The error message you're encountering suggests that MATLAB is unable to find the S-function `sfun_time`, which is likely required by the robot simulator block from the Mobile Robotics Training Library. Here are some steps you can take to try and resolve this issue:
1. Verify Installation:
- Ensure that the Mobile Robotics Training Library is correctly installed. You may need to reinstall the library if any components are missing.
2. Check MATLAB Path:
- Make sure that the directory containing the S-function `sfun_time` is included in your MATLAB path. You can add directories to the MATLAB path using the `addpath` function or by navigating to `Home > Set Path` in the MATLAB toolbar.
3. Locate the S-function:
- Search for `sfun_time.m` or `sfun_time.dll` (or `.mexw64` on Windows, `.mexmaci64` on Mac, `.mexa64` on Linux) in your MATLAB installation directory. If it's missing, that could be the cause of the error.
4. Rebuild S-functions:
- If you have access to the source code of the S-function, you might need to recompile it. Use the `mex` command to compile the S-function:
mex sfun_time.c
- Ensure that you have the necessary compilers installed and set up in MATLAB.
5. Consult Documentation:
- Check the documentation for the Mobile Robotics Training Library for any specific setup instructions or dependencies related to S-functions.
6. MATLAB Version Compatibility:
- Ensure that the Mobile Robotics Training Library is compatible with your version of MATLAB. Some libraries may require specific versions of MATLAB or Simulink.
By following these steps, you should be able to identify and resolve the issue with the missing S-function. If you continue to experience problems, please provide more details or specific error messages.
