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TM4C129ENCPDT: TivaWare v2.1.4 USB driver not connecting to Windows 10 system

Part Number: TM4C129ENCPDT

Hi all,

I have recently updated our firmware to TivaWare v2.1.4. After programming boards with the new firmware, I can connect to the boards on Windows 7 using the old Tiva driver, but I can't connect to the boards on Windows 10 using the new Tiva driver that is found in TivaWare v2.1.4. Note, I had to turn-off driver signing as Windows would not allow it to be installed as it considers the usb_dev_serial driver to be unsigned...

Any suggestions would be helpful.

Thanks,

-Wes

  • Hi Bob,

    Unfortunately, no. I've tried cleaning out the registry as the post suggested and tried reinstalling but to no avail. I even tried the Stellaris drivers for Win 10 that were linked. I'm still seeing signing errors.

    Currently, I'm using the usb_dev_serial.inf given in TivaWare 2.1.4. This works on Windows 7, but not on Windows 10. First it shows a signing error which requires me to turn off driver signing to get it installed. After it is installed, though, I can't connect to my device which I can connect to on the Windows 7 machine that has the same driver installed.

    Regards,

    -Wes

  • Hi Bob,

    Some extra information:
    I am using usb_dev_serial drivers (PID = 2), not usb_dev_cserial (composite) drivers (PID = 7).
    I am using a variation of the "C:\ti\TivaWare_C_Series-2.1.4.178\examples\boards\dk-tm4c129x\usb_dev_serial" example project.
    Again, this works fine with the old drivers and new drivers on my Windows 7 machine.

    Note, we are using the USB to communicate Modbus messages (COM Port). There are other RS485 ports on our system that connect fine and show that the system is still running as expected when connected to the Windows 10 (or 7) machine. Also, I can hot swap the USB between my Windows 7 machine and Windows 10 machine, but only the Windows 7 machine connects.

    Regards,
    -Wes

  • I am sorry, but we have been unable to recreate your issue. We even created a PC with a fresh Windows 10 install, but were unable to recreate the problem.

  • Thanks for your effort Bob. I'm attempting to modify the DK-TM4C129X example for a standalone USB test on our TM4C129ENCPDT board. Hopefully that will show us something. The variation that I was looking at before was a project that we updated from an older TivaWare version that was originally for a Stellaris chip. I'll try from this direction to see if there is something that we're missing.

    Regards,
    Wes
  • Hi Bob,

    Just for reference, this was a developer error. After going at the problem from both directions, it was found that an earlier developer turned off a few functions in our project that apparently aren't needed in talking with Windows 7 and below but they appear to be necessary with Windows 10. Unfortunately, I had overlooked them during the conversion.

    Thanks again,

    -Wes