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Re: [gpsd-dev] [PATCH] [log.chk] [TPV timing] implement $GPVTG message,

From: teyrana
Subject: Re: [gpsd-dev] [PATCH] [log.chk] [TPV timing] implement $GPVTG message, and proper timing for output "TPV" messages
Date: Sat, 26 May 2018 18:43:26 -0400

Hey guys,

I was looking through gps.h, and I notice that " struct navdata_t {" @ line 1849 has a 'compass_heading' field. Are you okay with storing the GPVTG data there?


p.s. FYI: compass 'dip', (aka compass inclination) is in the 'struct attitude_t', while the other compass deviation & variation are in the different struct: 'navdata'.

Daniel Williams
858-220-8134 (Mobile)

On Fri, May 18, 2018 at 2:19 PM, Gary E. Miller <address@hidden> wrote:
Yo teyrana!

On Fri, 18 May 2018 09:01:57 -0400
teyrana <address@hidden> wrote:

> > It reports track in true AND magnetic.  It reports Speed in knots
> > and km/h.
> Yes,  it reports true-track and magnetic-track.  We agree on this.
> The magnetic track, though, where should that be written?
> *Specifically*, which member of which struct? 

You are right, no good place.  After your patch gets added to git head
I'll add a trackmag to the TPV message.

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        address@hidden  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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