On Tue, Nov 23, 2010 at 12:33 PM, Andrew Errington
<a.erring...@lancaster.ac.uk> wrote:

>    Interface Descriptor:
>      bLength                 9
>      bDescriptorType         4
>      bInterfaceNumber        3
>      bAlternateSetting       0
>      bNumEndpoints           1
>      bInterfaceClass         3 Human Interface Device
>      bInterfaceSubClass      0 No Subclass
>      bInterfaceProtocol      0 None
>      iInterface              0
>        HID Device Descriptor:
>          bLength                 9
>          bDescriptorType        33
>          bcdHID               1.00
>          bCountryCode            0 Not supported
>          bNumDescriptors         1
>          bDescriptorType        34 Report
>          wDescriptorLength      50
>         Report Descriptors:
>           ** UNAVAILABLE **

You will have to detach the kernel HID driver in order
to print out the report descriptors (even if you are root).

>From the report descriptors of the two device, you might
get some hints, but just "might".

>      Endpoint Descriptor:
>        bLength                 7
>        bDescriptorType         5
>        bEndpointAddress     0x83  EP 3 IN
>        bmAttributes            3
>          Transfer Type            Interrupt
>          Synch Type               None
>          Usage Type               Data
>        wMaxPacketSize     0x0004  1x 4 bytes
>        bInterval               8
> cannot read device status, Operation not permitted (1)



-- 
Xiaofan

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