【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。更多还原

【Abstract】 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.更多还原