BmwTunSetHndlr_MDD

Module Design Document

For

BmwTunSetHndlr

May 17, 2018

Prepared For:

Software Engineering

Nexteer Automotive,

Saginaw, MI, USA

Prepared By:

Software Group,

Nexteer Automotive,

Saginaw, MI, USA
Change History

Table of Contents

1 Introduction 4

1.1 Purpose 4

1.2 Scope 4

2 BmwTunSetHndlr & High-Level Description 5

3 Design details of software module 6

3.1 Graphical representation of BmwTunSetHndlr 6

3.2 Data Flow Diagram 6

3.2.1 Component level DFD 6

3.2.2 Function level DFD 6

4 Constant Data Dictionary 7

4.1 Program (fixed) Constants 7

4.1.1 Embedded Constants 7

5 Software Component Implementation 8

5.1 Sub-Module Functions 8

5.1.1 Init: BmwTunSetHndlrInit1 8

5.1.2 Per: BmwTunSetHndlrPer1 8

5.2 Server Runables 9

5.2.1 TunVrntRead_Oper 9

5.2.2 TunVrntWr_Oper 9

5.2.3 MotVrntRead_Oper 9

5.2.4 MotVrntWr_Oper 9

5.3 Interrupt Functions 10

5.4 Module Internal (Local) Functions 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

Module Design Document for CF081A_BmwTunSetHndlr_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.

BmwTunSetHndlr & High-Level Description

The BMW Tuning Set Handler provides a desired Runtime Index of an integer type. As the input, the function receives the desired Runtime Index. If a received value is valid then the function maps it to one of three defined values. If the proper calibration is set then the function allows overriding the output to a calibratable value. The function provides two server runnables in order to write to and to read from the NVM. During the initialization, it evaluates if the NVM is valid, if the NVM is detected invalid then it stores a predefined constant.

Design details of software module

Graphical representation of BmwTunSetHndlr

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

Refer FDD for local constants.

Software Component Implementation

Sub-Module Functions

The sub-module functions are grouped based on similar functionality that needs to be executed in a given “State” of the system (refer States and Modes). For a given module, the MDD will identify the type and number of sub-modules required. The sub-module types are described below.

Init: BmwTunSetHndlrInit1

Design Rationale

Refer FDD

Module Outputs

Refer FDD

Per: BmwTunSetHndlrPer1

Design Rationale

Refer FDD

Store Module Inputs to Local copies

Refer FDD

(Processing of function)………

Refer FDD

Store Local copy of outputs into Module Outputs

Refer FDD

Server Runables

TunVrntRead_Oper

Design Rationale

Refer FDD

(Processing of function)………

Refer FDD

TunVrntWr_Oper

Design Rationale

Refer FDD

(Processing of function)………

Refer FDD

MotVrntRead_Oper

Design Rationale

Refer FDD

(Processing of function)………

Refer FDD

MotVrntWr_Oper

Design Rationale

Refer FDD

(Processing of function)………

Refer FDD

Interrupt Functions

None

Module Internal (Local) Functions

None

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