#include<DHT.h>
//DHT sensor library import
#include<WiFi.h>
//Wifi library import
#include<ThingSpeak.h>
//Thingspeak library import

int trigPin = 25;
int echoPin = 12;
//ultrasonic declaration

int dhtPin = 15;
DHT dht22(dhtPin,DHT22);
//dht sensor declaration

char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
//wifi declaration

long int channelID = 2619894;
char writeApiKey[] = "NPI8Z60ARC26SWYB";
int statusCode;
//thingspeak declaration

void setup() {
  Serial.begin(115200);
  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);
  //ultrasonic sensor setup

  dht22.begin();
  //dht sensor setup

  WiFi.mode(WIFI_STA);
  WifiSetup();
  //wifi setup

  ThingSpeak.begin(client);
  //Thingspeak setup
}

void WifiSetup(){
  Serial.print("Attempting to connect");
  while(WiFi.status()!=WL_CONNECTED)
  {
    WiFi.begin(ssid,pass);
    Serial.print(".");
    delay(5000);
  }
  Serial.println("Connected");
}
void loop() {
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
  int duration = pulseIn(echoPin,HIGH);
  int distance = duration * 0.034/2;
  Serial.println("Distance: "+String(distance));
  //ultrasonic loop code

  int humidity = dht22.readHumidity();
  //return humidity
  int temp = dht22.readTemperature();
  //return temperature
  Serial.println("Humidity:"+String(humidity));
  Serial.println("Temperture: "+String(temp));
  //dht sensor loop code

  ThingSpeak.setField(1,humidity);
  ThingSpeak.setField(2,temp);
  ThingSpeak.setField(3,distance);
  statusCode = ThingSpeak.writeFields(channelID,writeApiKey);
  if(statusCode == 200)
    Serial.println("Data Uploaded");
  else
    Serial.println("Data Not Upload");
  delay(15000);
  //ThingSpeak loop code
}