STM32H745 CPU core reset

[FLamb]

Hello,

I am working with the STM32H745BI controller and would like to ask if there is a way to reset one CPU by the other CPU?

So in my special case, I would like to have the M7 start up and check if the M4 FIrmware is correct. I would like to STOP & RESET the M4 core, check the content of it's flash and eventually change it. When everything is finished I would like to release the M4 again.

Unfortunately I don't find any Core reset commands suitable for this purpose in the reference manual.

Best regards,

Florian

[Bouraoui Chemli]

Hi @FLamb​ 

You can try to gate CM4 boot, until the check operation is done, then release it. Additional resets can be managed by firmware, sending a command to CM4, asking to re-run the application.

Bouraoui