gomaomao/DIY-Multiprotocol-TX-Module
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Arduino 1.6.10 and extra optimization

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README.md
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@ -316,16 +316,17 @@ If you have the Banggood ready to use board you can 3D print this case (details
###Toolchain
Multiprotocol source can be compiled using the Arduino IDE.
The currently supported Arduino version is [1.6.9](http://arduino.cc/download_handler.php?f=/arduino-1.6.9-windows.exe).
The currently supported Arduino version is [1.6.10](https://www.arduino.cc/download_handler.php?f=/arduino-1.6.10-windows.exe).
Download the [zip file](https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/archive/master.zip) of this repository, unzip it in a folder, navigate to the Multiprotocol directory and then click on Multiprotocol.ino. The Arduino environment will appear and the Multiprotocol project will be loaded.
[_Config.h file](https://github.com/pascallanger/DIY-Multiprotocol-TX-Module/blob/master/Multiprotocol/_Config.h) must be modified to select which protocols will be available, change protocols/sub_protocols/settings associated with dial for PPM input, different TX channel orders and timing, Telemetry or not, ...
This is mandatory since all protocols will not fit in the ATmega328. You need to pick and choose what you want.
Notes:
- Make sure to select "Arduino Pro or Pro Mini, ATmega328 (5V,16MHz)" before compiling.
- Compilation of the code posted here works. So if it doesn't for you this is a problem with your setup, please double check everything before asking.
- If you want to reduce the code size even further, you can modify the file platform.txt located in "C:\Program Files (x86)\Arduino\hardware\arduino\avr". Set the line "compiler.c.elf.extra_flags=" to "compiler.c.elf.extra_flags=-Wl,--relax".
###Upload the code using ISP (In System Programming)
It is recommended to use an external programmer like [USBASP](http://www.banggood.com/USBASP-USBISP-3_3-5V-AVR-Downloader-Programmer-With-ATMEGA8-ATMEGA128-p-934425.html) to upload the code in the Atmega328. The programmer should be set to 3.3V or nothing to not supply any over voltage to the multimodule and avoid any damages.