USB CDC class device

Question

Hi,

I've read a lot of thread but I need some calrifications:

-I can't engage a dialog with a CDC device using the usbser.sys in metro app as I do not have access to a serial API.

-Are there other ways to communicate with such a device?

All I have for this device is an inf file with vendore/device ID and a reference to usbser.sys.

I am also interested in workarounds for my personal use.

thanks.

Answer 1

JM Cotte,

Are you the device manufacturer?

Best Wishes - Eric

Answer 2

Eric,

No, I am not the device manufacturer.
What I know is that the device uses this mode of communication in order to maintain backward compatibility with old software.

Thanks
JM cotte.

Answer 3

JM Cotte,

What is the device?  WinRT does not support serial and usbser.sys is not accessible from a Metro specialized device app. 

Best Wishes - Eric

Answer 4

This is a measurement device for the industry.
If I get you right, there is no workaround as long as it make reference to usbser.sys and needs serial support.
More generally, Metro apps are a no no for CDC devices ?

Thanks,
JM Cotte

Answer 5

JM Cotte,

Post back here in a couple of weeks.  Perhaps there will be an update.

Best Wishes - Eric

Answer 6

Eric,

Thanks for your time, I'll get back to this forum for updates.
But as you don't answer no, this gives me hope.

Best regards,
Jean-Marie Cotte

Answer 7

JM Cotte,

I have looked into this further.  WinRT does not support serial and usbser.sys is not accessible from a Metro specialized device app. 

Best Wishes - Eric

Answer 8

For others out there - CDC is a common method used for easy/cheap serial port access for devices using a virtual serial port windows interface. 

I'm no driver expert, but I know without its support small companies like mine wont be able to develop USB based devices for windows 8.

Please sort yourself out Microsoft - I wont be buying that new Surface tablet now!!