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EPICS分布式控制系统提供一种Callback机制,实现网络协议和设备驱动中的异步处理,在设备数据或状态变化时设备驱动才读取数据,并传输到网络,减轻网络通讯负荷和控制器CPU负载。本文分析了EPICS的Callback机制,并建立一个用Callback处理中断方式I/O的ADC数据采集的软件开发系统。
EPICS distributed control system provides a Callback mechanism to achieve network protocol and device driver asynchronous processing device data or state changes in device drivers only read data and transmitted to the network to reduce the network communication load and the controller CPU load . This paper analyzes the EPICS Callback mechanism and establishes a software development system for ADC data acquisition using Callback to handle interrupt I / O.