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Adventurer
Adventurer
6,806 Views
Registered: ‎11-02-2015

Zynq: How to enable the AXI Burst Transaction from ARM CPU to FPGA?

Hi everyone,

 

Recently, I am trying to learn the AXI Burst Mode or AXI Full Mode, which allows continuous data transaction between the PS and the PL on Zynq board. The general picture is as follows:

 

0.png

 

The objective is to move an array of data from the PS to the Slave IP through AXI bus in burst mode.

 

Although I alreadly know how to enable the AXI burst mode on the FPGA side (package my slave IP up with AXI Full/Burst interface verilog wrapper) through this video tutorial, I still get no idea about how to enable the AXI Full/Burst mode on the master side or the PS side. I really need to enable the AXI burst mode on the PS side, because somebody in this forum told me that the AXI burst transaction can be acheived only when both the PL and the PS have support for and enabled the AXI burst mode. Here is what he said:

 

there is not much a peripheral/slave can do to have burst transactions generated onto it. After you code a slave which supports burst, you have to convince the master you are using to generate the burst transactions and DMA (in any disguise) is the only way to accomplish. I have seen indications that a memcpy can force the PS to generate it but I don't have any solid evidence for it. Another option is to try multi-register load/store operations in ARM."

 

So how to enable the AXI burst support in the PS/Master side so that I can have high-speed data transaction from the PS to the PL? Is there a detailed example or tutorial that I can follow?

 

Really appreciated,

 

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2 Replies
Teacher muzaffer
Teacher
6,593 Views
Registered: ‎03-31-2012

Re: Zynq: How to enable the AXI Burst Transaction from ARM CPU to FPGA?

did you try the memcpy as the "other poster" suggested ?
Another option is to use the PS dma controller to do it for you.
- Please mark the Answer as "Accept as solution" if information provided is helpful.
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Visitor alin_
Visitor
209 Views
Registered: ‎12-28-2018

Re: Zynq: How to enable the AXI Burst Transaction from ARM CPU to FPGA?

你好,在zynq中实现AXI_FULL,axi_full作为从机,我相信你已经解决了吧,可不可分享一下?我也在这方面卡住了,谢谢了!

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