LrndRackCentr_MDD
Module Design Document
For
LrndRackCentr
October 26, 2017
Prepared By:
Matthew Leser,
Nexteer Automotive,
Saginaw, MI, USA
Change History
| Description | Author | Version | Date |
| Initial Version | ML | 1.0 | 26-Oct-2017 |
Table of Contents
2 LrndRackCenter & High-Level Description 6
3 Design details of software module 7
3.1 Graphical representation of LrndRackCentr 7
4.1 Program (fixed) Constants 8
5 Software Component Implementation 9
5.1.1 Init: LrndRackCentrInit1 9
5.1.2 Per: LrndRackCentrPer1 9
5.4 Module Internal (Local) Functions 9
5.5 GLOBAL Function/Macro Definitions 10
6 Known Limitations with Design 11
Appendix A Abbreviations and Acronyms 13
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 Name | Resolution | Units | Value |
|---|---|---|---|
| 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 Name | ManLrnRackCentr | Type | Min | Max |
| Arguments Passed | HwAg_HwDeg_T_f32 | float32 | -1440 | 1440 |
| MotVelCrf_MotRadPerSec_T_f32 | float32 | -1350 | 1350 | |
| MotTqCmd_MotNwtMtr_T_f32 | float32 | -8.8 | 8.8 | |
| Return Value | None |
Description
Implementation of ‘MANUAL LEARN RACK CENTER’ subsystem.
Local Function #2
| Function Name | ChkRackCentr | Type | Min | Max |
| Arguments Passed | HwTrvl_HwDeg_T_f32 | float32 | 0 | 2880 |
| RackCentr_HwDeg_T_f32 | float32 | -1440 | 1440 | |
| *RackCentrMotAgVld_Cnt_T_logl | boolean | FALSE | TRUE | |
| *RackCentrCmpl_Cnt_T_logl | boolean | FALSE | TRUE | |
| Return Value | None |
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 Acronym | Description |
|---|---|
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
| Term | Definition | Source |
|---|---|---|
| MDD | Module Design Document | |
| DFD | Data Flow Diagram |
References
| Ref. # | Title | Version |
|---|---|---|
| 1 | AUTOSAR Specification of Memory Mapping (Link:AUTOSAR_SWS_MemoryMapping.pdf) | v1.4.0 R4.0 Rev 3 |
| 2 | MDD Guideline | EA4 01.00.01 |
| 3 | Software Naming Conventions.doc | 1.0 |
| 4 | Software Design and Coding Standards.doc | 2.1 |
| 5 | FDD – SF039A_LrndRackCentr_Design | See Synergy Subproject verison |