#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=2078954;
const char * myWriteAPIKey="GKAFZ5PTWO3MQJZN";
const int trig=14;
const int echo=12;
long duration;
long distance;
int statusCode;
void setup()
{
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN ,DHTesp::DHT22);

  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(Client);

}
void loop()
{
  data=dhtSensor.getTempAndHumidity();
  Serial.println("Humidity:"+String(data.humidity));
  Serial.println("Temperature:"+String(data.temperature));
  Serial.println("-------------");
  delay(1000);
  digitalWrite(trig, LOW);
  delayMicroseconds(2);
  digitalWrite(trig, HIGH);
  delayMicroseconds(30);
  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("\nConected.");
    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 successfull.");
    }
    else
    {
      Serial.println("Problem writing data. HTTP error code:"+String(statusCode));
    }
    delay(15000);
  
  }
}