How can I use Legacy Code Tool to create a Simulink S-function block with multiple output ports in Simulink 7.0 (R2007b)?

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MathWorks Support Team 2009-9-10

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https://ww2.mathworks.cn/matlabcentral/answers/93969-how-can-i-use-legacy-code-tool-to-create-a-simulink-s-function-block-with-multiple-output-ports-in-s

评论： Sainath Varikuti 2015-6-23

I want to use Legacy Code Tool to create a Simulink S-function block with multiple output ports in Simulink 7.0 (R2007b).

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Answer 1

MathWorks Support Team 2018-5-11

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https://ww2.mathworks.cn/matlabcentral/answers/93969-how-can-i-use-legacy-code-tool-to-create-a-simulink-s-function-block-with-multiple-output-ports-in-s#answer_103320

In order to create a S-function block with multiple output ports from existing C code using Legacy Code Tool, the specification has to be provided in the "OutputFcnSpec" field of the LEGACY_CODE structure. An example implementation is shown in the attached files.

The function "lct_simple_demo" uses the existing C-code "myfunc.c" to create a S-function block with multiple ports. This S-function block is used in the demo "lct_demo.mdl" model.

To run the function, type the following at the MATLAB command prompt:

lct_simple_demo

Multiple outputs from an existing C-code can also be obtained by using a "bus". An example implementation of the same is shown in the demo "Calling Legacy Functions with Structure Arguments Using Buses". To view this demo, type the following at the MATLAB command prompt:

showdemo sldemo_lct_bus_script