[aprssig] D700-external PIC processing
jdw at eng.uah.edu
Sun Feb 11 09:38:49 CST 2007
On Feb 11, 2007, at 8:31 AM, Robert Bruninga wrote:
> Looks like CALL,LAT,LONG,SYMBOL,CSE,SPEED, then STATUS TEXT?
> My guess is that CSE is stored as 1-to-8 for the cardinatl
> points of the compass.
Not sure, but that could be for the on-screen compass. Actual course
is displayed as degrees on the detailed info screen.
> The above examples have no speed?
Yep, they're all fixed stations. I just grabbed the first three in
that old log file I had, without paying attention to the details.
When I captured the file I should have captured some raw packet data
from another TNC for correlation, but I didn't think of it at the time.
> But if this is true, then SOMONE should write a PIC processor to
> parse out of theese packets, any FREQUNCY info an either display
> it or something.
Unfortunately I couldn't figure out how to make data display on the
D700 control head. I specifically wanted to insert reports heard
from other frequencies to have a unified listing on the D700 control
A packet parser would be helpful, but I think the most useful thing
someone could do is reverse engineer the connection and protocol
between the display head and the radio. If we could wedge a
microcontroller in there, we'd have something _really_ useful. Given
their replacement cost, I'm not too keen on hacking at mine. (:
It would probably be easier just to create a new control head and
application interface (ala HamHud) and operate it that way.
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