• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 100 subscribers
  • Views 464 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

EDMA3 register values

Sergey Kolchanov
Prodigy 250 points
Other Parts Discussed in Thread: OMAPL138

Hi all

I have found that Code Composer Studio view "Registers" shows 0 for all EDMA3 registers. I have tried to check Memory Browser and on range 0x01C00000u - 0x01C00200u there are all zeros too. McASP and I2C register values seems well in both memory browser and register views. Does it mean I am writing EDMA registers wrong way or it is a bug in CCS? 

CCS version 5.5.0.00077
DSP 6747.

Thanks and regards.

  • 0
    TI__Mastermind 43955 points

    Hi Sergey,


    I have a OMAPL138 LCDK board which has the C6748 DSP core ( and not exactly the C6747 ) in it.


    Tried to run the following EDMA3 example and observed that the register values get changed on CCSv5.5 register window.

    C:\ti\OMAPL138_StarterWare_1_10_04_01\build\armv5\cgt_ccs\omapl138\lcdkOMAPL138\edma

    Which example are you using ?

  • 0 in reply to Shankari G
    Prodigy 250 points
    Hi Shankari G!

    Unfortunately its not easy to describe which example I am using. Let me explain.

    According to 6747 datasheet, my EDMA3 registers is mapped to 0x01C0 0000. Thats why I have tried such things:

    volatile CSL_Edma3ccRegs* edma_regs = (CSL_Edma3ccRegs*) (0x01c00000);
    volatile Uint32 cfg = edma_regs->CCCFG;
    System_printf("CCCFG value : %lx\n", cfg);

    The result is like that:

    CCCFG value : c0004ad0

    But looking at the Table 16-22, 6747 TechRefManual - it doesn't seems possible value for EDMA3 CCCFG. Furthermore, memory browser and registers view still shows zeroes.

    I wonder if you give me some ideas what to try next.

    Thank you.
  • 0 in reply to Sergey Kolchanov
    Prodigy 250 points

    Hi all!

    I just forgot to enable EDMA3 via PSC :) Now it works well; so, I am revoking the question.