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介绍了CAN总线的PCI接口通信卡的硬件电路和通信主控程序的设计以及驱动程序的开发,利用PCI接口芯片和双口RAM以及微控制器实现工业现场总线CAN总线节点与工控机之间的通信,设备驱动程序在实时嵌入式操作系统Vxworks下开发。
The hardware circuit and communication master program design and driver development of PCI interface communication card of CAN bus are introduced. The interface between CAN bus node and industrial computer is realized by using PCI interface chip, dual port RAM and microcontroller Communication, device driver in the real-time embedded operating system Vxworks development.