How can i trigger a single activation of stateflow based on new receieved data?

Question

Orel Levy 2019-11-17

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https://ww2.mathworks.cn/matlabcentral/answers/491553-how-can-i-trigger-a-single-activation-of-stateflow-based-on-new-receieved-data

回答： Mark McBroom 2019-11-17

Hello everybody,

I have a simulink project which at certain times (not constant periods of time) generates an array of inputs I want to send to a stateflow chart.

the data is an array as follows:

[scenario_1, data_size_1,data_1,scenario_2, data_size_2,data_2].

where scenarios 1 and 2 are scalars, data_size 1 and 2 are scalars the states the following data length, and data 1 and 2 are vectors size: [data_size_m,1], where data_size_1~= data_size_2.

I first split the array into two different arrays, and then send them into the stateflow chart.

My question is how can I activate the stateflow chart only when a new input arrives?

Thanks,

Orel.

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Answer 1

Mark McBroom 2019-11-17

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https://ww2.mathworks.cn/matlabcentral/answers/491553-how-can-i-trigger-a-single-activation-of-stateflow-based-on-new-receieved-data#answer_401944

Two options.

You can use an event to trigger the statechart. In this case you will need Simulink logic to determine when the data is new/changed and then trigger the statechart.
Second option is to use the hasChanged() stateflow function to determine when your data has changed inside the state chart.