In my opinion, the easiest method of converting your application to USB
would be to use a USB-UART converter.  FTDI and Silicon Labs both make chips
that will do this.  You will need to install a driver, but it's by far the
simplest method for doing what you wish to do.

The other option is to get a stronger PIC and implement USB on it.  But I'm
sure many people here will testify that it will take longer to do that (and
adjust your client side application) than it will to add a USB-UART chip to
your h/w design.

The other considerations you need to take in to account are the data rates
you will need and whether or not one of the standard USB interfaces will
work for you.

On 11/20/06, John Waters <john_fm_waters@hotmail.com> wrote:
>
> Hi All,
>
> I have a device that talks to the PC via RS232, but I want to upgrade it,
> so
> that it can talk to the USB port other than the serial port. What is the
> easiest way to implement USB to my device? I saw some devices, e.g. the
> memory stick, that will talk to the PC rightaway when it was inserted into
> the USB socket.There is no need to install any software or driver
> beforehand. Is this easy to implement? Are all USB enabled devices capable
> of doing this?
>
> Thanks in advance!
>
> John
>
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-- 

Shawn Wilton (b9 Systems)
http://b9Systems.com  <- New web page
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