# 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_ms(100) led.off() time.sleep_ms(100)