How to handle GPIO interrupts while it is configures to SENSE low

[Jorgewu]

Hi all: All of the example code is using GPIOTE to demonstrate how to handle GPIO interrupt. However, it just can configured HiTOLow/LowToHi/Toggle. If I want to trigger the interrupt by sense Low/High, how can I implement the function. For example, we can register a event handler by calling the function of nrf_drv_gpiote_in_init(). How can I register a event handler to handle GPIO interrupts while it sense LOW/HIGH?

Thanks...

[Mikhail]

I try to use external interrupt from pin.

Use example \examples\peripheral\pin_change_int

but doesn't work. I can't receive handler in_pin_handler()

my code:

void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
HAL_GPIO_EXTI_Callback();
}

static void gpio_init2(void)

{
ret_code_t err_code;

err_code = nrf_drv_gpiote_init();
APP_ERROR_CHECK(err_code);

//    nrf_drv_gpiote_out_config_t out_config = GPIOTE_CONFIG_OUT_SIMPLE(false);

nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_LOTOHI(true);
in_config.pull = NRF_GPIO_PIN_NOPULL;

err_code = nrf_drv_gpiote_in_init(INT1, &in_config, in_pin_handler);
APP_ERROR_CHECK(err_code);

nrf_drv_gpiote_in_event_enable(INT1, true);
}

where is my wrong?

[sachin.singh]

Hi Mikhail, 

You can try this :

void in_pin_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
      if(pin == INT1)
        {
            // Function or tast to be done here ...
        }
HAL_GPIO_EXTI_Callback();
}

All the BEST