from system on to system off

[UBAN]

I am using the nRF5_SDK_11.0.0.

I want to state of the system off sleep after entering system on sleep.

For example, from the state of system on sleep, it becomes system off sleep after 5 seconds.

However, it did not escape from the state of system on sleep with the __SEV();__WFE(); __WFE();.

Could you give me some advice? main.c

[UBAN]

I tried to use the RTC. The following is the code.

void rtc_config1(void)

{

  NRF_RTC1->TASKS_STOP = 1;	// Stop timer

  NRF_RTC1->PRESCALER = 4;	// 1us resolution

  NRF_RTC1->TASKS_CLEAR = 1; // Clear timer

  NRF_RTC1->CC[1] = TRIGGER_INTERVAL1 * 5000; 

  NRF_RTC1->INTENSET = RTC_INTENSET_COMPARE1_Enabled << RTC_INTENSET_COMPARE1_Pos; 

  //attachInterrupt(RTC1_IRQn, RTC1_Interrupt);    // also used in variant.cpp to configure the RTC1 

  NVIC_EnableIRQ(RTC1_IRQn);

NRF_RTC1->TASKS_START = 1;	// Start TIMER

}

void RTC1_IRQHandler(void)

{

  if (NRF_RTC1->EVENTS_COMPARE[1] != 0)

  {

NRF_POWER->SYSTEMOFF = 1;

NRF_RTC1->EVENTS_COMPARE[1] = 0;
		
  }

}

However, interruption is not performed. Could you give me some advice?