[ntp:questions] Motorola Oncore Surveyed Position

Miguel Gonçalves mail at miguelgoncalves.com
Tue Sep 6 13:23:24 UTC 2011


Hi Terje!

Thanks for your reply.

I switched again to mode 4 and started again to see if I missed something. I
believe I'll only have to wait 10000 seconds = 2 hours and 46 minutes... not
much. :-)

Unfortunatelly clockstats doesn't show position, only time. I believe this
is because it's in position lock (0D?) mode. Here's a sample:

55810 40276.220 127.127.30.0 3524296275.999957838 2011 249 11 11 16 15
rstat   08 dop  0.0 nsat 10,2 traim 1,0,1 sigma 77 neg-sawtooth -24 sat
35000080

By the way... I was looking at the clockstats file and noticed that when I
switched to mode 4 as I said earlier I got this

55810 40560.366 127.127.30.0 ONCORE[0]: Loading Posn from SHMEM
55810 40560.367 127.127.30.0 ONCORE[0]: Setting Posn and Time after Loading
Almanac
55810 40562.091 127.127.30.0 ONCORE[0]: Posn:
55810 40562.091 127.127.30.0 ONCORE[0]: Lat = N  41.1745319deg,    Long =
W   8.6560764deg,    Alt = 146.72m (481.36ft) GPS
55810 40562.091 127.127.30.0 ONCORE[0]: Lat = N  41deg 10.4719m,   Long =
W   8deg 39.36458m,  Alt =  146.72m ( 481.36ft) GPS
55810 40562.091 127.127.30.0 ONCORE[0]: Lat = N  41deg 10m 28.32s, Long =
W   8deg 39m 21.88s, Alt =  146.72m ( 481.36ft) GPS
55810 40564.365 127.127.30.0 ONCORE[0]: Waiting for Almanac
55810 40567.365 127.127.30.0 ONCORE[0]: Have now loaded an ALMANAC
55810 40567.365 127.127.30.0 ONCORE[0]: state = ONCORE_RUN

It seems this is my location... :-) Now you know where I live! :-)

So the position is stored in the shared memory and when I reset the unit
(mode 4) it uses the position stored in there.

Anyone help care to comment this?

Cheers,
Miguel

On 6 September 2011 12:33, Terje Mathisen <"terje.mathisen at tmsw.no"@
ntp.org> wrote:

> Miguel Gonçalves wrote:
>
>> 2. When surveying finishes (ONCORE_SS_DONE) where can I get the surveyed
>> position to save it to /etc/ntp.oncore.0? What is the best procedure? I
>> don't want to survey every time I power up the unit... (the unit has no
>> backup power)
>>
>
> Afair the position got written to the log file at that point, then you only
> have to copy it into the config file and change mode to "use surveyed
> position".
>
> It is 10+ years since I last needed to do this, so I might be
> mis-remembering, in which case you might find the (raw) info you need in the
> clockstats log?
>
> Terje
>
> --
> - <Terje.Mathisen at tmsw.no>
> "almost all programming can be viewed as an exercise in caching"
>
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