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Hi, I'm using HPI to read some memory addresses from my c6711DSK - "semaphore" below. These addresses are mapped to RAM. I have L2 Caching set to 2-way to free up the bottom 32kBytes of internal memory. My code looks something like this - #pragma DATA_SECTION(semaphore, "SEMAPHORE") Uns semaphore = 0; Uns sem=0; ... CACHE_flush(CACHE_L2ALL, (void *)0, 0); if(count=!800) { semaphore = sem; } I'm wondering do I need to flush all of the cache? If not, how do I establish where to flush. I'm using some arrays also in a similar way to the semaphore variable above. These arrays are used to ping-pong data to my PC based application. I'm hoping I can aviod the use of the CACHE_flush(CACHE_L2ALL, (void *)0, 0) call because it is loading my processor and causing my to miss some samples from my Codec. Perhaps I could declare the variable "sem" above in such a way as to avoid them being cached. Perhaps I could map "sem" to RAM also - maybe?? and the arrays I'm using also. Cheers, Joe. |
CACHE_flushing
Started by ●October 29, 2004
