【摘要】 为测试嵌入式实时操作系统μC/OS-Ⅲ的实时性,设计了基于ARM Cortex-M3内核的实验平台。该平台由波形发生模块、ARM Cortex-M3硬件模块、单片实时信号采集模块和实时操作系统采集模块4个部分构成。基于STC89C52构建波形发生模块,基于STM32设计ARM Cortex-M3硬件模块,并在STM32上开发实时信号采集模块和实时操作系统采集模块。实验表明,实时操作系统采集模块采集一次比实时信号采集模块消耗更长的时间,且消耗的时间与任务个数成线性关系。更多还原

【Abstract】 An experimental platform is designed for the research on the real-time performance of μC/OS-Ⅲwhich is applied to ARM Cortex-M3.The platform consists of four parts,those are waveform generation module,ARM Cortex-M3 hardware module,MCU real-time signal acquisition module and μC/OS-Ⅲ acquisition module.The waveform generation module is constructed based on STC89C52.And the ARM Cortex-M3 hardware module is designed based on STM32.The MCU real-time signal acquisition module and the(xC/OS-Ⅲ acquisition module are developed in STM32.The experimental results show that each acquisition by the μC/OS-Ⅲacquisition module consumes more time than that by the MCU real-time signal acquisition module,and the time-consuming is linear with the number of tasks.更多还原