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

// Replace with your network credentials
const char* ssid = "Raji";
const char* password ="samraji16";

// Replace with your ThingSpeak channel details
const char* server = "api.thingspeak.com";
const String apiKey = "2D9FOLL4G7M6P0IG";
const int fieldId = 1;

// Replace with your sensor details
#define DHTPIN 15      // Pin connected to the DHT sensor
#define DHTTYPE DHT11  // DHT sensor type (DHT11 or DHT22)
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(115200);

  // Connect to Wi-Fi
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(1000);
    Serial.println("Connecting to WiFi...");
  }
  Serial.println("Connected to WiFi");

  // Initialize DHT sensor
  dht.begin();
}

void loop() {
  // Wait a few seconds between measurements
  delay(2000);

  // Read temperature from sensor
  float temperature = dht.readTemperature();
  if (isnan(temperature)) {
    Serial.println("Failed to read temperature from DHT sensor!");
    return;
  }

  // Create the URL for ThingSpeak update
  String url = "http://" + String(server) + "/update?api_key=" + apiKey + "&field" + String(fieldId) + "=" + String(temperature);

  // Send HTTP GET request to ThingSpeak
  HTTPClient http;
  http.begin(url);
  int httpCode = http.GET();
  if (httpCode > 0) {
    Serial.printf("HTTP response code: %d\n", httpCode);
    if (httpCode == HTTP_CODE_OK) {
      String payload = http.getString();
      Serial.println("Response: " + payload);
    }
  } else {
    Serial.println("Failed to send HTTP request");
  }
  http.end();
}