电子工程专辑

【STM32】DMA基本原理、寄存器、库函数

DMA，全称Direct Memory Access，即直接存储器访问。 DMA传输将数据从一个地址空间复制到另一个地址空间，提供在外设和存储器之间或者存储器和存储器之间的高速数据传输。当CPU初始化这个传输动作，传输动作本身是由DMA控制器来实现和完成的。DMA传输方式无需CPU ...
电子工程专辑

干货 | 一文讲透STM32串口DMA收发机制

直接存储器访问（Direct Memory Access），简称DMA。DMA是CPU一个用于数据从一个地址空间到另一地址空间“搬运”（拷贝）的组件，数据拷贝过程不需CPU干预，数据拷贝结束则通知CPU处理。因此，大量数据拷贝时，使用DMA可以释放CPU资源。DMA数据拷贝过程，典型的有 ...
EDN

Direct Memory Access (DMA) Control

This document describes how to set up the DMA (Direct Memory Access) and also gives an outline of the operation and describes the procedures for using a sample program. The features of the operation ...
Bleeping Computer

Some Windows 10 Devices Still Exposed to DMA Attacks That Can Steal BitLocker Keys

An upcoming Windows 10 Insiders Build version will include a patch that will improve the protection against DMA attacks that could allow attackers to extract BitLocker encryption keys and other ...