#include <WiFi.h>
# include<DHTesp.h>
#include <ThingSpeak.h>
char ssid[] ="Wokwi-GUEST";
char pass[] ="";
int trigger=14;
 int echo=12;
 float distance;
 WiFiClient client;
 long myChannelNumber =   2621931;
 const char * myWriteAPIKey = "XQVJWMRK0G2G0LXF";
 int statusCode;

DHTesp uma;
TempAndHumidity data;



void setup() {
  Serial.print("WIFI");
  WiFi.mode(WIFI_STA);
  
    Serial.begin(115200);
pinMode(trigger, OUTPUT);
pinMode(echo, INPUT);
pinMode(17, OUTPUT);

  Serial.begin(115200);
  Serial.println("DHT22 program");
  uma.setup(18,DHTesp::DHT22);
  ThingSpeak.begin(client);
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}
int ultraperformance(){
    digitalWrite(trigger, LOW);
  delay(10);
  digitalWrite(trigger, HIGH);
  delay(100);
  digitalWrite(trigger, LOW);
  distance=pulseIn(echo,HIGH);
  return(distance*0.034/2)+1;
  
}
void loop() {
  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(ultraperformance());
   if(ultraperformance()>=200)
  {
   digitalWrite(17, HIGH);
  }
  else
  {
    digitalWrite(17, LOW);
  }
    Serial.println("Humi : " + String(data.humidity));
  Serial.println("temp : " + String(data.temperature));
  Serial.println("-----------------");
  delay(1000);
   ThingSpeak.setField(1, data.temperature);
   ThingSpeak.setField(2, data.humidity);
    ThingSpeak.setField(3, distance);

  statusCode = ThingSpeak.writeFields(myChannelNumber,myWriteAPIKey);

if(statusCode == 200) { //successful writing code
Serial.println("Channel update successful.");
}
else {
Serial.println("Problem Writing data. HTTP error code :" +
String(statusCode));
}
  delay(10); // this speeds up the simulation
}