Zephyr Debounce GPIO Input with interrupt.

RE: Zephyr Debounce GPIO Input with interrupt.

Simon — Mon, 05 Jul 2021 14:18:07 GMT

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

RE: Zephyr Debounce GPIO Input with interrupt.

sshenoy105 — Fri, 02 Jul 2021 00:50:26 GMT

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

RE: Zephyr Debounce GPIO Input with interrupt.

sshenoy105 — Fri, 02 Jul 2021 00:49:36 GMT

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

RE: Zephyr Debounce GPIO Input with interrupt.

Simon — Tue, 25 May 2021 18:25:36 GMT

[quote user="vadymsodolevsky"]Additional question. Can you point me where can I find the NRFX (GPIO) drivers description for 5340?[/quote]

There are not any nrfx_gpio.c driver in <ncs location>/modules/hal/nordic/nrfx/src. As you can see in the GPIO "translation" layer <ncs location>/zephyr/drivers/gpio/gpio_nrfx.c it will include these:

#include <drivers/gpio.h>
#include <hal/nrf_gpio.h>
#include <hal/nrf_gpiote.h>
#include <nrfx_gpiote.h>

Since the GPIO is closely coupled with the GPIOTE peripheral, most of the logic is in nrfx_gpiote.c. The GPIOTE peripheral makes it possible to generate interrupts on button events.

RE: Zephyr Debounce GPIO Input with interrupt.

Simon — Tue, 25 May 2021 17:47:50 GMT

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

RE: Zephyr Debounce GPIO Input with interrupt.

VadymS — Mon, 24 May 2021 08:52:42 GMT

Additional question. Can you point me where can I find the NRFX (GPIO) drivers description for 5340?