#紅綠燈

from machine import Pin, Timer

red = Pin(23, Pin.OUT)
red.value(0)

yellow = Pin(25, Pin.OUT)
yellow.value(0)

green = Pin(26, Pin.OUT)
green.value(0)

leds = [red, yellow, green]
led_time = [200, 100, 300]
led_num = 0

def Led_toggle(t): #紅綠燈自動閃
    global leds, led_num
    led = leds[led_num]
    led.value(not led.value())
    led_num = (led_num+1)%3
    leds[led_num].value(1)
    timer.init(period=led_time[led_num], mode=Timer.ONE_SHOT, callback=Led_toggle)
    
leds[led_num].value(1)

button_switch = Pin(32,Pin.IN, Pin.PULL_UP) #black button
button_manual = Pin(33,Pin.IN, Pin.PULL_UP) #blue button

pressed = False
mode = 1
a=0  #a=1:red , a=2:yellow , a=3:green
b=0  #使切手動時紅綠燈只會關掉一次
on_timer = False
On_timer = False

timer = Timer(0) #紅綠燈自動閃
timer1 = Timer(1) #防彈跳
timer2 = Timer(2) #防彈跳

def mycallback(t): #防彈跳(1)
    global on_timer, pressed
    on_timer = False
    pressed = False

def Mycallback(t): #防彈跳(2)
    global On_timer
    On_timer = False

def led_toggle(pin): #切換模式
  global mode,pressed,b,a 

  if pressed == False:
      mode = not mode
      a=0
      b=1
      pressed = True 

button_switch.irq(handler = led_toggle, trigger = Pin.IRQ_FALLING)

def Red():
    if a==1:
        red.value(1)
        yellow.value(0)
        green.value(0)
def Yellow():
    if a==2:
        red.value(0)
        yellow.value(1)
        green.value(0)
def Green():
    if a==3:
        red.value(0)
        yellow.value(0)
        green.value(1)


while True:
    if mode == 1 and on_timer == False:
      red.value(0)
      yellow.value(0)
      green.value(0)  
      leds[led_num].value(1)
      timer.init(period=led_time[led_num], mode=Timer.ONE_SHOT, callback=Led_toggle)
      timer1.init(mode=Timer.ONE_SHOT, period=700, callback=mycallback)
      on_timer = True
      #避免多次打開timer.init
      
    if mode == 0 :
        
        if b==1:
            timer.deinit()
            red.value(0)
            yellow.value(0)
            green.value(0)
            
        if button_manual.value() == 0 and On_timer == False: 
            if a<3:
                a+=1
                b=2
                timer2.init(mode=Timer.ONE_SHOT, period=200, callback=Mycallback)
                On_timer = True
                print(a)
            else:
                a=0    
        Red()
        Yellow()    
        Green()