from machine import Pin
import time

# 定义按钮引脚
but=Pin(14,Pin.IN,Pin.PULL_DOWN)

#定义led灯引脚
led=Pin(12,Pin.OUT)

def irq_arr(but):
    time.sleep_ms(10)
    if but.value()==1:
        led.value(not led.value())

but.irq(irq_arr,Pin.IRQ_RISING)