| Newsgroups |
gmane.comp.hardware.gps.opensource |
| Message-ID |
<[email protected]> |
Hi Scott,
Looking at you're results I would say you are not
tracking any real satellites, just noise. The fact
that you have sats 1-12 on you're channels is a
situation you would not get with real satellites. If
you look at the FAA site you will see that it is
extremely unlikely that they would all be in view at
any one time. I have a modified version of the
GPL-SRC that I run on the GPSCreations gps1201 board
which tracks better than the old GPL-SRC code. I can
send it you if you like. I am still working on the
clock drift and velocity solution though.
cheers
Mark
>------- Original Message -------
>From :
[email protected][mailto:[email protected]]
>Sent : 2/10/2010 1:00:02 PM
>To : [email protected]
>Cc :
>Subject : RE: opensource_gps Digest, Vol 62, Issue 1
>
>Send opensource_gps mailing list submissions to
[email protected]
To subscribe or unsubscribe via the World Wide Web, visit
http://lists.psas.pdx.edu/cgi-bin/mailman/listinfo/opensource_gps"
target="_new">
http://lists.psas.pdx.edu/cgi-bin/mailman/listinfo/opensource_gps
>
or, via email, send a message with subject or body
'help' to
[email protected]
You can reach the person managing the list at
[email protected]
When replying, please edit your Subject line so it is
more specific
than "Re: Contents of opensource_gps digest..."
Today's Topics:
1. Re: Porting OSGPS to ARM7 (scott nichols)
----------------------------------------------------------------------
Message: 1
Date: Tue, 9 Feb 2010 14:42:37 -0800
Hi Guys, I took a look at GPL-GPS fro arm but it seem
to be a pretty
different version of osgps so I went back to the
current osgps code
base.
When i am starting the receiver it runs for a few
minutes and the
status of the channels are moving between channel
state "acquisition"
and "confirm". They tend to not get to state
"pull-in". I am also
getting a lot of accumulator misses on a few of the
channels. But then
a couple of minutes go by and all of the channels are
in state "off".
Here is a snapshot of the output before all go to off:
OpenSource GPS Software Version 2.30
Thu Jan 1 00:00:06 1970
TOW 6
meas time 0.599998 error 0.000000 delta 0.000000
latitude longitude HAE clock
error (ppm)
0: 0: 0.00 0: 0: 0.00 0.00 -0.380000
Speed Heading TIC_dt
0.000000 0.000000 0.100000
tracking 0 status -1610460944 almanac valid 0 gps
week -522 alm_page 0
ch prn state n_freq az el doppler t_count n_frame
sfid ura page missed CNo
0 1 1 -3 0 0 0 0 0 0
0 0 2 0
1 2 1 -3 0 0 0 0 0 0
0 013392 0
2 3 1 3 0 0 0 0 0 0
0 0 2 0
3 4 1 -3 0 0 0 0 0 0
0 013391 0
4 5 1 -3 0 0 0 0 0 0
0 0 9555 0
5 6 1 -3 0 0 0 0 0 0
0 013391 0
6 7 1 0 0 0 0 0 0 0
0 0 1 0
7 8 1 0 0 0 0 0 0 0
0 013391 0
8 9 3 0 0 0 0 0 0 0
0 0 31 0
9 10 3 0 0 0 0 0 0 0
0 013390 0
10 11 3 0 0 0 0 0 0 0
0 0 1 0
11 12 3 0 -0 0 0 0 0 0
0 013390 0
GDOP= 0.000 HDOP= 0.000 VDOP= 0.000 TDOP= 0.000
As you can see, it seems to not have any real data yet.
My question is, what does this data tell someone more
comfortable with
osgps tell you? If anything. And does anyone have a
suggestion on what
to look for or what to debug to give clues on to if
the system is
seeing gps correlation data correctly?
Thanks for any insight, i am quite lost. (maybe pun
intended :)
-Scott
On Thu, Jan 14, 2010 at 10:01 AM, scott nichols
<[email protected]> wrote:
> Hello!
>
> I am starting the process of porting OSGPS to a
main loop style program
> running on an embedded ARM platform. I was
wondering if there is similar
> open source project anyone knows of using OSGPS and
ARM in a main loop?
> Forgive me if this is covered in the documentation,
I am off to read more
> now! Thanks!
>
> -Scott
>
>
>
------------------------------
_______________________________________________
opensource_gps mailing list
[email protected]
http://lists.psas.pdx.edu/cgi-bin/mailman/listinfo/opensource_gps
End of opensource_gps Digest, Vol 62, Issue 1
*********************************************