Bus Assignment creates new copy of variable in generated code ?

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Shivaputra Narke 2019-2-7

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https://ww2.mathworks.cn/matlabcentral/answers/443675-bus-assignment-creates-new-copy-of-variable-in-generated-code

评论： Shivaputra Narke 2019-5-15

Hi,

I have created one bus using Bus Creator and the output has been written to 'My_Signal' (Simulink.Signal object). That signal is fed to another subsystem through port.

I am using Bus Assignment to update one field of bus. Generated code looks like this,

My_Signal.Field_1= 5;
My_Signal.Field_2= 6;
...
...
...
% Subsystem2
rtb_My_Signal=My_Signal;
rtb_My_Signal.Field_2=10;
...
..

I do not understand why Embedded coder is creating new parameter ? Is it possible to reduce the unneccasry bus copy ?

I want the generated code looks like below

My_Signal.Field_1= 5;
My_Signal.Field_2= 6;
...
...
...
% Subsystem 2
My_Signal.Field_2=10;

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Helia Pouyllau 2019-5-10

Hello, I am facing the same issue, do you have some documentation about how to use tlc files to avoid the copy ?

Shivaputra Narke 2019-5-15

Have you tried using Data Store Read and Data Store Write blocks ?

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