from machine import Pin
import time

led = Pin(22, Pin.OUT) # 创建引脚4为LED对象，设置引脚4为输出                  
button = Pin(18, Pin.IN, Pin.PULL_UP) #Pin15创建引脚15按钮对象，设置GP15为输入

#按钮要做的事
def reverseGPIO():
    if led.value():
        led.value(0)     #LED熄灭
    else:
        led.value(1)     #LED点亮

try:
    while True:
        if not button.value():
            time.sleep_ms(20)
            if not button.value():
                reverseGPIO()
                while not button.value():
                    time.sleep_ms(20)
except:
    pass