I am contributing it to the project.  Once I incorporate Peter Stuge's suggestion, hopefully within the next few weeks I will submit another commit.

Best Regards

On Mon, Jan 27, 2014 at 1:05 AM, Dean Chester <dean.g.chester@gmail.com> wrote:

Thanks Min it works a treat it also fixes the issues running in a virtualised environment which I do for Ubuntu. 

Is your new firmware under the same licence as the original?

Kind Regards, 

Dean Chester

On 24 January 2014 21:55, Peter Stuge <peter@stuge.se> wrote:

Min Xu wrote:
> I would be happy to send them the USB protocol changes.  However,
> it will be INCOMPATIBLE with earlier firmware based SIMTrace boards.

There is a standardised way to deal with protocol changes in USB;
change either the bDeviceProtocol field in the device descriptor or
the bInterfaceProtocol field in the interface descriptor, and make
host software do the appropriate thing based on the descriptors of
the connected device.

Of course only new host software will work with the new protocol, but
this way new host software still continues to work with the old protocol.


//Peter