How to use Simscape drop-down menu

I am trying to implement a drop-down menu in a custom Simscape block. Other codes use "foundation.enum" as seen below: (ssc_fuel_cell)

num_ports = foundation.enum.num_ports.one; % Number of ports

% 1 - one

% 2 - two

% 3 - three

% 4 - four

However when I try:

model = foundation.enum.model.Adiabatic; % Thermodynamic model

% 1 - Adiabatic

% 0 - Isothermal

The error is:" 'foundation.enum.model.Adiabatic' is not defined in this scope. "

Any ideas on how to properly implement this?

[piyush]

Hi, were you able to fix this?

Answer 1

[piyush]

classdef thermo_model < int32
    enumeration
        isothermal (0)
        adiabatic (1)
    end
end

save this as thermo_model.m

in the simscape component

parameters
t_m = thermo_model.isothermal; % select from dropdown list
end

use t_m with the equations

% Conditional parameter
if t_m == thermo_model.isothermal % isothermal model 
    equations
    % 
end
else 
    equations % t_m == thermo_model.adiabatic % adiabatic model
    % 
    end
end