App Designer And Arduino (Reading continuous voltage from Potentiometer )

Question

Eisa Alyaqoub 2019-11-13

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/490784-app-designer-and-arduino-reading-continuous-voltage-from-potentiometer

回答： Roja Boran Gökhan 2021-10-13

Hello,

I am new to App designer. I am trying to read the voltage from Anaolog input from the Arduino uno and desplay the change of the voltage on Gauge using readVotage(), but it does not work. It read reads the first value when I first starts the app, but when I keep changing the voltage from the potentiometer, it does not update in the Gauge.

Here is the code.

function SwitchValueChanged(app, event)
            value = app.Switch.Value; % using a sweitch just to controll the code and LED
            voltage= readVoltage(app.a,"A0");
            if value == "On"
                writeDigitalPin(app.a,"D9",1);
                app.Gauge.Value = voltage;
                app.EditField.Value=voltage;
            else
                writeDigitalPin(app.a,"D9",0);
                app.Gauge.Value = 0;
                app.EditField.Value=0;
            end
end

By the way, when I run the code in a normal Matlab scripts, it works prefect and the voltage reading updates whenever I change the value of the potentiometer.

Any help with explantion would be appriciate it.

Thank you in advance.