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

DHTesp dhtSensor;
TempAndHumidity data;
const int DHT_PIN=15;

char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long myChannelNumber=2067849;
const char*myWriteAPIKey="WFGYP6039HX2AMU3";
int statusCode;

const int trig=18;
const int echo=21;

long duration;
long distance;



void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  pinMode(trig,OUTPUT);
  pinMode(echo,INPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  dhtSensor.setup(DHT_PIN,DHTesp::DHT22);

}

void loop() {
  Serial.println("Humi:"+String(data.humidity));
  Serial.println("Temp:"+String(data.temperature));
  Serial.println("------");
  digitalWrite(trig,LOW);
  delayMicroseconds(2);
  digitalWrite(trig,HIGH);
  delayMicroseconds(10);
  digitalWrite(trig,LOW);
  duration=pulseIn(echo,HIGH);
  distance=(duration*0.034/2)+1;
  Serial.println("Distance"+String(distance));

  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."); 
  }
  data=dhtSensor.getTempAndHumidity();
  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(1500);
  }
}