Electron tracker (parse.ino)

// This #include statement was automatically added by the Spark IDE.
#include "Adafruit_GPS.h"
#include <math.h>

#define mySerial Serial1
Adafruit_GPS GPS(&mySerial);
  
   

// Set GPSECHO to 'false' to turn off echoing the GPS data to the Serial console
// Set to 'true' if you want to debug and listen to the raw GPS sentences. 
#define GPSECHO  false

// this keeps track of whether we're using the interrupt
// off by default!
boolean usingInterrupt = false;

#define APP_VERSION 10



byte bufferSize = 64;
byte bufferIndex = 0;
char buffer[65];
char c;

uint32_t timer;

void setup() {
    // 9600 NMEA is the default baud rate for Adafruit MTK GPS's- some use 4800
    GPS.begin(9600);
    mySerial.begin(9600);
    

    Serial.begin(115200);
    
       
  // uncomment this line to turn on RMC (recommended minimum) and GGA (fix data) including altitude
  GPS.sendCommand(PMTK_SET_NMEA_OUTPUT_RMCGGA);

  // Set the update rate
  GPS.sendCommand(PMTK_SET_NMEA_UPDATE_1HZ);   // 1 Hz update rate
  // For the parsing code to work nicely and have time to sort thru the data, and
  // print it out we don't suggest using anything higher than 1 Hz

  // Request updates on antenna status, comment out to keep quiet
  GPS.sendCommand(PGCMD_NOANTENNA);
  


  // the nice thing about this code is you can have a timer0 interrupt go off
  // every 1 millisecond, and read data from the GPS for you. that makes the
  // loop code a heck of a lot easier!


  delay(1000);
  // Ask for firmware version
  mySerial.println(PMTK_Q_RELEASE);
  timer = millis();
  Particle.publish("parse_tracker_geoloc", "{ status: \"started up! " + String(APP_VERSION) + "\"}", 60, PRIVATE );
  
//   IPAddress myIP = WiFi.localIP();
//   Particle.publish("MY_IP", 
//     String(myIP[0]) + "." + String(myIP[1]) + "." + String(myIP[2]) + "." + String(myIP[3]), 
//     60, PRIVATE );
}

void loop() {
   // in case you are not using the interrupt above, you'll
  // need to 'hand query' the GPS, not suggested :(
  if (! usingInterrupt) {
    // read data from the GPS in the 'main loop'
    char c = GPS.read();
    // if you want to debug, this is a good time to do it!
    if (GPSECHO)
      if (c) Serial.print(c);
  }
  
  // if a sentence is received, we can check the checksum, parse it...
  if (GPS.newNMEAreceived()) {
    // a tricky thing here is if we print the NMEA sentence, or data
    // we end up not listening and catching other sentences! 
    // so be very wary if using OUTPUT_ALLDATA and trytng to print out data
    //Serial.println(GPS.lastNMEA());   // this also sets the newNMEAreceived() flag to false
  
    if (!GPS.parse(GPS.lastNMEA()))   {
      // this also sets the newNMEAreceived() flag to false
      if (millis() - timer > 10000) {
          
        Particle.publish("parse_tracker_geoloc", "{ last: \"" + String(GPS.lastNMEA()) + "\"}", 60, PRIVATE );
        Particle.publish("parse_tracker_geoloc", "{ error: \"failed to parse\"}", 60, PRIVATE );
      }
      return;  // we can fail to parse a sentence in which case we should just wait for another
    }
  }

  // if millis() or timer wraps around, we'll just reset it
  if (timer > millis())  timer = millis();

  // approximately every 2 seconds or so, print out the current stats
  if (millis() - timer > 10000) {
    timer = millis(); // reset the timer
    
    Serial.print("\nTime: ");
    Serial.print(GPS.hour, DEC); Serial.print(':');
    Serial.print(GPS.minute, DEC); Serial.print(':');
    Serial.print(GPS.seconds, DEC); Serial.print('.');
    Serial.println(GPS.milliseconds);
    Serial.print("Date: ");
    Serial.print(GPS.day, DEC); Serial.print('/');
    Serial.print(GPS.month, DEC); Serial.print("/20");
    Serial.println(GPS.year, DEC);
    Serial.print("Fix: "); Serial.print((int)GPS.fix);
    Serial.print(" quality: "); Serial.println((int)GPS.fixquality); 
    
    //if (GPS.fix) 
    //{
      Serial.print("Location: ");
      Serial.print(GPS.latitude, 4); 
      Serial.print(GPS.lat);
      Serial.print(", "); 
      
      Serial.print(GPS.longitude, 4); 
      Serial.println(GPS.lon);
      
      Serial.print("Speed (knots): "); Serial.println(GPS.speed);
      Serial.print("Angle: "); Serial.println(GPS.angle);
      Serial.print("Altitude: "); Serial.println(GPS.altitude);
      Serial.print("Satellites: "); Serial.println((int)GPS.satellites);
      
      //TODO: BETTER +/- for longitude
      
      Particle.publish("parse_tracker_geoloc", 
        "{\"lat\": " + String(convertDegMinToDecDeg(GPS.latitude))
        + ", \"lon\": -" + String(convertDegMinToDecDeg(GPS.longitude)) 
        + ", \"speed\": " + String(GPS.speed)
        + ", \"satellites\": " + String((int)GPS.satellites)
        + " \"deviceid\": 6}",
        60, PRIVATE
      );
      
    //   Particle.publish("GPS", 
    //     + "{ q: " + String(GPS.fixquality) 
    //     + ", s: " + String((int)GPS.satellites)
    //     + " }",
    //     60, PRIVATE
    //   );
       
    //   Particle.publish("parse_tracker_geoloc", "{ \"lat\": \"24.2600\", \"lon\": \"-80.2600\", \"speed\": \"1.5\", \"deviceid\": \"6\" }");
  }
}
 
 
 //http://arduinodev.woofex.net/2013/02/06/adafruit_gps_forma/
 double convertDegMinToDecDeg (float degMin) {
  double min = 0.0;
  double decDeg = 0.0;
 
  //get the minutes, fmod() requires double
  min = fmod((double)degMin, 100.0);
 
  //rebuild coordinates in decimal degrees
  degMin = (int) ( degMin / 100 );
  decDeg = degMin + ( min / 60 );
 
  return decDeg;
}