#用樹莓派連接三個LED, 一個開關, 在10秒鐘內, 按了開關一下, 
#就亮一個 LED, 按了兩下就亮兩個 LED, 按了三下就亮三個LED。
#第一次按下之後的 10 秒內沒有再按, 就重設次數與秒數, 按了四下也重設。

import time
import board
import digitalio

state = 0
start_time = 0
button_state = False

button = digitalio.DigitalInOut(board.GP1)

button.direction = digitalio.Direction.INPUT
button.pull = digitalio.Pull.DOWN

led1 = digitalio.DigitalInOut(board.GP2)
led2 = digitalio.DigitalInOut(board.GP4)
led3 = digitalio.DigitalInOut(board.GP5)

led1.direction = digitalio.Direction.OUTPUT
led2.direction = digitalio.Direction.OUTPUT
led3.direction = digitalio.Direction.OUTPUT

print('start')

while True:
  if button.value:
    button_state = True
    #state += 1
    start_time = time.monotonic()
  else:
    if button_state:
      state += 1
      button_state = False
    if (time.monotonic() - start_time) >= 10:
      state = 0

  if state == 0:
    led1.value = False
    led2.value = False
    led3.value = False
  elif state == 1:
    led1.value = True
    led2.value = False
    led3.value = False
  elif state == 2:
    led1.value = True
    led2.value = True
    led3.value = False
  elif state == 3:
    led1.value = True
    led2.value = True
    led3.value = True
  else:
    state = 0
    led1.value = False
    led2.value = False
    led3.value = False
  
  time.sleep(0.1)