IAR memory view for stm32N6 PSRAM

GanZ · ‎2026-03-25

I am not able to view stm32N6 PSRAM @ 0x90000000 with IAR Memory view, it only shows --. And after I tried to access 0x90000000, the debugger seemed to hang up.

I tried with STM32N6570-DK XPI_PSRAM_MemoryMapped project. I set a breakpoint at line 197 -- if (errorBuffer == 0) after it read/wrote PSRAM successfully. When it stopped at the breakpoint, I opened the memory view to check memory @0x90000000. It failed.

If I did the similar with stm32CubeIDE, it worked fine.

Any idea why the IAR was not working?

Andrew Neil · ‎2026-03-26

You should be asking IAR this question - it's their product !

https://www.iar.com/support

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.