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List:       gpsd-dev
Subject:    Re: [Gpsd-dev] Receiving multiple NMEA sentences with one read
From:       "Chris Kuethe" <chris.kuethe () gmail ! com>
Date:       2007-08-25 16:28:16
Message-ID: 91981b3e0708250928ub02ab7doa7c6576bd26ee3be () mail ! gmail ! com
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On 8/25/07, Rob Neild <s1@bigbob.org.uk> wrote:
> I debugged a problem with one of my bluetooth gps receives (a qstarz
> BT-Q810) to gpsd occasionally receiving multiple NEMA sentences when
> it does one "read". It doesn't seem to be able to parse multiple
> sentences from one read.
>
> I see the buffer, which is normally used to just store sentence
> fragments, rises up to a large value.
>
> I temporarily solved the problem by reducing the read buffer to 20
> bytes. That way I guarantee that I can't get multiple sentences.
> Instead I get lots of fragments.
>
> Has anyone seen this before? Any opinions?

When I do insane things, like telling gpsd to open a 600MB file full
of NMEA and use that as a device, yes, I see multiple sentences, but
as best I can tell, they are being parsed correctly (and
individually).

Does this happen with gpsd from SVN? Can you send me a log of this
happening (yes, I know it'll be big, that's ok)?

CK

-- 
GDB has a 'break' feature; why doesn't it have 'fix' too?
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