import time
from machine import Pin

pin_button = Pin(14, Pin.IN, Pin.PULL_DOWN)
pin_led = Pin(2, Pin.OUT)

last_state = 0
led_on = False

while True:
    current_state = pin_button.value()
    
    # 检测按键按下（上升沿检测）
    if current_state == 1 and last_state == 0:
        time.sleep_ms(20)  # 消抖
        if pin_button.value() == 1:  # 确认按下
            led_on = not led_on  # 切换LED状态
            pin_led.value(led_on)
            print("按键按下,LED状态:", "ON" if led_on else "OFF")
            
            # 等待按键释放
            while pin_button.value() == 1:
                time.sleep_ms(10)
    
    last_state = current_state
    time.sleep_ms(10)