#include "DHTesp.h"
#include "WiFi.h"
#include "ThingSpeak.h"
char ssid[] = "Wokwi-GUEST" ;
char pass[] = "" ;
WiFiClient client;
long MyChannelNumber = 2580263;
char * myWriteAPIKey = "2JK2DY8E4XVK6RQH"; 
int statusCode;
DHTesp dhtsensor;
TempAndHumidity data;
int dht_pin = 25;
int trig =13;
int echo =14;
long di, du;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client); 
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  dhtsensor.setup(dht_pin,DHTesp::DHT22);
}
void loop() 
{
  // put your main code here, to run repeatedly:
  Conn(); //usrdef func
  Write();
  data = dhtsensor.getTempAndHumidity();
  Serial.println("Temp :" + String(data.temperature)+ " °C");
  Serial.println("Humid :" + String(data.humidity) + " g.m-3");
  di= getDistance();
  Serial.println(di);
  delay(10); // this speeds up the simulation
}
long getDistance()
{
  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig,HIGH);
  delayMicroseconds(40);
  digitalWrite(trig, LOW);
  du = pulseIn(echo,HIGH);
  long int a = du * 0.034/2;
  return (a);
}
void Conn()
{
  if(WiFi.status() != WL_CONNECTED)
  {
    Serial.println("Attempting to Connect.*.*.*.*.*.*..");
    while(WiFi.status() != WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      for(int i=0;i<5;i++)
      {
        Serial.println(".*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.");
        delay(1000);
      }
    }
    Serial.println("Connected");
  }
}
void Write()
{
  ThingSpeak.setField(1,data.temperature);
  ThingSpeak.setField(2,data.humidity);
  ThingSpeak.setField(3,di);
  statusCode = ThingSpeak.writeFields(MyChannelNumber,myWriteAPIKey);
  if(statusCode == 200)
  {
   Serial.println("Successfully Connected"); 
  }
  else
  {
    Serial.println("Error Connecting, because its" +String(statusCode)+ " error");
    delay(10000);
  }
}