Re: [gpsd-dev] PPS offset fields and regression testing

[Gary E. Miller]

Yo Eric!

On Mon, 25 Nov 2013 18:55:49 -0500
"Eric S. Raymond" <address@hidden> wrote:

> Gary E. Miller <address@hidden>:
> > > 1. You have a serial GPS that emits Garmin binary packets, with
> > > DLE-stuffing and a checksum.
> > 
> > Serial is not the problem, USB Garmin is.
> 
> There are two different problems I have in mind. One is verifying
> that the driver's packet-inspection logic doesn't regress between
> releases.  For that purpose, serial packets are sufficient and no
> handshaking are sufficient.

Thus fixing the problem we usually don't have and ignoring the
one we usually have.

> > I can capture it, but the key part, the part that keeps breaking, is
> > the ACK/NACK, and no way to capture that so gpsfake can duplicate
> > it.
> 
> The duplication does not have to occur for the test to be useful.  The
> Trimbles like to do elaborate handshakes too, but a Trimble packet log
> is still a useful regression-test load without them. Verifying that
> it still extracts the same navigation-solution bits to the same cooked
> data that it did N releases ago is the point.

So tell me how I should capture it.   Just remember it has to be through gpsd
so the ACK/NAKs keep the data coming.

RGDS
GARY
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Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97701
        address@hidden  Tel:+1(541)382-8588

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