node-nan v1.0.2

GPS library

The GPS library

Build it

$ npm install

Use it

This project is mainly created for Raspberry ARM boards.

const gps = require('./bindings')

The library mainly exposes few methods

• Start(port) - Initialize the communication
• GetData - Expose data from GPS (latitude, longitude, speed, course, altitude)
• Stop - Turn off the GPS device

This project abstracts all datas and replies in:

• Decimal Degrees for latitudes and logitudes (46.235325, 7.12521)
  • Not degrees (42° 53' 23.25'' North - 4° 22' 46.3'' West)
• Knots for speeds
• Degrees for angles (course)
• Meters for altitude

Example - Position logging

Create a simple positionLogger.js

const gps = require('./bindings')

gps.Start('/dev/ttyS2')

while(1)
    console.log(gps.GetData())

Run it

$ node positionLogger.js

You will see your data directly in console:

{ latitude: 00.00000, longitude: 00.00000, speed: 10.0, altitude: 50, course: 152.093 }
{ latitude: 00.00000, longitude: 00.00000, speed: 12.0, altitude: 51, course: 152.099 }
{ latitude: 00.00000, longitude: 00.00000, speed: 13.0, altitude: 52, course: 152.092 }
{ latitude: 00.00000, longitude: 00.00000, speed: 11.0, altitude: 53, course: 152.096 }
{ latitude: 00.00000, longitude: 00.00000, speed: 16.0, altitude: 52, course: 152.095 }

Example - Position logging + callback

Create a simple positionLogger.js

const gps = require('./bindings')

gps.Start('/dev/ttyS2', (err) => {
    if (err) throw err
})

while(1)
    gps.GetData((err, data) => {
        if (err) throw err
        console.log(data)    
    })

Run it

$ node positionLogger.js

You will see your data directly in console:

{ latitude: 00.00000, longitude: 00.00000, speed: 10.0, altitude: 50, course: 152.093 }
{ latitude: 00.00000, longitude: 00.00000, speed: 12.0, altitude: 51, course: 152.099 }
{ latitude: 00.00000, longitude: 00.00000, speed: 13.0, altitude: 52, course: 152.092 }
{ latitude: 00.00000, longitude: 00.00000, speed: 11.0, altitude: 53, course: 152.096 }
{ latitude: 00.00000, longitude: 00.00000, speed: 16.0, altitude: 52, course: 152.095 }