Arrays in memory

Arye Lerner

Hello,

I use a DSP/BIOS. I have a large 1-D array in my program (50,000 integers). I placed it in SDRAM.

When I use pointers to point to the data in it, it does not work, after advancing pointer for some distance from the origin of the array. I think it is because of it's size it is placed by parts in different location, not nesseserely concequent.

The question is, if I am right about it, can i force in declaration of the array for all its elements to be in concequent order?

If so, how do I do it?

Regards

Arye.

over 15 years ago

0 Joe G. over 15 years ago

TI__Mastermind 25876 points

P. 150 of http://www.ti.com/litv/pdf/spru187o talks about memory models in the C compiler. You probably want to use far if you want to keep static memory. The additional advantage is that you can use #pragma DATA_SECTION on p. 136 to to set the exact location of the array within the C compiler alone.

But since you are using DSP/BIOS, you can use (the more preferable) dynamic memory allocation method of MEM_alloc() as described on p. 205 of http://www.ti.com/litv/pdf/spru423h and still set the exact location of the array (within DSP/BIOS)/

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Arrays in memory