LrndRackCentr_MDD

Module Design Document

For

LrndRackCentr

October 26, 2017

Prepared By:

Matthew Leser,

Nexteer Automotive,

Saginaw, MI, USA

Change History

DescriptionAuthorVersionDate
Initial VersionML1.026-Oct-2017


Table of Contents

1 Introduction 5

1.1 Purpose 5

1.2 Scope 5

2 LrndRackCenter & High-Level Description 6

3 Design details of software module 7

3.1 Graphical representation of LrndRackCentr 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: LrndRackCentrInit1 9

5.1.1.1 Design Rationale 9

5.1.2 Per: LrndRackCentrPer1 9

5.1.2.1 Design Rationale 9

5.2 Server Runnable 9

5.3 Interrupt Functions 9

5.4 Module Internal (Local) Functions 9

5.4.1 Local Function #1 9

5.4.1.1 Description 9

5.4.2 Local Function #2 9

5.4.2.1 Description 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

Scope

LrndRackCenter & High-Level Description

Refer FDD.

Design details of software module

Graphical representation of LrndRackCentr

Data Flow Diagram

Refer FDD

Component level DFD

Refer FDD

Function level DFD

Refer FDD

Constant Data Dictionary

Program (fixed) Constants

Embedded Constants

Local Constants

Constant NameResolutionUnitsValue
Refer DataDict.m file from FDD for other constants---

Software Component Implementation

Sub-Module Functions

Init: LrndRackCentrInit1

Refer FDD Simulink model

Design Rationale

None

Per: LrndRackCentrPer1

Refer FDD Simulink Model

Design Rationale

Refer to Anomaly EA4#17201. Implementation deviates from design to fix for build.

Server Runnable

Interrupt Functions

None

Module Internal (Local) Functions

Local Function #1

Function NameManLrnRackCentrTypeMinMax
Arguments PassedHwAg_HwDeg_T_f32float32-14401440
MotVelCrf_MotRadPerSec_T_f32float32-13501350
MotTqCmd_MotNwtMtr_T_f32float32-8.88.8
Return ValueNone

Description

Implementation of ‘MANUAL LEARN RACK CENTER’ subsystem.

Local Function #2

Function NameChkRackCentrTypeMinMax
Arguments PassedHwTrvl_HwDeg_T_f32float3202880
RackCentr_HwDeg_T_f32float32-14401440
*RackCentrMotAgVld_Cnt_T_loglbooleanFALSETRUE
*RackCentrCmpl_Cnt_T_loglbooleanFALSETRUE
Return ValueNone

Description

Implementation of ‘Confirm Rack Center Found’ subsystem.

GLOBAL Function/Macro Definitions

None

Known Limitations with Design

None

UNIT TEST CONSIDERATION

Refer to Anomaly EA4#17201. Implementation deviates from design to fix for build.

Abbreviations and Acronyms

Abbreviation or AcronymDescription

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

TermDefinitionSource
MDDModule Design Document
DFDData Flow Diagram

References

Ref. #TitleVersion
1AUTOSAR Specification of Memory Mapping (Link:AUTOSAR_SWS_MemoryMapping.pdf)v1.4.0 R4.0 Rev 3
2MDD GuidelineEA4 01.00.01
3Software Naming Conventions.doc1.0
4Software Design and Coding Standards.doc2.1
5FDD – SF039A_LrndRackCentr_DesignSee Synergy Subproject verison
Last modified October 12, 2025: Initial commit (af72ad2)