HwAgTrakgServo_MDD

Module Design Document

For

HwAgTrakgServo

Dec 18, 2015

Prepared For:

Software Engineering

Nexteer Automotive,

Saginaw, MI, USA

Prepared By:

Kannappa Chidambaram (Tata Elxsi),

Trivandrum, INDIA.

Change History

Table of Contents

1 Introduction 5

1.1 Purpose 5

1.2 Scope 5

2 HwAgTrakgServo & High-Level Description 6

3 Design details of software module 7

3.1 Graphical representation of HwAgTrakgServo 7

3.2 Data Flow Diagram 7

3.2.1 Component level DFD 7

3.2.2 Function level DFD 8

4 Constant Data Dictionary 9

4.1 Program (fixed) Constants 9

4.1.1 Embedded Constants 9

5 Software Component Implementation 10

5.1 Sub-Module Functions 10

5.1.1 Init: HwAgTrakgServoInit1 10

5.1.1.1 Design Rationale 10

5.1.1.2 Module Outputs 10

5.1.2 Per: HwAgTrakgServoPer1 10

5.1.2.1 Design Rationale 10

5.1.2.2 Store Module Inputs to Local copies 10

5.1.2.3 (Processing of function)……… 10

5.1.2.4 Store Local copy of outputs into Module Outputs 10

5.2 Server Runables 10

5.3 Interrupt Functions 10

5.4 Module Internal (Local) Functions 10

5.4.1 Local Function #1 10

5.4.1.1 Design Rationale 11

5.4.1.2 Processing 11

5.4.2 Local Function #2 11

5.4.2.1 Design Rationale 11

5.4.2.2 Processing 11

5.4.3 Local Function #3 11

5.4.3.1 Design Rationale 11

5.4.3.2 Processing 11

5.4.4 Local Function #4 11

5.4.4.1 Design Rationale 12

5.4.4.2 Processing 12

5.5 GLOBAL Function/Macro Definitions 12

6 Known Limitations with Design 13

7 UNIT TEST CONSIDERATION 14

Appendix A Abbreviations and Acronyms 15

Appendix B Glossary 16

Appendix C References 17

Introduction

Purpose

MDD for Handwheel Angle Tracking Servo.

HwAgTrakgServo & High-Level Description

Please refer FDD

Design details of software module

Graphical representation of HwAgTrakgServo

Data Flow Diagram

Please refer FDD

Component level DFD

Function level DFD

Constant Data Dictionary

Program (fixed) Constants

Embedded Constants

Local Constants

Software Component Implementation

Sub-Module Functions

Init: HwAgTrakgServoInit1

Design Rationale

None

Module Outputs

None

Per: HwAgTrakgServoPer1

Design Rationale

None

Store Module Inputs to Local copies

None

(Processing of function)………

Please refer FDD

Store Local copy of outputs into Module Outputs

Please refer FDD

Server Runables

None

Interrupt Functions

None

Module Internal (Local) Functions

Local Function #1

Design Rationale

NA

Processing

Please refer FilterDesiredAngle block of the FDD.

(Path : SF020A_HwAgTrakgServo/HwAgTrakgServo/HwAgTrakgServoPer1/FilterDesiredAngle)

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 Reference Model (PRM)

• Automotive SPICE® Process Assessment Model (PAM)

• ISO/IEC 15288

• ISO 26262

• IEEE Standards

• SWEBOK

• PMBOK

• Existing Nexteer Automotive documentation

References