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ADS1018EVM: ADS1018EVM USB connection error

Liu Hang
Prodigy 10 points
Part Number: ADS1018EVM
Other Parts Discussed in Thread: ADS1018

ADS1018EVM USB connection error

I have tried to download SBAC253A-PAMB Windows USB Drivers (Rev. A), but the installation driver still has ERROR: Connection to BULK device timed out. And after showing that the connection is successful, the connection timeout error is reported again.The LED display of the development board is normal, please help me

  • 0
    TI__Guru** 113765 points

    Hi Liu,

    Welcome to the E2E forum!  The ADS1018EVM should not require a driver installation.  When you plug in the EVM to the USB, the driver is automatically installed using the native MS WINUSB driver.

    The ADS1018EVM actually uses 2 communication ports.  One port is a CDC virtual COM port where the communication of commands/responses takes place.  The second is a BULK port where data is sent to the GUI.  Where we have seen this type of error is when connecting USB through a hub instead of directly connecting to the PC.  I would suggest trying another USB port not connected to a hub to see if the communication will take place.  Also make sure that only one EVM is connected.  If multiple EVMs are connected the BULK port cannot be opened properly.

    If you are still seeing issues, can you send me a screen shot of the Device Manager showing the COM ports and Bulk port connections.

    Best regards,

    Bob B

  • 0 in reply to Bob Benjamin
    Prodigy 10 points

    Thank you very much for replying to my question. I checked the device manager. As you said, the COM interface is connected normally, but the BULK interface is not driven. When I reconnect, the connection is still successful, and it is timed out after 2s. ；

  • +1 in reply to Liu Hang
    TI__Guru** 113765 points

    Hi Liu,

    Not to get too complicated with the explanation of the USB enumeration, but when you plug the EVM into the USB the connection becomes a composite connection where both the CDC and Bulk enumerate.  From the screen shots you are showing, the CDC port has properly enumerated and the green indicator lights for the ADS1018.

    I had requested screen shots of the Device Manager, but I will at this point assume that the Bulk device is showing as Unknown Device.  If this is the case you will need to manually make the association for the bulk device to the correct driver as the device registry did not update correctly for the port you are using.

    In your original post you stated that you downloaded and installed the driver zip file.  Specific instructions on how to associate the bulk driver is given in the following post:

    https://e2e.ti.com/support/data-converters/f/data-converters-forum/914940/faq-how-do-i-resolve-pamb-evm-connectivity-and-or-driver-installation-issues/3380582#3380582

    You will only need to associate the bulk driver usb_dev_bulk_comp.inf to the unknown bulk device.

    Best regards,

    Bob B