摘要： 根据OSEK OS规范，对实时操作系统uC/OSII的任务调度策略进行改进。提出一种符合OSEK OS规范的任务管理机制，修改uC/OSII的优先级判定方法，以使数值0代表优先级最低，数值越大优先级越高。测试结果表明，修改uC/OSII后的操作系统支持同优先级多任务，同优先级队列中的任务按FIFO顺序调度。

关键词: OSEK操作系统, 实时操作系统, 任务管理, 优先级

Abstract: The task schedule strategy of the realtime operating system uC/OSII is improved according to the Open Systems and Corresponding Interfaces for Automotive Electronics(OSEK) OS specification. The determinant method of priority is modified to make a larger number represent a higher priority with number 0 as the lowest priority of task. And a mechanism of task management meeting the requirement of OSEK OS specification is put forward. The modified operating system supports multiple tasks within a same level of priority, which are scheduled in FIFO（First In First Out） order.

Key words: Open Systems and Corresponding Interfaces for Automotive Electronics(OSEK) operating system, real time operating system, task management, priority

中图分类号: 

• TP311.12