you have qgpslog as an only logging app.<br><br><br><div class="gmail_quote">2010/9/10 Timo Juhani Lindfors <span dir="ltr"><<a href="mailto:timo.lindfors@iki.fi">timo.lindfors@iki.fi</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
<div class="im">Xavier Cremaschi <<a href="mailto:omega.xavier@gmail.com">omega.xavier@gmail.com</a>> writes:<br>
> It seems that GPS chip is able to keep the fix while FR is suspended<br>
> (/sys/devices/platform/gta02-pm-gps.0/keep_on_in_suspend), but I need<br>
> the CPU to log data, don't I ?<br>
<br>
</div>The GSM chip has an ARM cpu. It is possible to run code on it and<br>
modify it to buffer the data to its own memory so that you only need<br>
to wake the main CPU once every 10 minutes or so.<br>
<div class="im"><br>
> - launch fsoraw -r GPS tangogps and start logging<br>
<br>
</div>tangogps consumes cpu time uselessly. I just<br>
<br>
echo '?WATCH={"class":"WATCH","enable":true,"json":false,"nmea":true,"raw":0,"scaled":false,"timing":false}' | nc localhost gpsd > $HOME/gps/`date -Iseconds`.dump<br>
<br>
currently with gpsd.<br>
<div class="im"><br>
> - let the FR disable display after 30s (problem : any touch on screen<br>
> will keep it up)<br>
<br>
</div>I have been using<br>
<br>
<a href="http://iki.fi/lindi/openmoko/touchscreen-lock.c" target="_blank">http://iki.fi/lindi/openmoko/touchscreen-lock.c</a><br>
<br>
for a year or so. It locks the touchscreen so that X does not see any<br>
events unless you swipe the screen slowly from top to bottom with your<br>
finger.<br>
<div class="im"><br>
> if I want to use my FR as a GPS track logger (for an OSM mapping party<br>
> for example), what is the best way to save battery life ?<br>
<br>
</div>I carry a set of external usb batteries with me when mapping. See<br>
<br>
<a href="http://wiki.openmoko.org/wiki/user:lindi" target="_blank">http://wiki.openmoko.org/wiki/user:lindi</a><br>
<br>
for more info.<br>
<div><div></div><div class="h5"><br>
_______________________________________________<br>
Openmoko community mailing list<br>
<a href="mailto:community@lists.openmoko.org">community@lists.openmoko.org</a><br>
<a href="http://lists.openmoko.org/mailman/listinfo/community" target="_blank">http://lists.openmoko.org/mailman/listinfo/community</a><br>
</div></div></blockquote></div><br>