• State
  • Locked Locked
  • Replies 1 reply
  • Subscribers 101 subscribers
  • Views 306 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

memory_contigalloc problems of DM6437

li li2
Prodigy 50 points

Hello!

I want to create a contiguous buffer  to store 20 frames of image data in DM6437.  My choice is to use "memory_contigalloc " , but it fails.  In fact,  the heap size of DDR2 is set as 0x02000000 by the graohic DSP/BIOS Configuration Tool ,which is enough for storing data. DDR2 properties and MEM properties is as bellows:

    

1. DDR2 properties

 

2. MEM properties

question 1: How did that failure happen? What should we pay attention to before using that function?

question2:  Both memory_contigalloc, MEM_alloc and BUF_alloc can be used to creat large buffers. What is the differrence for different applications?

  • 0
    TI__Mastermind 35645 points

    Hi,

    Thanks for your post.

    It all depends on how the linker splits the output sections among multiple memory ranges to achieve an efficient allocation. Please refer sections 8.5.4.6 & 8.5.4.7 in the c6000 assembly language tools user guide as below:

    http://www.ti.com/lit/ug/spru186x/spru186x.pdf

    Thanks & regards,

    Sivaraj K

     -------------------------------------------------------------------------------------------------------
    Please click the Verify Answer button on this post if it answers your question.
    -------------------------------------------------------------------------------------------------------