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Visitor hr92
Visitor
6,362 Views
Registered: ‎04-04-2016

Implemeting VDMA with custom ip

I'm trying to make a design that takes an image from ddr to my custom ip through VDMA and the puts the results back in the ddr. I have used the same standalone application (only the sdk code not the hardware platform) as in :

http://www.openhw.org/module/forum/thread-597560-1-1.html

 

however I am not getting results on the specified address. When I'm debugging the app sometimes I get values like FFFFFFFFF and FFFFFFFF00 at the adress I specified for the result in ddr and I dont know what am I doing wrong. Should I use two VDMAs one from retrieving image from ddr and another for writing ? Is it a synchronisation problem?

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Xilinx Employee
Xilinx Employee
6,327 Views
Registered: ‎08-02-2011

Re: Implemeting VDMA with custom ip

Hello,

First, have you disabled caching while debugging? If not, you definitely should.
www.xilinx.com
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Visitor hr92
Visitor
6,318 Views
Registered: ‎04-04-2016

Re: Implemeting VDMA with custom ip

Hi,

 

yes, I did Xil_DCacheDisable();

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