Sure, have to bit-banging the port in 1.5mHz or 12mHz in pretty precise,
then have to have enough time to do something about the USB stack. Maybe
with an SX? :-)

It took me around 2 weeks to implement a fw on the 4550 using it's SIE (in
assembly so not using the Microchip USB stack) -- I have no idea how long
would it take to implement the whole lot with bit banging, but maybe I was
just too slow so it's possible to make it faster?

Tamas


On Wed, Jun 11, 2008 at 1:13 PM, Jan-Erik Soderholm <
jan-erik.soderholm@telia.com> wrote:

> Jinx wrote:
> >> Or PIC24F with OTG.
> >> Maybe a more "PIC-like" architecture... :-)
> >
> > Forgive my ignorance, and TBH the amount of material available
> > for the USB newbie is bewildering, but is it not possible to bit-
> > bang USB ? That's not to say I would do that if another option is
> > available, such as alternate memory, but it seems most protocols
> > have both hardware and software (ie bit-banging) solutions. Is
> > that not the case for USB ?
>
> As I understand, USB is a lot more complicated then,
> say, I2C, SPI or USART communication.
>
> Jan-Erik.
>
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-- 
Rudonix DoubleSaver
http://www.rudonix.com
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