Integrate C/C++ Code Using Legacy Code Tool
You can integrate existing C (or C++) functions, such as device drivers, lookup tables, and general functions and interfaces, into Simulink® models by using the Legacy Code Tool. Use the Legacy Code Tool to specify the name of the S-function, files, and path required for the compilation, and options for the generated S-function.
Use the legacy_code function to generate an
S-function, compile and link the generated S-function, and create a mask for calling
the generated S-function.
Before you can use legacy_code, ensure that a C compiler is
set up for your MATLAB® installation.
Functions
legacy_code | Integrate existing C/C++ code using Legacy Code Tool |
Topics
- Integrate C Functions Using Legacy Code Tool
Use the Legacy Code Tool to generate S-functions automatically from existing C code.
- S-Functions Incorporate Legacy C Code
Incorporate legacy C code using a handwritten C MEX S-function, the S-Function Builder, and the Legacy Code Tool.
- Integrate C Code by Using the MATLAB Function Block
Use MATLAB Function blocks to call external C code and control enumeration and bus typedefs.
Featured Examples
Inputs Passed by Value or Address to Legacy Functions
Use the Legacy Code Tool to integrate legacy C functions that pass their input arguments by value versus address.
Output Passed by Return Argument from Legacy Functions
Use the Legacy Code Tool to integrate legacy C functions that pass their output as a return argument.
Fixed Point Signals in Legacy Functions
Use the Legacy Code Tool to integrate legacy C functions that pass their inputs and outputs using signals of fixed point data type.
Fixed Point Parameters in Legacy Functions
Use the Legacy Code Tool to integrate legacy C functions that pass their inputs and outputs using parameters of fixed point data type.
Lookup Tables Implemented in Legacy Functions
Use the Legacy Code Tool to integrate legacy C functions that implement N-dimensional table lookups.
Start and Terminate Actions Within Legacy Functions
Use the Legacy Code Tool to integrate legacy C functions that have start and terminate actions.
Using Buses with Legacy Functions Having Structure Arguments
Use the Legacy Code Tool to integrate legacy C functions with structure arguments using Simulink® buses.
Inherited Signal Dimensions for Legacy Function Arguments
Use the Legacy Code Tool to integrate legacy C functions whose arguments have inherited dimensions.
C++ Object Methods as Legacy Functions
Use the Legacy Code Tool to integrate legacy C++ object methods.
Persistent Memory Within Legacy Functions
Use the Legacy Code Tool to integrate legacy C functions with instance-specific persistent memory.
Multi-Dimensional Signals in Legacy Functions
Use the Legacy Code Tool to integrate legacy C functions with Multi-Dimensional Signals.
Complex Signals in Legacy Function
Use the Legacy Code Tool to integrate legacy C functions using complex signals.
Specified or Inherited Sample Time with Legacy Functions
Use the Legacy Code Tool to integrate legacy C functions with the sample time specified, inherited and parameterized.
