嵌入式操作系统中消息机制的研究

The Research on the Message Mechanism in Embedded Operating System

研究了实时的抢占式的小型嵌入式操作系统中消息机制的实现.针对Task调度、Task管理、同步通信、中断管理、时间管理机能这五部分进行了研究.为保证多个相关任务在执行次序上进行协调,阐述了同步通信机制所用三种方式Event Flag、Semaphore、MailBox的实现,着重讲述的是同步通信中Mail Box的实现.实际运行后证明系统完全满足通信需要.

The realization of message mechanism in minitype embedded operating system is researched. It is divided into five parts for research ： Task dispatch, Task management, synchronous communication, interrupt management, time management function. Aiming to ensure the correspond of various relative tasks in exe- cute sequence, we elaborated with emphasis on the Event Flag, Semaphore, MailBox used in the synchronous communication mechanism, and stressing on the realization of Mail Box in synchronous communication. After running, it is proved that the system fully satisfies the need of communication.