How can I change the lamp color while the application is running?

Hi everybody!

I want to inroduce a lamp in my applycation, that shows the status of the application.

-Grey: introducing data.

-Red: calculating.

-Green finished.

The PROBLEM is that while the aplication is running the lamp color doesn´t change. When introducing the data it is grey, as it is set, but when I press the calculation button, it doesn`t change color to red, even if it is the first comand in the code. It seems like the application cannot send the order in real time.

I tried the following and no one worked:

• Switch command.
• Lamps states.
• Internal function.

Any suggestion to get the lamp red while runnig and green when finished?

Thanks!

[Walter Roberson]

Is this a question about using Arduino to connect to a I2C bus to write lamp colors to a device?

[Esteban Zubiria]

No. I just want to display a lamp with red color in the window of the computer while the program is running (just after pressing RUN button). So the user knows that the program started.

Thanks.

[Walter Roberson]

Are you talking about a uilamp component? https://www.mathworks.com/help/matlab/ref/matlab.ui.control.lamp-properties.html ? If so then are you using drawnow() after you set the lamp state so that MATLAB has a chance to update the screen?

[Esteban Zubiria]

Yes I was talking about uilamp component and I wasn´t using drawnow().

Now that I am using it, it works as I wanted.

Thank you very much Walter!

Answer 1

[Walter Roberson]

Use drawnow() to give MATLAB a chance to update the screen.