#include "DHTesp.h"
#include <ThingSpeak.h>
#include <WiFi.h>
DHTesp dhtsensor;
TempAndHumidity data;
const int pin = 15;
const int tri =13;
const int eco =12;
  long dur;
  float dis;
unsigned long myChannelNumber = 2098178;
const char*myWriteAPIKey = "EUC6TBL2MIUV3LW5";
int statusCode;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;

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

void loop() 
{
  if(WiFi.status() !=WL_CONNECTED)
  {
    Serial.print("Attempting to connect");
    while(WiFi.status() !=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      for(int i=0;i<5;i++)
      {
        Serial.print(".");
        delay(1000);
      }
    }
    Serial.println("\nConnected.");
  }
  digitalWrite(tri, LOW);
  delayMicroseconds(2);
  digitalWrite(tri, HIGH);
  delayMicroseconds(10);
  digitalWrite(tri, LOW);
  dur=pulseIn(eco,HIGH);
  dis=(dur*0.034/2)+1;
  Serial.println("distance : " + String(dis));
  data = dhtsensor.getTempAndHumidity();
  Serial.println("Humi : " +String(data.humidity));
  Serial.println("Temp : " +String(data.temperature));
  Serial.println("_______________"); 
  ThingSpeak.setField(1,dis);
  ThingSpeak.setField(2,data.temperature);
  ThingSpeak.setField(3,data.humidity);
  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(10000);
}