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


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

char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber =2067925;
const char * myWriteAPIKey ="137ASRKM5SU9JLRP";
int statusCode;

const int trig = 13;
const int echo = 12;

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