Hi list, I have some gps problems on my Freerunner, but it seems like they do not origin from bad soldering of the internal gps connector (removed the plug with a small watchmakers screwdriver and examined it with my eyes [don't have much more at my dorm] and it seems to be ok (inner pin is not malformed, all solderings *look* alright - but could still be bad)).
My setup is: Om2008.8 with default sources plus angstrom distribution source. gpsd is installed and configured (/etc/default/gpsd stuff), agps is set up as well, I use a script /usr/bin/agps which contains: > agps-onlinec -c full -u "xxxmailxxx" -k "xxxpassxxx" -la 49.362960 > -lo 7.773482 -al 400 -p 500.00 Those coordinates are from Google Maps, verified at Wikipedia (as well as the altitude, 400m). Accuracy is 500 km (if I'm not wrong!). I do all my testing with the Freerunner pointing towards the sky (like OpenMoko Staff did for their measurment) and standing on the edge of my balcony (50% sky visible). Then I run those commands by ssh over WiFi (Mokos IP is 192.168.178.26): On Moko: /etc/init.d/gpsd start On Laptop: xpgs 192.168.178.26 This shows the current GPS data on my laptop - which is nothing (not even seeing a satellite) and does not change even after 5 minutes (remember: no SD Card inserted). I once had a usb GPS device which saw satellites in the very same position at an instant and took about 40 seconds to get a fix. Now I run agps: [EMAIL PROTECTED]:~# agps connect to agps.u-blox.com aid data 2664 bytes received aid data raw written ok This correctly "injects" satellite data into the gps as xgps now shows some satellites with a Signal-to-Noise Ratio of 0, but the gps still does not see any of them (and judging from the plotted data and that I know where north is it should be able to see at least 5 satellites). Letting the MoKo run for 40 minutes doesn't make it any better. I tried this with Om2007.2 (on SD), Om2008.8 (on Flash), FSO Milestone 2 Stable (on SD), FSO Milestone 12. August from totalueberwachung.de (on SD). All systems were "opkg update && opkg upgrade"-d, apgs configured and gpsd configured. Using something else than xgps (tangogps on moko, agpsui on moko, gpspipe -r) shows the same results. Well, gpspipe shows those "I have no clue where I am"-position-datasets and after using agps it shows the injected satellites => Software should be alright alright. This leaves either the internal connector or the antenna itself. Because the connector *seems* to be ok I think there could be also a problem with the antenna. The soldering one can see after removing the rearcover looks not very good, but I can't measure any of them right now. As soon as I get to my parents (propably on monday) I can use my fathers equipment (multimeter for solderings, a nice high frequency analyzers for the antenna :-D) and knowledge to search for the problem, but in case someone has any hints and/or ideas what I could try at my dorm (not much hardware here besides some screwdrivers, a linux laptop and a wireless network ;-)) I would happy to try that. Any help would be appreciated. Good night, Sebastian (I hope my english is understandable - I'm quite tired because I have been working on this the last 7 hours, and before that was at my system admin job for about 6 hours and I am somewhat addicted to my Freerunner so I got not much sleep last night :-D) -- Sebastian M. Student of Computer Science at the University of Kaiserslautern. _______________________________________________ support mailing list [email protected] https://lists.openmoko.org/mailman/listinfo/support
