Zephyr Debounce GPIO Input with interrupt.

[VadymS]

I work with Zephyr v1.5.1. PDK NRF5340.
I implemented interrupt from PB1 and sometimes I get double interrupt. 
1. Is input Debouncing supported in Zephyr?

2. How can I implement/change debouncing interval?

I tried to configurate the pin from "gpio_pin_configure" with flag "GPIO_INT_DEBOUNCE". I don't see the change in behavior. 

[Simon]

Could you test the button sample zephyr\samples\basic\button\src? It wiil generate an interrupt when button 1 is pressed and blink an LED.

If you get several interrupts triggered from one button press with that sample, please tell me and I will look into it.

By the way, I would recommend you to get an nRF340 DK, since the PDK is not recommended for production: https://devzone.nordicsemi.com/f/nordic-q-a/74463/nrf5340-pdk-to-ncs-1-5-x-compatibility/307212#307212 

Best regards,

Simon

[sshenoy105]

I have used that sample and i see two interrupts per press at least once every few presses.. when will NCS support GPIO INT denouncing ? asking so that I can decide to wait or quickly cook  one on my own.. thank you

[sshenoy105]

FYI: I am currently using the latest greatest NRF5340 DK and NCS 1.5.1

[Simon]

It is possible to pass in the flag GPIO_INT_DEBOUNCE to gpio_pin_configure(). However, it does not seem like the gpio_nrfx.c driver supports it unfortunately. Check out the application nrf_desktop to see one example of how to implement debouncing: https://github.com/nrfconnect/sdk-nrf/blob/11fb11eb1cbda80e9a83806e5f5499f8ce6a2cc6/subsys/caf/modules/buttons.c#L414 

Best regards,

Simon