除 ticks_ms 外，也可用 ticks_us 單位不一樣

# 範例十六:

# ticks_ms 用法，讓 led 每隔一秒閃爍一次

# 需要的 module :

# FB : https://www.facebook.com/mason.chen.1420

from machine import Pin

from machine import Timer

cnt = None

# Describe this function...

def timer1_func():

global cnt

if cnt == 0:

Pin(12, Pin.OUT).value(0)

cnt = 1

else:

Pin(12, Pin.OUT).value(1)

cnt = 0

cnt = 0

timer1 = Timer(1)

timer1.init(period=1000, mode=Timer.PERIODIC, callback=lambda t:timer1_func())