Hello, while implementing a hard fault handler for my embedded device, I looked up the documentation from here: [image] Debugging and diagnosing hard faults on ARM Cortex-M CPUs Debugging hard fault exceptions on ARM Cortex-M3 and ARM Cortex-M4 microcontrollers …

Great you got it working! Since you don’t need handler2_address_const at all, you can probably use the simpler assembly: B prvGetRegistersFromStack Instead of ldr r2, =prvGetRegistersFromStack bx r2

Debugging a ARM Cortex-M Hard Fault

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Pilot May 26, 2020, 10:34am 6

I don’t use IAR because I’ve never been a fan of their UI, but this has been discussed before. Perhaps this will be enough to help you.