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AUTOSAR开发体系 VFB实现上层应用软件之间的连接与通讯 并为应用软件在ECU的映射打下基础
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Specification of the Virtual Functional Bus
V1.3.0
R3.2 Rev 2
1 of 77 Document ID 056: AUTOSAR_SWS_VFB
- AUTOSAR Confidential -
Document Title
Specification of the Virtual
Functional Bus
Document Owner
AUTOSAR
Document Responsibility
AUTOSAR
Document Identification No
056
Document Classification
Auxiliary
Document Version
1.3.0
Document Status
Final
Part of Release
3.2
Revision
2
Document Change History
Date
Version
Changed by
Change Description
17.05.2012
1.3.0
AUTOSAR
Administration
Support of NV data communication
at element level
18.03.2011
1.2.0
AUTOSAR
Administration
Legal Disclaimer Revised
Added description of categories of
runnables
14.07.2010
1.1.0
AUTOSAR
Administration
Last-is-best N:1 S/R communication
allowed
23.06.2008
1.0.1
AUTOSAR
Administration
Legal Disclaimer Revised
14.11.2007
1.0.0
AUTOSAR
Administration
Initial Release
Specification of the Virtual Functional Bus
V1.3.0
R3.2 Rev 2
2 of 77 Document ID 056: AUTOSAR_SWS_VFB
- AUTOSAR Confidential -
Disclaimer
This specification and the material contained in it, as released by AUTOSAR is for
the purpose of information only. AUTOSAR and the companies that have contributed
to it shall not be liable for any use of the specification.
The material contained in this specification is protected by copyright and other types
of Intellectual Property Rights. The commercial exploitation of the material contained
in this specification requires a license to such Intellectual Property Rights.
This specification may be utilized or reproduced without any modification, in any form
or by any means, for informational purposes only.
For any other purpose, no part of the specification may be utilized or reproduced, in
any form or by any means, without permission in writing from the publisher.
The AUTOSAR specifications have been developed for automotive applications only.
They have neither been developed, nor tested for non-automotive applications.
The word AUTOSAR and the AUTOSAR logo are registered trademarks.
Advice for users
AUTOSAR Specification Documents may contain exemplary items (exemplary
reference models, "use cases", and/or references to exemplary technical solutions,
devices, processes or software).
Any such exemplary items are contained in the Specification Documents for
illustration purposes only, and they themselves are not part of the AUTOSAR
Standard. Neither their presence in such Specification Documents, nor any later
documentation of AUTOSAR conformance of products actually implementing such
exemplary items, imply that intellectual property rights covering such exemplary items
are licensed under the same rules as applicable to the AUTOSAR Standard.
Specification of the Virtual Functional Bus
V1.3.0
R3.2 Rev 2
3 of 77 Document ID 056: AUTOSAR_SWS_VFB
- AUTOSAR Confidential -
Table of Content
1 Introduction to this document .............................................................................. 5
1.1 Contents ....................................................................................................... 5
1.2 Prereads ....................................................................................................... 5
1.3 Relationship to other AUTOSAR specifications ............................................ 5
1.4 Structure and conventions of this document ................................................ 6
1.4.1 Structure of this document .................................................................... 6
1.4.2 Specification Items ................................................................................ 7
2 The Virtual Functional Bus .................................................................................. 8
3 Overall mechanisms and concepts .................................................................... 11
3.1 Components ............................................................................................... 11
3.2 Port-Interfaces ............................................................................................ 13
3.3 Ports ........................................................................................................... 14
3.4 Connectors ................................................................................................. 18
3.5 Compositions versus atomic components .................................................. 20
3.6 Relationship between the VFB and the ECU Software Architecture .......... 22
3.7 Kinds of components .................................................................................. 24
3.8 Resources for components and “runnables” .............................................. 26
3.8.1 Background ......................................................................................... 26
3.8.2 The “runnable” concept ....................................................................... 27
3.8.3 The implementation of a component and the role of the RTE ............. 29
3.8.4 Categories of Runnables ..................................................................... 29
4 Communication on the VFB ............................................................................... 31
4.1 Introduction ................................................................................................ 31
4.2 Error types .................................................................................................. 31
4.3 Sender-Receiver communication ............................................................... 31
4.3.1 From the point of view of the sender ................................................... 32
4.3.2 From the point of view of the receiver ................................................. 34
4.3.3 Multiplicity of sender-receiver .............................................................. 38
4.3.4 Filtering between the sender and the receiver .................................... 40
4.3.5 Concurrency and ordering within a sender-receiver connector ........... 40
4.4 Client-Server communication ..................................................................... 41
4.4.1 From the point of view of the client ...................................................... 44
4.4.2 From the point of view of the server .................................................... 45
4.4.3 Multiplicity of client-server ................................................................... 46
4.4.4 Ordering and concurrency within a client-server connector ................ 46
4.5 Remarks regarding the identification of communication partners ............... 47
5 Timing-model for the VFB (For information only - not part of the Standard) .... 49
5.1 Generic timing framework .......................................................................... 49
5.1.1 Event and EventOccurrence ............................................................... 49
5.1.2 Event Models ...................................................................................... 50
5.1.3 Timing Chains ..................................................................................... 52
5.1.4 Timing Chain Models .......................................................................... 53
5.2 Timing aspects of sender-receiver communication .................................... 54
5.2.1 Definition of the events ........................................................................ 54
5.2.2 The sender-receiver timing chain ........................................................ 54
5.2.3 Application of the timing framework to sender-receiver ....................... 55
5.3 Timing attributes for client-server communication ...................................... 56
5.3.1 Definition of the events ........................................................................ 56
Specification of the Virtual Functional Bus
V1.3.0
R3.2 Rev 2
4 of 77 Document ID 056: AUTOSAR_SWS_VFB
- AUTOSAR Confidential -
5.3.2 The client-server timing chain ............................................................. 57
5.3.3 Application of the timing framework to client-server communication ... 58
6 Interaction with hardware .................................................................................. 59
6.1 Introduction ................................................................................................ 59
6.2 Microcontroller Abstraction Layer (MCAL) .................................................. 60
6.3 ECU Abstraction ......................................................................................... 61
6.4 Sensor-Actuator Software Component ....................................................... 61
6.5 Complex Device Driver Component ........................................................... 61
7 AUTOSAR Services .......................................................................................... 63
7.1 Introduction ................................................................................................ 63
7.2 VFB Representation ................................................................................... 63
7.2.1 Selection of a communication mechanism .......................................... 64
7.2.2 Location of a Service ........................................................................... 64
7.2.3 Platform dependent types ................................................................... 64
7.2.4 Configuration ....................................................................................... 65
7.3 List of Services ........................................................................................... 65
8 Mode Management ........................................................................................... 66
8.1 Introduction ................................................................................................ 66
8.2 Defining modes .......................................................................................... 66
8.3 Communicating modes ............................................................................... 67
8.4 Mode-managers: components that control modes ..................................... 68
8.5 Components that depend on modes .......................................................... 68
9 Measurement and Calibration ........................................................................... 70
9.1 Calibration .................................................................................................. 70
9.1.1 Port-based calibration ......................................................................... 70
9.1.2 Private calibration ................................................................................ 73
9.2 Measurement ............................................................................................. 73
10 Interaction with Non-AUTOSAR-ECUs .......................................................... 74
10.1 Introduction ................................................................................................ 74
10.2 Problems of interaction ............................................................................... 74
10.3 Description of interaction ............................................................................ 75
11 References .................................................................................................... 77
Specification of the Virtual Functional Bus
V1.3.0
R3.2 Rev 2
5 of 77 Document ID 056: AUTOSAR_SWS_VFB
- AUTOSAR Confidential -
1 Introduction to this document
1.1 Contents
This specification describes the AUTOSAR Virtual Functional Bus (VFB).
1.2 Prereads
This document is one of the high-level conceptual documents of AUTOSAR.
The only required pre-read is [AUTOSAR Technical Overview]. Useful pre-reads are
[Main Requirements] and [AUTOSAR Methodology]. Documents that can be
consulted in parallel to this document include the glossary [AUTOSAR Glossary].
1.3 Relationship to other AUTOSAR specifications
AUTOSAR
Methodology
Glossary
AUTOSAR
Main Requirements
List of BSW Modules
Technical
Overview
AUTOSAR
Layered Software
Architecture
Software-Component
Template
Specification
of
Graphical
Notation
Specification of
RTE
Specification of the
Virtual Functional Bus
BSW SWS
BSW SWS
BSW SWS
Conceptual specifications
Metamodel and Template
Specifications
RTE and BSW Specifications
Figure 1.1: Relationship of the “Specification of the Virtual Functional Bus” to
other specifications
Figure 1.1 illustrates the relationship between the “Specification of the Virtual
Functional Bus” and other major AUTOSAR specifications. The “Specification of the
Virtual Functional Bus” is part of a set of specifications describing the overall
concepts of AUTOSAR. These documents give a conceptual overview of AUTOSAR
and serve as requirements to the more detailed specifications. The conceptual
specifications include:
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