lowering gps sampling rate

[mqy]

Longer sampling rate does not save that much energy as expected. Also refer
to this [1].

Omgps uses fixed 1Hz send rate for now, but ever tested a lot (even FIXNOW)
before release.
Incoming version will support configuring sampling rate which is implemented
by sleep().

During my last trip (mountain climbing), we were told at hotel that the
mountain is difficult to climb, almost no way. I did a quick hacking:

To help find back way upon get lost, current position is displayed on track
replay; 
To save a bit energy, sampling rate was increased to 5 seconds

For next mountain climbing, I bought two Nokia BL-5C batteries yesterday :)

[1]
http://n2.nabble.com/test-result-of-battery-current-against-display-brightness-and-GPS--power-mode-tp2541178p2541178.html


jeremy jozwik wrote:
> 
> omgps does it. and tracks well too
> 
> On Fri, Jul 10, 2009 at 1:13 PM, Petr Vanek<vanous at penguin.cz> wrote:
>> the wiki mentions ]1[ how to increase the sampling rate of gps, is
>> there a way to lower it to save energy during gps tracking that
>> doesn't require such precision?
>>
>> Petr
>>
>>
>> ]1[
>> http://wiki.openmoko.org/wiki/Neo_FreeRunner_GPS#Configuration_for_a_higher_sampling_rate
>>
>>
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>> community at lists.openmoko.org
>> http://lists.openmoko.org/mailman/listinfo/community
>>
> 
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