gps

Documentation

Overview

Package gps provides a driver for GPS receivers over UART and I2C

Index

• Constants
• func FlightMode(gpsDevice GPSDevice) (err error)
• func SetCfgGNSS(gpsDevice GPSDevice) (err error)
• type Fix
• type GPSDevice
  • func NewI2C(bus *machine.I2C) GPSDevice
  • func NewUART(uart *machine.UART) GPSDevice
  • func (gps *GPSDevice) NextSentence() (sentence string)
  • func (gps *GPSDevice) WriteBytes(bytes []byte)
• type GPSParser
  • func Parser(gpsDevice GPSDevice) GPSParser
  • func (parser *GPSParser) NextFix() (fix Fix)

Constants

const (
	BYTES_AVAIL_REG = 0xfd
	DATA_STREAM_REG = 0xff
)

const (
	I2C_ADDRESS = 0x42
)

The I2C address which this device listens to.

Functions

func FlightMode

func FlightMode(gpsDevice GPSDevice) (err error)

func SetCfgGNSS

func SetCfgGNSS(gpsDevice GPSDevice) (err error)

Types

type Fix

type Fix struct {
	Valid      bool
	Time       time.Time
	Latitude   float32
	Longitude  float32
	Altitude   int32
	Satellites int16
}

fix is a GPS location fix

type GPSDevice

type GPSDevice struct {
	// contains filtered or unexported fields
}

Device wraps a connection to a GPS device.

func NewI2C

func NewI2C(bus *machine.I2C) GPSDevice

NewI2C creates a new I2C GPS connection.

func NewUART

func NewUART(uart *machine.UART) GPSDevice

NewUART creates a new UART GPS connection. The UART must already be configured.

func (*GPSDevice) NextSentence

func (gps *GPSDevice) NextSentence() (sentence string)

ReadNextSentence returns the next valid NMEA sentence from the GPS device.

func (*GPSDevice) WriteBytes

func (gps *GPSDevice) WriteBytes(bytes []byte)

WriteBytes sends data/commands to the GPS device

type GPSParser

type GPSParser struct {
	// contains filtered or unexported fields
}

func Parser

func Parser(gpsDevice GPSDevice) GPSParser

func (*GPSParser) NextFix

func (parser *GPSParser) NextFix() (fix Fix)

NextFix returns the next GPS location Fix from the GPS device