S-Function for reading joystick values on Simulink

S-Function build using Windows JOYINFOEX (Winmm.lib). This S-Function supports Rapid Accelerator. Currently outputs 4 axis and 12 buttons.

Enhanced S-Function for Reading Joystick Values in Simulink

This S-Function enables high-performance joystick input within Simulink models, particularly those utilizing Rapid Acceleration for significant speed improvements.

Key Features:

• Rapid Acceleration Support: Overcomes limitations of the standard Simulink joystick block.
• Enhanced Axis and Button Input: Leverages the Windows JOYINFOEX function from the Winmm library for extended joystick capabilities compared to the original JOYINFO-based version.

Motivation:

Developed to address the lack of Rapid Acceleration compatibility in the default Simulink joystick block, crucial for optimizing large-scale flight dynamics simulations.

Installation and Usage:

1. Obtain WinMM.lib: Install the Windows SDK and locate WinMM.lib within the appropriate CPU architecture folder (C:\Program Files (x86)\Windows Kits\10\Lib\10.0.26100.0\um\[architecture]).
2. Copy WinMM.lib: Place WinMM.lib in the same directory as the downloaded sfun_joyinfoex.c file.
3. Compile S-Function (Requires MinGW64 Compiler) on MATLAB command line: mex sfun_joyinfoex.c -lwinmm
4. Use in Simulink: Open and run joyinfoex_demo.slx in Rapid Accelerator Mode to test the compiled S-Function.

Credits:

Original S-Function concept by Per Hillerborg. This enhanced version includes modifications to support additional joystick axes and buttons, as well as overall S-Function structure improvements.