Specification of Timing Extensions, AUTOSAR R22-11, CP, No.411

Specification of Timing Extensions, AUTOSAR R22-11, CP, No.411

AUTOSAR Countdown Calendar 2022

https://qiita.com/advent-calendar/2022/autosar

2022/12/04日の投稿です。

AUTOSARが、今年の版、R22-11をまもなく公開します。

RELEASE EVENT 08-December-2022

https://www.autosar.org/news-events/details/release-event-2022-dec-08/

下記は想定URLです。まだ公開していなければごめんなさい。

https://www.autosar.org/fileadmin/standards/classic/22-11/AUTOSAR_TPS_TimingExtensions.pdf

文書は検索してダウンロードできます。

https://www.autosar.org/nc/document-search/

AUTOSAR R22-11記事一覧はこちら。

https://qiita.com/kaizen_nagoya/items/11a1654e1e9ec0e4d001

 <この項は書きかけです。順次追記します。>

## 用語(terms)
|Term|Meaning\
|:--|:--|
|BSW |Basic Software
|CAN| Controller Area Network
|CC| Communication Controller
|COM |Communication module
|ECU |Electrical Control Unit
|ID| Identifier
|IPDU| Interaction Layer Protocol Data Unit
|I/O| Input/Output
|ISIGNAL| Interaction Layer Signal
|LPDU |Data Link Layer Protocol Data Unit
|PDU |Protocol Data Unit
|RTE |Runtime Environment
|SW-C |Software Component
|TD| Timing Description
|UML |Unified Modeling Language
|VFB |Virtual Functional Bus
|Jitter| For a periodically occurring timing event, the jitter is defined as the maximum variation of its period with respect to a predefined standard period.
|Latency |The latency of a timing event chain describes the time duration between the occurrence of the stimulus and the occurrence of the corresponding response.
|Maximum interarrival time|Describes the maximum time interval between two consecutive event occurrences. In the more general case, this attribute is an array of the maximum latency between two, three, four, ... event occurrences.
|Minimum interarrival time |Describes the minimum time interval between two consecutive event occurrences. In the more general case, this attribute is an array of the minimum latency between two, three, four, ... event occurrences.
|Period| Describes the expected time interval between two consecutive event occurrences, neglecting variation (jitter).
|Response |End point of an event chain.
|Synchronization |Synchronization focuses on the occurrence of different timing events. Synchronization of timing events means that they shall occur simultaneously within a certain tolerance interval.
|Stimulus |Start point of an event chain.
|Timing analysis |Timing analysis is a method of determining the timing behavior of the system. This includes consideration of timing relevant system behavior like task preemptions, interrupt handling, resource blocking, etc.
|Timing constraint |A timing constraint may have two different interpretation alternatives. On the one hand, it may define a restriction for the timing behavior of the system (e.g. minimum (maximum) latency bound for a certain event sequence). In this case, a timing constraint is a requirement which the system shall fulfill. On the other hand, a timing constraint may define a guarantee for the timing behavior of the system. In this case, the system developer guarantees that the system has a certain behavior with respect to timing (e.g. a timing event is guaranteed to occur periodically with a certain maximum variation).
|Timing description |The timing description of a system, subsystem, software component or BSW consists of events and event chains. The former one describes events that can be observed and the latter one describe their causal relationship.
|Timing event| A timing event is the abstract representation of a specific system behavior – that can be observed at runtime – in the AUTOSAR specification. Timing events are used to define the scope for timing constraints. Depending on the specific scope, the view on the system, and the level of abstraction different types of events are defined.
|Timing event chain |A timing event chain describes the causal order for a set of functionally dependent timing events. Each event chain has a well defined stimulus and response, which describe its start and end point. Furthermore, it can be hierarchically decomposed into an arbitrary number of sub-chains, so called ”event chain segments”.
|Timing event occurrence |A timing event is said to ”occur”, when a specific system behavior – represented by the timing event – can be observed. For example the timing event ”RunnableEntityStarted” occurs, when the associated RunnableEntity has entered the state ”started” after its activation.
|Timing guarantee |see glossary entry for ”Timing constraint”.
|Timing information| Superordinate concept for timing properties and timing constraints.
|Timing path| A timing path defines a sequence of communication or computation activities of the system, whose timing behavior shall be examined. Timing paths can be expressed by event chains.
|Timing property |A timing property defines the state or value of a timing relevant aspect within the system (e.g. the execution time bounds for a RunnableEntity or the priority of a task). Thus, a property does not represent a constraint for the system, but a somehow gathered (e.g. measured, estimated or determined) or defined attribute of the system.
|Timing requirement |A timing requirement defines a restriction on timing that shall be fulfilled to ensure proper operation of the system. Timing requirements can be expressed by using timing constraints.
|Timing validation| Timing validation compares the result of timing analysis (see glossary entry for timing analysis) with the expected behavior defined by timing constraints (see glossary entry for timing constraints).



## 英日
日本語は仮訳

T.B.D.

## 参考(reference)

Glossary も　参考に入れましょう。
https://www.autosar.org/fileadmin/standards/foundation/22-11/AUTOSAR_TR_Glossary.pdf

[1] Methodology for Classic Platform
AUTOSAR_TR_Methodology
[2] Requirements on Timing Extensions
AUTOSAR_RS_TimingExtensions
[3] Virtual Functional Bus
AUTOSAR_EXP_VFB
[4] Standardization Template
AUTOSAR_TPS_StandardizationTemplate
[5] Generic Structure Template
AUTOSAR_TPS_GenericStructureTemplate
[6] System Template
AUTOSAR_TPS_SystemTemplate
[7] Basic Software Module Description Template
AUTOSAR_TPS_BSWModuleDescriptionTemplate


# Countdown Calendar 2022

今年企画した6つのCountdown Calendarと、それぞれの記事一つをご紹介します。

AUTOSAR Countdown Calendar 2022

https://qiita.com/advent-calendar/2022/autosar

AUTOSAR References to ISO, IEC, ITU, IEEE, RFC and SEA etc.

https://qiita.com/kaizen_nagoya/items/d7d252211e10a79516df

Automotive Handbook Countdown Calendar 2022

https://qiita.com/advent-calendar/2022/automotivehandbook

Basic principles, ボッシュ自動車handbook(英語)11版まとめ<2>

https://qiita.com/kaizen_nagoya/items/24a1ba5da3d09b2a95d1


2022 いいねをいただいた記事ランキング(O.K.版) Countdown Calendar 2022

https://qiita.com/advent-calendar/2022/goods

2022年１月下旬　いいねをいただいた記事　16

https://qiita.com/kaizen_nagoya/items/0ee589a8edaeab24fd2a

CDCale(O.K.) Countdown Calendar 2022

https://qiita.com/advent-calendar/2022/adventcalendar2022

「会議は15分未満」に。小耳にはさんだ話。

https://qiita.com/kaizen_nagoya/items/510c47c5d1e8d03145db

ABC language (O.K.版） Advent Calendar 2022

https://qiita.com/advent-calendar/2022/abc_ok

LLVMソースコードのコンパイルをしようと思ってハマった罠とそこから脱出するための努力

https://qiita.com/kaizen_nagoya/items/16f270e42b947756ced3

ABC maker(O.K版） Advent Calendar 2022

https://qiita.com/advent-calendar/2022/abcmaker

JAXA/IPA クリティカルソフトウェアワークショップ WOCS言語関連発表(改定版)

https://qiita.com/kaizen_nagoya/items/4789832baf494cb74626


CountdownCalendar2022 報告

https://qiita.com/kaizen_nagoya/items/5b4b99cb9ad571f4094b


# 関連文書(Related document)

2023年1月　記事数一覧

https://qiita.com/kaizen_nagoya/items/78153968c5de76a7fd83

年末100記事を30点に仕上げる。

https://qiita.com/kaizen_nagoya/items/3ffdc82caee3a325d1d7

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https://qiita.com/kaizen_nagoya/items/d494737e2627127b530d

「はじめてのCAN/CANFD 」 ベクタージャパン ＜エンジニア夏休み企画>【読書感想文】

https://qiita.com/kaizen_nagoya/items/1fee270be00ef90ca4ec


三方良し　Udemy 車載LAN入門講座 CAN通信編

https://qiita.com/kaizen_nagoya/items/bed038c52510fea72c0a


詳解 車載ネットワーク CAN, CAN FD, LIN, CXPI, Ethernetの仕組みと設計のために(1) 著者　 ＜エンジニア夏休み企画 読書感想文＞

https://qiita.com/kaizen_nagoya/items/e9971698a108c3dba794

詳解 車載ネットワーク CAN, CAN FD, LIN, CXPI, Ethernetの仕組みと設計のために(2)参考文献 ＜エンジニア夏休み企画>【読書感想文】

https://qiita.com/kaizen_nagoya/items/e156cbdd5fce9263776e

詳解 車載ネットワーク CAN、CAN FD、LIN、CXPI、Ethernetの仕組みと設計のために

https://qiita.com/kaizen_nagoya/items/44a9e6b0f5363b4a5b35

AUTOSAR Abstract Platform User Group Weekly Report(1) 2022.1.8

https://qiita.com/kaizen_nagoya/items/fece4f7719ef55d612bf

AUTOSAR Abstract Platform User Group Weekly Report(2) 2022.1.15

https://qiita.com/kaizen_nagoya/items/6f1168a36e795976a906

# 更新資料　Abstract Platform, Vehicle Modelへの対応版
Specification of Timing Extensions, No.411, CP, AUTOSAR R22-11(2)

https://qiita.com/kaizen_nagoya/items/4e34b362953ecb25b98e
 ＜この記事は個人の過去の経験に基づく個人の感想です。現在所属する組織、業務とは関係がありません。＞


# 文書履歴(document history)
ver. 0.01 初稿 　20221204
ver. 0.02 URL追記　20230122