Hi,
Looking into STM32CubeN6\Projects\STM32N6570-DK\Examples\SD\SD_ReadWrite_DMA example,
I see that quite heavy operations are used:
SCB_CleanDCache_by_Addr (aTxBuffer, BUFFER_SIZE);
// ...
SCB_InvalidateDCache_by_Addr (aRxBuffer, BUFFER_SIZE);
while the aRxBuffer[] and aTxBuffer[] are located in a noncacheable memory region.
uint8_t aTxBuffer[BUFFER_SIZE]__NON_CACHEABLE;
uint8_t aRxBuffer[BUFFER_SIZE ]__NON_CACHEABLE;
Could you please explain why?
Regards,
A
