Integrate C/C++ Code Using S-Function Builder

Integrate your C/C++ code into Simulink^® models by creating S-functions automatically

S-function builder is a Simulink block that integrates C/C++ code automatically using the specifications you provide. The S-function builder also serves as a wrapper for the generated S-function in the models that use S-function.

Blocks

S-Function Builder

Integrate C or C++ code to create S-functions

Functions

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Configure S-Function Builder Block

`Simulink.SFunctionBuilder.add`	Add input, output, parameter, library item, or state to S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.update`	Update attributes for input port, output port, or parameter of S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.delete`	Remove input, output, parameter, library item, or state from S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.setBuildOptions`	Set build options for S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.setSettings`	Set settings for S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.setSFunctionName`	Set name of S-function for S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.setTargetLanguage`	Set language for S-function generated using S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.setUserCode`	Set code for methods of S-function generated using S-Function Builder block (Since R2022a)

Get Configuration for S-Function Builder Block

`Simulink.SFunctionBuilder.list`	List inputs, outputs, parameters, library items, and states for S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.getBuildOptions`	Get build options for S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.getSettings`	Get settings for S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.getSFunctionName`	Get name of S-function generated by S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.getTargetLanguage`	Get language for S-function generated using S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.getUserCode`	Get code for method of S-function generated using S-Function Builder block (Since R2022a)

Generate S-Function for S-Function Builder Block

`Simulink.SFunctionBuilder.build`	Build S-function and generate MEX file for S-Function Builder block (Since R2022a)
`Simulink.SFunctionBuilder.generateCodeOnly`	Build S-function without generating MEX file for S-Function Builder block (Since R2022a)

Generate FMU from S-Function Builder Block

Simulink.SFunctionBuilder.generateFMU Generate FMU compatible with FMI 3.0 standards from C/C++ code using S-Function Builder block (Since R2023b)

Topics

Build S-Functions Automatically Using S-Function Builder

Use the S-Function Builder to automatically generate S-functions from C code.

Featured Examples

Custom Code and Hand Coded Blocks Using the S-Function API

This library launches examples of different types of Simulink® S-functions. Simulink S-functions allow you to extend Simulink with new hand coded blocks, interface to custom external code, and create live interfaces to other programs. Use this example to access models containing S-functions in C, C++, M, and Fortran®.

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