基于ARM的多串口扩展及高速485通信设计  

Design of Extended Multiple Serial Port and High-485 Communication Based on ARM

作　　者：易宇航 龙建坡 崔文超 张开法 

机构地区：[1]河南思维自动化设备股份有限公司,河南郑州450001

出　　处：《中国仪器仪表》2013年第5期63-66,共4页China Instrumentation

摘　　要：为解决工业现场应用中对多串口及高速总线通信的要求,采用ARM7嵌入式微控制器LPC2294与SC16C654芯片进行多串口扩展,并在此基础上使用MAX13413芯片实现高速485通信,对LPC2294与串口扩展芯片及485芯片间的接口设计和软硬件设计进行了具体的阐述。实验测试表明该种通信技术稳定可靠,并运用到实际产品中。In order of multiple serial to solve the requirement port and high-speed bus communication in industrial application, Using ARM7 embedded microprocessor LPC2294 and SC16C654 for serial port expansion, and on this basis, using the MAX13413 to realize high-485 communication. This paper specifically describes the interface design and hardware＆software design of LPC2294, serial port expansion chip and 485 chip. The experimental and testing results show that this communication technology stable and reliable, and applied to the actual products.

关 键 词：LPC2294 SC16C654 嵌入式系统 485通信 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构] TP273[自动化与计算机技术—计算机科学与技术]