CTPC=yes) to your make argument, like this:
rules.mk, which will accomplish the same thing.
CONVERT_TO_PROTON_Cflag that you can use in your code with
#ifdefs, like this:
PORTB/DDRB, etc not being defined, so you'll need to convert the keyboard's code to use the GPIO Controls that will work for both ARM and AVR. This shouldn't affect the AVR builds at all.
CTPC=yes, you need to change the
config.hto the stm32 equivalents.
D5and a TX LED on
A4is shared with the speaker.
A5is shared with the speaker.
A14are used for hardware debugging (SWD). You can also use them for GPIO, but should use them last.