S-Function containing C-code file

Hey guys,

I have a question concerning the s-functions, because i have a problem with including a .c file as s-function. I already included .m files without any problems. I took the example "timestwo". I copied the timestwo.c and renamed it to timestwo1.c (also the define function-name). I used the mex command to compile the timestwo1.c which created me a timestwo1.obj in my workspace. I renamed the s-function in the timestwo-simulink example to timestwo1 and tried to run it. But it´s not working. I get the error: Error in S-function 'untitled1/S-Function': S-Function 'timestwo1' does not exist When I try to push the edit button in the s-function, it opens the timestwo1.c file, so it has the connection the the file. Also the model and the file are in the same workspace. Does anyone know an answer to this problem?

Thank You in advance

Answer 1

[Kaustubha Govind]

Did you also re-name the S_FUNCTION_NAME macro in the C-file?

#define S_FUNCTION_NAME timestwo1

Also, note that Simulink is looking for a file with a MEX-extension (eg. mexw64, mexa64, etc.), not an .obj file.