一种基于NDIS的实时调度实现方法

A real-time scheduling based on NDIS

针对现场总线对实时性的要求,结合当前成熟的以太网技术,提出了一种基于NDIS的实时调度方法.阐述了RM调度算法、NDIS网络驱动程序接口规范、NDIS网络驱动程序接口函数和中间驱动程序的特性.利用中间驱动程序插入实时层,给出实现调度的原理,用C语言实现了部分原代码.此方法实现简单,容易移植到系统,具有很好的兼容性.

In order to solve the real time for the field bus with the well developed Ethernet technology, a method of real time scheduling based on NDIS is presented with an explanation of the RM scheduling algorithm, the interface specification of the NDIS'S network drivers and the interface function of the NDIS'S network driver and the characteristic of intermediate drivers . With the intermediate drivers inserted onto real time layer and the principle and some original codes given , the scheduling with C language can be easily realized. This method is good and easy to transplant to the system with a good compatibility.