Web Control Buzzer

.py

# -*- coding: utf-8 -*-
from bottle import route,run,template,request
import pigpio
import time
import threading
BZ=18
BUZZERON=False
gpio=pigpio.pi()
gpio.set_mode(BZ,pigpio.OUTPUT)
scale=[523,587,659,698,783,880,987,1046]

def play_buzzer():
    global BUZZERON
    while BUZZERON:
        for i in scale:
            if not BUZZERON:  # 如果 BUZZERON 被设置为 False，退出循环
                break
            gpio.hardware_PWM(BZ, i, 100)
            time.sleep(0.4)
            gpio.hardware_PWM(BZ, 0, 0)
            time.sleep(0.1)

@route("/")
def toppage():
    return template("toppage")

@route("/buzzer",method="get")
def buzzer():
    global BUZZERON
    buzzer_value=request.query.get("buzzer")
    if buzzer_value=="0":
        BUZZERON=False

    if buzzer_value=="1":
        BUZZERON=True
        threading.Thread(target=play_buzzer, daemon=True).start()
        
    return template("toppage")

try:
    run(host="localhost",port=8080,debug=True)
               
except KeyboardInterrupt:
    pass
finally:
    gpio.hardware_PWM(BZ,0,0)
    gpio.stop()


    
.html

＜!DOCTYPE html>
＜html lang="ja"＞
＜head＞＜meta charset="utf-8"＞＜title＞Web LED＜/title＞＜/head＞

＜body＞

＜h1>Top Page

＜form action="/buzzer">

＜input name="buzzer" type="hidden" value="1">
＜input type="submit" value="buzzer ON">
＜/form>

＜form action="/buzzer">
＜input name="buzzer" type="hidden" value="0">
＜input type="submit" value="buzzer OFF">
＜/form＞

＜/body＞

＜/html＞