#include <wiFi.h>
#include <ThingSpeak.h>
#include "DHTesp.h"


DHTesp dhtsensor;
TempAndHumidity data;
const int DHT_PIN =13;//use only 15 else it wont work
const ssid[] = "wokwi-GUST"; 
char pass [] ="";
wiFiClient client;
unsigned long my channelNumber = 2251208;
const char * myWriteAPIkey = "96A6UF10O9KSXHML";
const int trig =2;
const int echo =4;
long duration;
long distance;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  dhtsensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  Serial.println("Hello, ESP32!");
}

void loop() {
  data=dhtsensor.getTempAndHumidity();
  Serial.println("Temperature: " + String(data.temperature,2) + "°C");
  Serial.println("Humidity: " + String(data.humidity,1) + "%");
  Serial.println("----");
  delay(1000);
  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);
  duration =pulseIn(echo,HIGH);
  //serial.println(duration);
  distance = (duration * 0.034/2)  + 1;
  Serial.println("distance" + String(distance));
  delay(1000);
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  if(WiFi.status() != WL_CONNECTED)
  { 
    Serial.print("Attempting to connect");
    while(WiFi.status() != WL_CONNECTED)
    {WiFi.begin(ssid , pass);
    delay(5000);
    }
    Serial.println("\nConnected.");
  }
ThingSpeak.setField(1,data.temprature);
ThingSpeak.setField(2,data.humidity);
ThingSpeak.setField(3,distance);
statusCode= ThingSpeak.writeFields(mychannelNumber, myWriteAPIkey);
if(statusCode == 200) { //Successfull writing code
Serial println("Channel update succcessful.");
}
else{
  Serial.println("Problem Writing data. HTTP error code:" + String );
}
delay(15000);
}