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

#define BLYNK_TEMPLATE_ID "TMPL3Z8db67lj"
#define BLYNK_TEMPLATE_NAME "DHT"
#define BLYNK_AUTH_TOKEN "LhvcgwSi_owg8KcTcJzaSed7zuSSLdJD"

#define DHT_PIN 18 
#define DHT_TYPE DHT22

// Wi-Fi credentials for Wokwi
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

// Initialize DHT sensor
DHT DHT(DHT_PIN, DHT_TYPE);

// Blynk timer to send data periodically
BlynkTimer timer;

// Function to read DHT sensor and send data to Blynk
void sendSensorData() {
  float temp_value = DHT.readTemperature(true); // Fahrenheit
  float humidity_value = DHT.readHumidity();   

  if (isnan(temp_value) || isnan(humidity_value)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }

  Serial.print("Temperature: ");
  Serial.print(temp_value);
  Serial.println(" °F");

  Serial.print("Humidity: ");
  Serial.print(humidity_value);
  Serial.println(" %");

  // Send data to Blynk
  Blynk.virtualWrite(V0, temp_value);
  Blynk.virtualWrite(V1, humidity_value);
}

void setup() {
  Serial.begin(115200);
  DHT.begin();
  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);

  // Set a timer to call sendSensorData() every 2 seconds
  timer.setInterval(2000L, sendSensorData);
}

void loop() {
  Blynk.run();  // Keep Blynk connected
  timer.run();  // Run the timer
}