I am currently using a USB pic to create a USB to serial bridge. Microchip
has firmware available that does this look for CDC firmware on microchip's
site.

The Problems I am running into is that the Microchip Firmware is implemented
as a cooperative task and needs to be called pretty regularly (looks like
ever 1 ms) to ensure that the USB interrupts get serviced correctly
otherwise the results are flaky.

If your application can live with this limitation you are pretty much all
set.

Mike


On 12/7/06, Dave King <KingDWS@shaw.ca> wrote:
>
> Just curious if anyone has used one of the pics with usb to create
> a usb to serial bridge?
>
> I know the usb-232 are fairly cheap but I really need a much more
> compact design.  I googled and found lots of these but all seemed
> to use a FT usb converter chip. I was looking at the 18F's with
> USB 2 and pondering if it could be done with just a pic.
>
> so has anyone done it seen it? Has schematics to share? ;-]
>
> Dave.
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