基于WinCE的I/O控制软件设计  

Design of I/O control software based on WinCE

作　　者：党晓辉[1] 谢华[1] 戴志坚[1] 

机构地区：[1]电子科技大学自动化工程学院,成都611731

出　　处：《电子测量技术》2009年第9期100-102,110,共4页Electronic Measurement Technology

摘　　要：为了实现ARM芯片对FPGA等外部设备的控制,分析了WinCE系统的虚拟内存模型,通过虚拟内存映射,配置芯片寄存器,将地址总线上的外部设备的物理地址映射到CE系统的虚拟地址,然后使用指向虚拟地址的指针读写外部设备的I/O端口,实现了应用软件对外部设备I/O端口的控制。本模块已应用于仪器开发项目中,具有实际的使用价值。To control the external device like FPGA with ARM, WinCE system memory modal is discussed in this paper. After virtual address mapping, the special register in CPU is configured. Then, the external device＇s physical address is mapped as part of the virtual memory address. Using pointer, which points to the virtual address, to read and write that address, a solution of how to control the external equipment with ARM is archived. This solution has been successfully used in an instrument research project.

关 键 词：地址映射 虚拟内存 端口控制 

分 类 号：TP315[自动化与计算机技术—计算机软件与理论]