what is _NCACHE_REGION??

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what is _NCACHE_REGION??

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e_v_spronsen
Contributor II

Is there any documentation about the use of_NCACHE_REGION?

what is does and how to use it?

Thanks!

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4 Replies

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crist_xu
NXP Employee
NXP Employee

Hi, 

    You  can place those var that do need to do the cache maintenance, that means, this region is non-cacheable area.  and you can declare a var like this:

    AT_NONCACHEABLE_SECTION_ALIGN(static uint32_t s_frameBuffer[2][APP_IMG_HEIGHT][APP_IMG_WIDTH], FRAME_BUFFER_ALIGN);

Regards,

    Crist

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e_v_spronsen
Contributor II

Thanks. Do I understand correctly I only need it, if MCU is not in full control of that memory region.

If I don't need it, can I safely remove it from the code?

 

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jeremyzhou
NXP TechSupport
NXP TechSupport

Hi,
Thanks for your reply.
1) If I don't need it, can I safely remove it from the code?
-- Yes, you're right.
TIC

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jeremyzhou
NXP TechSupport
NXP TechSupport

Hi,
Thank you for your interest in NXP Semiconductor products and for the opportunity to serve you.
1)Is there any documentation about the use of_NCACHE_REGION?
what is does and how to use it?
-- To provide the fastest possible support, I'd highly recommend you refer to the application note.
Have a great day,
TIC

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