STM32F446 and FMC stops working

[Kuikui]

Posted on July 04, 2017 at 09:34

Hi,

I have an STM32F446 + external PSRAM.

Everything's working fine, but it seems that I have a bug in my software that sometimes (hard to reproduce) breaks the connection between the STM32 and PSRAM.

When it is the case, I cannot access the PSRAM anymore, and trying to do so with the debugger says 'Error, CPU cannot read ...'

So I would say that the FMC stopped working.

Is there any 'error' bit or 'fault bit' somewhere that could help me finding the reason ?

Any easy way to restart FMC ?

Thanks.

Best regards,

Vincent.

#stm32f4-fmc