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RE: USB MSD stack
- From: "Doyle, Patrick" <Patrick_Doyle at dtccom dot com>
- To: "'Andrew Lunn'" <andrew at lunn dot ch>, "Doyle, Patrick" <Patrick_Doyle at dtccom dot com>
- Cc: "'ecos-discuss at ecos dot sourceware dot org'" <ecos-discuss at ecos dot sourceware dot org>
- Date: Thu, 4 May 2006 10:25:10 -0400
- Subject: RE: [ECOS] USB MSD stack
> From: Andrew Lunn [mailto:andrew@lunn.ch]
>
> My USB book is at home....
>
> I thought you had to select an interface to be in use. So having a HID
> interface and a MSD interface is not a problem. However i think you
> can only have one interface selected at once.
>
> But i could be wrong....
>
> Andrew
>
OK, I see what you're getting at... I have a couple of USB books here (and
an overload of information), but I've definitely seen a "select this
interface for use" message somewhere in one of those. So, I would agree to
your assertion that I can have only one interface selected at a time.
Hmmm... I wonder what I should expect a Windows host to do when I plug in a
device that says it has two interfaces, one an HID and one an MSD? I'll
find out soon enough by experimentation, but I suppose it's possible that it
could select interface 1 when it needed to access the disk and interface 2
when it needed to access the mouse... hmmm that doesn't feel right -- does
that mean I can't move my mouse/disk while I'm listing files?
Ahh... the adventure continues :)
I appreciate the dialog -- it helps me to sort through the gush of
information flowing at me right now.
--wpd
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