S32KのトピックRTC Interrupt not working after VLPS->RUN mode transition

RTC Interrupt not working after VLPS->RUN mode transition

董超 — Mon, 29 Mar 2021 16:26:01 GMT

Hi, s32k transmit from RUN mode to VLPS mode normally, then RTC alarm interrupt request wakeup MCU from VLPS mode to RUN mode, but RTC alarm interrupt not working after VLPS to RUN mode transition.please answer , thanks!

Re: RTC Interrupt not working after VLPS->RUN mode transition

Robin_Shen — Wed, 31 Mar 2021 03:50:22 GMT

Hi 董超,

Please try to write TAR clears the SR[TAF] Time Alarm Flag in alarmISR.

Best Regards,
Robin
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Re: RTC Interrupt not working after VLPS->RUN mode transition

董超 — Wed, 31 Mar 2021 05:11:28 GMT

Hi Robin：

Thanks for your reply，I write TAR clears the SR[TAF] Time Alarm Flag in Interrupt service function, I used RTC alarm repetition function to periodically wake up MCU when MCU transmits RUN -> VLPS -> RUN, i want to know wether RTC alarm interrupt trigger AWIC which is used to wakeup MCU or trigger NVIC executes interrupt service function at the same time？Look forward to your reply ！！！

Re: RTC Interrupt not working after VLPS->RUN mode transition

Robin_Shen — Wed, 31 Mar 2021 08:51:32 GMT

RTC alarm interrupt trigger AWIC , it will wakeup MCU. After MCU is wakeup, it will run into RTC alarm interrupt.

Maybe you can refer the Example S32K144 RTC VLPS

Re: RTC Interrupt not working after VLPS->RUN mode transition

董超 — Wed, 31 Mar 2021 09:42:46 GMT

Hi Robin：

I will try again with the example you provided, thanks !

Re: RTC Interrupt not working after VLPS->RUN mode transition

董超 — Wed, 31 Mar 2021 17:42:37 GMT

Hi Robin：

The RTC alarm interrupt triggers AWIC wakeup MCU, then trigger NVIC to execute interrupt service function, at this time, MCU is in run mode, but RTC interrupt is always suspended, can you help me？