STM32F7 @ 192MHz: long data copy time? Hello again,I recently checked the time the STM32F7 (192MHz) needs to copy one 32bit buffer to another one, and I'm a little shocked about how long that takes.(Maybe I expect too much, coming from 8bit µCs with 20MHz, an STM32 still feels like a racing car compared to a horse carriage)For time measurement the interrupts are disabled and the PTP registers are used.It takes about 38µs to copy a uint32_t buffer[256] to another one, that is about 28 cycles @192MHz. Okay, there's the for-loop comparison and increment, but still, 28 cycles?Anything I oversee or is that just it?I know it can be a long way from C to assembler, and I haven't checked that yet (never even looked at the STM32 / ARM assembler stuff), but the list excerpt below shows some 17 CPU actions for the for-loop - right?Here's the uart/debug output:*.c:#define RPM_DMA_BUF_MAX 256
uint32_t u32RpmDmaBuf[2][RPM_DMA_BUF_MAX] = { { 0 } };
uint32_t u32RpmUartBuf[RPM_DMA_BUF_MAX];
uint32_t *pu32SrcBuf;
uint32_
