Writing S-Functions

S-Function Module Names for Real-Time Workshop Builds

If your S-function is built with multiple modules, you must provide the build process names of additional modules. You can do this through the Real-Time Workshop template makefile technology, or more conveniently by using the set_param MATLAB command. For example, if your S-function is built with multiple modules, as in

• mex sfun_main.c sfun_module1.c sfun_module2.c
  

specify the names of the modules without the extension, using the command

• set_param(sfun_block,'SFunctionModules','sfun_module1 sfun_module2')
  

The parameter can also be a variable, as in

• modules = 'sfun_module1 sfun_module2'
  set_param(sfun_block,'SFunctionModules','modules')
  

or a string to be evaluated (this is needed when the modules are valid identifiers).

• set_param(sfun_block,'SFunctionModules','''sfun_module1 sfun_module2''')
  

Noninlined S-Functions

Writing Wrapper S-Functions