BLYNK_TEMPLATE_ID "TMPL6NaNHs0mp"
BLYNK_TEMPLATE_NAME "PK ESP32"
BLYNK_AUTH_TOKEN "isKWSi-Z0Cd-3b8_eLeZBeCdcLDi2_pu"
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

bool fetch_blynk_state = true;  //true or false
 #define VPIN_BUTTON_1    V0
  #define VPIN_BUTTON_2    V1
//#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include "DHT.h"
#define DHTTYPE DHT22
DHT dht(17, DHTTYPE);
 
// define the GPIO connected with Relays and switches
#define RelayPin1 27  //D19
#define RelayPin2 26   //D19
#define wifiLed   2   //D2
 

 
// Relay State
bool toggleState_1 = LOW; //Define integer to remember the toggle state for relay 1
bool toggleState_2 = LOW;
int wifiFlag = 0;
 
char auth[] = BLYNK_AUTH_TOKEN;
  
 
  
BlynkTimer timer;
void sendSensor()
{
  float h = dht.readHumidity();
  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V3, h); // select your virtual pins accordingly
  Blynk.virtualWrite(V2, t); // select your virtual pins accordingly
}
BLYNK_WRITE(VPIN_BUTTON_1)
{
  toggleState_1 = param.asInt();
  digitalWrite(RelayPin1, toggleState_1);
  Serial.print("LED ");
  Serial.println(toggleState_1);
}
BLYNK_WRITE(VPIN_BUTTON_2)
{
  toggleState_2 = param.asInt();
  digitalWrite(RelayPin2, toggleState_2);
  Serial.print("LED2 ");
  Serial.println(toggleState_2);
}

 
void checkBlynkStatus()
{  
 
  bool isconnected = Blynk.connected();
  if (isconnected == false)
  {
    wifiFlag = 1;
    Serial.println("Blynk Not Connected");
    digitalWrite(wifiLed, LOW);
  }
  if (isconnected == true)
  {
    wifiFlag = 0;
    if (!fetch_blynk_state)
    {
      Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1);
      Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2);
    
    }
    digitalWrite(wifiLed, HIGH);
    Serial.println("Blynk Connected");
  }
}
 
BLYNK_CONNECTED()
{
  Serial.println(fetch_blynk_state);
  // Request the latest state from the server
  if (fetch_blynk_state)
  {
    Blynk.syncVirtual(VPIN_BUTTON_1);
    Blynk.syncVirtual(VPIN_BUTTON_2);
    }
}
 
void setup()
{
  Serial.begin(9600);
 Serial.print("Welcome");
  pinMode(RelayPin1, OUTPUT);
  pinMode(RelayPin2, OUTPUT);
  
 
  pinMode(wifiLed, OUTPUT);
 
   
 
  //During Starting all Relays should TURN OFF
  digitalWrite(RelayPin1, toggleState_1);
  digitalWrite(RelayPin2, toggleState_2);
   
 
  digitalWrite(wifiLed, LOW);
 dht.begin();
   
 
  //Blynk.begin(auth, ssid, pass);
  WiFi.begin(ssid, pass);
   while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  // Print local IP address and start web server
  Serial.println("");
  Serial.println("WiFi connected.");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
  timer.setInterval(2000L, checkBlynkStatus); // check if Blynk server is connected every 2 seconds
  timer.setInterval(2000L, sendSensor);
  Blynk.config(auth);
  delay(1000);
  if (!fetch_blynk_state) {
    Blynk.virtualWrite(VPIN_BUTTON_1, toggleState_1);
    Blynk.virtualWrite(VPIN_BUTTON_2, toggleState_2);
     
  }
}
 
void loop()
{
  Blynk.run();
  timer.run(); // Initiates SimpleTimer
  
}