Communication between Java and Matlab Simulink Stateflow?

 Hey everyone:

 I have a question of communication between Java and Matlab Simulink Stateflow.

 My goal is:
 Have a java application and a Matlab Simulnik Stateflow run parallel on the same machine.

 Have communicating between Java and Matlab Simulink Stateflow. Prefer TCP/IP.

 Basically, the idea is using the Stateflow as a statemachine. The input of Sateflow comes from the Java and Java can get the updated state of the Stateflow model via Scope in Simulink.

 I know that I can generate C/C++ from Stateflow. But I would rather go for interacting between Java and Stateflow.

 Any one have idea how to achieve this goal? Am I on the right track to do this or is it possible to achieve the goal? Thank you very much.

 Some information after I google the web for your reference

 "Those experts from The MathWorks support team also issued a warning that it will be very tricky to pass back the result of a MATLAB function to Java." according to "An Asynchronous Java Interface to MATLAB"
 http://www.softwareresearch.net/fileadmin/src/docs/publications/C102.pdf

 TCP/IP Socket Communications in MATLAB
 http://iheartmatlab.blogspot.com/2008/08/tcpip-socket-communications-in-matlab.html

 Waiting for asynchronous events
 http://undocumentedmatlab.com/blog/waiting-for-asynchronous-events

Answer 1

[Sebastian Castro]

Hi Yi-Zong,

First thing I would ask you to do is check whether you have Instrument Control Toolbox, as this provides built-in functionality to do TCP/IP communication from Simulink. The blocks of interest are TCP/IP Receive and TCP/IP Send. If you end up going for UDP communication, there are blocks for that too.

Otherwise, there is a generic way of calling Java from MATLAB code, as shown in this page. Given that Stateflow charts use MATLAB, you can include this code in your charts.

NOTE: This will work if your chart won't be used for code generation, since Java calls aren't supported in C/C++ generated code. You will have to declare any unsupported functions as extrinsic, which is shown in steps 6-8 of this page.

- Sebastian