is this the right board? so how could I do the unit test of this board? same asF401RE? Thanks for you help.

Somewhere in this channel I think I posted a tarball of some code I wrote to do a fast calibration. However, I'll post here the Nucleo part of it. I haven't done anything particularly complicated on the Nucleo side, like implementing a UART, but you should be able to get a general understanding of how to program the Nucleo side of a testbench. The main thing is to run it in micropython, import the routines from

nucleo_api.py

, and make calls to the

Dio

class to set or read the value of specific pins. All the user project GPIO pins are named

IO_0

to

IO_37

.