双端CAN总线与DSP单端CAN总线报文转发的实现

TRANSMITTING MESSAGE ACHIEVEMENT OF CAN BUS BETWEEN DOUBLE ENDS AND DSP SINGLE END

由于CAN通讯控制器采用半双工方式通讯,若将通讯控制器的接收端和发送端相连,可简化设计亦能够实现通讯,但是无法与收发器连接,从而缩短了通讯距离并降低了抗干扰性.若要与收发器连接,需使用CAN通讯控制器将报文转发.论述了两种CAN总线之间报文转发板的硬件结构及软件设计,并详细说明报文转发的实现方法.

As CAN communication controller communicates by semi duplex mode, it's RXD pin connects with TXD pin that can make the design compactly, but the controller is not connected with transceiver, communication distance is short and the anti-jamming characteristic debases. If the controller will be connected with transceiver, the message must be transmitted by CAN communication controller. Dissertates the hardware structure and software design of two kinds of CAN Bus and illuminates the implement method of transmitting message.