To extract the MIDI data correctly from the “mxarray” received by the “midireceive()” function in Simulink, you can use the following steps:
- Add a MATLAB Function block to your Simulink model.
- Inside the MATLAB Function block, use the “coder.extrinsic()” function to declare the “midireceive()” function as an extrinsic function.
- To receive MIDI data from the MIDI controller, use the “midireceive()” function.
- Use the “cell()” function to transform the “mxarray” into a cell array.
- Loop over the elements of the cell array and extract the MIDI message using the “midimsg()” function.
- To detect whether a MIDI message is a "NoteOn" or "NoteOff" message, look at the message's status byte.
- Similarly you can extract other details like “channel”, “note”,” velocity” etc.
For more details you can go through the following Documentations.
Documentation for “midireceive”.
Documentation for “mxArrays”.
Documentation for Cell Arrays.
