From 54b7daea6c449d9bb962ceb7f941147fb74df0d2 Mon Sep 17 00:00:00 2001
From: Marius Ursache <marius@marius.me.uk>
Date: Mon, 8 Dec 2014 21:39:13 +1100
Subject: [PATCH] Added DEVID decoder for Sierra Wireless AVL

---
 lib/NMEA.js        |  3 +++
 lib/codes/DEVID.js | 36 ++++++++++++++++++++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 lib/codes/DEVID.js

diff --git a/lib/NMEA.js b/lib/NMEA.js
index a184dcd..3600715 100644
--- a/lib/NMEA.js
+++ b/lib/NMEA.js
@@ -10,6 +10,7 @@ var MWV = require("./codes/MWV.js");
 var DBT = require("./codes/DBT.js");
 var HDG = require("./codes/HDG.js");
 var VHW = require("./codes/VHW.js");
+var DEVID = require("./codes/DEVID.js");
 var Helper = require("./Helper.js");
 
 /** NMEA module */
@@ -185,6 +186,8 @@ var NMEA = ( function() {
     nmea.addParser(new GLL.Decoder("GPGLL"));
     nmea.addParser(new HDG.Decoder("HCHDG"));
     nmea.addParser(new VHW.Decoder("VWVHW"));
+    // non-standard decoders
+    nmea.addParser(new DEVID.Decoder("DEVID"));
     // add the standard encoders
     nmea.addEncoder(new GGA.Encoder("GPGGA"));
     nmea.addEncoder(new RMC.Encoder("GPRMC"));
diff --git a/lib/codes/DEVID.js b/lib/codes/DEVID.js
new file mode 100644
index 0000000..a6d8421
--- /dev/null
+++ b/lib/codes/DEVID.js
@@ -0,0 +1,36 @@
+// Sierra Wireless GX 440 Device ID Parser
+// $DEVID,0x0000028A003D2A10*40
+
+var Helper = require("../Helper.js");
+
+exports.Decoder = function(id) {
+  this.id = id;
+  this.talker_type_id = "DEVID";
+  this.talker_type_desc = "Device ID";
+
+  this.parse = function(tokens) {
+    if(tokens.length < 2) {
+      throw new Error('DEVID: not enough tokens');
+    }
+
+    // trim whitespace
+    // some parsers may not want the tokens trimmed so the individual parser has to do it if applicable
+    var i;
+    for(i=0;i<tokens.length;++i) {
+      tokens[i] = tokens[i].trim();
+    }
+
+    // Remove 0x to match the device id from the status page
+    var deviceId = Helper.encodeValue(tokens[1]);
+    if(deviceId.length > 2){
+      deviceId = deviceId.substr(2);
+    }
+
+    return  {
+      id : tokens[0].substr(1),
+      talker_type_id: this.talker_type_id,
+      talker_type_desc: this.talker_type_desc,
+      device:deviceId
+    };
+  };
+};