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Gpsd

GPS daemon for Unix-like systems

Summary

GPS daemon for Unix-like systems

Field	Value
name	gpsd
screenshot	Cgps GPSd screenshot.webp
caption	Screenshot of `cgps`, a ncurses command-line interface of gpsd
author	Remco Treffkorn,
Derrick Brashear
developer	Eric S. Raymond
latest release version
latest release date
programming language	C, Python
operating system	Linux, *BSD, Mac OS X, Android
platform	Any
size	~120K LOC
language	English
genre	GPS software
license	BSD license (2-clause)
website

Derrick Brashear gpsd is a computer software program that collects data from a Global Positioning System (GPS) receiver and provides the data via an Internet Protocol (IP) network to potentially multiple client applications in a server-client application architecture. Gpsd may be run as a daemon to operate transparently as a background task of the server. The network interface provides a standardized data format for multiple concurrent client applications, such as Kismet or GPS navigation software.

Gpsd is commonly used on Unix-like operating systems. It is distributed as free software under the 2-clause BSD license.

Design

gpsd provides a TCP/IP service by binding to port 2947 by default. It communicates via that socket by accepting commands, and returning results. These commands use a JSON-based syntax and provide JSON responses. Multiple clients can access the service concurrently.

The application supports many types of GPS receivers with connections via serial ports, USB, and Bluetooth. Starting in 2009, gpsd also supports AIS receivers.

gpsd supports interfacing with the Network Time Protocol (NTP) server ntpd via shared memory to enable setting the host platform's time via the GPS clock.

Authors

gpsd was originally written by Remco Treffkorn with Derrick Brashear, then maintained by Russell Nelson. It is now maintained by Eric S. Raymond.

References

[http://packages.debian.org/search?keywords=gpsd Debian packages of gpsd]
[https://admin.fedoraproject.org/pkgdb/acls/name/gpsd Fedora package of gpsd] {{webarchive. link. (2011-10-02)
[http://www.freebsdsoftware.org/astro/gpsd.html gpsd FreeBSD] from the [[FreeBSD]] ports archive
[http://gpsd.berlios.de/gpsd.html gpsd manual page] {{webarchive. link. (2011-07-18 gpsd project, retrieved 2011-07-11)
[http://gpsd.berlios.de/history.html A Brief History of GPSD, "In July and August 2009 ESR redesigned the GPSD command protocol and gave gpsd the ability to read data from marine AIS receivers and pass it to clients."; retrieved 2011-05-01] {{webarchive. link. (2006-10-14)
[http://pygps.org/gpsd/CHANGELOG GPSD CHANGELOG] {{webarchive. link. (2007-09-28)
[http://gpsd.berlios.de/history.html GPSD History] {{webarchive. link. (2006-10-14)
[http://thedailywtf.com/Articles/Bad-Code-Offsets-Open-Web-Innovation.aspx Bad Code Offsets: Open Web Innovation]

Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

global-positioning-system free-software-programmed-in-c free-software-programmed-in-python software-using-the-bsd-license

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