Embedded System용 실시간 운영체제 설계 및 구현 = Design and Implementation of Real Time Operating System for Embedded System

다국어 초록 (Multilingual Abstract)

This paper deals with design and implementation of real time operating System for embedded system. Real time system is characterized by the severe consequences that result if logical as well as timing correctness properties of the system are not met real time operating system cover a wide range, but most real time operating are embedded. This means that the computer is built into a system and is not seen by the user as being a computer. On Real-time System, Real time operating system allows real-time applications to be designed and expanded easily; functions can be added without requiring major changes to the software. I design Real time operating system for preemptive kernel. and design kernel component such as Semaphore, Message Mail box, Message Queue, Timer, ISR mechanism has low interrupt latency.

목차 (Table of Contents)

• 목차
• 1. 서론 = 1
• 2. 관련 연구 = 3
• 2.1 실시간 운영체제 = 3
• 2.2 상용 실시간 운영체제 = 5
• 3. 실시간 운영체제 구현 = 8
• 3.1 KERNEL 구조 및 Scheduler 구현 = 8
• 3.1.1 임계영역(Critical Section) = 8
• 3.1.2 Task 구조 = 9
• 3.1.3 Task Status = 13
• 3.1.4 Task 생성 = 15
• 3.1.5 Task 소멸 = 16
• 3.1.6 Scheduler 구현 = 16
• 3.2 Inter Task Communication = 22
• 3.2.1 Event Control Block 구조 = 23
• 3.2.2 Semaphore 구현 = 24
• 3.2.3 Mail Boxes 구현 = 26
• 3.2.4 Queues 구현 = 28
• 3.3 Memory Management = 29
• 3.3.1 Pool Control Block 구조 = 30
• 3.3.2 Memory Control Block 구조 = 31
• 3.3.3 Memory Management 구현 = 32
• 3.4 Timer = 37
• 3.4.1 Timer 구조 = 37
• 3.4.2 Timer 구현 = 39
• 3.5 I/O Interface = 40
• 3.5.1 I/O Interface 설계 및 구현 = 42
• 3.6 Interrupt Handling = 43
• 3.6.1 HISR/LISR 구현 = 46
• 4. 테스트 환경 = 52
• 5. 결론 및 향후 연구 과제 = 55