documentation porting to new MCU, pins.csv et al

[niallp]

I've successfully used the existing port for the NUCLEO_H723ZG and now have a custom board with the stm32h725ig, pretty much identical processors (SMPS controller vs. LDO and a few more pins for GPIO) but can't figure out what changes are necessary in the mpconfig.h and pins.csv to get it to compile. Even after cutting down to a minimal example (just I2C and SPI) it eventually dies with 'pin_A5' undeclared or similar.

Is there any documentation with more details on the porting process ? Other files I should be looking at ? Google searches and reading the generation scripts isn't getting me very far ... :-/

[robert-hh]

Did you clean the build directory between build attempts?

[niallp]

I hadn't but same errors after a clean.