Creating a serialport as public variable

Hello everybody,

I've got a problem defining a serialport as a public variable. Doing that I get the following error message:

I have defined the properties as following:

    properties (Access = public)
        TCPcont                 tcpclient       % Description
        TCPprog                 tcpclient       % Description
        COM_con                 serialport      % Serialport for USB Connection
        
    end

Does anyone have an idea why it's working for the TCP-Client but not for the serialport?

Thank you so much, all the best

Aaron

Answer 1

[Antonio Hortal]

The issue is that your code is trying to validate the properties requiring them to be of the class next to them. When your app is created, Matlab is trying to initialize these properties as tcpclient.empty() and serialport.empty(). More on property validation in this article

While tcpclient is actually a class (and therefore tcpclient.empty() does exist as a method), serialport is not. The command serialport is a function whose output is an element of the class internal.Serialport. What you can do is replace the 'serialport' by 'internal.Serialport'

Hope that helped :)