基于USB接口485总线设备检测系统设计

The 485-bus device detection system design based on USB interface

本文介绍USB接口的485设备通信板卡和485设备检测软件的设计过程。板卡设计采用Cypress公司68013USB接口控制芯片,利用控制芯片的IO端口,通过FPGA芯片实现与485总线设备的通信。同时开发USB设备异步驱动,采用VC++开发环境,设计了485设备检测系统。

This article introduces the process of designing the communication board between 485- bus and USB and 485-device de- tection system. Applying USB 68013 interface control chip, through IO ports controlled by FPGA, implements the communication with 485-device. Explore an asynchronous driver of USB device and design the 485 device＇s detect and control system under VC＋＋ environment.