/*

#include <WiFi.h>
#include <WiFiClient.h>
#include <PubSubClient.h>

WiFiClient wifi_client;
PubSubClient mqtt_client(wifi_client);

const char* wifi_ssid = "Mari";
const char* wifi_password = "";
int wifi_timeout = 100000;

const char* mqtt_broker = "io.adafruit.com";
const int mqtt_port = 1883;
int mqtt_timeout = 10000;

const char* mqtt_usernameAdafruitIO = "marimelo";
const char* mqtt_keyAdafruitIO = "aio_PzuH86DUoyMAZvErG157FVuMuLo0";

int valor = 0;

*/

void setup() {
  Serial.begin(115200);
  //WiFi.mode(WIFI_STA); //"station mode": permite o ESP32 ser um cliente da rede WiFi
  //WiFi.begin(wifi_ssid, wifi_password);
  //connectWiFi();
  //mqtt_client.setServer(mqtt_broker, mqtt_port);
  pinMode(14, INPUT); //pino do potenciometro
  pinMode(2, OUTPUT); //pino do led interno do esp32
  pinMode(5, OUTPUT); //pino do buzzer
}

void loop() {
  int gasState = analogRead(14);

if(gasState >= 400){
  tone(5, 400);
} else {
  noTone(5);
}

  delay(1000);
  //Serial.println(gasState);

  /*
  if (!mqtt_client.connected()) { // Se MQTT não estiver conectado
    digitalWrite(2,LOW);

    connectMQTT();
  }
  if (mqtt_client.connected()) {
    
    digitalWrite(2,HIGH);
    mqtt_client.publish("marimelo/feeds/sensor", String(gasState).c_str());
    Serial.println("Publicou o dado: " + String(gasState));
    delay(10000);
    mqtt_client.loop();
  }
  */
}

/*
void connectWiFi() {
  Serial.print("Conectando à rede WiFi .. ");

  unsigned long tempoInicial = millis();
  while (WiFi.status() != WL_CONNECTED && (millis() - tempoInicial < wifi_timeout)) {
    Serial.print(".");
    delay(100);
  }
  Serial.println();

  if (WiFi.status() != WL_CONNECTED) {
    Serial.println("Conexão com WiFi falhou!");
  } else {
    Serial.print("Conectado com o IP: ");
    Serial.println(WiFi.localIP());
  }
}

void connectMQTT() {
  unsigned long tempoInicial = millis();
  while (!mqtt_client.connected() && (millis() - tempoInicial < mqtt_timeout)) {
    if (WiFi.status() != WL_CONNECTED) {
      connectWiFi();
    }
    Serial.print("Conectando ao MQTT Broker..");

    if (mqtt_client.connect("ESP32Client", mqtt_usernameAdafruitIO, mqtt_keyAdafruitIO)) {
      Serial.println();
      Serial.print("Conectado ao broker MQTT!");
    } else {
      Serial.println();
      Serial.print("Conexão com o broker MQTT falhou!");
      delay(500);
    }
  }
  Serial.println();
}
*/