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Re: DBT sentences


From: Gary E. Miller
Subject: Re: DBT sentences
Date: Wed, 16 Jun 2021 13:04:43 -0700

Yo Владимир!

On Wed, 16 Jun 2021 22:54:42 +0300
Владимир Калачихин <v.kalachikhin@gmail.com> wrote:

> 16.06.2021 22:47, Gary E. Miller пишет:
> > Each JSON, like TPV, specifies which device it is from.  
> 
> Ok, but on this: https://gpsd.gitlab.io/gpsd/gpsd_json.html#_tpv said 
> that the "time" field not always present.

Correct.

> When "epoch" start in this case?

Your guess is as good as mine.  Not all GNSS receivers send any time
at all when they have no fix.  If yours receiver sends time, then TPV
will have "time".

gpsd can only output what is input to it.  No time in leads to no time out.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
        gem@rellim.com  Tel:+1 541 382 8588

            Veritas liberabit vos. -- Quid est veritas?
    "If you can't measure it, you can't improve it." - Lord Kelvin

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