Allowing no more than 1 invocation of a simulink block (that does I/O) in a model.

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Sietse 2015-1-20

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https://ww2.mathworks.cn/matlabcentral/answers/170742-allowing-no-more-than-1-invocation-of-a-simulink-block-that-does-i-o-in-a-model

回答： A Jenkins 2015-1-20

   Hello,
I created an embedded target for the stm32f4 discovery board.
It has several blocks that control I/O devices, e.g. reading an ADC.
There often should be no more than 1 invocation of such a block in a model.

The question is, how can enforce this. E.g. that an error is displayed if i try to put a second block in the model. Maybe some trickery with callback functions? Or is there a better way to do this.

Thanks in advance,
     Sietse

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Answer 1

A Jenkins 2015-1-20

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https://ww2.mathworks.cn/matlabcentral/answers/170742-allowing-no-more-than-1-invocation-of-a-simulink-block-that-does-i-o-in-a-model#answer_165369

Make that block its own model. Reference the block from your top level model. Then set the "Total number of instances allowed per top model" of your I/O block.