I have got the USB communications device class (CDC) driver working in my application without any problems at all when I use the Atmel vendor ID and product ID, but when I change these to my company's vendor ID and our desired product ID, I can't get the atmel_devices_cdc.inf file to be recognised by Windows to allow the driver to be installed.

I have tried modifying that .inf file approximately in accordance with Atmel AVR4907 which I note is for an earlier version of Atmel Software Framework.

I am trying to get this working with the SAM3S-EK board which uses the SAM3S4C chip.

I am trying to get the single device working, not the composite device. It declares itself to be an EVK1XXX Virtual Com Port when I use Atmel's IDs.

What changes do I have to make to atmel_devices_cdc.inf to use our own vendor ID and product ID, please?

Many thanks.