On Tue, 20 Jun 2017, Menga wrote:
I got the solution to the problem of interfacing Xastir to the SCS PTCIIpro
modem.
I was unable to use the standard serial TNC interface and a proper startup
file.
So I selected the serial KISS TNC interface recompiling Xastir by modifying
the init_kiss_string in the C file interface.c.
The two modifications were
char init_kiss_string[94];
sizeof(init_kiss_string),
"\x1BQ\rRESET\rTONES 4\rBRIGHT 6\rFSKA 145\rPSKA
175\rPAC TXL ASFK 800\rPAC\rUSER 0\rPRBOX 0\rBAUD R300\r@k\r"); // [ESC@K
sets tnc from terminal- into kissmode
Now the Xastir programmers will suggest me how to clean up the solution, to
make it general and store it in the repository
Glad you got it solved. I saw your message direct to me yesterday but have been
busy.
Xastir is set up to talk to KISS TNC's or minimally-TAPR2-compatible TNC's,
which included most out there. If you don't want to run in KISS mode then you
create the files as I suggested, but then the TNC has to be
TNC2-compatible-enough to understand the commands to switch between modes.
Sounds like that SCS TNC isn't.
As far as setting a TNC into KISS mode, that's done outside Xastir, often with
scripts. You can do that with the startup & stop files in Xastir, but if the
commands are anything really odd you might have fun getting the right bytes in
there (hex editor?).
Other people sometimes use separate programs or scripts to set up a TNC into
KISS mode or take it out of KISS mode when done running Xastir.
If you want to keep your patch for your own use, applying it to the latest
Xastir code as it changes: Create a branch in your local Git repository, merge
the new Xastir code into your branch periodically, then compile that. It's a
relatively painless method of maintaining your own custom mods as long as no
major changes are made to the base file(s) which might cause the merge to fail.
You're probably pretty safe in this case though.
--
Curt, WE7U. http://we7u.wetnet.net
Babysitting your tracker: http://info.aprs.net/index.php?title=ControlOperator
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