from machine import Pin, Timer
import time

# ======================
# 配置
# ======================
DELAY_SEC = 5
CHECK_MS = 200

PIR_PIN = 13
RADAR_PIN = 15
RELAY_PIN = 14

# ======================
# 硬件初始化（关键修复！）
# ======================
# 传感器都用 PULL_DOWN 下拉，防止开机误判
pir = Pin(PIR_PIN, Pin.IN, Pin.PULL_DOWN)
radar = Pin(RADAR_PIN, Pin.IN, Pin.PULL_DOWN)
relay = Pin(RELAY_PIN, Pin.OUT, value=0)

# ======================
# 计时变量
# ======================
last_pir = time.ticks_ms()
last_radar = time.ticks_ms()
light_on = False

# ======================
# 核心检测
# ======================
def check_sensors(t):
    global last_pir, last_radar, light_on
    now = time.ticks_ms()

    # ======================
    # 正确电平：没人=0，有人=1
    # 你之前反了！！！
    # ======================
    pir_occupied = pir.value() == 1
    radar_occupied = radar.value() == 1

    # 有人 → 刷新时间
    if pir_occupied:
        last_pir = now
    if radar_occupied:
        last_radar = now

    # 判断超时
    pir_timeout = time.ticks_diff(now, last_pir) > DELAY_SEC * 1000
    radar_timeout = time.ticks_diff(now, last_radar) > DELAY_SEC * 1000

    someone = not pir_timeout or not radar_timeout

    # 开灯
    if someone and not light_on:
        relay.value(1)
        light_on = True
        print("[开灯] 检测到人体")

    # 关灯
    elif not someone and light_on:
        relay.value(0)
        light_on = False
        print(f"[关灯] {DELAY_SEC}秒无人")

    # 状态打印
    if light_on:
        print(f"PIR: {'有人' if pir_occupied else '无人'} | 雷达: {'有人' if radar_occupied else '无人'} | 灯亮")

# ======================
# 启动
# ======================
tim = Timer(0)
tim.init(period=CHECK_MS, mode=Timer.PERIODIC, callback=check_sensors)

print("==================================")
print(" 双传感器 最终正确版")
print(" 开机不会误触发")
print("==================================")