| 基于双单片机的数据通信模块的设计 |
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| 引用本文： | 高红红.基于双单片机的数据通信模块的设计[J].现代电子技术,2005,28(23):76-77,84. |
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| 作者姓名： | 高红红 |
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| 作者单位： | 西安工业学院,陕西,西安,710032 |
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| 摘 要： | 介绍一种基于双单片机技术的数据通信模块,他主要由2个AT89C2051单片机,调制解调芯片和RS 485总线接口芯片构成.该模块通过普通铁路电话线实现了车站信号的接力式传输,通过软件模拟SPI总线实现了两单片机之间的数据通信.该设计方法不仅简化了系统结构,分散了单片机的工作任务,而且增强了系统的实时性和可靠性,提高了通信效率.
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| 关 键 词： | 单片机 SPI总线 数据通信 调制解调 |
| 文章编号： | 1004-373X（2005）23-076-02 |
| 收稿时间： | 2005-09-15 |
| 修稿时间： | 2005-09-15 |
Design of Data Communication Module Based on Double SCM |
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| GAO Honghong.Design of Data Communication Module Based on Double SCM[J].Modern Electronic Technique,2005,28(23):76-77,84. |
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| Authors: | GAO Honghong |
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| Abstract: | A kind of data communication module based on double SCM(single chip microcontroller) is introduced,which is made up of two SCM,MODEM chip and interface chip of RS485 Bus.It realized relay transmission of signals between stations by common telephone line and serial data communication between two SCM by simulated SPI Bus.This design not only simplifies system configuration and decentralizes assignment of SCM,but also boosts up realtime performance and reliability of the system,thus it improves communication efficiency. |
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| Keywords: | SCM SPI Bus data communication modulation and demodulation |
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