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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,70 +1,39 @@ | ||
| package nmea | ||
|
|
||
| import "fmt" | ||
|
|
||
| const ( | ||
| // PrefixGNGGA prefix | ||
| PrefixGNGGA = "GNGGA" | ||
| ) | ||
|
|
||
| // GNGGA is the Time, position, and fix related data of the receiver. | ||
| type GNGGA struct { | ||
| Sentence | ||
| // Time of fix. | ||
| Time string | ||
| // Latitude. | ||
| Latitude LatLong | ||
| // Longitude. | ||
| Longitude LatLong | ||
| // Quality of fix. | ||
| FixQuality string | ||
| // Number of satellites in use. | ||
| NumSatellites string | ||
| // Horizontal dilution of precision. | ||
| HDOP string | ||
| // Altitude. | ||
| Altitude string | ||
| // Geoidal separation | ||
| Separation string | ||
| // Age of differential GPD data. | ||
| DGPSAge string | ||
| // DGPS reference station ID. | ||
| DGPSId string | ||
| } | ||
|
|
||
| func NewGNGGA(sentence Sentence) GNGGA { | ||
| s := new(GNGGA) | ||
| s.Sentence = sentence | ||
| return *s | ||
| Sent | ||
| Time Time // Time of fix. | ||
| Latitude LatLong // Latitude. | ||
| Longitude LatLong // Longitude. | ||
| FixQuality string // Quality of fix. | ||
| NumSatellites int64 // Number of satellites in use. | ||
| HDOP float64 // Horizontal dilution of precision. | ||
| Altitude float64 // Altitude. | ||
| Separation float64 // Geoidal separation | ||
| DGPSAge string // Age of differential GPD data. | ||
| DGPSId string // DGPS reference station ID. | ||
| } | ||
|
|
||
| func (s GNGGA) GetSentence() Sentence { | ||
| return s.Sentence | ||
| } | ||
|
|
||
| func (s *GNGGA) parse() error { | ||
| var err error | ||
|
|
||
| if s.Type != PrefixGNGGA { | ||
| return fmt.Errorf("%s is not a %s", s.Type, PrefixGNGGA) | ||
| } | ||
| s.Time = s.Fields[0] | ||
| s.Latitude, err = NewLatLong(fmt.Sprintf("%s %s", s.Fields[1], s.Fields[2])) | ||
| if err != nil { | ||
| return fmt.Errorf("GNGGA decode error: %s", err) | ||
| } | ||
| s.Longitude, err = NewLatLong(fmt.Sprintf("%s %s", s.Fields[3], s.Fields[4])) | ||
| if err != nil { | ||
| return fmt.Errorf("GNGGA decode error: %s", err) | ||
| } | ||
| s.FixQuality = s.Fields[5] | ||
| if s.FixQuality != Invalid && s.FixQuality != GPS && s.FixQuality != DGPS { | ||
| return fmt.Errorf("Invalid fix quality [%s]", s.FixQuality) | ||
| } | ||
| s.NumSatellites = s.Fields[6] | ||
| s.HDOP = s.Fields[7] | ||
| s.Altitude = s.Fields[8] | ||
| s.Separation = s.Fields[10] | ||
| s.DGPSAge = s.Fields[12] | ||
| s.DGPSId = s.Fields[13] | ||
| return nil | ||
| // NewGNGGA constructor | ||
| func NewGNGGA(s Sent) (GNGGA, error) { | ||
| p := newParser(s, PrefixGNGGA) | ||
| return GNGGA{ | ||
| Sent: s, | ||
| Time: p.Time(0, "time"), | ||
| Latitude: p.LatLong(1, 2, "latitude"), | ||
| Longitude: p.LatLong(3, 4, "longitude"), | ||
| FixQuality: p.EnumString(5, "fix quality", Invalid, GPS, DGPS), | ||
| NumSatellites: p.Int64(6, "number of satelites"), | ||
| HDOP: p.Float64(7, "hdop"), | ||
| Altitude: p.Float64(8, "altitude"), | ||
| Separation: p.Float64(10, "separation"), | ||
| DGPSAge: p.String(12, "dgps age"), | ||
| DGPSId: p.String(13, "dgps id"), | ||
| }, p.Err() | ||
| } |
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