精品文献
rs485接口接线怎样操作
基于ARM9与LINUX的RS485总线的通信接口设计
基于ARM9与LINUX的RS485总线的通信接口设计
在ARM9处理器S3C2440上设计RS485通信接口,实现与总线上其他设备的通信,利用ARM9处理器内部集成的UART外设和RSM485CT模块组成RS485通信硬件接口,在嵌入式Linux系统下设计RS485通信程序实现与RS485总线上的其他外设间的数据互通。实验效果良好,表明该设计是行之有效的。文中在介绍了通信接口的硬件设计、Linux下RS485驱动设计、通信程序设计的同时,重点介绍了Linux系统下RS485通信程序的编写方法以及RS485总线上设备通信的实现过程。
rs485电缆制作
Introduction to RS485 RS232 , RS422 , RS423 and RS485 are serial communication methods for computers and devices. RS232 is without doubt the best known interface, because this serial interface is implemented on almost all computers available today. But some of the other interfaces are certainly interesting because they can be used in situations where RS232 is not appropriate. We will conce