Call C++ Class Methods Directly from a C Function Block - MATLAB & Simulink (original) (raw)
Main Content
This example shows how to use the C Function block to call C++ class methods. In this example, a C++ class and its methods are defined in adder_cpp.h and implemented in adder_cpp.cpp.
To run this example model, you must configure MATLAB® to use a C++ compiler. This can be done using the mex -setup C++ command, and selecting a C++ compiler.
To enable access to the C++ class from the C Function block, in the model, specify the header file and the source file in the Configuration Parameters > Simulation Target pane. In this model, the custom code header file adder_cpp.h declares an adder class along with the class methods.
In the Output Code section, the class method is called. In this example, the ports of the C Function block are configured as follows:
- The
adderclass objectadderObjis a persistent symbol of the C Function block, which instantiates the class object for use in the block. The object is destroyed at the end of simulation. - The input of the C Function block is mapped to
increment, which is an input argument to the class methodadd_one. - The output of the C Function block is mapped to
output, which receives the return value of the class methodadd_one.
