本驱动程序在s3c2440上实现了两路基于SPI的CAN总线控制器。两通道可以并行，并使用外部定义的两个信号量来通知接收任务收到CAN总线帧，并将其存入预先定义的队列中（帧定义在CAN总线控制器驱动程序的头文件中）。CAN总线控制器的中断引脚分别连接到ARM的EINT3和EINT8_23上-The driver s3c2440 achieved a two-way SPI-based CAN bus controller. Two channels can be parallel, and use the external definition of two semaphore to inform the takeover, received CAN bus fr a me, and store pre-defined queue (fr a me defined in the CAN bus controller driver header file ). CAN-bus controller interrupt pin is connected to the ARM-EINT3 and EINT8_23 on