CDD_NxtrTi_MDD

Module Design Document

For

CDD_NxtrTi

Aug 23, 2017

Prepared For:

Software Engineering

Nexteer Automotive,

Saginaw, MI, USA

Prepared By:

Shawn Penning,

Nexteer Automotive,

Saginaw, MI, USA
Change History

Table of Contents1 Introduction 5

1.1 Purpose 5

1.2 Scope 5

2 CDD_NxtrTi & High-Level Description 6

3 Design details of software module 7

3.1 Graphical representation of CDD_NxtrTi 7

3.2 Data Flow Diagram 7

Component level DFD 7

Function level DFD 7

4 Constant Data Dictionary 8

4.1 Program (fixed) Constants 8

Embedded Constants 8

5 Software Component Implementation 9

5.1 Sub-Module Functions 9

5.1.1 Init: NxtrTiInit1 9

5.1.1.1 Design Rationale 9

5.1.1.2 Store Module Inputs to Local copies 9

5.1.1.3 (Processing of function)……… 9

5.1.1.4 Module Outputs 9

5.1.2 NxtrTiInit0 9

5.1.3 Per: NxtrTiPer1 9

5.1.3.1 Design Rationale 9

5.1.3.2 Store Module Inputs to Local copies 9

5.1.3.3 (Processing of function)……… 9

5.1.3.4 Store Local copy of outputs into Module Outputs 10

5.2 Server Runnables 10

5.2.1 GetRefTmr100MicroSec32bit 10

5.2.2 GetRefTmr1MicroSec32bit 10

5.2.3 GetTiSpan100MicroSec32bit 10

5.2.4 GetTiSpan1MicroSec32bit 10

5.3 Interrupt Functions 10

5.3.1 Interrupt Function Name 10

5.3.1.1 Design Rationale 11

5.4 Module Internal (Local) Functions 11

5.4.1 Local Function #1 11

5.4.1.1 Design Rationale 11

5.4.1.2 Processing 11

5.5 GLOBAL Function/Macro Definitions 11

5.5.1 GLOBAL Function #1 11

5.5.1.1 Design Rationale 11

5.5.1.2 processing 11

6 Known Limitations with Design 12

7 UNIT TEST CONSIDERATION 13

Appendix A Abbreviations and Acronyms 14

Appendix B Glossary 15

Appendix C References 16

Introduction

Purpose

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.

CDD_NxtrTi & High-Level Description

Nexteer Time Complex Driver

Refer to FDD to be created under CR EA4#164

Design details of software module

Refer to FDD to be created under CR EA4#164

Graphical representation of CDD_NxtrTi

Data Flow Diagram

Refer to FDD to be created under CR EA4#164

Component level DFD

Refer to FDD to be created under CR EA4#164

Function level DFD

Refer to FDD to be created under CR EA4#164

Constant Data Dictionary

Program (fixed) Constants

Embedded Constants

Local Constants

Software Component Implementation

Refer to FDD to be created under CR EA4#164

Sub-Module Functions

Init: NxtrTiInit1

Design Rationale

None

Store Module Inputs to Local copies

None

(Processing of function)………

Refer to FDD to be created under CR EA4#164

Module Outputs

None

NxtrTiInit0

Design Rationale

To be called by the user during initialization. If timers are not required prior to starting the

* RTE, this function does not need to be called directly by a user.

(Processing of function)

Non-RTE version of Nexteer Time Initialization function. Calling this function will initialize and

* start the hardware timers used by this module if not already done.

Per: NxtrTiPer1

Design Rationale

None

Store Module Inputs to Local copies

None

(Processing of function)………

Refer to FDD to be created under CR EA4#164

Store Local copy of outputs into Module Outputs

Refer to FDD to be created under CR EA4#164

Server Runnables

GetRefTmr100MicroSec32bit

Design Rationale

Refer to FDD to be created under CR EA4#164

(Processing of function)

Refer to FDD to be created under CR EA4#164

GetRefTmr1MicroSec32bit

Design Rationale

Refer to FDD to be created under CR EA4#164

(Processing of function)

Refer to FDD to be created under CR EA4#164

GetTiSpan100MicroSec32bit

Design Rationale

Refer to FDD to be created under CR EA4#164

(Processing of function)

Refer to FDD to be created under CR EA4#164

GetTiSpan1MicroSec32bit

Design Rationale

Refer to FDD to be created under CR EA4#164

(Processing of function)

Refer to FDD to be created under CR EA4#164

Interrupt Functions

None

Interrupt Function Name

None

Design Rationale

None

Module Internal (Local) Functions

Local Function #1

None

Design Rationale

Processing

GLOBAL Function/Macro Definitions

Refer to 5.1.2

GLOBAL Function #1

Design Rationale

processing

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