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[aprssig] TNC command formats

scott at opentrac.org scott at opentrac.org
Thu Mar 17 14:40:43 UTC 2005


I think a hybrid might work.  Define a command that selects the 'current'
port, but override it with the extra parameter like Wes suggested.  That
way, single-port software would still work, and by setting that current port
manually, you could select which port it was controlling.  Just make my
command line parsing a little more complicated.

As for cross-port WideN digipeating, those requests will be Henk's problem.
=]  If at all possible, I don't want to have to modify any of the Digi_Ned
code, so as new versions become available, they can just be dropped in.

Scott
N1VG

-----Original Message-----
From: aprssig-bounces at lists.tapr.org
[mailto:aprssig-bounces at lists.tapr.org]On Behalf Of Bill Herrmann
Sent: Wednesday, March 16, 2005 10:35 PM
To: TAPR APRS Mailing List
Subject: Re: [aprssig] TNC command formats


At 03:05 PM 3/16/2005 -0500, Wes Johnston wrote:
>I see where you are coming from about multiple ports delimited by the /,
but I
>also worry about having a command that must be issued in the right context.

It works pretty well in IOS but typically you're changing a couple of
things at a time. I definitely agree with the / as used in Kantronics has
oddities. (Ask me how many things muck up with my 3 port KPC9612+...)

>I think the solution would be to add an extra variable to the command....
>
>HBAUD 0 1200
>HBAUD 1 9600

This works but could get odd for a single port device. You may want to
handle the case where it is optional for a single port device. (Probably
want to permit it though for consistency.)

>Are you going to support digipeating?  6-pack?  if you do digipeating,
>will you
>have a rule set for each port with a bit map of which ports something heard
on
>port X should be digipeated to?

...and if you do support cross-port digipeating make sure to allow WideN
style digipeating across ports. The 9612+ can't...

Bill



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