# Timer Control Example # # This example shows how to use a timer for callbacks. import time from pyb import Pin, Timer, LED blue_led = LED(3) # we will receive the timer object when being called # Note: functions that allocate memory are Not allowed in callbacks def tick(timer): blue_led.toggle() tim = Timer(2, freq=1) # create a timer object using timer 2 - trigger at 1Hz tim.callback(tick) # set the callback to our tick function while (True): time.sleep(1000)