Use DMA to offload high-throughput peripheral transfers on a microcontroller, covering channel configuration, double-buffering, interrupt handling, cache coherency, and freeing the CPU for real work.
## CONTEXT When a microcontroller must move data fast, between an ADC and memory, an SPI display and a framebuffer, a UART and a ring buffer, or memory and memory, doing it byte by byte in the CPU wastes cycles and misses deadlines. Direct Memory Access offloads these transfers to dedicated hardware that moves data…
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