On 4/13/07, Mark Heath <mark.heath@xxxxxxxxx> wrote:
> I am looking into the possibility of writing a serial port MIDI driver
for
> Windows Vista, as the Korg X5D serial port driver will not install on
Vista.
> I am very new to drivers, so please excuse my ignorance if these are
stupid
> questions
>
> Am I right in thinking I would need to create a PortCls driver with a
MIDI
> miniport driver, or is it possible for me to create something using the
user
> mode driver framework?
I am a newbie too, but I think that I can fortunately answer this
question:
It is unclear to me whether you want to write a MIDI application or
whether you want to write a driver. If you do want to write a driver,
then your only recourse is to create a PortCls driver with a MIDI
miniport driver (WDM, not even KMDF).
Using an existing serial port for the purpose of passing MIDI data,
however, can be implemented as a user-mode program.
Again, it is possible that I misunderstood you, so please take the
above with a grain of salt.
> Second, do I need to learn some kind of kernel mode API for reading /
> writing to the serial port, or is there a way of simply writing to it as
> though it were the UART on a PCI soundcard?
Reading and writing from/to the serial port in user mode is as simple
as using CreateFile() and related Win32 functions:
http://www.codeproject.com/system/chaiyasit_t.asp
However, if what you really want to do is write a PortCls MIDI
miniport driver, then you must study WDM (mind boggling new
terminology for a newbie).
Good luck!
Don
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