On Sat, Jul 04, 2009 at 09:17:25PM +0400, Paul Fertser wrote: > Sebastian Krzyszkowiak <seba.d...@gmail.com> writes: > > On 7/4/09, Hammer Armin <aham...@datazug.ch> wrote: > >> With the internal gps antenna, the first fix last quite long - > >> with the external - within 5min to 10min I get a fix. > > > > WTF? I'm getting fix easly with *internal* GPS antenna in 30 seconds - > > 2 minutes... > > Because you already have almanac (and sometimes ephemeris) data.
Where would I have it from (that Hammer Armin doesn't)? I ran the GPS-TTFF script below standing on my balcony. Times with * are with the --coldstart option. 45* 38 57 48 48 44 44* 45* 52* 44* And that's on Debian, which doesn't have the latest-and-greatest FSO where saving and restoring almanac and ephemeris works. Back when I briefly used OM 2008.8, I also got a fix in around 45 s. I tried with the Freerunner lying in the window frame, and then it took 11 minutes to get a fix. My Freerunner is revision A6 with date code 20080722. #!/bin/sh # GPS-TTFF - Find GPS time to first fix using all the important buzz-words # such as D-bus, Gypsy, freedesktop.org and freesmartphone.org. # Destinations and paths are listed in /etc/dbus-1/system.d/*. # Interfaces are "documented" at <URL:http://docs.freesmartphone.org/>. DBUSCALL_='dbus-send --print-reply=undocumented --system --type=method_call --dest=' if [ "--coldstart" = "$1" ]; then rm -f /var/lib/freesmartphone/ogpsd.pickle fi # Crude way of stripping white-space from $() output. GPSPOLICY=$(echo $(${DBUSCALL_}org.freesmartphone.ousaged /org/freesmartphone/Usage org.freesmartphone.Usage.GetResourcePolicy string:GPS)) ${DBUSCALL_}org.freesmartphone.ousaged /org/freesmartphone/Usage org.freesmartphone.Usage.SetResourcePolicy string:GPS string:enabled START=$(date +%s) # Where is the first return value from GetPosition documented? while ${DBUSCALL_}org.freedesktop.Gypsy /org/freedesktop/Gypsy org.freedesktop.Gypsy.Position.GetPosition \ | head -n 1 | grep -q -v -F -e 'int32 15' -e 'int32 7'; do sleep 1 done FINISH=$(date +%s) echo "Time to first fix: $((${FINISH} - ${START})) s" ${DBUSCALL_}org.freedesktop.Gypsy /org/freedesktop/Gypsy org.freedesktop.Gypsy.Position.GetPosition ${DBUSCALL_}org.freesmartphone.ousaged /org/freesmartphone/Usage org.freesmartphone.Usage.SetResourcePolicy string:GPS string:${GPSPOLICY} -- Rask Ingemann Lambertsen Danish law requires addresses in e-mail to be logged and stored for a year _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community