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usb composite device question?
Posted by cyang on January 16th, 2004


Hi,

We have a device which have three interfaces, 0 for video, 1 for audio control, and 2 for audio. We want to control audio and video by ourselves, so we don't want usbccgp to install. How to get our driver to be loaded? Usb.inf has an blank line at the end (our driver is not signed), device configuration bDeviceClass is 0(and can not be changed). All three interfaces bDeviceClass are 0xff.


I tried several way;

1: In inf
%WisGo_7007_DeviceDesc%=DrvInstall,USB\VID_0EB1&PI D_7007&REV_0200
Our driver is not loader, I got "Cannnot install this hardware".

2:If I change our inf to
%WisGo_7007_DeviceDesc%=DrvInstall,USB\VID_0EB1&PI D_7007&REV_0200&MI_00
%WisGo_7007_DeviceDesc%=DrvInstall,USB\VID_0EB1&PI D_7007&REV_0200&MI_01
%WisGo_7007_DeviceDesc%=DrvInstall,USB\VID_0EB1&PI D_7007&REV_0200&MI_02
I got loaded three time each time I got different interface information. But that was three different device context, so I really need to be loaded by hub not by usbccgp.

3:If inf only have
%WisGo_7007_DeviceDesc%=DrvInstall,USB\VID_0EB1&PI D_7007&REV_0200&MI_00
I can not get interface 2 information that is the audio pipe.



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