Code Generation File Does not exist.

For a project I am trying to convert a Simulink model, XXX, which consits out of XXX_1 and XXX_2 into an XYZ file. However, I keep on getting this error in the build sumarry: "Code generation file does not exist.". You can find the full output here.

XYZ.export('XXX')

Warning: Removed 'C:\Users\Friso Meeusen\ Uni\XXX\out\ExportCode' from the

MATLAB path for this MATLAB session.

See 'doc path' for more information.

> In verifyAndExport

In XYZ.export (line 38)

### Verify and Export script executed for model XXX.

### Executing Model Advisor checks.

Running Model Advisor

Running Model Advisor on XXX_1

Warning: ['XXX_1'] : Simscape Multibody visualization using the Mechanics Explorer is not supported for

models using model reference. Please turn off visualization in the Simscape Multibody:Explorer configuration pane

of the referenced model 'XXX_1'. Resolve this issue in order to remove the warning.

> In modeladvisorutil2

In modeladvisorutil2

In modeladvisorprivate

In Simulink.ModelAdvisor/handleModelCompileForCheck

In Simulink.ModelAdvisor/run

In Simulink.ModelAdvisor/runCheck

In ModelAdvisor.run>runMACheckIDListMultMdls

In ModelAdvisor/run

In verifyModel

In verifyAndExport

In XYZ.export (line 38)

============================================================

Model Advisor run: 16-Jul-2022 11:48:33

Configuration: None

System: XXX

System version: 10.4

Created by: Friso Meeusen

============================================================

(1) Pass: Check sample time of outports [check ID: XYZ.OutportSampleTimeCheck]

------------------------------------------------------------

(2) Pass: Check step size [check ID: XYZ.FixedStepCheck]

------------------------------------------------------------

(3) Pass: Model information check [check ID: XYZ.InformationCheck]

------------------------------------------------------------

(4) Pass: Check top model pattern [check ID: XYZ.TopModelCheck]

------------------------------------------------------------

(5) Pass: Check data types for in and outports [check ID: XYZ.DataTypeCheck]

------------------------------------------------------------

(6) Pass: Check dimension for in and outports [check ID: XYZ.DimensionCheck]

------------------------------------------------------------

(7) Pass: Check names of ports and models [check ID: XYZ.PortNameCheck]

------------------------------------------------------------

(8) Pass: Check test point paths [check ID: XYZ.TestPointCheck]

------------------------------------------------------------

(9) Pass: Check reference model names [check ID: XYZ.DuplicateRefModelNameCheck]

------------------------------------------------------------

(10) Pass: Check storage class used [check ID: XYZ.StorageClassCheck]

------------------------------------------------------------

Summary: Pass Warning Fail Not Run

10 0 0 0

============================================================

Systems passed: 1 of 1

Systems with warnings: 0 of 1

Systems failed: 0 of 1

Summary Report

### All checks passed!

### Generating code.

### A toolchain is selected that is not supported for simulator code. Using MinGW to build simulator code.

### Starting serial model reference code generation build

### Checking the status of model reference code generation target for model 'XXX_2' used 'XXX'

### Model reference code generation target (XXX_2.c) for model XXX_2 may be out of date. The model or library 'XXX_2'has changed.

### Starting build procedure for: XXX_2

### Generating code and artifacts to 'Target environment subfolder' folder structure

### Code for the model reference code generation target for model XXX_2 is up to date because no functional changes were found in the referenced model.

### Saving binary information cache.

### Model reference code generation target for XXX_2 is up to date.

### Checking the status of model reference code generation target for model 'XXX_1' used in 'XXX'

### Model reference code generation target (XXX_1.c) for model XXX_1 may be out of date. The model or library 'XXX_1' has changed.

### Starting build procedure for: XXX_1

### Generating code and artifacts to 'Target environment subfolder' folder structure

Warning: ['XXX_1'] : Simscape Multibody visualization using the Mechanics Explorer is not supported for

models using model reference. Please turn off visualization in the Simscape Multibody:Explorer configuration pane

of the referenced model 'XXX_1'. Resolve this issue in order to remove the warning.

Warning: The referenced model 'XXX_1' has set Single output/update function, but Simulink is unable to

honor this request. Some possible reasons for this are

* The model has a continuous sample time.

* The model is saving states.

### Code for the model reference code generation target for model XXX_1 is up to date because no functional changes were found in the referenced model.

### Saving binary information cache.

### Model reference code generation target for XXX_1 is up to date.

### Simulink cache artifacts for 'XXX_2' were created in 'C:\Users\Friso Meeusen\OneDrive - Uni\XXX\cache\XXX_2.slxc'.

### Simulink cache artifacts for 'XXX_1' were created in 'C:\Users\Friso Meeusen\OneDrive - Uni\XXX\cache\XXX_1.slxc'.

### Starting build procedure for: XXX

### Generating code and artifacts to 'Target environment subfolder' folder structure

### Generating code into build folder: C:\Users\Friso Meeusen\OneDrive - Uni\XXX\out\IntelWin32_XYZ\XXX

Warning: File 'codedescriptor.dmr' not found.

Warning: File 'codedescriptor.dmr' not found.

Warning: File 'codedescriptor.dmr' not found.

Warning: File 'codedescriptor.dmr' not found.

### Invoking Target Language Compiler on XXX.rtw

### Using System Target File: C:\Users\Friso Meeusen\AppData\Roaming\MathWorks\MATLAB Add-Ons\Toolboxes\XYZ Toolbox for Simulink\SystemTargetFile\XYZ.tlc

### Loading TLC function libraries

.......

### Initial pass through model to cache user defined code

.

### Caching model source code

.....................................................

Error: Simulink Coder Error: Simulink Coder Fatal: Failed to compute step size for TID=[0...1] in 'ModelReference' Block: '<Root>/Robot'

Main program:

==> [00] C:\Program Files\MATLAB\R2021b\rtw\c\tlc\public_api\block_api.tlc:LibBlockSampleTime(346)

[01] C:\Users\Friso Meeusen\AppData\Roaming\MathWorks\MATLAB Add-Ons\Toolboxes\XYZ Toolbox for Simulink\MainFileGenerator\utilityFunctions.tlc:myLibWriteSubsystemStruct(215)

[02] C:\Users\Friso Meeusen\AppData\Roaming\MathWorks\MATLAB Add-Ons\Toolboxes\XYZ Toolbox for Simulink\MainFileGenerator\generateMain.tlc:FcnGenerateMain(91)

[03] C:\Users\Friso Meeusen\OneDrive - Uni\XXX\out\IntelWin32_XYZ\XXX\tlc\XYZ_file_process.tlc:<NONE>(15)

[04] C:\Program Files\MATLAB\R2021b\rtw\c\tlc\mw\formatwide.tlc:<NONE>(566)

.

### Writing header file XXX_types.h

### Writing header file XXX.h

.

### Writing source file XXX.c

### Writing header file XXX_private.h

### Writing header file rtmodel.h

### Writing source file simulationWrapper.c

### TLC code generation complete.

### Build procedure for XXX aborted due to an error.

Build Summary

Top model targets built:

Model Action Rebuild Reason

==========================================================================

XXX Failed Code generation information file does not exist.

0 of 3 models built (2 models already up to date)

Build duration: 0h 0m 22.007s

Error using tlc_new

Error: Errors occurred - aborting

Error in callTLCService

Error in tlc_c

Error in tlc_c

Error in coder.internal.ModelBuilder>i_buildProcedure (line 706)

buildResult = tlc_c(hCodegenMgr,...

Error in coder.internal.ModelBuilder.make_rtw (line 119)

[buildResult, mainObjFolder] = i_buildProcedure...

Error in build_target

Error in build_target

Error in build_standalone_rtw_target

Error in slbuild_private

Error in slbuild_private

Error in sl_feval

Error in slbuild

Error in slbuild

Error in rtwbuild

Error in verifyAndExport

Error in verifyAndExport

Error in XYZ.export (line 38)

verifyAndExport(model, varargin{:});

Please let me know if you have an idea to fix this.

Thank you in advance!

Answer 1

[Kshittiz]

Hi,

I understand that you are encountering an error message stating : “Code Generation file does not exist” error.

The error message suggests that the code generation process for your Simulink model has failed as it could not find a required file.

Upon further investigation of the error log, I conclude that the issue is occurring due to the model named ‘XXX’. The specific error message related to this model is:

Error: Simulink Coder Error: Simulink Coder Fatal: Failed to compute step size for TID=[0...1] in 'ModelReference' Block: '<Root>/Robot'

This error message suggests that there might be an issue related to the step size configuration in your Simulink model, particularly within a 'ModelReference' block.

You can try the following workarounds to address this issue:

1. Verify that the step sizes are correctly configured in your Simulink model, especially in the 'ModelReference' block named 'Robot'.
2. Examine the 'ModelReference' block named 'Robot' to see if there are any configurations or settings that might be causing the step size computation to fail.
3. Since you are using a ‘ModelReference’ block, it means your model has multiple referenced models. Make sure that the simulation settings are consistent across all referenced models.

I hope the insight on the error message and the workaround mentioned helps in resolving the issues you are facing.

Thanks,

Kshittiz