two interupts on same gpiote with two different pins nrf5340

[manikandan]

hello,

i am using sdk 2.4.0 with nrf5340 i want to enable two diffferents buttons with interupts without disabling the one interupt because i need these two button for different scenario i cant basically trun off one interupt while using other 

/* API Prototypes */
void gpio_init()
{

	nrfx_err_t err;

	// Connect GPIOTE_0 IRQ to nrfx_gpiote_irq_handler 
	IRQ_CONNECT(DT_IRQN(DT_NODELABEL(gpiote)),
				DT_IRQ(DT_NODELABEL(gpiote), priority),
				nrfx_isr, nrfx_gpiote_irq_handler, 0);



	err = nrfx_gpiote_init(0);
	if (err != NRFX_SUCCESS)
	{
		// LOG_ERR("nrfx_gpiote_init error: %08x", err);
		return;
	}
nrfx_gpiote_in_config_t const mode_in_config = {
		.sense = NRF_GPIOTE_POLARITY_HITOLO,
		.pull = NRF_GPIO_PIN_NOPULL,
		.is_watcher = false,
		.hi_accuracy = true,
		.skip_gpio_setup = false,
	};

	nrfx_gpiote_in_config_t const in_config = {
		.sense = NRF_GPIOTE_POLARITY_HITOLO,
		.pull = NRF_GPIO_PIN_NOPULL,
		.is_watcher = false,
		.hi_accuracy = true,
		.skip_gpio_setup = false,
	};

	
/*	err = nrfx_gpiote_in_init(BUTTON_1_Pin, &mode_in_config, mode_button_handler);
	if (err != NRFX_SUCCESS)
	{
		 printf("nrfx_gpiote_in_init error 111111: %08x", err);
		return;
	}
	nrfx_gpiote_in_event_enable(BUTTON_1_Pin, true);*/
		err = nrfx_gpiote_in_init(BUTTON_2_Pin, &in_config, button_handler);
	if (err != NRFX_SUCCESS)
	{
		 printf("nrfx_gpiote_in_init error 2222222: %08x", err);
		return;
	}

nrfx_gpiote_in_event_enable(BUTTON_2_Pin, true);
	
	
}

i am getting error nrfx_gpiote_in_init error: 0bad0002 while initilaising second interupt

regards

manikandan 

[Vidar Berg]

Hello Manikandan,

It's not possible to register two callbacks on the same pin. Would it be an option to register a single callback and create a global state flag or similar mechanism, which you can check in the button callback to determine how the event should be handled?

Best regards,

Vidar

[manikandan]

Hi sry  not same pin two different pins can you verify my code?

[Vidar Berg]

I misread the code at first. Do you get the 'NRFX_ERROR_NO_MEM' error when you only try enable button interrupt for BUTTON_2_pin and not the BUTTON_1_pin, or does it only happen when you try to enable both? 

[manikandan]

It only happens when I try to enable the both

[Vidar Berg]

That suggests you have used up all 8 GPIOTE channels. A solution is to GPIOTE PORT events to detect the button interrupts. This is done by setting the .hi_accuracy flag to 'False'.

[manikandan]

hi,thanks for the reply if i set that to flag to flase button interupts were not detected this is how i am doing it

#define BUTTON_2_Pin		43//_PINNUM(1, 11)	//B20(P1.11)
static void button_handler(nrfx_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{

	if (action == NRF_GPIOTE_POLARITY_LOTOHI && pin == BUTTON_2_Pin)
	{
	//	printk("MY HANDLING\n");
		
	}
}
/* API Prototypes */
void gpio_init()
{

	nrfx_err_t err;

	/* Connect GPIOTE_0 IRQ to nrfx_gpiote_irq_handler */
	IRQ_CONNECT(DT_IRQN(DT_NODELABEL(gpiote)),
				DT_IRQ(DT_NODELABEL(gpiote), priority),
				nrfx_isr, nrfx_gpiote_irq_handler, 0);

	/* Initialize GPIOTE (the interrupt priority passed as the parameter
	 * here is ignored, see nrfx_glue.h).
	 */
	err = nrfx_gpiote_init(0);
	if (err != NRFX_SUCCESS)
	{
		// LOG_ERR("nrfx_gpiote_init error: %08x", err);
		return;
	}

	nrfx_gpiote_in_config_t const in_config = {
		.sense = NRF_GPIOTE_POLARITY_LOTOHI,
		.pull = NRF_GPIO_PIN_PULLUP,
		.is_watcher = false,
		.hi_accuracy = false,
		.skip_gpio_setup = false,
	};

	/* Initialize input pin to generate event on high to low transition
	 * (falling edge) and call button_handler()
	 */
	err = nrfx_gpiote_in_init(BUTTON_2_Pin, &in_config, button_handler);
	if (err != NRFX_SUCCESS)
	{
		// LOG_ERR("nrfx_gpiote_in_init error: %08x", err);
		return;
	}

	nrfx_gpiote_in_event_enable(BUTTON_2_Pin, true);
}

regards

manikandan v

[Vidar Berg]

I don't see any obvious errors in the code. Please try to debug your application in VS code and see if P1.11 becomes configured correctly after  the nrfx_gpiote_in_init() function has been run.

It should look like this: