Lpc2000

You can have one USB port act as 2 complete separate devices. I 
remember seeing a document from microchip that shows how to do so on 
their PICs.

Gus

--- In lpc2000@yahoogroups.com, Bertrik Sikken <bertrik@...> wrote:
>
> 42Bastian Schick wrote:
> > James Dabbs schrieb:
> >> Is it possible (and practical) to use an LPC2148 to be both a 
USB
> >> mass storage device and a USB serial communications device?
> >>
> >> [This is a rackmount box.  We want to use USB instead of the 
more
> >> traditional DB9 console port.  The idea is to allow an 
administrator
> >> with a PC to copy configuration files into the device and also 
to run
> >> hyperterminal shell session.  Any other comments are welcome.]
> > 
> > AFAIK it depends on the number of end-points a device offers. 
For a 
> > mass-storage you need two bulk end-points for CDC IIRC 3 end-
points.
> > 
> > I don't know the 2148, but if it has >= 6 it should work.
> 
> The LPC2148 has 16 logical endpoints.
> 
> Can a USB device be programmed to be two devices at once?
> 
> Alternatively you could configure USB for serial port emulation
> at boot and then use a shell command to switch the USB interface
> to do USB mass storage.
> 
> If it's just configuration files to transfer, perhaps you can
> use xmodem over the serial line emulation, it's quite simple.
> 
> Regards,
> Bertrik
>