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From F2812 to F28335

Meral Özarslan
Prodigy 210 points

Hi

I have done my projects with TMF320F2812 on ezdspF2812 so far. I have to use ezdsp F28335 because of the limited memory. The memory of 2812 isn't enough because I began to use Fuzzy logic control. I use  CCS 3.3 and I think I installed all necessary files. But when I build my program from Matlab/Simulink altough CCS dosn't give an error, I can't see anything from oscilloscope when I used ezdsp F28335. (I use Simulink demo, constant PWM demo) CCS only gives GEL OUTPUT window: GEL will enable XINTFx16 during DEBUG only. Enable XINTF in code prior to use.

May this cause nothing seeing from oscilloscope?

 After a while CCS gives an error like that:

"Unexpected Fatal Error Encountered which may have been caused by a stack overflow,out of memory condition,or access violation.

I'm going to try and save your work before TERMINATING this application."

What can I do about these problems? What do you suggest how I can begin with F28335? Thanks...

 

  • 0
    Expert 1070 points

    Hi, When you say the "memory is not enough" on ezdsp f2812 do you mean the RAM or flash? 

    The eZdsp F2812 has an additional 64K word SRAM off chip that you can access if all 18K word onchip rams are used. 

    And make sure your CCS is up to date (check updates). You can try to use the CCS4 as well see if it produces the same problem.

    There is a makefile option from the Simulink. which will produce the .out file and you can load it from CCS3.3 or CCS4.

     

    hth

     

  • 0 in reply to Leong
    Prodigy 210 points

    Thank you Leong

     

    I couldn't manage to use the other memory options with F2812 and my adviser wants me to make projects with F28335. I think I solved the problem. My emulation driver wan't installed properly. So I removed all the programs about dsp and installed again and I saw thePWM. But my project is big and I wish I will not face to face with problems. I think I don't need to pass to CCS4. Thanks...