zephyr-configurator/snippets/led/code.txt

/* --------------------------- */
/*              LED            */
/* --------------------------- */

/* Imports / Declarations */
#include <zephyr/kernel.h>
#include <zephyr/drivers/gpio.h>

/* The devicetree node identifier for the "led0" alias. */
#define LED0_NODE DT_ALIAS(led0)

/*
 * A build error on this line means your board is unsupported.
 * See the sample documentation for information on how to fix this.
 */
static const struct gpio_dt_spec led = GPIO_DT_SPEC_GET(LED0_NODE, gpios);


/* Functions */
int initialize_led(void) {
    int ret;

	if (!gpio_is_ready_dt(&led)) {
		return 0;
	}

	ret = gpio_pin_configure_dt(&led, GPIO_OUTPUT_ACTIVE);
	if (ret < 0) {
		return 0;
	}
}

int blink_led(int blink_delay) {
    int ret;

	while (1) {
		ret = gpio_pin_toggle_dt(&led);
		if (ret < 0) {
			return 0;
		}
		k_msleep(blink_delay);
	}
	return 0;
}

/*
Example:

int main(void)
{
	initialize_led();
	blink_led(10000); # Millis

	return 0;
}
*/