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Re: Where did time go in GGA?

From: Alexander Sack
Subject: Re: Where did time go in GGA?
Date: Mon, 4 May 2020 19:11:26 -0400

On Mon, May 4, 2020 at 6:45 PM Gary E. Miller <address@hidden> wrote:
Yo Alexander!

On Mon, 4 May 2020 18:11:06 -0400
Alexander Sack <address@hidden> wrote:

> $ gpsd -V
> gpsd: 3.20.1~dev (revision release-3.20-693-g679097b6c)
> $ gpspipe -R
> $GNGGA,220834.30,4144.21121860,N,09338.11362837,W,1,12,1.0,296.050,M,-31.164,M,,*4A
> $GNGGA,220834.40,4144.21121837,N,09338.11362416,W,1,12,1.0,296.043,M,-31.164,M,,*42
> $GNGGA,220834.50,4144.21121815,N,09338.11362000,W,1,12,1.0,296.036,M,-31.164,M,,*42
> $GNGGA,220834.60,4144.21121787,N,09338.11361584,W,1,12,1.0,296.030,M,-31.164,M,,*49
> $GNGGA,220834.70,4144.21121759,N,09338.11361168,W,1,12,1.0,296.023,M,-31.164,M,,*4F
> $GNGGA,220834.80,4144.21121730,N,09338.11360743,W,1,12,1.0,296.017,M,-31.164,M,,*46
> ...
> And before you ask Gary (I love ya), that is the ONLY NMEA sentence
> being omitted, i.e. that is the complete log.

Ouch.  Well then, of course you get no time.

Take a look at GGA and try to decode it by hand.  Do you see any date in
there?  Nope.  You have the hour, minute and seconds, but no year, month,
of day.  So not time.

> When I look at the TPV dictwrapper, there is no 'time' key. There was
> in 3.19. Also, 'status' is missing as well.

Yup.  Garbage in, garbage out.  Not time in, no status in, then no time
out and no status out.

> Is this regression? Should I file a bug?

Not a regression, not a bug.  At least not in gpsd.  What ever is only sending
you GGA is misconcifured.

I turned off RMC because it was causing the status bit to go wonky. I think you have fixed it in 3.20+ right? I turned RMC back on and things look good.


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