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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.
    • Edited by JM Cotte Thursday, April 26, 2012 11:06 AM
    Thursday, April 26, 2012 11:05 AM

Answers

All replies

  • JM Cotte,

    Are you the device manufacturer?

    Best Wishes - Eric

    Thursday, April 26, 2012 3:12 PM
  • 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.

    Thursday, April 26, 2012 3:27 PM
  • 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

    Thursday, April 26, 2012 4:13 PM
  • 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

    Thursday, April 26, 2012 6:50 PM
  • JM Cotte,

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

    Best Wishes - Eric

    Thursday, April 26, 2012 6:57 PM
  • 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

    Thursday, April 26, 2012 7:20 PM
  • 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

    Wednesday, June 06, 2012 5:46 AM
  • 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!!
    Thursday, June 21, 2012 8:25 AM