Disable cache on K60F120

dev25 — Wed, 18 Mar 2015 14:29:55 GMT

Hello,

I am wondering if there is any cache feature in MQX for the Freescale tower K60F120M, and if so, how could I disable it ?

Any help would be grateful,

Best regards,

Camille

Re: Disable cache on K60F120

DavidS — Wed, 18 Mar 2015 16:42:10 GMT

Hi Camille,

MQX setups the Instruction/Data 8Kbyte caches to default setting in BSP init_bsp.c file as follows:

/** Cache settings **/

/* Make sure that cache region settings has correct value(reset value).

This value allow maximal perfomance settings for cache regions because of some regions are:

non-cacheable ,non-cacheable and Write-through or non-cacheable and Write-throug or only Write_back*/

LMEM_PSCRMR = 0xAA0FA000u;

LMEM_PCCRMR = 0xAA0FA000u;

/*folowed 2 functions enable caches (instruction and data cache) and invalidate caches*/

_DCACHE_ENABLE(0);

_ICACHE_ENABLE(0);

You can change the _DCACHE_ENABLE(0); to _DCACHE_DISABLE(0); .

You can change the _ICACHE_ENABLE(0); to _ICACHE_DISABLE(0); .

The respective macros are defined in kinetis.h header.

Regards,

David