Error executing 'duration' operator in stateflow

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Dheemanth D 2018-6-4

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https://ww2.mathworks.cn/matlabcentral/answers/403962-error-executing-duration-operator-in-stateflow

编辑： Amjad Elshenawy 2019-9-23

Hi,

I am trying to use a 'duration' logic operator in stateflow and unable to execute. I keep getting the following error:

The 'duration' class does not support code generation.

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Walter Roberson 2018-6-4

I speculate that there is confusion between the duration operator of Stateflow and the duration datatype that is associated with datetime handling. I wonder how the code is intended to tell the difference?

Is it possible that you are applying duration to a number instead of to a logical result?

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Answer 1

Amjad Elshenawy 2019-9-23

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https://ww2.mathworks.cn/matlabcentral/answers/403962-error-executing-duration-operator-in-stateflow#answer_393050

编辑：Amjad Elshenawy 2019-9-23

Hello Dheemanth

I guess you was using the "duration" operator insude a truth table.

If my assumption is correct, then you shall use the duration oprator inside statflow but outside the truth table.

[Cf. https://www.mathworks.com/help/stateflow/ug/simplify-stateflow-chart-using-the-duration-operator.html]

You shall assign the output of the duration operator to a local variable and then pass this local variable to the truth table. The truth table shall then reside inside the statechart.