[Bug 29011] Non-standard serial baud rates are not reported correctly.

wine-bugs at winehq.org wine-bugs at winehq.org
Sun Nov 13 05:30:55 CST 2011


http://bugs.winehq.org/show_bug.cgi?id=29011

--- Comment #3 from John <jstutch at googlemail.com> 2011-11-13 05:30:55 CST ---
I have attached +comm output, sorry about the huge file. This was the output of
running the program, going to 'Options', selecting COM1, and clicking 'Test' to
test the interface. (I have a symlink in .wine/dosdevices/com1 to
/dev/ttyUSB0). A success message was displayed, following this, the interface
was tested again, this time a failure message was displayed.

Once the port has been tested (or accessed by the program) once, the baud rate
needs to be reset (e.g stty -F /dev/ttyUSB0 9600), before it can be tested (or
used) correctly again. As I mentioned, I have got this to work completely by
making the changes to serial.c detailed previously.

I don't think the giant warning is shown without +comm, but it is in the
attached log.

The program can be downloaded at
http://www.ross-tech.com/vcds-lite/download/index.html, some fairly detailed
usage instructions are on that site too. It will, however require a USB-OBD2
interface. The one I have is a cheap KKL one from eBay. It is an FTDI FT2322
with a 12V line driver interface. As the KKL interface is a half-duplex bus, I
think when testing the interface it puts some data onto the bus, and reads it
back, checking for noise/latency/etc, so you may get the program to report a
valid interface from a simple loopback interface. Certainly, using any valid
linux tty, the program attempts to set the 10.4Kbps, and will report the port
as OK (but interface not found), but only once before the baud is re-set
manually.

It seems this behaviour has been noted before, at
http://appdb.winehq.org/objectManager.php?sClass=version&iId=14255. Some seem
to have managed with the launcher script given there, but I couldnt get it to
work, even after fixing spelling mistakes, and it seems a bit of a hack anyway.

Thanks,

JStutch

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