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Data Verification error while loading program ot eZdsp28335

rmb_vector
Intellectual 330 points
Other Parts Discussed in Thread: CCSTUDIO

hi Forum members

 

i have a problem trying to load a .out file on the ezDSP28335 where i get a data verification error at address 0x200000 (start adrs of ext RAM). I have .text mapped to get loaded into external memory in the linker .cmd  file so i suspected it had something to do with getting that external RAM enabled? or perhaps  a config issue.   

thanks

Rob

 

 

  • 0
    TI__Guru**** 173310 points

    Rob,

    I split this into a new thread from where you had originally posted because it was for a different processor family.

    In addition to initializing the external memory interface within your code, when using CCS to load and debug the code, you need to first properly setup the XINTF interface. The GEL files usually contain a function to do this. If you look at the GEL file that gets loaded(F28335.gel), there is a fiunction called XINTF_Enable that does this.  You can customize the GEL file to call this function during OnReset() (whenever the device is reset) or OnPreFileLoaded() (before a file is loaded). You can also explicitly invoke it using the menu item XINTF Enable before loading your program.

     

  • 0 in reply to AartiG
    Intellectual 330 points

    Aarti,

     

    that was indeed the problem. Interestingly enough i had this working on one machine and not another and it turns out that the release of CCS 3.3 on the machine that was working had the call to XINTF_Enable() in the OnPreFIleLoaded() function while the other version of CCS 3.3 did not. I'm not sure if that was the result of upgrading Spectrum DIgital drivers on one machine that might include an update to the CCS gel files found at C:\CCStudio_v3.3\cc\gel or if these gel files are only updated with TI CCS updates. Thanks for the help.

    p.s.  how do i "Verify this answer?"

    Thanks

    Rob

     

     

  • 0 in reply to rmb_vector
    TI__Guru**** 173310 points

    Rob,

    The thread had initially been set to a "discussion" rather than a "question" which was why the "Verify the answer" was not visible. I changed it now and also marked it as answered. Thanks for confirming that the suggestion fixed the issue.