Hi,
I recently managed to make some progress building micropython for a STM32 development board (NUCLEO-F767ZI) using Windows 10
I think the usual build process is setup for Linix
so I had to make a couple of tweaks to the source to get it to work (unless there's some other way I don't know about)
I put the details over here
* https://github.com/grbd/HAccessV3.Code/ ... /Readme.md
This includes installing
* MSYS2 under windows
* The ARM gcc toolchain
* python 2.7