Use P1.04 as interruption in nrf5340

hello everyone, recently I entered the world of nordic,

and I have been testing some of the functionalities, of one of the devices,

 specifically the nrf5304 dk model, I am trying to make a connection between a sensor and this model

using gpio P1.04 as interrupted, however taking into account what I learned from the course,
 I have not found a way to interact with the pin using the nordic sdk, 
as I understand it seems to be possible to use the gpio linked to the buttons and leds, 
but I would like to know if is it possible to use other pins and how to do the configuration process.

Again I would really appreciate your help.

0 sshenoy105 over 2 years ago

P1.04 is oin 4 in GPIO1 port/peripheral.. This is generally what you could ... you may need to tweak it to compile/work for you

const struct device *gpio_1_dev; //device struct for GPIO1
static struct gpio_callback my_cb; //callback handle
gpio_1_dev = device_get_binding("GPIO_1");

if (!gpio_1_dev) {
printk("\n!!!!!!!! Cannot get GPIO_1 device\n");
return;
} else {
printk("\nGPIO_1 device binding SUCCESS\n");
}

//ocnfigure your pin for interrupt

gpio_pin_configure(gpio_1_dev, 4, GPIO_INPUT);

int ret = gpio_pin_interrupt_configure(gpio_1_dev, 4, GPIO_INT_EDGE_FALLING); // edge falling is just an example.. you should set it what you need it to be
if (ret != 0) {
printk("Error %d: failed to configure interrupt pin %d\n", ret, 4);
return;
}

//set up call backs )(what to do once you get an interrupt)
gpio_init_callback(&my_cb, my_intr_process, BIT(4));
gpio_add_callback(gpio_1_dev, &my_cb);



// and define your actual call back function which does whatever you need to do when interrupt does show up.. hint.. don;t do too many things here
void my_intr_process(const struct device *dev, struct gpio_callback *cb, uint32_t pins) {
printk("\n\n my intr happened\n\n");

//give semaphore or set a voltaile flag etc.
}