Set Model Reference Discrete Sample Time Inheritance

Disallow model reference discrete sample time inheritance for a System object™. The System object defined in this example has one input, so by default, it allows sample time inheritance. To override the default and disallow inheritance, the class definition file for this example includes the allowModelReferenceDiscreteSampleTimeInheritanceImpl method, with its output set to false.

methods (Access = protected)
   function flag = ...
       allowModelReferenceDiscreteSampleTimeInheritanceImpl(obj)
     flag = false;
   end
end

View the method in the complete class definition file.

classdef MyCounter < matlab.System
  
   % MyCounter Count values
     
    properties
       Threshold = 1;
    end

    properties (DiscreteState)
       Count
    end
 
    methods (Static, Access = protected)
      function header = getHeaderImpl
         header = matlab.system.display.Header('MyCounter',...
           'Title','My Enhanced Counter',...
           'Text', 'This counter is an enhanced version.');
      end
    end

    methods (Access = protected)
       function flag = ...
            allowModelReferenceDiscreteSampleTimeInheritanceImpl(obj)
          flag = false
       end
       function setupImpl(obj,u)
          obj.Count = 0;
       end
       function y = stepImpl(obj,u)
          if (u > obj.Threshold)
             obj.Count = obj.Count + 1;
          end
          y = obj.Count;
       end
       function resetImpl(obj)
          obj.Count = 0;
       end
    end
end