What will cause dma interrupt can not trigger in #S32Kxx

[eeedward267]

Hi,

I met an issue, peripherals interrupt can not trigger. I debug and checked the registers found interrupt is enable and is in pending status, no hard fault detected. And I saw BasePri is 0x0. So I want to know why peripherals  interrupt can not trigger any more, just system tick can trigger.

[davidtosenovjan]

Which specific device is this question related to?

[eeedward267]

Hi, @davidtosenovjan :

The device is S32K148, and when problem happened, all interrupt can not enter, only system tick interrupt can enter, and at this time, saw NVIC(pending) and BasePri(0), all in normal status, so I want to know which scenario will cause this problem, exclusive area, resource or other things?

[davidtosenovjan]

Could you share the picture with better quality? Ideally as .png or other lossless format, in the current attachment I see no information as it is too blurred.

[eeedward267]

Hi, @davidtosenovjan :

Currently from my side, seems can not upload so many pictures. I will try to upload again.

[eeedward267]

[eeedward267]

Hi, @davidtosenovjan :

Please refer to picctures above, from these pictures, you can see i set 3 breakpoints, DMA7 and CAN mailbox0 can not enter, at that time, nvic is in pending status, basepri is 0, and system tick can enter normally.