FordMsg430BusHiSpd_MDD

Module Design Document

For

FordMsg430BusHiSpd

June 19, 20158

Prepared For:

Software Engineering

Nexteer Automotive,

Saginaw, MI, USA

Prepared By:

Tata Elxsi,

Trivandrum, INDIA

Change History

Table of Contents

1 Introduction 5

1.1 Purpose 5

2 FordMsg430BusHiSpd & High-Level Description 6

3 Design details of software module 7

3.1 Graphical representation of FordMsg430BusHiSpd 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 Init: FordMsg430BusHiSpdInit1 9

5.1.1.1 Design Rationale 9

5.1.1.2 Module Outputs 9

5.1.2 Per: FordMsg430BusHiSpdPer1 9

5.1.2.1 Design Rationale 9

5.1.2.2 Store Module Inputs to Local copies 9

5.1.2.3 Processing of function) 9

5.1.2.4 Store Local copy of outputs into Module Outputs 9

5.2 Server Runnables 9

None 9

5.3 Interrupt Functions 9

5.4 Module Internal (Local) Functions 9

5.4.1 Local Function #1 9

5.4.1.1 Design Rationale 10

5.4.1.2 Processing 10

5.5 GLOBAL Function/Macro Definitions 10

6 Known Limitations with Design 11

7 UNIT TEST CONSIDERATION 12

Appendix A Abbreviations and Acronyms 13

Appendix B Glossary 14

Appendix C References 15

Introduction

Purpose

MDD for FordMsg430BusHiSpd

FordMsg430BusHiSpd & High-Level Description

Please refer FDD.

Design details of software module

Graphical representation of FordMsg430BusHiSpd

Data Flow Diagram

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

5.1.1 Init: FordMsg430BusHiSpdInit1

Design Rationale

None

Module Outputs

None

5.1.2 Per: FordMsg430BusHiSpdPer1

5.1.2.1 Design Rationale

None

5.1.2.2 Store Module Inputs to Local copies

None

5.1.2.3 Processing of function)

None

5.1.2.4 Store Local copy of outputs into Module Outputs

None

Server Runnables

None

Interrupt Functions

None

Module Internal (Local) Functions

Local Function #1

Design Rationale

Processing

Please refer to the below path in the FDD model.

MM081A_FordMsg430BusHiSpd/FordMsg430BusHiSpd/FordMsg430BusHiSpdPer1/MsgMiss/NtcFail

GLOBAL Function/Macro Definitions

None

Known Limitations with Design

1. Datatype of input variable ClrDiagcFlgProxy is uint8 in the data dictionary, but it must be Boolean according to the design in the model.

2. In the below design path,

MM081A_FordMsg430BusHiSpd/FordMsg430BusHiSpd/FordMsg430BusHiSpdPer1

The inputs to merge block are not the same corresponding to the output signal FordVehOdom.

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 Reference Model (PRM)

• Automotive SPICE® Process Assessment Model (PAM)

• ISO/IEC 15288

• ISO 26262

• IEEE Standards

• SWEBOK

• PMBOK

• Existing Nexteer Automotive documentation

References