#define BLYNK_TEMPLATE_ID "TMPL5MT4G5gw1"
#define BLYNK_TEMPLATE_NAME "Smart Home Temperature Monitoring System Using Bly"
#define BLYNK_AUTH_TOKEN "CqRW5snUoGlhlXcilKTA8n3vmOkmMuxb"
#define BLYNK_PRINT Serial

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

char auth[] = "CqRW5snUoGlhlXcilKTA8n3vmOkmMuxb";  

// Your WiFi credentials
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

#define DHTPIN 2           
#define DHTTYPE DHT22 

DHT dht(DHTPIN, DHTTYPE);

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;
  }

  Blynk.virtualWrite(V0, static_cast<double>(t));  // Send temperature data to virtual pin V5
  Blynk.virtualWrite(V2, static_cast<double>(h));  // Send humidity data to virtual pin V6

  char tempStr[16]; // Buffer to hold the string
  dtostrf(t, 6, 2, tempStr);
  Blynk.virtualWrite(V1, String("Temperature of the room is: ") + tempStr);
}

void setup()
{
  Serial.begin(9600);
  Blynk.begin(auth, ssid, pass);
  dht.begin();
  timer.setInterval(1000L, sendSensor);  // Send sensor data every second
}

void loop()
{
  Blynk.run();
  timer.run();
}