Hi,

First thing to mention is that I've not had many/any dealings with
serial port stuff, so I'm just working from what I see.

I'm guessing you're working with pyserial - I don't see serial modules
in the core module docs, and a google of serialObject got me to the
pyserial page.

So, looking at the pyserial docs - in serialposix.py (which is what
you're ultimately going to be using as you're doing this on linux),
there seems to be a lot of stuff surrounding custom baud rates in
_reconfigurePort. Basically, when the object is constructed and open()
is called, _reconfigurePort is called.

One of the tasks of that function is to check the baud rate. First, it
checks to see if it's one of the preconfigured rates (those that are
returned by getSupportedBaudRates), and if not, it tries to configure
it using magic I don't understand (again, because I'm not used to
working with serial ports), and it only bombs out if it absolutely
can't do it.

So, with all of that said, it basically seems to be simply a case of
setting the baudrate attribute to 31250 and hoping for the best.
Chances are, it won't complain. :)

As I said, this is only from reading the code, not using it, so you
might need some more specific help, but it does look like it should
work.

Best of luck.
Aoife

2009/5/18 Harry Van Haaren <[email protected]>:
> Hey guys,
>
> I've managed to run myself into a lovely litte problem I think.
> I'm working on an Arduino project, in which I hope to use
> python to "understand" the MIDI messages the Arduino sends.
>
> The data will be coming in on /dev/ttyUSB0   (linux) which
> the python serial module opens no problem. Also when I call
> serialObject.getSupportedBaudrate  I get a tuple of all the
> supported rates.
>
> Unfortunalty 31250 baud isnt there... And the MIDI baudrate is 31250!
>
> So either: A:  I get over it, and reupload the code with a different
> baudrate
> each time I need to switch between debugging code with the
> PC and using the device in real life.
>      B:  There is some way to make python understand the 31250 baudrate?
> Google didnt show me any obvious "python midi baud rate" page..
>
> Cheers for reading, -Harry
>
> >
>

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