At this time, the answer to the question is that MATLAB Raspberry Pi commands are not compatible for use inside the MATLAB Function block in Simulink. During Normal mode simulation, the APIs are trying to generate the corresponding C code, which is not supported as of today for MATLAB API for Raspberry Pi.
A workaround to this question is to make use of a custom Simulink block based on System Objects as follows:
1) Create a new Simulink System Object script as below:
2) Set the simulation mode to “Interpreted Execution as shown below:
3) Add initialization tasks in “setupImpl” method. Example: Create a raspi object.
4) Add periodic code in “stepImpl” method. Example: Reading the status of GPIO pin using the raspi object created in setup method.
5) Save the script.
6) Create a Simulink block using Simulink Library Browser -> Simulink -> User Defined Functions -> MATLAB System. In the MATLAB System block, point to the created system object.
7) Try running the model in Normal mode Simulation mode.
For additional information about how to create Simulink blocks using system objects, please visit the following documentation page:
