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DSP与MAX3140 UART数据通信的设计与实现
引用本文:郭瑞君,侯成刚,刘晓晖.DSP与MAX3140 UART数据通信的设计与实现[J].仪器仪表用户,2005,12(2):59-61.
作者姓名:郭瑞君  侯成刚  刘晓晖
作者单位:西安交通大学,陕西,西安,710049
基金项目: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13(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。

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
文章编号:1671-1041(2005)02-0059-03
修稿时间:2004年12月15

Design and realization of data communication based on DSP and MAX3140 UART
GUO Rui-jun,HOU Cheng-gang,LIU Xiao-hui.Design and realization of data communication based on DSP and MAX3140 UART[J].Electronic Instrumentation Customer,2005,12(2):59-61.
Authors:GUO Rui-jun  HOU Cheng-gang  LIU Xiao-hui
Abstract: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.
Keywords:McBSP  MAX3140  SPI  RS-485 communication
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