摘要
介绍了串口扩展芯片GM8125的特性，设计了基于该芯片和8051单片机的多路串口收发器，程序算法及硬件电路实现了多达4台子设备（电子天平）到主设备（打印机）数据标号传输，并有效地解决了GM8125芯片多路并行工作时的出现的乱码和数据混乱的问题。系统使用方便，实时性好，扩展方便，取得了良好的实际应用效果。
The characteristics of GM8125, a kind of serial expansion chip,are first introduced. Then a multi-channel serial transceiver is designed based on GM8125 and 8051 MCU. The software program and hardware circuit realized sending and receiving upto 4 channels of datas from sub-equipments （electronic scales） to the host- equipment （printer）, and effectively solved the problem of chaos of data while parallel and multi-channel data transceiving. The system is not only easy and convenient to use, but also easy to extend its own function. Finally a good result has been obtained in practical application.
作者
张成瑞
李见为
王刚
ZHANG Cheng-rui, LI Jian-wei, WANG Gang （1.Key Lab. of Opto-Electronic Technology ＆ System of the Education Ministry, Chongqing University, Chongqing 400044, China; 2. Chongqing Academy of Metrology and Quality Inspection Institute, Chongqing 400030, China）
出处
《电脑知识与技术》
2011年第4期2422-2424,2434,共4页
Computer Knowledge and Technology
