Commands for the GPS module. They are prefixed by "GPS ".

ON:: Turns the GPS on

OFF:: Turns the GPS off

GSA [ON/(OFF)]:: Turns on or off GSA messages. Off by default. No argument prints out the value.

GSV [ON/(OFF)]:: Turns on or off GSV messages. Off by default. No argument prints out the value.

RATE [n]:

Change the GPS rate. Should be 0 < x < 10 in steps of 0.5. No argument prints out the value.

Turns on or off heading messages from the MB* dual heading gps module.

ALTITUDE [ON/(OFF)]:: Turns on or off Altitude via JSON payloads. No argument prints out the value.

PRECISION [(STD)/HIGH]:: Gets or Sets the numerical precision used for recording and transmitting GPS positions. Use HIGH for RTK applications.

RATE [n]:

Sets the heading offset for the MB* dual heading gps module. Value is a float in degrees (-360 < x < 360). No argument prints out the value.

Sets the antenna spacing for the MB* dual heading gps module. Value is a float in metres (x > 0.3). No argument prints out the value.

SBAS [(NONE)/AUTO/EGNOS/WAAS/[n]]:: Sets the SBAS setting for the GPS module. Auto is not availible for the IT600.
The IT600 only supports one custom PRN, whilst the u-blox can have many seprated by spaces.
Default is AUTO on the u-blox, and NONE on the it600.
No argument prints out the current value.

TIMEBUMP [n]:

STATUS:: Prints out the current status of the gps module

MODEL:: Prints out the name of the GPS module installed.

AUDIO <ON>/OFF:: Turn on or off the text audio notifications for gps. No argument prints out current value.

LATLON [ON/OFF] [AUTO/GGA/RMC] [GGA/RMC]:: Turns on or off LatLon information from the GPS. The source for the LatLon data can also be set.

COGSOG [ON/OFF] [AUTO/RMC/VTG] [RMC/VTG]:: Turns on or off LatLon information from the GPS. The source for the LatLon data can also be set.

STARTUP (AUTO)/MANUAL:: Allows the manual setup of the GPS unit rather than the default setup commands

ROLE (AUTO)/AUTONOMOUS/BASE/ROVER:: Sets the M8 gps to either be a base/rover or autonomous. Note: correct module required (NEO-M8P-2 = Base, NEO-M8P-0 = Rover, NEO-M8N = Standard)

POSITION SURVEY:

Sets the survey mode of the M8 base (NEO-M8P-2). Fast = 60 seconds, 3 metres. Accurate = 24 hours, 1mm. Note: Both conditions must be met in order for the the survey to finish.

Sets the survey for the M8 base with custom parameters. Time is in seconds, accuarcy is in mm.

Sets the rover mode for the M8 rover.

STARTUP CLEAR:: Used in conjunction with GPS STARTUP MANUAL to clear all existing commands

STARTUP BAUD [rate]:

STARTUP CMD <cmd> <timeout> <max_attempts> <pause_after_ok>:: GPS STARTUP COMMAND is an alias.

PLAYBACK <STOP/filename>:

SETTLE_TIME [delay]:: Change the settle time

TIMESOURCE [SET]:

DELAY <n>h:

AUDIO <ON>/OFF:: Sets the logfile type.