from machine import Pin
import time

# LED 設在 GP2
led = Pin(2, Pin.OUT)

# 按鈕設在 GP15，使用內建下拉電阻
button = Pin(15, Pin.IN, Pin.PULL_DOWN)

while True:
    if button.value() == 1:   # 按下
        led.value(1)          # LED 亮
    else:                     # 放開
        led.value(0)          # LED 滅

    time.sleep(0.01)