// Example testing sketch for various DHT humidity/temperature sensors written by ladyada
// REQUIRES the following Arduino libraries:
// - DHT Sensor Library: https://github.com/adafruit/DHT-sensor-library
// - Adafruit Unified Sensor Lib: https://github.com/adafruit/Adafruit_Sensor

#include <DHT.h>
#include <WiFi.h>
#include <PubSubClient.h>
#include "ThingsBoard.h"

#define DHTPIN 4     // Digital pin connected to the DHT sensor
// Feather HUZZAH ESP8266 note: use pins 3, 4, 5, 12, 13 or 14 --
// Pin 15 can work but DHT must be disconnected during program upload.

// Uncomment whatever type you're using!
//#define DHTTYPE DHT11   // DHT 11
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321
//#define DHTTYPE DHT21   // DHT 21 (AM2301)

// Connect pin 1 (on the left) of the sensor to +5V
// NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
// to 3.3V instead of 5V!
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

// Initialize DHT sensor.
// Note that older versions of this library took an optional third parameter to
// tweak the timings for faster processors.  This parameter is no longer needed
// as the current DHT reading algorithm adjusts itself to work on faster procs.
DHT dht(DHTPIN, DHTTYPE);

//Wifi credential

const char *ssid="Wokwi-GUEST";
const char *password = "";

#define TOKEN "J9DarnGYVXBsTm1J2iWj"
//const char *mqtt_server = "thingsboard.cloud";
const char *thingsboardServer = "demo.thingsboard.io";

WiFiClient wifiClient;
PubSubClient client(wifiClient);
ThingsBoard tb(wifiClient);
int status = WL_IDLE_STATUS;


void setup() {
  Serial.begin(115200);
  Serial.println(F("DHTxx test!"));
  dht.begin();
  Serial.println("connect to : ");
  Serial.println(ssid);
  WiFi.begin(ssid,password);
  while(WiFi.status() != WL_CONNECTED)
  {
    delay(500);
    Serial.println("... ");
  }
  Serial.println("\n");
  Serial.println("IP Address : ");
  Serial.println(WiFi.localIP());
  Serial.println("\n");
  Serial.println("connect to : ");
  Serial.println(ssid);
  // client.setServer(mqtt_server,1883);
}

void loop() {
  // Wait a few seconds between measurements.
  if ( !tb.connected() ) {
    reconnect();
  }
  

  // Reading temperature or humidity takes about 250 milliseconds!
  // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  // Read temperature as Fahrenheit (isFahrenheit = true)
  float f = dht.readTemperature(true);

  // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }

  // Compute heat index in Fahrenheit (the default)
  float hif = dht.computeHeatIndex(f, h);
  // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);

  tb.sendTelemetryFloat("temperature", t);
  tb.sendTelemetryFloat("humidity", h);

  delay(1000);

  
  tb.loop();
}

void reconnect()
{
  while (!tb.connected()) {
    Serial.print("Connecting to ThingsBoard node ...");
    // Attempt to connect (clientId, username, password)
    if ( tb.connect(thingsboardServer, TOKEN) ) {
      Serial.println( "[DONE]" );
    } else {
      Serial.print( "[FAILED]" );
      Serial.println( " : retrying in 5 seconds" );
      // Wait 5 seconds before retrying
      delay( 5000 );
    }
  }
}