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TI Home » TI E2E Community » Support Forums » Development Tools » TI C/C++ Compiler » TI C/C++ Compiler - Forum » How to define and use a very large array on TMDXEVM6678LE?
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How to define and use a very large array on TMDXEVM6678LE?

How to define and use a very large array on TMDXEVM6678LE?

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Haifei Wu
Posted by Haifei Wu
on Apr 05 2012 09:04 AM
Prodigy220 points

I am using board TMDXEVM6678LE to learn DSP. Now I am confused with how to define and use a vary large array. This array's size may be large as 10,000 or 100,000.

C6678 Large Array
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  • George Mock
    Posted by George Mock
    on Apr 05 2012 12:42 PM
    Guru51290 points

    I'm sorry, but this question is too vague.  Please describe how you tried to do one particular thing (not everything!), and what happened when you did it.  In the meantime, this FAQ list may be useful http://c-faq.com/aryptr/index.html .

    Thanks and regards,

    -George


    TI C/C++ Compiler Forum Moderator
    Please click Verify Answer on the best reply to your question.
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    Track an issue with SDOWP. Enter your bug id in the "Find Record ID" box.

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  • Haifei Wu
    Posted by Haifei Wu
    on Apr 05 2012 20:54 PM
    Prodigy220 points

    Hi George,

    I want to use a very large array whose size is not known on TMDXEVM6678LE and in CCS5.0.3. This program is running on core0. In the source file, I defined a pointer and use the " malloc " to  allocate a memory block for pointer like " pAmpltdKnown = (float *) malloc(arraySize * sizeof(float)); ". If I change the arraySize to 1000, system can successfully allocate, but if the arraySize is 10,000, system failed it. Can you tell me how to solve this problem?

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  • George Mock
    Posted by George Mock
    on Apr 06 2012 13:59 PM
    Verified Answer
    Verified by George Mock
    Guru51290 points

    You need to make the heap bigger.  Use the --heap linker option.  It is described in the C6000 Assembly Language Tools book.

    Thanks and regards,

    -George


    TI C/C++ Compiler Forum Moderator
    Please click Verify Answer on the best reply to your question.
    The Compiler Wiki answers most common questions.
    Track an issue with SDOWP. Enter your bug id in the "Find Record ID" box.

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