Get sample rate in a Matlab function block in Simulink
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Glenn Kubota 2021년 12월 23일
답변: Salman Ahmed 2021년 12월 31일
If i use MATLAB function block in a Simulink project, is there a way of determining the sample rate in the code in that block? If I use a MATLAB System block, I can use getSampleTime(obj).SampleTime to give me the time for a frame and then use the frame size to give me the time for a sample, but that won't work for a MATLAB function block. I'd like to use the MATLAB function block if possible because the coding is simple. Is there a way to get the sample rate or am I stuck using a MATLAB system block?
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I've accomplished this in the past using a probe block:
That block can output a vector representing the sample time. You should be able to feed this value to your MATLAB function block (as an input) and use the value.
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You might be able to accomplish this by calling simulink.block.getSampleTimes inside the MATLAB function block:
However, that function does not generate code, so you will have to use it in conjunction with coder.extrinsic and coder.const. I think using a probe block is much more straightforward.
Salman Ahmed 2021년 12월 31일
You could also use the following workaround to access the sample rate inside the MATLAB function block:
Here s1 is the Simulink model name, MAT is the name of the MATLAB function block.
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