LrnPinionCentr_MDD
Module Design Document
For
LrnPinionCentr
12-Jan-2018
Prepared By:
Brendon Binder,
Nexteer Automotive,
Saginaw, MI, USA
Change History
| Description | Author | Version | Date |
| Initial Version | ML | 1.0 | 18-Sep-2017 |
| Updated DaVinci graphic for Cal name change | BRB | 2.0 | 12-Jan-2018 |
Table of Contents
1 Introduction 5
1.1 Purpose 5
1.2 Scope 5
2 LrnPinionCentr & High-Level Description 6
3 Design details of software module 7
3.1 Graphical representation of LrnPinionCentr 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: LrnPinionCentrInit1 9
5.1.1.1 Design Rationale 9
5.1.2 Per: LrnPinionCentrPer1 9
5.1.2.1 Design Rationale 9
5.2 Server Runnable 9
5.2.1 SetInpPrm 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
5.4.3 Local Function #3 10
5.4.3.1 Description 10
5.4.4 Local Function #4 10
5.4.4.1 Description 10
5.4.5 Local Function #5 10
5.4.5.1 Description 11
5.4.6 Local Function #6 11
5.4.6.1 Description 11
5.5 GLOBAL Function/Macro Definitions 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
LrnPinionCentr & High-Level Description
Refer FDD.
Design details of software module
Graphical representation of LrnPinionCentr

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: LrnPinionCentrInit1
Refer FDD Simulink model
Design Rationale
Refer to Anomaly EA4#17174. Implementation deviates to fix this issue for build.
Per: LrnPinionCentrPer1
Refer FDD Simulink Model
Design Rationale
None
Server Runnable
SetInpPrm
Refer FDD Simulink Model
Interrupt Functions
None
Module Internal (Local) Functions
Local Function #1
| Function Name | RunMinMax | Type | Min | Max |
| Arguments Passed | HwAg_HwDeg_T_f32 | float32 | -1440.0 | 1440.0 |
| PinionCentrLrnEna_Cnt_T_logl | boolean | FALSE | TRUE | |
| *MaxHwPosn_HwDeg_T_f32 | float32 | -1440.0 | 1440.0 | |
| *MinHwPosn_HwDeg_T_f32 | float32 | -1440.0 | 1440.0 | |
| Return Value | None |
Description
Implementation of ‘Running MinMax’ function.
Local Function #2
| Function Name | PosAgVelStCtrl1 | Type | Min | Max |
| Arguments Passed | HwAg_HwDeg_T_f32 | float32 | -1440.0 | 1440.0 |
| MotVelCrf_MotRadPerSec_T_f32 | float32 | -1350.0 | 1350.0 | |
| TarMotVel_MotRadPerSec_T_f32 | float32 | 0.0 | 1600.0 | |
| *PinionCentrLrnSt_Cnt_T_u08 | uint8 | 0 | 7 | |
| *TqCmd_MotNwtMtr_T_f32 | float32 | -8.8 | 8.8 | |
| *MotPosnCmd_MotRad_T_f32 | float32 | -1440.0 | 1440.0 | |
| Return Value | None |
Description
Implementation of ‘POSANGVEL State Control 1’ function.
Local Function #3
| Function Name | PosMotTqStCtrl2 | Type | Min | Max |
| Arguments Passed | *PinionCentrLrnSt_Cnt_T_u08 | uint8 | 0 | 7 |
| *TqCmd_MotNwtMtr_T_f32 | float32 | -8.8 | 8.8 | |
| *MotPosnCmd_MotRad_T_f32 | float32 | -1440.0 | 1440.0 | |
| Return Value | None |
Description
Implementation of ‘POSMTRTRQ State Control 2’ function.
Local Function #4
| Function Name | NegAgVelStCtrl3 | Type | Min | Max |
| Arguments Passed | HwAg_HwDeg_T_f32 | float32 | -1440.0 | 1440.0 |
| MotVelCrf_MotRadPerSec_T_f32 | float32 | -1350.0 | 1350.0 | |
| TarMotVel_MotRadPerSec_T_f32 | float32 | 0.0 | 1600.0 | |
| *PinionCentrLrnSt_Cnt_T_u08 | uint8 | 0 | 7 | |
| *TqCmd_MotNwtMtr_T_f32 | float32 | -8.8 | 8.8 | |
| *MotPosnCmd_MotRad_T_f32 | float32 | -1440.0 | 1440.0 | |
| Return Value | None |
Description
Implementation of ‘NEGANGVEL State Control 3’ function.
Local Function #5
| Function Name | NegMotTqStCtrl4 | Type | Min | Max |
| Arguments Passed | MaxHwPosn_HwDeg_T_f32 | float32 | -1440.0 | 1440.0 |
| MinHwPosn_HwDeg_T_f32 | float32 | -1440.0 | 1440.0 | |
| *PinionCentrLrnSt_Cnt_T_u08 | uint8 | 0 | 7 | |
| *TqCmd_MotNwtMtr_T_f32 | float32 | -8.8 | 8.8 | |
| *MotPosnCmd_MotRad_T_f32 | float32 | -1440.0 | 1440.0 | |
| Return Value | None |
Description
Implementation of ‘NEGMTRTRQ State Control 4’ function.
Local Function #6
| Function Name | MoveToStCtrl5 | Type | Min | Max |
| Arguments Passed | HwAg_HwDeg_T_f32 | float32 | -1440.0 | 1440.0 |
| TarHwAg_HwDeg_T_f32 | float32 | -1440.0 | 1440.0 | |
| MotVelCrf_MotRadPerSec_T_f32 | float32 | -1350.0 | 1350.0 | |
| TarMotVel_MotRadPerSec_T_f32 | float32 | 0.0 | 1600.0 | |
| *PinionCentrLrnSt_Cnt_T_u08 | uint8 | 0 | 7 | |
| *TqCmd_MotNwtMtr_T_f32 | float32 | -8.8 | 8.8 | |
| *MotPosnCmd_MotRad_T_f32 | float32 | -1440.0 | 1440.0 | |
| Return Value | None |
Description
Implementation of ‘MOVETO State Control 5’ function.
GLOBAL Function/Macro Definitions
None
Known Limitations with Design
None
UNIT TEST CONSIDERATION
None
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 | 2.01 |
| 5 | FDD – SF024A_LrnPinionCentr_Design | See Synergy Subproject verison |