#include <WiFi.h>
#include <ThingSpeak.h>
#include "DHTesp.h"
DHTesp dhtSensor;
TempAndHumidity data;
const int DHT_PIN=15;

const int trig=2;
const int echo=4;

long duration;
long distance;

int statuscode;
//wifi setup
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long mychannelNumber=2446237;
const char * myWriteAPIKey="DYTK1XIML154PRZN";

void setup() {
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN,DHTesp::DHT22);
    pinMode(trig,OUTPUT);
    pinMode(echo, INPUT);
  
    WiFi.mode(WIFI_STA);
    ThingSpeak.begin(client)
;
}

void loop() {
   data= dhtSensor.getTempAndHumidity();
  Serial.println("Temperature :" + String(data.temperature,2)+"°C");
  Serial.println("Humidity :" + String(data.humidity,1)+"%");
  Serial.println("...");

  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, LOW);

  duration= pulseIn(echo,HIGH);
  distance=(duration*0.034/2)+ 1;
  Serial.println("Distance :"+ String(distance));
 
 if(WiFi.status() !=WL_CONNECTED)
{
  Serial.print("Attempting to connect");
  while(WiFi.status() !=WL_CONNECTED)
  {
    WiFi.begin(ssid,pass);
    Serial.print(".");
    delay(5000);
  
  }
  Serial.println("\nConnected.");
  }

ThingSpeak.setField(1,data.temperature);
ThingSpeak.setField(2,data.humidity);
ThingSpeak.setField(3,distance);
statuscode=ThingSpeak.writeFields(mychannelNumber,myWriteAPIKey);
if(statuscode==200){
  Serial.println("channel update successfully");
    }
else{
  Serial.println("Problem Writing data. HTTP error code:" + String(statuscode));
}
delay(15000);

}