Dear Bay,
yes, this is correct. Unfortunately there is not a bare metal example for the PCF2131.
I apologize for inconvenience.
With Best Regards,
Jozef
Dear Bay,
unfortunately there is no a bare metal example for the PCF2131, but please refer to the PCF2131-ARD, which can be used with one of our MCU boards, and a binary firmware.
With Best Regards,
Jozef