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TMS320F28388S: Code Composer Studio and F28388S Memory interface

Yahya Zakaria1
Prodigy 40 points
Part Number: TMS320F28388S


Hello,

When We debug the SDRAM interface with F28388S in the shown custom designsome issues apperaed in the expression view of the CCS V12. Some buffers were created in the far memory and when viewing them in the expression view We see some bad values. 

Note: The SDRAM timing registers are checked with the datasheet of the manufacture.

These issues disappeare on some buffers by changing the numbers of the logged buffers as shown in the attached images, I hope You assisst us in fixing this issue.

Thank You

 

  • 0
    TI__Guru** 115881 points

    Hi,

    Need more detail on the issue. What address location has issue here what what was the expected value ? Is this issue with expression view only ? What happens if you view same address location in memory view ? Does that work fine ?

    Regards,

    Vivek Singh

  • 0 in reply to Vivek Singh
    Prodigy 40 points

    Hello Vivek,

    I followed your instruction,  0xff was written to the memory area as shown in the next figure, an address with a bad value marked in the first figure marked in black.

    I paused the code after uploading 0xff and updated it manually from the expression view and sent without any issue (second figure). 

    When uploading the code the same issue at the same address repeated again.

    Waiting your feedback.

    Yahya

  • 0
    Prodigy 40 points

    Hello Vivek

    Thank You for the support You proposed We detected the cause of the issue, The SDRAM address bus was muxed with some from the ethernet module, both can't be available at the same time.

    The ethernet module was disabled and the SDRAM was fine.

    Thank You

  • +1 in reply to Yahya Zakaria1
    TI__Guru** 115881 points

    Glad to know issue is resolved. Let us know if you have any further queries.