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

const int tem=15;
const int tri=13;
const int ech=12;
long dur;
float dis;
DHTesp dhtSensor;
TempAndHumidity data;
const int DHT_PIN = 15;
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long mychannelnumber = 2067577;
const char * myWriteAPIKey = "6EV4VJEM23TR6EO2";
int statusCode;


void setup() {
  // put your setup cod here, to run once:
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  pinMode(tri, OUTPUT);
  pinMode(ech, INPUT);
  dhtSensor.setup(tem,DHTesp::DHT22);
}

void loop() {
  dis = getdistance();
  data=dhtSensor.getTempAndHumidity();
    if(WiFi.status()!= WL_CONNECTED)
    {
      Serial.println("Attempting to connect");
        while(WiFi.status()!= WL_CONNECTED)
        {
          WiFi.begin(ssid,pass);
          Serial.print(".");
          delay(3000);
        }
      Serial.println("\nConnected");
    }
  Serial.println("Hum: "+String(data.humidity,1));
  Serial.println("Temp: "+String(data.temperature,2));
  Serial.println("Distance : "+ String(dis));
  Serial.println("---------------------");
  delay(2000); // this speeds up the simulation

  ThingSpeak.setField(1,data.humidity);
  ThingSpeak.setField(2,data.temperature);
  ThingSpeak.setField(3,dis);
  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(4000);
}

long getdistance()
{
  digitalWrite(tri, LOW);
  delayMicroseconds(2);
  digitalWrite(tri, HIGH);
  delay(10);
  digitalWrite(tri, LOW);
  dur= pulseIn(ech,HIGH);
  return (dur*0.034/2+1);
}