AVR-Chat

If you only want to talk to USB-memory sticks, the host implementation part 
is
pretty simple. A lot of the regular chit-chat that set up the USB link can 
be
skipped.
I've tried this with a EZ811 chip from Cypress, which is supersimple to 
interface
to the AVR. (sorry, no code is available at the moment).
They have a Powerpoint presentation somewhere on their site, showing how to
shave off the unneeded stuff.

The reduction in complexity should work with other device classes too.

/Jesper

----- Original Message ----- 
From: "Joel Kolstad" <jkolstad71@yahoo.com>
To: <AVR-Chat@yahoogroups.com>
Sent: Wednesday, July 20, 2005 8:51 PM
Subject: [AVR-Chat] Re: readin USB thumb drive and USB keyboards


> --- In AVR-Chat@yahoogroups.com, "Larry Barello" <yahoo@b...> wrote:
>> Atmel has an app note detailing how this works.
>> http://www.atmel.com/dyn/resources/prod_documents/doc2556.pdf
>
> That's not the same thing at all.  The Atmel app note discusses
> turning your AVR into a USB _peripheral_, whereas the GHI chip acts as
> a USB _master_ -- a considerably more complex undertaking (although
> just getting the AVR working as a USB peripheral is a pretty
> sophisticated undertaking too).
>
> I'd like the GHI part a lot better if the pricing were more like $10-
> $15 per chip (less than the current $35-$40) and the binary image
> license was, say, $10k (more than the current $5K) instead.
>
> ---Joel Kolstad
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