How to properly handle objects within level-2 Simulink S-Functions

Question

Zach Wright 2023-4-14

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https://ww2.mathworks.cn/matlabcentral/answers/1947488-how-to-properly-handle-objects-within-level-2-simulink-s-functions

回答： Jan Houska 2023-4-18

采纳的回答： Jan Houska

I'm attempting to use a level-2 S function to handle serial read/write to and from a device.

I need some help with two things:

How do I handle dialogue parameter inputs? I'd like to input the specified com port.
How can I create a serialport object that persists throughout an entire simulation? I'd like to avoid opening and closing the commport each iteration.

Thanks!

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Answer 1

Jan Houska 2023-4-18

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Hi Zach,

while this does not directly answer your question, have you tried to use the Packet Input/Output or Stream Input/Output blocks with the Serial Port driver? These blocks from the Simulink Desktop Real-Time product library should be able to handle reading/writing serial port devices out of the box, with no programming necessary.

Jan