from machine import Pin, PWM
import time

# ブザー設定 (GP15)
buzzer = PWM(Pin(15))
buzzer.duty_u16(0)

# スイッチ設定 (GP16) ※外部プルダウン構成
button = Pin(16, Pin.IN)

# 確認用LED（Wokwiでは内蔵LED=GP25 + 外部抵抗）
led = Pin(18, Pin.OUT)

print("呼び鈴システム待機中...")

try:
    while True:
        if button.value() == 1:
            led.on()
            buzzer.duty_u16(32768)

            buzzer.freq(660)
            time.sleep(0.5)

            buzzer.freq(523)
            time.sleep(1.0)

            buzzer.duty_u16(0)
            led.off()
            time.sleep(0.2)

        time.sleep(0.05)

except KeyboardInterrupt:
    buzzer.duty_u16(0)
    buzzer.deinit()
    led.off()
    print("停止")