UART dosen't work on zedboard

[Ammaralex_ab]

I'm trying to use a VDMA tutorial. I have a ZED Board and I'm using VIVADO 2019.1

Every time I run the SDK, it shows nothing on the terminal. After that I tried to boot from the SD card and it also shows nothing.

PS: I checked that I'm using the right terminal

[thinkthinkthink]

Have you tried using another terminal application ? TeraTerm is a good choice as I've personally never used the terminal inside SDK/Vitis and probably never will.

[Ammaralex_ab]

@thinkthinkthink I have used TeraTerm also still the same problem

[DerekM]

Are you saying that the terminal output doesn't work for this particular project (VDMA), or that it doesn't work for any project? Because there are different debug approaches depending on the problem. If you have the latter problem, then you must build a completely different project with just the Zynq processor and test it with a simple "Hello World program. The current project is too complicated to test a simple printf issue.

[Ammaralex_ab]

@DerekM I built a very simple project  just the zynq processor with the "Hello world program and still can't see any thing on the terminal. Then I used just the pre-build zed platform provided in SDK with the "Hello world program and still the same problem.

[DerekM]

For the ZedBoard, you need to ensure that you have the Cypress USB drivers installed. I think this is the one: https://www.cypress.com/documentation/software-and-drivers/microsoft-certified-usb-uart-driver

You also need to use two micro-b USB cables with your board; I think it is J14 for UART and J17 for JTAG.

When you install the driver and connect the UART cable, you should be able to see the COM port in the PC device driver settings (in Windows). Use the COM port in your terminal app. That should get you going.

If you still have issues, check that the UART used by the Zynq (in Vivado Zynq-7000 block diagram) and the stdout setting in the BSP (in SDK) match up.

[Ammaralex_ab]

@DerekM I have already installe d the driver from cypress and you can see in the photo that the UART configuration are correct!! the problem still there?

[DerekM]

I've had issues with the Cypress driver before. First, I would check if you can see the ZedBoard COM port appearing in Device Manager in Windows. And even if you can, uninstall and reinstall the driver. That worked for me before.

After that, I'm out of ideas, unfortunately...