added an example and small update to main file

examples/tty.js

@@ -0,0 +1,25 @@
+var  serial = require('serialport') // voodootikigod / node-serialport : npm -g install serialport
+    ,nmea   = require('nmea');   
+
+// don't print errors
+nmea.setErrorHandler(function(s) {});
+
+// open the serial port at the required baud rate and use the line parser
+// note that NMEA output uses \r\n instead of just \n as a line delimiter
+var sp = new serial.SerialPort("/dev/ttyS0",
+                              { 
+                                baudrate:4800,
+                                parser: serial.parsers.readline("\r\n") 
+                               });
+
+// wait for data
+sp.on('data',function(line) {
+  // parse the nmea sentence 
+  var s = nmea.parse(line);
+  if (s != null) {
+    // if it was parseable, print the raw line and the decoded object data
+    console.log(line);
+    console.log(s);    
+  }
+});
+

lib/nmea001.js

@@ -351,7 +351,7 @@ var NMEA = ( function() {
     };
 
     // decode longitude
-    // first two digits are degress
+    // first three digits are degress
     // rest of digits are decimal minutes
     nmea.parseLongitude = function(lon,hemi) {
         var h;
@@ -362,12 +362,12 @@ var NMEA = ( function() {
         h = (hemi === 'E')?1.0:-1.0;
         a = lon.split('.');
         if (a[0].length === 5) {
-            // two digits of degrees
+            // three digits of degrees
             dg = lon.substring(0,3);
             mn = lon.substring(3);
         }
         else if (a[0].length === 4) {
-            // 1 digit of degrees (in case no leading zero)
+            // 2 digits of degrees (in case no leading zero)
             dg = lon.substring(0,2);
             mn = lon.substring(2);
         }
@@ -399,7 +399,7 @@ var NMEA = ( function() {
         var s = parseInt(time.slice(4,6),10);
         var D = parseInt(date.slice(0,2),10);
         var M = parseInt(date.slice(2,4),10);
-        var Y = parseInt(date.slice(4,6),10) + 1900;
+        var Y = parseInt(date.slice(4,6),10) + 2000;
 
         return new Date(Date.UTC(Y,M,D,h,m,s));
     };