Introduction

In modern computing systems, efficient data transfer mechanisms are crucial for maintaining high performance and responsiveness, especially in applications that handle large volumes of data. Direct Memory Access (DMA) is one such mechanism that is pivotal in optimizing data movement. The DMA significantly reduces processing bottlenecks by allowing hardware subsystems to access the system independently of the CPU. Additionally, the use of a dedicated DMA controller ensures that data transfers are managed seamlessly further enhancing system efficiency and performance.

This document describes how to configure and use DMA with peripherals, such as the SPI on PIC32CZ CA and SAM E/S/V family of devices using MPLAB® Harmony v3 and MCC.