Files
openpilot/panda/board
Comma Device b061d88cfa panda: add GM ignition-over-CAN detection on bus 2 (SystemPowerMode 0x1F1)
FrogPilot handles the GM SystemPowerMode message on both bus 0 and bus 2
(SDGM cars send it on bus 2). C3XL-dev only checked bus 0, so GM cars with
0x1F1 on bus 2 never set ignition_can and the device would not auto power-on.
Mirror FrogPilot: check 0x1F1 on bus 2 as well, keep other exceptions bus-0 only.
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Programming

./flash.py        # flash application
./recover.py      # flash bootstub

Debugging

To print out the serial console from the STM32, run tests/debug_console.py

Troubleshooting

If your panda will not flash and green LED is on, use recover.py. If panda is blinking fast with green LED, use flash.py.

Otherwise if LED is off and panda can't be seen with lsusb command, use panda paw to go into DFU mode.

If your device has an internal panda and none of the above works, try running ../scripts/reflash_internal_panda.py.