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

//data for DHT22
DHTesp Sensor;
TempAndHumidity data;
const int DHT_PIN = 15;

//data for ultrasonic sensor
const int triger = 26;
const int echo = 14;

long duration;
long distance;

//data for wifi
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long MyCno = 2098570;
const char * MyWAPIK = "OB0EO3H0TKQYVTTV";

int statusCode;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);

  //DHT22 coding
  Sensor.setup(DHT_PIN,DHTesp :: DHT22);

  //ultrasonic sensor coding
  pinMode(triger, OUTPUT);
  pinMode(echo, INPUT);

  //wifi coding
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  }

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation

  //data for ultrasonic sensor
  delay(100);
  digitalWrite(triger, LOW);
  delayMicroseconds(20);
  digitalWrite(triger, HIGH);
  delayMicroseconds(20);
  digitalWrite(triger, LOW);

  duration=pulseIn(echo,HIGH);
  distance = (duration*0.034/2)+1;

  //codings for DHT22
  data = Sensor.getTempAndHumidity();

  Serial.println("Humidity : " +String(data.humidity));
  Serial.println("Temperature : " +String(data.temperature));
  Serial.println("Distance : " +String(distance));
  Serial.println("------------------------");
  delay(1000);

  //wifi coding
  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("\n Connected");
  }
  ThingSpeak.setField(1,data.humidity);
  ThingSpeak.setField(2,data.temperature);
  ThingSpeak.setField(3,distance);
  statusCode = ThingSpeak.writeFields(MyCno,MyWAPIK);

  if(statusCode==200)
  {
    Serial.println("Channel Update Successful");
  }
  else
  {
    Serial.println("Problem Writing Data.HTTP error code : " +String(statusCode));
  }
  delay(15000);
}