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List:       gpsd-dev
Subject:    Re: [gpsd-dev] Please review Miroslav's attempted fix.
From:       "Gary E. Miller" <gem () rellim ! com>
Date:       2014-08-26 19:35:45
Message-ID: 20140826123545.72ca1a81 () rellim ! com
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Yo Miroslav!

On Fri, 22 Aug 2014 14:26:36 +0200
Miroslav Lichvar <mlichvar@redhat.com> wrote:

> >From ppsthread.c:
> 
> /*
>  * FIXME! The GR-601W at 38,400 or faster can send the
>  * serial fix before PPS by about 10 mSec!
>  */
> 
> This probably explains why it doesn't work for you. Adding a
> time_offset function to the ubx driver might fix this.

Please no!!!  time_offset is to be applied to the NMEA just before
it goes to ntpd/chrony.  Applying time_offset before computing
PPS will blow up all the assumptions.

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

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