摘要
RTOS是嵌入式系统中重要的组成部分,但其本身的运行使整个系统的性能下降。针对RTOS的任务调度和时间延时处理部分进行分析,并加以硬件实现。在运行63个任务时,采用硬件加速模块,任务响应时间为2180个时钟周期。相比没有硬件支持的系统,任务响应时间可降低85.8%,提高了系统的可预测性。
RTOS is an important part of embedded system, but it will degrade the performance of the system when running. In this paper, the task schedule and time delay functions in RTOS have been analysised and redesigned by hardware. Under running 63 tasks with hardware accelerator, the task response time is 2 180 clock cycles. Compared to running pure software, the task re- sponse time can be reduced by 85.8%, the predictability of the system has been improved.
出处
《微型机与应用》
2010年第6期17-19,共3页
Microcomputer & Its Applications
基金
青岛市科技计划资助项目(07-2-3-1-jch)
