Advanced System Optimization

Implement a DMA-driven transfer from a peripheral to memory (e.g., for UART or ADC).

Integrate DMA with an SPI driver to enable high-throughput, non-blocking data transfers.

Describe processor low-power modes (e.g., Sleep, Stop, Standby) and their wake-up sources.

Implement a tickless idle hook in an RTOS to place the processor in a low-power state.

Implement clock gating by selectively enabling and disabling peripheral clocks to reduce dynamic power consumption.