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BF531 CPLB cache Flash problem or not

Question asked by rmbastos on May 24, 2011
Latest reply on May 31, 2011 by PrasanthR

Hi,

 

I'm starting developind with BF531, using VDSP++ 5, update 9. My system has 8MBytes of external memory and 4MBytes Nor Flash.

In loader file, memory is setup according EE-326, for systems using less than 16MBytes.

 

When in CPLB file I have:

{0x20000000, (PAGE_SIZE_1MB | CACHE_MEM_MODE)}

I can see correct values in VDSP (see 1_Dump_CacheEnable.jpg) but are not written in flash.

 

but when I change the address in CPLB to

{0x20000000, (PAGE_SIZE_1MB | CPLB_DNOCACHE)},

I see wrong values in VDSP (see 1_Dump_CacheDisable.jpg) but they are written properly in flash.

 

 

Anyone know why this happens.

 

Thanks

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