基于ARM的嵌入式USB主机系统设计  

The Design of an Embedded USB Host System Based on ARM

作　　者：仲伟峰[1] 李全利[1] 徐军[1] 

机构地区：[1]哈尔滨理工大学自动化学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2010年第6期42-46,共5页Journal of Harbin University of Science and Technology

基　　金：黑龙江省教育厅科学技术研究项目(11521050)

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.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 utilization of the constructed system.Finally,a test is implemented and the obtained results indicate that the proposed USB host system maintains a high stability which supports the FAT16/32 file system and can achieve the real-time data storage in the embedded system additionally.

关 键 词：S3C44B0X SL811HS USB主机 海量存储类 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]