#include <WiFi.h>  // For ESP8266, use <WiFi.h> for ESP32
  #include <PubSubClient.h>
  #include <DHT.h>

  // DHT22 Settings
  #define DHTPIN 25          // Pin where DHT11 is connected
  #define DHTTYPE DHT22      // DHT 22

  DHT dht(DHTPIN, DHTTYPE);

  // Wi-Fi Settings
  const char* ssid = "Wokwi-GUEST";
  const char* password = "";

  // MQTT Settings
  const char* mqtt_server = "test.mosquitto.org";// This is the free MQTT broker we will use.
  const int mqtt_port = 1883;
  const char* mqtt_user = "your-MQTT-username";  // Optional
  const char* mqtt_pass = "your-MQTT-password";  // Optional
  const char* topic_temperature = "home/livingroom/temperature";
  const char* topic_humidity = "home/livingroom/humidity";

  WiFiClient espClient;
  PubSubClient client(espClient);
  float t, h;
  void setup() {
    Serial.begin(9600);
     dht.begin();
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
      delay(1000);
      Serial.println("Connecting to WiFi...");
    }
    Serial.println("WiFi connected");
    client.setServer(mqtt_server, mqtt_port);
   t=23.5;  // testing============
     h=35;    // testing============
  }

  void reconnect() {
    while (!client.connected()) {
      if (client.connect("DHT22Client", mqtt_user, mqtt_pass)) {
        Serial.println("Connected to MQTT broker");
      } else {
        delay(5000);
      }
    }
  }

  void loop() {
    if (!client.connected()) {
      reconnect();
    }
    client.loop();

   ////////======= float h = dht.readHumidity();
   ////////// float t = dht.readTemperature();
    // t=23.5;
    Serial.println(t);
    if (isnan(h) || isnan(t)) {
      Serial.println("Failed to read from DHT sensor!");
      return;
    }

    // Publish data
    client.publish(topic_temperature, String(t).c_str());
    client.publish(topic_humidity, String(h).c_str());

    delay(2000);  // Wait for 2 seconds
  }