基于ASIX-OS^1的USB Host系统软件的实现与应用  

Implementation and Application of USB Host System Software Based on ASIX-OS^1

作　　者：肖凌[1] 凌明[1] 

机构地区：[1]东南大学国家专用集成电路系统工程技术研究中心,南京210096

出　　处：《电子器件》2007年第3期1102-1104,1108,共4页Chinese Journal of Electron Devices

基　　金：ASIX-OS是由东南大学国家专用集成电路系统工程技术研究中心自主研发的嵌入式操作系统平台项目资助

摘　　要：随着通用串行总线的应用日益广泛,在嵌入式系统中构造USB通信接口,特别是USB主机接口成为一项重要的技术.由于USB主机端软件结构的复杂性,作为其核心的USB系统软件的实现将对USB通信系统的工作效率起到决定性作用.文章分析了USB总线系统和主机端的软硬件构成,提出了在实时操作系统ASIX-OS中构建USB主机协议栈与系统软件的方法和具体实现,并结合具体的应用指出了其适用环境与性能.As the accelerated adoption of Universal Serial Bus （USB）, USB, especially USB host, has become an important technique in an embedded system. Because of the complexities of USB host software, the implementation of USB system software, which is also the core of USB host, will play an important part in an USB communication system. This paper gives an analysis of USB BUS system and HW/SW structures of USB host firstly, and then, presents a description of implementation of USB host stack and USB system software based on ASIX-OS RTOS and a detail application which provides the applicable environment and its performance.

关 键 词：嵌入式系统 通用串行总线BUS USB主机 USB主机系统软件 

分 类 号：TN27[电子电信—物理电子学]