Real-Time Workshop User's Guide

Tracing Generated Code Back to Your
Simulink Model

The Real-Time Workshop writes system/block identification tags in the generated code. The tags are designed to help you identify the block, in your source model, that generated a given line of code. Tags are located in comment lines above each line of generated code.

The tag format is <system>/block_name, where:

• system is either:
• the string 'root', or
• a unique system number assigned by Simulink
• block_name is the name of the block.

The following code fragment illustrates a tag comment adjacent to a line of code generated by a Gain block at the root level of the source model.

/* Gain Block: <Root>/Gain */
rtb_temp3 *= (rtP.root_Gain_Gain);

The following code fragment illustrates a tag comment adjacent to a line of code generated by a Gain block within a subsystem one level below the root level of the source model.

/* Gain Block: <S1>/Gain */
rtB.temp0 *= (rtP.s1_Gain_Gain);

In addition to the tags, the Real-Time Workshop documents the tags for each model in comments in the generated header file model.h. The following illustrates such a comment, generated from a source model, foo. foo has a subsystem Outer with a nested subsystem Inner.

/* Here is the system hierarchy for this model.
 *
 * <Root> : foo
 * <S1>   : foo/Outer
 * <S2>   : foo/Outer/Inner
 */

To trace a tag back to the generating block:

1. Open the source model.
2. Close any other model windows that are open.
3. Use the MATLAB hilite_system command to view the desired system and block.

As an example, consider the model foo mentioned above. If foo is open,

hilite_system('<S1>') 

opens the subsystem Outer and

hilite_system('<S2>/Gain1') 

opens the subsystem Outer and selects and highlights the Gain block Gain1 within that subsystem.

Advanced Options Page

Other Interactions Between Simulink and the Real-Time Workshop