2.40dev/SVN

[Gary E. Miller]

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Yo Eric!

I had a chnace to take a quick look at the Garmin Serial binary
driver in the latest 2.40dev.  It looks like something simple got unhinged, but not sure where.

here is the -D 6:

gpsd: /dev/ttyS0 is known to be Garmin Serial
gpsd: /dev/ttyS0 is known to be Garmin Serial
gpsd: /dev/ttyS0 is known to be Garmin Serial
gpsd: /dev/ttyS0 is known to be Garmin Serial
gpsd: /dev/ttyS0 is known to be Garmin Serial
gpsd: /dev/ttyS0 is known to be Garmin Serial
gpsd: /dev/ttyS0 is known to be Garmin Serial
gpsd: /dev/ttyS0 is known to be Garmin Serial
gpsd: Garmin n= 0x46\x0a 1033409ca288440021914165a04741b4af524101008078e7ffffa7b34049a2622f4b9de83f2404858b3cf000c00000000000000000000000002f16a1410f00381c00005c1003
gpsd: /dev/ttyS0 is known to be Garmin Serial
gpsd: <= GPS: \x103@\xfff\xfff\xfffDgpsd: unknown sentence: "\x103@\xfff\xfff\xfffD"

So the bit stream is detected.  The packet is accepted and discarded in
packet.c on line 1192:
                packet_accept(lexer, GARMIN_PACKET);
                packet_discard(lexer);

But the germin parser garmin_ser_parse() is never called.  Any idea where
I should look for that not happening?

RGDS
GARY
- ---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
        gem@...  Tel:[phone]
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[Eric Raymond-3]

Gary E. Miller <gem@...>:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Yo Eric!
>
> I had a chnace to take a quick look at the Garmin Serial binary
> driver in the latest 2.40dev.  It looks like something simple got unhinged, but not sure where.
>
> here is the -D 6:
>
> gpsd: /dev/ttyS0 is known to be Garmin Serial
> gpsd: /dev/ttyS0 is known to be Garmin Serial
> gpsd: /dev/ttyS0 is known to be Garmin Serial
> gpsd: /dev/ttyS0 is known to be Garmin Serial
> gpsd: /dev/ttyS0 is known to be Garmin Serial
> gpsd: /dev/ttyS0 is known to be Garmin Serial
> gpsd: /dev/ttyS0 is known to be Garmin Serial
> gpsd: /dev/ttyS0 is known to be Garmin Serial
> gpsd: Garmin n= 0x46\x0a 1033409ca288440021914165a04741b4af524101008078e7ffffa7b34049a2622f4b9de83f2404858b3cf000c00000000000000000000000002f16a1410f00381c00005c1003
> gpsd: /dev/ttyS0 is known to be Garmin Serial
> gpsd: <= GPS: \x103@\xfff\xfff\xfffDgpsd: unknown sentence: "\x103@\xfff\xfff\xfffD"
>
> So the bit stream is detected.  The packet is accepted and discarded in
> packet.c on line 1192:
> packet_accept(lexer, GARMIN_PACKET);
>                 packet_discard(lexer);
>
> But the germin parser garmin_ser_parse() is never called.  Any idea where
> I should look for that not happening?

Yes.  Near line 50 of drivers, where it says:

        /*
         * Dispatching on Garmin packets here causes a nasty configure
         * loop. It's not clear this is the right way to break the
         * loop or whether it merely evades the problem and breaks
         * autoconfiguration, but it will have to do until a Garmin
         * expert can grok the problem better.
         */

Alas for you, you're the Garmin expert...
--
                <a href="http://www.catb.org/~esr/">Eric S. Raymond</a>
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