RE: low power delay ms

user15146 — Wed, 15 Jun 2022 14:40:33 GMT

Hi,

Try adding

// Enable EVENTS_COMPARE[0] generation
NRF_RTC1->EVTENSET = RTC_EVTENSET_COMPARE0_Enabled << RTC_EVTENSET_COMPARE0_Pos;

Might also want to add a IRQ handler.

// IRQ handler
void RTC1_IRQHandler(void)
{
  volatile uint32_t dummy;
  if (NRF_RTC0->EVENTS_COMPARE[0] == 1)
  {
    NRF_RTC0->EVENTS_COMPARE[0] = 0;

    
    // Read back event register so ensure we have cleared it before exiting IRQ handler.
    dummy = NRF_RTC0->EVENTS_COMPARE[0];
    dummy;
  }
}

PS: I recommended using the nrfx driver.