单片机与嵌入式系统应用Issue(4)：13-16,4.
嵌入式系统应用中实现RS485的方向切换
RS485 Direction Switching Based on Embedded System
吴丽萍 1戈志明1
作者信息
- 1. 苏州工业园区职业技术学院，苏州 215123
- 折叠
摘要
Abstract
RS485 interface with good noise immunity,long transmission distance and multi-station capacity and other characteristics, makes it the first choice for industrial control serial interface.It is also widely used in embedded systems as a serial interface to control the device.Two-wire differential wiring mode is used in RS485 for serial data transmission.Sending and receiving are carried out using these two differential lines,so it is half-duplex mode.Based on the characteristics of RS485,this paper describes the way through hard-ware and software means to achieve the switch.This article focuses on RS485 direction switching function with the embedded platform DM8168.关键词
RS485 方向切换/DM8168/U-boot-2.6.10/Linux-2.6.37Key words
RS485 diretion switching/DM8168/U-boot-2.6.10/Linux-2.6.37分类
计算机与自动化引用本文复制引用
吴丽萍,戈志明..嵌入式系统应用中实现RS485的方向切换[J].单片机与嵌入式系统应用,2014,(4):13-16,4.
