基于ARM7TDMI的OHCI控制器驱动程序设计  

OHCI Host Controler Driver Design Based on ARM7TDMI

作　　者：裴晓勇[1] 李俨[1] 赵凯瑞[1] 

机构地区：[1]西北工业大学自动化学院,西安710072

出　　处：《微处理机》2012年第3期87-90,共4页Microprocessors

摘　　要：OHCI(Open Host Control Interface)作为USB主机控制器的国际标准之一,已经广泛应用于各种电子设备中。目前OHCI主要应用于高端嵌入式电子产品中,对操作系统的体系结构较为依赖,相应的驱动程序在实时性要求较高和硬件资源简单的环境中不能直接移植与应用。为了解决此问题,需要开发独立于操作系统平台的驱动程序。通过与采用ARM7TDMI内核的LPC2478硬件平台相结合,可实现所需要的拥有USB主机功能的嵌入式应用平台。OHCI （Open Host Control Interface） as one of the international standards of USB host controUem, has been widely used in various electronic devices. Currently OHCI are mainly used in electronic products of high - end embedded applications. It is highly dependent of the operating system architecture, therefore, the driver is not able to be used in real -time environments or limited hardware resource environments. In this paper, we developed a platform - independent operating system driver. With the use of the ARM7TDMI core LPC2478 as the hardware platform we achieved e simple embedded platform with USB host functionality.

关 键 词：USB主机驱动程序 嵌入式系统 端点描述符 传输描述符 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]