On Sun, Mar 22, 2020 at 08:26:25PM +0000, Martin wrote:
> Hello Otto,
>
> I can't share any coordinates, but after analyzing NMEA messages from
> receiver I see the correct UTC time in first field of $GPGGA, $PQXFI
> (Qualcomm extended fix information), $GNSNS sentences. In repeating sentences
> time data changes every second as it should be. System's time in sync with
> NTP pool currently, so it has minimum delta possible.
>
> $GPGGA,194359.00,_coordinates_,.....
> $PQXFI,194359.00,_coordinates_,.....
> $GNSNS,194359.00,_coordinates_,.....
> ...
> $GPRMC,194359.00,_coordinates_,.....
> ...
> $GPGGA,194400.00,_coordinates_,.....
> $PQXFI,194400.00,_coordinates_,.....
> $GNSNS,194400.00,_coordinates_,.....
> ...
> $GPRMC,194400.00,_coordinates_,.....
>
Double sigh. The datestamp in the $GPRMC message is important.
But I give up, you are only making things difficult.
-Otto
> Any way to perform manual 'reset' timedelta to any 'default' value?
>
> Martin
>
> ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> On Sunday, March 22, 2020 3:28 PM, Otto Moerbeek <o...@drijf.net> wrote:
>
> > On Sun, Mar 22, 2020 at 03:22:40PM +0000, Martin wrote:
> >
> > > The position is absolutely correct. I forgot to mention I changed
> > > Latitude and Longitude by different values.
> > > The timedelta is incorrect and it's only the question why.
> > > I missed a moment when huge time skew appeared. Just system clock was
> > > changed significantly to incorrect value. Now ntpd.conf set to NTP pool,
> > > but hope I can fix radioclocks.
> > > Martin
> > > ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
> > > On Sunday, March 22, 2020 12:54 PM, Otto Moerbeek o...@drijf.net wrote:
> > >
> > > > On Sun, Mar 22, 2020 at 12:19:39PM +0000, Martin wrote:
> > > >
> > > > > hw.sensors.nmea0.indicator0=On (Signal), OK
> > > > > hw.sensors.nmea0.timedelta0=619313970.981246 secs (GPS autonomous),
> > > > > OK, Sun Mar 22 12:47:08.981
> > > > > ^^^^^^
> > > > > hw.sensors.nmea0.angle0=10.0 degrees (Latitude), OK
> > > > > hw.sensors.nmea0.angle1=20.0 degrees (Longitude), OK
> > > > > hw.sensors.nmea0.distance0=30.0 m (Altitude), OK
> > > > > hw.sensors.nmea0.velocity0=0.000 m/s (Ground speed), OK
> > > > > It works for about two years before like a charm, but now timedelta
> > > > > 619313970.981246 secs.
> > > > > Tried to change GPS receiver, no effect.
> > > > > Martin
> > > >
> > > > You position is also suspect. Can you run cu on the port the GPS is
> > > > atteched to and get a snippet of the output?
> > > > -Otto
> >
> > Sigh, you are making troubleshooting this harder than needed by
> > editing output without saying so. Also, I asked for an NMEA output
> > log.
> >
> > Uncomment your ldattach line in /etc/ttys
> > kill -1 1
> > cu -l ttyXX -s 4800
> >
> > (Change speed to match your device). Without log I cannot help.
> >
> > -Otto
>
>
