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Farmer Jo
Visitor II
October 13, 2017
Solved

STLINK USB drivers not installing

  • October 13, 2017
  • 4 replies
  • 6668 views
Posted on October 13, 2017 at 22:19

Hi,

I have recently purchased a number of NUCLEO-L476 boards but cannot get the USB drivers to install correctly whch are required for both ther STLINK utility and also for System Workbench for STM32.

I am using a Windows 10 64-bit laptop with USB 3 ports and have installed the STLINK utility, en_stsw-link004.zip, which includes the relevent USB drivers. The installation appears to succeed, however, when I plug in the development board via USB Windows complains with 'USB device not recognised'. In Device Manager, under the Universal Serial Bus controllers section I have an entry which shows as 'Unknown USB Device (Device Descriptor Request Failed), which is presumably the STLINK/V2 probe in the development board. Also I have no virtaul COM port entry.

I have tried the same on a Windows XP and Windows 7 PC and all report similar errors. Its as if the development board is not compatible with the driver or the driver has a problem.

I have searched the internet and this forum and I am completely out of ideas to try next.

According to the Getting Started card in the box an LED should flash, and when a button is pressed it changes. I am getting no flashing LED at all. Also the power LD3 is not on either. LD1 on the probe does, however, flash 3 or 4 times when it is plugged into the USB port. I am certain that the links specified on the card are configured correctly.

Any help would be appreciated.

Regards

FarmerJo

#stm32l476 #stm32 #stm32-usb-driver
    This topic has been closed for replies.
    Best answer by Farmer Jo
    Posted on October 21, 2017 at 10:55

    Hi Imen D,

    Having tried many things including your suggestion it turned out to be a faulty USB cable. The cable was new about six months ago and one of many I had knocking about. Trust me to use the only one that was broken.

    Thanks for yout reply.

    Regards

    FarmerJo

    4 replies

    I
    Imen.D
    Technical Moderator
    October 20, 2017
    Posted on October 20, 2017 at 18:15

    Hello,

    Try to upgrade firmware version using STM32 ST-LINK Utility: go to ST-LINK > firmware update, or through this Link

    http://www.st.com/en/development-tools/stsw-link009.html

    Best Regards

    Imen

      L
      LPadi.8
      Visitor II
      January 18, 2019

      Hello Imen,

      Just for you to know, it's impossible to upgrade the firmware when the PC don't even recognize the USB device.

      Regards,

      Luis Padierna

      F
      Farmer JoAuthorAnswer
      Visitor II
      October 21, 2017
      Posted on October 21, 2017 at 10:55

      Hi Imen D,

      Having tried many things including your suggestion it turned out to be a faulty USB cable. The cable was new about six months ago and one of many I had knocking about. Trust me to use the only one that was broken.

      Thanks for yout reply.

      Regards

      FarmerJo

      L
      LPadi.8
      Visitor II
      January 18, 2019

      I had exactly same problem but with an ST-LINK V2 standalone. I realized the problem was using the ST's official USB cable, the solution is to use a USB cabe that actually works. For me as soon as I changed the cable, the problem was solved.

      P
      Paradox
      Visitor II
      August 8, 2020

      Hello, I am experiencing the same issue with the STM32MP157C-EV1 ST-Link v2.1 on both Windows 10 64-bit and Ubuntu 18.04. I tried multiple USB cables and none of them works, there is the same entry in device manager on Windows stating it can not obtain device descriptor (code 43). I used the same cable(s) for the DK2 and it had no issue connecting, ST-Link was recognized right away. I believe all drivers are installed properly as DK2 is recognized. Is the board faulty or there is a way to fix this?

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