PC与TMS320C54x基于RS485的异步串行通信的实现  

Implement of RS485 Serial Asynchronous Communication Between PC and TMS320C54x

作　　者：孙万川[1] 张蕴玉[1] 

机构地区：[1]华中科技大学,湖北武汉430074

出　　处：《现代电子技术》2003年第23期75-77,84,共4页Modern Electronics Technique

摘　　要：研究了 RS4 85串行通信标准的特点和基本原理 ,以及如何通过 PC机自带的 RS2 32通信接口转换为 RS4 85接口。在 PC机部分结合 C++Builder,阐述了如何在 Windows平台上应用多线程技术 ,进行串行通信的通信流程和核心代码的实现。在 DSP部分采用通用 I/O实现 DSP与 PC机串行通信 ,文中阐述了 DSP部分的线路连接和通信流程。实践证明该方法简单、可靠、灵活 。The principle and characteristics of RS485 serial communication has studied in this paper, and how to transform the RS232 in PC to RS485 In the communication software in PC, we use C ++ Builder to explainhow to apply multithread technique in Windows platform, and communication flow and core code of software are discussed In the DSP part, we use universal I/O to implement the serial communication between the DSP and PC The design of software and hardware in DSP is also analysized The application in this paper has been proved by practice It is simple, reliable and flexible It performs well in realtime control and data communication

关 键 词：串行通信 C^++BUILDER DSP RS485 

分 类 号：TN915[电子电信—通信与信息系统]