[wdmaudiodev] Re: USB - passing proprietary information using Windows 7 provided drivers

  • From: Tim Roberts <timr@xxxxxxxxx>
  • To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
  • Date: Wed, 12 Sep 2012 14:31:27 -0700

Bartosik Lukasz-ALB045 wrote:
> We are developing USB device which implements two USB classes Audio
> and Hid.
> We won't write our own drivers instead we will use drivers provided by
> Windows 7.
> Is there a way to pass proprietary information (like error/log
> messages) from a device to Windows
> using standard Windows 7 drivers and API ?

If you are using the standard drivers, then all you have are the
mechanisms in the USB standard, and operating system log messages are
not part of the standard.

If this is absolutely critical to you, you can always insert a filter
driver to communicate with the device using vendor control pipe
messages.  Of course, now you have to ship an INF file and worry about
signing, which sort of defeats the purpose of using the standard drivers
to begin with.

Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.

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