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J784S4XEVM: DMA example

Wissam Makhlouf
Prodigy 50 points

Part Number: J784S4XEVM

Tool/software:

Hello, 

For my project I need to use DMA with C7X core. As I began to use this EVM recently, I need an example to test the DMA connection between C7X and the DDR memory. Is it possible to provide an example that is using DMA ?

Thank you,

Kind regards,

Wissam Makhlouf

  • 0
    TI__Genius 10170 points

    Hi Wissam,

    There are DMA and DRU examples within the RTOS SDK's PDK package - you can see what examples are available in the release package, and they are described on this page here. Note that there are some of these that are enabled on C7x processor - you can find that list here

    Best,

    Asha

  • 0 in reply to Asha Bhandarkar
    Prodigy 50 points

    Hi Asha,

    Thank you for your reply. I'm currently using the example udma_memcpy_testapp. I'm trying to send the data from C7X_1 to write into the DDR memory.

    The problem is that I'm not finding the DDR memory address range, it would be great if you have a document having this information. .

    Thank you,

    Kind regards,

    Wissam

  • +1 in reply to Wissam Makhlouf
    TI__Genius 10170 points

    Hi Wissam,

    DDR memory regions are contained in the TRM - see the section 8.2.3.3 DDRSS Memory Regions

    If you are booting the board in the Linux+RTOS mode, there is a default system memory map which you can look at within the RTOS SDK in vision_apps/platform/j784s4/rtos/system_memory_map.html

    Best,

    Asha