#include <DHTesp.h>
#include <WiFi.h>
#include <ThingSpeak.h>
DHTesp dhtSensor;
TempAndHumidity data;
const int DHT_PIN = 15;
const int trig = 32;
const int echo = 33;
long duration,distance;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannalNumber = 2580577;
const char * myWriteAPIKey = "9LALESVXHPCCI5XL";
int statusCode;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  dhtSensor.setup(DHT_PIN,DHTesp::DHT22);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT); 
  
}

void loop() {
  // put your main code here, to run repeatedly:
  data=dhtSensor.getTempAndHumidity();
  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("Connected");
  }
  distance = getdistance();
  Serial.println("Humidity:" + String(data.humidity,1));
  Serial.println("Temperature:" + String(data.temperature,2));
  Serial.println("Distance:" + String(distance));
  Serial.println("-----------------------------------");
  delay(5000); // this speeds up the simulation
  ThingSpeak.setField(1,data.humidity);
  ThingSpeak.setField(2,data.temperature);
  ThingSpeak.setField(3,distance);
  statusCode = ThingSpeak.writeFields(myChannalNumber,myWriteAPIKey);
  if(statusCode == 200)
  {
    Serial.println("Channal update successful");
  }
  else{
    Serial.println("Problem writing data HTTP error code:" + String(statusCode));
  }
  delay(15000);
}
long getdistance()
{
digitalWrite(trig, LOW);
delayMicroseconds(2);
digitalWrite(trig, HIGH);
delay(1000);
digitalWrite(trig, LOW);
duration = pulseIn(echo, HIGH);
return(duration*0.034/2+1);
}