Hard fault

[Steri]

Hi,

I'm working on a project using a custom pcb with a 52832 chip. It has worked good for several months, but I got a Hard Fault during flashing today. Flashed it 3 times before doing a "erase all" in SEGGER. Next time I flashed it, it fails to run because of the hard fault. How do I proceed my troubleshooting to solve this?

Results from debug terminal:

Thanks,

Arild

[Vidar Berg]

Hi Arild, 

I see you have already included the hardfault handling library, which is a good start. The log indicates that the fault occurred at address 0x2a912 (is unaligned) and that this happened while being inside the PendSV_IRQn interrupt.  Have you tried to repeat this to see if it always triggered in this interrupt context (ie last byte of PSR==0xe)? Also, do you have an RTOS that uses the PendSV_IRQn, or is it something else?

Best regards,

Vidar

[Steri]

I tried again today, but now it says that the fault occurs at 0x2A8E2. Yes, it seems like the last bit of the PSR is always 0xE. The system is running freeRTOS.

I noticed that some of the prints from nrfx_ppi is cut and it is only printing some of the last characters.