BattVltg_MDD
Module Design Document
ForBattery or Switched Voltage Measurement
and Arbitration
VERSION: 3.0
DATE: 03-JUN-2016
Prepared By:
Nick Saxton
Location: The official version of this document is stored in the Nexteer Configuration Management System.
Revision History
| Sl. No. | Description | Author | Version | Date |
| 1 | Initial Version | SB | 1.0 | 13-Mar-2015 |
| 2 | Fixed the typo in Per1 function name | SB | 2.0 | 09-Apr-2015 |
| 3 | Updated for FDD v2.0.0 | NS | 3.0 | 03-Jun-2016 |
Table of Contents
3 BattVltg & High-Level Description 7
4 Design details of software module 8
4.1 Graphical representation of BattVltg 8
5.1 User defined typedef definition/declaration 9
5.2 Variable definition for enumerated types 9
6.1 Program(fixed) Constants 10
6.1.2 Module specific Lookup Tables Constants 10
7 Software Module Implementation 11
7.1.1 Initialization Functions 11
7.1.2.3 Store Module Inputs to Local copies 11
7.1.2.4 (Processing of function)……… 11
7.1.2.5 Store Local copy of outputs into Module Outputs 11
7.3 Serial Communication Functions 12
7.4 Local Function/Macro Definitions 12
7.5 GLObAL Function/Macro Definitions 12
8 Known Limitations With Design 13
Abbrevations And Acronyms
| Abbreviation | Description |
| DFD | Design functional diagram |
| MDD | Module design Document |
| <ADD more to the table if applicable> | |
References
This section lists the title & version of all the documents that are referred for development of this document
| Sr. No. | Title | Version |
| <1> | <MDD Guidelines> | Process 3.06.00 |
| <2> | <Software Naming Conventions> | Process 3.06.00 |
| <3> | <Coding standards> | Process 3.06.00 |
| <4> | <FDD - ES250A Battery or Switched Voltage Measurement and Arbitration> | See Synergy subproject version |
| <Add if more available> |
BattVltg & High-Level Description
This function scales the Battery and Switched Battery voltages used in the EA4.0 architecture. The module determines which of the three voltage inputs (battery or switched battery 1 or switched battery 2) should be used by the software application.
The function provides some generic logic to decide between the switched battery voltage 1 and switched battery voltage 2 to effective utilize the switched voltage in case one of the switched voltages fails.
Design details of software module
Graphical representation of BattVltg
Data Flow Diagram
Module level DFD
N/A
Sub-Module level DFD
N/A
COMPONENT FLOW DIAGRAM
N/A
Variable Data Dictionary
User defined typedef definition/declaration
<This section documents any user types uniquely used for the module.>
| Typedef Name | Element Name | User Defined Type | Legal Range (min) | Legal Range (max) |
| N/A | ||||
Variable definition for enumerated types
| Enum Name | Element Name | Value |
| N/A |
Constant Data Dictionary
Program(fixed) Constants
Embedded Constants
< All program specific constants will be defined in detail >
Local
| Constant Name | Resolution | Units | Value |
| BATTVLTGCORRLNSTSSWD2FLT_CNT_T_U08 | 1 | CNT | 3 |
| BATTVLTGCORRLNSTSSWD1FLT_CNT_T_U08 | 1 | CNT | 5 |
| BATTVLTGCORRLNSTSBATTVLTGFLT_CNT_T_U08 | 1 | CNT | 6 |
| BATTVLTGCORRLNSTSNOFLT_CNT_T_U08 | 1 | CNT | 7 |
Global
<This section lists the global constants used by the module. For details on global constants, refer to the Data Dictionary for the application>
| Constant Name |
| N/A |
Module specific Lookup Tables Constants
<(This is for lookup tables (arrays) with fixed values, same name as other tables)>
| Constant Name | Resolution | Value | Software Segment |
| <Refer Constant name qualified in [2]> | <Refer MDD guidelines [1]> | <Refer MDD guidelines [1]> | <Refer MDD guidelines [1]> |
Software Module Implementation
Sub-Module Functions
None
Initialization Functions
None
PERIODIC FUNCTIONS
(Note: For multiple periodic functions, insert new headers at the “Header 2” level – subset of “7.1.2 Periodic Functions” and follow the same sub-section design shown below). If none required, place the text “None”)>
Per: BattVltgPer1
Design Rationale
None
Store Module Inputs to Local copies
Refer to FDD
(Processing of function)………
Refer to FDD
Store Local copy of outputs into Module Outputs
Refer to FDD
Interrupt Functions
None
Serial Communication Functions
None
Local Function/Macro Definitions
<If these are numerous and defined in a separate source file then reference the source file only.>
Local Function #1
| Function Name | (Exact name used) | Type | Min | Max |
| Arguments Passed | None | <Refer MDD guidelines[1]> | <Refer MDD guidelines[1]> | <Refer MDD guidelines[1]> |
| Return Value | N/A |
Description
None
GLObAL Function/Macro Definitions
GLObAL Function #1
| Function Name | (Exact name used) | Type | Min | Max |
| Arguments Passed | None | <Refer MDD guidelines[1]> | <Refer MDD guidelines[1]> | <Refer MDD guidelines[1]> |
| Return Value | N/A |
Description
N/A
TRANSIENT FUNCTIONS
None
Known Limitations With Design
None
UNIT TEST CONSIDERATION
None
Appendix
None