S32KのトピックRe: How to check pending interrupts

How to check pending interrupts

Sylvia_jiang — Thu, 30 Mar 2023 07:16:28 GMT

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

Re: How to check pending interrupts

danielmartynek — Thu, 30 Mar 2023 08:48:59 GMT

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

Re: How to check pending interrupts

Sylvia_jiang — Fri, 31 Mar 2023 03:18:12 GMT

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

Re: How to check pending interrupts

danielmartynek — Fri, 31 Mar 2023 07:47:34 GMT

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

Re: How to check pending interrupts

Sylvia_jiang — Fri, 31 Mar 2023 08:48:52 GMT

Hi Daniel,

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

Re: How to check pending interrupts

danielmartynek — Fri, 31 Mar 2023 10:19:36 GMT

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

Re: How to check pending interrupts

Sylvia_jiang — Mon, 03 Apr 2023 05:59:35 GMT

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?

Re: How to check pending interrupts

danielmartynek — Mon, 03 Apr 2023 07:50:19 GMT

Hello @Sylvia_jiang,

That is really application-dependent.

The code you posted clears pending interrupts.

BR, Daniel