From: David Sandwell <dsandwell@uc...> - 2008-05-07 03:57:00
We want to capture GPS data at 4 Hz on our gumstix. Is there
a special software command to do tell the GPS receiver to
send the NEMA data at 4 Hz rather than 1 Hz? We have the
This is a ublox module which is capable of operating
at 4 Hz.
Our application is monitoring the velocity/position of a surfboard.
David T. Sandwell
Scripps Inst. of Oceanography
La Jolla, CA
Ph. 858 534-7109
Fax 858 534-2902
Cell 858 663-9426
Express Mail Address:
8795 Biological Grade
La Jolla, CA 92037
To configure this, and many other u-blox GPS chipset/module
settings, you'll have to become familiar with the u-blox proprietary
UBX binary protocol:
For the [now-]older ANTARIS 4 based modules (e.g., LEA-4 / NEO-4):
For the new u-blox 5 based modules:
For your particular question you probably want to carefully read the
System / hardware Integration Manual sections about Navigation Update
Rate, then check out the UBX Class CFG protocol document sections - you
may have/want to configure more than just the update rate, as (for
example) having the module spitting out every default NMEA msg at 1 Hz
and a low baud rate likely isn't what you want.
Your best friend for playing with UBX protocol configuration settings
(including configuring your CFG settings so they become the power-on
defaults) is the [free] u-blox u-center software tool:
On Tue, 6 May 2008 20:57:05 -0700, "David Sandwell" <dsandwell@...>
> We want to capture GPS data at 4 Hz on our gumstix. Is there
> a special software command to do tell the GPS receiver to
> send the NEMA data at 4 Hz rather than 1 Hz? We have the
> following module.
> This is a ublox module which is capable of operating
> at 4 Hz.
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