from machine import Pin, PWM
from time import sleep, time

wait_close = False
open_time = None

# GPIO14引脚连接人体红外运动传感器PIR
pir = Pin(14, Pin.IN, Pin.PULL_UP)
# GPIO12引脚连接继电器控制指示灯
light = Pin(12, Pin.OUT)

# GPIO13连接继电器控制门锁
door_Relay = Pin(13, Pin.OUT)

# 25引脚做输入
serve_open_door = Pin(25, Pin.IN, Pin.PULL_UP)
# 27引脚：开门按键输入
open_door = Pin(27, Pin.IN, Pin.PULL_UP)
# 26引脚：关门按键输入
close_door = Pin(26, Pin.IN, Pin.PULL_UP)

# ✅ 初始化蜂鸣器：接在 GPIO32
buzzer = PWM(Pin(32))
buzzer.duty(0)  # 默认不响

while True:
    # door_Relay.value(1)
    if serve_open_door.value() == 0:
        print('serve_open_door',door_Relay.value())
        door_Relay.value(1)
        open_time = time()

    if open_door.value() == 0:
        door_Relay.value(1)
        print('open_door',door_Relay.value())
        open_time = time()
    
    if close_door.value() == 0:
        door_Relay.value(0)
        print('close_door',door_Relay.value())
        open_time = None

    # print(serve_open_door.value(),open_door.value(),close_door.value(),door_Relay.value())
    wait_close = True if door_Relay.value() else False

    # ✅ 判断是否开门超过 5 秒，响蜂鸣器
    if open_time and wait_close:
        elapsed = time() - open_time
        if elapsed > 5:
            print("门已开启超过 5 秒，响蜂鸣器提醒")
            buzzer.freq(623)   # 设定频率 1kHz
            buzzer.duty(512)    # 设定响度（0~1023，512 是一半）
        else:
            buzzer.duty(0)      # 不响
    else:
        buzzer.duty(0)          # 不响
    light.value(1 if pir.value() else 0)
    sleep(0.01)