[alsa-devel] How to add a new MIDI device to the usbaudio driver

Clemens Ladisch clemens at ladisch.de
Wed Aug 24 18:01:58 CEST 2011

Kristian Amlie wrote:
> On 08/24/11 13:44, Clemens Ladisch wrote:
> > Kristian, what do the .inf files that come with the Windows driver say?
> I have attached the three files that come with the installation. I'm not
> sure what to look for myself, I'm afraid.

ftdiport.inf says:
| HKR,,"ConfigData",1,11,04,00,00,10,27,00,00,88,13,00,00,C4,09,00,00,E2,04,00,00,71,02,00,00,38,41,00,00,9C,80,00,00,4E,C0,00,00,34,00,00,00,1A,00,00,00,0D,00,00,00,06,40,00,00,03,80,00,00,00,00,00,00,D0,80,00,00

These are just the standard baud rates.  But the driver doesn't expose
a COM port with selectable baud rates anyway.

The dmusftdi.sys driver was written by Starr Labs.  I guess it manually
sets a custom baud rate.

I'll look into how to set a custom baud rate.


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