On Tuesday 18 April 2006 07:10, Aaron Krister Johnson wrote:

> I'd like to use my serial port (/dev/ttyS0) for send MIDI data to Csound, 
> which worked fine in Csound4 (simple--- "-M/dev/ttyS0" and you're good to go)

Well, I am not sure if ALSA can use the serial port devices for MIDI,
but you can work around the issue by piping MIDI data from /dev/ttyS0
to a virtual MIDI or MIDI through device, for example:

  dd if=/dev/ttyS0 of=/dev/snd/midiC1D0 bs=1

> Why is such a simple thing so impossible with Csound5? I tried the 
> "-+rtmidi=alsa -Mhw:1,0" options, and Csound5 doesn't even recognize that I 
> have a virmidi driver in the kernel, complaining of no such device.

Did you try using the PortMidi driver (which is the default) ?
If you do use -+rtmidi=alsa then make sure that you select the right
device name. Also, the virmidi driver in ALSA tends to behave in a
somewhat buggy and inconsistent way; I often need to use hacks like
this to pipe data from one virmidi port to another, and only then can
I read MIDI:

  dd if=/dev/snd/midiC1D0 of=/dev/snd/midiC1D1 bs=1

> I tried the "-+rtmidi=null -M/dev/ttyS0" line, and that failed too....why is 
> this so hard?

The 'null' MIDI driver, as its name says, is a dummy one, so you cannot
expect it to read or write any actual MIDI devices.

If you still cannot solve the problem, then the Csound4-style MIDI I/O
that uses files in /dev can easily be added back as an -+rtmidi option.


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