DSP与MAX3140 UART数据通信的设计与实现  

Design and realization of data communication based on DSP and MAX3140 UART

作　　者：郭瑞君[1] 侯成刚[1] 刘晓晖[1] 

机构地区：[1]西安交通大学,陕西西安710049

出　　处：《仪器仪表用户》2005年第2期59-61,共3页Instrumentation

基　　金：湖南省机械设备健康维护重点实验室开放基金资助(KFJJ0401)

摘　　要：基于RS-485总线构建的分布式监测网络具有数据传输距离远、组态灵活,可靠性高,成本低等优点。本文采用了通用异步收发器MAX3140实现DSP与RS-485网络的数据通信,介绍了MAX3140的主要功能和使用特点,以及TMS320VC5402的多通道缓冲串口(McBSP)的时钟停止模式(SPI);给出了接口的硬件电路和基于RS-485通信协议的通信测试软件设计。The distributed supervision network based on RS-485 network has advantages of long distance for data transmission, flexible configuration, high reliability, low cost, ect. In this paper, data communication between DSP and RS-485 network is implemented by using Universal Asynchronism Receiyer-transmitter MAX3140, and main characteristics and usage of MAX3140, as well as clock stop mode of Multi-channel Buffered Serial. Port (McBSP) of TMS320VC5 402 are introduced. Moreover, the design of interface circuit between McBSP and MAX3140 and communication test software based on RS-485 communication protocol are presented.

关 键 词：MAX UART SPI DSP 接口 分布式 数据通信 通用异步收发器 MCBSP TMS320VC5402 

分 类 号：TH714[机械工程—测试计量技术及仪器] TP317.4[机械工程—仪器科学与技术]