Black Magic Probe & Arduino Due can't debug or upload

PlatformIO IDE
2

Sadly I don’t have a BMP or an Arduino Due so I can only offer very generic advice:

  • on Windows, if a COM port higher than 9 is to be refernenced, it must be done so with a special “\.\COMx” syntax as e.g. seen in How to debug on Arduino mega 2560 - #2 by maxgerhardt. Adapt debug_port etc. accordingly if that is your case
  • is the firmware on the BMP up-to-date? Which version is it, for reference?
  • Are you able to connect to and flash the chip manually with GDB commands or some guide explaining how to use the BMP on the command line? What exact GDB commands are used to achieve that?