Hello,
Micro-Controller platform: STM32L0x1
Environment: Bare-Metal (No OS)
Brief description of the problem:
From interrupt context, we are trying to copy information received to EEPROM. Soon after entering into this routine, we it hard fault.
I started to debug according to the information provided here,
https://community.arm.com/developer/ip-products/system/f/embedded-forum/3257/debugging-a-cortex-m0-hard-fault
But still can't exactly figure out the reason. In fact just to verify, even if we don't write to EEPROM the program still crashed. I have attached register information here.
I suspect it could be something related to stack corruption but unable to prove my theory. Any direction to solve this mystery will be greatly appreciated.
Thank you.
42Bastian Schick : I didn't set PSP value (not sure how to do it either). PSP value was always set to -4 while I was debugging the code (step through instructions). I'm not sure how to modify the value of PSP.