#include <WiFi.h>
#include <Arduino.h>

#include "DHT.h"

#define DHTPIN 18  
#define DHTTYPE DHT22 
DHT dht(DHTPIN, DHTTYPE);
float t;
float h;
String apiKey = "WAZ0MMO2QFIGC2CA"; //change

const char* server = "api.thingspeak.com";
WiFiClient client;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  delay(100);
WiFi.begin("Wokwi-GUEST", "", 6);
 while (WiFi.status() != WL_CONNECTED) {
    delay(250);
  }

  Serial.println("");
  Serial.println("WiFi connected");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
  dht.begin();
  

}

void loop() {
  // put your main code here, to run repeatedly:
  delay(1000);


  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();

  // Read temperature as Fahrenheit (isFahrenheit = true)
  float td = t - ((100 - h)/5);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  if (client.connect(server,80)) {

String postStr = apiKey;
postStr +="&field1=";
postStr += String(t);
postStr +="&field2=";
postStr += String(h);
postStr +="&field3=";
postStr += String(td);



client.print("POST /update HTTP/1.1\n");
client.print("Host: api.thingspeak.com\n");
client.print("Connection: close\n");
client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n");
client.print("Content-Type: application/x-www-form-urlencoded\n");
client.print("Content-Length: ");
client.print(postStr.length());
client.print("\n\n");
client.print(postStr);

delay(5000);

}

}