Lpc2000

> A while ago a virtual com port driver was uploaded. I have been
> wondering about this: is it possible to create a virtual com port
> driver on USB MCU that does not require any driver installation
> on windows? I would like the virtual com port to behave like mass
> storage and keyboard/mouse devices, when they are plugged in they
> are immediately available. Why do these work without host drivers
> while all virtual com ports I see require special drivers?

Yes.  USB CDC 1.1 ACM Serial Emulation.

I implemented this as one of my design requirements is to support Win32, Mac
OS X, and Linux.  USB CDC ACM will work without a "driver" for all three.
Plugging into a Win32 machine requires a .inf file, no driver, Apple does
not, it simply works.  On Windows the driver will maintain the same port
assignment when moving between USB ports.  The Mac OS X is the most
conforming to the actual spec.  I posted the CDC implementation requirements
on the Apple USB list.  I will be testing on Linux sometime this week.
 
All of the examples I've found of USB CDC ACM on the internet are
non-conformant with the spec, and will not work directly on the Mac, and
possibly Linux.

 
Joel