slbuild Simulink model subsystem failure

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Vico Wu
Vico Wu 2023-1-18
评论： Phab 2025-6-4
I have a simulink model, there is subsystem inside the model, and I want to generate C code from the subsystem in the model using the slbuild function. However, it prompts that only models or model handles can be generated.The help documentation describes the code generation that can be used for subsystem. How can I generate it? I'm using a script generation.
SubSysName = [strSubSysName '/' strBlkName];
slbuild(SubSysName);
Warning: rtwbuild failed to generate code for LmpCtrl,First argument to 'slbuild' must be a model name or a handle to a model.

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回答（1 个）

Ganapathi Subramanian
It is my understanding that you are working on a Simulink model and has an uncertainty in generating C code for a subsystem.
To generate C code for a subsystem, 'slbuild' function is used. The syntax for slbuild function for a subsystem is ‘slbuild(SubSysName)’. Here the ‘SubSysName’ corresponds to the full block path of the subsystem.
SubSysName=[strModelName '/' strSubSysName];
%strModelName is the name of the model which has the subsytem
slbuild(SubSysName);
  1 个评论
Phab
Phab 2025-6-4
Is there a way to build a subsystem without opening the model?
Let's say I want to build the 'myModel/mySubsystem':
open('myModel');
slbuild('myModel/mySubsystem');
works, but without opening the model first the process fails:
% open('myModel');
slbuild('myModel/mySubsystem');
Or is there anyother way to not open the model first?

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