Non-Maskable Interrupt S32K146

[hamid_abrishami]

Hi every one! I used S32k146 with LQFP 144. and I connect a safety function pin to PTD3 and use ( Non-Maskable Interrupt) option but it make a conflict in my software routine. CAN I change this interrupt priority. and use this as a normal interrupt. 

[hamid_abrishami]

yes, I config the PTD3 and interrupt function (no NMI function) 

[Robin_Shen · Accepted solution]

Hi

This is the introduction to NMI in the Cortex-M4 Devices Generic User Guide:
A Non Maskable Interrupt (NMI) can be signalled by a peripheral or triggered by software. This is the highest priority exception other than reset. It is permanently enabled and has a fixed priority of -2. NMIs cannot be:
• masked or prevented from activation by any other exception
• preempted by any exception other than Reset.

Have you considered configuring this pin as PTD3 to enable the PORTD interrupt and configure its priority?

Best Regards,
Robin
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