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Visitor i.tarwala
Visitor
4,041 Views
Registered: ‎08-13-2013

BRAM to DDR Transfer using CDMA

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hi everyone ,

 

I am trying to establish a communication between DDR and BRAM using CDMA. I am able to transmit data from DDR(location 0x00080000) to BRAM(0x40000000) and succesfully able to read the BRAM data from PL logic.

After processing I am writting the updated data to the BRAM , following which I initiate BRAM(0x40000000) to DDR(0x00800000) transfer using CDMA. But when i read teh DDR location It has the old values not the updated values. 

 

I tried writting to a another DDR location , The CDMA writes the old values. I have monitored chipscope , I seem to write the correct values to BRAM.

 

Also If I am not using the CDMA , I am able to read and write correct values to the BRAM from DDR usig the GPIO interface, so I am sure the PL is writting the values to BRAM.

 

I am attaching the mhs file for reference, if anyone has faced similar problems kindly help.

 

 

regards,.

Idris

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Visitor i.tarwala
Visitor
5,501 Views
Registered: ‎08-13-2013

Re: BRAM to DDR Transfer using CDMA

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problem solved

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2 Replies
Visitor i.tarwala
Visitor
5,502 Views
Registered: ‎08-13-2013

Re: BRAM to DDR Transfer using CDMA

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problem solved

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Adventurer
Adventurer
3,267 Views
Registered: ‎06-25-2014

Re: BRAM to DDR Transfer using CDMA

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How did you solve it?

Can you post a complete project?

Thanks very much.
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