MATLAB: Is the custom code include information not copied when copying a chart in Stateflow 7.0 (R2007b)

c codecustomfieldsincludestateflow

I have included custom C-code into my Stateflow chart and entered the include information in 'Tools -> Open Simulation Target -> Custom Code'. After copying my chart to another model, the include fields are left blank and I have to manually enter the include information again, to avoid errors during simulation.

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Stateflow 7.0 (R2007b) does not allow automatic copying of include fields inside the custom code when copying a Stateflow chart. This is because include paths/files, etc are part of the target specifications and are not part of the chart.

To work around this issue, you will need to explicitly copy the S-fun target object via Model explorer.

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MATLAB: Does the compilation of the model result in an error when using literal code symbols in an Action definition in Stateflow 6.0 (R14)

This is expected behavior in Stateflow 6.0 (R14). While the parser does ignore the lines surrounded by '$' signs, the Stateflow model still has to be translated into C code before the model is run. Therefore, the function read_memory still has to be defined.

This function definition has to be passed to the compiler via the Stateflow S-Function target options. More information on including custom code into Stateflow can be found in the documentation under "Integrating Custom Code with Stateflow Targets". This can be accessed by entering the following at the MATLAB Command Prompt:

web([docroot,'/toolbox/stateflow/ug/f1-1026868.html'])

It is good practice to avoid using literal code symbols in Stateflow whenever possible. Instead, it is better to directly implement C code into a Stateflow model. By using this approach instead of literal code symbols, you have the ability to pass inputs and outputs directly to your C code.

MATLAB: Am I not able to obtain the Stored Integer (SI) value from a fixed point number in a Stateflow chart

The ability to obtain the Stored Integer value from a fixed point number in Stateflow is not available at this time.

As a workaround, define a macro to use a simple C-function call that returns long(x) for the input argument 'x'. That will provide the Stored Integer value.

As reference, see the attached model. In the Stateflow chart, note that 'a' is a fixed point number and 'op' contains the stored integer value. Notice that the C-code is included under 'Include paths' under Target options in the Stateflow chart and the macro is defined under 'Include code'.

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Related Solutions

MATLAB: Does the compilation of the model result in an error when using literal code symbols in an Action definition in Stateflow 6.0 (R14)

MATLAB: Am I not able to obtain the Stored Integer (SI) value from a fixed point number in a Stateflow chart

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