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Component Implementation
1 - StabyCmp_DesignReview
Overview
Summary SheetSynergy Project
Davinci Files
Source Code
MDD
PolySpace
Sheet 1: Summary Sheet

Sheet 2: Synergy Project
Sheet 3: Davinci Files
Sheet 4: Source Code
Rev 1.2 | 8-Jun-15 | |||||||||||||||||||||||
Peer Review Meeting Log (Source Code Review) | ||||||||||||||||||||||||
Source File Name: | StabyCmp.c | Source File Revision: | 3 | |||||||||||||||||||||
Header File Name: | N/A | Header File Revision: | ||||||||||||||||||||||
MDD Name: | StabyCmp_MDD.docx | Revision: | 3 | |||||||||||||||||||||
FDD/SCIR/DSR/FDR/CM Name: | SF029A_StabyCmp_Design | Revision: | 1.3.0 | |||||||||||||||||||||
Quality Check Items: | ||||||||||||||||||||||||
Rationale is required for all answers of No | ||||||||||||||||||||||||
Working EA4 Software Naming Convention followed: | ||||||||||||||||||||||||
for variable names | N/A | Comments: | ||||||||||||||||||||||
for constant names | N/A | Comments: | ||||||||||||||||||||||
for function names | N/A | Comments: | ||||||||||||||||||||||
for other names (component, memory | N/A | Comments: | ||||||||||||||||||||||
mapping handles, typedefs, etc.) | ||||||||||||||||||||||||
All paths assign a value to outputs, ensuring | N/A | Comments: | ||||||||||||||||||||||
all outputs are initialized prior to being written | ||||||||||||||||||||||||
Requirements Tracability tags in code match the requirements tracability in the FDD | N/A | Comments: | ||||||||||||||||||||||
requirements tracability in the FDD | ||||||||||||||||||||||||
All variables are declared at the function level. | N/A | Comments: | ||||||||||||||||||||||
Synergy version matches change history | Yes | Comments: | ||||||||||||||||||||||
and Version Control version in file comment block | ||||||||||||||||||||||||
Change log contains detailed description of changes | Yes | Comments: | ||||||||||||||||||||||
and Work CR number | ||||||||||||||||||||||||
Code accurately implements FDD (Document or Model) | Yes | Comments: | ||||||||||||||||||||||
See MDD design Rationale for Notch filter PIM | ||||||||||||||||||||||||
Verified no Compiler Errors or Warnings | Yes | Comments: | ||||||||||||||||||||||
Component.h is included | N/A | Comments: | ||||||||||||||||||||||
All other includes are actually needed. (System includes | N/A | Comments: | ||||||||||||||||||||||
only allowed in Nexteer library components) | ||||||||||||||||||||||||
Software Design and Coding Standards followed: | Version: 2.1 | |||||||||||||||||||||||
Code comments are clear, correct, and adequate | N/A | Comments: | ||||||||||||||||||||||
and have been updated for the change: [N40] and | ||||||||||||||||||||||||
all other rules in the same section as rule [N40], | ||||||||||||||||||||||||
plus [N75], [N12], [N23], [N33], [N37], [N38], | ||||||||||||||||||||||||
[N48], [N54], [N77], [N79], [N72] | ||||||||||||||||||||||||
Source file (.c and .h) comment blocks are per | Yes | Comments: | ||||||||||||||||||||||
standards and contain correct information: [N41], [N42] | ||||||||||||||||||||||||
Function comment blocks are per standards and | N/A | Comments: | ||||||||||||||||||||||
contain correct information: [N43] | ||||||||||||||||||||||||
Code formatting (indentation, placement of | N/A | Comments: | ||||||||||||||||||||||
braces, etc.) is per standards: [N5], [N55], [N56], | ||||||||||||||||||||||||
[N57], [N58], [N59] | ||||||||||||||||||||||||
Embedded constants used per standards; no | N/A | Comments: | ||||||||||||||||||||||
"magic numbers": [N12] | ||||||||||||||||||||||||
Memory mapping for non-RTE code | N/A | Comments: | ||||||||||||||||||||||
is per standard | ||||||||||||||||||||||||
All execution-order-dependent code can be | N/A | Comments: | ||||||||||||||||||||||
recognized by the compiler: [N80] | ||||||||||||||||||||||||
All loops have termination conditions that ensure | N/A | Comments: | ||||||||||||||||||||||
finite loop iterations: [N63] | ||||||||||||||||||||||||
All divides protect against divide by zero | N/A | Comments: | ||||||||||||||||||||||
if needed: [N65] | ||||||||||||||||||||||||
All integer division and modulus operations | N/A | Comments: | ||||||||||||||||||||||
handle negative numbers correctly: [N76] | ||||||||||||||||||||||||
All typecasting and fixed point arithmetic, | N/A | Comments: | ||||||||||||||||||||||
including all use of fixed point macros and | ||||||||||||||||||||||||
timer functions, is correct and has no possibility | ||||||||||||||||||||||||
of unintended overflow or underflow: [N66] | ||||||||||||||||||||||||
All float-to-unsiged conversions ensure the. | N/A | Comments: | ||||||||||||||||||||||
float value is non-negative: [N67] | ||||||||||||||||||||||||
All conversions between signed and unsigned | N/A | Comments: | ||||||||||||||||||||||
types handle msb==1 as intended: [N78] | ||||||||||||||||||||||||
All pointer dereferencing protects against | N/A | Comments: | ||||||||||||||||||||||
null pointer if needed: [N70] | ||||||||||||||||||||||||
Component outputs are limited to the legal range | N/A | Comments: | ||||||||||||||||||||||
defined in the FDD DataDict.m file : [N53] | ||||||||||||||||||||||||
All code is mapped with FDD (all FDD | Yes | Comments: | ||||||||||||||||||||||
subfunctions and/or model blocks identified | FilNotchInit' implementation is based on EA3. | |||||||||||||||||||||||
with code comments; all code corresponds to | ||||||||||||||||||||||||
some FDD subfunction and/or model block): [N40] | ||||||||||||||||||||||||
Review did not identify violations of other | Yes | Comments: | ||||||||||||||||||||||
coding standard rules | FDD change to correct filter implementation not done (time crunch for implementation before build date) | |||||||||||||||||||||||
Anomaly or Design Work CR created | No | Comments: List Anomaly or CR numbers | ||||||||||||||||||||||
for any FDD corrections needed | Systems group have been contacted for notch filter model | |||||||||||||||||||||||
to be created to address the deviations noted in the MDD | ||||||||||||||||||||||||
General Notes / Comments: | ||||||||||||||||||||||||
Change Owner: | Shruthi Raghavan | Review Date : | 01/30/17 | |||||||||||||||||||||
Lead Peer Reviewer: | Avinash James | Approved by Reviewer(s): | Yes | |||||||||||||||||||||
Other Reviewer(s): | Krishna Anne | Kryzsztof | ||||||||||||||||||||||
Sheet 5: MDD
Sheet 6: PolySpace
2 - StabyCmp_IntegrationManual
Integration Manual
For
StabyCmp
VERSION: 1.0
DATE: 21-July-2015
Prepared By:
Sankardu Varadapureddi,
Nexteer Automotive,
Saginaw, MI, USA
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 | Sankardu Varadapureddi | 1.0 | 21-July-2015 |
Table of Contents
3.2 Global Functions(Non RTE) to be provided to Integration Project 6
4 Configuration REQUIREMeNTS 7
4.2 Configuration Files to be provided by Integration Project 7
4.3 Da Vinci Parameter Configuration Changes 7
4.4 DaVinci Interrupt Configuration Changes 7
4.5 Manual Configuration Changes 7
5 Integration DATAFLOW REQUIREMENTS 8
5.1 Required Global Data Inputs 8
5.2 Required Global Data Outputs 8
5.3 Specific Include Path present 8
Abbrevations And Acronyms
Abbreviation | Description |
DFD | Design functional diagram |
MDD | Module design Document |
References
This section lists the title & version of all the documents that are referred for development of this document
Sr. No. | Title | Version |
v | FDD – SF029A_StabyCmp_Design | See Synergy sub project version |
2 | Software Naming Conventions | Process 4.01.00 |
3 | Software Design and Coding Standards | Process 4.01.00 |
Dependencies
SWCs
Module | Required Feature |
None |
Global Functions(Non RTE) to be provided to Integration Project
None
Configuration REQUIREMeNTS
Build Time Config
Modules | Notes | |
FLTINJENA | Set to ‘STD_ON’ for fault injection |
Configuration Files to be provided by Integration Project
None
Da Vinci Parameter Configuration Changes
Parameter | Notes | SWC |
None |
DaVinci Interrupt Configuration Changes
ISR Name | VIM # | Priority Dependency | Notes |
None |
Manual Configuration Changes
Constant | Notes | SWC |
None |
Integration DATAFLOW REQUIREMENTS
Required Global Data Inputs
Refer DataDict.m file in the FDD
Required Global Data Outputs
Refer DataDict.m file file in the FDD
Specific Include Path present
No
Runnable Scheduling
This section specifies the required runnable scheduling.
Init | Scheduling Requirements | Trigger |
StabyCmpInit1 | None | RTE (Init) |
Runnable | Scheduling Requirements | Trigger |
StabyCmpPer1 | None | RTE (2 ms) |
.
Memory Map REQUIREMENTS
Mapping
Memory Section | Contents | Notes |
None | ||
* Each …START_SEC… constant is terminated by a …STOP_SEC… constant as specified in the AUTOSAR Memory Mapping requirements.
Usage
Feature | RAM | ROM |
None |
Table 1: ARM Cortex R4 Memory Usage
NvM Blocks
None
Compiler Settings
Preprocessor MACRO
None.
Optimization Settings
None.
Appendix
None
3 - StabyCmp_MDD
Module Design Document
For
StabyCmp
Jan 27, 2017
Prepared By:
Shruthi Raghavan,
Nexteer Automotive,
Saginaw, MI, USA
Change History
Description | Author | Version | Date |
Initial Version | Sankardu Varadapureddi | 1.0 | 21-July-2015 |
Updated for FDD version 1.1.0 | Sankardu Varadapureddi | 2.0 | 11-Mar-2016 |
Updated to FDD version 1.3.0 | Shruthi Raghavan | 3.0 | 27-Jan-2017 |
Table of Contents
2 StabyCmp High-Level Description 5
3 Design details of software module 6
3.1 Graphical representation of ‘StabyCmp’ 6
4.1 Program (fixed) Constants 7
5 Software Component Implementation 8
5.1.2 Interrupt Service Routines 8
5.1.3 Server Runnable Functions 8
5.1.4 Module Internal (Local) Functions 8
6 Known Limitations with Design 10
Appendix A Abbreviations and Acronyms 12
Introduction
Purpose
Module design document for Stability Compensation.
StabyCmp High-Level Description
Refer FDD
Design details of software module
Graphical representation of ‘StabyCmp’
Data Flow Diagram
Component level DFD
Refer FDD
Function level DFD
Refer FDD
Constant Data Dictionary
Program (fixed) Constants
Embedded Constants
Refer .m file
Local Constants
None
Software Component Implementation
Sub-Module Functions
Initialization sub-module {StabyCmpInit1}
Design Rational:
FDD details are not complete for notch filter initialization. Upon discussion with FDD owner, implemented in line with EA3 implementation.
Periodic sub-module {StabyCmpPer1}
Refer FDD for details
Design Rational:
In design version 1.3.0, .m file has some additional PIMs for notch filters, which are not required in the notch filter implementation. Notch filter implementation in SW based on design 1.0.0 .m file PIMs is not changed.
New FDD model was requested but this wasn’t done on time and due to time crunch the difference between implementation and the model still exists.
Interrupt Service Routines
None
Server Runnable Functions
None
Module Internal (Local) Functions
Local Function #1
Function Name | FilNotchInit | Type | Min | Max | |
Arguments Passed | Inp | float32 | See unit test consideration | ||
FilNotchStRecPtr | FilNotchStRec1 | ||||
FilNotchGainRecPtr | FilNotchGainRec1 | ||||
Return Value | None |
Description
Notch filter initialization function implemented based on EA3 design.
Local Function #2
Function Name | FilNotchFullUpdOutp_f32 | Type | Min | Max |
Arguments Passed | Inp | float32 | See unit test consideration | |
FilNotchStRecPtr | FilNotchStRec1 | |||
FilNotchGainRecPtr | FilNotchGainRec1 | |||
Return Value | FilOut | float32 |
Description
Notch filter output calculation. Implemented based on ‘Compensator1’ block functionality. Compensator2, Compensator3 and Compensator4 also have the same functionality.
Transition Functions
None
Known Limitations with Design
Design has 8 PIMs to represent notch filters and a model block for notch filter has not been designed. This hasn’t been done yet in this revision due to the need to baseline on time for builds. No anomaly has been written but the Systems group was notified.
UNIT TEST CONSIDERATION
Since the notch filter implementation used in this module is dynamic in nature, absolute ranges are difficult to determine without pre-defined knowledge on the combination of coefficient values (A1, A2, B0, B1, B2). Because of this, the systems group ran simulations on 10 different combinations of coefficients (2 with defined default calibrations, 8 considered extreme cases of notch filters) and logged the ranges of the filter state variables and outputs during a frequency sweep. The ranges given throughout this module were taken as the worst case results of all of the given test cases.
To provide useful cases for unit testing, the boundary checks tested during unit testing should be altered to test the state variable minimum and maximum for each of the 10 test cases with the given coefficients set to the values given in that test case. In the case where the default values of the coefficients are used in a vector, the unit tester should not test the corresponding state variables with values over the range defined for that set of coefficients. See attached simulation results.
(Note: this section is copied from EA3 Stability Compensation documentation)
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) | v1.3.0 R4.0 Rev 2 |
2 | MDD Guideline | EA4 01.00.00 |
3 | EA4 Software Naming Conventions.doc | 01.00.00 |
4 | Software Design and Coding Standards.doc | 2.1 |
5 | FDD - SF029A_StabyCmp_Design | See Synergy sub project version |