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Vivado 2020.2 will not recognize ZedBoard over UART, Windows 10

samgills

Hello everyone,

 

First off: I know this is a seemingly menial task, but I have struggled with these issues for days. I have done my due diligence and I am seeking external help.

 

I am using a Lenovo X1 Carbon with Windows 10 and Vivado Webpack 2020.2 to attempt to program a ZedBoard. In the past, I have used this same PC to program Hitech Global A7 PCIE carriers with Vivado 2018 without issue (using the Platform Cable II) and a Zybo Z7 using its USB interface, but for whatever reason I am unable to program anything now.

I have installed the correct driver from Cypress for the USB-UART bridge and I can communicate with the internal processor to toggle the LEDs, POWEROFF, etc. When I attempt to connect using the hardware manager in Vivado however, it does not recognize the ZedBoard.

I have also attempted to use the Platform Cable II, with no luck. The LED won't even light up on the Platform Cable. This is likely due to issues surrounding the USB 3.0 interface on this laptop.

 

If someone can offer some patient assistance, I would be very grateful.

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  • Hello Sam

    When i have this kind of issues I try to

    1. Use an old external USB hub to force  slow connection  (usb hub are typically detected as usb 2.0)

    2. In device manager, select view -> show all devices and uninstall all the com/uart usb adapters

     

    Hope this can help to solve the issues!

    Ambrogio

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  • Hello Sam

    When i have this kind of issues I try to

    1. Use an old external USB hub to force  slow connection  (usb hub are typically detected as usb 2.0)

    2. In device manager, select view -> show all devices and uninstall all the com/uart usb adapters

     

    Hope this can help to solve the issues!

    Ambrogio

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  • in reply to amgalbu

    Hi Ambrogio,

    Unfortunately I don't have an old USB hub kicking around, but I think the issue at hand is that something is funky within the compatibility between USB3.0 and 2.0. In this case, I am using a 4-conductor USB 2.0 cable, so detection as a 3.0 device would be impossible.

     

    Also, during debugging before I posted here I uninstalled drivers and attempted installing the official Cypress driver for the UART chip. It still is not recognized after this.