MATLAB Answers

Jon
1

Character Variables in Simulink

Asked by Jon
on 3 Nov 2011
Latest activity Edited by John Kelly on 27 Feb 2015
I think this should be easy, but it isn't for some reason. What am I missing?
I want to pass a character variable from one block to the next.
Code:
busname.busobject = 'characterVariable';
I've also tried declaring 'char' as extrinsic and using:
busname.busobject = char('characterVariable');
but I keep getting this error:
Expression 'busname' for type of data 'busname' (#71) did not evaluate to a valid type.
Error evaluating properties of Simulink.Bus object 'busname' in workspace 'base' (used by block 'SimulinkModelName/MATLAB Function Block Name/ SFunction ').
DataType 'char' did not resolve to a valid data type.
Any help is appreciated.

  0 Comments

Sign in to comment.

2 Answers

Answer by Kaustubha Govind on 3 Nov 2011
Edited by John Kelly on 27 Feb 2015
 Accepted Answer

Characters are not valid Simulink signal types - only numeric, fixed-point, enumerated and bus types (with elements of supported type) are supported. See Data Types Supported by Simulink.

  0 Comments

Sign in to comment.


Answer by Seth Popinchalk on 22 Nov 2011

While characters are not a type you can use on a signal line, you can cast them to an Int8 and then work with that. No blocks in Simulink support characters, so I'm guessing you are using S-functions. If that is the case, you can always cast the input signals back to char and work with them inside the S-functions without problem.

  0 Comments

Sign in to comment.