CMU interrupt in s32k3xx

[jhuang1]

Hi, I'm adding CMU to my project aim to achive the asil-b level. The chip on my board is s32k312. I found CMU0_IRQ~ CMU2_IRQ in the interrupt map, but I havn't found the interrupt source of the 3 interrupts, do they have any relationship with FCCU?

[petervlna · Accepted solution]

Hello,

I havn't found the interrupt source of the 3 interrupts, do they have any relationship with FCCU?

No, I do not see FCCU faults related to CMU:

They are related to CMU module dirrectly.

I never tested it, but I expect once CMU_0 interrupt is enabled and latched in Status Register (SR) of that CMU module interrupt is called.

Since there is only one interrupt from these signals, you will read the Status Register (SR) of that CMU to find the root cause of that interrupt.

best regards,

Peter

Peter