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

WiFiClient client;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

unsigned long myChannelNumber = 2110931;
const char * myWriteAPIKey = "3ZW3N3XGQE7FJIVJ";

DHTesp dhtsensor;
TempAndHumidity data;
const int DHT_PIN = 15;
const int TRIG_PIN = 13;
const int ECO_PIN = 12;
long duration, distance;
int statusCode;

void setup() {
 Serial.begin(115200);
 WiFi.mode(WIFI_STA);
  ThingSpeak.begin(client);
  dhtsensor.setup(DHT_PIN, DHTesp::DHT22);

pinMode(TRIG_PIN, OUTPUT);
pinMode(ECO_PIN, INPUT);
}

void loop() {
  connectToCloud();
  computeData();
  writeData();
  delay(1000);
}
void connectToCloud(){
  if(WiFi.status()!= WL_CONNECTED)
  {
    Serial.print("Attempting to connect");
    while(WiFi.status() != WL_CONNECTED)
    {
      WiFi.begin(ssid,pass);
      for (int i=0;i<5;i++){
      Serial.print(".");
      delay(1000);
     }
    }
    Serial.println("\nconnected.");
  }
}
void computeData()
{
  distance = getDistanceINentimeters();
  data = dhtsensor.getTempAndHumidity();
  Serial.println("___________________");
  Serial.println("Humi: "+ String(data.humidity));
  Serial.println("Temp: "+ String(data.temperature));
  Serial.println("Dist: "+ String(distance));
  Serial.println("------------------");
}
void writeData()
{
  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 Updated");
   else
   Serial.println("Problem in Updating");
   String(statusCode);
   delay(15000);
}
long getDistanceINentimeters()
{
   digitalWrite(TRIG_PIN,LOW);
   delayMicroseconds(2);
   digitalWrite(TRIG_PIN,HIGH);
   delayMicroseconds(10);
   digitalWrite(TRIG_PIN,LOW);
   duration = pulseIn(ECO_PIN , HIGH);
   return(duration * 0.034/2);
   
}