Can device wake up from system off state using edge signal (either rising edge or falling edge)?

[liu_zhixiang]

I use nrf52832 board, S132,SDK14.2 . I refer to some projects and nrf52 datasheet that indicate to use pin sensing mechanism(level trigger) to wake up device from system off state. Does it mean that level trigger can wake up device? Can I use edge trigger to wake up it?

[liu_zhixiang]

The datasheet says that use the DETECT signal to exit from System OFF. The DETECT signal will go high immediately if the sense condition configured in the PIN_CNF registers is met when the sense mechanism is enabled.  I think exiting from System OFF is level trigger if sense condition is configured low ,then button pushed to wake up device. So can I use edge trigger to wake up the nrf52 board?

[Jared]

Hi,

The nRF52832 supports only level triggering. See chapter 20.1 for an explanation on how the Detect feature works.

Jared

[liu_zhixiang]

Thank you for your reply. I'm understand.