Recommended Settings Summary for Model Configuration Parameters

The following tables summarizes the impact of each configuration parameter on debugging, traceability, efficiency, and safety considerations, and indicates the factory default configuration settings for the ERT target. The Simulink^® Coder™ configuration parameters are documented in Recommended Settings Summary for Model Configuration Parameters. For additional details, click the links in the Configuration Parameter column.

Mapping of Application Requirements to the Optimization Pane

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Application lifespan (days)	No impact	No impact	Optimal finite value	inf	auto
Optimize using the specified minimum and maximum values	Off	Off	On	No impact	Off
Remove root level I/O zero initialization	No impact	No impact	On (GUI) off (command line) (execution, ROM), No impact (RAM)	No recommendation	On
Remove internal data zero initialization	No impact	No impact	On (execution, ROM)	No recommendation	On
Remove Code from Tunable Parameter Expressions That Saturates Out-of-Range Values	Off	Off	On (execution, ROM)	No recommendation	On
Remove code that protects against division arithmetic exceptions	No impact	No impact	On (execution, ROM)	Off	Off
Pack Boolean data into bitfields	No impact	No Impact	Off (execution, ROM), On (RAM)	No impact	Off
Pass reusable subsystem outputs as	No impact	No impact	Structure reference (ROM), Individual arguments (execution, RAM)	No impact	Individual Arguments

Mapping of Application Requirements to the Code Generation Pane: Memory Sections Parameters

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Package	No impact	No impact	No impact	No impact	---None---
Initialize/Terminate	No impact	No impact	No impact	No impact	Default
Execution	No impact	No impact	No impact	No impact	Default
Shared utility	No impact	No impact	No impact	No impact	Default
Constants	No impact	No impact	No impact	No impact	Default
Inputs/Outputs	No impact	No impact	No impact	No impact	Default
Internal data	No impact	No impact	No impact	No impact	Default
Parameters	No impact	No impact	No impact	No impact	Default
Validation results	No impact	No impact	No impact	No impact	No package selected.

Mapping of Application Requirements to the Code Generation Pane: Report Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Code-to-model	On	On	No impact	No recommendation	Off
Model-to-code	On	On	No impact	No recommendation	Off
Generate model Web view	No impact	No impact	No impact	No impact	Off
Eliminated / virtual blocks	On	On	No impact	No recommendation	Off
Traceable Simulink blocks	On	On	No impact	No recommendation	Off
Traceable Stateflow objects	On	On	No impact	No recommendation	Off
Traceable MATLAB functions	On	On	No impact	No recommendation	Off
Generate static code metrics	No impact	No impact	No impact	No impact	Off
Summarize which blocks triggered code replacements	No impact	No impact	No impact	No impact	Off

Mapping of Application Requirements to the Code Generation Pane: Comments Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Simulink block descriptions	On	On	No impact	No impact	On
Simulink data object descriptions	On	On	No impact	No impact	On
Custom comments (MPT objects only)	On	On	No impact	No impact	Off
Custom comments function	Valid file name	Valid file name	No impact	No impact	''
Stateflow object descriptions	On	On	No impact	No impact	On
Requirements in block comments	On	On	No impact	No recommendation	Off

Mapping of Application Requirements to the Code Generation Pane: Identifiers Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Global variables	No impact	Use default	No impact	No recommendation	$R$N$M
Global types	No impact	Use default	No impact	No recommendation	&N$R$M_T
Field name of global types	No impact	Use default	No impact	No recommendation	$N$M
Subsystem methods	No impact	Use default	No impact	No recommendation	$R$N$M$F
Subsystem method arguments	No impact	Use default	No impact	No recommendation	rt$I$N$M
Local temporary variables	No impact	Use default	No impact	No recommendation	$N$M
Local block output variables	No impact	Use default	No impact	No recommendation	rtb_$N$M
Constant macros	No impact	Use default	No impact	No recommendation	$R$N$M
Shared utilities identifier format	No impact	Use default	No impact	No recommendation	$N$C
Minimum mangle length	No impact	1	No impact	No impact	1
Maximum identifier length	Valid value	>30	No impact	>30	31
System-generated identifiers	No impact	No impact	No impact	No impact	Shortened
Generate scalar inlined parameters as	No impact	Macros	Literals	No impact	Literals
Use the same reserved names as Simulation Target	No impact	No impact	No impact	No impact	Off
Shared checksum length	No impact	No impact	No impact	No impact	8
EMX array utility functions identifier format	No impact	No impact	No impact	No recommendation	emx$M$N
EMX array types identifier format	No impact	No impact	No impact	No recommendation	emxArray_$M$N
Custom token text	No impact	Set a custom string and use $U in symbols	No impact	No impact	' '
#define naming	No impact	Force uppercase	No impact	No impact	None
Parameter naming	No impact	Force uppercase	No impact	No impact	None
Signal naming	No impact	Force uppercase	No impact	No impact	None
MATLAB function	No impact	No impact	No impact	No impact	''

Mapping of Application Requirements to the Code Generation Pane: Interface Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Support: floating-point numbers	No impact	No impact	Off (GUI), 'on' (command-line) for integer only	No impact	On (GUI), 'off' (command-line)
Support: complex numbers	No impact	No impact	Off for real only	No impact	On
Support: absolute time	No impact	No impact	Off	No recommendation	On
Support: continuous time	No impact	No impact	Off (execution, ROM), No impact (RAM)	No recommendation	Off
Support non-inlined S-functions	No impact	No impact	Off	No recommendation	Off
Support: variable-size signals	No impact	No impact	No impact	No recommendation	Off
Multiword type definitions	No impact	No impact	No impact	No recommendation	System defined
Maximum word length	No impact	No impact	No impact	No recommendation	256 for ERT targets 2048 for GRT targets
Pass root-level I/O as	No impact	No impact	No impact	No impact	Individual arguments
Use dynamic memory allocation for model initialization	No impact	No impact	No impact	No recommendation	Off
Terminate function required	No impact	No impact	No impact	No recommendation	On
Remove error status field in real-time model data structure	Off	No impact	On	No recommendation	Off
Include model types in model class	No impact	No impact	On	No recommendation	On
Combine signal/state structures	Off	No impact	No impact	On	No impact
Generate destructor	No impact	No impact	No impact	No recommendation	On
Use dynamic memory allocation for model block instantiation	No impact	No impact	On	No recommendation	Off

Mapping of Application Requirements to the Code Generation Pane: Verification Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Measure task execution time	On	On	Off	No recommendation	Off
Measure function execution times	On	On	Off	No recommendation	Off
Workspace variable	No impact	Valid MATLAB® variable name	No impact	No impact	Off
Save options	All data	All data	Summary data only	No impact	Summary data only
Measure task stack usage	On	On	Off	No recommendation	Off
Stack workspace variable	No impact	Valid MATLAB variable name	No impact	No impact	Off
Third-party tool	BullseyeCoverage or LDRAcover or LDRA tool suite	BullseyeCoverage or LDRAcover or LDRA tool suite	None (code coverage off)	No recommendation	None (code coverage off)
Enable portable word sizes	On	On	Off	No impact	Off
Enable source-level debugging for SIL	On	On	Off	No impact	Off

Mapping of Application Requirements to the Code Generation Pane: Code Style Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Parentheses level	Nominal (Optimize for readability)	Nominal (Optimize for readability)	Minimum (Rely on C/C++ operators for precedence)	No recommendation	Nominal (Optimize for readability)
Preserve operand order in expression	On	On	Off	No recommendation	Off
Preserve condition expression in if statement	On	On	Off	No recommendation	Off
Convert if-elseif-else patterns to switch-case statements	No impact	Off	On (execution, ROM), No impact (RAM)	No impact	On
Preserve extern keyword in function declarations	No impact	No impact	No impact	No impact	On
Preserve static keyword in function declarations	No impact	No impact	On (execution, ROM)	No impact	On
Suppress generation of default cases for Stateflow switch statements if unreachable	On	On	Off	No recommendation	On
Replace multiplications by powers of two with signed bitwise shifts	No impact	No impact	On	No impact	On
Casting modes	Nominal	Nominal	Nominal	Standards Compliant	Nominal
Array container type	No impact	No impact	No impact	No recommendation	C-style array
Indent style	K&R	K&R	K&R	K&R	K&R
Indent size	2	2	2	2	2

Mapping of Application Requirements to the Code Generation Pane: Templates Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Code templates: Source file (*.c) template	No impact	No impact	No impact	No impact	ert_code_template.cgt
Code templates: Header file (*.h) template	No impact	No impact	No impact	No impact	ert_code_template.cgt
Data templates: Source file (*.c) template	No impact	No impact	No impact	No impact	ert_code_template.cgt
Data templates: Header file (*.h) template	No impact	No impact	No impact	No impact	ert_code_template.cgt
File customization template	No impact	No impact	No impact	No impact	example_file_process.tlc
Generate an example main program	No impact	No impact	No impact	No impact	On
Target operating system	No impact	No impact	No impact	No impact	BareBoardExample

Mapping of Application Requirements to the Code Generation Pane: Code Placement Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Data definition	No impact	Valid value	No impact	No impact	Auto
Data definition filename	No impact	Valid value	No impact	No impact	global.c
Data declaration	No impact	Valid value	No impact	No impact	Auto
Data declaration filename	No impact	Valid value	No impact	No impact	global.h
#include file delimiter	No impact	Valid value	No impact	No impact	off
#include file delimiter	No impact	Valid value	No impact	No impact	Auto
Signal display level	No impact	Valid integer	No impact	No impact	10
Parameter tune level	No impact	Valid integer	No impact	No impact	10
File packaging format	No impact	No impact	No impact	No impact	Modular

Mapping of Application Requirements to the Code Generation Pane: Data Type Replacement Tab

Configuration Parameter	Debugging	Traceability	Efficiency	Safety precaution	Factory Default
Replace data type names in the generated code	No impact	On	No impact	No impact	Off
Replacement Name	No impact	Valid character vector	No impact	No recommendation	''

Related Topics

• Configure Model for Code Generation Objectives by Using Code Generation Advisor
• Code Generation Advisor Checks