Abstract
OSEK/VDX는 자동차 ECU를 위한 산업계 표준을 제시하고자 구성된 공동 프로젝트이며 OSEK OS는 OSEK/VDX에서 제안한 사양을 준수하는 실시간 운영체제이다. 본 논문에서는 ARM 프로세서를 기반으로 한 OSEK OS의 태스크 전환 및 인터럽트 핸들링 메커니즘 구현을 제시한다. OSEK OS의 요구사항과 ARM 프로세서의 특성을 고려하여 태스크 전환 및 인터럽트 핸들링 메커니즘을 설계하였다. 제시한 메커니즘의 타당성을 검토하기 위하여 ARM 프로세서가 탑재된 실험용 임베디드 보드에서 기능적 정확성을 확인하고 태스크 전환과 인터럽트 핸들링에 소요되는 시간을 측정하였다. OSEK/VDX is a joint project aiming at an industry standard for ECUs in vehicles and OSEK OS is a real-time operating system that meets OSEK/VDX specifications. In this paper, we suggest an implementation of task switching and interrupt handling mechanisms of OSEK operating system based on ARM processors. Considering the requirements of OSEK OS and characteristics of ARM processor, we have designed task switching and interrupt handling mechanisms. For evaluating the validation of the suggested mechanisms, we have checked the functional correctness on an experimental embedded board with ARM processor and calculated the time of task switching and interrupt handling.
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