How to check pending interrupts

[Sylvia_jiang]

Hi Nxp Community,

        I am working on Lpspi+eDMA/PIT/CAN/EEPROM modules on S32K3. It is necessary to check if interrupts are serviced. I don't know Which registers indicate pending interrupts. Is there any solution?

Looking forward to your reply.

BR,

Sylvia

[danielmartynek]

Hi Sylvia,

If there is pending interrupt, the corresponding NVIC_ISPRn and NVIC_ICPRn bit is set.

For more information about NVIC, please refer to ARM®v7-M Architecture Reference Manual.

The S32K3xx NVIC interrupt mapping is specified in the S32K3xx_interrupt_map.xlsx file that is attached to the RM.

Regards,

Daniel

[Sylvia_jiang]

Hi Daniel

       Thank for your prompt reply. I am studying on S32K3XXRM.pdf, Rev.4, 04/2022 which doesn't provide any detail about S32_NVIC ICPR. Could you send me S32K3xx_interrupt_map.xlsx?

BR,

Sylvia

[danielmartynek]

Hi Sylvia,

Yes, the S32K3xx RM does not provide details about the NVIC.

Refer to the ARMv7-M Architecture Reference Manual

https://developer.arm.com/documentation/ddi0403/latest/

The excel file is attached to the RM.

BR, Daniel

[Sylvia_jiang]

Hi Daniel,

            ARMv7-M Architecture Reference Manual.pdf has been downloaded successfully. But attachments are null.

[danielmartynek]

I'm sorry, the excel is attached to the S32K3xx RM because this is vendor specific unlike the description of the registers that can be found in the ARM documentation.

Regards,

Daniel

[Sylvia_jiang]

Hi Daniel

            Thank for your sending me map file and I have downloaded it. I try to use IntCtrl_Ip_GetPending api that is defined in IntCtrl_lp.c to check pending interrupts and use IntCtrl_Ip_ClearPending to clear pending interrupts as below. Is it correct action? Is there any matters I need to pay attention to?

[danielmartynek · Accepted solution]

Hello @Sylvia_jiang,

That is really application-dependent.

The code you posted clears pending interrupts.

BR, Daniel