AssiPahSum_MDD

Module Design Document

For

AssiPahSum

July 07, 2015

Prepared For:

Software Engineering

Nexteer Automotive,

Saginaw, MI, USA

Prepared By:

Nick Saxton,

Nexteer Automotive,

Saginaw, MI, USAChange History

Table of Contents

1 AssiPahSum & High-Level Description 4

2 Design details of software module 5

2.1 Graphical representation of AssiPahSum 5

2.2 Data Flow Diagram 5

2.2.1 Component level DFD 5

2.2.2 Function level DFD 5

3 Constant Data Dictionary 6

3.1 Program (fixed) Constants 6

3.1.1 Embedded Constants 6

4 Software Component Implementation 7

4.1.1 Sub-Module Functions 7

4.1.2 Interrupt Service Routines 7

4.1.3 Server Runnable Functions 7

4.1.4 Module Internal (Local) Functions 7

4.1.5 Transition Functions 7

5 Known Limitations with Design 8

6 UNIT TEST CONSIDERATION 9

Appendix A Abbreviations and Acronyms 10

Appendix B Glossary 11

Appendix C References 13

AssiPahSum & High-Level Description

This function merges command signals and is meant for use in vehicle programs that do not need the extra features of the SF034A firewall function.

Design details of software module

Graphical representation of AssiPahSum

Data Flow Diagram

Component level DFD

N/A

Function level DFD

N/A

Constant Data Dictionary

Program (fixed) Constants

Embedded Constants

Local Constants

None

Software Component Implementation

Sub-Module Functions

Initialization sub-module {_Init()}

None

Periodic sub-module {_Per()}

AssiPahSumPer1

Design Rationale

Refer to FDD

Store module inputs to local copies

Refer to FDD

(Processing of function)……

Refer to FDD

Store local copy of outputs into module outputs

Refer FDD

Interrupt Service Routines

None

Server Runnable Functions

None

Module Internal (Local) Functions

None

Transition Functions

None

Known Limitations with Design

None

UNIT TEST CONSIDERATION

None

Abbreviations and Acronyms

None

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 Reference Model (PRM)

• Automotive SPICE® Process Assessment Model (PAM)

• ISO/IEC 15288

• ISO 26262

• IEEE Standards

• SWEBOK

• PMBOK

• Existing Nexteer Automotive documentation

References