MATLAB: How to define a structure variable in a block using Simulink 7.2 (R2008b)

Question

I want to know if I can define a structure variable inside a block in Simulink and use the same for code generation.

Answer 1

In order for you to use a structure type object in Simulink, you would have to first create a Simulink.Signal object first:

 

mysig=Simulink.Signal

and then change the datatype of the signal to the StructType that you have defined as following:

mysig.DataType='s'

Please also note that the following limitations of StructType :

1. Simulink.Parameter does not support StructType

2. Only user-written S-functions can handle signals of type StructType whereas regular Simulink blocks like a Gain block does not support StructType.

Please look at the example of using using custom data type in C MEX S-functions in the link below

https://www.mathworks.com/help/simulink/sfg/c-mex-s-function-examples.html

Also refer the following documentation for more on registering custom data types using the macro ssRegisterTypeFromNamedObject:

http://www.mathworks.com/access/helpdesk/help/toolbox/simulink/sfg/ssregistertypefromnamedobject.html