双通道通信管理机软硬件设计  

Software and Hardware Development of Dual-channel Communication Management Machine

作　　者：王宏波 Wang Hongbo(University of Shanghai for Science and Technology,Shanghai 200093,China)

机构地区：[1]上海理工大学

出　　处：《农业装备与车辆工程》2019年第5期74-79,共6页Agricultural Equipment & Vehicle Engineering

摘　　要：设计了一种同时支持4G无线传输和有线传输的通信管理机。以处理器的控制器主板为核心,进行了总体硬件原理设计,设计了以太网口的硬件原理图和CAN总线接口;设计了系统电源、实时时钟等单元。软件系统移植了Linux引导程序、内核和文件系统;研究了以GPMC总线作为通信桥梁,使用内核中8250类型的串口程序驱动扩展串口正常工作的机制,实现了扩展4路RS485串口;搭建了调试平台。实验表明,设计的RS485串口通信正常,符合系统设计的技术指标。A communication manager supporting 4G wireless transmission and wired transmission is designed in this paper.The overall hardware principle is designed with the core of the processor controller as the core.The hardware schematic and CAN bus interface of Ethernet port are designed.At the same time,the system power supply,real-time clock and other units are designed.The software system has transplanted Linux bootloader,kernel and file system.The GPMC bus is used as the communication bridge.The type 8250 of serial port drivers in the kernel extends the serial port to work normally,and expands the 4-way RS485 serial port.A debug platform is built. Experiments show that the designed RS485 serial communication is normal,which accords with the technical specifications of the system design.

关 键 词：通信管理机 CAN总线接口 LINUX系统 RS485串口 

分 类 号：TN929.5[电子电信—通信与信息系统]