in gpiote handler,call xEventGroupSetBitsFromISR will cause hardfault

[great-master]

my project is freertos+nrf52832 based the templete in SDK; A sensor pin is connect to P0.17, and I configure it low to high level trigger interrupt.In the handler I will call xEventGroupSetBitsFromISR to notify task, but when call this function, it will step into hardfault;The hardfault error information as the below:

hardfault: HARD FAULT at 0x000076EC<error> hardfault:   
R0:  0x7325203A  R1:  0x00004A1C  
R2:  0x65646F63  R3:  0x7265202C
<error> hardfault:   
R12: 0x00000003  LR:  0x0000859D  
PSR: 0x01000016<error> 
hardfault: Cause: Data bus error (return address in the stack frame is not related to the instruction that caused the error).

If in the handler, I call xEventGroupSetBits,the program can running normal.

So, what's wrong with it?Does GPIOTE handler is not ISR?

[Susheel Nuguru]

I think I have seen this error before in the earlier SDK where there was a bug related to the tick handling. Which SDK version are you using? I can give it a try to reproduce this hardfault with your project once you let me know the SDK version.

[great-master]

nRF5_SDK_17.0.2_d674dde

[Susheel Nuguru]

This SDK should not have that bug i was mentioning before. So it is not related to the suspect i have in mind.

I will test your project soon and come back to you.

[great-master]

thank you very much , wait your answer!

[Susheel Nuguru]

Sorry,  I did not manage to finish looking at this today.

I will get more insights and reply to you tomorrow.