基于MCP2502X/05X的CAN总线节点设计  

CAN node design based on MCP2502X/05X expanders

作　　者：金佛荣[1] 唐臻宇[1] 耿海翔[1] 李根[1] 

机构地区：[1]四川大学物理科学与技术学院,四川成都610065

出　　处：《电子设计工程》2009年第11期125-127,共3页Electronic Design Engineering

摘　　要：针对当前CAN总线及J1939协议在汽车电子中的广泛应用,给出一种通过配置在低成本CAN I/O扩展器MCP2502X/05X器件上实现J1939协议的CAN总线节点的设计方法。详细介绍扩展节点的配置方法和主节点的软件设计方法。该系统具有结构简单、性能稳定和高性价比的优点,在车载CAN网络中具有广阔的应用前景。In view of CAN bus and J1939 protocol are widely used in the measurement and control system,this paper gives a CAN node design method about how to realize the J1939 protocol with low cost CAN I/O expanders MCP2502X/05X expanders through configuration.This paper detailedly introduces the expander node configuration method and the master node software design method. This system boasts the simple structure, the easy realization, the stable performance and the higher performance-to-price ratio, and has the broad application prospect on auto CAN network system.

关 键 词：CAN总线 J1939 扩展节点 CAN I/O扩展器 

分 类 号：TP211[自动化与计算机技术—检测技术与自动化装置]