[tacgps] TAC-2 Oncore serial

[Pete Ashdown]

On 07/16/2011 05:09 AM, Thomas Laus wrote:
> Pete Ashdown [pashdown at xmission.com] wrote:
>> Thanks for your suggestion.  I am running Linux and I have a Garmin GPS-18
>> on COM2 (ttyS1) and it is functioning just fine.  I will try testing the
>> cable, but I have tried two different cables to no avail.
>>
> Pete:
> The command to change modes from idle to position mode is @@Cg
>
> The Showtime DOS program made this happen when switching the navigation
> mode from NMEA to Motorola Binary or back.  The WinOncore12 program
> can send the binary commands in a window.  You will need a Windows
> computer with a serial port to run WinOncore or an old DOS computer to
> load Showtime to get your receiver out of the idle mode.  This mode is
> unique to the VP vintage and was not available in the later receivers.
>
> Tom KH6ILT

Shouldn't ntpd be able to do this?  My old Linux 2.4 box had no problem
communicating with the TAC-2 Oncore, but I don't see any reference to
"@@Cg" in the refclock_oncore.c code.  I've been using minicom (9600/8N1)
to try and communicate with it, and @@Cg doesn't appear to do anything. 
I've tried switching the TX/RX via JP1 and still can't get anything to
work.  I also tested each pin on the cable today and it all looks good. 
Hair pulling problem!


-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 254 bytes
Desc: OpenPGP digital signature
URL: <http://www.tapr.org/pipermail/tacgps/attachments/20110719/9efd80b2/attachment.pgp>