GPIOTE interrupt has not trigger

[JackSnow]

I want to generate an interrupt event use pin30 when it goes from low->high or high->low. First I register a gpiote user by

app_gpiote_user_params_t app_gpiote_params =
{
    .pins_low_to_high_mask  = (1 << CONFIG_IO_BATDETECT),
    .pins_high_to_low_mask  = (0 << CONFIG_IO_BATDETECT),
    .config                 = GPIOTE_CONFIG_IN_SENSE_TOGGLE(true),
};
//app_gpiote_params.config.pull = NRF_GPIO_PIN_PULLDOWN;
retval = app_gpiote_user_register_param(&m_batdetect_user_id,
                                        &app_gpiote_params,
                                        batterydetect_gpiote_event_handler);

CONFIG_IO_BATDETECT represent pin30,batterydetect_gpiote_event_handler is the handle function when interrupt generated.Then I use

APP_ERROR_CHECK(app_gpiote_user_enable(m_batdetect_user_id));

to enable GPIOTE.I also change the APP_GPIOTE_MAX_USERS from 2 to 3:

#define APP_GPIOTE_MAX_USERS            3

in the main.c.The event handle function as follow:

		APP_ERROR_CHECK(app_gpiote_user_disable(m_batdetect_user_id));
	DBG0_EVT0("jack:m_keyboard: Disabled");
	if (event_pins_low_to_high & TEST_PIN_L2H)
	{
			DBG0_EVT0("jack:event_pins_low_to_high");
	}
	
	if (event_pins_high_to_low & TEST_PIN_H2L)
	{
			DBG0_EVT0("jack:event_pins_high_to_low");
	}
	
	DBG0_EVT0("jack:m_keyboard: enabled");
	APP_ERROR_CHECK(app_gpiote_user_enable(m_batdetect_user_id));

While the function has never been triggered. Have I miss something ? The SDK is v11.0.0 by the way.

[Hung Bui]

I assume you define app_gpiote_user_register_param() yourself ?

Please be aware that app_gpiote is deprecated, and you should use gpiote driver instead.

Have you tried to follow the documentation ? This code worked for me:

APP_GPIOTE_INIT(1);
    uint32_t  low_to_high_bitmask = (1 << 13); // Bitmask to be notified of transition from low to high for GPIO 0-3
    uint32_t  high_to_low_bitmask = (1 << 13); // Bitmask to be notified of transition from high to low for GPIO 0-2
    retval = app_gpiote_user_register(&m_example_user_id,
                                  low_to_high_bitmask,
                                  high_to_low_bitmask,
                                  example_gpiote_event_handler);
    APP_ERROR_CHECK(retval);
    nrf_gpio_cfg_input(13,NRF_GPIO_PIN_PULLUP);

    retval = app_gpiote_user_enable(m_example_user_id);
    APP_ERROR_CHECK(retval);

I found that I need to configure the pin as input after registering to make it work, pretty strange.

[JackSnow]

Thanks,Hung Bui. In the SR3 application app_gpiote_user_register() is defined as:

static inline uint32_t app_gpiote_user_register(app_gpiote_user_id_t *     p_user_id,
                                            uint32_t                   pins_low_to_high_mask,
                                            uint32_t                   pins_high_to_low_mask,
                                            app_gpiote_event_handler_t event_handler)
{
const app_gpiote_user_params_t params = {
    .pins_low_to_high_mask = pins_low_to_high_mask,
    .pins_high_to_low_mask = pins_high_to_low_mask,
    .config                = GPIOTE_CONFIG_IN_SENSE_TOGGLE(false)
};
return app_gpiote_user_register_param(p_user_id, &params, event_handler);
}

Maybe the voltage of pin30 is not stablization, sometimes the function can be triggered now(I didn't configure the pin as input),but this only happens in the SYSTEM ON mode. Once switch to SYSTEM OFF mode, nothing happens.

[JackSnow]

This example code help me solve the problem:nrf5x-powerdown-examples. Thanks anyway.

[Hung Bui]

When the device in systemOFF mode, GPIOTE won't work, you need to configure it with Sense and DETECT signal from GPIO not GPIOTE.