MATLAB: How to determine the port data type of a masked subsystem in Simulink 7.5 (R2010a)

simulink

I would like to programmatically determine the port data type of a masked subsystem.

Best Answer

This can be done by querying the "CompiledPortDataTypes" block parameter after compiling the model. To see how you can do this, follow these steps:

1. Download the attached model "example.mdl".

2. Compile the model with the following command:

>> example([],[],[],'compile')

3. Query the "CompiledPortDataTypes" parameter of the subsystem block:

>> get_param('example/Subsystem','CompiledPortDataTypes')

This returns the port data types in cell arrays of strings, stored in the returned structure's "inport" and "outport" fields.

4. Terminate compilation:

>> example([],[],[],'term')

Related Solutions

MATLAB: How to query the data type of every input and output port in a Simulink model

Note that in order to query the data type, you need to compile the model first. Try the following example:

vdp
% open the model                    
vdp([],[],[],'compile'); 
% compile the model
h = get_param('vdp/Mu','Porthandles');
% get the port handles
get_param(h.Outport,'CompiledPortDataType')
% get the output port data type
vdp([],[],[],'term')  
% terminate the compilation

For a generic model name such as 'gcs', consider using the EVAL function. Here is an example:

vdp
eval([gcs,'([],[],[],''compile'');'])
h = get_param('vdp/Mu','Porthandles');
get_param(h.Outport,'CompiledPortDataType')
eval([gcs,'([],[],[],''term'')'])

MATLAB: How to access the port width, data types, and dimensions individually for the blocks in the Simulink model from the MATLAB command line

You can access the port width, data type, and dimensions of individual blocks in a Simulink model by using the GET_PARAM function and the following properties:

"CompiledPortDataType"

"CompiledPortWidth"

"CompiledPortDimensions"

The simulation has to be running or compiled in order for the above properties to return the correct value. You can "compile" the model and then use the GET_PARAM command as follows:-

modelname([],[],[],'compile')
q=get_param(gcb,'PortHandles');
get_param(q.Inport,'CompiledPortDataType')
get_param(q.Inport,'CompiledPortWidth')
modelname([],[],[],'term')

where modelname is the name of your Simulink model.

Best Answer

Related Solutions

MATLAB: How to query the data type of every input and output port in a Simulink model

MATLAB: How to access the port width, data types, and dimensions individually for the blocks in the Simulink model from the MATLAB command line

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