g...@novadsp.com wrote:
> ProductID: 0xA00A
> Interfaces: 2
> Number of alternate settings: 1
> Interface Number: 0
> Number of endpoints: 2
> Descriptor Type: 5
> EP Address: 133
> Descriptor Type: 5
> EP Address: 6
> Number of alternate settings: 1
> Interface Number: 1
> Number of endpoints: 0
>
> What I don't get is how to write to the second interface.

If the second interface has no endpoints and no alternate settings,
what's the point?  You can write to the device's control endpoint
without claiming an interface at all.

Remember that interfaces are just ways of collecting endpoints. 
Endpoint requests on the bus do not include an interface number. 
Claiming an interface just grants you ownership of the endpoints within
that interface.

-- 
Tim Roberts, t...@probo.com
Providenza & Boekelheide, Inc.


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