\r\n--------------------------------");
+							debugln("Identifying RF channels order.");
+							hopping_frequency_no=1;
+							phase=3;
+							packet_count=0;
+							bind_counter=0;
+							debugln("Time between CH:%d and CH:%d",hopping_frequency[0],hopping_frequency[hopping_frequency_no]);
+							time_rf[hopping_frequency_no]=-1;
+							NRF24L01_WriteReg(NRF24L01_05_RF_CH,hopping_frequency[0]);
+							uint16_t timeL=TCNT1;
+							if(TIMER2_BASE->SR & TIMER_SR_UIF)
+							{//timer just rolled over...
+								XN297Dump_overflow();
+								timeL=0;
+							}
+							time=(timeH<<16)+timeL;
+							NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
+							NRF24L01_SetTxRxMode(TXRX_OFF);
+							NRF24L01_SetTxRxMode(RX_EN);
+							NRF24L01_FlushRx();
+							NRF24L01_WriteReg(NRF24L01_00_CONFIG, (0 << NRF24L01_00_EN_CRC)   // switch to RX mode and disable CRC
+															| (1 << NRF24L01_00_CRCO)
+															| (1 << NRF24L01_00_PWR_UP)
+															| (1 << NRF24L01_00_PRIM_RX));
+							XN297Dump_overflow();
+							break;
+						}
+						debug(",%d",hopping_frequency_no);
+						NRF24L01_WriteReg(NRF24L01_05_RF_CH,hopping_frequency_no);
+						// switch to RX mode
+						NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
+						NRF24L01_SetTxRxMode(TXRX_OFF);
+						NRF24L01_SetTxRxMode(RX_EN);
+						NRF24L01_FlushRx();
+						XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP) | _BV(NRF24L01_00_PRIM_RX));
+					}
+					if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))
+					{ // RX fifo data ready
+						if(NRF24L01_ReadReg(NRF24L01_09_CD))
+						{
+							boolean res;
+							if(enhanced)
+								res=XN297_ReadEnhancedPayload(packet, packet_length);
+							else
+								res=XN297_ReadPayload(packet, packet_length);
+							if(res)
+							{ // valid crc found
+								XN297Dump_overflow();
+								uint16_t timeL=TCNT1;
+								if(TIMER2_BASE->SR & TIMER_SR_UIF)
+								{//timer just rolled over...
+									XN297Dump_overflow();
+									timeL=0;
+								}
+								if(packet_count==0)
+								{//save channel
+									hopping_frequency[rf_ch_num]=hopping_frequency_no;
+									rf_ch_num++;
+									time=0;
+								}
+								else
+									time=(timeH<<16)+timeL-time;
+								debug("\r\nRX on channel: %d, Time: %5luus P:",hopping_frequency_no, time>>1);
+								time=(timeH<<16)+timeL;
+								for(uint8_t i=0;i<packet_length;i++)
+									debug(" %02X",packet[i]);
+								packet_count++;
+								if(packet_count>5)
+								{
+									bind_counter=XN297DUMP_PERIOD_SCAN+1;
+									debug("\r\nTrying RF channel: ");
+									packet_count=0;
+								}
+							}
+						}
+						// restart RX mode
+						NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
+						NRF24L01_SetTxRxMode(TXRX_OFF);
+						NRF24L01_SetTxRxMode(RX_EN);
+						NRF24L01_FlushRx();
+						XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP) | _BV(NRF24L01_00_PRIM_RX));
+					}
+					XN297Dump_overflow();
+					break;
+				case 3:
+					if(bind_counter>XN297DUMP_PERIOD_SCAN)
+					{	// Scan frequencies
+						hopping_frequency_no++;
+						bind_counter=0;
+						if(hopping_frequency_no>=rf_ch_num)
+						{
+							uint8_t next=0;
+							debugln("\r\n\r\nChannel order:");
+							debugln("%d:     0us",hopping_frequency[0]);
+							uint8_t i=1;
+							do
+							{
+								time=time_rf[i];
+								if(time!=-1)
+								{
+									next=i;
+									for(uint8_t j=2;j<rf_ch_num;j++)
+										if(time>time_rf[j])
+										{
+											next=j;
+											time=time_rf[j];
+										}
+									time_rf[next]=-1;
+									debugln("%d: %5luus",hopping_frequency[next],time);
+									i=0;
+								}
+								i++;
+							}
+							while(i<rf_ch_num);
+							free(time_rf);
+							debugln("\r\n--------------------------------");
+							debugln("Identifying Sticks and features.");
+							phase=4;
+							hopping_frequency_no=0;
+							break;
+						}
+						debugln("Time between CH:%d and CH:%d",hopping_frequency[0],hopping_frequency[hopping_frequency_no]);
+						time_rf[hopping_frequency_no]=-1;
+						NRF24L01_WriteReg(NRF24L01_05_RF_CH,hopping_frequency[0]);
+						uint16_t timeL=TCNT1;
+						if(TIMER2_BASE->SR & TIMER_SR_UIF)
+						{//timer just rolled over...
+							XN297Dump_overflow();
+							timeL=0;
+						}
+						time=(timeH<<16)+timeL;
+						// switch to RX mode
+						NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
+						NRF24L01_SetTxRxMode(TXRX_OFF);
+						NRF24L01_SetTxRxMode(RX_EN);
+						NRF24L01_FlushRx();
+						XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP) | _BV(NRF24L01_00_PRIM_RX));
+					}
+					if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))
+					{ // RX fifo data ready
+						if(NRF24L01_ReadReg(NRF24L01_09_CD))
+						{
+							boolean res;
+							if(enhanced)
+								res=XN297_ReadEnhancedPayload(packet, packet_length);
+							else
+								res=XN297_ReadPayload(packet, packet_length);
+							if(res)
+							{ // valid crc found
+								XN297Dump_overflow();
+								uint16_t timeL=TCNT1;
+								if(TIMER2_BASE->SR & TIMER_SR_UIF)
+								{//timer just rolled over...
+									XN297Dump_overflow();
+									timeL=0;
+								}
+								if(packet_count&1)
+								{
+									time=(timeH<<16)+timeL-time;
+									if(time_rf[hopping_frequency_no] > (time>>1))
+										time_rf[hopping_frequency_no]=time>>1;
+									debugln("Time: %5luus", time>>1);
+									NRF24L01_WriteReg(NRF24L01_05_RF_CH,hopping_frequency[0]);
+								}
+								else
+								{
+									time=(timeH<<16)+timeL;
+									NRF24L01_WriteReg(NRF24L01_05_RF_CH,hopping_frequency[hopping_frequency_no]);
+								}
+								packet_count++;
+								if(packet_count>6)
+								{
+									bind_counter=XN297DUMP_PERIOD_SCAN+1;
+									packet_count=0;
+								}
+							}
+						}
+						// restart RX mode
+						NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
+						NRF24L01_SetTxRxMode(TXRX_OFF);
+						NRF24L01_SetTxRxMode(RX_EN);
+						NRF24L01_FlushRx();
+						XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP) | _BV(NRF24L01_00_PRIM_RX));
+					}
+					XN297Dump_overflow();
+					break;
+				case 4:
+					if( NRF24L01_ReadReg(NRF24L01_07_STATUS) & _BV(NRF24L01_07_RX_DR))
+					{ // RX fifo data ready
+						if(NRF24L01_ReadReg(NRF24L01_09_CD))
+						{
+							boolean res;
+							if(enhanced)
+								res=XN297_ReadEnhancedPayload(packet, packet_length);
+							else
+								res=XN297_ReadPayload(packet, packet_length);
+							if(res)
+							{ // valid crc found
+								if(memcmp(packet_in,packet,packet_length))
+								{
+									debug("P:");
+									for(uint8_t i=0;i<packet_length;i++)
+										debug(" %02X",packet[i]);
+									debugln("");
+									memcpy(packet_in,packet,packet_length);
+								}
+							}
+						}
+						// restart RX mode
+						NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);			// Clear data ready, data sent, and retransmit
+						NRF24L01_SetTxRxMode(TXRX_OFF);
+						NRF24L01_SetTxRxMode(RX_EN);
+						NRF24L01_FlushRx();
+						XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP) | _BV(NRF24L01_00_PRIM_RX));
+					}
+					break;
+			}
 		}
 		bind_counter++;
 		if(IS_RX_FLAG_on)					// Let the radio update the protocol
 		{
 			if(Update_All()) return 10000;	// New protocol selected
-			if(prev_option!=option)
+			if(prev_option!=option && sub_protocol<XN297DUMP_AUTO)
 			{	// option has changed
 				hopping_frequency_no=option;
 				prev_option=option;
@@ -274,6 +640,10 @@ static uint16_t XN297Dump_callback()
 uint16_t initXN297Dump(void)
 {
 	BIND_DONE;
+	if(sub_protocol<XN297DUMP_AUTO)
+		bitrate=sub_protocol;
+	else
+		bitrate=0;
 	address_length=RX_num;
 	if(address_length<3||address_length>5)
 		address_length=5;	//default
@@ -281,7 +651,7 @@ uint16_t initXN297Dump(void)
 	bind_counter=0;
 	rf_ch_num=0xFF;
 	prev_option=option^0x55;
-	phase=0;				// init timer
+	phase=0;				// init
 	return XN297DUMP_INITIAL_WAIT;
 }
 

Multiprotocol/XN297L_EMU.ino

@@ -1,223 +0,0 @@
-/*
- This project is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
-
- Multiprotocol is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include "iface_xn297l.h"
-
-#if defined (XN297L_CC2500_EMU)
-static void __attribute__((unused)) XN297L_Init()
-{
-	PE1_off; // antenna RF2
-	PE2_on;
-	CC2500_Reset();
-	CC2500_Strobe(CC2500_SIDLE);
-
-	// Address Config = No address check
-	// Base Frequency = 2400
-	// CRC Autoflush = false
-	// CRC Enable = false
-	// Channel Spacing = 333.251953
-	// Data Format = Normal mode
-	// Data Rate = 249.939
-	// Deviation = 126.953125
-	// Device Address = 0
-	// Manchester Enable = false
-	// Modulated = true
-	// Modulation Format = GFSK
-	// Packet Length Mode = Variable packet length mode. Packet length configured by the first byte after sync word
-	// RX Filter BW = 203.125000
-	// Sync Word Qualifier Mode = No preamble/sync
-	// TX Power = 0
-	// Whitening = false
-	// Fast Frequency Hopping - no PLL auto calibration
-
-	CC2500_WriteReg(CC2500_08_PKTCTRL0,	0x01);   // Packet Automation Control
-	CC2500_WriteReg(CC2500_0B_FSCTRL1,	0x0A);   // Frequency Synthesizer Control
-	CC2500_WriteReg(CC2500_0C_FSCTRL0, option);  // Frequency offset hack 
-	CC2500_WriteReg(CC2500_0D_FREQ2,	0x5C);   // Frequency Control Word, High Byte
-	CC2500_WriteReg(CC2500_0E_FREQ1,	0x4E);   // Frequency Control Word, Middle Byte
-	CC2500_WriteReg(CC2500_0F_FREQ0,	0xC3);   // Frequency Control Word, Low Byte
-	CC2500_WriteReg(CC2500_10_MDMCFG4,	0x8D);   // Modem Configuration
-	CC2500_WriteReg(CC2500_11_MDMCFG3,	0x3B);   // Modem Configuration
-	CC2500_WriteReg(CC2500_12_MDMCFG2,	0x10);   // Modem Configuration
-	CC2500_WriteReg(CC2500_13_MDMCFG1,	0x23);   // Modem Configuration
-	CC2500_WriteReg(CC2500_14_MDMCFG0,	0xA4);   // Modem Configuration
-	CC2500_WriteReg(CC2500_15_DEVIATN,	0x62);   // Modem Deviation Setting
-	CC2500_WriteReg(CC2500_18_MCSM0,	0x08);   // Main Radio Control State Machine Configuration
-	CC2500_WriteReg(CC2500_19_FOCCFG,	0x1D);   // Frequency Offset Compensation Configuration
-	CC2500_WriteReg(CC2500_1A_BSCFG,	0x1C);   // Bit Synchronization Configuration
-	CC2500_WriteReg(CC2500_1B_AGCCTRL2, 0xC7);   // AGC Control
-	CC2500_WriteReg(CC2500_1C_AGCCTRL1, 0x00);   // AGC Control
-	CC2500_WriteReg(CC2500_1D_AGCCTRL0, 0xB0);   // AGC Control
-	CC2500_WriteReg(CC2500_21_FREND1,	0xB6);   // Front End RX Configuration
-	CC2500_WriteReg(CC2500_23_FSCAL3,	0xEA);   // Frequency Synthesizer Calibration
-	CC2500_WriteReg(CC2500_25_FSCAL1,	0x00);   // Frequency Synthesizer Calibration
-	CC2500_WriteReg(CC2500_26_FSCAL0,	0x11);   // Frequency Synthesizer Calibration
-
-	CC2500_SetTxRxMode(TX_EN);
-	CC2500_SetPower();
-	xn297_scramble_enabled=XN297_SCRAMBLED;	//enabled by default
-}
-
-static void __attribute__((unused)) XN297L_SetTXAddr(const uint8_t* addr, uint8_t len)
-{
-	if (len > 5) len = 5;
-	if (len < 3) len = 3;
-	xn297_addr_len = len;
-	memcpy(xn297_tx_addr, addr, len);
-}
-
-static void __attribute__((unused)) XN297L_WritePayload(uint8_t* msg, uint8_t len)
-{
-	uint8_t buf[32];
-	uint8_t last = 0;
-	uint8_t i;
-	static const uint16_t initial = 0xb5d2;
-
-	// address
-	for (i = 0; i < xn297_addr_len; ++i)
-	{
-		buf[last] = xn297_tx_addr[xn297_addr_len - i - 1];
-		if(xn297_scramble_enabled)
-			buf[last] ^=  xn297_scramble[i];
-		last++;
-	}
-
-	// payload
-	for (i = 0; i < len; ++i) {
-		// bit-reverse bytes in packet
-		buf[last] = bit_reverse(msg[i]);
-		if(xn297_scramble_enabled)
-			buf[last] ^= xn297_scramble[xn297_addr_len+i];
-		last++;
-	}
-
-	// crc
-	uint16_t crc = initial;
-	for (uint8_t i = 0; i < last; ++i)
-		crc = crc16_update(crc, buf[i], 8);
-	if(xn297_scramble_enabled)
-		crc ^= pgm_read_word(&xn297_crc_xorout_scrambled[xn297_addr_len - 3 + len]);
-	else
-		crc ^= pgm_read_word(&xn297_crc_xorout[xn297_addr_len - 3 + len]);
-	buf[last++] = crc >> 8;
-	buf[last++] = crc & 0xff;
-
-	// stop TX/RX
-	CC2500_Strobe(CC2500_SIDLE);
-	// flush tx FIFO
-	CC2500_Strobe(CC2500_SFTX);
-	// packet length
-	CC2500_WriteReg(CC2500_3F_TXFIFO, last + 3);
-	// xn297L preamble
-	CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, (uint8_t*)"\x71\x0f\x55", 3);
-	// xn297 packet
-	CC2500_WriteRegisterMulti(CC2500_3F_TXFIFO, buf, last);
-	// transmit
-	CC2500_Strobe(CC2500_STX);
-}
-
-static void __attribute__((unused)) XN297L_HoppingCalib(uint8_t num_freq)
-{	//calibrate hopping frequencies
-	for (uint8_t i = 0; i < num_freq; i++)
-	{
-		CC2500_Strobe(CC2500_SIDLE);
-		CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[i]*3);
-		CC2500_Strobe(CC2500_SCAL);
-		delayMicroseconds(900);
-		calData[i]=CC2500_ReadReg(CC2500_25_FSCAL1);
-	}
-}
-
-static void __attribute__((unused)) XN297L_Hopping(uint8_t index)
-{
-	// spacing is 333.25 kHz, must multiply xn297 channel by 3
-	CC2500_WriteReg(CC2500_0A_CHANNR, hopping_frequency[index] * 3);
-	// set PLL calibration
-	CC2500_WriteReg(CC2500_25_FSCAL1, calData[index]);
-}
-
-static void __attribute__((unused)) XN297L_RFChannel(uint8_t number)
-{	//change channel
-	CC2500_Strobe(CC2500_SIDLE);
-	CC2500_WriteReg(CC2500_0A_CHANNR, number*3);
-	CC2500_Strobe(CC2500_SCAL);
-	delayMicroseconds(900);
-}
-
-static void __attribute__((unused)) XN297L_SetPower()
-{
-	CC2500_SetPower();
-}
-
-static void __attribute__((unused)) XN297L_SetFreqOffset()
-{	// Frequency offset
-	if (prev_option != option)
-	{
-		prev_option = option;
-		CC2500_WriteReg(CC2500_0C_FSCTRL0, option);
-	}
-}
-
-#elif defined (NRF24L01_INSTALLED)
-
-static void __attribute__((unused)) XN297L_Init()
-{
-	NRF24L01_Initialize();
-	NRF24L01_SetTxRxMode(TX_EN);
-	NRF24L01_FlushTx();
-	NRF24L01_FlushRx();
-	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);	// Clear data ready, data sent, and retransmit
-	NRF24L01_WriteReg(NRF24L01_01_EN_AA, 0x00);		// No Auto Acknowldgement on all data pipes
-	NRF24L01_WriteReg(NRF24L01_02_EN_RXADDR, 0x01);	// Enable data pipe 0 only
-	NRF24L01_SetBitrate(NRF24L01_BR_250K);			// 250Kbps
-	NRF24L01_SetPower();
-}
-
-static void __attribute__((unused)) XN297L_SetTXAddr(const uint8_t* addr, uint8_t len)
-{
-	XN297_SetTXAddr(addr,len);
-}
-
-static void __attribute__((unused)) XN297L_WritePayload(uint8_t* msg, uint8_t len)
-{
-	XN297_Configure(_BV(NRF24L01_00_EN_CRC) | _BV(NRF24L01_00_CRCO) | _BV(NRF24L01_00_PWR_UP));
-	NRF24L01_WriteReg(NRF24L01_07_STATUS, 0x70);
-	NRF24L01_FlushTx();
-	XN297_WritePayload(msg, len);
-}
-
-static void __attribute__((unused)) XN297L_HoppingCalib(__attribute__((unused)) uint8_t num_freq)
-{	//calibrate hopping frequencies
-}
-
-static void __attribute__((unused)) XN297L_Hopping(uint8_t index)
-{
-	NRF24L01_WriteReg(NRF24L01_05_RF_CH, hopping_frequency[index]);
-}
-
-static void __attribute__((unused)) XN297L_RFChannel(uint8_t number)
-{	//change channel
-	NRF24L01_WriteReg(NRF24L01_05_RF_CH, number);
-}
-
-static void __attribute__((unused)) XN297L_SetPower()
-{
-	NRF24L01_SetPower();
-}
-
-static void __attribute__((unused)) XN297L_SetFreqOffset()
-{	// Frequency offset
-}
-
-#endif

Multiprotocol/YD717_nrf24l01.ino

@@ -155,7 +155,12 @@ static void __attribute__((unused)) yd717_init()
 uint16_t yd717_callback()
 {
 	if(IS_BIND_DONE)
+	{
+		#ifdef MULTI_SYNC
+			telemetry_set_input_sync(YD717_PACKET_PERIOD);
+		#endif
 		yd717_send_packet(0);
+	}
 	else
 	{
 		if (bind_counter == 0)

Multiprotocol/ZSX_nrf24l01.ino

@@ -16,7 +16,7 @@ Multiprotocol is distributed in the hope that it will be useful,
 
 #if defined(ZSX_NRF24L01_INO)
 
-#include "iface_xn297l.h"
+#include "iface_nrf250k.h"
 
 //#define FORCE_ZSX_ORIGINAL_ID
 
@@ -80,6 +80,9 @@ static void __attribute__((unused)) ZSX_init()
 
 uint16_t ZSX_callback()
 {
+	#ifdef MULTI_SYNC
+		telemetry_set_input_sync(ZSX_PACKET_PERIOD);
+	#endif
 	if(IS_BIND_IN_PROGRESS)
 		if(--bind_counter==0)
 		{

Multiprotocol/_Config.h

@@ -54,7 +54,7 @@
 /*** AUTO BIND ***/  // Also referred as "Bind on powerup"
 /*****************/
 //Bind from channel enables you to bind when a specified channel is going from low to high. This feature is only active
-// if you specify AUTOBIND in PPM mode or set AutoBind to YES for serial mode. It also requires that the throttle channel is low.
+// if you specify AUTOBIND in PPM mode or set AutoBind to YES for serial mode.
 //Comment to globaly disable the bind feature from a channel.
 #define ENABLE_BIND_CH
 //Set the channel number used for bind. Default is 16.
@@ -77,9 +77,7 @@
 #define CYRF6936_INSTALLED
 #define CC2500_INSTALLED
 #define NRF24L01_INSTALLED
-
-//If available use the CC2500 to emulate the XN297L @250Kbps instead of the NRF24L01. Comment to disable.
-#define XN297L_CC2500_EMU
+//#define SX1276_INSTALLED		// only supported on STM32 modules
 
 /** OrangeRX TX **/
 //If you compile for the OrangeRX TX module you need to select the correct board type.
@@ -87,17 +85,20 @@
 //#define ORANGE_TX_BLUE
 
 /** CC2500 Fine Frequency Tuning **/
-//For optimal performance the CC2500 RF module used by the FrSkyD, FrSkyV, FrSkyX, SFHSS, CORONA, Redpine and Hitec protocols needs to be tuned for each protocol.
-//Initial tuning should be done via the radio menu with a genuine FrSky/Futaba/CORONA/Hitec/Redpine receiver.  
+//For optimal performance the CC2500 RF module used by the CORONA, FrSkyD, FrSkyV, FrSkyX, Hitec, HoTT, SFHSS and Redpine protocols needs to be tuned for each protocol.
+//Initial tuning should be done via the radio menu with a genuine CORONA/FrSky/Hitec/HoTT/Futaba/Redpine receiver.  
 //Once a good tuning value is found it can be set here and will override the radio's 'option' setting for all existing and new models which use that protocol.
 //For more information: https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/tree/master/docs/Frequency_Tuning.md
 //Uncomment the lines below (remove the "//") and set an appropriate value (replace the "0") to enable. Valid range is -127 to +127.
+//#define FORCE_CORONA_TUNING	0
 //#define FORCE_FRSKYD_TUNING	0
+//#define FORCE_FRSKYL_TUNING	0
 //#define FORCE_FRSKYV_TUNING	0
 //#define FORCE_FRSKYX_TUNING	0
 //#define FORCE_SFHSS_TUNING	0
-//#define FORCE_CORONA_TUNING	0
+//#define FORCE_SKYARTEC_TUNING	0
 //#define FORCE_HITEC_TUNING	0
+//#define FORCE_HOTT_TUNING		0
 //#define FORCE_REDPINE_TUNING	0
 
 /** A7105 Fine Frequency Tuning **/
@@ -112,6 +113,7 @@
 //#define FORCE_BUGS_TUNING		0
 //#define FORCE_FLYSKY_TUNING	0
 //#define FORCE_FLYZONE_TUNING	0
+//#define FORCE_PELIKAN_TUNING	0
 //#define FORCE_HUBSAN_TUNING	0
 
 /** CYRF6936 Fine Frequency Tuning **/
@@ -139,6 +141,7 @@
 //If you have 2 Multi modules which you want to share the same ID so you can use either to control the same RC model
 // then you can force the ID to a certain known value using the lines below.
 //Default is commented, you should uncoment only for test purpose or if you know exactly what you are doing!!!
+//The 8 numbers below can be anything between 0...9 and A..F
 //#define FORCE_GLOBAL_ID	0x12345678
 
 //Protocols using the CYRF6936 (DSM, Devo, Walkera...) are using the CYRF ID instead which should prevent duplicated IDs.
@@ -162,6 +165,7 @@
 #define	FLYSKY_A7105_INO
 #define	FLYZONE_A7105_INO
 #define	HUBSAN_A7105_INO
+#define PELIKAN_A7105_INO
 
 //The protocols below need a CYRF6936 to be installed
 #define	DEVO_CYRF6936_INO
@@ -173,18 +177,22 @@
 
 //The protocols below need a CC2500 to be installed
 #define	CORONA_CC2500_INO
+#define	FRSKYL_CC2500_INO
 #define	FRSKYD_CC2500_INO
 #define	FRSKYV_CC2500_INO
 #define	FRSKYX_CC2500_INO
-#define	FRSKYX_RX_CC2500_INO
+#define	FRSKY_RX_CC2500_INO
 #define	HITEC_CC2500_INO
+#define	HOTT_CC2500_INO
 #define	SCANNER_CC2500_INO
 #define	SFHSS_CC2500_INO
+#define	SKYARTEC_CC2500_INO
 #define	REDPINE_CC2500_INO
 
 //The protocols below need a NRF24L01 to be installed
 #define	ASSAN_NRF24L01_INO
 #define	BAYANG_NRF24L01_INO
+#define	BAYANG_RX_NRF24L01_INO
 #define	BUGSMINI_NRF24L01_INO
 #define	CABELL_NRF24L01_INO
 #define	CFLIE_NRF24L01_INO
@@ -195,6 +203,7 @@
 #define	ESKY_NRF24L01_INO
 #define	ESKY150_NRF24L01_INO
 #define	FQ777_NRF24L01_INO
+#define	FX816_NRF24L01_INO
 #define	FY326_NRF24L01_INO
 #define	GD00X_NRF24L01_INO
 #define	GW008_NRF24L01_INO
@@ -207,16 +216,21 @@
 #define	MT99XX_NRF24L01_INO
 #define	NCC1701_NRF24L01_INO
 #define	POTENSIC_NRF24L01_INO
+#define	PROPEL_NRF24L01_INO
 #define	Q303_NRF24L01_INO
 #define	SHENQI_NRF24L01_INO
 #define	SLT_NRF24L01_INO
 #define	SYMAX_NRF24L01_INO
+#define	TIGER_NRF24L01_INO
 #define	V2X2_NRF24L01_INO
 #define	V761_NRF24L01_INO
 #define	V911S_NRF24L01_INO
+#define	XK_NRF24L01_INO
 #define	YD717_NRF24L01_INO
 #define	ZSX_NRF24L01_INO
 
+//The protocols below need a SX1276 to be installed
+//#define FRSKYR9_SX1276_INO
 
 /***************************/
 /*** PROTOCOLS SETTINGS  ***/
@@ -230,7 +244,7 @@
 //Some models (X-Vert, Blade 230S...) require a special value to instant stop the motor(s).
 // You can disable this feature by adding "//" on the line below. You have to specify which channel (14 by default) will be used to kill the throttle channel.
 // If the channel 14 is above -50% the throttle is untouched but if it is between -50% and -100%, the throttle output will be forced between -100% and -150%.
-// For example, a value of -80% applied on channel 15 will instantly kill the motors on the X-Vert.
+// For example, a value of -80% applied on channel 14 will instantly kill the motors on the X-Vert.
 #define DSM_THROTTLE_KILL_CH 14 
 
 //AFHDS2A specific settings
@@ -258,24 +272,28 @@
 
 //Comment to invert the polarity of the output telemetry serial signal.
 //This function takes quite some flash space and processor power on an atmega.
-//For OpenTX it must be uncommented.
-//On a 9XR_PRO running ersky9x both commented and uncommented will work depending on the radio setting Invert COM1 under the Telemetry menu.
-//On other addon/replacement boards like the 9xtreme board or the Ar9x board running ersky9x, you need to uncomment the line below.
+//For a Taranis/T16 with an external module it must be uncommented. For a T16 internal module it must be commented.
+//A 9XR_PRO running erskyTX will work with both commented and uncommented depending on the radio setting Invert COM1 under the Telemetry menu.
+//On other addon/replacement boards like the 9xtreme board or the Ar9x board running erskyTX, you need to uncomment the line below.
 //For er9x it depends if you have an inveter mod or not on the telemetry pin. If you don't have an inverter comment this line.
 #define INVERT_TELEMETRY
+//For STM32 and OrangeRX modules, comment to prevent the TX from forcing the serial telemetry polarity normal/invert.
+#define INVERT_TELEMETRY_TX
 
-//Comment if you don't want to send Multi status telemetry frames (Protocol available, Bind in progress, version...)
-//Use with er9x/erksy9x, for OpenTX MULTI_TELEMETRY below is preferred instead
+//Uncomment if you want to send Multi status telemetry frames (Protocol available, Bind in progress, version...)
+//Use with er9x/erskyTX, for OpenTX you must select MULTI_TELEMETRY below
 //#define MULTI_STATUS
 
-//Uncomment to send Multi status and allow OpenTX to autodetect the telemetry format
-//Supported by OpenTX version 2.2 RC9 and newer. NOT supported by er9x/ersky9x use MULTI_STATUS instead.
+//Sends Multi status and allow OpenTX to autodetect the telemetry format. Comment to disable.
+//Supported by OpenTX version 2.2 RC9 and newer. NOT supported by er9x/erskyTX use MULTI_STATUS instead.
 #define MULTI_TELEMETRY
+//Work in progress: Sync OpenTX frames with the current protocol timing. This feature is only available on the STM32 module. Uncomment to enable.
+//#define MULTI_SYNC
 
 //Comment a line to disable a specific protocol telemetry
-#define DSM_TELEMETRY				// Forward received telemetry packet directly to TX to be decoded by er9x, ersky9x and OpenTX
-#define SPORT_TELEMETRY				// Use FrSkyX SPORT format to send telemetry to TX
-#define AFHDS2A_FW_TELEMETRY		// Forward received telemetry packet directly to TX to be decoded by ersky9x and OpenTX
+#define DSM_TELEMETRY				// Forward received telemetry packet directly to TX to be decoded by er9x, erskyTX and OpenTX
+#define SPORT_TELEMETRY				// Use FrSkyX format to send/receive telemetry
+#define AFHDS2A_FW_TELEMETRY		// Forward received telemetry packet directly to TX to be decoded by erskyTX and OpenTX
 #define AFHDS2A_HUB_TELEMETRY		// Use FrSkyD Hub format to send basic telemetry to TX like er9x
 #define HUB_TELEMETRY				// Use FrSkyD Hub format to send telemetry to TX
 #define BAYANG_HUB_TELEMETRY		// Use FrSkyD Hub format to send telemetry to TX
@@ -283,18 +301,13 @@
 #define HUBSAN_HUB_TELEMETRY		// Use FrSkyD Hub format to send telemetry to TX
 #define NCC1701_HUB_TELEMETRY		// Use FrSkyD Hub format to send telemetry to TX
 #define CABELL_HUB_TELEMETRY		// Use FrSkyD Hub format to send telemetry to TX
-#define HITEC_HUB_TELEMETRY			// Use FrSkyD Hub format to send basic telemetry to the radios which can decode it like er9x, ersky9x and OpenTX
-#define HITEC_FW_TELEMETRY			// Under development: Forward received telemetry packets to be decoded by ersky9x and OpenTX
+#define HITEC_HUB_TELEMETRY			// Use FrSkyD Hub format to send basic telemetry to the radios which can decode it like er9x, erskyTX and OpenTX
+#define HITEC_FW_TELEMETRY			// Forward received telemetry packets to be decoded by erskyTX and OpenTX
 #define SCANNER_TELEMETRY			// Forward spectrum scanner data to TX
-#define FRSKYX_RX_TELEMETRY			// Forward channels data to TX
+#define FRSKY_RX_TELEMETRY			// Forward channels data to TX
 #define AFHDS2A_RX_TELEMETRY		// Forward channels data to TX
-
-//SPORT_POLLING is an implementation of the same polling routine as XJT module for sport telemetry bidirectional communication.
-//This is useful for passing sport control frames from TX to RX(ex: changing Betaflight PID or VTX channels on the fly using LUA scripts with OpentX).
-//Using this feature requires to uncomment INVERT_TELEMETRY as this TX output on telemetry pin only inverted signal.
-//!!!! This is a work in progress!!! Do not enable unless you want to test and report
-//#define SPORT_POLLING
-
+#define HOTT_FW_TELEMETRY			// Forward received telemetry packets to be decoded by erskyTX and OpenTX
+#define BAYANG_RX_TELEMETRY			// Forward channels data to TX
 
 /****************************/
 /*** SERIAL MODE SETTINGS ***/
@@ -345,6 +358,10 @@
 // The default value is 16 to receive all possible channels but you might want to filter some "bad" channels from the PPM frame like the ones above 6 on the Walkera PL0811.
 #define MAX_PPM_CHANNELS 16
 
+/** Telemetry **/
+//Send simple FrSkyX telemetry using the FrSkyD telemetry format
+#define TELEMETRY_FRSKYX_TO_FRSKYD
+
 /** Rotary Switch Protocol Selector Settings **/
 //The table below indicates which protocol to run when a specific position on the rotary switch has been selected.
 //All fields and values are explained below. Everything is configurable from here like in the Serial mode.
@@ -488,6 +505,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		X16_AH
 		IRDRONE
 		DHD_D4
+	PROTO_BAYANG_RX
+		NONE
 	PROTO_BUGS
 		NONE
 	PROTO_BUGSMINI
@@ -528,9 +547,11 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		E015
 		E016H
 	PROTO_ESKY
-		NONE
+		ESKY_STD
+		ESKY_ET4
 	PROTO_ESKY150
-		NONE
+		ESKY150_4CH
+		ESKY150_7CH
 	PROTO_FLYSKY
 		Flysky
 		V9X9
@@ -541,8 +562,20 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		FZ410
 	PROTO_FQ777
 		NONE
+	PROTO_FRSKY_RX
+		FRSKY_RX
+		FRSKY_CLONE
 	PROTO_FRSKYD
-		NONE
+		FRSKYD
+		DCLONE
+	PROTO_FRSKYL
+		LR12
+		LR12_6CH
+	PROTO_FRSKYR9
+		R9_915
+		R9_868
+		R9_915_8CH
+		R9_868_8CH
 	PROTO_FRSKYV
 		NONE
 	PROTO_FRSKYX
@@ -550,9 +583,18 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		CH_8
 		EU_16
 		EU_8
-	PROTO_FRSKYX_RX
-		FRSKYX_FCC
-		FRSKYX_LBT
+		XCLONE
+	PROTO_FRSKYX2
+		CH_16
+		CH_8
+		EU_16
+		EU_8
+		XCLONE
+	PROTO_FRSKY_RX
+		FRSKY_RX
+		FRSKY_CLONE
+	PROTO_FX816
+		NONE
 	PROTO_FY326
 		FY326
 		FY319
@@ -578,6 +620,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		JJRCX1
 		X5C1
 		FQ777_951
+	PROTO_HOTT
+		NONE
 	PROTO_HUBSAN
 		H107
 		H301
@@ -605,8 +649,12 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		FY805
 	PROTO_NCC1701
 		NONE
+	PROTO_PELIKAN
+		NONE
 	PROTO_POTENSIC
 		NONE
+	PROTO_PROPEL
+		NONE
 	PROTO_Q2X2
 		Q222
 		Q242
@@ -625,6 +673,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		NONE
 	PROTO_SHENQI
 		NONE
+	PROTO_SKYARTEC
+		NONE
 	PROTO_SLT
 		SLT_V1
 		SLT_V2
@@ -634,6 +684,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 	PROTO_SYMAX
 		SYMAX
 		SYMAX5C
+	PROTO_TIGER
+		NONE
 	PROTO_TRAXXAS
 		RX6519
 	PROTO_V2X2
@@ -642,7 +694,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 	PROTO_V761
 		NONE
 	PROTO_V911S
-		NONE
+		V911S_STD
+		V911S_E119
 	PROTO_WFLY
 		NONE
 	PROTO_WK2x01
@@ -652,6 +705,9 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		W6_6_1
 		W6_HEL
 		W6_HEL_I
+	PROTO_XK
+		X450
+		X420
 	PROTO_YD717
 		YD717
 		SKYWLKR
@@ -661,3 +717,29 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 	PROTO_ZSX
 		NONE
 */
+
+/**********************************/
+/*** DIRECT INPUTS SETTINGS ***/
+/**********************************/
+//In this section you can configure the direct inputs.
+//It enables switches wired directly to the board
+//Direct inputs works only in ppm mode and only for stm_32 boards
+//Uncomment following lines to enable derect inputs or define your own configuration in _MyConfig.h
+/*
+#define ENABLE_DIRECT_INPUTS
+		
+#define DI1_PIN				PC13	
+#define IS_DI1_on			(digitalRead(DI1_PIN)==LOW)
+
+#define DI2_PIN				PC14	
+#define IS_DI2_on			(digitalRead(DI2_PIN)==LOW)
+
+#define DI3_PIN				PC15	
+#define IS_DI3_on			(digitalRead(DI3_PIN)==LOW)
+
+//Define up to 4 direct input channels
+//CHANNEL1 - 2pos switch
+#define DI_CH1_read			IS_DI1_on ? PPM_MAX_100*2 : PPM_MIN_100*2
+//CHANNEL2 - 3pos switch
+#define DI_CH2_read			IS_DI2_on ? PPM_MAX_100*2 : (IS_DI2_on ? PPM_MAX_100 + PPM_MIN_100 : PPM_MIN_100*2)
+*/

Multiprotocol/iface_nrf250k.h

@@ -0,0 +1,34 @@
+#ifndef _IFACE_NRF250K_H_
+
+#define _IFACE_NRF250K_H_
+
+#if defined (CC2500_INSTALLED)
+	#include "iface_cc2500.h"
+#endif
+#if defined (NRF24L01_INSTALLED)
+	#include "iface_nrf24l01.h"
+#endif
+
+//XN297L
+static void __attribute__((unused)) XN297L_Init();
+static void __attribute__((unused)) XN297L_SetTXAddr(const uint8_t*, uint8_t);
+static void __attribute__((unused)) XN297L_WritePayload(uint8_t*, uint8_t);
+static void __attribute__((unused)) XN297L_WriteEnhancedPayload(uint8_t*, uint8_t, uint8_t);
+static void __attribute__((unused)) XN297L_HoppingCalib(__attribute__((unused)) uint8_t);
+static void __attribute__((unused)) XN297L_Hopping(uint8_t);
+static void __attribute__((unused)) XN297L_RFChannel(uint8_t);
+static void __attribute__((unused)) XN297L_SetPower();
+static void __attribute__((unused)) XN297L_SetFreqOffset();
+
+//NRF250K
+#define NRF250K_Init() XN297L_Init()
+#define NRF250K_HoppingCalib(X) XN297L_HoppingCalib(X)
+#define NRF250K_Hopping(X) XN297L_Hopping(X)
+#define NRF250K_RFChannel(X) XN297L_RFChannel(X)
+#define NRF250K_SetPower() XN297L_SetPower()
+#define NRF250K_SetFreqOffset() XN297L_SetFreqOffset()
+static void __attribute__((unused)) NRF250K_SetTXAddr(uint8_t*, uint8_t);
+static void __attribute__((unused)) NRF250K_WritePayload(uint8_t*, uint8_t);
+static boolean __attribute__((unused)) NRF250K_IsPacketSent();
+
+#endif

Multiprotocol/iface_sx1276.h

@@ -0,0 +1,90 @@
+/*
+ This project is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Multiprotocol is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef _IFACE_SX1276_H_
+#define _IFACE_SX1276_H_
+
+enum
+{
+    SX1276_00_FIFO                  = 0x00,        
+    SX1276_01_OPMODE                = 0x01,
+    SX1276_06_FRFMSB                = 0x06,
+    SX1276_09_PACONFIG              = 0x09,
+    SX1276_0B_OCP                   = 0x0B,
+    SX1276_0C_LNA                   = 0x0C,
+    SX1276_0D_FIFOADDRPTR           = 0x0D,
+    SX1276_0E_FIFOTXBASEADDR        = 0x0E,
+    SX1276_11_IRQFLAGSMASK          = 0x11,
+    SX1276_1D_MODEMCONFIG1          = 0x1D,
+    SX1276_1E_MODEMCONFIG2          = 0x1E,
+    SX1276_20_PREAMBLEMSB           = 0x20,
+    SX1276_22_PAYLOAD_LENGTH        = 0x22,
+    SX1276_24_HOPPERIOD             = 0x24,
+    SX1276_26_MODEMCONFIG3          = 0x26,
+    SX1276_31_DETECTOPTIMIZE        = 0x31,
+    SX1276_37_DETECTIONTHRESHOLD    = 0x37,
+    SX1276_40_DIOMAPPING1           = 0x40,
+    SX1276_42_VERSION               = 0x42,
+    SX1276_4D_PADAC                 = 0x4D
+};
+
+enum
+{
+    SX1276_OPMODE_SLEEP = 0,
+    SX1276_OPMODE_STDBY,
+    SX1276_OPMODE_FSTX,
+    SX1276_OPMODE_TX,
+    SX1276_OPMODE_FSRX,
+    SX1276_OPMODE_RXCONTINUOUS,
+    SX1276_OPMODE_RXSINGLE,
+    SX1276_OPMODE_CAD
+};
+
+enum
+{
+    SX1276_DETECT_OPTIMIZE_SF7_TO_SF12 = 0x03,
+    SX1276_DETECT_OPTIMIZE_SF6 = 0x05
+};
+
+enum
+{
+    SX1276_MODEM_CONFIG1_BW_7_8KHZ = 0,
+    SX1276_MODEM_CONFIG1_BW_10_4KHZ,
+    SX1276_MODEM_CONFIG1_BW_15_6KHZ,
+    SX1276_MODEM_CONFIG1_BW_20_8KHZ,
+    SX1276_MODEM_CONFIG1_BW_31_25KHZ,
+    SX1276_MODEM_CONFIG1_BW_41_7KHZ,
+    SX1276_MODEM_CONFIG1_BW_62_5KHZ,
+    SX1276_MODEM_CONFIG1_BW_125KHZ,
+    SX1276_MODEM_CONFIG1_BW_250KHZ,
+    SX1276_MODEM_CONFIG1_BW_500KHZ
+};
+
+enum
+{
+    SX1276_MODEM_CONFIG1_CODING_RATE_4_5 = 1,
+    SX1276_MODEM_CONFIG1_CODING_RATE_4_6,
+    SX1276_MODEM_CONFIG1_CODING_RATE_4_7,
+    SX1276_MODEM_CONFIG1_CODING_RATE_4_8
+};
+
+enum
+{
+    SX1276_MODEM_DETECTION_THRESHOLD_SF7_TO_SF12 = 0x0A,
+    SX1276_MODEM_DETECTION_THRESHOLD_SF6 = 0x0C,
+
+};
+
+#endif

Multiprotocol/iface_xn297l.h

@@ -1,20 +0,0 @@
-#ifndef _IFACE_XN297L_H_
-
-#define _IFACE_XN297L_H_
-
-#if defined (XN297L_CC2500_EMU)
-	#include "iface_cc2500.h"
-#elif defined (NRF24L01_INSTALLED)
-	#include "iface_nrf24l01.h"
-#endif
-
-static void __attribute__((unused)) XN297L_Init();
-static void __attribute__((unused)) XN297L_SetTXAddr(const uint8_t*, uint8_t);
-static void __attribute__((unused)) XN297L_WritePayload(uint8_t*, uint8_t);
-static void __attribute__((unused)) XN297L_HoppingCalib(__attribute__((unused)) uint8_t);
-static void __attribute__((unused)) XN297L_Hopping(uint8_t);
-static void __attribute__((unused)) XN297L_RFChannel(uint8_t);
-static void __attribute__((unused)) XN297L_SetPower();
-static void __attribute__((unused)) XN297L_SetFreqOffset();
-
-#endif

Protocols_Details.md

@@ -22,14 +22,13 @@ Here are detailed descriptions of every supported protocols (sorted by RF module
       - Bind channel is going from -100% to +100%
 
 * Additional notes:
-  - It's recommended to combine Throttle cut with another button to drive the bind channel. This will prevent to launch a bind while flying...
-  - Bind channel does not have to be assigned to a free channel. Since it only acts when Throttle is Low (and throttle cut active), it could be used on the same channel as Flip for example since you are not going to flip your model when Throttle is low... Same goes for RTH and such other features.
+  - **It's recommended to combine the bind switch with Throttle cut or throttle at -100% to drive the bind channel. This will prevent to launch a bind while flying** and enable you to use the bind switch for something else.
   - Using channel 16 for the bind channel seems the most relevant as only one protocol so far is using 16 channels which is FrSkyX. But even on FrSkyX this feature won't have any impact since there is NO valid reason to have Autobind set to Y for such a protocol.
 
 ## Protocol selection in PPM mode
 The protocol selection is based on 2 parameters:
   * selection switch: this is the rotary switch on the module numbered from 0 to 15
-      - switch position 0 is to select the Serial mode for er9x/ersky9x/OpenTX radio
+      - switch position 0 is to select the Serial mode for er9x/erskyTX/OpenTX radio
       - switch position 15 is to select the bank
 	  - switch position 1..14 will select the protocol 1..14 in the bank *X*
   * banks are used to increase the amount of accessible protocols by the switch. There are up to 5 banks giving acces to up to 70 protocol entries (5 * 14).  To modify or verify which bank is currenlty active do the following:
@@ -56,7 +55,7 @@ Notes:
 Serial mode is selected by placing the rotary switch to position 0 before power on of the radio.
 
 You've upgraded the module but the radio does not display the name of the protocol you are loking for:
- * ersky9x:
+ * erskyTX:
       - Place the file [Multi.txt](https://raw.githubusercontent.com/pascallanger/DIY-Multiprotocol-TX-Module/master/Multiprotocol/Multi.txt) (which is part of the MPM source files) on the root of your SD card.
       - If the entry still does not appear or is broken, [upgrade](https://openrcforums.com/forum/viewtopic.php?f=7&t=4676) to version R222d2 or newer.
  * OpenTX:
@@ -69,6 +68,7 @@ Protocol Name|Protocol Number|Sub_Proto 0|Sub_Proto 1|Sub_Proto 2|Sub_Proto 3|Su
 ---|---|---|---|---|---|---|---|---|---|---|---
 [Assan](Protocols_Details.md#ASSAN---24)|24|ASSAN||||||||NRF24L01|
 [Bayang](Protocols_Details.md#BAYANG---14)|14|Bayang|H8S3D|X16_AH|IRDRONE|DHD_D4||||NRF24L01|XN297
+[Bayang RX](Protocols_Details.md#BAYANG-RX---59)|59|||||||||NRF24L01|XN297
 [Bugs](Protocols_Details.md#BUGS---41)|41|BUGS||||||||A7105|
 [BugsMini](Protocols_Details.md#BUGSMINI---42)|42|BUGSMINI|BUGS3H|||||||NRF24L01|XN297
 [Cabell](Protocols_Details.md#Cabell---34)|34|Cabell_V3|C_TELEM|-|-|-|-|F_SAFE|UNBIND|NRF24L01|
@@ -80,16 +80,21 @@ CFlie|38|CFlie||||||||NRF24L01|
 [DM002](Protocols_Details.md#DM002---33)|33|DM002||||||||NRF24L01|XN297
 [DSM](Protocols_Details.md#DSM---6)|6|DSM2-22|DSM2-11|DSMX-22|DSMX-11|AUTO||||CYRF6936|
 [E01X](Protocols_Details.md#E01X---45)|45|E012|E015|E016H||||||NRF24L01|XN297/HS6200
-[ESky](Protocols_Details.md#ESKY---16)|16|ESky||||||||NRF24L01|
+[ESky](Protocols_Details.md#ESKY---16)|16|ESky|Std|ET4||||||NRF24L01|
 [ESky150](Protocols_Details.md#ESKY150---35)|35|ESKY150||||||||NRF24L01|
 [Flysky](Protocols_Details.md#FLYSKY---1)|1|Flysky|V9x9|V6x6|V912|CX20||||A7105|
 [Flysky AFHDS2A](Protocols_Details.md#FLYSKY-AFHDS2A---28)|28|PWM_IBUS|PPM_IBUS|PWM_SBUS|PPM_SBUS|||||A7105|
+[Flysky AFHDS2A RX](Protocols_Details.md#FLYSKY-AFHDS2A-RX---56)|56|||||||||A7105|
 [Flyzone](Protocols_Details.md#FLYZONE---53)|53|FZ410||||||||A7105|
-[FQ777](Protocols_Details.md#FQ777---23)|23|FQ777||||||||NRF24L01|SSV7241
-[FrskyD](Protocols_Details.md#FRSKYD---3)|3|FrskyD||||||||CC2500|
+[FQ777](Protocols_Details.md#FQ777---23)|23|||||||||NRF24L01|SSV7241
+[FrskyD](Protocols_Details.md#FRSKYD---3)|3|D8|Cloned|||||||CC2500|
+[FrskyL](Protocols_Details.md#FRSKYL---67)|67|LR12|LR12 6CH|||||||CC2500|
+[FrskyR9](Protocols_Details.md#FRSKYR9---65)|65|FrskyR9|R9_915|R9_868||||||SX1276|
 [FrskyV](Protocols_Details.md#FRSKYV---25)|25|FrskyV||||||||CC2500|
-[FrskyX](Protocols_Details.md#FRSKYX---15)|15|CH_16|CH_8|EU_16|EU_8|||||CC2500|
-[FrskyX_RX](Protocols_Details.md#FRSKYX_RX---55)|55|FCC|EU_LBT|||||CC2500|
+[FrskyX](Protocols_Details.md#FRSKYX---15)|15|CH_16|CH_8|EU_16|EU_8|Cloned||||CC2500|
+[FrskyX2](Protocols_Details.md#FRSKYX2---64)|64|CH_16|CH_8|EU_16|EU_8|Cloned||||CC2500|
+[Frsky_RX](Protocols_Details.md#FRSKY_RX---55)|55|RX|CloneTX|||||||CC2500|
+[FX816](Protocols_Details.md#FX816---58)|28|FX816|P38|||||||NRF24L01|
 [FY326](Protocols_Details.md#FY326---20)|20|FY326|FY319|||||||NRF24L01|
 [GD00X](Protocols_Details.md#GD00X---47)|47|GD_V1*|GD_V2*|||||||NRF24L01|
 [GW008](Protocols_Details.md#GW008---32)|32|GW008||||||||NRF24L01|XN297
@@ -97,6 +102,7 @@ CFlie|38|CFlie||||||||NRF24L01|
 [Hisky](Protocols_Details.md#HISKY---4)|4|Hisky|HK310|||||||NRF24L01|
 [Hitec](Protocols_Details.md#HITEC---39)|39|OPT_FW|OPT_HUB|MINIMA||||||CC2500|
 [Hontai](Protocols_Details.md#HONTAI---26)|26|HONTAI|JJRCX1|X5C1|FQ777_951|||||NRF24L01|XN297
+[HoTT](Protocols_Details.md#HoTT---57)|57|||||||||CC2500|
 [Hubsan](Protocols_Details.md#HUBSAN---2)|2|H107|H301|H501||||||A7105|
 [J6Pro](Protocols_Details.md#J6Pro---22)|22|J6PRO||||||||CYRF6936|
 [KF606](Protocols_Details.md#KF606---49)|49|KF606*||||||||NRF24L01|XN297
@@ -105,24 +111,29 @@ CFlie|38|CFlie||||||||NRF24L01|
 [MT99xx](Protocols_Details.md#MT99XX---17)|17|MT|H7|YZ|LS|FY805||||NRF24L01|XN297
 [NCC1701](Protocols_Details.md#NCC1701---44)|44|NCC1701||||||||NRF24L01|
 [OpenLRS](Protocols_Details.md#OpenLRS---27)|27|||||||||None|
+[Pelikan](Protocols_Details.md#Pelikan---60)|60|||||||||A7105|
 [Potensic](Protocols_Details.md#Potensic---51)|51|A20||||||||NRF24L01|XN297
+[PROPEL](Protocols_Details.md#PROPEL---66)|66|74-Z||||||||NRF24L01|
 [Q2X2](Protocols_Details.md#Q2X2---29)|29|Q222|Q242|Q282||||||NRF24L01|
 [Q303](Protocols_Details.md#Q303---31)|31|Q303|CX35|CX10D|CX10WD|||||NRF24L01|XN297
 [Redpine](Protocols_Details.md#Redpine---50)|50|FAST|SLOW|||||||NRF24L01|
 [Scanner](Protocols_Details.md#Scanner---54)|54|||||||||CC2500|
-[SFHSS](Protocols_Details.md#SFHSS---21)|21|SFHSS||||||||CC2500|
-[Shenqi](Protocols_Details.md#Shenqi---19)|19|Shenqi||||||||NRF24L01|LT8900
+[SFHSS](Protocols_Details.md#SFHSS---21)|21|||||||||CC2500|
+[Shenqi](Protocols_Details.md#Shenqi---19)|19|||||||||NRF24L01|LT8900
+[Skyartec](Protocols_Details.md#Skyartec---68)|68|||||||||CC2500|CC2500
 [SLT](Protocols_Details.md#SLT---11)|11|SLT_V1|SLT_V2|Q100|Q200|MR100||||NRF24L01|
 [SymaX](Protocols_Details.md#Symax---10)|10|SYMAX|SYMAX5C|||||||NRF24L01|
+[Tiger](Protocols_Details.md#Tiger---61)|61|Tiger||||||||NRF24L01|XN297
 [Traxxas](Protocols_Details.md#Traxxas---43)|43|RX6519||||||||CYRF6936|
 [V2x2](Protocols_Details.md#V2X2---5)|5|V2x2|JXD506|||||||NRF24L01|
 [V761](Protocols_Details.md#V761---48)|48|V761||||||||NRF24L01|XN297
-[V911S](Protocols_Details.md#V911S---46)|46|V911S*||||||||NRF24L01|XN297
+[V911S](Protocols_Details.md#V911S---46)|46|V911S*|E119*|||||||NRF24L01|XN297
 [WFly](Protocols_Details.md#WFLY---40)|40|WFLY||||||||CYRF6936|
 [WK2x01](Protocols_Details.md#WK2X01---30)|30|WK2801|WK2401|W6_5_1|W6_6_1|W6_HEL|W6_HEL_I|||CYRF6936|
+[XK](Protocols_Details.md#XK---62)|62|XK|X450|X420||||||NRF24L01|XN297
 [YD717](Protocols_Details.md#YD717---8)|8|YD717|SKYWLKR|SYMAX4|XINXUN|NIHUI||||NRF24L01|
 [ZSX](Protocols_Details.md#ZSX---52)|52|280||||||||NRF24L01|XN297
-* "*" Sub Protocols designated by * suffix will use the NRF24L01 module by default to emulate the XN297L RF chip. If a CC2500 module is installed it will be used instead as it is proving to be a better option for the XN297L@250kbps. Each specific sub protocol has a more detailed explanation.
+* "*" Sub Protocols designated by * suffix are using a XN297L@250kbps which will be emulated by default with the NRF24L01. If option (freq tune) is diffrent from 0, the CC2500 module (if installed) will be used instead. Each specific sub protocol has a more detailed explanation.
 
 # A7105 RF Module
 
@@ -165,11 +176,11 @@ Extended limits and failsafe supported
 
 Telemetry enabled protocol:
  - by defaut using FrSky Hub protocol (for example er9x): RX(A1), battery voltage FS-CVT01(A2) and RX&TX RSSI
- - if using ersky9x and OpenTX: full telemetry information available
+ - if using erskyTX and OpenTX: full telemetry information available
 
 Option is used to change the servo refresh rate. A value of 0 gives 50Hz (min), 70 gives 400Hz (max). Specific refresh rate value can be calculated like this option=(refresh_rate-50)/5.
 
-**RX_Num is used to give a number a given RX. You must use a different RX_Num per RX. A maximum of 16 AFHDS2A RXs are supported.**
+**RX_Num is used to give a number a given RX. You must use a different RX_Num per RX. A maximum of 64 AFHDS2A RXs are supported.**
 
 OpenTX suggested RSSI alarm threshold settings (Telemetry tab): Low=15, Critical=12.
 
@@ -188,10 +199,19 @@ Note that the RX ouput will be AETR whatever the input channel order is.
 ### Sub_protocol PWM_SBUS - *2*
 ### Sub_protocol PPM_SBUS - *3*
 
+## FLYSKY AFHDS2A RX - *56*
+The Flysky AFHDS2A receiver protocol enables master/slave trainning, separate access from 2 different radios to the same model,...
+
+Available in OpenTX 2.3.3, Trainer Mode Master/Multi
+
+Extended limits supported
+
+Low power: enable/disable the LNA stage on the RF component to use depending on the distance with the TX.
+
 ## FLYZONE - *53*
 Models using the Flyzone FZ-410 TX: Fokker D.VII Micro EP RTF
 
-Models using the old ARES TX (prior to Hitec RED): Tiger Moth
+Models using the old ARES TX (prior to Hitec RED): Tiger Moth, eRC Micro Stik
 
 CH1|CH2|CH3|CH4
 ---|---|---|---
@@ -243,6 +263,19 @@ A|E|T|R|ARM|ANGLE|FLIP|PICTURE|VIDEO|LED
 
 ANGLE: angle is +100%, acro is -100%
 
+## Pelikan - *60*
+Models: TX: CADET PRO V4, RX: RX-602 V4
+
+Extended limits supported
+
+**Only 1 set of frequencies for now**
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
+---|---|---|---|---|---|---|---
+A|E|T|R|CH5|CH6|CH7|CH8
+
+Note that the RX ouput will be AETR.
+
 ***
 # CC2500 RF Module
 
@@ -295,7 +328,7 @@ Models: FrSky receivers D4R and D8R. DIY RX-F801 and RX-F802 receivers. Also kno
 
 Extended limits supported
 
-Telemetry enabled for A0, A1, RSSI, TSSI and Hub
+Telemetry enabled for A0, A1, RSSI, TX_RSSI, TX_LQI and Hub. Lowest the TX_LQI value is best the quality link is, it's a good indicator of how well the module is tuned.
 
 Option for this protocol corresponds to fine frequency tuning. This value is different for each Module and **must** be accurate otherwise the link will not be stable.
 Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it.
@@ -304,12 +337,42 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 ---|---|---|---|---|---|---|---
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 
+### Sub_protocol D8 - *0*
+Use the internal multi module Identifier.
+
+### Sub_protocol Cloned - *1*
+Use the identifier learnt from another FrSky radio when binding with the FrSkyRX/CloneTX mode.
+
+RX number can't be used anymore and is ignored.
+
+## FRSKYL - *67*
+Models: FrSky receivers L9R. Also known as LR12.
+
+Extended limits supported
+
+Option for this protocol corresponds to fine frequency tuning. This value is different for each Module and **must** be accurate otherwise the link will not be stable.
+Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it.
+
+### Sub_protocol LR12 - *0*
+Refresh rate: 36ms
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12
+---|---|---|---|---|---|---|---|---|----|----|----
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12
+
+### Sub_protocol LR12 6ch - *1*
+Refresh rate: 18ms
+
+CH1|CH2|CH3|CH4|CH5|CH6
+---|---|---|---|---|---
+CH1|CH2|CH3|CH4|CH5|CH6
+
 ## FRSKYX - *15*
-Models: FrSky receivers X4R, X6R and X8R. Also known as D16.
+Models: FrSky v1.xxx receivers X4R, X6R and X8R. Protocol also known as D16 v1 FCC/LBT.
 
 Extended limits and failsafe supported
 
-Telemetry enabled for A1 (RxBatt), A2, RSSI, TSSI and Hub
+Telemetry enabled for A1 (RxBatt), A2, RSSI, TX_RSSI, TX_LQI and Hub. Lowest the TX_LQI value is best the quality link is, it's a good indicator of how well the module is tuned.
 
 Option for this protocol corresponds to fine frequency tuning. This value is different for each Module and **must** be accurate otherwise the link will not be stable.
 Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it.
@@ -329,24 +392,38 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 
 ### Sub_protocol EU_16 - *2*
-EU-LBT protocol 16 channels @18ms. Note that the LBT part is not implemented, the TX transmits right away.
+EU-LBT protocol 16 channels @18ms.
 
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
 ---|---|---|---|---|---|---|---|---|----|----|----|----|----|----|----
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
 
 ### Sub_protocol EU_8 - *3*
-EU-LBT protocol 8 channels @9ms. Note that the LBT part is not implemented, the TX transmits right away.
+EU-LBT protocol 8 channels @9ms.
 
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 ---|---|---|---|---|---|---|---
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 
-## FRSKYX_RX - *55*
-The FrSkyX receiver protocol enables master/slave trainning, separate access from 2 different radios to the same model,...
+### Sub_protocol Cloned - *4*
+Use the identifier learnt from another FrSky radio when binding with the FrSkyRX/CloneTX mode.
+
+## FRSKYX2 - *64*
+Same as [FrskyX](Protocols_Details.md#FRSKYX---15) but for D16 v2.1.0 FCC/LBT.
+
+## FRSKY_RX - *55*
+
+### Sub_protocol RX - *0*
+The FrSky receiver protocol enables master/slave trainning, separate access from 2 different radios to the same model,...
+
+Auto detection of the protocol used by a TX transmitting FrSkyD/D8, FrSkyX/D16 v1.xxx FCC/LBT or FrSkyX/D16 v2.1.0 FCC/LBT at bind time.
+
+Available in OpenTX 2.3.3, Trainer Mode Master/Multi
 
 Extended limits supported
 
+For **FrSkyX, RX num must match on the master and slave**. This enables a multi student configuration for example.
+
 Option for this protocol corresponds to fine frequency tuning.
 If the value is equal to 0, the RX will auto tune otherwise it will use the indicated value.
 This value is different for each Module and **must** be accurate otherwise the link will not be stable.
@@ -354,19 +431,25 @@ Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it.
 
 Low power: enable/disable the LNA stage on the RF component to use depending on the distance with the TX.
 
-### Sub_protocol FCC - *0*
-FCC protocol 8 or 16 channels.
+### Sub_protocol CloneTX - *1*
+This subprotocol makes a clone of a TX identifier transmitting FrSkyD/D8, FrSkyX/D16 v1.xxx FCC/LBT and FrSkyX/D16 v2.1.0 FCC/LBT.
 
-CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
----|---|---|---|---|---|---|---|---|----|----|----|----|----|----|----
-CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+There are 3 slots available, 1 slot for D8 cloning, 1 slot for FrSkyX (D16v1) cloning and 1 slot for FrSkyX2 (D16v2.1.0) cloning.
+The same TX or different TXs can be used for each slot but a maximum of 1 per slot.
+If you launch the FrSky_RX/CloneTX protocol and do a bind with a TX transmitting with the D8 protocol, it will be saved in the slot D8. Same for D16v1 and D16v2.1 .
+Then the system will alow you to enable cloning as you wish for each model using the FrSkyD/X/X2 "Cloned" subprotocol. This way you can have models working with the original MPM indentifier and models which are shared by both the cloned TX and MPM.
 
-### Sub_protocol EU_LBT - *1*
-EU_LBT protocol 8 or 16 channels.
+Clone mode operation:
+- Select the FrSky_RX protocol, subprotocol CloneTX
+- Select on the TX to be cloned the protocol you want to clone the identifier from: FrSkyD/D8 or FrSkyX/D16 v1.xxx FCC/LBT or FrSkyX/D16 v2.1.0 FCC/LBT
+- Place both the TX and MPM in bind mode
+- Wait for the bind to complete
+- To use the cloned TX identifier, open a new model select the protocol you just cloned/binded and select the subprotocol "Cloned"
 
-CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
----|---|---|---|---|---|---|---|---|----|----|----|----|----|----|----
-CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+Notes:
+- OpenTX 2.3.8 N184 (nightly) or later is needed to have access to the "D8Cloned" and "D16Cloned" subprotocols, D16v2.1 "Cloned" is available under FrSkyX2/Cloned.
+- For FrSkyD, only the RX number used during bind is cloned -> you can't use RX num anymore
+- For FrSkyX and FrSkyX2, RX number has to be adjusted on each model to match the original TX model
 
 ## HITEC - *39*
 Models: OPTIMA, MINIMA and MICRO receivers.
@@ -383,20 +466,43 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9
 ### Sub_protocol OPT_FW - *0*
 OPTIMA RXs
 
-Full telemetry available on ersky9x and OpenTX. This is still a WIP.
+Full telemetry available on OpenTX 2.3.3+, still in progress for erskyTx. Lowest the TX_LQI value is best the quality link is, it's a good indicator of how well the module is tuned.
 
 **The TX must be close to the RX for the bind negotiation to complete successfully**
 
 ### Sub_protocol OPT_HUB - *1*
 OPTIMA RXs
 
-Basic telemetry using FrSky Hub on er9x, ersky9x, OpenTX and any radio with FrSky telemetry support with RX voltage, VOLT2 voltage, TX RSSI and TX LQI. 
+Basic telemetry using FrSky Hub on er9x, erskyTX, OpenTX and any radio with FrSky telemetry support with RX voltage, VOLT2 voltage, TX_RSSI and TX_LQI. Lowest the TX_LQI value is best the quality link is, it's a good indicator of how well the module is tuned.
 
 **The TX must be close to the RX for the bind negotiation to complete successfully**
 
 ### Sub_protocol MINIMA - *2*
 MINIMA, MICRO and RED receivers
 
+## HoTT - *57*
+Models: Graupner HoTT receivers (tested on GR-12L and GR-16L).
+
+Extended limits  and failsafe supported
+
+**RX_Num is used to give a number a given RX. You must use a different RX_Num per RX. A maximum of 64 HoTT RXs are supported.**
+
+**Failsafe MUST be configured once with the desired channel values (hold or position) while the RX is up (wait 10+sec for the RX to learn the config) and then failsafe MUST be set to RX/Receiver otherwise the servos will jitter!!!**
+
+The RX features configuration are done using the OpenTX script "Graupner HoTT.lua" .
+
+Option for this protocol corresponds to fine frequency tuning. This value is different for each Module and **must** be accurate otherwise the link will not be stable.
+Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it.
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12
+---|---|---|---|---|---|---|---|---|----|----|----
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12
+
+Basic telemetry is available on OpenTX 2.3.3+ with RX voltage, Rx temperature, RX RSSI, RX LQI, TX RSSI and TX LQI. Lowest the TX_LQI value is best the quality link is, it's a good indicator of how well the module is tuned.
+
+## Scanner - *54*
+2.4GHz scanner accessible using the OpenTX 2.3 Spectrum Analyser tool.
+
 ## SFHSS - *21*
 Models: Futaba RXs and XK models.
 
@@ -409,8 +515,14 @@ CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 ---|---|---|---|---|---|---|---
 A|E|T|R|CH5|CH6|CH7|CH8
 
-## Scanner - *54*
-2.4GHz scanner accessible using the OpenTX 2.3 Spectrum Analyser tool.
+## Skyartec - *68*
+
+Option for this protocol corresponds to fine frequency tuning. This value is different for each Module and **must** be accurate otherwise the link will not be stable.
+Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it.
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7
+---|---|---|---|---|---|---
+A|E|T|R|CH5|CH6|CH7
 
 ***
 # CYRF6936 RF Module
@@ -534,10 +646,10 @@ A|E|T|R|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|----|TH_KILL
 
 Notes:
  - model/type/number of channels indicated on the RX can be different from what the RX is in fact wanting to see. So don't hesitate to test different combinations until you have something working. Using Auto is the best way to find these settings.
- - RX output will match the Spektrum standard TAER independently of the input configuration AETR, RETA...
+ - RX output will match the Spektrum standard TAER independently of the input configuration AETR, RETA... unless on OpenTX 2.3.3+ you use the "Disable channel mapping" feature on the GUI.
  - RX output will match the Spektrum standard throw (1500µs +/- 400µs -> 1100..1900µs) for a 100% input. This is true for both Serial and PPM input. For PPM, make sure the end points PPM_MIN_100 and PPM_MAX_100 in _config.h are matching your TX ouput. The maximum ouput is 1000..2000µs based on an input of 125%.
-    - If you want to override the above and get maximum throw (old way) uncomment in _config.h the line #define DSM_MAX_THROW . In this mode to achieve standard throw use a channel weight of 84%.
- - TH_KILL is a feature which is enabled on channel 14 by default (can be disabled/changed) in the _config.h file. Some models (X-Vert, Blade 230S...) require a special position to instant stop the motor(s). If the channel 15 is above -50% the throttle is untouched but if it is between -50% and -100%, the throttle output will be forced between -100% and -150%. For example, a value of -80% applied on channel 14 will instantly kill the motors on the X-Vert.
+    - If you want to override the above and get maximum throw either uncomment in _config.h the line #define DSM_MAX_THROW or on OpenTX 2.3.3+ use the "Enable max throw" feature on the GUI (0=No,1=Yes). In this mode to achieve standard throw use a channel weight of 84%.
+ - TH_KILL is a feature which is enabled on channel 14 by default (can be disabled/changed) in the _config.h file. Some models (X-Vert, Blade 230S...) require a special position to instant stop the motor(s). If the channel 14 is above -50% the throttle is untouched but if it is between -50% and -100%, the throttle output will be forced between -100% and -150%. For example, a value of -80% applied on channel 14 will instantly kill the motors on the X-Vert.
 
 ### Sub_protocol DSM2_22 - *0*
 DSM2, Resolution 1024, refresh rate 22ms
@@ -550,9 +662,9 @@ DSMX, Resolution 2048, refresh rate 11ms
 ### Sub_protocol AUTO - *4*
 The "AUTO" feature enables the TX to automatically choose what are the best settings for your DSM RX and update your model protocol settings accordingly.
 
-The current radio firmware which are able to use the "AUTO" feature are ersky9x (9XR Pro, 9Xtreme, Taranis, ...), er9x for M128(9XR)&M2561 and OpenTX (mostly Taranis).
+The current radio firmware which are able to use the "AUTO" feature are erskyTX (9XR Pro, 9Xtreme, Taranis, ...), er9x for M128(9XR)&M2561 and OpenTX (mostly Taranis).
 For these firmwares, you must have a telemetry enabled TX and you have to make sure you set the Telemetry "Usr proto" to "DSMx".
-Also on er9x you will need to be sure to match the polarity of the telemetry serial (normal or inverted by bitbashing), while on ersky9x you can set "Invert COM1" accordinlgy.
+Also on er9x you will need to be sure to match the polarity of the telemetry serial (normal or inverted by bitbashing), while on erskyTX you can set "Invert COM1" accordinlgy.
 
 ## J6Pro - *22*
 
@@ -640,6 +752,17 @@ CH12|CH13
 ----|----
 TAKE_OFF|EMG_STOP
 
+## BAYANG RX - *59*
+The Bayang receiver protocol enables master/slave trainning, separate access from 2 different radios to the same model,...
+
+See the [BAYANG protocol](Protocols_Details.md#BAYANG---14) on how to activate ANAUX1 and ANAUX2 (Option/Telemetry=2).
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10
+---|---|---|---|---|---|---|---|---|---
+A|E|T|R|ANAUX1|ANAUX2|FLIP|RTH|PICTURE|VIDEO
+
+Available in OpenTX 2.3.3, Trainer Mode Master/Multi
+
 ## BUGSMINI - *42*
 Models: MJX Bugs 3 Mini and 3H
 
@@ -790,10 +913,22 @@ CH1|CH2|CH3|CH4|CH5|CH6
 ---|---|---|---|---|---
 A|E|T|R|GYRO|PITCH
 
+### Sub_protocol Std - *0*
+
+### Sub_protocol ET4 - *1*
+Models compatible with the ET4 transmitter like ESky Big Lama
+**Multiple IDs but only one frequency...**
+
 ## ESKY150 - *35*
 ESky protocol for small models since 2014 (150, 300, 150X, ...)
 
-Number of channels are set with option. option=0 4 channels and option=1 7 channels. An invalid option value will end up with 4 channels.
+### Sub_protocol 4CH - *0*
+
+CH1|CH2|CH3|CH4
+---|---|---|---
+A|E|T|R
+
+### Sub_protocol 7CH - *1*
 
 CH1|CH2|CH3|CH4|CH5|CH6|CH7
 ---|---|---|---|---|---|---
@@ -801,6 +936,15 @@ A|E|T|R|FMODE|AUX6|AUX7
 
 FMODE and AUX7 have 4 positions: -100%..-50%=>0, -50%..5%=>1, 5%..50%=>2, 50%..100%=>3
 
+## FX816 - *58*
+Model: FEI XIONG FX816 P38
+
+Only 8 TX IDs available
+
+CH1|CH2|CH3|CH4
+---|---|---|---
+A|-|T|-
+
 ## FY326 - *20*
 
 ### Sub_protocol FY326 - *0*
@@ -823,9 +967,9 @@ A|E|T|R|FLIP|RTH|HEADLESS|EXPERT
 ## GD00X - *47*
 Model: GD005 C-17 Transport, GD006 DA62 and ZC-Z50
 
-If the model does not respond well to inputs or hard to bind, you can try to set Power to Low. But this protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components used and nothing we can do about it in the firmware.
+This protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components.
 
-If a CC2500 rf component is available it will be used in place of the NRF24L01 which might fix the issue mentioned above. Option is used for fine frequency tuning like any CC2500 protocols. Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it if necessary.
+If the model does not respond well to inputs or hard to bind, you can try to switch the emulation from the default NRF24L01 RF component to the CC2500 by using an option value (freq tuning) different from 0. Option in this case is used for fine frequency tuning like any CC2500 protocols so check the [Frequency Tuning page](/docs/Frequency_Tuning.md).
 
 CH1|CH2|CH3|CH4|CH5|CH6|CH7
 ---|---|---|---|---|---|---
@@ -926,9 +1070,9 @@ ARM|
 ## KF606 - *49*
 Model: KF606
 
-If the model does not respond well to inputs or hard to bind, you can try to set Power to Low. But this protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components used and nothing we can do about it in the firmware.
+This protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components.
 
-If a CC2500 rf component is available it will be used in place of the NRF24L01 which might fix the issue mentioned above. Option is used for fine frequency tuning like any CC2500 protocols. Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it if necessary.
+If the model does not respond well to inputs or hard to bind, you can try to switch the emulation from the default NRF24L01 RF component to the CC2500 by using an option value (freq tuning) different from 0. Option in this case is used for fine frequency tuning like any CC2500 protocols so check the [Frequency Tuning page](/docs/Frequency_Tuning.md).
 
 CH1|CH2|CH3|CH4|CH5
 ---|---|---|---|---
@@ -953,9 +1097,9 @@ Only 3 TX IDs available, change RX_Num value 0..2 to cycle through them
 ### Sub_protocol E010 - *4*
 15 TX IDs available, change RX_Num value 0..14 to cycle through them
 
-If the model does not respond well to inputs or hard to bind, you can try to set Power to Low. But this protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components used and nothing we can do about it in the firmware.
+This protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components.
 
-If a CC2500 rf component is available it will be used in place of the NRF24L01 which might fix the issue mentioned above. Option is used for fine frequency tuning like any CC2500 protocols. Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it if necessary.
+If the model does not respond well to inputs or hard to bind, you can try to switch the emulation from the default NRF24L01 RF component to the CC2500 by using an option value (freq tuning) different from 0. Option in this case is used for fine frequency tuning like any CC2500 protocols so check the [Frequency Tuning page](/docs/Frequency_Tuning.md).
 
 ### Sub_protocol H26WH - *5*
 CH6|
@@ -985,7 +1129,9 @@ Model: Yi Zhan i6S
 
 Only one model can be flown at the same time since the ID is hardcoded.
 
-If the model does not respond well to inputs or hard to bind, you can try to set Power to Low. But this protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components used and nothing we can do about it in the firmware.
+This protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components.
+
+If the model does not respond well to inputs or hard to bind, you can try to switch the emulation from the default NRF24L01 RF component to the CC2500 by using an option value (freq tuning) different from 0. Option in this case is used for fine frequency tuning like any CC2500 protocols so check the [Frequency Tuning page](/docs/Frequency_Tuning.md).
 
 ### Sub_protocol LS - *3*
 Models: LS114, 124, 215
@@ -1017,7 +1163,7 @@ CH1|CH2|CH3|CH4|CH5
 A|E|T|R|Warp
 
 ## Potensic - *51*
-Models: Potensic A20
+Model: Potensic A20
 
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 ---|---|---|---|---|---|---|---
@@ -1031,6 +1177,17 @@ MODE: Beginner -100%, Medium 0%, Advanced +100%
 
 HEADLESS: Off -100%, On +100%
 
+## PROPEL - *66*
+Model: PROPEL 74-Z Speeder Bike
+
+Autobind protocol
+
+Telemetry: RSSI is equal to TX_LQI which indicates how well the TX receives the RX (0-100%). A1 voltage should indicate the numbers of life remaining (not tested). A2 is giving the model status using a bit mask: 0x80=flying, 0x08=taking off, 0x04=landing, 0x00=landed/crashed
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14
+---|---|---|---|---|---|---|---|---|----|----|----|----|----
+A|E|T|R|LEDs|RollCW|RollCCW|Fire|Weapons|Calib|Alt_Hold|Take_off|Land|Training
+
 ## Q2X2 - *29*
 ### Sub_protocol Q222 - *0*
 Models: Q222 v1 and V686 v2
@@ -1055,7 +1212,10 @@ CH1|CH2|CH3|CH4
 A|E|T|R
 
 ### Sub_protocol Q303 - *0*
-If the model does not respond well to inputs or hard to bind, you can try to set Power to Low. But this protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components used and nothing we can do about it in the firmware.
+
+This protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components.
+
+If the model does not respond well to inputs or hard to bind, you can try to switch the emulation from the default NRF24L01 RF component to the CC2500 by using an option value (freq tuning) different from 0. Option in this case is used for fine frequency tuning like any CC2500 protocols so check the [Frequency Tuning page](/docs/Frequency_Tuning.md).
 
 CH5|CH6|CH7|CH8|CH9|CH10|CH11
 ---|---|---|---|---|---|---
@@ -1094,7 +1254,7 @@ Model: Shenqiwei 1/20 Mini Motorcycle
 
 CH1|CH2|CH3|CH4
 ---|---|---|---
- | |T|R
+-|-|T|R
 
 Throttle +100%=full forward,0%=stop,-100%=full backward.
 
@@ -1204,6 +1364,15 @@ CH10|CH11|CH12
 ---|---|---
 Start/Stop|EMERGENCY|CAMERA_UP/DN
 
+## Tiger - *61*
+Autobind protocol
+
+**Only 1 ID**
+
+CH1|CH2|CH3|CH4|CH5|CH6
+---|---|---|---|---|---
+A|E|T|R|FLIP|LIGHT
+
 ## V761 - *48*
 Model: Volantex V761 and may be other
 
@@ -1216,16 +1385,38 @@ CH1|CH2|CH3|CH4|CH5
 Gyro: -100%=Beginer mode (Gyro on, yaw and pitch rate limited), 0%=Mid Mode ( Gyro on no rate limits), +100%=Mode Expert Gyro off
 
 ## V911S - *46*
-Models: WLtoys V911S, XK A110
+This protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components.
 
-If the model does not respond well to inputs or hard to bind, you can try to set Power to Low. But this protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components used and nothing we can do about it in the firmware.
-
-If a CC2500 rf component is available it will be used in place of the NRF24L01 which might fix the issue mentioned above. Option is used for fine frequency tuning like any CC2500 protocols. Check the [Frequency Tuning page](/docs/Frequency_Tuning.md) to determine it if necessary.
+If the model does not respond well to inputs or hard to bind, you can try to switch the emulation from the default NRF24L01 RF component to the CC2500 by using an option value (freq tuning) different from 0. Option in this case is used for fine frequency tuning like any CC2500 protocols so check the [Frequency Tuning page](/docs/Frequency_Tuning.md).
 
 CH1|CH2|CH3|CH4|CH5
 ---|---|---|---|---
 A|E|T|R|CALIB
 
+### Sub_protocol V911S - *0*
+Models: WLtoys V911S, XK A110
+
+### Sub_protocol E119 - *1*
+Models: Eachine E119
+
+## XK - *62*
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10
+---|---|---|---|---|---|---|---|---|----
+A|E|T|R|Flight_modes|Take_off|Emerg stop|3D/6G|Picture|Video
+
+Flight_modes: -100%=M-Mode, 0%=6G-Mode, +100%=V-Mode. CH6-CH10 are mementary switches.
+
+### Sub_protocol X450 - *0*
+Models: XK X450 (TX=X8)
+
+This protocol is known to be problematic because it's using the xn297L emulation with a transmission speed of 250kbps therefore it doesn't work very well with every modules, this is an hardware issue with the accuracy of the components.
+
+If the model does not respond well to inputs or hard to bind, you can try to switch the emulation from the default NRF24L01 RF component to the CC2500 by using an option value (freq tuning) different from 0. Option in this case is used for fine frequency tuning like any CC2500 protocols so check the [Frequency Tuning page](/docs/Frequency_Tuning.md).
+
+### Sub_protocol X420 - *1*
+Models: XK X420/X520 (TX=X4)
+
 ## YD717 - *8*
 Autobind protocol
 
@@ -1247,9 +1438,43 @@ Autobind protocol
 
 CH1|CH2|CH3|CH4|CH5
 ---|---|---|---|---
-||T|R|LIGHT
+-|-|T|R|LIGHT
+
+# SX1276 RF Module
+
+## FRSKYR9 - *65*
+Extended limits supported
+
+### Sub_protocol R9_915 - *0*
+915MHz, 16 channels
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+---|---|---|---|---|---|---|---|---|----|----|----|----|----|----|----
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+
+### Sub_protocol R9_868 - *1*
+868MHz, 16 channels
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+---|---|---|---|---|---|---|---|---|----|----|----|----|----|----|----
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9|CH10|CH11|CH12|CH13|CH14|CH15|CH16
+
+### Sub_protocol R9_915_8CH - *2*
+915MHz, 8 channels
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
+---|---|---|---|---|---|---|---
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
+
+### Sub_protocol R9_868_8CH - *3*
+868MHz, 8 channels
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
+---|---|---|---|---|---|---|---
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
 
 # OpenLRS module
 
 ## OpenLRS - *27*
 This is a reservation for OpenLRSng which is using Multi's serial protocol for their modules: https://openlrsng.org/. On the Multi side there is no protocol affected on 27 so it's just ignored.
+

README.md

@@ -19,9 +19,9 @@ If you like this project and want to support further development please consider
 
 ## Development status
 
-Current Multiprotocol code check status: [![Travis Build Status for Multi](https://api.travis-ci.org/pascallanger/DIY-Multiprotocol-TX-Module.svg)](https://travis-ci.org/pascallanger/DIY-Multiprotocol-TX-Module)
+Current Multiprotocol code check status: [![Travis Build Status for Multi](https://api.travis-ci.org/pascallanger/DIY-Multiprotocol-TX-Module.svg?branch=master)](https://travis-ci.org/pascallanger/DIY-Multiprotocol-TX-Module)
 
-Current Multiprotocol boards check status: [![Travis Build Status for Multi Boards](https://api.travis-ci.org/pascallanger/DIY-Multiprotocol-TX-Module-Boards.svg)](https://travis-ci.org/pascallanger/DIY-Multiprotocol-TX-Module-Boards)
+Current Multiprotocol boards check status: [![Travis Build Status for Multi Boards](https://api.travis-ci.org/pascallanger/DIY-Multiprotocol-TX-Module-Boards.svg?branch=master)](https://travis-ci.org/pascallanger/DIY-Multiprotocol-TX-Module-Boards)
 
 
 ## Quicklinks
@@ -40,6 +40,7 @@ Current Multiprotocol boards check status: [![Travis Build Status for Multi Boar
     * [STM32 Multiprotocol Module](docs/Compiling_STM32.md)
     * [OrangeRX Module](docs/Compiling_OrangeTx.md)
 1. [Transmitter Setup](docs/Transmitters.md) 
+    * [Channel Order](docs/Channel_Order.md)
 1. [How to for popular models](docs/Models.md)
 1. [Troubleshooting](docs/Troubleshooting.md)
 2. [Advanced Topics (not for the fainthearted!)](docs/Advanced_Topics.md)

docs/Channel_Order.md

@@ -0,0 +1,91 @@
+# Channel Order
+
+Channel ordering is extremely important to the Multiprotocol Module.  It is vital that the module receives channel data from the radio in the order which it expects so that it can reorder the data sent over the air into the order which the receiver requires/expects.
+
+## Background
+The Multiprotocol Module supports dozens of different protocols, many of which require channel data to be sent in a specific order (especially ones for models with integrated receiver/flight controllers).
+
+The Multiprotocol Module was designed to:
+* Enable users to control many different models or receivers using a single transmitter system
+* Work with radios where the input channels could not be reassigned
+* Make it simple to configure models without having to think about the channel order they require
+
+To address these considerations the Multiprotocol Module will internally reorder the radio's output channels to the order required by the selected protocol before transmitting the data to the receiver.
+
+The Multiprotocol Module also has functionality which depends on knowing which input channel is the throttle:
+* 'Bind on Channel' requires the throttle to be at -100% before the bind can be initiated (so that bind cannot be initiated while flying)
+* 'Throttle Kill' needs to know which channel to apply the throttle reduction to
+
+**So, the Multiprotocol Module must know what order the channel data from the radio is in.  However, because the radio does not tell the module which input is assigned to each channel, the order is fixed in the Multiprotocol Module's firmware.  This is the _expected channel order_.**
+
+## Expected Channel Order
+The expected channel order is the order in which the Multiprotocol Module expects to receive channel data from the radio.  It associates the four primary radio inputs (aileron, elevator,throttle, and rudder) to the four output channels CH1, CH2, CH3, and CH4.  In AETR, **A**ileron is on CH1, **E**levator is on CH2, **T**hrottle is on CH3, and **R**udder is on CH4.
+
+**The default expected channel order is AETR.**
+
+The Multiprotocol Module uses the expected channel order to reorder channels into the order required by the selected protocol, and to apply channel-specific features such as 'Throttle Kill'.
+
+If you are using firmware which has an expected channel order of AETR (the default), and you are using a protocol which has a fixed channel order†, you must create your radio models with a channel order of AETR, regardless of the channel order the receiver requires.  **The Multiprotocol Module will do the conversion from AETR to the required order for you.**
+
+For example, Spektrum / DSM receivers expect **TAER**.  When you configure the model in the radio you set it up in **AETR** order, the Multiprotocol Module reorders the channels before transmission, the receiver receives **TAER**, everything works as expected:
+
+Radio CH | Radio Input/Output | Module Reordering | Receiver Receives |
+| --- | --- | --- | --- | 
+| 1 | Ail | 3 -> 1 | Thr |
+| 2 | Ele | 1 -> 2 | Ail |
+| 3 | Thr | 2 -> 3 | Ele |
+| 4 | Rud | 4 -> 4 | Rud |
+
+If the radio channel order is not in the expected order (AETR) the channel reordering will be broken.
+
+For example, if the radio is configured with TAER, but the Multiprotocol module expects AETR, this will happen:
+
+Radio CH | Radio Input/Output | Module Reordering | Receiver Receives |
+| --- | --- | --- | --- | 
+| 1 | Thr | 3 -> 1 | Ele |
+| 2 | Ail | 1 -> 2 | Thr |
+| 3 | Ele | 2 -> 3 | Ail |
+| 4 | Rud | 4 -> 4 | Rud |
+
+With potentially dangerous or disasterous consequences.
+
+At best, you won't be able to arm your model because the throttle value is too high (because the receiver sees the elevator output, which is at 50%, where it expects throttle to be).  At worst the throttle will go to 50% as soon as the model binds with the radio.
+
+**†** Not all protocols have a fixed channel order, see [Protocols Without a Fixed Channel Order](#protocols-without-a-fixed-channel-order).
+
+## Setting the Expected Channel Order
+You can change the expected channel order by compiling or downloading firmware with a different channel order and flashing it to your Multiprotocol Module.
+
+1. If you compile your own firmware, modify the channel order line in the `_Config.h` file to match your preference
+2. If you flash the pre-compiled firmware from the Releases page, download the order-specific firmware image which matches your preference
+
+**After updating the Multiprotocol Module you must still ensure your radio setup matches the module's expected order.**
+
+## Changing the Channel Order on the radio
+**Your radio is not aware of the channel order expected by the Multiprotocol Module, and the module is not aware of the default channel order on your radio.**
+
+Once you have settled on a preferred channel order, and flashed your Multiprotocol Module with firmware which expects that order, you should:
+
+1. Change the Default Channel Order setting on your radio to match the Multiprotocol Module
+1. Ensure that any models which you control with the Multiprotocol Module are configured with the channel order which the Module expects
+
+**Changing the Default Channel Order only affects new models - you must manually edit existing models.**
+
+## Protocols Without a Fixed Channel Order
+The Multiprotocol Module also supports protocols which _do not_ have a specific channel order.  For these protocols the channel order _is not_ changed and will be transmitted as received from the radio.
+
+Examples of protocols which are not reordered: Corona, FrSkyD, FrSkyX, FrSkyV, Hitec, and WFly.
+
+The full list of supported protocols, including the output channel order for each of them, is available [here](../Protocols_Details.md).
+
+Where the channel table looks like this, with an input assigned to each channel, the output **is** being reordered:
+
+CH1|CH2|CH3|CH4
+---|---|---|---
+A|E|T|R
+
+Where the channel table looks like this, the output **is not** being reordered:
+
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8
+---|---|---|---|---|---|---|---
+CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8

docs/Compiling_STM32.md

@@ -37,20 +37,25 @@ You are still unsure if your module can be flashed without tools or opening it?
 
 Your multi module is not USB upgradable ready, here is what you need:
 
-| **3.3V USB-TTL Adapter** | **4-pin Serial Programming Header** |
-|:---:|:--:|
-| <img src="images/ch340g.jpg" width="200"/> | <img src="images/4-pin-header.jpg" width="150" height="150"/> 
-| [(example ebay link)](https://www.ebay.co.uk/itm/FTDI-USB-to-TTL-Serial-Converter-Adapter-FT232RL-Module-5V-and-3-3V-Arduino-ARM/231918152528) | [(example ebay link)](https://www.ebay.co.uk/itm/4x-826629-4-Pin-header-pin-strips-AMPMODU-MOD-II-male-PIN4-straight/192334571714) |
+| **3.3V USB-TTL Adapter** | **4-pin 2.54mm Serial Programming Header** | **4-pin 1mm Serial Programming header + cable** | **5-pin 1.25mm cable** |
+|:---:|:---:|:---:|:---:|
+| All modules | DIY, Banggood 4-in-1, iRangeX IRX4/IRX4+/IRX4Lite, Jumper 4in1 1st gen | Vantac lite, URUAV lite | Jumper T16 internal module |
+| <img src="images/ch340g.jpg" width="200"/> | <img src="images/4-pin-header.jpg" width="150" height="150"/> | <img src="images/4-pin-1mm.jpg" width="150" height="150"/> | <img src="images/5-pin-125mm.jpg" width="150" height="150"/> |
+| [(example ebay link)](https://www.ebay.co.uk/itm/FTDI-USB-to-TTL-Serial-Converter-Adapter-FT232RL-Module-5V-and-3-3V-Arduino-ARM/231918152528) | [(example ebay link)](https://www.ebay.co.uk/itm/4x-826629-4-Pin-header-pin-strips-AMPMODU-MOD-II-male-PIN4-straight/192334571714) | [(example ebay link)](https://www.ebay.com/itm/5-PCS-Mini-Micro-ZH-1mm-2-6-Pin-JST-Connector-with-Wire-HI/183963001322) | [(example ebay link)](https://www.ebay.co.uk/itm/5-PAIRS-5-PIN-Micro-JST-GH-1-25-Connector-Plug-Socket-1-25mm-150mm-Cable/273110735668)
 
 The USB-TTL adapter can be either FTDI or CH340G, as long as it works.  It should have a switch or jumper to select 3.3V or 5V, which **must** be set to **3.3V**.
 
-The 4-pin header needs to be soldered onto the board as indicated by the red rectangle:
+The header needs to be soldered onto the board as indicated by the red rectangle:
 
-| **DIY Multiprotocol** | **Banggood 4-in-1** | **iRangeX IRX4 Plus** | **Jumper** | **MPM Lite** |
-|:---:|:---:|:---:|:---:|:---:|
-| <img src="images/Board_PCB_STM32_with_serial.jpg" width="142" height="200"/> | <img src="images/bg-multi-stm32-serial.jpg" width="195" height="200"/> | <img src="images/irx4plus-serial.jpg" width="164" height="200"/> | <img src="images/Jumper-serial.jpg" width="164" height="200"/> | <img src="images/mpmlite-serial.jpg" width="200" height="189" />
+| **DIY Multiprotocol** | **Banggood 4-in-1** | **iRangeX IRX4 / IR4+** | **Jumper 4in1 1st gen** |
+|:---:|:---:|:---:|:---:|
+| <img src="images/Board_PCB_STM32_with_serial.jpg" width="142" height="200"/> | <img src="images/bg-multi-stm32-serial.jpg" width="195" height="200"/> | <img src="images/irx4plus-serial.jpg" width="164" height="200"/> | <img src="images/Jumper-serial.jpg" width="164" height="200"/> 
 
-**Note:** The Banggood STM32 module most likely already has the header pin in place.
+| **Vantac/URUAV Lite** | **iRangeX IRX4 Lite** | **Jumper T16 internal module** |
+|:---:|:---:|:---:|
+| <img src="images/mpmlite-serial.jpg" width="200" height="189" /> | <img src="images/irx4-lite.jpg" width="160" height="200" /> | <img src="images/T16-internal-connector.png" width="160" height="200" /> |
+
+**Note:** The Banggood STM32 and T16 internal modules most likely already has the header pin in place.
 
 ## Option 1 - Update Firmware using Precompiled Binaries
 If you don't need/want to customize the multi module firmware then you can use pre-compiled binaries available [here](https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/releases).
@@ -135,21 +140,30 @@ The wiring for the USB-to-TTL adapter is:
 
 **It is critical to ensure that the USB-to-TTL adapter is set to 3.3V**.
 
-| **DIY Multiprotocol** | **Banggood 4-in-1** | **iRangeX IRX4** | **Jumper 4-in-1** |
-|:---:|:---:|:---:|:---:|
-| <img src="images/diy-ch340g.jpg" height="200"/> | <img src="images/bg-stm32-ch340g.jpg" height="200"/> | <img src="images/irx4-ch340g.jpg" height="200"/> | <img src="images/Jumper-ch340g.jpg" height="200"/> |
+| **DIY Multiprotocol** | **Banggood 4-in-1** | **iRangeX IRX4** |
+|:---:|:---:|:---:|
+| <img src="images/diy-ch340g.jpg" height="200"/> | <img src="images/bg-stm32-ch340g.jpg" height="200"/> | <img src="images/irx4-ch340g.jpg" height="200"/> |
+
+| **Jumper 4-in-1 1st gen** | **Jumper T16 internal module** |
+|:---:|:---:|
+| <img src="images/Jumper-ch340g.jpg" height="200"/> | <img src="images/T16-internal-connection.png" height="200"/> |
 
 1. Put the module in the transmitter
 1. Connect the USB-to-TTL adapter to the module as described above
 1. Plug the USB-to-TTL adapter into the PC
 1. In the Arduino IDE click **Tools -> Port** and choose the COM port which matches the USB-to-TTL adapter
 
-In order to flash the bootloader the **BOOT0** jumper must be installed connecting **BOOT0** to 3.3V.  The location of **BOOT0** varies by hardware module. The latest Jumper modules with an intergrated FTDI do not need the BOOT0 jumper.
+In order to flash the bootloader the **BOOT0** jumper must be installed connecting **BOOT0** to 3.3V.  The location of **BOOT0** varies by hardware module.
 
-| **DIY Multiprotocol** | **Banggood 4-in-1** | **iRangeX IRX4** | **iRangeX IRX4 Plus** | **Jumper 4-in-1** | **Vantac MPM Lite** |
-|:---:|:---:|:---:|:---:|:---:|:---:|
-| Bridge pins 1 and 2 as shown by the yellow jumper wire. | Bridge the left-most pins of the 6-pin header as shown by the yellow jumper. | Bridge pins 1 and 2 as shown by the blue jumper. | Bridge the BOOT0 pin to the adjacent 3.3V pin as shown by the yellow jumper. If it doesn't work move the jumper to bridge the two left hand pins (BOOT0 and directly above). | Bridge pins 1 and 2 as shown by the red jumper wire. | Brdige the two pins next to the usb port labelled with Boot0 |
-| <img src="images/diy-ch340g.jpg" height="200"/> | <img src="images/bg-stm32-boot0.jpg" height="200"/>  | <img src="images/irx4-boot0.jpg" height="200"/>  | <img src="images/irx4plus-boot0.jpg" height="200"/> | <img src="images/Jumper-ch340g.jpg" height="200"/> | <img src="images/mpmlite-boot0.jpg" width="200" /> |
+| **DIY Multiprotocol** | **Banggood 4-in-1** | **iRangeX IRX4** | **iRangeX IRX4 Plus** | **Jumper 4-in-1 1st gen** |
+|:---:|:---:|:---:|:---:|:---:|
+| Bridge pins 1 and 2 as shown by the yellow jumper wire. | Bridge the left-most pins of the 6-pin header as shown by the yellow jumper. | Bridge pins 1 and 2 as shown by the blue jumper. | Bridge the BOOT0 pin to the adjacent 3.3V pin as shown by the yellow jumper. If it doesn't work move the jumper to bridge the two left hand pins (BOOT0 and directly above). | Bridge pins 1 and 2 as shown by the red jumper wire. |
+| <img src="images/diy-ch340g.jpg" height="200"/> | <img src="images/bg-stm32-boot0.jpg" height="200"/>  | <img src="images/irx4-boot0.jpg" height="200"/>  | <img src="images/irx4plus-boot0.jpg" height="200"/> | <img src="images/Jumper-ch340g.jpg" height="200"/> |
+
+| **Vantac/URUAV Lite** | **iRangeX IRX4 Lite** | **Jumper T16 internal module** |
+|:---:|:---:|:---:|
+| Brdige the two pins next to the usb port labelled with Boot0 | Brdige the two indicated pins| Bridge BOOT0 and +3.3V in RED on the cabling |
+| <img src="images/mpmlite-boot0.jpg" width="200" /> | <img src="images/irx4-lite-boot0.jpg" height="200"/> | <img src="images/T16-internal-connection.png" height="200"/> |
 
 1. If on Linux, ensure you have permissions to access serial interfaces as described [here](https://github.com/benlye/DIY-Multiprotocol-TX-Module/blob/doc-updates/docs/Arduino_IDE_Boards.md#linux)
 1. Install the **BOOT0** jumper as described above.

docs/Frequency_Tuning.md

@@ -8,16 +8,17 @@ The protocols which require frequency tuning are:
 * **S-FHSS** (e.g. Futaba S-FHSS receivers)
 * **Corona** (e.g. Corona V1 FSS, Corona V2 DSSS CR8D/CR6D/CR4D and FlyDream IS-4R/IS-4R0 receivers)
 * **Hitec** (e.g. Optima, Minima, Micro and RED receivers)
+* **HoTT** (e.g. Graupner receivers)
 
 There is a [video](#video) at the end of this page which gives an example of the tuning process.
 
 ## More information
-Original FrSky, Futaba, Corona and Hitec receivers have been frequency-tuned by the manufacturer at the factory.  Because of variations in the oscillator crystals used in multiprotocol modules it is necessary to fine-tune the module to match the manufacturer frequencies.  
+Original FrSky, Futaba, Corona Hitec and HoTT receivers have been frequency-tuned by the manufacturer at the factory.  Because of variations in the oscillator crystals used in multiprotocol modules it is necessary to fine-tune the module to match the manufacturer frequencies.  
 
 'Compatible' receivers suffer the same variation in crystal oscillators as multiprotocol modules, but have to be compatible with genuine (manufacturer-tuned) transmitters so they will typically have auto-tuning built in, and will self-tune to the radio's frequency when they are bound.
 
 ## Fine-tuning procedure
-**Note:** For best results, the fine-tuning procedure should be carried out with a genuine FrSky/Futaba/Corona/Hitec receiver.
+**Note:** For best results, the fine-tuning procedure should be carried out with a genuine FrSky/Futaba/Corona/Hitec/HoTT receiver.
 
 The procedure can be performed in serial or PPM mode, but is easier with in serial mode where the effect of the change can be seen in real-time.
 
@@ -49,7 +50,7 @@ Connection is lost at -73 and +35; the median is -19:
 ### Finally
 Once the **Freq** value is known it should be applied to all other models which use this protocol and, if they were previously bound, the receivers must be re-bound.
 
-For convenience this can be done in the `_Config.h` (or `_MyConfig.h`) configuration file.
+For convenience this can be applied once for all per protocol using the FORCE commands described below in `_Config.h` (or `_MyConfig.h`) configuration file.
 
 #### Forced tuning values
 Once known-good tuning values have been determined, they can be stored in the configuration file to be automatically applied to all models which use the given protocol.
@@ -73,6 +74,7 @@ These settings can also be used to force different tuning values for different m
 //#define FORCE_SFHSS_TUNING  0
 //#define FORCE_CORONA_TUNING  0
 //#define FORCE_HITEC_TUNING  0
+//#define FORCE_HOTT_TUNING  0
 ```
 
 ## Video