Another thing that might help: If the FR is connected to any network one should also be able to use IP Locator services like http://whatismyipaddress.com/ to get another extimation of the location of FR. They are usually quite accurate.
Would this help? 2008/7/7 Yogiz <[EMAIL PROTECTED]>: > On Mon, 7 Jul 2008 15:37:08 +0100 > Al Johnson <[EMAIL PROTECTED]> wrote: > > Thank you for the testing. Keep doing the good work. > Hopefully this idea can solve the long fix problem. >> >> First stab uses the example perl functions from ublox for generating >> the aid-ini data, replacing their hardcoded x,y,z with values for my >> location. The copyright notice on the example code says you can't do >> anything with it without permission so I can't give you the script, >> but I can tell you how to reproduce it ;-) >> >> Get the AssistNow online client application note from: >> http://people.openmoko.org/matt_hsu/ImplementationAssistNowServerAndClient(GPS.G4-SW-05017-C).pdf >> >> Create a new script aid-ini.pl and start with: >> >> #!/usr/bin/perl >> print(clientdata_prepare()); >> >> Go to section B - Sample Server implementation and append subroutines >> clientdata_prepare and ubx_checksum to aid-ini.pl >> >> You need to replace the $posx, $posy and $posz values in >> clientdata_prepare with some that match your location. These are ECEF >> coordinated in m. There's an explanation of the calculation method in: >> http://www.u-blox.com/customersupport/docs/GPS.G1-X-00006.pdf >> >> Alternatively you can use the attached spreadsheet if it survives the >> list. Just replace the lat and lon with values for your location. >> >> You probably want to change the time accuracy to reflect the accuracy >> of the Freerunner clock, and possibly the accuracy of your location >> estimate. >> >> Now copy the script to somewhere suitable on the Freerunner and make >> it executable. I'm using /usr/local/bin. You need to install perl if >> you don't have it already: >> opkg install perl >> >> Switch on the GPS then run the script: >> /usr/local/bin/aid-ini.pl > /dev/ttySAC1 >> >> If you cat /dev/ttySAC1 you should be able to see it using the >> current time according to your Freerunner. TangoGPS makes it easier >> to see what it's doing. In the only test I've managed so far it got a >> fix with a poor view of the sky, while my Garmin Geko was still >> struggling to see 3 sats. It wasn't quick, but it was better than the >> Garmin. It would be interesting if you could try 2 units side by >> side, one with aid-ini and one without, to see if it really makes a >> difference or if I was just lucky. I'll try to get some more testing >> in, but the weather isn't good here, and I don't want to get my new >> toy wet ;-) > > _______________________________________________ > Openmoko community mailing list > community@lists.openmoko.org > http://lists.openmoko.org/mailman/listinfo/community > _______________________________________________ Openmoko community mailing list community@lists.openmoko.org http://lists.openmoko.org/mailman/listinfo/community