#include<WiFi.h>
#include<ThingSpeak.h>
#include <DHTesp.h>
DHTesp dhtsensor;
TempAndHumidity data;
const int DHT_PIN=15;
const int tri=13;
const int echo=12;
float distance;
long dur;
char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long myChannelNumber=2089322;
const char * myWriteAPIKey="222W9BD6PKDQ4EIL";;
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(tri, OUTPUT);
  pinMode(echo, INPUT);
}
long getdistance(){
  digitalWrite(tri, LOW);
  delayMicroseconds(2);
  digitalWrite(tri, HIGH);
  delayMicroseconds(10);
  digitalWrite(tri, LOW);
  dur=pulseIn(echo,HIGH);
  return(dur*0.034/2)+1;
  Serial.println(dur);
}

void loop() {
  data=dhtsensor.getTempAndHumidity();
  
  if(WiFi.status()!=WL_CONNECTED){
    Serial.println("attempting to connected");
    while(WiFi.status()!=WL_CONNECTED){
      WiFi.begin(ssid,pass);
      Serial.println(".");
      delay(5000);
    }
    Serial.println("\nconnected");

  }
  
  Serial.println("humidity:"+String(data.humidity,1));
  Serial.println("temperature:"+String(data.temperature,2));
  distance=getdistance();
  Serial.println("distance:"+String(distance));
  Serial.println("------------------");

  
  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); // this speeds up the simulation
}