[nRF52840 + zigbee] Wake from GPIO pin change

[embedholic]

Hi~

I am developing door sensor system using nRF52840.

Currently for power consumption, sensor (nRF52840) is system off(NRF_POWER->SYSTEMOFF=1).

nRF52840 can wake up from system off.

Questions are

1. Can both edges of given gpio can wake up ? Only falling or rising edge can be set for nrf_gpio_cfg_sense_input.

2. When wakeup(practically reset) from system off, Can the nRF52840 distinguish from multiple gpio edge interrupts?

Thanks.

[Andreas]

Hi,

 

1) Yes, this is determined by the SENSE level, which generates the DETECT signal used to wake up.

2) No, the wakeup triggers a power-on reset, which resets everything.

 

Best regards,

Andreas