opentx-dev

# build tools & deps
brew tap PX4/homebrew-px4 && brew update  # required for gcc-arm-none-eabi
brew install gcc-arm-none-eabi-49 cmake dfu-util
pip install pillow
open /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg  # or else you get a clang cant fine inttypes.h error while compiling lua shit

# clone and build
git clone --recursive -b 2.3 https://github.com/opentx/opentx
cd opentx
mkdir build
cd build
cmake -DPCB=X9LITE -DLUA=YES -DDISABLE_COMPANION=YES -DDEBUG=YES ..
#make help
make firmware

# turn off your controller and plug in the usb micro cable. Will show up as a DFU device.
make flash  # uses dfu-util
# remote should turn one when done with flashing. Turn off remove and repeat command to compile/flash again