46 lines
1.1 KiB
Markdown
46 lines
1.1 KiB
Markdown
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A NMEA-0183 GPS Protocol parser
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===============================
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An example using the node-serialport library to read a stream of messages
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from a GlobalSat BU-353 USB GPS receiver:
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````
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var serialport = require('serialport');
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var nmea = require('nmea');
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var port = new serialport.SerialPort('/dev/cu.usbserial', {
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baudrate: 4800,
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parser: serialport.parsers.readline('\r\n')});
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port.on('data', function(line) {
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console.log(nmea.parse(line));
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});
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// { type: 'active-satellites',
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// selectionMode: 'A',
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// mode: 1,
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// satellites: [ 29, 18, 21 ],
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// PDOP: '',
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// HDOP: '',
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// VDOP: '',
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// talker_id: 'GP' }
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// { type: 'satellite-list-partial',
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// numMsgs: 3,
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// msgNum: 1,
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// satsInView: 11,
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// satellites:
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// [ { id: '18', elevationDeg: 7, azimuthTrue: 214, SNRdB: 43 },
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// { id: '21', elevationDeg: 5, azimuthTrue: 114, SNRdB: 34 },
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// { id: '26', elevationDeg: 71, azimuthTrue: 234, SNRdB: 0 } ],
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// talker_id: 'GP' }
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````
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To add custom codecs
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====================
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````
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var MyCustom = require('./MyCustom.js');
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nmea.traditionalDecoders['MyCustomr'] = MyCustom.decode;
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````
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