Unable to connect Nexys A7 to my PC

[Artoria 0]

Hi,

I have a Nexys A7 FPGA board, but when I tried to connect it to my PC trough micro USB cable, the PC could not recognize the device. In the device manager, it showed error code 43 (Windows has stopped this device because it has reported problems). However, the board could be lighted after connected. In the Vivado, it showed there was no hardware conneted. 

I tried general USB troubleshooting methods, such as restarting computer, or turning off PSU, but they did not work.

Can someone help me to fix it? Thank you!

 

[BogdanVanca 45]

Hello @Artoria,

Please try to install Xilinx USB/Digilent cable drivers. Follow these instructions:

https://www.xilinx.com/support/answers/59128.html

Best Regards,

Bogdan Vanca 

[Artoria 0]

Hi @BogdanVanca

Thank you for your replying.

I tried reinstaling the drivers, but seems it does not work.

I am trying to reinstall Vivado webpack, but I am not sure if it works.

Is there any other solution I can try?

 

[jpeyron 660]

Hi @Artoria,

After you have re-installed Vivado. Make sure to re-start you PC.

In the device manager expand universal serial bus controllers.

Do you have a USB serial converter a and USB serial converter b at the bottom of the expanded list? 

When you click on either are they FTDI drivers? If so uninstall both drivers and re-plug in the Nexys A7. To have windows re-download the FTDI drivers.

Please install Adept 2. 

Does Adept 2 recognize the Nexys A7?

best regards,

Jon

 

[Artoria 0]

Hi @jpeyron,

Thank you!

your solution is very helpful.

After installing Adept 2, it now works.

Windows can recognize my device, and I can run my program on the board.

Thank you again!

[jpeyron 660]

Hi @Artoria,

Glad to hear that installing the Adept 2 fixed your issue. Thank you for sharing what you did.

Best regards,

Jon

Also welcome to the Digilent Forums!

[TLJ 0]

On 4/8/2019 at 9:26 PM, jpeyron said:

Hi @Artoria,

After you have re-installed Vivado. Make sure to re-start you PC.

In the device manager expand universal serial bus controllers.

Do you have a USB serial converter a and USB serial converter b at the bottom of the expanded list? 

When you click on either are they FTDI drivers? If so uninstall both drivers and re-plug in the Nexys A7. To have windows re-download the FTDI drivers.

Please install Adept 2. 

Does Adept 2 recognize the Nexys A7?

best regards,

Jon

 

Hi @jpeyron

I followed up your instructions and I uninstalled the FTDI drivers but when I re-plug in the Nexys A7, windows does not re-download the FTDI drivers.

USB serial converter A and B and some other USB controllers are not more listed under "universal serial bus controllers.

Any idea what to do?

Best regards,

Jonathan

[JColvin 449]

Hi @TLJ,

To clarify since you did not explicitly mention it, did you install the Adept software? My understanding is that it has the necessary drivers as part of the installation.

Thanks,
JColvin