How do I get the "Base Data Types" of the block Input/Output interface?

I want to get the "Base Data Types" of the Simulink module, what should I do?

[Fangping]

function [lgc,in1data,in2data] = compadata(inportdata_1,inportdata_2)

if iscell(inportdata_1)

inportdata_1=inp

ortdata_1{:};

end

if iscell(inportdata_2)

inportdata_2=inportdata_2{:};

end

%%输入口1

in1obj = evalin('base',['whos(''',inportdata_1,''');']);

if ~isempty(in1obj)

switch in1obj.class

case 'Simulink.AliasType'

in1data = evalin("base",[inportdata_1,'.BaseType;']);

case 'Simulink.NumericType'

temstr = evalin("base",[inportdata_1,';']);

switch temstr.DataTypeMode

case 'Fixed-point: slope and bias scaling'

in1data='';

if strcmp(temstr.Signedness,'Signed')

in1data = 'sfix';

elseif strcmp(temstr.Signedness,'Unsigned')

in1data = 'ufix';

end

if temstr.Slope == 1

if contains(in1data,'sfix')

in1data=['int',num2str(temstr.WordLength)];

elseif contains(in1data,'ufix')

in1data=['uint',num2str(temstr.WordLength)];

end

else

if rem(log2(temstr.Slope),1) == 0

in1data = [in1data,num2str(temstr.WordLength),'_En',num2str(abs(round(log2(temstr.Slope))))];

else

in1data = [in1data,num2str(temstr.WordLength),'_Sp',strrep(num2str(temstr.Slope),'0.','')];

end

if temstr.Bias ~=0

in1data = [in1data,'_B',num2str(temstr.Bias)];

end

end

case 'Fixed-point: unspecified scaling'

in1data='';

if strcmp(temstr.Signedness,'Signed')

in1data = 'sfix';

in1data = [in1data,num2str(temstr.WordLength),'_En',num2str(temstr.WordLength-2)];

elseif strcmp(temstr.Signedness,'Unsigned')

in1data = 'ufix';

in1data = [in1data,num2str(temstr.WordLength),'_En',num2str(temstr.WordLength-1)];

end

case 'Fixed-point: binary point scaling'

in1data='';

if strcmp(temstr.Signedness,'Signed')

in1data = 'sfix';

elseif strcmp(temstr.Signedness,'Unsigned')

in1data = 'ufix';

end

if temstr.FractionLength ~= 0

in1data = [in1data,num2str(temstr.WordLength),'_En',num2str(temstr.FractionLength)];

else

if contains(in1data,'sfix')

in1data=['int',num2str(temstr.WordLength)];

elseif contains(in1data,'ufix')

in1data=['uint',num2str(temstr.WordLength)];

end

end

end

end

else

if ~isempty(Simulink.findIntEnumType(inportdata_1))

in1data = Simulink.data.getEnumTypeInfo(inportdata_1,'StorageType');

else

in1data = inportdata_1;

end

end

This is an example I wrote, later you can use for reference.

Answer 1

[Piyush Kumar]

@Fangping,

You can follow these steps -

• Open your model in Simulink
• DEBUG => Information Overlays => PORTS => Base Data Types

For the entire model, data types of each signal in the model.

[Fangping]

Thank you for your answer, but this I know to show. I want to get its underlying data type, which can be done by way of code. It can be obtained directly in code.

As shown in the figure above, I can only get the data type at position 1 by compiling, but the base type I actually use is sfix16_En6. So that's position 2. How to get this port directly using sfix16_En6.

Answer 2

[Amith]

To determine the data types of Simulink modules, you can make use of the 'CompiledPortDataType' property.

Consider the below example which uses the Van der Pol oscillator model (`vdp`) available in MATLAB:

% open the model
vdp

% compile the model
vdp([],[],[],'compile'); 

% get the port handles
h = get_param('vdp/Mu','CompiledPortDataType');

% get the output port data type of the Mu block
h.OutPort{1};

% terminate the compilation
vdp([],[],[],'term')  

Note: Compiling the model is a prerequisite for querying the data types.

[Fangping]

This method still cannot get the basic data type, described as follows:

As shown in the figure above, I can only get the data type at position 1 by compiling, but the base type I actually use is sfix16_En6. So that's position 2. How to get this port directly using sfix16_En6.