#define BLYNK_TEMPLATE_ID "TMPL6U6BOckc-"
#define BLYNK_TEMPLATE_NAME "IoT Monitoring System"
#define BLYNK_AUTH_TOKEN "qBMSUb6sct9fhBnguITYRJXZZkHVEg3k"
#define BLYNK_PRINT Serial

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <DHT.h>

char auth[] = BLYNK_AUTH_TOKEN; //auth token
char ssid[] = "Wokwi-GUEST"; // nama hotspot yang digunakan
char pass[] = ""; // password hotspot nya

BlynkTimer timer;
DHT dht(4, DHT22);
int buzzerPin = 13;
int switchBuzz = 0;

void myTone(int pin){
  ledcAttachPin(pin, 0);  //pin, channel
  ledcWriteNote(0, NOTE_F, 4); //channel, frequency, octave
}

void myNoTone(int pin){
  ledcDetachPin(pin);
}

BLYNK_WRITE(V6){    //button widget is writing to pin V5
  int pinData = param.asInt();
  Serial.println(pinData);
  if(pinData==1){
    switchBuzz = 1;
  }
  else{
    switchBuzz = 0;
  }
}

void sendSensor(){
  float temperature = dht.readTemperature();
  float humidity = dht.readHumidity();

  if(temperature >= 40 || humidity <= 20){
    if (switchBuzz=0){
      delay(1000);
      myTone(buzzerPin);
    }
    else{
      delay(1000);
      myNoTone(buzzerPin);
    }
  }
  else{
    delay(1000);
      myNoTone(buzzerPin);
  }

  Blynk.virtualWrite(V4, temperature);
  Blynk.virtualWrite(V5, humidity);

  Serial.print("Temperature : ");
  Serial.println(temperature);
  Serial.print("Humidity : ");
  Serial.println(humidity);
  Serial.println();
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(buzzerPin, OUTPUT);
  dht.begin();
  Blynk.begin(auth, ssid, pass);
  timer.setInterval(2500L, sendSensor);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(1000); // this speeds up the simulation
  sendSensor();
  Blynk.run();
  timer.run();
}