RE: Change the state of a LED when there is a rising edge of a button

Ali Rumane — Wed, 21 Apr 2021 14:31:06 GMT

As suggested by awneil, I think code won't even compile.

Here is a code you can try. You may not need nrf_gpio_pin_read since gpiote it is configured for rising edge, see what works.

#define BUTTON 4


void input_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
	if (pin == BUTTON)
    {
		if (nrf_gpio_pin_read(BUTTON))
		{
			// High state
		}
		else
		{
			// Low state
		}
	}
}


static void gpiote_init(void)
{
    ret_code_t err_code;

    if (!nrf_drv_gpiote_is_init())
    {
        err_code = nrf_drv_gpiote_init();
        APP_ERROR_CHECK(err_code);
    }

	nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_LOTOHI(true);
    in_config = NRF_GPIO_PIN_PULLDOWN;

    err_code = nrf_drv_gpiote_in_init(BUTTON, &in_config, in_pin_handler);
    APP_ERROR_CHECK(err_code);
	
	nrf_drv_gpiote_in_event_enable(BUTTON, true);
}

int main(void)
{
    ..
    ..
    gpiote_init();
    ..
    ..
}

RE: Change the state of a LED when there is a rising edge of a button

awneil — Wed, 21 Apr 2021 14:23:12 GMT

The C programming language does not allow executable statements outside functions:

nrfx_gpiote_in_config_t  configinterruption = NRFX_GPIOTE_CONFIG_IN_SENSE_HITOLO(true);
configinterruption.pull =  NRF_GPIO_PIN_PULLUP;  <<--- THIS!

void input_pin_handle(nrfx_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{