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)
	}
}

p := nmea.SentenceParser{
    CustomParsers: nil,
    ParsePrefix:   nil,
    CheckCRC:      nil,
    OnTagBlock:    nil,
}
s, err := p.Parse("$GPRMC,220516,A,5133.82,N,00042.24,W,173.8,231.8,130694,004.2,W*70")

package main

import (
	"fmt"
	"log"
	"time"
	"github.com/adrianmo/go-nmea"
)

func main() {
	sentence := "\\s:Satelite_1,c:1553390539*62\\!AIVDM,1,1,,A,13M@ah0025QdPDTCOl`K6`nV00Sv,0*52"
	s, err := nmea.Parse(sentence)
	if err != nil {
		log.Fatal(err)
	}
	parsed := s.(nmea.VDMVDO)
	fmt.Printf("TAG Block timestamp: %v\n", time.Unix(parsed.TagBlock.Time, 0))
	fmt.Printf("TAG Block source:    %v\n", parsed.TagBlock.Source)
}

package main

import (
	"fmt"

	"github.com/adrianmo/go-nmea"
)

// A type to hold the parsed record
type XYZType struct {
	nmea.BaseSentence
	Time    nmea.Time
	Counter int64
	Label   string
	Value   float64
}

func main() {
	// Do this once it will error if you register the same type multiple times
	err := nmea.RegisterParser("XYZ", func(s nmea.BaseSentence) (nmea.Sentence, error) {
		// This example uses the package builtin parsing helpers
		// you can implement your own parsing logic also
		p := nmea.NewParser(s)
		return XYZType{
			BaseSentence: s,
			Time:         p.Time(0, "time"),
			Label:        p.String(1, "label"),
			Counter:      p.Int64(2, "counter"),
			Value:        p.Float64(3, "value"),
		}, p.Err()
	})

	if err != nil {
		panic(err)
	}

	sentence := "$00XYZ,220516,A,23,5133.82,W*42"
	s, err := nmea.Parse(sentence)
	if err != nil {
		panic(err)
	}

	switch m := s.(type) {
	case XYZType:
		fmt.Printf("Raw sentence: %v\n", m)
		fmt.Printf("Time: %s\n", m.Time)
		fmt.Printf("Label: %s\n", m.Label)
		fmt.Printf("Counter: %d\n", m.Counter)
		fmt.Printf("Value: %f\n", m.Value)
	default:
		panic("Could not parse XYZ sentence")
	}
}

package main

import (
	"fmt"

	"github.com/adrianmo/go-nmea"
)

// VTG represents track & speed data.
// http://aprs.gids.nl/nmea/#vtg
type VTG struct {
	nmea.BaseSentence
	TrueTrack        nmea.Float64
	MagneticTrack    nmea.Float64
	GroundSpeedKnots nmea.Float64
	GroundSpeedKPH   nmea.Float64
}

func main() {
	nmea.MustRegisterParser("VTG", func(s nmea.BaseSentence) (nmea.Sentence, error) {
		p := nmea.NewParser(s)
		return VTG{
			BaseSentence:     s,
			TrueTrack:        p.NullFloat64(0, "true track"),
			MagneticTrack:    p.NullFloat64(2, "magnetic track"),
			GroundSpeedKnots: p.NullFloat64(4, "ground speed (knots)"),
			GroundSpeedKPH:   p.NullFloat64(6, "ground speed (km/h)"),
		}, p.Err()
	})

	sentence := "$GPVTG,140.88,T,,M,8.04,N,14.89,K,D*05"
	s, err := nmea.Parse(sentence)
	if err != nil {
		panic(err)
	}

	m, ok := s.(VTG)
	if !ok {
		panic("Could not parse VTG sentence")
	}
	fmt.Printf("Raw sentence: %v\n", m)
	fmt.Printf("TrueTrack: %v\n", m.TrueTrack)
	fmt.Printf("MagneticTrack: %v\n", m.MagneticTrack)
	fmt.Printf("GroundSpeedKnots: %v\n", m.GroundSpeedKnots)
	fmt.Printf("GroundSpeedKPH: %v\n", m.GroundSpeedKPH)
}