NCS Low Power Button Press/Release Detection

[erickcinco]

Hello,

I have found a few old posts about edge detection on gpio using ncs having higher power consumption and suggestions to use level detection.

What is the correct way to set this up?

Is there an equivalent of NRFX_GPIOTE_CONFIG_IN_SENSE_TOGGLE(false) functionality in NCS? i.e. ensuring I set up port event instead of in_event.

Thank you for any help on this matter.

[Sigurd]

Hi,

You need to set the sense-edge-mask in the devicetree for this. Like this:

https://github.com/nrfconnect/sdk-zephyr/blob/main/tests/drivers/gpio/gpio_basic_api/boards/nrf52840dk_nrf52840_sense_edge.overlay

See the description here: https://github.com/nrfconnect/sdk-zephyr/blob/main/dts/bindings/gpio/nordic,nrf-gpio.yaml#L17

[erickcinco]

Thank you!

[erickcinco]

Sigurd I was using GPIO_INT_EDGE_BOTH for the flags param of gpio_pin_interrupt_configure_dt(). It looks like its working but should I use (GPIO_INT_ENABLE | GPIO_INT_LEVELS_LOGICAL | GPIO_INT_TRIG_BOTH) instead?

Referencing Marte Myrvold comment in RE: reducing current consumption of nrf5340 GPIO interrupts configured for edge triggering

[Sigurd]

Hi,

I don't think that matters in recent versions of NCS. 1-2 years ago, EDGE interrupt in Zephyr used GPIOTE IN event, but it now support sense/port event as well.