Two GPIOTE not working at the same time

RE: Two GPIOTE not working at the same time

Jared — Tue, 30 Jul 2024 14:29:26 GMT

Hi,

In the last lines of your code you setup the IN event on LOW by using nrf_gpio_cfg_sense_input(). This means that if either P0.24 or P1.1 is pulled low, then the IN event will be generated. Thus you need to make sure that both pins are pulled low before you go system off sleep.

I made a simple sample setting up the IN event on Button 1 and Button 2 for HIGH on the devkit and it worked:

#include <stdbool.h>
#include <stdint.h>
#include "nrf_delay.h"
#include "boards.h"
#include "nrf_gpio.h"
#include "nrf_log.h"
#include "nrf_log_ctrl.h"
#include "nrf_log_default_backends.h"

#define LED_PIN 13
#define BUTTON_1 11
#define BUTTON_2 12

int  main(void)
{

nrf_gpio_cfg_output(LED_PIN);
nrf_gpio_pin_clear(LED_PIN);

 nrf_delay_ms(2000);
 nrf_gpio_pin_set(LED_PIN);
 nrf_gpio_cfg_sense_input(BUTTON_1, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);
 nrf_gpio_cfg_sense_input(BUTTON_2, NRF_GPIO_PIN_PULLUP, NRF_GPIO_PIN_SENSE_LOW);


  while (1)
  {
    NRF_POWER->SYSTEMOFF = 1;
    nrf_delay_ms(2000);
  }


return 0;
}

regards

Jared

RE: Two GPIOTE not working at the same time

Emrah Eksisu — Mon, 29 Jul 2024 12:06:48 GMT

Hi,

Yes, it does not wake up from sleep mode.

The pin P1.1 is pulled through the pull-down circuit.
The pin P0.24 is pulled over the pull-up circuit.

RE: Two GPIOTE not working at the same time

Jared — Mon, 29 Jul 2024 11:51:50 GMT

Hi,

By doesn't work, you mean that it does not wakeup from sleep?

Can you double check that none of the pins are already held high when you test this? If one of the pins are already high when you try to test this, it will effectively block the other interrupts pins from firing,

regards

Jared