How can use Gpiote Interrupt with s110?

Question

If the softdevice is not used, As follows:

static void gpio_init(void) {

  	  nrf_gpio_cfg_input(Record, NRF_GPIO_PIN_PULLUP);
      nrf_gpio_cfg_input(Play, NRF_GPIO_PIN_PULLUP);
      nrf_gpio_cfg_input(Menu_Dw, NRF_GPIO_PIN_PULLUP);

      NVIC_DisableIRQ(GPIOTE_IRQn);
	  NVIC_ClearPendingIRQ(GPIOTE_IRQn);

       NRF_GPIOTE->CONFIG[0] =  (GPIOTE_CONFIG_POLARITY_HiToLo << GPIOTE_CONFIG_POLARITY_Pos)
                   | (0x1E << GPIOTE_CONFIG_PSEL_Pos)     
                   | (GPIOTE_CONFIG_MODE_Event << GPIOTE_CONFIG_MODE_Pos);
                     NRF_GPIOTE->INTENSET  = GPIOTE_INTENSET_IN0_Set << GPIOTE_INTENSET_IN0_Pos;      

       NRF_GPIOTE->CONFIG[1] =  (GPIOTE_CONFIG_POLARITY_HiToLo << GPIOTE_CONFIG_POLARITY_Pos)
                   | (0x1C << GPIOTE_CONFIG_PSEL_Pos)        
                   | (GPIOTE_CONFIG_MODE_Event << GPIOTE_CONFIG_MODE_Pos);
                     NRF_GPIOTE->INTENSET  = GPIOTE_INTENSET_IN1_Set << GPIOTE_INTENSET_IN1_Pos;     

  	  __NOP();
      __NOP();
      __NOP();
 
				/* Clear the event that appears in some cases */
				NRF_GPIOTE->EVENTS_IN[0] = 0; 
				NRF_GPIOTE->EVENTS_IN[1] = 0; 

      NRF_GPIOTE->INTENSET = GPIOTE_INTENSET_IN0_Enabled << GPIOTE_INTENSET_IN0_Pos;
	  NRF_GPIOTE->INTENSET = GPIOTE_INTENSET_IN1_Enabled << GPIOTE_INTENSET_IN1_Pos;
      NVIC_EnableIRQ(GPIOTE_IRQn);

}

void GPIOTE_IRQHandler(void) {

   if ((NRF_GPIOTE->EVENTS_IN[0] != 0))
   {

	 menu_count++;				     	 
     NRF_GPIOTE->EVENTS_IN[0] = 0;
   }

   if ((NRF_GPIOTE->EVENTS_IN[1] != 0))
   {
	  
     Record_Start = (!Record_Start) ; 
     NRF_GPIOTE->EVENTS_IN[1] = 0;
   }

}

In this case operates.

But not getting the behavior when I try to put a pin input for use with S110.

I would like to run when the button receives the input of the ad or when the Bluetooth connection to each other.

If I read a few comments, Recommend the use of app_gpiote library and app_button library together.

And the ble_app_bps example of the examples were recommended.

The following sources are part of the sample.

static void button_event_handler(uint8_t pin_no, uint8_t button_action) {

  if (button_action == APP_BUTTON_PUSH)
  {
    switch (pin_no)
    {
        case SEND_MEAS_BUTTON_PIN_NO:
            blood_pressure_measurement_send();
            break;

        default:
            APP_ERROR_HANDLER(pin_no);
            break;
    }
 }

}

static void gpiote_init(void) {

    APP_GPIOTE_INIT(APP_GPIOTE_MAX_USERS);

}

static void buttons_init(void) {

    static app_button_cfg_t buttons[] =
    {
       {SEND_MEAS_BUTTON_PIN_NO,   false, BUTTON_PULL, button_event_handler},
       {BOND_DELETE_ALL_BUTTON_ID, false, BUTTON_PULL, NULL}
    };

    APP_BUTTON_INIT(buttons, sizeof(buttons) / sizeof(buttons[0]), BUTTON_DETECTION_DELAY, false);

}

If the SEND_MEAS_BUTTON_PIN_NO button is pressed, the operation will be button_event_handler.

However, if you press the BOND_DELETE_ALL_BUTTON_ID button, I don't know what to work.

And I don't know how the interrupt occurs.

I don't understand function: APP_GPIOTE_INIT(APP_GPIOTE_MAX_USERS);

Not find an association between button and interrupt.

I will wait for the reply.

Help please~

Vyacheslav Lebets · Accepted Answer

Hi, GunMin! 
 When we call APP_GPIOTE_INIT(APP_GPIOTE_MAX_USERS), the SDK call function: app_gpiote_init in app_gpiote.c and in this function the SDK initialise interrupt for GPIOTE_IRQn. 
 The interrupt handler "GPIOTE_IRQHandler", defined in same src file (app_gpiote.c), where there is a call the callback-function, defined in struct app_button_cfg_t. 
 if in app_button_cfg_t you do not define callback (4 parameter for each button), interrupt will not occur. 
 In example "ble_app_bps" calback is null for button BOND_DELETE_ALL_BUTTON_ID because pressing for this button checked "manualy", through func. "nrf_gpio_pin_read" like this: 
 nrf_gpio_pin_read(BOND_DELETE_ALL_BUTTON_ID) == 0.
 
 Best regards.

How can use Gpiote Interrupt with s110?

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