Real-Time Workshop User's Guide

Parameter Tuning via model_pt.c

By enabling the TLC variable ParameterTuning, you can generate a file containing data structures that enable a running program to access model parameters without use of external mode. The file is named model_pt.c.

ParameterTuning is disabled by default. To enable generation of model_pt.c, use a %assign statement in your system target file.

%assign ParameterTuning = 1

Alternatively, you can append the following command to the System target file field on the Target configuration section of the Real-Time Workshop page.

-aParameterTuning=1

model_pt.c contains two parameter mapping structures containing information required for parameter tuning:

• The BlockTuning structure contains all the modifiable block parameters by block name and parameter name.
• The VariableTuning structure contains all the modifiable workspace variables that were specified in a Simulink parameter dialog box.

The structure and content of the model_pt.c file are documented in matlabroot/rtw/c/src/pt_readme.txt. For example source code using the parameter tuning API, see matlabroot/rtw/c/src/pt_print.c.

Signal Monitoring via Block Outputs

Target Language Compiler API for Signals and Parameters