TMS320LF2407和AT89C55的RS-485串行通信  

Design of Communication Between TMS320LF2407 and AT89C55 Through RS-485

作　　者：刘淑琴[1] 项安[1] 

机构地区：[1]南昌大学信息工程学院电气与自动化系,南昌330029

出　　处：《微处理机》2006年第5期18-20,24,共4页Microprocessors

摘　　要：介绍了TMS320LF2407与AT89C55进行实时通信的硬件接口电路、软件实现方法。通信方式采用串行异步半双工通讯,RS-485三线连接,波特率选用125000bps。通信协议中采用了循环冗余校验CRC,减少差错的发生率。实验结果表明,采用该协议的通信系统具有很好的实用性和可靠性。This paper introduces a communication modebetween AT89C55 and TMS320LF2407 through RS485.Itshardware and software are presented.The communicationprotocol is asynchronous half-duplex protocol.CRC(CyclicRedundancy Check) is adopted to reduce the errorprobability.This system is applied to a new-style metaldetector.Facts have proved that this system has thecharacter of stability and credibility.

关 键 词：单片机 数字信号处理器 RS-485 SCI CRC校验 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]