Lpc2000

Marko Pavlin wrote:
> I would like to use CDC USB class to replace RS232 interface for a 
> product implemented with LPC2148.

I'm also working on a USB CDC class driver for the LPC214x.

> 
> I have some (mostly "windows") questions:
> 
> 1. Does microsoft provide standard INF file for the CDC driver?

Not as far as I know.

> 2. If not, is it possible to define inside INF file the port number 
> (e.g. COM9, COM27 etc..)?

In my experience, windows just assigns the next available com port.

When resetting the USB CDC device while it is open (e.g. in HyperTerm)
the 'next available com port' is increased. For example, when virtual
COM3 is opened in hyperterm and the device is plugged/unplugged,
COM3 gets 'zombified' and the device is now assigned COM4.

There was some recent discussion about making a USB CDC COM port
persistent on the usb.org discussion forums.

> 3. Where is "normally" usbser.sys after WINxxx installation?

I had to manually extract it from one of the .cab files in
<windows root>\Driver Cache\i386
(driver.cab or sp2.cab)

Regards,
Bertrik