嵌入式环境中消息控制系统的一种基于状态机的实现

A FSM-based implementation of event control system under embedded environment

对讲机软件是一种典型的嵌入式环境的软件,一般分为VRIS层、信令层、人机界面层3个部分来设计,其高层即人机界面层是整个对讲机软件的消息流控制中心,其核心部分应该是高效可靠,并且易于扩展。介绍了一种控制系统的基于有限状态机的实现,该方法简洁高效并且扩展性强,用于对讲机软件中,实践证明是一种非常有效的方法。

The radio software is a typical kind of the embedded environment software. Generally the firmware＇s architecture eonsists of three parts： VRIS level, common signaling layer and user interface layer. The high layer （user interface layer） is the event flow control center of the whole radio software and the kernel part of it is effective, reliable and expandable. A FSM （finite state machine） -based control system implementation is introduced. This technology is used in the radio firmware and the result shows that it is a very effective method.