The good alternative was to use the AXI Data Mover. – The transfer commands are delivered by AXI4 Stream. – The status of transfers are delivered back by. The AXI Datamover is a key Interconnect Infrastructure IP which enables high throughput transfer of data between AXI4 memory mapped domain to AXI4- Stream. For you, you are probably looking at AXI Datamover or AXI Central DMA. ” Xilinx provides the AXI Virtual FIFO Controller core to use external.
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Will let you know when I do. Please upgrade to a Xilinx. For the ddatamover time I have to settle with simulation to determine what is going on. We share info about use of our site with social media, ads and analytics partners.
Embedded Processor System Design: Revision History The following table shows the revision history for this document. However, trying to read the data from the 0x location I dont see the data I expect.
Any feedback regarding my three questions is apreciated. Its been almost two weeks since I have been trying to get this to work. The is still a problem though. I was just curious about your experience.
However, when a second write command is issued, the tready signal of the s2mm bus is deasserted, dattamover never datamovver again. But thanks to your sugestion, I tried once more with no result. I would really appreciate more insights getting the datamover to work has been really frustrating.
I setup the datamover in S2MM basic mode mhs attached as well. Also, based on that, I have included a wait state that issues a command ahead of time after the data becomes available.
AXI DataMover Issue – Community Forums
For the datamover I have an independent state machine for the cmd AXIS master that keeps on switching between idle and write states. Slave interfaces may not define Metadata until Validation has been run As I am connecting a normal fifo zxi this input, which is not master axi, then I created an AXI fifo, with the correct width, validate, erase and finally with the correct width connect my normal fifo in the place I had it before.
I use the regular fifos as I need to cross clock domains and change the data width accordingly to mantain my throughput. I suspected that there might be something wrong with the command word I am sending but the logic analyzer data tells me otherwise from what I could tell. I went to seek external help since nobody on this forum had any datamoveg suggestions.
Thanks a lot for your timely and useful assistance. However, I have that wait state going up to 70 clock cycles before data is sent and still same behaviour. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. I am wondernig if something in the AXI bus in not sequencing correctly. Have you found a solution in the meantime?
Then the validation would move its width down to the datamover. The command word settings are as follows:.
I have a state machine running for the data that would send axii bit data word every time a new value becomes available. Additional Resources The following information is listed for each version of the core: From what it seems, the datamover is not accepting anymore data over the AXIS bus after a few clock cycles.
The VHDL code now does the following:.
Xilinx AXI Datamover | IP Catalog
It’s the mechanism to propagate various parameters like data width. We have detected your current browser version is not the latest one. The cmd state machine keeps on sending the same command word with every databeat. Still working on it though.
I did tried the Validation, and even it could datamoer, just with the warning about the different width. ChromeFirefoxInternet Explorer 11Safari. Keep in mind that L1 and L2 cache is probably enabled when the cpu reads or writes 0x so you may only be interacting with cache. In addition, although I did try different addresses I am starting to wonder if the addresses I am choosing are being overwritten by something else although I highly doubt.
All forum topics Previous Topic Next Topic. Same problem I indicated here persisted with no obvious solution, so he provided a complete different approach based on code he had written in the past that is non-DMA dependent.