Getting hardfaults when attempting to modify flash in the second bank

[MYoungIMB]

Split from this post.

 

Hi @massimogPVS ,

 

Please let me check and confirm whether your assumption about missing updates in RM0454 compared to RM0444 is correct.

I have submitted an internal ticket on this topic: 227689 (this is an internal tracking number and is not accessible or usable by customers).

-Amel

Hello,

I am also using STM32G0B0 and running into hardfaults when attempting to modify flash in the second bank. Can ST please provide an update?

[Andrew Neil]

 I am also using STM32G0B0 and running into hardfaults 

 

How to debug Cortex-M Hard Faults

[Saket_Om]

Hello ​@MYoungIMB 

If an interrupt fire while flash is busy, the CPU may try to fetch ISR code from flash and fault.

For debugging, try:

​
__disable_irq();

/* flash erase/program sequence */

__enable_irq();

​

If hardfaults disappear, the root cause is almost certainly interrupt/code-fetch related.