Working with the STM32H735 Discovery

[thestumbler]

I've been happily working with Nucleo H723 and a custom H735 boards for a month now. This weekend just for fun, I decided to try out this H735 Discovery board which I mistakenly got before I realized how big and what an overkill it was.

It worked at first as expected. Then when I switched to another computer it started acting strange. Like I could program it once after erasure but not again, and the program I loaded quit working. Went back to the first computer, no change. I can reflash the ST demo file, and while that gives a few errors, the demo code runs.

I see a lot of people online have similar issues on the H735 chip with flashing and debugging. And there are several fixes aimed at making this play nicer with OpenOCD.

Maybe I need to apply some fixes, but I'm confused ... why do I only see these problems in the H735 Discovery board and not other H735-based designs?

To the best of my knowledge I do have the BSP files set up correctly and am using the proper external oscillator settings and frequencies. That pretty much has to be true, because I did use this Discovery board for an hour so running and testing a program. It only went haywire when I moved it to another computer (also a Mac, the same configuration or slightly newer)