After many months, I wanted to set up the B-G431B-ESC1 again and check why I had failed in the past now that I know SimpleFOC better.
PIO_FRAMEWORK_ARDUINO_ENABLE_CDC is mentioned on many example of platformio.ini, specially in the first post of the beginner’s guide.
But it shouldn’t be used because it’s using one of the PWM signal pin as USB dataline.
Luckily I came across this post 