Weather Comparison Station with GPS, Temp, and Humidity

// This #include statement was automatically added by the Particle IDE.
#include <TinyGPS-gngga.h>

// This #include statement was automatically added by the Particle IDE.
#include <Particle-GPS.h>

// This #include statement was automatically added by the Particle IDE.
#include <PietteTech_DHT.h>

// This #include statement was automatically added by the Particle IDE.
#include <PietteTech_DHT.h>

// This #include statement was automatically added by the Particle IDE.
#include <Particle-GPS.h>

// This #include statement was automatically added by the Particle IDE.
#include <Particle-GPS.h>

// This #include statement was automatically added by the Particle IDE.
#include <TinyGPS-gngga.h>


#include "PietteTech_DHT.h" 

#define DHTTYPE  DHT22       // Sensor type DHT11/21/22
#define DHTPIN   D3   
// Copyright © 2016-2017 Daniel Porrey. All Rights Reserved.
//
// This file is part of the Particle.GPS library.
// 
// Particle.GPS library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// 
// Particle.GPS library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// 
// You should have received a copy of the GNU General Public License
// along with Particle.GPS library. If not, 
// see http://www.gnu.org/licenses/.
//
#include "Particle-GPS.h"

// ***
// *** Create a Gps instance. The RX an TX pins are connected to
// *** the TX and RX pins on the electron (Serial1).
// ***
Gps _gps = Gps(&Serial1);

// ***
// *** Create a timer that fires every 1 ms to capture
// *** incoming serial port data from the GPS.
// ***
Timer _timer = Timer(1, onSerialData);


PietteTech_DHT DHT(DHTPIN, DHTTYPE);
int n;

void setup()
{
    Serial.begin(9600);
  while (!Serial.available() && millis() < 30000) {
    Serial.println("Press any key to start.");
    Particle.process();
    delay(10000);
  }
  Serial.println("DHT Simple program using DHT.acquireAndWait");
  Serial.print("LIB version: ");
  Serial.println(DHTLIB_VERSION);
  Serial.println("---------------");
  DHT.begin();
  // ***
  // *** Initialize the USB Serial for debugging.
  // ***
  Serial.begin();
  Serial.println("Initializing...");

  // ***
  // *** Initialize the GPS.
  // ***
  _gps.begin(9600);

  // ***
  // *** Request that all data be sent.
  // ***
  _gps.sendCommand(PMTK_SET_NMEA_OUTPUT_ALLDATA);

  // ***
  // *** Start the timer.
  // ***
  _timer.start();
}

void onSerialData()
{
  _gps.onSerialData();
}

void loop()
{
  // ***
  // *** This will display the strings received from
  // *** the GPS unit. Some may be empty if the GPS
  // *** is not set to send all data.
  // ***
  Serial.print("Data[0] = "); Serial.println(_gps.data[0]);
  Serial.print("Data[1] = "); Serial.println(_gps.data[1]);
  Serial.print("Data[2] = "); Serial.println(_gps.data[2]);
  Serial.print("Data[3] = "); Serial.println(_gps.data[3]);
  Serial.print("Data[4] = "); Serial.println(_gps.data[4]);
  Serial.print("Data[5] = "); Serial.println(_gps.data[5]);
  Serial.print("Data[6] = "); Serial.println(_gps.data[6]);
  Particle.publish("Brian_GPS", String(_gps.data[0]), PUBLIC);
  Particle.publish("Brian_GPS", String(_gps.data[1]), PUBLIC);
  
  
  Serial.print("\n");
  Serial.print(n);
  Serial.print(": Retrieving information from sensor: ");
  Serial.print("Read sensor: ");

  int result = DHT.acquireAndWait(1000);

  switch (result) {
  case DHTLIB_OK:
    Serial.println("OK");
    break;
  case DHTLIB_ERROR_CHECKSUM:
    Serial.println("Error\n\r\tChecksum error");
    break;
  case DHTLIB_ERROR_ISR_TIMEOUT:
    Serial.println("Error\n\r\tISR time out error");
    break;
  case DHTLIB_ERROR_RESPONSE_TIMEOUT:
    Serial.println("Error\n\r\tResponse time out error");
    break;
  case DHTLIB_ERROR_DATA_TIMEOUT:
    Serial.println("Error\n\r\tData time out error");
    break;
  case DHTLIB_ERROR_ACQUIRING:
    Serial.println("Error\n\r\tAcquiring");
    break;
  case DHTLIB_ERROR_DELTA:
    Serial.println("Error\n\r\tDelta time to small");
    break;
  case DHTLIB_ERROR_NOTSTARTED:
    Serial.println("Error\n\r\tNot started");
    break;
  default:
    Serial.println("Unknown error");
    break;
}
  delay(1000);
  
  
  Serial.print("Humidity (%): ");
  Serial.println(DHT.getHumidity(), 2);

  Serial.print("Temperature (oC): ");
  Serial.println(DHT.getCelsius(), 2);

  Serial.print("Temperature (oF): ");
  Serial.println(DHT.getFahrenheit(), 2);

  Serial.print("Temperature (K): ");
  Serial.println(DHT.getKelvin(), 2);
  
    int temp_c = (DHT.getCelsius()); // read DHT sensor
    int temp_f = (DHT.getFahrenheit()); // read DHT sensor
    int humid = (DHT.getHumidity()); // read DHT sensor
  
   // Send publish from particle...
    Particle.publish("T_C", String(temp_c),60,PUBLIC);
    Particle.publish("T_F", String(temp_f),60,PUBLIC);
    Particle.publish("H_%", String(humid),60,PUBLIC);

  n++;
  delay(10000);
}