Like other Simulink® blocks, MATLAB Function blocks support bidirectional traceability, but extend navigation to lines of source code. That is, you can navigate between a line of generated code and its corresponding line of source code. In other Simulink blocks, you can navigate between a line of generated code and its corresponding object.
In addition, you can select to include the source code as comments in the generated code. When you select MATLAB source code as comments parameter, the MATLAB® source code appears immediately after the associated traceability tag. For more information, see Include MATLAB Code as Comments in Generated Code.
For information about how traceability works in Simulink blocks, see Verify Generated Code by Using Code Tracing.
To enable traceability comments in your code, you must have a license for Embedded Coder® software. These comments appear only in code that you generate for an
Embedded Real-Time (
Traceability is not supported for MATLAB files that you call from a MATLAB Function block.
This example shows how to trace between source code and generated code in a
MATLAB Function block in the
model. Follow these steps:
Open the Embedded Coder app.
Change the system target file to
prompted. Traceability comments appear hyperlinked in generated code only for
embedded real-time (
In the Configuration Parameters dialog box, on the Code Generation > Report pane, select these parameters, if not already selected:
In the model window, press Ctrl+B.
This action generates source code and header files for the
rtwdemo_dynamicio model that contains the
blocks. After the code generation process is complete, the code generation
report appears automatically.
rtwdemo_dynamicio.c hyperlink in the
Scroll down through the code to see the traceability comments, which appear as
/*...*/ brackets, as in this example.
<S1>:1:2 hyperlink in this traceability
/* '<S1>:1:2' y = sum(u,2); */
Line 2 of the function in the source code appears highlighted in the MATLAB Function Block Editor.
You can trace a line in a MATLAB function to lines of generated code. For example, right-click on line 2 of your function and select Code Generation > Navigate to Code from the context menu.
The code location for line 2 appears highlighted in
You can trace a line of generated code to a line of source code in a MATLAB function using the line number hyperlinks in the generated code.