Re: [Libusb-win32-devel] Extra endpoints on HID mouse device

[Stephan M. <ste...@we...>]

I'm no HID expert, but I think what you're trying to accomplish can
be done completely without libusb-win32:

Solution 1): Add feature reports to your mouse. So that you can use
Windows' HidD_SetFeature() and HidD_GetFeature() API functions
to send vendor specific commands to your device (I haven't done this
on my own, so I don't know if this solution actually works).

Solution 2.) If 1.) doesn't work, then move your 'control endpoint' to a
seperat interface that exposes itself as a vendor specific HID, i.e. build
a composite device that consist of a HID mouse and of a custom HID.
Then use the second custom HID interface to send your vendor specific
commands.

Stephan
 

> Hello,
> 
> I am developing an USB pointer device. The device acts as a 'normal'
> UBS mouse, so it is recognized by every OS without using special
> drivers. This all works fine.
> 
> I need to be able to change configuration settings on the device as
> well. For this I added an extra OUT endpoint where I can send special
> commands to; this is used for configuring the device and uploading new
> firmware.
> 
> With linux, the HID mouse is claimed by the usbhid driver right away,
> but using the usb_detach_kernel_driver_np() function I can still take
> control over the device. libusb-win32 does not support this call,
> however.
> 
> Summarizing: I want the normal windows driver to handle my mouse, but
> still be able to talk to the other endpoints using libusb.  What would
> be the best way to handle this with libusb-win32 ?
> 
> Thank you very much,
> 
> 
> 
> -- 
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