TK06a GPS Tracker Protocol : Long/Lat Format

Question 1

This format is DM like in NMEA RMC message, but with a missing leading 0:

given longitude: 10341.175280 E

The first 3 digits are degrees: 103
Then the rest is minutes: 41.175280
This now is fomrat "DM" Degrees and decimal minutes.
Google uses "DEG" (Decimal degrees)
convert: 103 + 41.175280 / 60.0 = 103.686254 (DEG = degrees + minutes / 60.0)
wich fits perfectly to your location

Now it is a bit strange:
It should read "0121.322800" not "121.322800"
But then similar to above but since latitude is limited to two digits:
The first 2 digits are always degrees: 01
Then the rest is minutes: 21.322800
same formala as above: lat= 1 + 21.322800 / 60.0 = 1,35538

finally: if W or S, multiply the deg value with -1 (In your case it is N and E, so it stays as it is - positive)

This format looks partly like the NMEA RMC sentence

Question 2

I think you want to make this work with OpenGTS.

So here what i done to work:(Note i dont need the tk10x devices so i overwrited the files, you can create another class if you want)

go to $GTS_HOME/src/org/opengts/servers/tk10x

and change the TrackServer.java with this code

I writed a new parseInsertFunction

package org.opengts.servers.tk10x;

import java.lang.*;
import java.util.*;
import java.io.*;
import java.net.*;
import java.sql.*;

import org.opengts.util.*;
import org.opengts.db.*;
import org.opengts.db.tables.*;

public class TrackServer
{

// ------------------------------------------------------------------------
// initialize runtime configuration

public static void configInit()
{
    DCServerConfig dcs = Main.getServerConfig();
    if (dcs != null) {
        TrackServer.setTcpIdleTimeout(   dcs.getTcpIdleTimeoutMS(      Constants.TIMEOUT_TCP_IDLE   ));
        TrackServer.setTcpPacketTimeout( dcs.getTcpPacketTimeoutMS( Constants.TIMEOUT_TCP_PACKET ));
        TrackServer.setTcpSessionTimeout(dcs.getTcpSessionTimeoutMS(Constants.TIMEOUT_TCP_SESSION));
        TrackServer.setUdpIdleTimeout(   dcs.getUdpIdleTimeoutMS(   Constants.TIMEOUT_UDP_IDLE   ));
        TrackServer.setUdpPacketTimeout( dcs.getUdpPacketTimeoutMS( Constants.TIMEOUT_UDP_PACKET ));
        TrackServer.setUdpSessionTimeout(dcs.getUdpSessionTimeoutMS(Constants.TIMEOUT_UDP_SESSION));
    }
}

// ------------------------------------------------------------------------
// Start TrackServer (TrackServer is a singleton)

private static TrackServer trackServerInstance = null;

/* start TrackServer on array of ports */
public static TrackServer startTrackServer(int tcpPorts[], int udpPorts[], int commandPort)
    throws Throwable
{
    if (trackServerInstance == null) {
        trackServerInstance = new TrackServer(tcpPorts, udpPorts, commandPort);
    } else {
        //Print.logError("TrackServer already initialized!");
    }
    return trackServerInstance;
}

public static TrackServer getTrackServer()
{
    return trackServerInstance;
}

// ------------------------------------------------------------------------
// TCP Session timeouts

/* idle timeout */
private static long tcpTimeout_idle     = Constants.TIMEOUT_TCP_IDLE;
public static void setTcpIdleTimeout(long timeout)
{
    TrackServer.tcpTimeout_idle = timeout;
}
public static long getTcpIdleTimeout()
{
    return TrackServer.tcpTimeout_idle;
}

/* inter-packet timeout */
private static long tcpTimeout_packet   = Constants.TIMEOUT_TCP_PACKET;
public static void setTcpPacketTimeout(long timeout)
{
    TrackServer.tcpTimeout_packet = timeout;
}
public static long getTcpPacketTimeout()
{
    return TrackServer.tcpTimeout_packet;
}

/* total session timeout */
private static long tcpTimeout_session  = Constants.TIMEOUT_TCP_SESSION;
public static void setTcpSessionTimeout(long timeout)
{
    TrackServer.tcpTimeout_session = timeout;
}
public static long getTcpSessionTimeout()
{
    return TrackServer.tcpTimeout_session;
}

// ------------------------------------------------------------------------
// UDP Session timeouts

/* idle timeout */
private static long udpTimeout_idle     = Constants.TIMEOUT_UDP_IDLE;
public static void setUdpIdleTimeout(long timeout)
{
    TrackServer.udpTimeout_idle = timeout;
}
public static long getUdpIdleTimeout()
{
    return TrackServer.udpTimeout_idle;
}

/* inter-packet timeout */
private static long udpTimeout_packet   = Constants.TIMEOUT_UDP_PACKET;
public static void setUdpPacketTimeout(long timeout)
{
    TrackServer.udpTimeout_packet = timeout;
}
public static long getUdpPacketTimeout()
{
    return TrackServer.udpTimeout_packet;
}

/* total session timeout */
private static long udpTimeout_session  = Constants.TIMEOUT_UDP_SESSION;
public static void setUdpSessionTimeout(long timeout)
{
    TrackServer.udpTimeout_session = timeout;
}
public static long getUdpSessionTimeout()
{
    return TrackServer.udpTimeout_session;
}

// ------------------------------------------------------------------------
// ------------------------------------------------------------------------

// TCP port listener threads
private java.util.List<ServerSocketThread> tcpThread = new Vector<ServerSocketThread>();

// UDP port listener threads
private java.util.List<ServerSocketThread> udpThread = new Vector<ServerSocketThread>();

// Command port listener thread
private ServerSocketThread cmdThread = null;
private DatagramSocket     udpSocket = null;

// ------------------------------------------------------------------------

/* private constructor */
private TrackServer(int tcpPorts[], int udpPorts[], int commandPort)
    throws Throwable
{
    int listeners = 0;

    // Start TCP listeners
    if (!ListTools.isEmpty(tcpPorts)) {
        for (int i = 0; i < tcpPorts.length; i++) {
            int port = tcpPorts[i];
            if (ServerSocketThread.isValidPort(port)) {
                try {
                    this._startTCP(port);
                    listeners++;
                } catch (java.net.BindException be) {
                    Print.logError("TCP: Error binding to port: %d", port);
                }
            } else {
                throw new Exception("TCP: Invalid port number: " + port);
            }
        }
    }

    // Start UDP listeners
    if (!ListTools.isEmpty(udpPorts)) {
        for (int i = 0; i < udpPorts.length; i++) {
            int port = udpPorts[i];
            if (ServerSocketThread.isValidPort(port)) {
                try {
                    ServerSocketThread sst = this._startUDP(port);
                    if (this.udpSocket == null) {
                        this.udpSocket = sst.getDatagramSocket();
                    }
                    listeners++;
                } catch (java.net.BindException be) {
                    Print.logError("UDP: Error binding to port: %d", port);
                }
            } else {
                throw new Exception("UDP: Invalid port number: " + port);
            }
        }
    }

    /* do we have any active listeners? */
    if (listeners <= 0) {
        Print.logWarn("No active device communication listeners!");
    }

}

// ------------------------------------------------------------------------

/* start TCP listener */
private void _startTCP(int port)
    throws Throwable
{
    ServerSocketThread sst = null;

    /* create server socket */
    try {
        sst = new ServerSocketThread(port);
    } catch (Throwable t) { // trap any server exception
        Print.logException("ServerSocket error", t);
        throw t;
    }

    /* initialize */
    sst.setTextPackets(Constants.ASCII_PACKETS);
    sst.setBackspaceChar(null); // no backspaces allowed
    sst.setLineTerminatorChar(Constants.ASCII_LINE_TERMINATOR);
    sst.setIgnoreChar(Constants.ASCII_IGNORE_CHARS);
    sst.setMaximumPacketLength(Constants.MAX_PACKET_LENGTH);
    sst.setMinimumPacketLength(Constants.MIN_PACKET_LENGTH);
    sst.setIdleTimeout(TrackServer.tcpTimeout_idle);         // time between packets
    sst.setPacketTimeout(TrackServer.tcpTimeout_packet);     // time from start of packet to packet completion
    sst.setSessionTimeout(TrackServer.tcpTimeout_session);   // time for entire session
    sst.setTerminateOnTimeout(Constants.TERMINATE_ON_TIMEOUT);
    sst.setClientPacketHandlerClass(TrackClientPacketHandler.class);
    sst.setLingerTimeoutSec(Constants.LINGER_ON_CLOSE_SEC);

    /* start thread */
    Print.logInfo("Starting TCP listener thread on port " + port + " [timeout=" + sst.getSessionTimeout() + "ms] ...");
    sst.start();
    this.tcpThread.add(sst);

}

// ------------------------------------------------------------------------

/* start UDP listener */
private ServerSocketThread _startUDP(int port)
    throws Throwable
{
    ServerSocketThread sst = null;

    /* create server socket */
    try {
        sst = new ServerSocketThread(ServerSocketThread.createDatagramSocket(port));
    } catch (Throwable t) { // trap any server exception
        Print.logException("ServerSocket error", t);
        throw t;
    }

    /* initialize */
    sst.setTextPackets(Constants.ASCII_PACKETS);
    sst.setBackspaceChar(null); // no backspaces allowed
    sst.setLineTerminatorChar(Constants.ASCII_LINE_TERMINATOR);
    sst.setIgnoreChar(Constants.ASCII_IGNORE_CHARS);
    sst.setMaximumPacketLength(Constants.MAX_PACKET_LENGTH);
    sst.setMinimumPacketLength(Constants.MIN_PACKET_LENGTH);
    sst.setIdleTimeout(TrackServer.udpTimeout_idle);
    sst.setPacketTimeout(TrackServer.udpTimeout_packet);
    sst.setSessionTimeout(TrackServer.udpTimeout_session);
    sst.setTerminateOnTimeout(Constants.TERMINATE_ON_TIMEOUT);
    sst.setClientPacketHandlerClass(TrackClientPacketHandler.class);

    /* start thread */
    Print.logInfo("Starting UDP listener thread on port " + port + " [timeout=" + sst.getSessionTimeout() + "ms] ...");
    sst.start();
    this.udpThread.add(sst);
    return sst;

}

public DatagramSocket getUdpDatagramSocket()
{
    return this.udpSocket;
}

// ------------------------------------------------------------------------

}`

and in Constant.java find 'ASCII_LINE_TERMINATOR[] ' constant declaration and add '000' to with

public static final int     ASCII_LINE_TERMINATOR[]     = new int[] { 
    // this list has been construction by observation of various data packets
    0x00, 0xFF, 0xCE, '\0', '\n', '\r', ')', ';',000
};

after this cd $GTS_HOME ant tk10x bin/runserver.sh -s tk10x

This should do the trick

And here is a link to the package i created

https://anonfiles.com/file/0aae22ccb3822618fb693cd667283b18