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

#define DHTPIN 15       // GPIO15 for DHT11 in Wokwi
#define DHTTYPE DHT22   // DHT11 Sensor Type

DHT dht(DHTPIN, DHTTYPE);

const char* ssid = "Wokwi-GUEST"; // WiFi for Wokwi
const char* password = "";        // No password required
const char* server = "http://api.thingspeak.com/update";

String apiKey = "Y8WXN5J9YM93JRE4T"; // Replace with your API Key

void setup() {
    Serial.begin(115200);
    WiFi.begin(ssid, password);
   
    Serial.print("Connecting to WiFi");
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    Serial.println("\nConnected to WiFi");
   
    dht.begin();
}

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

    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.println(" °C");

    // Send data to ThingSpeak
    if (WiFi.status() == WL_CONNECTED) {
        HTTPClient http;
        String url = server + "?api_key=" + apiKey + "&field1=" + String(temperature);
       
        http.begin(url);
        int httpResponseCode = http.GET();
       
        if (httpResponseCode > 0) {
            Serial.println("Data sent to ThingSpeak successfully.");
        } else {
            Serial.println("Failed to send data.");
        }
       
        http.end();
    }
   
    delay(15000); // Send data every 15 seconds
}