go-nmea 
This is a NMEA library for the Go programming language (http://golang.org).
Installing
Using go get
go get github.com/adrianmo/go-nmea
After this command go-nmea is ready to use. Its source will be in:
$GOPATH/src/github.com/adrianmo/go-nmea
Supported sentences
At this moment, this library supports the following sentence types:
- RMC - Recommended Minimum Specific GPS/Transit data
- PMTK - Messages for setting and reading commands for MediaTek gps modules.
- GGA - GPS Positioning System Fix Data
- GSA - GPS DOP and active satellites
- GSV - GPS Satellites in view
- GLL - Geographic Position, Latitude / Longitude and time
- VTG - Track Made Good and Ground Speed
- ZDA - Date & time data
- HDT - Actual vessel heading in degrees True
- GNS - Combined GPS fix for GPS, Glonass, Galileo, and BeiDou
- PGRME - Estimated Position Error (Garmin proprietary sentence)
- THS - Actual vessel heading in degrees True and status
- VDM/VDO - Encapsulated binary payload
- WPL - Waypoint location
- RTE - Route
- VHW - Water Speed and Heading
Example
package main
import (
"fmt"
"log"
"github.com/adrianmo/go-nmea"
)
func main() {
sentence := "$GPRMC,220516,A,5133.82,N,00042.24,W,173.8,231.8,130694,004.2,W*70"
s, err := nmea.Parse(sentence)
if err != nil {
log.Fatal(err)
}
if s.DataType() == nmea.TypeRMC {
m := s.(nmea.RMC)
fmt.Printf("Raw sentence: %v\n", m)
fmt.Printf("Time: %s\n", m.Time)
fmt.Printf("Validity: %s\n", m.Validity)
fmt.Printf("Latitude GPS: %s\n", nmea.FormatGPS(m.Latitude))
fmt.Printf("Latitude DMS: %s\n", nmea.FormatDMS(m.Latitude))
fmt.Printf("Longitude GPS: %s\n", nmea.FormatGPS(m.Longitude))
fmt.Printf("Longitude DMS: %s\n", nmea.FormatDMS(m.Longitude))
fmt.Printf("Speed: %f\n", m.Speed)
fmt.Printf("Course: %f\n", m.Course)
fmt.Printf("Date: %s\n", m.Date)
fmt.Printf("Variation: %f\n", m.Variation)
}
}
Output:
$ go run main/main.go
Raw sentence: $GPRMC,220516,A,5133.82,N,00042.24,W,173.8,231.8,130694,004.2,W*70
Time: 22:05:16.0000
Validity: A
Latitude GPS: 5133.8200
Latitude DMS: 51° 33' 49.200000"
Longitude GPS: 042.2400
Longitude DMS: 0° 42' 14.400000"
Speed: 173.800000
Course: 231.800000
Date: 13/06/94
Variation: -4.200000
Contributions
Please, feel free to implement support for new sentences, fix bugs, refactor code, etc. and send a pull-request to update the library.