VxWorks下现场总线CAN驱动实现与改进

Realization and Improvement of CAN Field-bus' s Driver for VxWorks

由于车辆计算机集成制造系统的日益发展和控制系统的渐渐复杂化,要实现通过车内电脑终端对每个设备运行状态进行监视和控制,就需要建立上层信息网络与底层控制网络的纵向集成。集散式控制系统已变得不能满足发展的需求,而现场总线技术为解决这个问题提供了途径。文中介绍了在VxWorks下CAN驱动的实现,并通过实验对数据传输稳定性进行测试,通过采用中断-轮询方式对数据接收进行改进,提高了车辆车内控制数据传输的稳定性。

With the development of vehicle computer integration manufacture system and the control system complicated gradually,to a-chieve the monitoring and control through the in-car computer for each equipment running status,need to establish the vertical integration between information network and bottom layer control network. The concentrate control system is not able to meet the requirement of modern vehicle,however,the filed-bus control system has provided a solution to this difficulty. To ensure the stability of control data in the vehicle＆#39;s severe environment,introduce the realization of CAN field-bus driver in VxWorks embedded real-time OS,and through testing data transmission,improve the way of data reception by interrupt-polling.