基于多主型SPI接口的CAN总线中继器设计  

Design of Repeaters Based on Multi-master SPI for CAN Bus

作　　者：王亮[1] 杜洪亮[2] 魏衡华[1] 张培仁[1] 

机构地区：[1]中国科学技术大学自动化系,合肥230027 [2]中国人民解放军炮兵学院基础部计算中心,合肥230031

出　　处：《自动化与仪表》2009年第3期18-21,共4页Automation & Instrumentation

摘　　要：CAN总线中继器是一种被广泛用于远程数据通讯的大型工程,中继器的主要功能为延长通讯距离以及扩展总线网络,所以其本身的设计质量也将关系到整个大型系统质量的评价。该文从硬件和软件设计方面提出了一个采用双MCU设计CAN总线中继器的思路,两个MCU之间采用SPI总线协议,使得系统具有更好的稳定性和实时性。最后对系统进行了实验,并对整个系统进行简单的性能分析。The repeater for CAN-bus is widely used in major engineering with long-distance data transmission. Since the main function of repeater is the extension of the distance of transmission and the network of the field-bus,the quality of its design is part of the characteristic of the whole system. The purpose of the paper is to introduce a new design of repeater based on double-MCU for CAN bus about the hardware and software design. The two MCU communicated with the SPI Bus to make the system much more stability and real-time performance. At last,some experiments are done after the whole system is finished in this way. A simple performance analysis about the whole system is given at the end of the paper.

关 键 词：控制器局部网 中继器 多主 双MCU SPI接口 

分 类 号：TN915.05[电子电信—通信与信息系统]