基于XMC4500的智能USB-CAN接口模块设计  

Design of Intelligent USB-CAN Interface Module Based on XMC4500

作　　者：何海波[1] 

机构地区：[1]江苏自动化研究所,江苏连云港222061

出　　处：《计算机测量与控制》2015年第3期983-986,共4页Computer Measurement &Control

基　　金：国家自然科学基金(61303045);江苏省自然科学基金(BK2012237)

摘　　要：现有的USB-CAN接口模块存在不支持多应用同时访问、滤波算法简单、需要外接终端电阻等缺点或不足;提出了一种新的智能USB-CAN接口模块设计方法,硬件上选用XMC4500作为主控制芯片,并通过固态继电器控制终端电阻;固件上采用软硬件结合的多级FIFO技术和基于位图与列表项的滤波算法;上位机软件则运用基于虚拟CAN的驱动设计方法和基于生产者/消费者模型的数据分发机制;设计的接口模块功能强大、性能稳定可靠,具有支持多应用同时访问、提供复杂的软硬件智能滤波算法、能够通过软件设置终端电阻等诸多优点,可以用于各种基于PC的CAN总线通信数据分析与监测场合中。The USB--CAN interface modules in the market usually have some disadvantages or shortages, such as not support multi-- application accessing, use simple hardware ID filtering, need external terminal resistor, etc. The paper introduced the design of a new intelligent USB--CAN interface module. It uses XMC4500 as the main chip and solid state relay to control terminal resistor. The firmware utilizes multistage FIFO and ID filtering based on bitmaps and list items. The PC software applies driver design based on virtual CAN and data distribution based on producer/consumer model. The module has rich functions and high performance, with features of multi--application accessing, smart ID filtering and software terminating; it can be widely used in a variety of CAN analyzing and monitoring applications.

关 键 词：XMC4500 接口模块 虚拟CAN 智能滤波 软件端接 

分 类 号：TP336[自动化与计算机技术—计算机系统结构]