GPIOTE not working

[jhr]

This sounds like very n00bie question and I'm a bit embarrassed to ask this, but I'm not getting anywhere so I have to ask it anyway. Why my GPIOTE events are not working? I must be missing some simple initialization or configuration setting but what the heck is it? I've gone through all possible examples with no luck

Here's my ultimately simple program, which reads and prints out the pin state change correctly with polling, but never calls the handler() function. 

#define DR0 DT_GPIO_PIN(DT_ALIAS(dr0), gpios)

void handler(nrfx_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
	printf("pin %d\n", pin);
}

void main()
{
	nrfx_err_t err;
	nrfx_gpiote_in_config_t const in_config = 
	{
		.sense = NRF_GPIOTE_POLARITY_LOTOHI,
		.pull = NRF_GPIO_PIN_PULLDOWN,
		.is_watcher = false,
		.hi_accuracy = true,
		.skip_gpio_setup = false,
	};

	err = nrfx_gpiote_in_init(DR0, &in_config, handler);
	
	if (err != NRFX_SUCCESS) {
		LOG_ERR("nrfx_gpiote_in_init error: %08x", err);
		return err;
	}

	nrfx_gpiote_in_event_enable(DR0,true);

	while(1)
	{
		printf("%d\n", nrf_gpio_pin_read(DR0));
		k_msleep(1000);
	}
}

[jhr]

My example code missed of course following part. It's there, but never got copy-pasted to code snippet:

err = nrfx_gpiote_init(0);

if (err != NRFX_SUCCESS) {
LOG_ERR("nrfx_gpiote_init error: %08x", err);
}

[Håkon Alseth]

Hi,

 

This sounds like very n00bie question and I'm a bit embarrassed to ask this, but I'm not getting anywhere so I have to ask it anyway. Why my GPIOTE events are not working?

If you are stuck at something, it's always better to ask around what might be wrong. Nothing to be worried about.

When using drivers directly, ie. without using the zephyr wrappers/port for a specific component, it is required that you manually setup the interrupt.

In your case, you need to call something like this:

IRQ_DIRECT_CONNECT(GPIOTE_IRQn, 0, nrfx_gpiote_irq_handler, 0);
irq_enable(GPIOTE_IRQn);

 

A more in-depth and detailed description can be found in the documentation:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/reference/kernel/other/interrupts.html?highlight=irq_connect#interrupts

  

Kind regards,

Håkon