Re: [Libusb-devel] Hybrid CDC + DFU device and libusb

[Nathan H. <hj...@me...>]

In the case if MacOS a driver (both interface and device) can effectively claim Ep0 by opening and holding onto a device (ignoring USBDeviceOpenSeize). I can't remember if any of the CDC drivers do this. Just in case the user should probably write a blank interface/device driver to keep any of the OSs drivers from loading.

-Nathan

On Jan 19, 2012, at 11:17 AM, Tim Roberts <ti...@pr...> wrote:

Nathan Hjelm wrote:
> Opps, I misunderstood what you were trying to accomplish.
>
> Is Ep0 or the device claimed by any other driver?

Drivers do not claim endpoints. Only interfaces. Endpoint 0 does not
belong to any interface. On Linux, at least, endpoint 0 is available
even if another driver has claimed some of the interfaces. I don't know
the MacOS rules.

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


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