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Re: [gpsd-dev] Please review Miroslav's attempted fix.
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From: |
Gary E. Miller |
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Subject: |
Re: [gpsd-dev] Please review Miroslav's attempted fix. |
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Date: |
Tue, 26 Aug 2014 12:35:45 -0700 |
Yo Miroslav!
On Fri, 22 Aug 2014 14:26:36 +0200
Miroslav Lichvar <address@hidden> 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
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