Re: [libusb] Windows composite device fix

[Tim R. <ti...@pr...>]

Paul Qureshi wrote:
> How do you send the DFU_DETACH command? If the device is composite with say
> HID and WinUSB, then WinUSB can't open it to send the DFU_DETACH command.
> At least that's my experience here with Windows 7 x64.

You have WinUSB on the DFU interface, right?  Then why do you need to
open the composite device at all?  DFU_DETACH gets sent to the control
endpoint, which is available to ALL interfaces.  You just have to put
the right interface number in the request, and because usbccgp tweaks
the descriptors, that interface number might just be 0.

-- 
Tim Roberts, ti...@pr...
Providenza & Boekelheide, Inc.