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손정호,Son, Jeongho 대한임베디드공학회 2010 대한임베디드공학회논문지 Vol.5 No.1
In real-time embedded systems, the responsibility is the most important thing because it is related to human life. Context switching is a part of which can slow down the responsibility. We therefore should minimize the amount of state that needs to be saved during context switching. In this paper, we introduce a new architecture (Register Farm) for context switching which can exchange two contexts in one cycle time. Although it might increase the cost of MCU design and the complexity of circuit, it cannot miss any interrupt during context switching. Consequently, Register Farm architecture can make embedded systems spread out in human life because it can increase reliability and responsibility in real time embedded systems.
손정호(Jeongho Son),이은령(Eunryung Lee),김재영(Jaeyoung Kim) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Recently, the automobile is necessary for human life, which can improve the quality and performance of human life with speed and convenient functionalities. The automobile is equipped with safety functions, infotainment functions, and mobility functions as assistant of human. In this paper, we introduce AUTOSAR standard platform and basic functionality to operate the automobiles. Especially, we focused on timer manipulation for requirements of AUTOSAR OS standard. AUTOSAR platform requires that the software free running timer(SWFRT) concept which can support multiple counters and operation based on cascading structure to extend the HW timer’s range and the number of HW timers. We used linked list mechanism to implement the SWFRT which can ensure that our implementation can satisfy all requirements of AUTOSAR platform.
Qplus-Auto : AUTOSAR 기반 차량 전장용 운영체제
이은령(Eunryung Lee),손정호(Jeongho Son),김재영(Jaeyoung, Kim) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
It is essential to employ a standardized software platform to overcome the increasing complexity of automotive software. AUTOSAR is an open and standardized automotive software architecture, jointly developed by European automobile manufacturers, suppliers and tool developers. It provides Modularity and configurability, Standardized interfaces and Runtime Environment. In this paper, we describes the implementation of Qplus-Auto AUTOSAR Edition, which is the operating system based on AUTOSAR standard for automobiles. We used linked list mechanism to implement ready queue. We can ensure that our implementation can satisfy all requirements of AUTOSAR OS by application.
이진(Jin Lee),손정호(Jeongho Son),송지석(Jiseok Song) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11
This paper proposes a network-oriented software architecture design using Odin Studio, which is an AUTOSAR tool implementing AUTOSAR methodology, for AUTOSAR application developers. Domestic OEM provides network design data which specify inter-ECU communication to suppliers without software architecture. However, on supplier’s side, software architecture is necessary for designing software components. In this paper, we introduce three steps of designing software architecture from imported DBC data file. Odin supports overall steps of the design by creating elements and configuring them automatically. Using this network-oriented software architecture, AUTOSAR application developers can reduce their configuration errors and implement their application effectively.
오픈소스를 활용한 AUTOSAR 플랫폼 변환기 및 ECU 자동설정 생성기 개발
송지석(Jiseok Song),손정호(Jeongho Son),이진(Jin Lee) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11
AUTOSAR methodology requires intensive support of tooling because of its complexity and large amount of configuration items and requirements on converting file formats such as DBC, LDF and FIBEX. In this paper we introduce a tool to convert and auto-configure AUTOSAR data and its detailed design concept which is based on the open environment including Eclipse, EMF, ANTLR and ARTOP. For importing other file formats into AUTOSAR data, we incorporated existing open-source technologies which can improve portability and reduces development, maintenance effort. For ECU configuration generation from systems configuration, we designed a framework on top of the ARTOP SDK to hide lower details which can support preserving previous user configured data ensuring incremental automation. With these features, it can provide quick support for customer needs and enables toward fullyautomated configuration of ECU.