Stateflow passing strings as input to graphical functions

Hello,

I want to use Matlab Stateflow to control a large software system and I am using c to interact with this system. Now I wanted to wrap my c functions with graphical functions, which would perfom some additional checks based on information from the Stateflow Chart. To do this, I would need to pass strings to those graphical functions. Unfortunately this is where I got stuck: Every time I try to pass a string to a function, I get the error: "String literal "..." is not allowed in this context." and the simulation fails. I have to admit that my experience with Stateflow is still quite small, so I don't really understand why a string literal would not be allowed there. Some more Information about my case:

• The Datatype of the Input Variable is set to string and the scope is Input.
• The Action Language is C.
• There appear to be no other errors in the small test chart I am using (so without the function or just the argument, everything runs just fine).
• I use Matlab Version R2019a.

Thank you for your help and please excuse any spelling mistakes, english is not my first language.

Answer 1

[Muthukumar Ganesan]

Hi,

Yes, Stateflow doesn't support to pass a string literal directly whereas you can use a local string variable to store the string literal and pass the variable to graphical function.

Hope this helps. Thanks.