gpsd

type Conn struct {
	Version Version
	// contains filtered or unexported fields
}

type Device struct {
	Path     string `json:"path,omitempty"`
	Flags    *int   `json:"flags,omitempty"`
	Driver   string `json:"driver,omitempty"`
	Subtype  string `json:"subtype,omitempty"`
	Bps      *int   `json:"bps,omitempty"`
	Parity   string `json:"parity"`
	StopBits int    `json:"stopbits"`
}

type NMEAMode int

type Position struct {
	Lat, Lon float64   // Latitude/longitude in degrees. +/- signifies north/south.
	Alt      float64   // Altitude in meters.
	Track    float64   // Course over ground, degrees from true north.
	Speed    float64   // Speed over ground, meters per second.
	Time     time.Time // Time as reported by the device.
}

type Positioner interface {
	Position() Position
	HasFix() bool
}

type Satellite struct {
	// PRN ID of the satellite. 1-63 are GNSS satellites, 64-96 are GLONASS satellites, 100-164 are SBAS satellites.
	PRN int `json:"PRN"`

	// Azimuth, degrees from true north.
	Azimuth json.Number `json:"az"`

	// Elevation in degrees.
	Elevation json.Number `json:"el"`

	// Signal strength in dB.
	SignalStrength json.Number `json:"ss"`

	// Used in current solution?
	//
	// (SBAS/WAAS/EGNOS satellites may be flagged used if the solution has corrections from them, but not all drivers make this information available).
	Used bool `json:"used"`
}

type Sky struct {
	Device string    `json:"device,omitempty"`
	Time   time.Time `json:"time,omitempty"`

	XDOP, YDOP, VDOP, TDOP, HDOP, PDOP, GDOP json.Number

	Satellites []Satellite `json:"satellites"`
}

type TPV struct {
	Device string      // Name of originating device.
	Mode   NMEAMode    // NMEA mode: %d, 0=no mode value yet seen, 1=no fix, 2=2D, 3=3D.
	Time   time.Time   // Time/date stamp.  May have a fractional part of up to .001sec precision. May be absent if mode is not 2D or 3D.
	EPT    json.Number // Estimated timestamp error (%f, seconds, 95% confidence). Present if time is present.

	Lat, Lon, Alt       json.Number
	EPX, EPY, EPV       json.Number // Lat, Lon, Alt error estimate in meters, 95% confidence. Present if mode is 2 or 3 and DOPs can be calculated from the satellite view.
	Track, Speed, Climb json.Number
	EPD, EPS, EPC       json.Number
}

type Version struct {
	Release    string `json:"release"`
	Rev        string `json:"rev"`
	ProtoMajor int    `json:"proto_major"`
	ProtoMinor int    `json:"proto_minor"`
}