Simulink RTW IO handling
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Hello,
I am building a model in Simulink, with two levels of IO. In the root level I have input pins (right now specified as ports) that are meant to be written to by a model every step. Think of it as the valve position. Under the root level I have different subsystems, and I have constants that I want to be read from a database. Like 'K_Bias'. These will be held somewhere and written in.
In simulation I could fool Simulink into running by writing a m-file, but in this application I want to leave in handles to that my model calling the .exe can fill in the constants and input my signal. When I try to compile, I get the Block Error "error evaluating parameter" saying its an undefined function/variable. How do I work around this error? I was trying to understand placing variables as globally tunable and inline signals...but the documentation is a bit over my head.
Final note, running 2010b, have all the needed licenses/toolboxes.
Thanks in advance, Becky
6 Comments
Kaustubha Govind
on 27 Apr 2011
One option for you is to use the Environment Controller block (http://www.mathworks.com/help/toolbox/simulink/slref/environmentcontroller.html). You connect the Constant block to the "Sim" input and the Inport block to the "Coder" input.
Answers (1)
B. J.
on 17 Jun 2011
1 Comment
Kaustubha Govind
on 17 Jun 2011
Becky: You could also consider using Model Reference for your main algorithm, and then reference that from two harness models. That way, you have only one copy of your algorithm.
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