说明：  】CAN 总线是当前较为流行的技术，介绍了CAN 总线的主要特性，简述了SJA1000 和 PCA82C250 的结构和工作原理，并基于此设计了CAN 总线接口，给出了系统硬件电路设计和SJA1000 的初始化、接收、发送报文的软件流程，为后续的CAN 总线应用给出一定参考。
(] CAN bus is currently more popular technology, introduces the main features of the CAN bus, SJA1000 and PCA82C250 outlined the structure and working principle, based on the design of the CAN bus interface, gives the system hardware circuit design and the beginning of the SJA1000 initialization, receiving, sending packets of software processes, applications for the follow-up CAN-bus is given a certain reference.)