https://github.com/mnalis/gsd4t_parser

Samsung Galaxy S2 GSD4t GPS binary format parser and info
https://github.com/mnalis/gsd4t_parser

android gps reverse-engineering

Last synced: 11 months ago
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Samsung Galaxy S2 GSD4t GPS binary format parser and info

• Host: GitHub
• URL: https://github.com/mnalis/gsd4t_parser
• Owner: mnalis
• License: gpl-3.0
• Created: 2014-06-22T01:07:00.000Z (almost 12 years ago)
• Default Branch: master
• Last Pushed: 2018-04-06T15:45:34.000Z (almost 8 years ago)
• Last Synced: 2025-04-03T13:38:46.276Z (12 months ago)
• Topics: android, gps, reverse-engineering
• Language: Perl
• Homepage:
• Size: 152 KB
• Stars: 7
• Watchers: 3
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

          
Samsung Galaxy S2 uses GSD4t GPS chipset,

which does not use regular SiRF binary protocol, but some new variant, which is not yet supported by gpsd 

(as of 2014-06-22 gpsd v.3.10+dev3~d6b65b48-1)

The aim of this project is to create helpful scripts and instructions to help reverse engineer the new protocol, 

and make a converter to regular SiRF binary protocol (or NMEA).

As of 2015-01-05, much of the data has been reverse engineered, and it seems

that the hardware is really dumb; so all processing (downloading ephemeris,

calculation pseudoranges, solving GPS location etc.) would have to be done

completely in software.

Latest version can be found at GitHub

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