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Re: [gpsd-users] Valid data in gps_data_t struct

From: Gary E. Miller
Subject: Re: [gpsd-users] Valid data in gps_data_t struct
Date: Sat, 25 May 2019 12:12:34 -0700

Yo Massimiliano!

On Sat, 25 May 2019 19:46:13 +0200
Massimiliano Fago <address@hidden> wrote:

> how I can know if pps.clock, dop.vdop, pps.real data in my gps_data_t
> struct are valid?

Depends on your definition of 'valid'.  

All the DOPs are set to NAN if they are unknown.

struct pps is a timedelta_t, so valid if the two times being subtracted
are themselves valid.  Also, struct pps is in a union, so only use it
directly after computing it.

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