Re: [Libusb-devel] "HID vendor request" question

[Xiaofan C. <xia...@gm...>]

On Wed, Dec 29, 2010 at 7:39 AM, Tyler W. Wilson <ty...@ty...> wrote:
> - In the wiki it says that "HID vendor requests are not implemented".
> How do we know which requests are vendor versus other? Is it just the
> Usage section of the report descriptor (0x09, 0x01)?
>

Please post the "lsusb -vvv" result for your device (you may need to
detach the kernel HID driver to get the HID report). That would help
to understand the device.

As for the limitation that "HID vendor requests are not implemented",
this means that if the request type is LIBUSB_REQUEST_TYPE_VENDOR,
then it is not supported by the libusb-1.0 Windows HID backend.
If the type is LIBUSB_REQUEST_TYPE_CLASS (eg: for the HID
class: input, output and feature report), it should work.

 302 enum libusb_request_type {
 303         /** Standard */
 304         LIBUSB_REQUEST_TYPE_STANDARD = (0x00 << 5),
 305
 306         /** Class */
 307         LIBUSB_REQUEST_TYPE_CLASS = (0x01 << 5),
 308
 309         /** Vendor */
 310         LIBUSB_REQUEST_TYPE_VENDOR = (0x02 << 5),
 311
 312         /** Reserved */
 313         LIBUSB_REQUEST_TYPE_RESERVED = (0x03 << 5)
 314 };



-- 
Xiaofan