On Wed, 21 Jul 2004, Cedric Tefft wrote:
> Hi all you USB experts out there --
>
> I've got what I though was a fairly simple problem that's turning out to
> be pretty difficult. I'm hoping somebody can point me in the right
> direction. I'm looking for an inexpensive, pre-built
> cable/adapter/device which will allow me to use a Linux PC to simulate
> USB keyboard input to another device. In my case, the "other" device
> happens to be a Scientific Atlanta cable TV box which will accept a USB
> keyboard for channel-change control, however this isn't necessarily
> relevant to the problem. The "other" device could just as easily be
> another workstation -- the specific goal is to make a Linux workstation
> look like a USB keyboard to another device. Anyway...
>
> I'm willing to write my own software, but the hardware component eludes
> me. So far, this is what I've considered/tried.
[...]
> Anybody know if there is such a cheap, pre-built cable or adapter, and
> if so, what they're called and where would I find one? And before I get
> the obvious suggestion, yes, I've spent several hours Googling for such
> a piece of hardware, but so far haven't found what I'm looking for.
>
> Thanks,
>
> - Cedric
There is no such cable or adapter at all, cheap or otherwise. A USB
master simply cannot be made to appear as a slave. Surprisingly enough,
under some circumstances a slave _can_ be made to act as a master; that's
what USB OTG (On The Go) does.
On the other hand, it is possible to buy USB device (slave) hardware that
will work in your PC and is supported by Linux. For example, look at
http://www.netchip.com
I don't know if the price will fall in your range. It's got to be more
expensive than just buying a USB keyboard.
Alan Stern
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