MATLAB REAL-TIME WORKSHOP EMBEDDED CODER - S Bedienungsanleitung PDF herunterladen (Seite 20)

Figure 4: RTW EC - non-reusable code options for release 2007a

3.2.4 Simulation Using the Generated Code

To compare between a fixed-point simulation and a simulation with the generated

code an S-function of the generated code can be obtained by simply selecting an

option to generate an S-function in the code generation pane. The user can test the

behaviour of the generated code by replacing the original fixed-point model

reference with the generated S-function block.

3.2.5 External Function Calls and S-function Support

Replacing a hardware invocation with another function during simulation stage is

not always practical when generating code with Real-Time Workshop Embedded

Coder due to the difficulties of shaping the interface of the code. Here the only

way to achieve the desired result is to use so called Legacy Code. Legacy code

helps integrate external code into the model. In this project an S-function is

generated and added to the model. Legacy code is then used so that the S-function

block is replaced by the desired hardware function call in the generated code.

However legacy code can not be used with reusable code unless the option

SS_OPTION_WORKS_WITH_CODE_REUSE is set in the S-function.

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MATLAB REAL-TIME WORKSHOP EMBEDDED CODER - S Bedienungsanleitung Seite 20