Real - time parameter tuning using xPC Target and C - MEX S - Function.

Hi everyone,

I have built a C - MEX S-Function which uses 5 parameters and I am using the generated block in a model running on an xPC Target - Machine.

I would like to know if there is any chance to be able to tune the parameters in real-time, without inlining the S - Function, as I have no previous experience in using the TLC. Also, I have read on the TLC User's Guide that I should avoid inlining S-Functions whose mdlOutputs() function include a large - sized code, which happens to be the case.

Any help would be greatly appreciated.

Cheers, Agamemnon

[TAB]

How the parameters are defined for S-function ?

Are U passing you from the s-function dialog block ?

[Agamemnon Krasoulis]

Yes, exactly. I pass them as dialog box parameters.

Answer 1

[Rajiv Ghosh-Roy]

They should automatically be tunable. The only thing is that the parameter names will show up as "P1", "P2", etc.

[Agamemnon Krasoulis]

Apparently, they are not. I think they should be registered as run - time parameters in order to be tunable in real-time.

Answer 2

[TAB]

To make parameters as tunable, you can pass the parameter values from base workspace.

To change the values at run time -

1. Change the parameter value at base workspase

2. Give a update command to the model.To give update command, simply select the running model and press Ctrl+D.

[Agamemnon Krasoulis]

Thank you for the answer, but I am afraid this doesn't help. I repeat that Simulink is running on external mode (I run the model on a xPC Target Machine).

[TAB]

It will work in external mode also. Set "Batch Download" option to ON in "External Mode Control Panel" to make it work.

For more info refer thread http://www.mathworks.in/matlabcentral/answers/30729-real-time-workshop-embedded-coder-command-line-functions-to-download-tunable-parameters