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

char ssid[] = "Wokwi-GUEST";
char pass[] = "";
WiFiClient client;
unsigned long myChannelNumber = 2078916;
const char*myWriteAPIKey = "KYDDHWGU9HQW71OO";
int statusCode;


const int dhtpin = 15;
DHTesp dhtsensor;
TempAndHumidity data;
const int trig = 4;
const int echo = 2;
long duration;
int distance;
void setup() {
  dhtsensor.setup(dhtpin, DHTesp::DHT22);
  Serial.begin(115200);
  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));

  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);
}