基于ARM的RS-485转网口数据中继设计  

Design of RS-485 to Network Port Data Relay Based on ARM

作　　者：邓祥忠 徐全元 鲁莹 DENG Xiang-zhong;XU Quan-yuan;LU Ying(College of Big Data and Intelligent Engineering,Southwest Forestry University,Kunming 650224,China)

机构地区：[1]西南林业大学大数据与智能工程学院,云南昆明650224

出　　处：《电脑知识与技术》2021年第1期43-44,60,共3页Computer Knowledge and Technology

摘　　要：为了满足某些工农业场合需要将在本地的基于RS-485通信协议的数据上传至互联网的需求。设计了一个基于ARM的RS485通信接口与以太网通信接口相互转换的数据中继系统。系统采用STM32F429作为主控芯片,MAX485作为RS-485接口芯片,W5500作为以太网接口芯片,实现了通信接口的转化、多节点数据处理以及无网络时数据的储存等功能。并且配合实时操作系统μC/OS-Ⅲ进行系统任务代码的设计,同时基于STemWin设计了人机交互界面,最终提高了系统的实时性和稳定性。In order to meet the needs of some industrial and agricultural occasions to upload local data based on the RS-485 communication protocol to the Internet,a data relay system based on ARM-based RS485 communication interface and Ethernet communication interface is designed.The system uses STM32 F429 as the main control chip,MAX485 as the RS-485 interface chip,W5500 as the Ethernet interface chip,realizes the conversion of communication interface,multi-node data processing and data storage when there is no network.And cooperate with the real-time operating system μC/OS-Ⅲ to design the system task code,and design the human-computer interaction interface based on STemWin,which finally improves the real-time performance and stability of the system.

关 键 词：数据中继 STemWin μC/OS-Ⅲ W5500 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]