SDRAM test generating “address bus overlap!” error

Hardware Portenta Portenta H7
1

Hi,

What does this mean? It started after I cribbed some MCU config from the Arduino RPC library and (presumably) applied it in the wrong context.

The problem persists across reboot. Does anyone have any pointers - no pun intended :), eg what this problem means, what MCU state persists across boots, what state might cause this problem, how to dump out the relevant state or other sage wisdom?

Kind regards

Andy

2

I do not have a clue as there is no information given. But if I were to take a SWAG it sounds like two different memory sections are decoding concurrently, possibly do to a hardware failure such as a shorted or open trace.

3

Thanks. Do you know if there’s part of the MMU config that survives reboots?

4

Sorry I do not have a clue. MMU (Memory Management Unit) are hardware dependent on the processor and the system implementation. I do not know what you have so I cannot give you a good answer.

5

It’s a Portenta H7 system so it’s an STM32H747XI