Simulink equivalent of inputname () or genvarname() for logging

Hello!

I would like to know if I can find an equivalent of MATLAB function inputname() or genvarname() for using in Simulink block.

Actually, I get an error

Function 'inputname' not supported for code generation.

I used a MATLAB block with code

function out = getVarName(var)

out = inputname(1);

end

In fact, this function I need for logging/debugging on ARM-target (using Simulink coder), so I don't want to change variables to structures.

By the way, could you please recomend me logging techniques for Simulink coder?

Thanks in advance!

[madhan ravi]

Could you please tell the use case of using inputname() for this purpose?

[Dimitri]

Yes, for exemple, I need to know the value of boolean variable, that represent of state of specific component (true --> Ready, false --> off). I have a numerous of this variables and I want, in ideal, have a file with: (example)

[time] | variable name | variable state

8746 bSensor1 True

8747 bMoover5 Falsa

Of course, I can manualy create a string constant, but I have quite a lot of flags and I like to do it in the simpliest way. Maybe my solutuon to use inputname() has no sense and I need to generate blocks automaticaly or etc

Answer 1

[Fangjun Jiang]

Not sure if you are aware, the MATLAB Function block is typically executed at every simulation step. So even if inputname() and genvarname() worked, you would give it a name at every simulation step?? Of course, there are ways to make it run only once per simulation, but that is not how it is typically done to log or debug signal data.

To log a signal, select the signal line, right click, select "Properties" and fill the dialog. This has to be done pre-simulation. It can't be done while the simulation is running. This is for simulation. For data logging in a real-time target, see

web(fullfile(docroot, 'slrealtime/ug/signal-logging.html'))

[Dimitri]

Super! That's what I was I was searching for! Thanks a lot!