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TI Home » TI E2E Community » Support Forums » Digital Signal Processors (DSP) » C6000 Multicore DSP » Keystone Multicore Forum (C66, 66A, AM5) » All Tags » qdma
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C6000 Multicore DSP

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qdma
  • 6678
  • edma
  • IPC
  • L2
Related Posts
  • Forum Post: Corruption in interdependent QDMA linked transfers

    Itay Chamiel Itay Chamiel
    Hi, We are working with an EVMC6678. When performing several linked transfers, with the output of one transfer set to be the input of the next, we see incorrect behavior. We start with a simple 100x100 image consisting of a flat gray background and a single 21x21 white square, as seen in file img0...
    on Apr 29, 2012
  • Forum Post: QDMA Function Does Not Work

    Charles Leech Charles Leech
    Hello, Can anyone tell me why my QDMA function runs but when I print out srcBuff1 and dstBuff1, dstBuff1 is not filled with srcBuff1? /* Global Variables */ Uint8 srcBuff1[512]; Uint8 dstBuff1[512]; /* EDMA Setup */ #define PCIE_DMA_NOT_INITIALIZED -1 #define PCIE_DMA_TRANSFER_FAIL -1 #define...
    on Jul 20, 2012
  • Forum Post: QDMA transfer from SDRAM to L2

    Andrey Savinkov Andrey Savinkov
    Hi all, I tried to tramsfer data from SDRAM to L2 using QDMA, but it doesn't work in my application. Data transfer "from SDRAM to MSMCRAM" and "from SDRAM to SDRAM" works, but SDRAM -> L2 doesn't work. I found thread about the subject, where the same problem was discussed...
    on Apr 3, 2013
  • Forum Post: RE: QDMA transfer from SDRAM to L2

    Andrey Savinkov Andrey Savinkov
    Thanks Chad ! It works! Also I'd like to ask how to use QDMA transfer from SDRAM to L2 in multicore application. But this is another question, and I will create new thread.
    on Apr 4, 2013
  • Forum Post: RE: QDMA in multicore application

    Andrey Savinkov Andrey Savinkov
    I made a mistake when writing my first message. In my application #pragma is defined as: #pragma DATA_SECTION(x_dst, "l2sram1_data"); So, all is right with 's'. Destination address is address for x_dst array. That is 0x11800000. The application is starting on two cores: Core0...
    on Apr 8, 2013
  • Forum Post: RE: QDMA in multicore application

    Andrey Savinkov Andrey Savinkov
    Hello Chad, I cannot halt the code prior to the QDMATransfer() because my code in not running if I set " #pragma DATA_SECTION(x_dst, "l2sram1_data) ". If I place x_dst array in SDRAM or MSMCRAM then the code works. I suggest that the problem is following: Both cores Core0 and Core1 are...
    on Apr 11, 2013
  • Forum Post: QDMA in multicore application

    Andrey Savinkov Andrey Savinkov
    Hi all, In my simple application Core0 generates data in SRAM and sends MessageQ (including a pointer to the data) to Core1. Core1 must transfer data from SDRAM to own L2 for calculations. I can use memcpy(), but this is rather slow. I'd like to use QDMA. My application works if Core1 fransfers...
    on Apr 8, 2013
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