TK102 GPS server

Receive and parse GPS data from Xexun TK102 trackers.

The Xexun TK102 is a GPS device that can send coordinates over TCP to a server via GPRS. This Node.js script creates a TCP server that listens for GPRMC data, parse it and send the data to your post-process function. The parsed data is provided in a clean easy to use object, so you can easily store it in a database or push to a websocket server, etc.

• Example
• Prepare device
• Installation
• Settings
• Events
• Notes

Example

var server = require ('tk102');

// start server
server.createServer ({
  port: 1337
});

// incoming data, i.e. update a map
server.on ('track', function (gps) {
  updateMap (gps.geo.latitude, gps.geo.longitude);
});

Prepare device

Assuming your simcard has enough SMS and data credits and the TK102 is configured for your provider's APN, simply send adminip123456 IP PORT where obviously IP is the server's IP, PORT is the port to listen on and 123456 is your admin password. :) It cannot take hostnames as it has no dns features on board.

Activate sending coordinates: t030s003n123456

This tells the device to send its location AFTER each 30 seconds and no more than 3 times. 30 seconds is the minimum. Send t030s***n123456 to go on for infinity.

• s (seconds) can also be m (minutes) or h (hours)
• To end tracking send notn123456

Installation

Stable: npm install tk102

Develop: npm install fvdm/nodejs-tk102#develop

Settings

name | type | default | description :-----------|:--------|:--------|:---------------------------------- ip | string | 0.0.0.0 | Listen on IP, 0.0.0.0 is all IPs port | integer | 0 | Listen on port, 0 is random (see listening event) connections | integer | 10 | Maximum simultaneous connections timeout | integer | 10 | Idle time out in seconds

server.createServer ({
  ip: '1.2.3.4',
  port: 0
});

Events

The server emits the following events about the server status and incoming GPS pushes.

track

( gpsObject )

The data push from the device.

server.on ('track', function (gps) {
  { raw: '1203301642,0031698765432,GPRMC,144219.000,A,5213.0327,N,00516.7759,E,0.63,179.59,300312,,,A*6D,F,imei:123456789012345,123',
    datetime: '2012-03-30 16:42',
    phone: '0031698765432',
    gps: { date: '2012-03-30', time: '14:42:19.000', signal: 'full', fix: 'active' },
    geo: { latitude: 52.130326, longitude: 5.167759, bearing: 179 },
    speed: { knots: 0.63, kmh: 1.167, mph: 0.725 },
    imei: '123456789012345' }
})

property | description :-----------|:-------------------------------------------------- raw | the input string without trailing whitespace datetime | the device 24h clock phone | the admin phonenumber that initiated this tracking gps |

• date | date as received from GPS
• time | time in 24h UTC as received from GPS
• signal | signal strength, either full or low
• fix | GPS fix, either active or invalid geo |
• latitude | position latitude
• longitude | position longitude
• bearing | direction in degrees speed |
• knots | speed in knots per hour
• kmh | speed in kilometer per hour
• mph | speed in miles per hour imei | device IMEI

data

( rawString )

The raw unprocessed inbound data.

server.on ('data', function (raw) {
  console.log ('Incoming data: '+ raw);
});

listening

( listeningObject )

Very useful to find out random port (0).

server.on ('listening', function (listen) {
  // listen = { port: 56751, family: 2, address: '0.0.0.0' }
});

connection

( socket )

Emitted when a connection is established with the server, includes the socket basics.

server.on ('connection', function (socket) {
  console.log ('Connection from '+ socket.remoteAddress);
});

disconnect

( socket )

Emitted when a connection is ended, includes the socket basics.

server.on ('disconnect', function (socket) {
  console.log ('Disconnected device '+ socket.remoteAddress);
});

timeout

( socket )

Emitted when a connection expires, includes the socket basics.

server.on ('timeout', function (socket) {
  console.log ('Time-out from '+ socket.remoteAddress);
});

fail

( Error )

Emitted when data cannot be parsed. Useful for debugging device issues.

Error is an instanceof Error with .stack trace.

server.on ('fail', function (err) {
  console.log (err);
});

error

( Error )

Emitted when a server related error occured.

Error is an instanceof Error with .stack trace.

Messages

error | description :------------------------|:--------------------------------- Server error | Catch server failures Socket error | Catch communication failures IP or port not available | This catches EADDRNOTAVAIL errors

server.on ('error', function (err) {
  console.log (err);
});

log

( name, data )

Emitted on any of the above events. Useful for debugging and logging.

argument | type | description :--------|:-------|:------------------------ name | string | Event name, i.e. track value | mixed | Data from the event

server.on ('log', function (name, value) {
  console.log ('Event: ' + name);
  console.log (value);
});

Notes

There is no security built in, anyone could push data to your server.

The parsed object is based on a lot of testing in the field and incomplete documentation, I hope I got it right. There are many variations of the TK102 tracker available with each different data formats. It may be possible your device or even mine is one of the clones and incompatible with this module.

If you can, please provide multiple responses from the data event in a Github issue (public) or contact me directly, your data is handled confidentially. Preferably leave the device tracking with an interval of 30 seconds or less for about 3 to 5 minutes outdoors or near a window. This way I can figure out the data format and various states the tracker reports about itself to the server.

Unlicense

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

For more information, please refer to http://unlicense.org

Author

Franklin van de Meent | Website | Github