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2006-05-26
, 14:49
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Posts: 1,245 |
Thanked: 421 times |
Joined on Dec 2005
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#12
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Originally Posted by bradb
There are several possibilities that could cause this.I've noticed that until the receiver gets a fix - at least for me - I get this same error message. Once a fix is established, it seems to work fine.
If the problem is in parsing the GSV sentence, then one of the following fields must be bad: "message count", "message number", or "number of satellites in view". This seems unlikely.
If the problem is in parsing the RMC sentence, then probably your receiver does not attempt to provide any valid lat/lon data when the it does not have a fix. This is different from how my receiver works, which is to provide the "last valid lat/lon data" when there is no fix. If this is the case, then this is simply a matter of there being too many different NMEA implementations. I wish I had more GPS receiver models with which to test.
If anyone sees the "Invalid NMEA input from receiver!" message and has the ability to PM to me some NMEA output from their receiver, I can better debug Maemo Mapper's performance with their particular receiver.
The only reason we didn't see the error message before is because I didn't do any error checking before. Maybe I should revert to that behavior and hope for the best?
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2006-05-26
, 16:48
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Posts: 144 |
Thanked: 0 times |
Joined on Dec 2005
@ Niles IL...Chicago born and raised.
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#13
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Gnuite, I still have that issue when I was on the road. I never saw anything else besides the "invalid...." message. Let me know how to get my NMEA output I'll be glad to help out.
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2006-05-26
, 18:53
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Posts: 190 |
Thanked: 5 times |
Joined on Nov 2005
@ Bee-u-tee-ful Garden Home, Oregon
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#14
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Originally Posted by uNtouched
And to clarify with a bit more testing... my initial tests last night were on the patio. I can get a valid fix and everything seems to work, but as soon as I start to move I start getting the "invalid..." message again and I lose the fix.Gnuite, I still have that issue when I was on the road. I never saw anything else besides the "invalid...." message. Let me know how to get my NMEA output I'll be glad to help out.
Right now, I've got the receiver in my office window and have maemo mapper running on the 770. I've noticed despite the fact that I haven't moved since I've gotten a fix there is a trail indicating movement (maybe 50 feet?) and as I type this, I see movement on the screen (I've actually drifted across the screen in slow movement back and forth).
Let me know what sort of info I can provide to help debug this problem.
Brad.
Last edited by bradb; 2006-05-26 at 18:58.
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2006-05-26
, 19:47
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Posts: 3,096 |
Thanked: 1,525 times |
Joined on Jan 2006
@ Michigan, USA
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#15
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I updated, all settings are intact. I fired it up and everything is working without any issues.
Another great job
Another great job
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2006-05-26
, 20:38
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Posts: 31 |
Thanked: 2 times |
Joined on Apr 2006
@ Vilnius, Lithuania
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#16
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Originally Posted by gnuite
FWIF mysterious Bluetooth dropouts seem to happen with gpsd as well: https://maemo.org/bugzilla/show_bug.cgi?id=408I have added code that attempts to eliminate or handle the mysterous dropouts in bluetooth connectivity that cause Maemo Mapper to stop updating your current position while the UI continues to function.
This reminds me very much of the mysterious WiFi dropouts that I experience: https://maemo.org/bugzilla/show_bug.cgi?id=329
I just hope these are software/driver problems, and not something to do with the hardware.
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2006-05-26
, 20:42
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Posts: 31 |
Thanked: 2 times |
Joined on Apr 2006
@ Vilnius, Lithuania
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#17
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Originally Posted by gnuite
I think it would be better to keep it.The only reason we didn't see the error message before is because I didn't do any error checking before. Maybe I should revert to that behavior and hope for the best?
I spent a day trying to figure out why my GPS stopped working in Maemo Mapper. It turned out that gpsd had silently switched it from NMEA into some binary protocol that Maemo Mapper doesn't understand. Since I don't have Windows to run the settings app that came with my GPS, I had to find the protocol description and write a Python script to switch it back into NMEA mode. Full story here: http://mg.pov.lt/blog/maemo-mapper.html
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2006-05-26
, 20:51
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Posts: 177 |
Thanked: 4 times |
Joined on Apr 2006
@ Wirral, UK
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#18
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Is there a way to generate a GPX route that touches user defined waypoints? Yesterday Maemo-mapper took me to my regular shop using a route I've never used before... and it took longer than normally.
I've planned a holiday route but gnuite's GPX generator insists to go around London clockwise but I want to go anticlockwise.
Is there a (free?) prog somewhere with more control over the route?
I've planned a holiday route but gnuite's GPX generator insists to go around London clockwise but I want to go anticlockwise.
Is there a (free?) prog somewhere with more control over the route?
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2006-05-26
, 21:00
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Posts: 1,245 |
Thanked: 421 times |
Joined on Dec 2005
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#19
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Originally Posted by 9a6or
You can set up a multi-segment route by Downloading the route in segments. For example, say you want to go from 123 Baker St. to 789 Butcher St., but you want to make sure to pass through 456 Baylor St. First, download the route from 123 Baker St. to 456 Baylor St. Then, download the route from 456 Baylor St. to 789 Butcher St. The second route will append to the first, and waypoint announcement should work when transitioning from the end of the first route to the beginning of the second route.Is there a way to generate a GPX route that touches user defined waypoints? Yesterday Maemo-mapper took me to my regular shop using a route I've never used before... and it took longer than normally.
I've planned a holiday route but gnuite's GPX generator insists to go around London clockwise but I want to go anticlockwise.
Is there a (free?) prog somewhere with more control over the route?
If you are satisfied with the result, you can save the new, two-segment route into a Route file. If you want, you can manually tweak the file to remove the "break" so that the directions now represent a single segment, from 123 Baker St. to 789 Butcher St.
Unfortunately, there is no means by which to control the exact directions that are generated.
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2006-05-26
, 21:02
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Posts: 190 |
Thanked: 5 times |
Joined on Nov 2005
@ Bee-u-tee-ful Garden Home, Oregon
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#20
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Originally Posted by 9a6or
It's a bit of a hack, but have you considered forcing the route you want to take by creating several routes (each one going part of the way you want) and then loading them one at a time?Is there a (free?) prog somewhere with more control over the route?
My understanding is that Maemo Mapper will combine routines if the are loaded individually. I've done the same sort of trick with Google Maps.
Brad.
May I also suggest that we have a look at www.eniro.se, the Swedish yellow pages with options to have route planning and also photos and maps or hybrid mode. Dont know if it is possible to "harvest" maps from there. Let me know if I can help beta test some settings.
Best regards, Rune