#include "WiFi.h"
#include "ThingSpeak.h"
#include"DHTesp.h"

DHTesp dhtSensor;
TempAndHumidity data;
const int DHT_PIN=13;

char ssid[] ="Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber =2474271;
const char * myWriteAPIKey ="JE8A3QU1DZBTMMY6";

const int trig =25;
const int echo =26;

long duration;
float distance;

int statusCode;

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

}

void loop() 
{
   
  digitalWrite(trig, LOW);
  delayMicroseconds(2);   
  digitalWrite(trig,HIGH);
  delay(10);
  digitalWrite(trig, LOW);

duration = pulseIn(echo, HIGH);
distance = duration*0.034/2;
data=dhtSensor.getTempAndHumidity();

if(WiFi.status() !=WL_CONNECTED)
 {
Serial.println("Attempting to connect");
while(WiFi.status()!=WL_CONNECTED)
 {
  WiFi.begin(ssid,pass);
  Serial.print(".");
  delay(5000);
 }
 Serial.println("\nConnected.");
 }
 ThingSpeak.setField(1,data.humidity);
 ThingSpeak.setField(2,data.temperature);
 ThingSpeak.setField(3,distance);
 statusCode= ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);

 if(statusCode == 200)
 {
   Serial.println("channel update successfull");
 }
 else {
      Serial.println("Problem Writing data.HTTP error code :" + String(statusCode));
  }
  delay(15000);

}