# ExtInt Wake-Up from Stop Mode Example
# This example demonstrates using external interrupts to wake up from low-power mode.

import time, pyb, machine
from pyb import Pin, ExtInt

def callback(line):
    pass

led = pyb.LED(3)
pin = Pin("P5", Pin.IN, Pin.PULL_UP)
ext = ExtInt(pin, ExtInt.IRQ_FALLING, Pin.PULL_UP, callback)

# Enter Stop Mode. Note the IDE will disconnect.
machine.sleep()

while (True):
    led.on()
    time.sleep(100)
    led.off()
    time.sleep(100)

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