CAN通信节点设计在车载电动空调上的应用

CAN bus communication nodes design in electric air-conditioning applied in automotive

CAN总线是一种实时性现场总线,广泛应用于汽车领域。针对车载电气系统要求器件抗干扰性能强及处理速度快的要求,文中给出了一种基于ST7单片机,并以MCP2510为CAN控制器的通信节点设计方案,该方案通过标准SPI接口可完成对MCP2510的控制,实现CAN总线协议规范。

CAN bus is a reabtime fieldbus and widely used in automobile. Because of the special requirements for the vehicle electrical system, we usually use the some special electronic modules ,which have strong antiinterference performance ability and high processing speed ability. The article presents a communication nodes design,which is based on the ST7 series microcontroller and CAN controller MCP2510. The Microcontroller ST7FMC2S6 is used to to control the CAN controller MCP2510 by using standard SPI interface. This design fully realized the CAN bus standards.