Error Detect Phy in EmacPs Intr DMA example

[nardhini]

Hi,

I created a Vivado Project with just Zync PS and used the hardware platform to run the EmacPS Intr DMA example in SDK. The code fails at detecting phy address and returns "Error detect phy". I am using Vivado 2017.4 and Zybo Z7-20 development board.

I went through a lot of forum discussions about the same issue and many of the discussions deal with PetaLinux project. Mine is just a baremetal application. I also tried connecting ENET0 reset to pin 50, but it didn't help. Can you please help find where the problem is?

[jpeyron]

Hi @nardhini,

Please attach a screen shot of the Vivado block design.Are you using the Digilent board files?  Here is a Getting Started with Zynq Servers tutorial for the zybo that should work with the Zybo Z7-20. It sets up an echo server but will show the ethernet is working.

thank you,

Jon

[nardhini]

Hi @jpeyron,

PFA the screen shot of the Vivado block design. 

Yes, I am using the Digilent board files. I tried the echo server example and it works, but the EMACPS DMA interrupt example is failing while detecting PHY.

[jpeyron]

Hi @nardhini,

I have not worked with this specific example. Here is a xilinx example for using the AXI DMA in interrupt mode that should be helpful.

thank you,

Jon

[nardhini]

Hi @jpeyron,

The Phy detect error was because the MDIO and MDC pins in the Zync blocd design were connected to EMIO instead of MIO pins. Once I changed the pin connection, phy detection worked fine. But, the example application still didn't run successfully. Now, the code waits infinitely for the receive complete interrupt, which doesn't seem to get called at all.

It would be really helpful if someone who has tried emacps DMA interrupt could answer this.