How to access a signal from a bus structure inside matlab function

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Andy
Andy 2015-8-12
回答： Chaitali Gondhalekar 2015-8-14
Is it possible to select a signal from a bus structure inside a MATLAB function and then scale it and then assign it to an output?
e.g. some thing like the following:
function [output] = myfunc(input, signalSelection, scaling)
% #codegen
output = input(signalSelection)*scaling;
end
where input is a defined bus structure, signalSelection is a uint32 and scaling is a single?
The error I keep getting is "Function 'mtimes' is not defined for values of class 'struct'."

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回答（1 个）

Chaitali Gondhalekar
I understand that you want to access a single signal from a Bus structure in the MATLAB workspace.
Assuming that you are using "Simulink.Bus.createMATLABStruct" to create the Bus structure "input" mentioned in your code snippet, you can access its fields with a dot operator and scale it using the "scaling" parameter. For example, if your Bus structure has a signal "pulseSignal", you can access it as
>> output = input.pulseSignal * scaling
Hope this helps!

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