from network import WLAN, STA_IF
from machine import Pin, ADC
from umqtt.robust import MQTTClient
from time import sleep_ms
from json import dumps, loads
from machine import Pin, PWM


bot = Pin(22, Pin.IN, Pin.PULL_DOWN)
barulhoINSUPORTAVEL = PWM(Pin(23))



rede = WLAN(STA_IF)
rede.active(True)

if not rede.isconnected():
    rede.connect("Wokwi-GUEST","")
tentativas = 0

while not rede.isconnected() and tentativas <= 20:
   sleep_ms(200)
   tentativas += 1

velho = novo = bot.value()
topico = b'ifrsrg/auto/arthur/tocamusica'

joinha = True

def informa(t, c):
    global joinha
    if t == topOK:
        resp = c.decode()
        if resp == 'ok':
            barulhoINSUPORTAVEL.init()
            barulhoINSUPORTAVEL.duty_u16(32767)

            while True:
                barulhoINSUPORTAVEL.freq(440)
                sleep_ms(500)
                barulhoINSUPORTAVEL.freq(880)
                sleep_ms(500)