#include <stdio.h>
#include "pico/stdlib.h"

const uint LED_PIN = 25; // Onboard LED

int main() {
    gpio_init(LED_PIN);
    gpio_set_dir(LED_PIN, GPIO_OUT);

    while (true) {
        gpio_put(LED_PIN, 0);
        sleep_ms(500);
        gpio_put(LED_PIN, 1);
        sleep_ms(500);
    }
}
BOOTSELLED1239USBRaspberryPiPico©2020RP2-8020/21P64M15.00TTT