ZHONG Wei-feng, LI Quan-Li, XU Jun. The Design of an Embedded USB Host System Based on ARM[J]. 2010, 15(6): 42-46.DOI:
基于ARM的嵌入式USB主机系统设计
摘要
针对嵌入式系统中应用广泛的USB移动存储设备
设计了基于ARM和SL811HS的嵌入式USB主机控制器
按照USB协议和OHCI规范分层次设计了USB主机系统的软件
并实现了USB大容量存储设备的文件操作.USB主机系统采用模块化设计思想
为用户提供了基于RS232接口和SPI接口的通信协议
提高了系统的易用性.经测试表明
USB主机系统性能稳定
支持FAT16/32文件系统及其各种文件操作
可以实现嵌入式系统中的实时数据存储.
Abstract
In terms of the universally used USB mobile storage device
an embedded USB host controller is designed based on ARM and SL811HS whose software is hierarchically developed according to the USB protocol in addition to the OHCI specification that realizes the operation of files in the USB mass storage device.Moreover
resulting from the adoption of a modular design method in the USB host system
the communication protocol on the basis of RS232 and SPI interfaces is presented to the clients that enhances the util...