#include <WiFi.h>
#include <ThingSpeak.h>
#include "DHTesp.h"
DHTesp dhtSensor;
TempAndHumidity data;
const int DHT_PIN=2;

char ssid[]="Wokwi-GUEST";
char pass[]="";
WiFiClient client;
unsigned long myChannelNumber=  2625020;
unsigned long myChannelNumber=MWA0000034447590;
const char * myWriteAPIKey="5AU9LIH4HTN09SEU";


const int trig=2;
const int echo=1;

long duration;
float distance;

int statusCode;
const int RELAY_PIN=4;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  dhtSensor.setup(DHT_PIN, DHTesp::DHT22);
  pinMode(trig, OUTPUT);
  pinMode(echo, INPUT);
  WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
}

void loop() {
  data=dhtSensor.getTempAndHumidity();
  Serial.println("humi:"+String(data.humidity));
  Serial.println("temp"+String(data.temperature));
  
  delay(1000);
  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));
  Serial.println("---------");
  if(WiFi.status()!=WL_CONNECTED)
  {
    Serial.print("attempt to connect");
    while(WiFi.status()!=WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      Serial.println(".");
      delay(5000);
    }
    Serial.println("\n connected");
  }
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");
}
else
{
 Serial.println("problem writing data");
}
delay(15000);
}