GPIO Interrupt not triggered

[Hieu]

I am trying to set up a button interrupt by adding the following functions:

void button_interrupt_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
    nrf_gpio_pin_toggle(LED_4);
}

void button4_config()
{
    nrf_drv_gpiote_in_config_t config;
    memset(&config, 0, sizeof(nrf_drv_gpiote_in_config_t));
    config.sense = NRF_GPIOTE_POLARITY_HITOLO;
    config.pull = NRF_GPIO_PIN_NOPULL;
    config.hi_accuracy = false;
    config.is_watcher = false;
    
    nrf_drv_gpiote_in_init(BUTTON_4, &config, button_interrupt_handler);
    nrf_drv_gpiote_in_event_enable(BUTTON_4, true);
    
}
int main(void)
{
    // ...
    button4_config();
    // ...
}

When I tried to press the button, my interrupt is never called. Not even once.

Thinking that maybe the problem is because I was using BUTTON_4, I have also tried to replace it with pin 29 and use an external button. That doesn't work either.

What could I be missing?

[Petter Myhre]

Yes. It should be pulled up. Overwrite the button behavior? I don't quite understand.

[Hieu]

My sincere apology, Petter. I was tangled up with a lot of deadline soon after our last discussion, and replying to you slipped out of my mind.

What I meant by overwriting the button behavior is replacing the behavior bsp_init() programmed with my own.

[FormerMember]

Yes, you can choose to not include the BSP module in your project.

[FormerMember]

The example provided in this thread replaces the BSP module by GPIOTE events directly.

[Hieu]

@kristin: I understood that I could simply remove BSP. However, what I am asking is for quick test, is there a way for me to override just 1-2 buttons and 1-2 LED that the BSP controls, without having to configure BSP again.

I figured one of the thing I could do is create a template project where it includes a modified pca10028.h that only make use of 2 LED and 2 Button. Yet if there is a better way I am interested in learning.