#16 Connection to GPSD

[Anonymous]

While playing with Kismet and qpegps at the same time, i saw
that qpegps just works with the supplied gpsd. No other older
or newer versions seems to connect to.
I think the problem is, that qpegps leaves the "\n" from the "\r\n"
in the socket buffer and therefore there is never ever a new
(complete) line to read. I didn't track down more, but if you apply
the following patch, you get a "works for me" solution...
----- patch -----
--- client.org.cpp 2003-12-19 10:08:32.000000000 +0100
+++ client.cpp 2003-12-19 10:09:05.000000000 +0100
@@ -287,6 +287,7 @@
dataPos = dataStr.find('=')-1;
}
}
+ while( socket->getch()>0 ) { ; }
if(positionChanged)
{
gpsData->adjustDatum();

----- end patch -----

[Jose Bernardo B R Silva]

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For me it doesn't fix the comunication with gpsd 1.10
completely. Qpegps reads something from gpsd, so that the
gpsd "light" turns green, and now stays green, but it is
still unable to get a position fix (or anything at all).

[Jose Bernardo B R Silva]

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The following patch fixes qpegps to work with gpsd 1.10:

--- qpegps/client.cpp.orig 2004-02-18 20:24:24.000000000 +0000
+++ qpegps/client.cpp 2004-03-10 23:29:40.190749312 +0000
@@ -128,7 +128,7 @@
widgetToReEnable = application->currentPage();

// start the timers
- readyToConnect("SPAVHBDX", 250);
+ readyToConnect("SPAVHBDXR", 250);

// mode enabled
d_opMode = MODE_SNIFF;
@@ -140,6 +140,7 @@
if (d_opMode == MODE_SNIFF) {
// switch off sniffing
d_opMode = MODE_NORMAL;
+ gpsdRequest = "SPAVHBDX\n";
if (widgetToReEnable)
application->tabChanged(widgetToReEnable);
}
@@ -287,6 +288,7 @@
dataPos = dataStr.find('=')-1;
}
}
+ while( socket->getch()>0){;}
if(positionChanged)
{
gpsData->adjustDatum();

[Jose Bernardo B R Silva]

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Please ignore my patch. I've just submitted to the gpsd
mailing list a patch that, together with the first patch
submitted here, should allow gpsd to work with qpgs.

[Nobody/Anonymous]

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I have exactly the same problem, which you mentioned below
(18.2.2004), when trying to use qpeGPS on my Zaurus
(SL-5500) with a Holux GM-270 (this problem came only after
several successful uses).
As I could not find the gpsd mailing list, nor a new version
of this program, could you tell me if your patch has now
been integrated in a new version?
Could it be possible to get a compiled version of the patches?
I am eager to use my qpeGPS again!

Pierre-f

[Jose Bernardo B R Silva]

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user_id=666930

Pierre, I'll try and put a gpsd ipk with the patches on a
web site today. I'll also check if I can find your message
on the OE/Zaurus mailing lists, and reply to it with the url.

[Yann Dirson]

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user_id=38086

I have tried qpegps 0.9.2.3.3 and gpsd 2.30, and it seems I
get a similar problem:

- running "gpsd -n -N -D4" shows GSA packets with 5 sats,
which ought to be enough
- running qpegps shows a green light for gpsd but everything
else is red
- running cgps does show a reasonable position

Should I investigate, or is there some working solution
somewhere already ?

[Yann Dirson]

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It is easy to check that socket->readLine() does not ineed
has th bahaviour described. Not being familiar with the
code yet, I can't see what the change to
Client::endSniffMode() brings, but just adding 'R' to the
request as show by jbbrs' patch does the trick for me. That is:

diff -ru qpegps_my/client.cpp qpegps-0.9.2.3.3+/client.cpp
--- qpegps_my/client.cpp 2006-02-02
17:04:37.000000000 +0100
+++ qpegps-0.9.2.3.3+/client.cpp 2006-02-14
23:30:33.000000000 +0100
@@ -130,7 +130,7 @@
widgetToReEnable = application->currentPage();

// start the timers
- readyToConnect("SPAVHBDX", 250);
+ readyToConnect("SPAVHBDXR", 250);

// mode enabled
d_opMode = MODE_SNIFF;

[Rob Neild]

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user_id=450613

Is anything happening with this ? I just had the problem -
with the gpsd on open zaurus, and had to download the
replacement gpsd on the qpegps sourceforge page. All works
now, but should work with out hastle.