#include<DHTesp.h>
#include <WiFi.h>
#include<ThingSpeak.h>
const int pin=25;
DHTesp dhtsensor;
TempAndHumidity data;
const int trig=14;
const int echo=27;
float duration;
float distance;

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

unsigned long myChannelNumber=2474810;
const char* myWriteAPIKey="ASRG99RXLPP2HZS7";
int statusCode;

void setup() {
 pinMode(trig,OUTPUT);
  pinMode(echo, INPUT);
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
   dhtsensor.setup(pin,DHTesp::DHT22);
   
    WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  delay(1000);

}

void getwifi()
{
  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("\nConnected");
}
void loop() {
  getwifi();
  data=dhtsensor.getTempAndHumidity();
Serial.println("TEMP:"+String(data.temperature));
Serial.println("HUMID:"+String(data.humidity));
 
 
 
  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig, HIGH);
  delayMicroseconds(10);
  digitalWrite(trig, HIGH);
  duration=pulseIn(echo,HIGH);
  int 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 update successful");
  }
  else
  {
    Serial.println("Problem Writing data: HTTp error code:"+String(statusCode));
  }
  delay(15000);
}