Simulink coder TwinCAT issue

am trying to compile a S-function based model into Twincat object and I am getting the follwoing error. has anyone encountered the similar issue? Top model targets built: Mode

Top model targets built: Model Action Rebuild Reason ============================================================================= ConverterModelDUT Failed Code generation information file does not exist. 0 of 1 models built (0 models already up to date) Build duration: 0h 0m 5.212s

The call to TwinCatGrt_make_rtw_hook, during the after_make hook generated the following error: Dot indexing is not supported for variables of this type. The build process will terminate as a result.

Caused by:

• Dot indexing is not supported for variables of this type.

Component:Simulink | Category:Block diagram error

[Hedayatullah Fiazi]

same problem

Answer 1

[Chetan]

Hello @Soroush Azarian,

I Understand that you are facing an issue with the Simulink Coder TwinCAT target within MATLAB R2018b. The challenge seems to originate from the S-Function target generation process, involving a custom TMF that lacks a declaration for a mex file-compatible toolchain.

To begin addressing this, ensure the `tccert` file is correctly named:

File Naming and Location Verification:

• Check that the `tccert` file has the correct name and is located in the directory MATLAB expects.

File Name Modification:

• If necessary, rename the `tccert` file to conform to MATLAB's expected naming structure.

For more information you can refer the following MathWorks Documentation here:

https://www.mathworks.com/matlabcentral/answers/399694

If you are utilizing a version of MATLAB that predates R2018b, you may consider this as workaround:

1. Custom Toolchain Creation: Construct a custom toolchain derive it from MinGW64, but ensure the build actions are set to do nothing.

2. Toolchain Naming: Preface your custom toolchain's name with 'MinGW64' to sidestep any build issues within MATLAB.

3. Toolchain Registration: Register your new custom toolchain in MATLAB using the `coder.make.getToolchainInfoFromRegistry` function.

4. Toolchain Implementation: Adjust your model settings to build with the newly created custom toolchain.

Below is an example of how to register your custom toolchain:

tcInfo = coder.make.getToolchainInfoFromRegistry('YourCustomToolchain');
tcInfo.Name = ['MinGW64 ', tcInfo.Name];

Hope it helps !