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

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

unsigned long myChannelNumber=2286454;
const char* myWriteAPIKey="U4JKOT5ZG7RG9LZZ";
int statusCode;

const int sda = 13;
const int trig = 15;
const int echo = 2;
DHTesp dhtsensor;
TempAndHumidity data;

float duration;
float distance;


void setup() {
  Serial.begin(115200);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  dhtsensor.setup(sda,DHTesp::DHT22);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() {
  if(WiFi.status()!=WL_CONNECTED)
  {
     Serial.print("connecting");
     while(WiFi.status()!=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      Serial.print(".");
      delay(5000);
    }
  }
  Serial.println("\nConnected");
  distance = getdistance();
  data = dhtsensor.getTempAndHumidity();
  Serial.println("Temp :"+String(data.temperature));
  Serial.println("Humi :"+String(data.humidity));
  Serial.println("Distance :"+String(distance));
  delay(1000);

  ThingSpeak.setField(1,data.temperature);
  ThingSpeak.setField(2,data.humidity);
  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);
}


long getdistance()
{
  digitalWrite(trig, LOW);
  delayMicroseconds(5);
  digitalWrite(trig, HIGH);
  delay(10);
  digitalWrite(trig, LOW);
  duration = pulseIn(echo,HIGH);
  return(duration*0.034/2+1);
}