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Re: Getting timeout error while reading data.
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From: |
Gary E. Miller |
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Subject: |
Re: Getting timeout error while reading data. |
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Date: |
Sat, 16 Jul 2022 21:37:59 -0700 |
Yo Bhavna!
On Sun, 17 Jul 2022 09:59:51 +0530
Bhavna Harani <haranibhavna111@gmail.com> wrote:
From: "Gary E. Miller" <gem@rellim.com>
To: Bhavna Harani <haranibhavna111@gmail.com>
Subject: Re: Getting timeout error while reading data.
Date: Sat, 16 Jul 2022 11:49:21 -0700
Organization: Rellim
Yo Bhavna!
On Sat, 16 Jul 2022 18:27:27 +0530
Bhavna Harani <haranibhavna111@gmail.com> wrote:
> > I am giving data dynamically to gpsd over udp by the below command.
> > gpsd -D 1 -n udp://127.0.0.1:8080
>
> You skipped over some important lot of details. What version of gpsd?
> What is
> the source for "udp://127.0.0.1:8080"
>
> version: 3.24.1
There is no 3.24.1 yet. I assume you compiled yourself from git?
`
> source : created client application which write raw NEMA packet at
> 127.0.0.1:8080
What version of NMEA?
Can you share the source? Or some of its output?
> > every 1 second I am feeding data to udp socket.
>
> How? What sort of data?
> 1083 NEMA string ,there is some utility which generates sample data.
Ugh. We have found many broken NMEA simulators.
> > When I tried to read
> > the data
> > using gpslib I got a timeout error.
>
> Getting way ahead of yourself. Don't bother to touch libgps until
> the "-D 4" log from gpsd looks good. Then move on to cgps, befoure
> looking at libgps.
> ok
And what did you see?
[...]
> > I have tried with "gpspipe -r" ,I was able to get a raw string
> > which I parsed dynamically.
>
> Your C code asks for JSON, but you compare to psuedo NMEA. Apples and
> oranges.
> - I was checking the gpspipe client and my client application.
> gpspipe client
> was getting data (in both options -w -r) ,my client application got
> timeout.
When gpspipe gives good data, but your client does not work, that pretty
much narrows it down to your client. That "-D 4" log might help.
Care to share what gpspipe showed you? My mind reading is flakey today.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
gem@rellim.com Tel:+1 541 382 8588
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"If you can't measure it, you can't improve it." - Lord Kelvin
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