Arduino for STM32

Well, I worked it out in the end over on Stack Exchange: https://arduino.stackexchange.com/quest ... -gpio-pins

Hi All,

I've been using STM32s professionally and personally for a while. I am a mostly self-taught electronics and software engineer by trade.

I am currently working on an open-source automotive distribution module using an STM32F407ZET6, based on my own design.

Got an SD card head-scratcher I'm ...