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| The Following User Says Thank You to aot For This Useful Post: | ||
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2008-07-22
, 14:25
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Posts: 716 |
Thanked: 236 times |
Joined on Dec 2007
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#52
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I have a simple (my first Python effort) GPS satellite monitor, plus track and speed:
http://www.zdez.org/GpsStatus-0.1.deb
1. You need to turn on the GPS yourself. Control panel for location, map, or "/usr/libexec/navicore-gpsd-helper" as user (not root) in the xterm will turn it on, as will my mingpsd application
2. It doesn't process the GPS stream thoroughly so will break if the NMEA sentences are bad. My programs tend to validate them, and there's no problem with the n810 internal, but Bluetooth sometimes drops characters.
3. Blue means too low signal. Then the color is "temperature color" based, from deep red to white hot. A filled circle means it is being used for the GPS calculation.
Remember this is my first python program, so it is likely very ugly. Improvements, suggestions, etc. are welcome.
Last edited by tz1; 2008-07-22 at 14:31. Reason: url typo
http://www.zdez.org/GpsStatus-0.1.deb
1. You need to turn on the GPS yourself. Control panel for location, map, or "/usr/libexec/navicore-gpsd-helper" as user (not root) in the xterm will turn it on, as will my mingpsd application
2. It doesn't process the GPS stream thoroughly so will break if the NMEA sentences are bad. My programs tend to validate them, and there's no problem with the n810 internal, but Bluetooth sometimes drops characters.
3. Blue means too low signal. Then the color is "temperature color" based, from deep red to white hot. A filled circle means it is being used for the GPS calculation.
Remember this is my first python program, so it is likely very ugly. Improvements, suggestions, etc. are welcome.
Last edited by tz1; 2008-07-22 at 14:31. Reason: url typo
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2008-07-22
, 23:12
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Posts: 716 |
Thanked: 236 times |
Joined on Dec 2007
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#53
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Update:
http://www.zdez.org/GpsStatus-0.2.deb
Waits for GPSD to come up (still manual). Background is (darkish) black for no gps, red for no lock, yellow for 2d, green for 3d.
And misc. other fixes.
http://www.zdez.org/GpsStatus-0.2.deb
Waits for GPSD to come up (still manual). Background is (darkish) black for no gps, red for no lock, yellow for 2d, green for 3d.
And misc. other fixes.
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2008-07-23
, 12:20
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Posts: 46 |
Thanked: 6 times |
Joined on Oct 2007
@ Tokyo
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#54
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I eventually flashed my n810 and installed a-gps. I use maemo-mapper only and the fixing time seemed much better than usual (~30" instead of 4-5minutes). However, I used to experience surprizingly fast fixing times, so I'm not 100% positive yet.
There is no feedback whatsoever, so it's difficult to tell what the a-gps app is doing... downloading something? storing something? I hope it will be more verbose in the future.
I wasn't sure, so I took no risk and started both a-gps ui and maemo-mapper (no fix inside my building) and then I went outside (with no wifi)... Should I keep a-gps running until I get a fix? should I start maemo-mapper+gps while a-gps-ui is running?
There is no feedback whatsoever, so it's difficult to tell what the a-gps app is doing... downloading something? storing something? I hope it will be more verbose in the future.
I wasn't sure, so I took no risk and started both a-gps ui and maemo-mapper (no fix inside my building) and then I went outside (with no wifi)... Should I keep a-gps running until I get a fix? should I start maemo-mapper+gps while a-gps-ui is running?
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2008-07-23
, 14:22
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Posts: 716 |
Thanked: 236 times |
Joined on Dec 2007
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#55
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Bad dependencies fixed - some ehancements
Note it needs python2.5 and the -gtk2 and -hildon python libs installed.
http://www.zdez.org/GpsStatus-0.2a.deb
Note it needs python2.5 and the -gtk2 and -hildon python libs installed.
http://www.zdez.org/GpsStatus-0.2a.deb
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2008-07-23
, 14:29
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Posts: 40 |
Thanked: 28 times |
Joined on Feb 2008
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#56
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Originally Posted by t24
Agreed, the A-GPS should provide proper feedback to user what it is doing. It is still beta though so hopefully some logging, proper documentation and feedback are included in future versions.
I eventually flashed my n810 and installed a-gps. I use maemo-mapper only and the fixing time seemed much better than usual (~30" instead of 4-5minutes). However, I used to experience surprizingly fast fixing times, so I'm not 100% positive yet.
There is no feedback whatsoever, so it's difficult to tell what the a-gps app is doing... downloading something? storing something? I hope it will be more verbose in the future.
I wasn't sure, so I took no risk and started both a-gps ui and maemo-mapper (no fix inside my building) and then I went outside (with no wifi)... Should I keep a-gps running until I get a fix? should I start maemo-mapper+gps while a-gps-ui is running?
I haven't noticed any need to keep a-gps-ui running after you have set your approximate location. As long as the supl daemon is running it should work. I have concluded that a-gps via supl is working if you can see several satellites with zero strength almost instantly after gpsd has started. Those are the satellites that should be visible from your location. This seems confirmed by the fact that usually 4-5 of those will start showing signal once I take my N810 outside and I will get GPS fix quickly. Occasionally no satellites are shown and then it is back to the old several minutes of waiting for fix.
Last edited by aot; 2008-07-23 at 14:31.
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2008-07-23
, 14:50
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Posts: 99 |
Thanked: 28 times |
Joined on Jun 2008
@ Philadelphia, PA
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#57
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According to Nokia the only time you need to run the A-GPS UI is when you need to select your location on the map. Any time you start maps it will automatically start A-GPS in the background to get new almanac data facilitate lock. That said, the lock time is still abysmally slow. My N95-4 can get a lock in 10 seconds, what's the problem with the tablet? All the metal in the housing looks great but I'm sure it's not helping the RF performance of the GPS receiver. 
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2008-07-25
, 23:36
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Posts: 1,361 |
Thanked: 115 times |
Joined on Oct 2005
@ Toronto, Ontario, Canada
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#58
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My tablet is about 3 hours out of the box. I've just flashed the latest version of 2008 and threw on a-gps. I think it's running because I see 7 satelites but only '19' and '03' seem to move higher than the default bar height. Only once did they do so at the same time.
This is ridiculous. :P
This is ridiculous. :P
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2008-07-25
, 23:58
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Posts: 5 |
Thanked: 0 times |
Joined on Dec 2007
@ Tennessee
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#59
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I am having a problem with A-GPS. I have diablo installed. When i install agps it says it is installed, yet i get no world map only a blank screen. I can touch the screen and see the coordinates change but the map does not show. I have rebooted, deleted and reinstalled, but everything is still the same. I noticed a post earlier, but i saw no answer to the problem. Any help would be appreciated.
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2008-07-26
, 04:07
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Posts: 1,361 |
Thanked: 115 times |
Joined on Oct 2005
@ Toronto, Ontario, Canada
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#60
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This might be a loaded question but what have you got installed? A-GPS was the first thing I installed after flashing Diablo. On that note I just got my tablet today so have yet to get a lock but the a-gps map appears at least. Still no results from the GPS setup but I suspect that's because I?m trying to connect from an east facing balcony and the building is blocking the western sky.
For me the A-GPS has made a big difference.