Problem wakeup LLWU RTC

danielecortella — Mon, 02 Nov 2020 13:40:09 GMT

Hello i have a problem to wakeup the device with the RTC. I put this in VLLS1 with this command

	POWER_SYS_SetWakeupPin(kPowerManagerWakeupPin14, kLlwuExternalPinRisingEdge, &PLUVIOMETRO_GPIO_InpConfig0[0].config);
	POWER_SYS_SetWakeupModule(kPowerManagerWakeupModule5, TRUE);

#ifdef DEBUG

debug_printf("GOING IN LOW POWER\r\n");

#endif

	error = CLOCK_SYS_UpdateConfiguration(2, kClockManagerPolicyAgreement);
	i = CLOCK_SYS_GetCoreClockFreq();
	POWER_SYS_SetMode(2, kPowerManagerPolicyAgreement);

where the POWER_SYS_SetMode(2, kPowerManagerPolicyAgreement); set the VLLS1

and the llwu interrupt is written as is:

void PWR_Man_llwuIRQHandler(void)
{
  POWER_SYS_SetMode(0, kPowerManagerPolicyAgreement);
  CLOCK_SYS_UpdateConfiguration(0, kClockManagerPolicyAgreement);
  if(POWER_SYS_GetWakeupPinFlag(kLlwuWakeupPin14)){
  POWER_SYS_ClearWakeupPinFlag(kLlwuWakeupPin14);
  flag_pioggia = true;
  impulsi_pioggia++;
  }
  if(POWER_SYS_GetWakeupModuleFlag(kLlwuWakeupModule5)){
  NVIC_ClearPendingIRQ(RTC_IRQn);
  RTC_DRV_GetDatetime(RTCTimer_IDX, &DataTime);
  if(!(DataTime.minute % 15)){
  flag_transmit = TRUE;
  flag_newdata = TRUE;
  }else{
  flag_newdata = TRUE;
  }
  }
  PMC_REGSC = PMC_REGSC_ACKISO(1);
  //NVIC_SystemReset();
}

with the Pin14 i don't have problem to wake-up before the RTC allarm was execute but with the RTC it crash and i can't wake-up the device. I don't understand why....

Thanks

Re: Problem wakeup LLWU RTC

jeremyzhou — Wed, 22 Jun 2016 01:22:30 GMT

Hi Daniele,

Thank you for your interest in NXP Semiconductor products and the opportunity to serve you.

I was wondering if you can tell what the chip you use, then I can find some sample code for you to refer to.
Have a great day,
Ping

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