Unit Delay Initialization C Code Generation

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Jack 2024-3-14

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移动：Fangjun Jiang 2024-3-28

I have a model in which I am generating C code for. This model has a Unit Delay block in with an intial condition set to 0. When I generate the C code, where the intialization step would usually occur for a non zero Initial condition, No code is generated but I assume somewhere it must be intialising this variable. Where is this done instead and why does it change.

Thanks

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Fangjun Jiang 2024-3-18

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移动：Fangjun Jiang 2024-3-28

You could experiment. Set the initial value to be zero and non-zero to see where the code is located. Note that in C code, the initial value for a variable is zero by default. Or it can be initialized when the variable is declared, such as

int myNum = 15;

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Fangjun Jiang 2024-3-18

移动：Fangjun Jiang 2024-3-28

no. There should be a generated C code variable that corresponds to the output of the Unit Delay block. Search the declaration of that variable in the C code. You can turn on traceability to help find it.

https://www.mathworks.com/help/releases/R2019b/rtw/ref/code-to-model.html

Jack 2024-3-18