本文主要介绍了在采用EPP协议的CAN总线监控节点的设计中的主要问题、解决方案及最后实现，同时对EPP协议和虚拟设备驱动程序的编写做了简单介绍。%This paper mainly introduces the key problems, solution projectand the completion of the CAN bus monitor adopting EPP protocol, it also includes the overview of the EPP protocol and the programming with VxD.
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