How to connect matlab and C# to create a winform gui to run a simulink model

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John Smith
John Smith 2020-10-16
回答： Mario Malic 2020-10-16
I am new to Matlab and trying to code a winform based GUI for a simulink model in C#. But i had issue about how to communicate them efficiently.
2 different ways i tried:
1) I tried is COM communication between C# to matlab but after loading model, it was frozen.
C# script for communicating matlab over COM:
MLApp.MLApp matlab = new MLApp.MLApp();
matlab.Visible = 0;
matlab.Execute(@"cd('path to model')");
matlab.Execute("model");
matlab.Execute("set_param('model','SimulationCommand','start')");
It looks like a buffer overflow to me but I couldn't find any resources on the subject.
How can i prevent freezing?
2) I tried to communicate c# and matlab to control simulink model using udp protocol. I coded a matlab script to be bridge. However, i realized that i need to create more than one thread that will communicate with each other. Eventhough i used parellel computing toolbox in matlab, i can not accomplish it.
matlab script :
u = udp('', 'LocalHost', '127.0.0.1', 'LocalPort', 49013);
fopen(u);
while(true)
command = fread(u);
if(command == 1)
%start model
set_param('model','SimulationCommand','start')
elseif(command == 3)
%pause model
set_param('model','SimulationCommand','pause')
.
.
.
else(command == 4)
%stop model
set_param('model','SimulationCommand','pause')
end
end
Is there a way to communicate threads each other in matlab?
Any suggestion would be nice.
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Mario Malic
Mario Malic 2020-10-16
Based on the comments section, looks like this would be the way to start up the Simulink externally without freezing.
matlab.Execute("cd('path to model')");
matlab.Execute("start_simulink")
matlab.Execute("model");
% or
% matlab.Execute("open_system(model)");

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