BmwVehSpd_MDD

Module Design Document

For

BmwVehSpd

June 22, 2018

Prepared By:

Marek Brykczyński,

Nexteer Automotive,

Tychy, Poland
Change History

Table of Contents

1 Introduction 5

1.1 Purpose 5

1.2 Scope 5

2 BmwVehSpd High-Level Description 6

3 Design details of software module 7

3.1 Graphical representation of BmwVehSpd 7

3.2 Data Flow Diagram 7

3.2.1 Component level DFD 7

3.2.2 Function level DFD 7

4 Constant Data Dictionary 8

4.1 Program (fixed) Constants 8

4.1.1 Embedded Constants 8

5 Software Component Implementation 9

5.1 Sub-Module Functions 9

5.1.1 BmwVehSpdInit1 9

5.1.1.1 Design Rationale 9

5.1.1.2 Module Outputs 9

5.1.2 BmwVehSpdPer1 9

5.1.2.1 Design Rationale 9

5.1.2.2 Module Outputs 9

5.2 Server Runnables 9

5.3 Interrupt Functions 9

5.3.1 Interrupt Function Name 9

5.4 Module Internal (Local) Functions 9

5.4.1 Cntr 9

5.4.2 VehSpdVldCalcn 10

5.4.3 VehSpdRateLim 10

5.4.4 ProcessSecondAndGateState 10

5.4.5 ProcessThirdAndGateState 10

5.4.6 ProcessSixthAndGateState 10

5.4.7 ProcessFourthAndGateState 11

5.4.8 ProcessThridConditionOfOrGate 11

5.5 GLOBAL Function/Macro Definitions 11

6 Known Limitations with Design 12

7 UNIT TEST CONSIDERATION 13

Appendix A Abbreviations and Acronyms 14

Appendix B Glossary 15

Appendix C Please references 16

Introduction

Purpose

Module Design Document for CF080A_BmwVehSpd_Impl

Scope

The following definitions are used throughout this document:

• Shall: indicates a mandatory requirement without exception in compliance.

• Should: indicates a mandatory requirement; exceptions allowed only with documented justification.

• May: indicates an optional action.

BmwVehSpd High-Level Description

The BmwVehSpd software component is responsible for determining the Vehicle Speed.

Design details of software module

Please refer FDD

Graphical representation of BmwVehSpd

Data Flow Diagram

Please refer FDD

Component level DFD

Please refer FDD

Function level DFD

Please refer FDD

Constant Data Dictionary

Program (fixed) Constants

Embedded Constants

Local Constants

Software Component Implementation

Sub-Module Functions

BmwVehSpdInit1

Design Rationale

Please refer FDD

Module Outputs

None

BmwVehSpdPer1

Design Rationale

Please refer FDD.

Module Outputs

None

Server Runnables

None

Interrupt Functions

None

Interrupt Function Name

None

Module Internal (Local) Functions

Cntr

VehSpdVldCalcn

VehSpdRateLim

ProcessSecondAndGateState

ProcessThirdAndGateState

ProcessSixthAndGateState

ProcessFourthAndGateState

ProcessThridConditionOfOrGate

GLOBAL Function/Macro Definitions

None

Known Limitations with Design

None.

UNIT TEST CONSIDERATION

None

Abbreviations and Acronyms

Glossary

Note: Terms and definitions from the source “Nexteer Automotive” take precedence over all other definitions of the same term. Terms and definitions from the source “Nexteer Automotive” are formulated from multiple sources, including the following:

• ISO 9000

• ISO/IEC 12207

• ISO/IEC 15504

• Automotive SPICE® Process Please reference Model (PRM)

• Automotive SPICE® Process Assessment Model (PAM)

• ISO/IEC 15288

• ISO 26262

• IEEE Standards

• SWEBOK

• PMBOK

• Existing Nexteer Automotive documentation

Please references