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

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

const int trigPin=15;
const int echoPin=2;
int duration;
int distance;

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

unsigned long myChannelNumber=2242087;
const char myWriteAPIKey[]="KRB4HRIFZEI7S4PY";
int statusCode;

void setup() {
  Serial.begin(115200);

  dhtSensor.setup(dhtPin,DHTesp::DHT22);

  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() {
    if(WiFi.status()!=WL_CONNECTED)
    {
      Serial.print("Attempting to connect");
      while(WiFi.status()!=WL_CONNECTED)
      {
        WiFi.begin(ssid,pass);
        Serial.println(".");
        delay(5000);
      }
    }
    Serial.println("Connected");
 
   data = dhtSensor.getTempAndHumidity();
   Serial.println(data.humidity);
   Serial.println(data.temperature);

   digitalWrite(trigPin, LOW);
   delayMicroseconds(2);
   digitalWrite(trigPin, HIGH);
   delayMicroseconds(10);
   digitalWrite(trigPin, LOW);
   duration = pulseIn(echoPin,HIGH);
   distance = duration*0.03405/2;
   Serial.println(distance);

  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 updated");
  }
  else{
    Serial.println("failed");
  }
  delay(15000);
}