CACHE
HAL CACHE module provides statistical functionality for HCPU CACHE MISS rate, can individually or simultaneously count ICACHE and DCACHE miss rates.
Can also set address ranges for statistics, supports individual or simultaneous statistics for the following address regions:
QSPI1_4, address space: 0x10000000~0x13FFFFFF
QSPI2, address space: 0x64000000~0x67FFFFFF
QSPI3, address space: 0x68000000~0x6FFFFFFF
OPSRAM, address space: 0x60000000~0x63FFFFFF
For detailed API documentation, refer to CACHE
Using HAL CACHE
void enable(void)
{
/* Enable ICACHE and DACHE miss rate profiling, range is QSPI1/2/4 memory space */
HAL_CACHE_Enable(HAL_CACHE_ICACHE_QSPI1_4 | HAL_CACHE_ICACHE_QSPI2,
HAL_CACHE_DCACHE_QSPI1_4 | HAL_CACHE_DCACHE_QSPI2);
}
void read(void)
{
float irate;
float drate;
/* read cache miss rate and reset counter */
HAL_CACHE_GetMissRate(&irate, &drate, true);
}
void disable(void)
{
/* Disable ICACHE and DCACHE miss rate profiling */
HAL_CACHE_Disable();
}