Failsafe modification

The following protocols are supporting failsafe: FrSkyX, Devo, WK2x01, SFHSS, HISKY/HK310 and AFHDS2A In Serial mode failsafe is configured on the radio itself. In PPM mode and only after the module is up and fully operational, press the bind button for at least 5sec to send the current stick positions as failsafe to the RX.
AVR modules: Fix KF606, GD00X and Potensic
2025-11-25 21:39:39 +00:00 · 2019-09-27 16:20:43 +02:00 · 2019-09-26 15:51:28 +02:00 · 2019-09-26 15:50:38 +02:00 · 2019-09-25 19:10:55 +02:00 · 2019-09-23 18:13:25 +02:00
29 changed files with 1397 additions and 506 deletions
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,14 +5,15 @@ language: c
  #
 env:
  global:
-    - IDE_VERSION=1.8.1
+    - IDE_VERSION=1.8.9
  matrix:
-    - BOARD="multi4in1:STM32F1:multistm32f103c:upload_method=serialMethod"
-    - BOARD="multi4in1:STM32F1:multistm32f103c:upload_method=TxFlashMethod"
-    - BOARD="multi4in1:avr:multixmega32d4"
    - BOARD="multi4in1:avr:multiatmega328p:bootloader=none"
    - BOARD="multi4in1:avr:multiatmega328p:bootloader=optiboot"
-  #
+    - BOARD="multi4in1:avr:multixmega32d4"
+    - BOARD="multi4in1:STM32F1:multistm32f103c:debug_option=none"
+    - BOARD="multi4in1:STM32F1:multistm32f103c:debug_option=native"
+    - BOARD="multi4in1:STM32F1:multistm32f103c:debug_option=ftdi"
+    #
 notifications:
  email: false
  #
@@ -41,9 +42,17 @@ before_install:
      arduino --install-boards multi4in1:avr;
    fi
  #
-  - buildMulti() { BUILDCMD="arduino --verify --board $BOARD Multiprotocol/Multiprotocol.ino --pref build.path=./build/"; echo $BUILDCMD; $BUILDCMD; echo; }
-  - buildProtocol() { opt_disable $ALL_PROTOCOLS; opt_enable $1; buildMulti; }
-  - buildEachProtocol() { exitcode=0; for PROTOCOL in $ALL_PROTOCOLS ; do echo Building $PROTOCOL; buildProtocol $PROTOCOL; if [ $? -ne 0 ]; then exitcode=1; fi; done; return $exitcode; }
+  - buildMulti() { 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 echo Building $PROTOCOL; 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
+  - sudo iptables -P OUTPUT ACCEPT
+  - 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
 before_script:
@@ -66,9 +75,9 @@ before_script:
    fi
  - echo $ALL_PROTOCOLS
  #
-  # Enable CHECK_FOR_BOOTLOADER when needed
-  - if [[ "$BOARD" =~ ":upload_method=TxFlashMethod" ]] || [[ "$BOARD" =~ ":bootloader=optiboot" ]]; then
-      opt_enable CHECK_FOR_BOOTLOADER;
+  # Disable CHECK_FOR_BOOTLOADER when not needed
+  - if [[ "$BOARD" == "multi4in1:avr:multiatmega328p:bootloader=none" ]]; then
+      opt_disable CHECK_FOR_BOOTLOADER;
    fi
  #
  # Trim the build down for the Atmega328p board
@@ -103,68 +112,92 @@ before_deploy:
  # Restore the default configuration
  - cp ./_Config.h.bak Multiprotocol/_Config.h
  # Build the release files for OrangeRX
-  - if [[ "$BOARD" =~ "multi4in1:avr:multixmega32d4" ]]; then
+  - if [[ "$BOARD" == "multi4in1:avr:multixmega32d4" ]]; then
      opt_enable $ALL_PROTOCOLS;
      opt_disable ORANGE_TX_BLUE;
      buildMulti;
-      mv build/Multiprotocol.ino.hex ./binaries/Multi-OrangeRX_Green_INV-$TRAVIS_TAG.hex;
+      mv build/Multiprotocol.ino.hex ./binaries/multi-orangerx-green-inv-$TRAVIS_TAG.hex;
      opt_enable ORANGE_TX_BLUE;
      buildMulti;
-      mv build/Multiprotocol.ino.hex ./binaries/Multi-OrangeRX_Blue_INV-$TRAVIS_TAG.hex;
+      mv build/Multiprotocol.ino.hex ./binaries/multi-orangerx-blue-inv-$TRAVIS_TAG.hex;
    fi
  # Build the release files for AVR without bootloader
-  - if [[ "$BOARD" =~ "multi4in1:avr:multiatmega328p:bootloader=none" ]]; then
+  - if [[ "$BOARD" == "multi4in1:avr:multiatmega328p:bootloader=none" ]]; then
      opt_disable CHECK_FOR_BOOTLOADER;
      opt_disable $ALL_PROTOCOLS;
      opt_enable $A7105_PROTOCOLS;
      buildMulti;
-      mv build/Multiprotocol.ino.hex ./binaries/Multi-AVR_USBASP_A7105_INV-$TRAVIS_TAG.hex;
+      mv build/Multiprotocol.ino.hex ./binaries/multi-avr-usbasp-A7105-inv-$TRAVIS_TAG.hex;
      opt_disable $ALL_PROTOCOLS;
      opt_enable $CC2500_PROTOCOLS;
      buildMulti;
-      mv build/Multiprotocol.ino.hex ./binaries/Multi-AVR_USBASP_CC2500_INV-$TRAVIS_TAG.hex;
+      mv build/Multiprotocol.ino.hex ./binaries/multi-avr-usbasp-CC2500-inv-$TRAVIS_TAG.hex;
      opt_disable $ALL_PROTOCOLS;
      opt_enable $CYRF6936_PROTOCOLS;
      buildMulti;
-      mv build/Multiprotocol.ino.hex ./binaries/Multi-AVR_USBASP_CYRF6936_INV-$TRAVIS_TAG.hex;
+      mv build/Multiprotocol.ino.hex ./binaries/multi-avr-usbasp-CYRF6936-inv-$TRAVIS_TAG.hex;
    fi
  # Build the release files for AVR with bootloader
-  - if [[ "$BOARD" =~ "multi4in1:avr:multiatmega328p:bootloader=optiboot" ]]; then
+  - if [[ "$BOARD" == "multi4in1:avr:multiatmega328p:bootloader=optiboot" ]]; then
      opt_enable CHECK_FOR_BOOTLOADER;
      opt_disable $ALL_PROTOCOLS;
      opt_enable $A7105_PROTOCOLS;
      buildMulti;
-      mv build/Multiprotocol.ino.hex ./binaries/Multi-AVR_TXFLASH_A7105_INV-$TRAVIS_TAG.hex;
+      mv build/Multiprotocol.ino.hex ./binaries/multi-avr-txflash-A7105-inv-$TRAVIS_TAG.hex;
      opt_disable $ALL_PROTOCOLS;
      opt_enable $CC2500_PROTOCOLS;
      buildMulti;
-      mv build/Multiprotocol.ino.hex ./binaries/Multi-AVR_TXFLASH_CC2500_INV-$TRAVIS_TAG.hex;
+      mv build/Multiprotocol.ino.hex ./binaries/multi-avr-txflash-CC2500-inv-$TRAVIS_TAG.hex;
      opt_disable $ALL_PROTOCOLS;
      opt_enable $CYRF6936_PROTOCOLS;
      buildMulti;
-      mv build/Multiprotocol.ino.hex ./binaries/Multi-AVR_TXFLASH_CYRF6936_INV-$TRAVIS_TAG.hex;
+      mv build/Multiprotocol.ino.hex ./binaries/multi-avr-txflash-CYRF6936-inv-$TRAVIS_TAG.hex;
    fi
-  # Build the release files for STM32 without bootloader
-  - if [[ "$BOARD" =~ "multi4in1:STM32F1:multistm32f103c:upload_method=serialMethod" ]]; then
-      opt_disable CHECK_FOR_BOOTLOADER;
-      opt_enable $ALL_PROTOCOLS;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/Multi-STM_FTDI_INV-$TRAVIS_TAG.bin;
-      opt_disable MULTI_STATUS;
-      opt_enable MULTI_TELEMETRY;
-      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/Multi-STM_FTDI_INV_OPENTX-$TRAVIS_TAG.bin;
-    fi
-  # Build the release files for STM32 with bootloader
-  - if [[ "$BOARD" =~ "multi4in1:STM32F1:multistm32f103c:upload_method=TxFlashMethod" ]]; then
+  # Build the release files for STM32 without debug
+  - if [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=none" ]]; then
      opt_enable CHECK_FOR_BOOTLOADER;
      opt_enable $ALL_PROTOCOLS;
+      opt_enable MULTI_STATUS;
+      opt_disable MULTI_TELEMETRY;
      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/Multi-STM_TXFLASH_INV-$TRAVIS_TAG.bin;
+      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-inv-$TRAVIS_TAG.bin;
+      opt_disable INVERT_TELEMETRY;
+      buildMulti;
+      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-noinv-$TRAVIS_TAG.bin;
+      opt_disable MULTI_STATUS;
+      opt_enable MULTI_TELEMETRY;
+      opt_enable INVERT_TELEMETRY;
+      buildMulti;
+      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-inv-$TRAVIS_TAG.bin;
+      opt_disable INVERT_TELEMETRY;
+      buildMulti;
+      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-noinv-$TRAVIS_TAG.bin;
+    fi
+  # Build the release files for STM32 with Native USB debugging
+  - if [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=native" ]]; then
+      opt_enable CHECK_FOR_BOOTLOADER;
+      opt_enable $ALL_PROTOCOLS;
+      opt_enable MULTI_STATUS;
+      opt_disable MULTI_TELEMETRY;
+      buildMulti;
+      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-inv-usbdebug-$TRAVIS_TAG.bin;
      opt_disable MULTI_STATUS;
      opt_enable MULTI_TELEMETRY;
      buildMulti;
-      mv build/Multiprotocol.ino.bin ./binaries/Multi-STM_TXFLASH_INV_OPENTX-$TRAVIS_TAG.bin;
+      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-inv-usbdebug-$TRAVIS_TAG.bin;
+    fi
+  # Build the release files for STM32 with FTDI USB debugging
+  - if [[ "$BOARD" == "multi4in1:STM32F1:multistm32f103c:debug_option=ftdi" ]]; then
+      opt_enable CHECK_FOR_BOOTLOADER;
+      opt_enable $ALL_PROTOCOLS;
+      opt_enable MULTI_STATUS;
+      opt_disable MULTI_TELEMETRY;
+      buildMulti;
+      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-erskytx-inv-ftdidebug-$TRAVIS_TAG.bin;
+      opt_disable MULTI_STATUS;
+      opt_enable MULTI_TELEMETRY;
+      buildMulti;
+      mv build/Multiprotocol.ino.bin ./binaries/multi-stm-opentx-inv-ftdidebug-$TRAVIS_TAG.bin;
    fi
 deploy:
  provider: releases
--- a/BootLoaders/package_multi_4in1_board_index.json
+++ b/BootLoaders/package_multi_4in1_board_index.json
@@ -116,6 +116,42 @@
        ],
        "toolsDependencies": []
      },
+      {
+        "name": "Multi 4-in-1 AVR Boards",
+        "architecture": "avr",
+        "version": "1.0.8",
+        "category": "Contributed",
+        "help": {
+          "online": "https://github.com/pascallanger/DIY-Multiprotocol-TX-Module"
+        },
+        "url": "https://github.com/pascallanger/DIY-Multiprotocol-TX-Module-Boards/raw/master/archives/package_multi_4in1_avr_board_v1.0.8.tar.gz",
+        "archiveFileName": "package_multi_4in1_avr_board_v1.0.8.tar.gz",
+        "checksum": "SHA-256:8e58b8733220d56155e10bf5bec0bfe6bf96f8460b3fd49a4b45c7f9fad776cb",
+        "size": "293388",
+        "boards": [
+          {"name": "Multi 4-in-1 (Atmega328p, 3.3V, 16MHz)"},
+          {"name": "Multi 4-in-1 (OrangeRX)"}
+        ],
+        "toolsDependencies": []
+      },
+      {
+        "name": "Multi 4-in-1 AVR Boards",
+        "architecture": "avr",
+        "version": "1.0.9",
+        "category": "Contributed",
+        "help": {
+          "online": "https://github.com/pascallanger/DIY-Multiprotocol-TX-Module"
+        },
+        "url": "https://github.com/pascallanger/DIY-Multiprotocol-TX-Module-Boards/raw/master/archives/package_multi_4in1_avr_board_v1.0.9.tar.gz",
+        "archiveFileName": "package_multi_4in1_avr_board_v1.0.9.tar.gz",
+        "checksum": "SHA-256:269c4ddcb8018be2b31f5c9e9f0814d120af492e894b8d5098a814486d56faa5",
+        "size": "318437",
+        "boards": [
+          {"name": "Multi 4-in-1 (Atmega328p, 3.3V, 16MHz)"},
+          {"name": "Multi 4-in-1 (OrangeRX)"}
+        ],
+        "toolsDependencies": []
+      },
      {
        "name": "Multi 4-in-1 STM32 Board",
        "architecture": "STM32F1",
@@ -410,6 +446,48 @@
          "version": "4.8.3-2014q1"
        }]
      },
+      {
+        "name": "Multi 4-in-1 STM32 Board",
+        "architecture": "STM32F1",
+        "version": "1.1.5",
+        "category": "Contributed",
+        "help": {
+          "online": "https://github.com/pascallanger/DIY-Multiprotocol-TX-Module"
+        },
+        "url": "https://github.com/pascallanger/DIY-Multiprotocol-TX-Module-Boards/raw/master/archives/package_multi_4in1_stm32_board_v1.1.5.tar.gz",
+        "archiveFileName": "package_multi_4in1_stm32_board_v1.1.5.tar.gz",
+        "checksum": "SHA-256:2d45c95f59b4fb9fc7f7bf8caca2dd8c13b4258141c20db6169e0c7faf72e5e4",
+        "size": "7930904",
+        "boards": [{
+          "name": "Multi 4-in-1 (STM32F103C)"
+        }],
+        "toolsDependencies": [{
+          "packager": "arduino",
+          "name": "arm-none-eabi-gcc",
+          "version": "4.8.3-2014q1"
+        }]
+      },
+      {
+        "name": "Multi 4-in-1 STM32 Board",
+        "architecture": "STM32F1",
+        "version": "1.1.6",
+        "category": "Contributed",
+        "help": {
+          "online": "https://github.com/pascallanger/DIY-Multiprotocol-TX-Module"
+        },
+        "url": "https://github.com/pascallanger/DIY-Multiprotocol-TX-Module-Boards/raw/master/archives/package_multi_4in1_stm32_board_v1.1.6.tar.gz",
+        "archiveFileName": "package_multi_4in1_stm32_board_v1.1.6.tar.gz",
+        "checksum": "SHA-256:d2d1ef721bbcdc3c680c6f98b4b8ab394478ac0f82d67af2f6c389a4a30789f4",
+        "size": "7962942",
+        "boards": [{
+          "name": "Multi 4-in-1 (STM32F103C)"
+        }],
+        "toolsDependencies": [{
+          "packager": "arduino",
+          "name": "arm-none-eabi-gcc",
+          "version": "4.8.3-2014q1"
+        }]
+      },
      {
        "name": "Multi 4-in-1 OrangeRX Board - DEPRECATED, USE MULTI 4-IN-1 AVR BOARDS PACKAGE INSTEAD",
        "architecture": "orangerx",
--- a/Multiprotocol/AFHDS2A_a7105.ino
+++ b/Multiprotocol/AFHDS2A_a7105.ino
@@ -78,23 +78,26 @@ enum{

 static void AFHDS2A_update_telemetry()
 {
+	if(packet[0]==0xAA && packet[9]==0xFD)
+		return;	// ignore packets which contain the RX configuration: FD FF 32 00 01 00 FF FF FF 05 DC 05 DE FA FF FF FF FF FF FF FF FF FF FF FF FF FF FF
 	// Read TX RSSI
 	int16_t temp=256-(A7105_ReadReg(A7105_1D_RSSI_THOLD)*8)/5;		// value from A7105 is between 8 for maximum signal strength to 160 or less
 	if(temp<0) temp=0;
 	else if(temp>255) temp=255;
 	TX_RSSI=temp;
 	// AA | TXID | rx_id | sensor id | sensor # | value 16 bit big endian | sensor id ......
-	// max 7 sensors per packet
+	// AC | TXID | rx_id | sensor id | sensor # | length | bytes | sensor id ......
 	#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;
-			debug("T=");
-			for(int i=9;i < AFHDS2A_RXPACKET_SIZE; i++)
+			debug("T(%02X)=",packet[0]);
+			for(uint8_t i=9;i < AFHDS2A_RXPACKET_SIZE; i++)
 			{
 				pkt[i-8]=packet[i];
 				debug(" %02X",packet[i]);
 			}
+			pkt[29]=packet[0];	// 0xAA Normal telemetry, 0xAC Extended telemetry
 			telemetry_link=2;
 			debugln("");
 			return;
--- a/Multiprotocol/Common.ino
+++ b/Multiprotocol/Common.ino
@@ -13,28 +13,6 @@
 along with Multiprotocol.  If not, see <http://www.gnu.org/licenses/>.
 */

-#ifdef FAILSAFE_ENABLE
-//Convert from percentage to failsafe value
-#define FAILSAFE_THROTTLE_LOW_VAL (((FAILSAFE_THROTTLE_LOW+125)*1024)/125)
-#if FAILSAFE_THROTTLE_LOW_VAL <= 0
-	#undef FAILSAFE_THROTTLE_LOW_VAL
-	#define FAILSAFE_THROTTLE_LOW_VAL 1
-#elif (FAILSAFE_THROTTLE_LOW_VAL) >= 2046
-	#undef FAILSAFE_THROTTLE_LOW_VAL
-	#define FAILSAFE_THROTTLE_LOW_VAL 2046
-#endif
-void InitFailsafe()
-{
-	for(uint8_t i=0;i<NUM_CHN;i++)
-		Failsafe_data[i]=1024;
-	Failsafe_data[THROTTLE]=(uint16_t)FAILSAFE_THROTTLE_LOW_VAL;	//1=-125%, 204=-100%
-	FAILSAFE_VALUES_on;
-	#ifdef FAILSAFE_SERIAL_ONLY
-		if(mode_select == MODE_SERIAL)
-			FAILSAFE_VALUES_off;
-	#endif
-}
-#endif
 #ifdef ENABLE_PPM
 void InitPPM()
 {
@@ -61,13 +39,30 @@ uint8_t convert_channel_8b_limit_deadband(uint8_t num,uint8_t min,uint8_t mid, u
 {
 	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=min+(val-CHANNEL_MIN_100)*(mid-min)/(db_low-CHANNEL_MIN_100);
+	{
+		val-=CHANNEL_MIN_100;
+		calc=mid-min;
+		calc*=val;
+		calc/=(db_low-CHANNEL_MIN_100);
+		out=calc;
+		out+=min;
+	}
 	else
-		val=mid+(val-db_high)*(max-mid)/(CHANNEL_MAX_100-1-db_high);
-	return val;
+	{
+		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
@@ -163,6 +158,29 @@ uint16_t convert_channel_frsky(uint8_t num)
 /******************************/
 /**  FrSky D and X routines  **/
 /******************************/
+
+#if defined(FRSKYX_CC2500_INO) || defined(FRSKYX_RX_CC2500_INO)
+//**CRC**
+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)
+{
+	uint16_t word ;
+	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 crc = 0;
+	for(uint8_t i=0; i < len; i++)
+		crc = (crc<<8) ^ frskyX_CRCTable((uint8_t)(crc>>8) ^ *data++);
+	return crc;
+}
+#endif
+
+
 #if defined(FRSKYD_CC2500_INO) || defined(FRSKYX_CC2500_INO)
 enum {
 	FRSKY_BIND		= 0,
--- a/Multiprotocol/FrSkyX_Rx_cc2500.ino
+++ b/Multiprotocol/FrSkyX_Rx_cc2500.ino
@@ -0,0 +1,373 @@
+/*
+ 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("%ld 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
--- a/Multiprotocol/FrSkyX_cc2500.ino
+++ b/Multiprotocol/FrSkyX_cc2500.ino
@@ -55,25 +55,6 @@ static void __attribute__((unused)) frskyX_initialize_data(uint8_t adr)
 	CC2500_WriteReg(CC2500_07_PKTCTRL1,0x05);
 }

-//**CRC**
-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)
-{
-	uint16_t word ;
-	word = pgm_read_word(&frskyX_CRC_Short[val&0x0F]) ;
-	val /= 16 ;
-	return word ^ (0x1081 * val) ;
-}
-static uint16_t __attribute__((unused)) frskyX_crc_x(uint8_t *data, uint8_t len)
-{
-	uint16_t crc = 0;
-	for(uint8_t i=0; i < len; i++)
-		crc = (crc<<8) ^ frskyX_CRCTable((uint8_t)(crc>>8) ^ *data++);
-	return crc;
-}
-
 static void __attribute__((unused)) frskyX_build_bind_packet()
 {
 	packet[0] = (sub_protocol & 2 ) ? 0x20 : 0x1D ; // LBT or FCC
--- a/Multiprotocol/GW008_nrf24l01.ino
+++ b/Multiprotocol/GW008_nrf24l01.ino
@@ -47,7 +47,7 @@ static void __attribute__((unused)) GW008_send_packet(uint8_t bind)
 	}
 	else
 	{
-		packet[1] = 0x01 | GET_FLAG(CH5, 0x40); // flip
+		packet[1] = 0x01 | GET_FLAG(CH5_SW, 0x40); // flip
 		packet[2] = convert_channel_16b_limit(AILERON , 200, 0); // aileron
 		packet[3] = convert_channel_16b_limit(ELEVATOR, 0, 200); // elevator
 		packet[4] = convert_channel_16b_limit(RUDDER  , 200, 0); // rudder
@@ -125,7 +125,7 @@ uint16_t GW008_callback()
 				NRF24L01_SetTxRxMode(TX_EN);
 				GW008_send_packet(1);
 				phase = GW008_BIND2;
-				return 300;
+				return 850; // minimum value 750 for STM32
 			}
 			break;
 		case GW008_BIND2:
--- a/Multiprotocol/Hitec_cc2500.ino
+++ b/Multiprotocol/Hitec_cc2500.ino
@@ -324,12 +324,20 @@ uint16_t ReadHITEC()
 							//		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);
+							#if defined(HITEC_FW_TELEMETRY) || defined(HITEC_HUB_TELEMETRY)
+								TX_RSSI = pkt[13];
+								if(TX_RSSI >=128)
+									TX_RSSI -= 128;
+								else
+									TX_RSSI += 128;
+								TX_LQI = pkt[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]=pkt[13];				// TX RSSI
-									pkt[1]=pkt[14]&0x7F;		// TX LQI
+									pkt[0]=TX_RSSI;				// TX RSSI
+									pkt[1]=TX_LQI;				// TX LQI
 									uint8_t offset=pkt[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
@@ -351,12 +359,6 @@ uint16_t ReadHITEC()
 											v_lipo2 =  (pkt[6])<<5 | (pkt[7])>>3;	// calculation in float is volt=(pkt[6]<<8+pkt[7])/10
 											break;
 									}
-									TX_RSSI = pkt[13];
-									if(TX_RSSI >=128)
-										TX_RSSI -= 128;
-									else
-										TX_RSSI += 128;
-									TX_LQI = pkt[14]&0x7F;
 									telemetry_link=1;			// telemetry hub available
 								}
 							#endif
@@ -403,7 +405,7 @@ packet[1] = TX LQI value
 packet[2] = frame number
 packet[3-7] telemetry data

-The frame number takes the following values: 0x00, 0x11, 0x12, ..., 0x18. The frames can be present or not, they also do not have to follow each others.
+The frame number takes the following values: 0x00, 0x11, 0x12, ..., 0x1C. The frames can be present or not, they also do not have to follow each others.
 Here is a description of the telemetry data for each frame number:
 - frame 0x00
 data byte 0 -> 0x00				unknown
@@ -414,9 +416,9 @@ data byte 4 -> RX Batt Volt_L => RX Batt=(Volt_H*256+Volt_L)/28
 - frame 0x11
 data byte 0 -> 0xAF				start of frame
 data byte 1 -> 0x00				unknown
-data byte 2 -> 0x2D				frame type but constant here
-data byte 3 -> Volt1_H
-data byte 4 -> Volt1_L			RX Batt=(Volt1_H*256+Volt1_L)/28 V
+data byte 2 -> 0x2D				station type 0x2D=standard station nitro or electric, 0xAC=advanced station
+data byte 3 -> RX Batt Volt_H
+data byte 4 -> RX Batt Volt_L => RX Batt=(Volt_H*256+Volt_L)/28
 - frame 0x12
 data byte 0 -> Lat_sec_H		GPS : latitude second
 data byte 1 -> Lat_sec_L		signed int : 1/100 of second
@@ -431,9 +433,9 @@ data byte 3 -> 					signed int : +=Est, - = west
 data byte 4 -> Temp2			Temperature2=Temp2-40°C
 - frame 0x14
 data byte 0 -> Speed_H
-data byte 1 -> Speed_L			Speed=Speed_H*256+Speed_L km/h
+data byte 1 -> Speed_L			GPS Speed=Speed_H*256+Speed_L km/h
 data byte 2 -> Alti_sea_H
-data byte 3 -> Alti_sea_L		Altitude sea=Alti_sea_H*256+Alti_sea_L m
+data byte 3 -> Alti_sea_L		GPS Altitude=Alti_sea_H*256+Alti_sea_L m
 data byte 4 -> Temp1			Temperature1=Temp1-40°C
 - frame 0x15
 data byte 0 -> FUEL
@@ -448,15 +450,30 @@ data byte 2 -> Date_day
 data byte 3 -> Time_hour		GPS Time
 data byte 4 -> Time_min
 - frame 0x17
-data byte 0 -> 0x00	COURSEH
-data byte 1 -> 0x00	COURSEL		GPS Course = COURSEH*256+COURSEL
-data byte 2 -> 0x00				GPS count
+data byte 0 -> COURSEH
+data byte 1 -> COURSEL			GPS heading = COURSEH*256+COURSEL in degrees
+data byte 2 -> Count			GPS satellites
 data byte 3 -> Temp3			Temperature3=Temp2-40°C
 data byte 4 -> Temp4			Temperature4=Temp3-40°C
 - frame 0x18
-data byte 1 -> Volt2_H
-data byte 2 -> Volt2_L			Volt2=(Volt2_H*256+Volt2_L)/10 V
-data byte 3 -> AMP1_L
-data byte 4 -> AMP1_H			Amp=(AMP1_H*256+AMP1_L -180)/14 in signed A
+data byte 0 -> Volt_L			Volt=(Volt_H*256+Volt_L)/10 V
+data byte 1 -> Volt_H
+data byte 2 -> AMP_L
+data byte 3 -> AMP_H			Amp=(AMP1_*256+AMP_L -180)/14 in signed A
+- frame 0x19					Servo sensor
+data byte 0 -> AMP_Servo1		Amp=AMP_Servo1/10 in A
+data byte 1 -> AMP_Servo2		Amp=AMP_Servo2/10 in A
+data byte 2 -> AMP_Servo3		Amp=AMP_Servo3/10 in A
+data byte 3 -> AMP_Servo4		Amp=AMP_Servo4/10 in A
+- frame 0x1A
+data byte 2 -> ASpeed_H			Air speed=ASpeed_H*256+ASpeed_L km/h
+data byte 3 -> ASpeed_L
+- frame 0x1B					Variometer sensor
+data byte 0 -> Alti1H
+data byte 1 -> Alti1L			Altitude unfiltered
+data byte 2 -> Alti2H
+data byte 3 -> Alti2L			Altitude filtered
+- frame 0x1C					Unknown
+- frame 0x22					Unknown
 */
 #endif
--- a/Multiprotocol/Multi.txt
+++ b/Multiprotocol/Multi.txt
@@ -47,7 +47,10 @@
 47,GD00X,GD_V1,GD_V2
 48,V761
 49,KF606
-50,REDPINE,FAST,SLOW
-51,POTENSIC,A20
+50,Redpine,Fast,Slow
+51,Potensic,A20
 52,ZSX,280
+53,Flyzone,FZ-410
+54,Scanner
+55,FrskyX_RX,FCC,EU_LBT
 63,XN_DUMP,250K,1M,2M
--- a/Multiprotocol/Multiprotocol.h
+++ b/Multiprotocol/Multiprotocol.h
@@ -19,7 +19,7 @@
 #define VERSION_MAJOR		1
 #define VERSION_MINOR		2
 #define VERSION_REVISION	1
-#define VERSION_PATCH_LEVEL	71
+#define VERSION_PATCH_LEVEL	84

 //******************
 // Protocols
@@ -80,6 +80,8 @@ enum PROTOCOLS
 	PROTO_POTENSIC	= 51,	// =>NRF24L01
 	PROTO_ZSX		= 52,	// =>NRF24L01
 	PROTO_FLYZONE	= 53,	// =>A7105
+	PROTO_SCANNER	= 54,	// =>CC2500
+	PROTO_FRSKYX_RX	= 55,	// =>CC2500
 	PROTO_XN297DUMP	= 63,	// =>NRF24L01
 };

@@ -287,6 +289,11 @@ enum TRAXXAS
 {
 	RX6519	= 0,
 };
+enum FRSKYX_RX
+{
+	FRSKYX_FCC	= 0,
+	FRSKYX_LBT
+};

 #define NONE 		0
 #define P_HIGH		1
@@ -302,6 +309,7 @@ struct PPM_Parameters
 	uint8_t power : 1;
 	uint8_t autobind : 1;
 	uint8_t option;
+	uint32_t chan_order;
 };

 // Telemetry
@@ -318,6 +326,9 @@ enum MultiPacketTypes
 	MULTI_TELEMETRY_SYNC			= 8,
 	MULTI_TELEMETRY_SPORT_POLLING	= 9,
 	MULTI_TELEMETRY_HITEC			= 10,
+	MULTI_TELEMETRY_SCANNER			= 11,
+	MULTI_TELEMETRY_AFHDS2A_AC		= 12,
+	MULTI_TELEMETRY_RX_CHANNELS		= 13,
 };

 // Macros
@@ -401,7 +412,7 @@ enum MultiPacketTypes
 //********************
 //** Debug messages **
 //********************
-#if defined(STM32_BOARD) && defined (DEBUG_SERIAL)
+#if defined(STM32_BOARD) && (defined (DEBUG_SERIAL) || defined (ARDUINO_MULTI_DEBUG))
 	uint16_t debug_time=0;
 	#define debug(msg, ...)  {char debug_buf[64]; sprintf(debug_buf, msg, ##__VA_ARGS__); Serial.write(debug_buf);}
 	#define debugln(msg, ...)  {char debug_buf[64]; sprintf(debug_buf, msg "\r\n", ##__VA_ARGS__); Serial.write(debug_buf);}
@@ -564,6 +575,7 @@ 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 per model, end is 178+51=229
 //#define CONFIG_EEPROM_OFFSET 	210		// Current configuration of the multimodule

 //****************************************
@@ -636,6 +648,8 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 					POTENSIC	51
 					ZSX			52
 					FLYZONE		53
+					SCANNER		54
+					FRSKYX_RX	55
   BindBit=>		0x80	1=Bind/0=No
   AutoBindBit=>	0x40	1=Yes /0=No
   RangeCheck=>		0x20	1=Yes /0=No
@@ -777,6 +791,9 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 			RED_SLOW	1
 		sub_protocol==TRAXXAS
 			RX6519		0
+		sub_protocol==FRSKYX_RX
+			FCC			0
+			LBT			1

   Power value => 0x80	0=High/1=Low
  Stream[3]   = option_protocol;
@@ -790,7 +807,7 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
 	2047	+125%
   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=hold, 2047=no pulse. If failsafe is not set or RX then failsafe packets should not be sent.
+      0=no pulse, 2047=hold. If failsafe is not set or RX then failsafe packets should not be sent.
 */
 /*
  Multimodule Status
@@ -847,6 +864,7 @@ 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 = current protocol supports failsafe
   [5] major
   [6] minor
   [7] revision
@@ -861,7 +879,6 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --

 	*No* usual frsky byte stuffing and without start/stop byte (0x7e)

-
  Type 0x04 Spektrum telemetry data
   data[0] TX RSSI
   data[1-15] telemetry data
@@ -872,7 +889,7 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
    technically DSM bind data is only 10 bytes but multi sends 16
    like with telemtery, check length field)

-  Type 0x06 Flysky AFHDS2 telemetry data
+  Type 0x06 Flysky AFHDS2 telemetry data type 0xAA
   length: 29
   data[0] = RSSI value
   data[1-28] telemetry data
@@ -885,4 +902,22 @@ Serial: 100000 Baud 8e2      _ xxxx xxxx p --
   data[3-7] telemetry data
   Full description at the bottom of Hitec_cc2500.ino

+  Type 0x0B Spectrum Scanner telemetry data
+   length: 6
+   data[0] = start channel (2400 + x*0.333 Mhz)
+   data[1-5] power levels
+
+  Type 0x0C Flysky AFHDS2 telemetry data type 0xAC
+   length: 29
+   data[0] = RSSI value
+   data[1-28] telemetry data
+
+  Type 0x0D RX channels forwarding
+   length: variable
+   data[0] = received packets per second
+   data[1] = rssi
+   data[2] = start channel
+   data[3] = number of channels to follow
+   data[4-]= packed channels data, 11 bit per channel
+
 */
--- a/Multiprotocol/Multiprotocol.ino
+++ b/Multiprotocol/Multiprotocol.ino
@@ -114,7 +114,11 @@ uint8_t  armed, arm_flags, arm_channel_previous;
 uint8_t  num_ch;

 #ifdef CC2500_INSTALLED
-	uint8_t calData[50];
+	#ifdef SCANNER_CC2500_INO
+		uint8_t calData[255];
+	#else
+		uint8_t calData[50];
+	#endif
 #endif

 #ifdef CHECK_FOR_BOOTLOADER
@@ -143,6 +147,7 @@ uint8_t protocol_flags=0,protocol_flags2=0;
 // PPM variable
 volatile uint16_t PPM_data[NUM_CHN];
 volatile uint8_t  PPM_chan_max=0;
+uint32_t chan_order=0;
 #endif

 #if not defined (ORANGE_TX) && not defined (STM32_BOARD)
@@ -167,7 +172,7 @@ volatile uint8_t rx_ok_buff[RXBUFFER_SIZE];
 volatile uint8_t discard_frame = 0;

 // Telemetry
-#define MAX_PKT 29
+#define MAX_PKT 30
 uint8_t pkt[MAX_PKT];//telemetry receiving packets
 #if defined(TELEMETRY)
 	#ifdef INVERT_TELEMETRY
@@ -224,7 +229,25 @@ void setup()
 	// Setup diagnostic uart before anything else
 	#ifdef DEBUG_SERIAL
 		Serial.begin(115200,SERIAL_8N1);
-		while (!Serial); // Wait for ever for the serial port to connect...
+
+		// Wait up to 30s for a serial connection; double-blink the LED while we wait
+		unsigned long currMillis = millis();
+		unsigned long initMillis = currMillis;
+		pinMode(LED_pin,OUTPUT);
+		LED_off;
+		while (!Serial && (currMillis - initMillis) <= 30000) {
+			LED_on;
+			delay(100);
+			LED_off;
+			delay(100);
+			LED_on;
+			delay(100);
+			LED_off;
+			delay(500);
+			currMillis = millis();
+		}
+
+		delay(50);  // Brief delay for FTDI debugging
 		debugln("Multiprotocol version: %d.%d.%d.%d", VERSION_MAJOR, VERSION_MINOR, VERSION_REVISION, VERSION_PATCH_LEVEL);
 	#endif

@@ -413,9 +436,10 @@ void setup()
 		#endif
 		
 		protocol		=	PPM_prot_line->protocol;
-		cur_protocol[1] = protocol;
+		cur_protocol[1] =	protocol;
 		sub_protocol   	=	PPM_prot_line->sub_proto;
 		RX_num			=	PPM_prot_line->rx_num;
+		chan_order		=	PPM_prot_line->chan_order;

 		//Forced frequency tuning values for CC2500 protocols
 		#if defined(FORCE_FRSKYD_TUNING) && defined(FRSKYD_CC2500_INO)
@@ -605,6 +629,8 @@ uint8_t Update_All()
 	#ifdef ENABLE_PPM
 		if(mode_select!=MODE_SERIAL && IS_PPM_FLAG_on)		// PPM mode and a full frame has been received
 		{
+			uint32_t chan_or=chan_order;
+			uint8_t ch;
 			for(uint8_t i=0;i<PPM_chan_max;i++)
 			{ // update servo data without interrupts to prevent bad read
 				uint16_t val;
@@ -614,9 +640,20 @@ uint8_t Update_All()
 				val=map16b(val,PPM_MIN_100*2,PPM_MAX_100*2,CHANNEL_MIN_100,CHANNEL_MAX_100);
 				if(val&0x8000) 					val=CHANNEL_MIN_125;
 				else if(val>CHANNEL_MAX_125)	val=CHANNEL_MAX_125;
-				Channel_data[i]=val;
+				if(chan_or)
+				{
+					ch=chan_or>>28;
+					if(ch)
+						Channel_data[ch-1]=val;
+					else
+						Channel_data[i]=val;
+					chan_or<<=4;
+				}
+				else
+					Channel_data[i]=val;
 			}
 			PPM_FLAG_off;									// wait for next frame before update
+			PPM_failsafe();
 			update_channels_aux();
 			INPUT_SIGNAL_on;								// valid signal received
 			last_signal=millis();
@@ -625,7 +662,7 @@ uint8_t Update_All()
 	update_led_status();
 	#if defined(TELEMETRY)
 		#if ( !( defined(MULTI_TELEMETRY) || defined(MULTI_STATUS) ) )
-			if( (protocol==PROTO_FRSKYD) || (protocol==PROTO_BAYANG) || (protocol==PROTO_NCC1701) || (protocol==PROTO_BUGS) || (protocol==PROTO_BUGSMINI) || (protocol==PROTO_HUBSAN) || (protocol==PROTO_AFHDS2A) || (protocol==PROTO_FRSKYX) || (protocol==PROTO_DSM) || (protocol==PROTO_CABELL)  || (protocol==PROTO_HITEC))
+			if( (protocol == PROTO_FRSKYX_RX) || (protocol == PROTO_SCANNER) || (protocol==PROTO_FRSKYD) || (protocol==PROTO_BAYANG) || (protocol==PROTO_NCC1701) || (protocol==PROTO_BUGS) || (protocol==PROTO_BUGSMINI) || (protocol==PROTO_HUBSAN) || (protocol==PROTO_AFHDS2A) || (protocol==PROTO_FRSKYX) || (protocol==PROTO_DSM) || (protocol==PROTO_CABELL)  || (protocol==PROTO_HITEC))
 		#endif
 				TelemetryUpdate();
 	#endif
@@ -657,6 +694,32 @@ uint8_t Update_All()
 	return 0;
 }

+#ifdef ENABLE_PPM
+void PPM_failsafe()
+{
+	static uint8_t counter=0;
+	
+	if(IS_BIND_IN_PROGRESS || IS_FAILSAFE_VALUES_on) 	// bind is not finished yet or Failsafe already being sent
+		return;
+	BIND_SET_INPUT;
+	BIND_SET_PULLUP;
+	if(IS_BIND_BUTTON_on)
+	{// bind button pressed
+		counter++;
+		if(counter>227)
+		{ //after 5s with PPM frames @22ms
+			counter=0;
+			for(uint8_t i=0;i<NUM_CHN;i++)
+				Failsafe_data[i]=Channel_data[i];
+			FAILSAFE_VALUES_on;
+		}
+	}
+	else
+		counter=0;
+	BIND_SET_OUTPUT;
+}
+#endif
+
 // Update channels direction and Channel_AUX flags based on servo AUX positions
 static void update_channels_aux(void)
 {
@@ -891,7 +954,7 @@ static void protocol_init()
 		set_rx_tx_addr(MProtocol_id);
 		
 		#ifdef FAILSAFE_ENABLE
-			InitFailsafe();
+			FAILSAFE_VALUES_off;
 		#endif
 	
 		blink=millis();
@@ -998,6 +1061,22 @@ static void protocol_init()
 						remote_callback = ReadHITEC;
 						break;
 				#endif
+				#if defined(SCANNER_CC2500_INO)
+					case PROTO_SCANNER:
+						PE1_off;
+						PE2_on;	//antenna RF2
+						next_callback = initScanner();
+						remote_callback = Scanner_callback;
+						break;
+				#endif
+				#if defined(FRSKYX_RX_CC2500_INO)
+					case PROTO_FRSKYX_RX:
+						PE1_off;
+						PE2_on;	//antenna RF2
+						next_callback = initFrSkyX_Rx();
+						remote_callback = FrSkyX_Rx_callback;
+						break;
+				#endif
 			#endif
 			#ifdef CYRF6936_INSTALLED
 				#if defined(DSM_CYRF6936_INO)
@@ -1435,7 +1514,7 @@ void update_serial_data()
 		uint16_t temp=((*((uint32_t *)p))>>dec)&0x7FF;
 		#ifdef FAILSAFE_ENABLE
 			if(failsafe)
-				Failsafe_data[i]=temp;			//value range 0..2047, 0=no pulses, 2047=hold
+				Failsafe_data[i]=temp;			//value range 0..2047, 0=no pulse, 2047=hold
 			else
 		#endif
 				Channel_data[i]=temp;			//value range 0..2047, 0=-125%, 2047=+125%
@@ -1932,3 +2011,20 @@ static uint32_t random_id(uint16_t address, uint8_t create_new)
 		}
 	}
 #endif
+
+// Set the flags for detecting and writing the firmware signature
+#if defined (CHECK_FOR_BOOTLOADER)
+    bool firmwareFlag_CHECK_FOR_BOOTLOADER = true;
+#endif
+#if defined (MULTI_STATUS)
+    bool firmwareFlag_MULTI_STATUS = true;
+#endif
+#if defined (MULTI_TELEMETRY)
+    bool firmwareFlag_MULTI_TELEMETRY = true;
+#endif
+#if defined (INVERT_TELEMETRY)
+    bool firmwareFlag_INVERT_TELEMETRY = true;
+#endif
+#if defined (DEBUG_SERIAL)
+    bool firmwareFlag_DEBUG_SERIAL = true;
+#endif
--- a/Multiprotocol/NRF24l01_SPI.ino
+++ b/Multiprotocol/NRF24l01_SPI.ino
@@ -286,7 +286,7 @@ const uint16_t PROGMEM xn297_crc_xorout_scrambled_enhanced[] = {

 // unscrambled enhanced mode crc xorout table
 // unused so far
-/*
+#ifdef XN297DUMP_NRF24L01_INO
 const uint16_t xn297_crc_xorout_enhanced[] = {
    0x0000, 0x8BE6, 0xD8EC, 0xB87A, 0x42DC, 0xAA89,
    0x83AF, 0x10E4, 0xE83E, 0x5C29, 0xAC76, 0x1C69,
@@ -294,7 +294,7 @@ const uint16_t xn297_crc_xorout_enhanced[] = {
    0x7CDB, 0x7A14, 0xD5D2, 0x57D7, 0xE31D, 0xCE42,
    0x648D, 0xBF2D, 0x653B, 0x190C, 0x9117, 0x9A97,
    0xABFC, 0xE68E, 0x0DE7, 0x28A2, 0x1965 };
-*/
+#endif

 static uint8_t bit_reverse(uint8_t b_in)
 {
--- a/Multiprotocol/Scanner_cc2500.ino
+++ b/Multiprotocol/Scanner_cc2500.ino
@@ -0,0 +1,152 @@
+/*
+ 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(SCANNER_CC2500_INO)
+
+#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_AVERAGE_INTVL		20
+#define SCAN_MAX_COUNT			5
+#define SCAN_CHANS_PER_PACKET	5
+
+static uint8_t scan_tlm_index;
+
+enum ScanStates {
+	SCAN_CHANNEL_CHANGE = 0,
+	SCAN_GET_RSSI = 1,
+};
+
+static void __attribute__((unused)) Scanner_cc2500_init()
+{
+	/* Initialize CC2500 chip */
+	CC2500_WriteReg(CC2500_08_PKTCTRL0, 0x12);   // Packet Automation Control
+    CC2500_WriteReg(CC2500_0B_FSCTRL1,  0x0A);   // Frequency Synthesizer Control
+    CC2500_WriteReg(CC2500_0C_FSCTRL0,  0x00);   // Frequency Synthesizer Control
+    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_SetTxRxMode(RX_EN);  // Receive mode
+	CC2500_Strobe(CC2500_SIDLE);
+	CC2500_Strobe(CC2500_SRX);
+
+	delayMicroseconds(1000);  // wait for RX to activate
+}
+
+static void __attribute__((unused)) Scanner_calibrate()
+{
+	for (uint8_t c = 0; c < SCAN_MAX_RADIOCHANNEL; c++)
+	{
+		CC2500_Strobe(CC2500_SIDLE);
+		CC2500_WriteReg(CC2500_0A_CHANNR, c);
+		CC2500_Strobe(CC2500_SCAL);
+		delayMicroseconds(900);
+		calData[c] = CC2500_ReadReg(CC2500_25_FSCAL1);
+	}
+	CC2500_Strobe(CC2500_SIDLE);
+}
+
+static void __attribute__((unused)) Scanner_scan_next()
+{
+	CC2500_WriteReg(CC2500_0A_CHANNR, rf_ch_num);
+	CC2500_WriteReg(CC2500_25_FSCAL1, calData[rf_ch_num]);
+	CC2500_Strobe(CC2500_SFRX);
+	CC2500_Strobe(CC2500_SRX);
+}
+
+static int __attribute__((unused)) Scanner_scan_rssi()
+{
+	uint8_t rssi;
+	rssi = CC2500_ReadReg(0x40 | CC2500_34_RSSI);  // 0.5 db/count, RSSI value read from the RSSI status register is a 2's complement number
+	uint8_t rssi_rel;
+	if (rssi >= 128) {
+		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)
+	}
+	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;
+				}
+			}
+	}
+	return SCAN_AVERAGE_INTVL;
+}
+
+uint16_t initScanner(void)
+{
+	rf_ch_num = SCAN_MAX_RADIOCHANNEL;
+	scan_tlm_index = 0;
+	telemetry_link = 0;
+	phase = SCAN_CHANNEL_CHANGE;
+	Scanner_cc2500_init();
+	CC2500_Strobe(CC2500_SRX);
+	Scanner_calibrate();
+	CC2500_Strobe(CC2500_SIDLE);
+	CC2500_SetTxRxMode(RX_EN);
+	CC2500_Strobe(CC2500_SRX);  // Receive mode
+	return 1250;
+}
+
+#endif
--- a/Multiprotocol/Telemetry.ino
+++ b/Multiprotocol/Telemetry.ino
@@ -170,13 +170,40 @@ static void multi_send_status()
 	#endif
 #endif

+#ifdef SCANNER_TELEMETRY
+	void spectrum_scanner_frame()
+	{
+		#if defined MULTI_TELEMETRY
+			multi_send_header(MULTI_TELEMETRY_SCANNER, SCAN_CHANS_PER_PACKET + 1);
+		#else
+			Serial_write(0xAA);						// Telemetry packet
+		#endif
+		Serial_write(pkt[0]);						// start channel
+		for(uint8_t ch = 0; ch < SCAN_CHANS_PER_PACKET; ch++)
+			Serial_write(pkt[ch+1]);				// RSSI power levels
+	}
+#endif
+
+#ifdef FRSKYX_RX_TELEMETRY
+	void frskyx_rx_channels_frame()
+	{
+		#if defined MULTI_TELEMETRY
+				multi_send_header(MULTI_TELEMETRY_RX_CHANNELS, 26);
+		#else
+				Serial_write(0xAA);					// Telemetry packet
+		#endif
+		for (uint8_t i = 0; i < 26; i++)
+			Serial_write(pkt[i]);					// pps, rssi, ch start, ch count, 16x ch data
+	}
+#endif
+
 #ifdef AFHDS2A_FW_TELEMETRY
 	void AFHDSA_short_frame()
 	{
 		#if defined MULTI_TELEMETRY
-			multi_send_header(MULTI_TELEMETRY_AFHDS2A, 29);
+			multi_send_header(pkt[29]==0xAA?MULTI_TELEMETRY_AFHDS2A:MULTI_TELEMETRY_AFHDS2A_AC, 29);
 		#else
-			Serial_write(0xAA);						// Telemetry packet
+			Serial_write(pkt[29]);					// Telemetry packet 0xAA or 0xAC
 		#endif
 		for (uint8_t i = 0; i < 29; i++)			// RSSI value followed by 4*7 bytes of telemetry data
 			Serial_write(pkt[i]);
@@ -996,6 +1023,24 @@ void TelemetryUpdate()
 		}
 	#endif

+	#if defined SCANNER_TELEMETRY
+		if (telemetry_link && protocol == PROTO_SCANNER)
+		{
+			spectrum_scanner_frame();
+			telemetry_link = 0;
+			return;
+		}
+	#endif
+
+	#if defined FRSKYX_RX_TELEMETRY
+		if (telemetry_link && protocol == PROTO_FRSKYX_RX)
+		{
+			frskyx_rx_channels_frame();
+			telemetry_link = 0;
+			return;
+		}
+	#endif
+
 		if((telemetry_link & 1 )&& protocol != PROTO_FRSKYX)
 		{	// FrSkyD + Hubsan + AFHDS2A + Bayang + Cabell + Hitec + Bugs + BugsMini + NCC1701
 			frsky_link_frame();
--- a/Multiprotocol/Validate.h
+++ b/Multiprotocol/Validate.h
@@ -19,9 +19,9 @@
 #endif

 // Check for minimum board file definition version for DIY multi-module boards
-#define MIN_AVR_BOARD 107
-#define MIN_ORX_BOARD 107
-#define MIN_STM32_BOARD 114
+#define MIN_AVR_BOARD 109
+#define MIN_ORX_BOARD 109
+#define MIN_STM32_BOARD 116
 //AVR
 #if (defined(ARDUINO_MULTI_NO_BOOT) && ARDUINO_MULTI_NO_BOOT < MIN_AVR_BOARD) || (defined(ARDUINO_MULTI_FLASH_FROM_TX) && ARDUINO_MULTI_FLASH_FROM_TX < MIN_AVR_BOARD)
 	#error You need to update your Multi 4-in-1 board definition.  Open Boards Manager and update to the latest version of the Multi 4-in-1 AVR Boards.
@@ -35,6 +35,11 @@
 	#error You need to update your Multi 4-in-1 board definition.  Open Boards Manager and update to the latest version of the Multi 4-in-1 STM32 Board.
 #endif

+// Enable serial debugging if a debugging option was chosen in the IDE
+#ifdef ARDUINO_MULTI_DEBUG
+	#define DEBUG_SERIAL
+#endif
+
 // Error if CHECK_FOR_BOOTLOADER is not enabled but a FLASH_FROM_TX board is selected
 #if (defined(ARDUINO_MULTI_FLASH_FROM_TX) || defined(ARDUINO_MULTI_STM32_FLASH_FROM_TX)) &! defined(CHECK_FOR_BOOTLOADER)
 	#if defined(STM32_BOARD)
@@ -44,9 +49,10 @@
 	#endif
 #endif

-// Error if CHECK_FOR_BOOTLOADER is enabled but the 'Flash from TX' bootloader
+// Warning if CHECK_FOR_BOOTLOADER is enabled but no bootloader
 #if defined(ARDUINO_MULTI_NO_BOOT) && defined(CHECK_FOR_BOOTLOADER)
-	#error "You have enabled CHECK_FOR_BOOTLOADER but not selected the 'Flash from TX' bootloader."
+	#undef CHECK_FOR_BOOTLOADER
+	#warning "Disabling CHECK_FOR_BOOTLOADER since no bootloader is selected."
 #endif

 //Check number of banks
@@ -186,6 +192,8 @@
 	#undef	REDPINE_CC2500_INO
 	#undef	HITEC_CC2500_INO
 	#undef	XN297L_CC2500_EMU
+	#undef	SCANNER_CC2500_INO
+	#undef	FRSKYX_RX_CC2500_INO
 #endif
 #ifndef NRF24L01_INSTALLED
 	#undef	BAYANG_NRF24L01_INO
@@ -242,9 +250,21 @@
 	#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
 #else
-	#if defined MULTI_TELEMETRY && not defined INVERT_TELEMETRY
-		#warning MULTI_TELEMETRY has been defined but not INVERT_TELEMETRY. They should be both enabled for OpenTX telemetry and status to work.
+	#if defined(MULTI_TELEMETRY) && defined(MULTI_STATUS)
+		#error You should choose either MULTI_TELEMETRY or MULTI_STATUS but not both.
+	#endif
+	#if not defined(SCANNER_CC2500_INO) || not defined(SCANNER_TELEMETRY)
+		#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
 	#endif
 	#if not defined(BAYANG_NRF24L01_INO)
 		#undef BAYANG_HUB_TELEMETRY
@@ -252,7 +272,7 @@
 	#if not defined(NCC1701_NRF24L01_INO)
 		#undef NCC1701_HUB_TELEMETRY
 	#endif
-	#if not ( defined(BUGS_A7105_INO) || defined(BUGSMINI_NRF24L01_INO) )
+	#if not defined(BUGS_A7105_INO) && not defined(BUGSMINI_NRF24L01_INO)
 		#undef BUGS_HUB_TELEMETRY
 	#endif
 	#if not defined(CABELL_NRF24L01_INO)
@@ -285,7 +305,7 @@
 	#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)
+	#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)
 		#undef TELEMETRY
 		#undef INVERT_TELEMETRY
 		#undef SPORT_POLLING
--- a/Multiprotocol/XN297Dump_nrf24l01.ino
+++ b/Multiprotocol/XN297Dump_nrf24l01.ino
@@ -76,10 +76,10 @@ 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];
-
 	// init crc
 	crc = 0xb5d2;
 	
+	//Try normal payload
 	// address
 	for (uint8_t i = 0; i < address_length; i++)
 	{
@@ -112,6 +112,56 @@ static boolean __attribute__((unused)) XN297Dump_process_packet(void)
 			return true;
 		}
 	}
+
+	//Try enhanced payload
+	crc = 0xb5d2;
+	packet_length=0;
+	uint16_t crc_enh;
+	for (uint8_t i = 0; i < XN297DUMP_MAX_PACKET_LEN-XN297DUMP_CRC_LENGTH; i++)
+	{
+		packet_sc[i]=packet[i]^xn297_scramble[i];
+		crc = crc16_update(crc, packet[i], 8);
+		crc_enh = crc16_update(crc, packet[i+1] & 0xC0, 2);
+		crcxored=(packet[i+1]<<10)|(packet[i+2]<<2)|(packet[i+3]>>6) ;
+		if((crc_enh ^ pgm_read_word(&xn297_crc_xorout_scrambled_enhanced[i - 3])) == crcxored)
+		{ // Found a valid CRC for the enhanced payload mode
+			packet_length=i;
+			scramble=true;
+			i++;
+			packet_sc[i]=packet[i]^xn297_scramble[i];
+			memcpy(packet_un,packet_sc,packet_length+2); // unscramble packet
+			break;
+		}
+		if((crc_enh ^ pgm_read_word(&xn297_crc_xorout_enhanced[i - 3])) == crcxored)
+		{ // Found a valid CRC for the enhanced payload mode
+			packet_length=i;
+			scramble=false;
+			memcpy(packet_un,packet,packet_length+2); 	// packet is unscrambled
+			break;
+		}
+	}
+	if(packet_length!=0)
+	{ // Found a valid CRC for the enhanced payload mode
+		debug("Enhanced ");
+		//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 )
+		}
+		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);
+		// address
+		for (uint8_t i = 0; i < address_length; i++)
+			packet[address_length-1-i]=packet_un[i];
+		// payload
+		for (uint8_t i = address_length; i < packet_length; i++)
+			packet[i] = bit_reverse((packet_un[i+1]<<2)|(packet_un[i+2]>>6));
+		return true;
+	}
+
 	return false;
 }

--- a/Multiprotocol/_Config.h
+++ b/Multiprotocol/_Config.h
@@ -31,8 +31,8 @@
 /*************************/
 //Allow flashing multimodule directly with TX(erky9x or opentx maintenance mode)
 //Instructions:https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/blob/master/docs/Flash_from_Tx.md
-//To enable this feature remove the "//" on the next line.  Requires a compatible bootloader or upload method to be selected when you use the Multi 4-in-1 Boards Manager definitions.
-//#define CHECK_FOR_BOOTLOADER
+//To disable this feature add "//" at the begining of the next line.  Requires a compatible bootloader or upload method to be selected when you use the Multi 4-in-1 Boards Manager definitions.
+#define CHECK_FOR_BOOTLOADER


 /*******************/
@@ -123,11 +123,12 @@
 /** Low Power **/
 //Low power is reducing the transmit power of the multi module. This setting is configurable per model in PPM (table below) or Serial mode (radio GUI).
 //It can be activated when flying indoor or small models since the distance is short or if a model is causing issues when flying closed to the TX.
-//By default low power is completly disabled on all rf chips to prevent mistakes, but you can enable it by uncommenting the lines below: 
-//#define A7105_ENABLE_LOW_POWER
-//#define CYRF6936_ENABLE_LOW_POWER
-//#define CC2500_ENABLE_LOW_POWER
-//#define NRF24L01_ENABLE_LOW_POWER
+//By default low power selection is enabled on all rf chips, but you can disable it by commenting (add //) the lines below if you don't want to risk
+//flying a model with low power.
+#define A7105_ENABLE_LOW_POWER
+#define CYRF6936_ENABLE_LOW_POWER
+#define CC2500_ENABLE_LOW_POWER
+#define NRF24L01_ENABLE_LOW_POWER


 /*****************/
@@ -165,7 +166,7 @@
 #define	DEVO_CYRF6936_INO
 #define	DSM_CYRF6936_INO
 #define	J6PRO_CYRF6936_INO
-#define TRAXXAS_CYRF6936_INO
+#define	TRAXXAS_CYRF6936_INO
 #define	WFLY_CYRF6936_INO
 #define	WK2x01_CYRF6936_INO

@@ -174,7 +175,9 @@
 #define	FRSKYD_CC2500_INO
 #define	FRSKYV_CC2500_INO
 #define	FRSKYX_CC2500_INO
+#define	FRSKYX_RX_CC2500_INO
 #define	HITEC_CC2500_INO
+#define	SCANNER_CC2500_INO
 #define	SFHSS_CC2500_INO
 #define	REDPINE_CC2500_INO

@@ -238,25 +241,12 @@
 /**************************/
 /*** FAILSAFE SETTINGS  ***/
 /**************************/
-//The module is using the same default failsafe values for all protocols which currently supports it:
-//  Devo, WK2x01, SFHSS, HISKY/HK310 and AFHDS2A
-//All channels are centered except throttle which is forced low.
-//If you want to diasble failsafe globally comment the line below using "//".
+//The following protocols are supporting failsafe: FrSkyX, Devo, WK2x01, SFHSS, HISKY/HK310 and AFHDS2A
+//In Serial mode failsafe is configured on the radio itself.
+//In PPM mode and only after the module is up and fully operational, press the bind button for at least 5sec to send the current stick positions as failsafe to the RX.
+//If you want to disable failsafe globally comment the line below using "//".
 #define FAILSAFE_ENABLE

-//Failsafe throttle low value in percentage.
-//Value between -125% and +125%. Default -100.
-#define FAILSAFE_THROTTLE_LOW -100
-
-//The radio using serial protocol can set failsafe data.
-// Two options are available:
-//  a. replace the default failsafe data with serial failsafe data when they are received.
-//  b. wait for the radio to provide failsafe before sending it. Enable advanced settings like "FAILSAFE NOT SET" or "FAILSAFE RX".
-// Option a. is the default since you have a protection even if no failsafe has been set on the radio.
-// You can force option b. by uncommenting the line below (remove the "//").
-//#define FAILSAFE_SERIAL_ONLY
-
-
 /**************************/
 /*** TELEMETRY SETTINGS ***/
 /**************************/
@@ -294,6 +284,8 @@
 #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 SCANNER_TELEMETRY			// Forward spectrum scanner data to TX
+#define FRSKYX_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).
@@ -360,99 +352,99 @@
 // short press the bind button multiple times until you reach the desired one. The bank number currently selected is indicated by the number of LED flash.
 // Full procedure is located here: https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/blob/master/Protocols_Details.md#protocol-selection-in-ppm-mode

-//The parameter below indicates the number of desired banks between 1 and 5. Default is 5.
-#define NBR_BANKS 5
+//The parameter below indicates the number of desired banks between 1 and 5. Default is 1.
+#define NBR_BANKS 1

 const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 #if NBR_BANKS > 0
 //******************************       BANK 1       ******************************
-//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option
-/*	1	*/	{PROTO_FLYSKY,	Flysky		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	2	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 0
-/*	3	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	1	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 1
-/*	4	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	2	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 2
-/*	5	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	3	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 3
-/*	6	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	2	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 4
-/*	7	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	3	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 5
-/*	8	*/	{PROTO_SFHSS,	H107		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	9	*/	{PROTO_FRSKYV,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40		},	// option=fine freq tuning
-/*	10	*/	{PROTO_FRSKYD,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40		},	// option=fine freq tuning
-/*	11	*/	{PROTO_FRSKYX,	CH_16		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40		},	// option=fine freq tuning
-/*	12	*/	{PROTO_FRSKYX,	EU_16		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40		},	// option=fine freq tuning
-/*	13	*/	{PROTO_DEVO	,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	14	*/	{PROTO_WK2x01,	WK2801		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
+//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option	Chan Order
+/*	1	*/	{PROTO_FLYSKY,	Flysky		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	2	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 0
+/*	3	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	1	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 1
+/*	4	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	2	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 2
+/*	5	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	3	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 3
+/*	6	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	2	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 4
+/*	7	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	3	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 5
+/*	8	*/	{PROTO_SFHSS,	H107		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	9	*/	{PROTO_FRSKYV,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40	,	0x00000000 },	// option=fine freq tuning
+/*	10	*/	{PROTO_FRSKYD,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40	,	0x00000000 },	// option=fine freq tuning
+/*	11	*/	{PROTO_FRSKYX,	CH_16		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40	,	0x00000000 },	// option=fine freq tuning
+/*	12	*/	{PROTO_FRSKYX,	EU_16		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40	,	0x00000000 },	// option=fine freq tuning
+/*	13	*/	{PROTO_DEVO	,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	14	*/	{PROTO_WK2x01,	WK2801		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
 #endif
 #if NBR_BANKS > 1
 //******************************       BANK 2       ******************************
-//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option
-/*	1	*/	{PROTO_DSM	,	DSM2_11		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6		},	// option=number of channels
-/*	2	*/	{PROTO_DSM	,	DSM2_22		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6		},	// option=number of channels
-/*	3	*/	{PROTO_DSM	,	DSMX_11		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6		},	// option=number of channels
-/*	4	*/	{PROTO_DSM	,	DSMX_22		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6		},	// option=number of channels
-/*	5	*/	{PROTO_DSM	,	DSM2_11		,	0	,	P_HIGH	,	NO_AUTOBIND	,	8		},	// option=number of channels
-/*	6	*/	{PROTO_DSM	,	DSM2_22		,	0	,	P_HIGH	,	NO_AUTOBIND	,	8		},	// option=number of channels
-/*	7	*/	{PROTO_DSM	,	DSMX_11		,	0	,	P_HIGH	,	NO_AUTOBIND	,	8		},	// option=number of channels
-/*	8	*/	{PROTO_DSM	,	DSMX_22		,	0	,	P_HIGH	,	NO_AUTOBIND	,	8		},	// option=number of channels
-/*	9	*/	{PROTO_SLT	,	SLT_V1		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6		},
-/*	10	*/	{PROTO_HUBSAN,	H107		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	11	*/	{PROTO_HUBSAN,	H301		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	12	*/	{PROTO_HUBSAN,	H501		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	13	*/	{PROTO_HISKY,	Hisky		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	14	*/	{PROTO_V2X2	,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
+//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option	Chan Order
+/*	1	*/	{PROTO_DSM	,	DSM2_11		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6	,	0x00000000 },	// option=number of channels
+/*	2	*/	{PROTO_DSM	,	DSM2_22		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6	,	0x00000000 },	// option=number of channels
+/*	3	*/	{PROTO_DSM	,	DSMX_11		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6	,	0x00000000 },	// option=number of channels
+/*	4	*/	{PROTO_DSM	,	DSMX_22		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6	,	0x00000000 },	// option=number of channels
+/*	5	*/	{PROTO_DSM	,	DSM2_11		,	0	,	P_HIGH	,	NO_AUTOBIND	,	8	,	0x00000000 },	// option=number of channels
+/*	6	*/	{PROTO_DSM	,	DSM2_22		,	0	,	P_HIGH	,	NO_AUTOBIND	,	8	,	0x00000000 },	// option=number of channels
+/*	7	*/	{PROTO_DSM	,	DSMX_11		,	0	,	P_HIGH	,	NO_AUTOBIND	,	8	,	0x00000000 },	// option=number of channels
+/*	8	*/	{PROTO_DSM	,	DSMX_22		,	0	,	P_HIGH	,	NO_AUTOBIND	,	8	,	0x00000000 },	// option=number of channels
+/*	9	*/	{PROTO_SLT	,	SLT_V1		,	0	,	P_HIGH	,	NO_AUTOBIND	,	6	,	0x00000000 },
+/*	10	*/	{PROTO_HUBSAN,	H107		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	11	*/	{PROTO_HUBSAN,	H301		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	12	*/	{PROTO_HUBSAN,	H501		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	13	*/	{PROTO_HISKY,	Hisky		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	14	*/	{PROTO_V2X2	,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
 #endif
 #if NBR_BANKS > 2
 //******************************       BANK 3       ******************************
-//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option
-/*	1	*/	{PROTO_ESKY	,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	2	*/	{PROTO_ESKY150,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	3	*/	{PROTO_ASSAN,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	4	*/	{PROTO_CORONA,	COR_V2		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	5	*/	{PROTO_SYMAX,	SYMAX		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	6	*/	{PROTO_KN	,	WLTOYS		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	7	*/	{PROTO_BAYANG,	BAYANG		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	8	*/	{PROTO_BAYANG,	H8S3D		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	9	*/	{PROTO_BAYANG,	X16_AH		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	10	*/	{PROTO_BAYANG,	IRDRONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	11	*/	{PROTO_H8_3D,	H8_3D		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	12	*/	{PROTO_H8_3D,	H20H		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	13	*/	{PROTO_H8_3D,	H20MINI		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	14	*/	{PROTO_H8_3D,	H30MINI		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
+//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option	Chan Order
+/*	1	*/	{PROTO_ESKY	,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	2	*/	{PROTO_ESKY150,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	3	*/	{PROTO_ASSAN,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	4	*/	{PROTO_CORONA,	COR_V2		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	5	*/	{PROTO_SYMAX,	SYMAX		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	6	*/	{PROTO_KN	,	WLTOYS		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	7	*/	{PROTO_BAYANG,	BAYANG		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	8	*/	{PROTO_BAYANG,	H8S3D		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	9	*/	{PROTO_BAYANG,	X16_AH		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	10	*/	{PROTO_BAYANG,	IRDRONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	11	*/	{PROTO_H8_3D,	H8_3D		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	12	*/	{PROTO_H8_3D,	H20H		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	13	*/	{PROTO_H8_3D,	H20MINI		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	14	*/	{PROTO_H8_3D,	H30MINI		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
 #endif
 #if NBR_BANKS > 3
 //******************************       BANK 4       ******************************
-//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option
-/*	1	*/	{PROTO_MJXQ	,	WLH08		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	2	*/	{PROTO_MJXQ	,	X600		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	3	*/	{PROTO_MJXQ	,	X800		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	4	*/	{PROTO_MJXQ	,	H26D		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	5	*/	{PROTO_MJXQ	,	E010		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	6	*/	{PROTO_MJXQ	,	H26WH		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	7	*/	{PROTO_HONTAI,	HONTAI		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	8	*/	{PROTO_HONTAI,	JJRCX1		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	9	*/	{PROTO_HONTAI,	X5C1		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	10	*/	{PROTO_HONTAI,	FQ777_951	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	11	*/	{PROTO_Q303	,	Q303		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	12	*/	{PROTO_Q303	,	CX35		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	13	*/	{PROTO_Q303	,	CX10D		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	14	*/	{PROTO_Q303	,	CX10WD		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
+//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option	Chan Order
+/*	1	*/	{PROTO_MJXQ	,	WLH08		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	2	*/	{PROTO_MJXQ	,	X600		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	3	*/	{PROTO_MJXQ	,	X800		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	4	*/	{PROTO_MJXQ	,	H26D		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	5	*/	{PROTO_MJXQ	,	E010		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	6	*/	{PROTO_MJXQ	,	H26WH		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	7	*/	{PROTO_HONTAI,	HONTAI		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	8	*/	{PROTO_HONTAI,	JJRCX1		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	9	*/	{PROTO_HONTAI,	X5C1		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	10	*/	{PROTO_HONTAI,	FQ777_951	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	11	*/	{PROTO_Q303	,	Q303		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	12	*/	{PROTO_Q303	,	CX35		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	13	*/	{PROTO_Q303	,	CX10D		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	14	*/	{PROTO_Q303	,	CX10WD		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
 #endif
 #if NBR_BANKS > 4
 //******************************       BANK 5       ******************************
-//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option
-/*	1	*/	{PROTO_CX10	,	CX10_GREEN	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	2	*/	{PROTO_CX10	,	CX10_BLUE	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	3	*/	{PROTO_CX10	,	DM007		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	4	*/	{PROTO_CX10	,	JC3015_1	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	5	*/	{PROTO_CX10	,	JC3015_2	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	6	*/	{PROTO_CX10	,	MK33041		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	7	*/	{PROTO_Q2X2	,	Q222		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	8	*/	{PROTO_Q2X2	,	Q242		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	9	*/	{PROTO_Q2X2	,	Q282		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	10	*/	{PROTO_CG023,	CG023		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	11	*/	{PROTO_CG023,	YD829		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	12	*/	{PROTO_FQ777,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	13	*/	{PROTO_YD717,	YD717		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	14	*/	{PROTO_MT99XX,	MT99		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
+//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option	Chan Order
+/*	1	*/	{PROTO_CX10	,	CX10_GREEN	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	2	*/	{PROTO_CX10	,	CX10_BLUE	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	3	*/	{PROTO_CX10	,	DM007		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	4	*/	{PROTO_CX10	,	JC3015_1	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	5	*/	{PROTO_CX10	,	JC3015_2	,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	6	*/	{PROTO_CX10	,	MK33041		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	7	*/	{PROTO_Q2X2	,	Q222		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	8	*/	{PROTO_Q2X2	,	Q242		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	9	*/	{PROTO_Q2X2	,	Q282		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	10	*/	{PROTO_CG023,	CG023		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	11	*/	{PROTO_CG023,	YD829		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	12	*/	{PROTO_FQ777,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	13	*/	{PROTO_YD717,	YD717		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	14	*/	{PROTO_MT99XX,	MT99		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
 #endif
 };
 // RX_Num is used for TX & RX match. Using different RX_Num values for each receiver will prevent starting a model with the false config loaded...
@@ -469,6 +461,15 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 // Option: the value is between -128 and +127.
 // The option value is only valid for some protocols, read this page for more information: https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/blob/master/Protocols_Details.md

+// Chan order: if the value is different from 0, this setting will remap the first 8 channels in any given order before giving them to the protocol.
+// It does not disable the automatic channel remapping of the protocol itself but changes the input of it.
+// Even if your TX is sending less than 8 channels you have to respect the format like if it was.
+// Examples:
+//  - 0x12345678 will give to the protocol the channels in the order 1,2,3,4,5,6,7,8 which is equivalent to 0x00000000.
+//  - 0x42315678 will give to the protocol the channels in the order 4,2,3,1,5,6,7,8 swapping channel 1 and 4.
+//  - 0x40010000 will give to the protocol the channels in the order 4,2,3,1,5,6,7,8 swapping channel 1 and 4. Note: 0 means leave the channel where it is.
+//  - 0x0000ABCD will give to the protocol the channels in the order 1,2,3,4,10,11,12,13 which potentially enables acces to channels not available on your TX. Note A=10,B=11,C=12,D=13,E=14,F=15.
+
 /* Available protocols and associated sub protocols to pick and choose from (Listed in alphabetical order)
 	PROTO_AFHDS2A
 		PWM_IBUS
@@ -545,6 +546,9 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 		CH_8
 		EU_16
 		EU_8
+	PROTO_FRSKYX_RX
+		FRSKYX_FCC
+		FRSKYX_LBT
 	PROTO_FY326
 		FY326
 		FY319
@@ -611,6 +615,8 @@ const PPM_Parameters PPM_prot[14*NBR_BANKS]=	{
 	PROTO_REDPINE
 		RED_FAST
 		RED_SLOW
+	PROTO_SCANNER
+		NONE
 	PROTO_SFHSS
 		NONE
 	PROTO_SHENQI
--- a/Multiprotocol/_MyConfig.h.example
+++ b/Multiprotocol/_MyConfig.h.example
@@ -60,20 +60,20 @@
 	#define MY_PPM_PROT		// Use the bellow protocol list
 	const PPM_Parameters My_PPM_prot[14*NBR_BANKS]={
 //******************************       BANK 1       ******************************
-//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option
-/*	1	*/	{PROTO_KN	,	WLTOYS		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	2	*/	{PROTO_FLYSKY,	Flysky		,	0	,	P_HIGH	,	AUTOBIND	,	0		},
-/*	3	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	1	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 1
-/*	4	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	2	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 2
-/*	5	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	3	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 3
-/*	6	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	2	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 4
-/*	7	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	3	,	P_HIGH	,	NO_AUTOBIND	,	0		},	// RX number 5
-/*	8	*/	{PROTO_SFHSS,	H107		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	9	*/	{PROTO_FRSKYV,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40		},	// option=fine freq tuning
-/*	10	*/	{PROTO_FRSKYD,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40		},	// option=fine freq tuning
-/*	11	*/	{PROTO_FRSKYX,	CH_16		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40		},	// option=fine freq tuning
-/*	12	*/	{PROTO_FRSKYX,	EU_16		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40		},	// option=fine freq tuning
-/*	13	*/	{PROTO_DEVO	,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
-/*	14	*/	{PROTO_WK2x01,	WK2801		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0		},
+//	Switch	Protocol 		Sub protocol	RX_Num	Power		Auto Bind		Option	Chan Order
+/*	1	*/	{PROTO_KN	,	WLTOYS		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	2	*/	{PROTO_FLYSKY,	Flysky		,	0	,	P_HIGH	,	AUTOBIND	,	0	,	0x00000000 },
+/*	3	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	1	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 1
+/*	4	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	2	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 2
+/*	5	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	3	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 3
+/*	6	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	2	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 4
+/*	7	*/	{PROTO_AFHDS2A,	PWM_IBUS	,	3	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },	// RX number 5
+/*	8	*/	{PROTO_SFHSS,	H107		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	9	*/	{PROTO_FRSKYV,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40	,	0x00000000 },	// option=fine freq tuning
+/*	10	*/	{PROTO_FRSKYD,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40	,	0x00000000 },	// option=fine freq tuning
+/*	11	*/	{PROTO_FRSKYX,	CH_16		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40	,	0x00000000 },	// option=fine freq tuning
+/*	12	*/	{PROTO_FRSKYX,	EU_16		,	0	,	P_HIGH	,	NO_AUTOBIND	,	40	,	0x00000000 },	// option=fine freq tuning
+/*	13	*/	{PROTO_DEVO	,	NONE		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
+/*	14	*/	{PROTO_WK2x01,	WK2801		,	0	,	P_HIGH	,	NO_AUTOBIND	,	0	,	0x00000000 },
 	};
 #endif
--- a/Protocols_Details.md
+++ b/Protocols_Details.md
@@ -65,63 +65,64 @@ You've upgraded the module but the radio does not display the name of the protoc
 
 # Available Protocol Table of Contents (Listed Alphabetically)

-Protocol Name|Protocol Number|Sub_Proto 0|Sub_Proto 1|Sub_Proto 2|Sub_Proto 3|Sub_Proto 4|Sub_Proto 5|Sub_Proto 6|Sub_Proto 7|RF Module
---|---|---|---|---|---|---|---|---|---|---
-[Assan](Protocols_Details.md#ASSAN---24)|24|ASSAN||||||||NRF24L01
-[Bayang](Protocols_Details.md#BAYANG---14)|14|Bayang|H8S3D|X16_AH|IRDRONE|DHD_D4||||NRF24L01
-[Bugs](Protocols_Details.md#BUGS---41)|41|BUGS||||||||A7105
-[BugsMini](Protocols_Details.md#BUGSMINI---42)|42|BUGSMINI|BUGS3H|||||||NRF24L01
-[Cabell](Protocols_Details.md#Cabell---34)|34|Cabell_V3|C_TELEM|-|-|-|-|F_SAFE|UNBIND|NRF24L01
-CFlie|38|CFlie||||||||NRF24L01
-[CG023](Protocols_Details.md#CG023---13)|13|CG023|YD829|||||||NRF24L01
-[Corona](Protocols_Details.md#CORONA---37)|37|COR_V1|COR_V2|FD_V3||||||CC2500
-[CX10](Protocols_Details.md#CX10---12)|12|GREEN|BLUE|DM007|-|J3015_1|J3015_2|MK33041||NRF24L01
-[Devo](Protocols_Details.md#DEVO---7)|7|Devo|8CH|10CH|12CH|6CH|7CH|||CYRF6936
-[DM002](Protocols_Details.md#DM002---33)|33|DM002||||||||NRF24L01
-[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
-[ESky](Protocols_Details.md#ESKY---16)|16|ESky||||||||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
-[Flyzone](Protocols_Details.md#FLYZONE---53)|53|Flyzone|FZ410|||||||A7105
-[FQ777](Protocols_Details.md#FQ777---23)|23|FQ777||||||||NRF24L01
-[FrskyD](Protocols_Details.md#FRSKYD---3)|3|FrskyD||||||||CC2500
-[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
-[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
-[H8_3D](Protocols_Details.md#H8_3D---36)|36|H8_3D|H20H|H20Mini|H30Mini|||||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
-[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
-[KN](Protocols_Details.md#KN---9)|9|WLTOYS|FEILUN|||||||NRF24L01
-[MJXq](Protocols_Details.md#MJXQ---18)|18|WLH08|X600|X800|H26D|E010*|H26WH|PHOENIX*||NRF24L01
-[MT99xx](Protocols_Details.md#MT99XX---17)|17|MT|H7|YZ|LS|FY805||||NRF24L01
-[NCC1701](Protocols_Details.md#NCC1701---44)|44|NCC1701||||||||NRF24L01
-[OpenLRS](Protocols_Details.md#OpenLRS---27)|27|||||||||None
-[Potensic](Protocols_Details.md#Potensic---51)|51|A20||||||||NRF24L01
-[Q2X2](Protocols_Details.md#Q2X2---29)|29|Q222|Q242|Q282||||||NRF24L01
-[Q303](Protocols_Details.md#Q303---31)|31|Q303|CX35|CX10D|CX10WD|||||NRF24L01
-[Redpine](Protocols_Details.md#Redpine---50)|50|FAST|SLOW|||||||NRF24L01
-[SFHSS](Protocols_Details.md#SFHSS---21)|21|SFHSS||||||||CC2500
-[Shenqi](Protocols_Details.md#Shenqi---19)|19|Shenqi||||||||NRF24L01
-[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
-[Traxxas](Protocols_Details.md#Traxxas---43)|43|Traxxas|RX6519|||||||CYRF6936
-[V2x2](Protocols_Details.md#V2X2---5)|5|V2x2|JXD506|||||||NRF24L01
-[V761](Protocols_Details.md#V761---48)|48|V761||||||||NRF24L01
-[V911S](Protocols_Details.md#V911S---46)|46|V911S*||||||||NRF24L01
-[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
-[YD717](Protocols_Details.md#YD717---8)|8|YD717|SKYWLKR|SYMAX4|XINXUN|NIHUI||||NRF24L01
-[ZSX](Protocols_Details.md#ZSX---52)|52|280||||||||NRF24L01
-* "*" 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.
+Protocol Name|Protocol Number|Sub_Proto 0|Sub_Proto 1|Sub_Proto 2|Sub_Proto 3|Sub_Proto 4|Sub_Proto 5|Sub_Proto 6|Sub_Proto 7|RF Module|Emulation
+---|---|---|---|---|---|---|---|---|---|---|---
+[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
+[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|
+CFlie|38|CFlie||||||||NRF24L01|
+[CG023](Protocols_Details.md#CG023---13)|13|CG023|YD829|||||||NRF24L01|XN297
+[Corona](Protocols_Details.md#CORONA---37)|37|COR_V1|COR_V2|FD_V3||||||CC2500|
+[CX10](Protocols_Details.md#CX10---12)|12|GREEN|BLUE|DM007|-|J3015_1|J3015_2|MK33041||NRF24L01|XN297
+[Devo](Protocols_Details.md#DEVO---7)|7|Devo|8CH|10CH|12CH|6CH|7CH|||CYRF6936|
+[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|
+[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|
+[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|
+[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|
+[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
+[H8_3D](Protocols_Details.md#H8_3D---36)|36|H8_3D|H20H|H20Mini|H30Mini|||||NRF24L01|XN297
+[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
+[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
+[KN](Protocols_Details.md#KN---9)|9|WLTOYS|FEILUN|||||||NRF24L01|
+[MJXq](Protocols_Details.md#MJXQ---18)|18|WLH08|X600|X800|H26D|E010*|H26WH|PHOENIX*||NRF24L01|XN297
+[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|
+[Potensic](Protocols_Details.md#Potensic---51)|51|A20||||||||NRF24L01|XN297
+[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
+[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|
+[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
+[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|
+[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.

 # A7105 RF Module

@@ -190,6 +191,8 @@ Note that the RX ouput will be AETR whatever the input channel order is.
 ## 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
+
 CH1|CH2|CH3|CH4
 ---|---|---|---
 A|E|T|R
@@ -339,6 +342,32 @@ 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,...
+
+Extended limits supported
+
+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.
+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.
+
+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_LBT - *1*
+EU_LBT protocol 8 or 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
+
 ## HITEC - *39*
 Models: OPTIMA, MINIMA and MICRO receivers.

@@ -380,6 +409,9 @@ 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.
+
 ***
 # CYRF6936 RF Module

@@ -771,10 +803,16 @@ FMODE and AUX7 have 4 positions: -100%..-50%=>0, -50%..5%=>1, 5%..50%=>2, 50%..1

 ## FY326 - *20*

+### Sub_protocol FY326 - *0*
+Model: FY326 Q7 Quadcopter
+
 CH1|CH2|CH3|CH4|CH5|CH6|CH7|CH8|CH9
 ---|---|---|---|---|---|---|---|---
 A|E|T|R|FLIP|RTH|HEADLESS|EXPERT|CALIBRATE

+### Sub_protocol FY319 - *1*
+Model: X6 FY319 Quadcopter (Needs Testing)
+
 ## FQ777 - *23*
 Model: FQ777-124 (with SV7241A)

--- a/docs/Advanced_Debug.md
+++ b/docs/Advanced_Debug.md
@@ -0,0 +1,19 @@
+# Enable the STM32 module serial debug feature
+
+To enable serial debug on your module you must know how to buid the firmware from the source code available on this GitHub. To do so follow this page: [Compiling and programming the STM32 module](Compiling_STM32.md).
+
+Procedure:
+1. Upload the debug firmware to the module:
+<img src="images/Debug1.png" />
+
+iRangeX+, Banggood and old Jumper 4in1 modules|Recent Jumper 4in1 modules with built-in CP2102|FTDI
+----------------------------------------------|-----------------------------------------------|----
+Use the Debug Option: "Native USB Debugging"|Use the Debug Option: "Serial/FTDI Debugging"|Use the Debug Option: "Serial/FTDI Debugging"
+Do not disconnect the USB cable. In case you have to do it, you have to connect the module, close and reopen the Serial Monitor to get the module working otherwise the status LED will do a [Fast double blink](Troubleshooting.md).|Do not disconnect the USB cable. In case you have to do it, you have to power the TX first, then connect the USB cable to the module and relaunch the Serial monitor.|No restrictions apart from relaunching the Serial monitor if you disconnect the FTDI from the PC.
+
+2. Power on the TX
+1. Open in the Arduino IDE the Serial Monitor: Tools->Serial Monitor or Ctrl+Shift+M<br> <img src="images/Serial_Monitor_1.png" />
+1. Make sure the settings at the bottom of the Serial Monitor window are the same as the picture above especially the baud rate set to 115200 baud
+1. The Serial Monitor window should show the module booting, selection of a different protocol and more depending on the protocol currently loaded<br> <img src="images/Serial_Monitor_2.png" />
+1. At this stage you can test whatever is needed or have been instructed to do. You can easily select text in the window to copy and paste it on the forum or in a text file.
+1. **Important: to use your module normally and before flying you must reupload the firmware as you usually do with the Debug Option set to "None"**
--- a/docs/Advanced_Topics.md
+++ b/docs/Advanced_Topics.md
@@ -1,11 +1,17 @@
-# Advanced Topics {This page is currently a proof of concept}
+# Advanced Topics
 Warning: the topics on this page are not for the fainthearted.  It is strongly recommended that you have some experience in getting up and runnning with your module before you dive in there.  On the other hand what is described on this page are some very useful options that could greatly increase the value and the enjoyment of your Multiprotocol module.

+# Enable STM32 module serial debug 
+This document describes how to enable serial debug for STM32 MULTI-modules.  This can be useful in case of issues with a protocol or to reverse a protocol based on the XN297L RF component.  See the [MULTI-Module Serial Debug](Advanced_Debug.md) page for more details.
+
+# XN297L dump feature 
+This document describes how to dump packets sent from a TX using a XN297L RF compatible component over the air on a STM32 MULTI-modules.  This can be useful to get details on a protocol or even fully reverse a protocol as used in many remote controls lately.  See the [MULTI-Module XN297L Dump](Advanced_XN297Ldump.md) page for more details.
+
+# EEPROM Backup and Restore
+This document describes how to back up and restore the EEPROM for both Atmega328p and STM32 MULTI-modules.  This can be useful if cloning a module, or to preserve settings.  See the [MULTI-Module EEPROM](EEPROM.md) page for more details.
+
 # Telemetry in PPM mode
 It is possible to access the telemetry stream coming from the receiver through the MULTI-module. This document describes a simple bluetooth module to stream telemetry information to a mobile device like an Android smartphone or tablet.  The method may be generalized to feed telemetry to the transmitter if the transmitter has the capabilities to process the information.  This is very useful with modules used in the PPM mode with transmitters that do not support telemetry.  See the [Advanced Bluetooth Telemetry](Advanced_Bluetooth_Telemetry.md) page for more details.  

 # Manually setting fuses on ATmega328
 This document describes a relatively simple process to set the fuses on ATmega328.   See the [Advanced Manually Setting ATmega328 Fuses](Advanced_Manually_Setting_ATmega328_Fuses.md) page for more details.  
-
-# EEPROM Backup and Restore
-This document describes how to back up and restore the EEPROM for both Atmega328p and STM32 MULTI-modules.  This can be useful if cloning a module, or to preserve settings.  See the [MULTI-Module EEPROM](EEPROM.md) page for more details.
--- a/docs/Advanced_XN297Ldump.md
+++ b/docs/Advanced_XN297Ldump.md
@@ -0,0 +1,16 @@
+# XN297L dump feature
+
+To get the XN297L dump feature working on your module you must know:
+1. How to buid the firmware from the source code available on this GitHub. To do so follow this page: [Compiling and programming the STM32 module](Compiling_STM32.md).
+1. How to enable serial debug [MULTI-Module Serial Debug](Advanced_Debug.md).
+
+Procedure to use the XN297L dump feature:
+1. Start the Multi module in serial debug mode with the Arduion IDE Serial Monitor open<br> <img src="images/Serial_Monitor_2.png" />
+1. Select the protocol 63 or "Custom 63" to enable the XN297L Dump protocol
+1. This protocol parameters are:
+   * sub_protocol or type or the second number after "Custom 63" is used to set the transmission speed: 0=250Kbps, 1=1Mbps and 2=2Mbps. Any other value will default to 1Mbps.
+   * RX_num or Receiver number sets the address length 3, 4 or 5 bytes. Any other value will default to an address length of 5 bytes.
+   * option sets the RF channel number used to receive packets between 0..84 . A value of -1 will automatically scan all channels one by one. Any other value will default to the RF channel 0.
+
+Examples:
+TBC
--- a/docs/Arduino_IDE_Boards.md
+++ b/docs/Arduino_IDE_Boards.md
@@ -40,6 +40,54 @@ The board definitions are installed using the Arduino IDE Boards Manager.
    * **Multi 4-in-1 (Atmega328p, 3.3V, 16MHz)** for the Atmega module
    * **Multi 4-in-1 (OrangeRX)** for the OrangeRX module

+## Install device drivers
+
+### Windows 7 or newer:
+1. If you haven't already done so, clone or download and unpack the Multiprocol source
+1. Open the folder where you unzipped or cloned the Multiprotocol project
+1. Browse to **\BootLoaders\Boards\Windows**
+1. Run **install-drivers.bat**
+1. Follow the prompts to install the two drivers
+
+### Windows XP or older
+1. Download and install the legacy Windows XP drivers from [here](https://github.com/rogerclarkmelbourne/Arduino_STM32/tree/master/drivers/win/win_xp_legacy)
+
+**NOTE:** If you have installed the drivers and your module is not detected as a Maple device it most likely does not have a USB bootloader installed. Ready-made modules from Banggood **do not** come with a USB bootloader installed.  You will need to follow the procedure to upload using a USB-to-serial adapter one time before you can upload firmware using the USB port.
+
+### Jumper JP4IN1 drivers
+The driver for the Jumper JP4IN1 module, the Silicon Labs CP210x driver, can be downloaded from here: https://www.silabs.com/products/development-tools/software/usb-to-uart-bridge-vcp-drivers
+
+### Other USB-to-serial device drivers
+Other drivers may be needed if you are using an external USB-to-serial adapter. Consult the documentation for your adapter.
+
+Windows 10 includes drivers for many common serial devices, including many USB-to-serial adapters, so check Device Manager to see if your device is recognised.
+
+### Mac OS X
+Uploading via USB requires the [libusb library](https://libusb.info/) to be installed.  The easiest way to install the library is using the [Homebrew package manager for macOS](https://brew.sh/) by executing the two lines given below in a Terminal.
+
+Install Homebrew:
+
+    `/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"`
+
+Once Homebrew is installed, use it to install libusb:
+
+    `brew install libusb`
+
+### Linux
+Permissions must be configured to allow access to serial devices.
+1. If you haven't already done so, clone or download and unpack the Multiprocol source
+1. Open a Terminal and change to the directory where you have cloned or unzipped the Multiprotocol source
+1. Run the following commands:
+
+    ```
+    sudo cp -v BootLoaders/Boards/Linux/45-maple.rules /etc/udev/rules.d/45-maple.rules
+    sudo chown root:root /etc/udev/rules.d/45-maple.rules
+    sudo chmod 644 /etc/udev/rules.d/45-maple.rules
+    sudo udevadm control --reload-rules
+    sudo usermod -a -G plugdev $USER
+    sudo usermod -a -G dialout $USER
+    ```
+
 ## Compiling and Uploading
 Refer to the hardware-specific pages for information on compiling the firmware and uploading it to the multiprotocol module:

--- a/docs/Compiling_STM32.md
+++ b/docs/Compiling_STM32.md
@@ -1,26 +1,24 @@
-# Flashing, Compiling and Programming (STM32)
+# Compiling and Flashing (STM32)

-Multiprotocol firmware can be either flashed with a precompiled binary (Option-1) or compile/upload your customized firmware using the Arduino IDE (Option-2).
+Multiprotocol modules can be flashed with a precompiled firmware file (Option 1 and 2) or you can compile and upload your customized firmware using the Arduino IDE (Option 3).

 **These instructions are for the STM32 version of the Multiprotocol module.**  If you are Compling for the Arduino ATmega328p version of the Multiprotocol Module please go to the dedicated [ATmega328](Compiling.md) page.

 ## Index
 1. [Tools Required](#tools-required)
-1. [Option-1 Update firmware using precompiled binaries](#option-1-update-firmware-using-precompiled-binaries)
-1. [Option-2 Compiling and updating firmware](#option-2-compiling-and-updating-firmware)
+1. [Option 1 - Update firmware using precompiled binaries](#option-1---update-firmware-using-precompiled-binaries)
+1. [Option 2 - Flash from TX](#option-2---flash-from-tx)
+1. [Option 3 - Compiling and updating firmware](#option-3---compiling-and-updating-firmware)
   1. [Preparation](#preparation)
   1. [Install the Arduino IDE](#install-the-arduino-ide)
   1. [Download the Multiprotocol source and open the project](#download-the-multiprotocol-source-and-open-the-project)
   1. [Install the Multi 4-in-1 board](#install-the-multi-4-in-1-board)
   1. [Configure the Arduino IDE](#configure-the-arduino-ide)
-1. [Configure the firmware](#configure-the-firmware)
-1. [Verify the firmware](#verify-the-firmware)
-1. [Preparing to upload the firmware](#preparing-to-upload-the-firmware)
-   1. [Select an upload method](#select-an-upload-method)
-1. [Upload via Serial inc. Bootloader (FTDI)](#upload-via-serial-inc-bootloader-ftdi)
-1. [Flash from TX](#flash-from-tx)
-1. [Upload via USB](#upload-via-usb)
-   1. [Install the Maple USB Drivers](#install-the-maple-usb-drivers)
+   1. [Configure the firmware](#configure-the-firmware)
+   1. [Verify the firmware](#verify-the-firmware)
+   1. [Connect the module](#connect-the-module)
+   1. [USB Port](#usb-port)
+   1. [USB-to-Serial adapter](#usb-to-serial-adapter)
   1. [Upload the firmware](#upload-the-firmware)
 1. [Troubleshooting](#troubleshooting)

@@ -28,7 +26,7 @@ Multiprotocol firmware can be either flashed with a precompiled binary (Option-1

 Tools are only required if a multi module does not have a USB port, a working bootloader or an integrated FTDI adapter:
 * The latest iRangeX IRX4+ modules most likely already have the USB Bootloader flashed on it. You therefore don't need the FTDI adapter below and don't need to open your module to flash it.
-* The latest jumper modules have an integrated FTDI appearing as a CP2102 device on the computer. You therefore don't need the FTDI adapter below and don't need to open your module to flash it.
+* The latest Jumper modules have an integrated FTDI appearing as a CP2102 device on the computer. You therefore don't need the FTDI adapter below and don't need to open your module to flash it.
 * The Vantac MPM Lite module already has the USB Bootloader flashed on it. You therefore don't need the FTDI adapter below and don't need to open your module to flash it. **Modules' bootloader however might not be booting everytime depending on the radio, if this is the case you need to upgrade it.**

 You are still unsure if your module can be flashed without tools or opening it? Here is how to quickly check:
@@ -54,10 +52,10 @@ The 4-pin header needs to be soldered onto the board as indicated by the red rec

 **Note:** The Banggood STM32 module most likely already has the header pin in place.

-## Option-1 Update Firmware using Precompiled Binaries
+## 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).

-**STM32 Builds (file names beginning with 'Multi-STM_')
+**STM32 Builds (file names beginning with 'Multi-STM_')**
 -   All radio modules and protocols are included in all builds
 -   Files with TXFLASH in the name are built with a bootloader for flashing from a transmitter OR via the module's USB port (eg. Multi-STM_TXFLASH_INV-vX.X.X.XX.bin)
 -   Files with FTDI in the name are built without a bootloader for flashing using an FTDI adapter (eg. Multi-STM_FTDI_INV-vX.X.X.XX.bin)
@@ -69,16 +67,21 @@ If you don't need/want to customize the multi module firmware then you can use p
  <img src="https://github.com/benlye/flash-multi/raw/master/img/flash-multi.jpg">
 </p>

-After a succesful flash your Module is now updated to the newer version firmware using the most common options. To change specific configured options you would need to use Option-2, Compile and flash update using Arduino IDE. 
+After a succesful flash your Module is now updated to the newer version firmware using the most common options. To change specific configured options you would need to use [Option-3](#option-3---compiling-and-updating-firmware), Compile using Arduino IDE and your desired upload method. 
 
-# Option-2 Compiling and Updating Firmware
+## Option 2 - Flash from TX
+1. 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).
+2. If you are compiling the firmware yourself in the Arduino environment with [Option-3](#option-3---compiling-and-updating-firmware), do the following to export the binary:
+- Click **Sketch -> Export compiled Binary**, or press **Ctrl+Alt+S**
+- Locate the file named **multi-stm-x.x.x.x.bin** in the **Multiprotocol source folder** folder (x.x.x.x is the multi version)
+3. Follow the instructions [here](/docs/Flash_from_Tx.md) to upload the firmware using your radio

-## Preparation
-
-Multiprotocol firmware can be compiled and uploaded with your customized firmware using the Arduino IDE. The guide below will walk you through all the steps in many details, don't be afraid by the length it is in fact simple!
+## Option 3 - Compiling and Updating Firmware
+### Preparation
+Multiprotocol firmware can be compiled and flashed with your customized firmware using the Arduino IDE. The guide below will walk you through all the steps in many details, don't be afraid by the length it is in fact simple!

 ### Install the Arduino IDE
-1. Download and install the Arduino IDE. The currently supported Arduino version is 1.8.5, available for [Windows]( https://www.arduino.cc/download_handler.php?f=/arduino-1.8.5-windows.exe), [Mac OSX](https://www.arduino.cc/download_handler.php?f=/arduino-1.8.5-macosx.zip) and [Linux (64-bit)](https://www.arduino.cc/download_handler.php?f=/arduino-1.8.5-linux64.tar.xz)
+1. Download and install the Arduino IDE. The currently supported Arduino version is 1.8.9, available for [Windows]( https://www.arduino.cc/download_handler.php?f=/arduino-1.8.9-windows.exe), [Mac OSX](https://www.arduino.cc/download_handler.php?f=/arduino-1.8.9-macosx.zip) and [Linux (64-bit)](https://www.arduino.cc/download_handler.php?f=/arduino-1.8.9-linux64.tar.xz)
 1. It is recommended to upgrade Java to the [latest version](https://www.java.com/en/download/)

 ### Download the Multiprotocol source and open the project
@@ -87,24 +90,24 @@ Multiprotocol firmware can be compiled and uploaded with your customized firmwar
   1. Clone the project using Git or Github Desktop, then
 1. Double-click the **Multiprotocol.ino** file in the **Multiprotocol** folder to open the project in the Arduino IDE

-**Important note for Windows users:** You must download or unzip the Multiprotocol source in a folder which has no spaces in the path.  If you have spaces in your username **do not** use a sub-folder of your user directory.  This is due to a [bug in the Arduino IDE](https://github.com/arduino/arduino-builder/issues/316), caused by an [issue in Go](https://github.com/golang/go/issues/17149).
-
 ### Install the Multi 4-in-1 board
 1. Follow [these instructions](Arduino_IDE_Boards.md) to install the **Multi 4-in-1 STM32 Board** in the Arduino IDE

 ### Configure the Arduino IDE
 1. Under **Tools -> Board** select **Multi 4-in-1 (STM32FC103)**
-1. Under **Tools -> Upload method** select **Auto Detect (USB or Serial)** <- more details on this subject later on
-1. Under **Tools -> Programmer** select **stm32flash (FTDI)**
+1. Under **Tools -> Debug Option** select **None**
+
+### Configure the firmware
+Make any changes you require to the firmware.

-## Configure the firmware
 The STM32 module has more than enough flash space for all the available protocols so, unlike the Atmega328p-based module, it is not necessary to disable unused protocols.

 You can still disable protocols if you wish, and you may also enable or disable other optional Multiprotocol features.
-## Verify the firmware
+
+### Verify the firmware
 To check that the program will compile correctly and fit in the STM32 click **Sketch -> Verify/Compile**, or press **Ctrl+R**.

-If there are errors,  carefully read it, go to the line number indicated and correct your typo.
+If there are errors, carefully read it, go to the line number indicated and correct your typo.

 If there are no errors and you see output like this:
 ```
@@ -113,29 +116,16 @@ Global variables use 4064 bytes (19%) of dynamic memory, leaving 16416 bytes for
 ```
 You can proceed to the next step.

-## Preparing to upload the firmware
-If you have already burnt the bootloader, and are simply recompiling firmware to re-flash using your TX or USB cable, you can skip this step and go straight to [Flash from TX](#flash-from-tx) or [Upload via USB](#upload-via-usb).
+### Connect the module
+#### USB port
+Ensure that you [installed the necessary drivers](https://github.com/benlye/DIY-Multiprotocol-TX-Module/blob/doc-updates/docs/Arduino_IDE_Boards.md#install-device-drivers).

-STM modules, until now, do not come with a preloaded bootloader which makes the USB port unusable and discovered by a computer as unknown device. **For the first time use, you must use the upload method Upload via Serial inc. Bootloader (FTDI)** independently of what method you wish to use in future.
+If your Multiprotocol module has a USB port, connect it to the computer.  With the drivers installed your computer should detect the module as a COM port.  If the device appears correctly (check in **Device Manager**) you can proceed to the next step and [upload the firmware](#upload-the-firmware).  If not, you will need to flash your module one time using a USB-to-serial adapter (also known as an FTDI adapter).

-The latest Jumper 4-in-1 modules come with a USB port but it's in fact a built in FTDI appearing on the computer as a CP2102 serial device. You should use the method **Upload via Serial inc. Bootloader** instead of Upload via USB. 'Flash from TX' is supported once the bootloader is installed. 
+**Note:** Some modules require external power in order for the USB port to work.  If your module does not power on with USB power alone, install it in the transmitter and switch the transmitter on.  It is generally safe for the module to recieve power from both USB and the transmitter.

-### Select an Upload Method
-There are a total of five firmware upload methods to an STM32 module:
-* **Flash from TX** - uses the bootloader mode of radios running ersky9x or OpenTX to upload the firmware. The radio needs to run the latest bootloader with the Multi Flash app.
-* **Auto Detect (USB or Serial)** - Detects automatically if the upload method is USB or Serial. You need to configure the correct COM port in the IDE which is created when plugging the module.
-* **Upload via USB** - uses the USB upload method through the USB plug of the module. It requires the presence of a bootloader in the module.
-* **Upload via Serial inc. Bootloader (FTDI)** - uses the serial interface of the module via a USB-to-TTL adapter to install the bootloader and firmware.
-* **Upload via Serial (FTDI)** - uses the serial interface of the module via a USB-to-TTL adapter to install the firmware.
-
-You will most likely use only once on a brand new module the **Upload via Serial inc. Bootloader (FTDI)** method to load the bootloader+firmware. Any successive updates will be done using either **Auto Detect (USB or Serial)** or **Flash from TX** depending on your preference.
-
-1. Under **Tools -> Upload Method** select an upload method
-
-The rest of this process will vary depending on the upload method you selected.
-
-## Upload via Serial inc. Bootloader (FTDI)
-It is **strongly** recommended that you power your module from the transmitter when flashing it. This ensures that the module cannot be inadvertently supplied with 5V, which will damage the RF modules. This guide assumes that you will follow that advice, and instructs you to leave the V+ pin on the USB-to-TTL adapter disconnected. You may choose to ignore that advice at your own risk!
+#### USB-to-Serial adapter
+It is **strongly** recommended that you power your module from the transmitter when flashing it using a USB-to-serial adapater. This ensures that the module cannot be inadvertently supplied with 5V, which will damage the RF modules. This guide assumes that you will follow that advice, and instructs you to leave the V+ pin on the USB-to-TTL adapter disconnected. You may choose to ignore that advice at your own risk!

 The wiring for the USB-to-TTL adapter is:
 * USB-to-TTL TX pin <-> Module RX pin
@@ -161,151 +151,14 @@ In order to flash the bootloader the **BOOT0** jumper must be installed connecti
 | 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" /> |

-1. If on Linux, ensure you have permissions to access serial interfaces as described in [Install the Maple USB drivers](#install-the-maple-usb-drivers)
+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.
 1. Switch on the transmitter
-1. Verify that you have selected the upload method **Upload via Serial inc. Bootloader (FTDI)** under **Tools -> Upload Method**
-1. Verify that you have selected **stm32flash (FTDI)** as the programmer under **Tools -> Programmer**
-1. Verify that the USB-to-TTL adapter is correctly connected to your module and you have selected the correct port under **Tools -> Port**
-1. In the Arduino IDE click **Sketch -> Upload**, or press **Ctrl+U**
-
-Output will look similar to this:
-```
-C:\Users\blye\AppData\Local\Arduino15\packages\multi4in1\hardware\STM32F1\1.0.0/tools/win/serial_upload.bat COM4 0x0 C:\Users\blye\AppData\Local\Arduino15\packages\multi4in1\hardware\STM32F1\1.0.0/bootloaders/Multi4in1/StmMultiUSB.bin 
-stm32flash -v -g 0x0 -b 57600 -w C:\Users\blye\AppData\Local\Arduino15\packages\multi4in1\hardware\STM32F1\1.0.0\bootloaders\Multi4in1\StmMultiUSB.bin COM4 
-
-stm32flash 0.4
-
-http://stm32flash.googlecode.com/
-
-Using Parser : Raw BINARY
-Interface serial_w32: 57600 8E1
-Version      : 0x22
-Option 1     : 0x00
-Option 2     : 0x00
-Device ID    : 0x0410 (Medium-density)
- RAM        : 20KiB  (512b reserved by bootloader)
- Flash      : 128KiB (sector size: 4x1024)
- Option RAM : 16b
- System RAM : 2KiB
-Write to memory
-Erasing memory
-
-Wrote and verified address 0x08000100 (3.56%) 
-Wrote and verified address 0x08000200 (7.13%) 
-...
-Wrote and verified address 0x08001c00 (99.78%) 
-Wrote and verified address 0x08001c10 (100.00%) Done.
-
-Starting execution at address 0x08000000... done.
-```
-Assuming the process is successful:
-1. Power off the transmitter
-1. Remove the **BOOT0** jumper
-1. Disconnect the USB-to-TTL adapter
-1. Your module is ready to use, enjoy!!!
-
-## Flash from TX
-1. The MPM module must have a recent bootloader installed
-1. Click **Tools -> Upload method -> Flash from TX**
-1. Click **Sketch -> Export compiled Binary**, or press **Ctrl+Alt+S**
-1. Locate the file named **multi-stm-x.x.x.x.bin** in the **Multiprotocol source folder** folder (x.x.x.x is the multi version)
-1. Follow the instructions [here](/docs/Flash_from_Tx.md) to upload the firmware using your radio
-1. Once done your module is ready to be used
-
-## Upload via USB
-In order for the module to be correctly identified it is necessary and only once to do some operations based on your operating system.
-
-### Install the Maple USB drivers
-##### Windows 7 or newer:
-1. Open the folder where you unzipped or cloned the Multiprotocol project
-1. Browse to **\BootLoaders\Boards\Windows**
-1. Run **install-drivers.bat**
-1. Follow the prompts to install the two drivers
-
-##### Windows XP or older
-1. Download and install the legacy Windows XP drivers from [here](https://github.com/rogerclarkmelbourne/Arduino_STM32/tree/master/drivers/win/win_xp_legacy)
-
-**NOTE:** If you have installed the drivers and your module is not detected as a Maple device it most likely does not have a USB bootloader installed. Ready-made modules from Banggood **do not** come with a USB bootloader installed.  You will need to follow the procedure to [Burn a USB bootloader](#upload-via-serial-inc-bootloader-ftdi) before you can upload firmware.
-
-##### Mac OS X
-Uploading via USB requires the [libusb library](https://libusb.info/) to be installed.  The easiest way to install the library is using the [Homebrew package manager for macOS](https://brew.sh/) by executing the two lines given below in a Terminal.
-
-Install Homebrew:
-
-    /usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"
-
-Once Homebrew is installed, use it to install libusb:
-
-    brew install libusb
-
-##### Linux (64-bit)
-To execute any of the following commands you should use a Terminal (shell) with the current directory set to the location where you cloned or unpacked this project.
-
-You can do this by navigating to the project folder in the Files application then right clicking and selecting "Open in Terminal" from the menu that appears. This will open a Terminal where you will enter the commands indicated below.
-
-If you are using Ubuntu 16.04 LTS it is not necessary to download Maple USB drivers but your account must have permissions to communicate to the Maple USB system devices. To do this you must be in the group which can access USB devices and/or serial interfaces. This configuration must be done once after account creation/system install. You can do that by entering the following commands:
-
-    sudo usermod -a -G plugdev $USER
-    sudo usermod -a -G dialout $USER
-
-Any sudo operation requires administrator privileges and if your account is an administrator account (and it will be if you installed Ubuntu yourself) it will ask for your password.
-
-After entering these commands you must log out of Ubuntu completely and log back in. Simply closing the Terminal window and opening another will not work.
-
-The first command adds your user account to the group which can access connected USB devices. The second adds your account to the group which can access serial interfaces.
-
-The next steps will change your system's permissions rules so that users in the plugdev group can access attached USB devices.
-
-If necessary, open another Terminal window with the current directory set to the project directory as explained above. Then type the following commands into the Terminal:
-
-    sudo cp BootLoaders/Boards/Linux/45-maple.rules /etc/udev/rules.d/
-    sudo /etc/init.d/udev restart
-
-After adding yourself to the groups as above and installing and running the udev rules above your system will be configured so that your user account will always have access to serial and USB devices without requiring you run these steps again.

 ### Upload the firmware
-**Note:** Some modules require external power in order for the USB port to work.  If your module does not power on with USB power alone, install it in the transmitter and switch the transmitter on.  It is generally safe for the module to recieve power from both USB and the transmitter.
-
-1. Connect the USB cable to the Multiprotocol module
-1. Click **Tools -> Upload method -> Auto Detect (USB or Serial)**
-1. Select the correct COM port **Tools -> Port**, which should be labelled **COMx (Multi 4-in-1 (STM32F103CB))**.<p align="center"><img src="images/maple-serial-port-select.jpg"/></p>
 1. In the Arduino IDE click **Sketch -> Upload**, or press **Ctrl+U**

-**Note:** If the module appears as a **Maple DFU** for a module with only a bootloader, **Maple Serial** for a module with a bootloader and firmware then follow the same process by selecting any available COM port (you must select one, if you don't have one appearing plug any device that will create a com port (an Arduino board for example)).
-
-You should see output similar to this:
-```
-Sketch uses 68564 bytes (52%) of program storage space. Maximum is 131072 bytes.
-Global variables use 4064 bytes (19%) of dynamic memory, leaving 16416 bytes for local variables. Maximum is 20480 bytes.
-C:\Users\blye\AppData\Local\Arduino15\packages\multi4in1\hardware\STM32F1\1.0.0/tools/win/maple_upload.bat COM4 2 1EAF:0003 C:\Users\blye\AppData\Local\Temp\arduino_build_933551/Multiprotocol.ino.bin 
-maple_loader v0.1
-Resetting to bootloader via DTR pulse
-Reset via USB Serial Failed! Did you select the right serial port?
-Searching for DFU device [1EAF:0003]...
-Assuming the board is in perpetual bootloader mode and continuing to attempt dfu programming...
-
-Found it!
-
-Opening USB Device 0x1eaf:0x0003...
-Found Runtime: [0x1eaf:0x0003] devnum=1, cfg=0, intf=0, alt=2, name="STM32duino bootloader v1.0  Upload to Flash 0x8002000"
-Setting Configuration 1...
-Claiming USB DFU Interface...
-Setting Alternate Setting ...
-Determining device status: state = dfuIDLE, status = 0
-dfuIDLE, continuing
-Transfer Size = 0x0400
-bytes_per_hash=1371
-Starting download: [##################################################] finished!
-state(8) = dfuMANIFEST-WAIT-RESET, status(0) = No error condition is present
-Done!
-Resetting USB to switch back to runtime mode
-error resetting after download: usb_reset: could not reset device, win error: The system cannot find the file specified.
-```
-
-**Note:** The line `Reset via USB Serial Failed! Did you select the right serial port?` or a warning line stating that the device could not be reset is **not a problem**.
-
-## Troubleshooting
+# Troubleshooting
 You can report your problem using the [GitHub issue](https://github.com/midelic/DIY-Multiprotocol-TX-Module/issues) system or go to the [Main thread on RCGROUPS](http://www.rcgroups.com/forums/showthread.php?t=2165676) to ask your question.
 Please provide the following information:

--- a/docs/Flash_from_Tx.md
+++ b/docs/Flash_from_Tx.md
@@ -1,9 +1,9 @@
 # Flashing from the Transmitter

-For radios running ersky9x and OpenTX, there is an option to flash a precompiled firmware file to the multiprotocol module using the transmitter's Bootloader mode.
+For radios running erskyTx and OpenTX, there is an option to flash a precompiled firmware file to the multiprotocol module using the transmitter's Bootloader mode.

 ## Tools required
-* A compatible transmitter running an ersky9x bootloader v2.9 or newer. This is true for both OpenTX and ersky9x.
+* A compatible transmitter running an erskyTx bootloader v2.9 or newer. This is true for both OpenTX and erskyTx.
 * A precompiled multiprotocol firmware file (.hex for Atmega328p or .bin for STM32)
 * A **Flash from TX** bootloader installed on an Atmega328p or STM32 multiprotocol module
 * A means to get the firmware file onto the transmitter's SD card
@@ -18,11 +18,11 @@ For radios running ersky9x and OpenTX, there is an option to flash a precompiled
 1. If everything is correct you are ready to upgrade the Multimodule firmware

 ### Upgrade the bootloader and install app(s)
-1. Download the latest zip file of the [ersky9x firmware](https://openrcforums.com/forum/viewtopic.php?f=7&t=4676)
+1. Download the latest zip file of the [erskyTx firmware](https://openrcforums.com/forum/viewtopic.php?f=7&t=4676) or [this file for the T16](http://www.er9x.com/t16BootFlashMulti.zip).
 1. Extract the .bin file corresponding to your radio in your SD card `\FIRMWARE` directory
-1. Download the latest [Flash Multiprotocol Module app](http://www.er9x.com/Ersky9xapps.html) for your radio
+1. Download the latest [Flash Multiprotocol Module app](http://www.er9x.com/Ersky9xapps.html) for your radio. For the T16, it's in the previous file.
 1. Copy the .app file in a folder called `APPS` at the root of the SD card (if the directory does not exist create it)
-1. For ersky9x
+1. For erskyTx
   1. Power on the radio in `MAINTENANCE` mode while pushing both horizontals trims outwards (away from each others)
   1. Select `Update Bootloader`
   1. Select the ersky9x firmware matching your radio
--- a/docs/Troubleshooting.md
+++ b/docs/Troubleshooting.md
@@ -15,6 +15,7 @@
 - **_Fast blink(on=0.1s,off=0.1s)_**: bind in progress
 - **_Slow blink(on=0.5s,off=0.5s)_**: serial has been selected but no valid signal is being seen on the RX pin.
 - **_Slower blink(on=1s,off=1s)_**: PPM has been selected but no valid signal is being seen on the PPM pin.
+- **_Fast double blink(on=0.1s,off=0.1s,on=0.1s,off=0.5s)_**: serial debugging is enabled and is waiting for a serial connection
 - **_On_**: Module is in normal operation mode (transmitting control signals).

 ## Protocol selection
--- a/docs/images/Debug1.png
+++ b/docs/images/Debug1.png
--- a/docs/images/Serial_Monitor_1.png
+++ b/docs/images/Serial_Monitor_1.png
--- a/docs/images/Serial_Monitor_2.png
+++ b/docs/images/Serial_Monitor_2.png
Author	SHA1	Message	Date
pascallanger	e783ce5788	Failsafe modification The following protocols are supporting failsafe: FrSkyX, Devo, WK2x01, SFHSS, HISKY/HK310 and AFHDS2A In Serial mode failsafe is configured on the radio itself. In PPM mode and only after the module is up and fully operational, press the bind button for at least 5sec to send the current stick positions as failsafe to the RX.	2019-09-27 16:20:43 +02:00
pascallanger	18af4a0724	AVR modules: Fix KF606, GD00X and Potensic	2019-09-26 15:51:28 +02:00
pascallanger	7e6ec1dc8d	Update FrSkyX_Rx_cc2500.ino Remove compilation warnings for AVR	2019-09-26 15:50:38 +02:00
pascallanger	4fbe0859e0	Update comments	2019-09-25 19:10:55 +02:00
pascallanger	b89c23fe7c	PPM channel remapping	2019-09-23 18:13:25 +02:00
goebish	e038c49ae9	Protocol FrskyX D16 RX frequency auto-tune (#270 ) * Add autotune during bind * Fix data phase	2019-09-23 08:11:06 +02:00
Ben Lye	bed02c9384	Update .travis.yml (#269 )	2019-09-22 14:17:23 -04:00
pascallanger	96bc4f7cdf	Revert Fix FrskyX failsafe hold/no pulse inversion	2019-09-22 20:00:04 +02:00
pascallanger	6503469ddd	Bump multi board version to the latest	2019-09-22 17:29:43 +02:00
pascallanger	61a1c3742c	Fix FrskyX failsafe hold/no pulse inversion	2019-09-22 17:12:00 +02:00
pascallanger	1fb2a38bc1	Hitec additional telemetry	2019-09-22 17:11:23 +02:00
pascallanger	22a0d79315	FrskyX_RX documentation	2019-09-22 17:05:46 +02:00
MRC3742	0cc72772a3	Repair sub protocol column listing errors for two Protocol (#268 )	2019-09-19 20:13:13 +02:00
Pascal Langer	11f4e636e3	AFHDS2A telemetry fix Discard RX config packets	2019-09-19 10:51:24 +02:00
pascallanger	fef1a2e041	Update Advanced_Debug.md	2019-09-19 09:07:14 +02:00
pascallanger	41a9c8e013	Update Advanced_Debug.md	2019-09-19 08:59:40 +02:00
Pascal Langer	c1ad02b792	Create Debug1.png	2019-09-19 08:55:20 +02:00
Pascal Langer	ab2315c951	FrSkyX: few cosmetic and optimization changes	2019-09-18 11:05:46 +02:00
goebish	7948e33cbc	Fix start channel (#267 )	2019-09-18 08:48:04 +02:00
goebish	2be2dce584	Protocol FrSky D16 receiver (#266 ) * Add skeleton for FrSkyX receiver protocol * Binds & receives data packets * Store bind information * Fix compilation * Bypass LNA since intended usage implies tx & rx are close together * Bind channel has FS_AUTOCAL * Add freq fine tune & low power mode (disable lna) * Add TX ID check * Retry longer until first packet is catched * Fix chanskip for first packet * Fix defines * Fix bind * Send channels to TX * Fix RSSI reading * Add missing static keyword * Fix Validate.h * Fix compilation	2019-09-17 23:35:19 +02:00
Ben Lye	69bdfe3dba	Update package_multi_4in1_board_index.json	2019-09-17 20:36:24 +01:00
Pascal Langer	d73d163a58	Update Validate.h	2019-09-17 09:53:18 +02:00
Ben Lye	48a52ae5b2	Update Multiprotocol.ino (#265 )	2019-09-17 09:37:18 +02:00
Pascal Langer	078dc2ab17	AFHDS2A telemetry AA and AC	2019-09-14 16:34:19 +02:00
Pascal Langer	6f4522caa6	Revert "AFHDS2A telemetry AA and AC" This reverts commit `3c76ce9f39`.	2019-09-14 16:31:27 +02:00
Pascal Langer	3c76ce9f39	AFHDS2A telemetry AA and AC	2019-09-14 16:27:07 +02:00
goebish	8601149051	Fix scanner telemetry (#262 ) * Fix scanner telemetry * Take several samples per channel, keep maximum value	2019-09-14 16:07:49 +02:00
pascallanger	d7ef15d435	Update Compiling_STM32.md	2019-09-12 16:08:20 +02:00
pascallanger	27e3645b56	Update Compiling_STM32.md	2019-09-12 15:55:08 +02:00
pascallanger	95eb4e1a22	Update Compiling_STM32.md	2019-09-12 15:54:18 +02:00
pascallanger	32ea07bf5a	Update Compiling_STM32.md	2019-09-12 15:51:58 +02:00
pascallanger	06272575c5	Flash from TX	2019-09-12 15:50:12 +02:00
Pascal Langer	edd6432d4c	Update Validate.h	2019-09-11 15:26:35 +02:00
Pascal Langer	303c4615e9	Fix scanner compilation issue	2019-09-11 12:23:36 +02:00
Pascal Langer	7d327c1622	Scanner 2.4GHz Thanks to Goebish for this spectrum analyzer. It will work soon with the OpenTX 2.3 Spectrum Analyser tool.	2019-09-10 23:37:54 +02:00
Ben Lye	6a74b83f98	Update .travis.yml	2019-09-08 14:40:59 +01:00
Ben Lye	c601c2dd98	Update .travis.yml	2019-09-08 14:25:52 +01:00
Ben Lye	c27b60749f	Update Travis CI script (#257 ) * Use latest STM32 board options * Use latest Arduino IDE * Fix build functions to return an error if the build fails * Modify the files that get exported to releases	2019-09-08 13:33:26 +01:00
Ben Lye	b3cb286088	Update package_multi_4in1_board_index.json	2019-09-07 18:54:27 +01:00
Ben Lye	361903e8ec	Doc updates for new board package (#256 )	2019-09-07 18:23:08 +01:00
Ben Lye	d72c69242d	Update package_multi_4in1_board_index.json Add AVR board v1.0.8 and STM32 board v1.1.5.	2019-09-06 19:43:10 +01:00
Ben Lye	539819fa0c	Accomodate new Debug Option setting in Arduino IDE (#255 ) Thanks, that's perfect!	2019-09-06 14:05:57 +02:00
Ben Lye	d80c218744	Add timeout to serial debug (#253 ) * Wait 30s for serial debug instead of waiting forever * Delay of 50ms to allow FTDI debugger to connect at startup	2019-09-05 08:33:01 +02:00
pascallanger	0603d220a9	T16 Flash from TX	2019-09-04 17:39:47 +02:00
pascallanger	e13fe56f47	Include the Jumper T16	2019-09-04 17:38:00 +02:00
pascallanger	acd7694485	Update Protocols_Details.md	2019-09-02 19:23:15 +02:00
pascallanger	7f50edacc8	Update Protocols_Details.md	2019-09-02 19:07:48 +02:00
pascallanger	5a4906c5b5	Update Protocols_Details.md	2019-09-02 19:06:34 +02:00
Pascal Langer	4e906757b9	XN297Dump fix enhanced unscramble mode	2019-08-24 22:39:27 +02:00
Pascal Langer	1f0b21e351	Fix GW008 protocol	2019-08-24 22:14:18 +02:00
Pascal Langer	2f3ea323c7	CHECK_FOR_BOOTLOADER now enabled by default in _config.h	2019-08-24 21:50:36 +02:00
Pascal Langer	d4e77c6499	XN297Dump: added enhanced packet mode	2019-08-24 21:37:26 +02:00
pascallanger	ffc56b049d	Update Advanced_Debug.md	2019-08-20 14:07:38 +02:00
pascallanger	ddac89d732	Update Advanced_Debug.md	2019-08-20 14:06:01 +02:00
Pascal Langer	fecf2805c7	WIP: Advanced topics	2019-08-20 14:01:56 +02:00
Pascal Langer	4dcc88ba32	Serial debug documentation	2019-08-18 18:44:36 +02:00
Pascal Langer	084308d8a4	Update Multi.txt	2019-08-18 17:08:27 +02:00