微處理器 - Raspberry Pi RP2040 (Pico) - C/C++ - Button

參考資訊：
https://www.digikey.com/en/maker/projects/raspberry-pi-pico-and-rp2040-cc-part-1-blink-and-vs-code/7102fb8bca95452e9df6150f39ae8422

main.c

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

#define BTN 15
#define LED 25

void main(void)
{
    gpio_init(LED);
    gpio_init(BTN);
    gpio_set_dir(BTN, GPIO_IN);
    gpio_set_dir(LED, GPIO_OUT);
    gpio_pull_up(BTN);

    while (1) {
        gpio_put(LED, gpio_get(BTN));
    }
}

完成