Simulink raspberry pi keyboard read

Hello all,

It seems like there is not a keyboard read simulink block provided by Mathworks for the Raspberry pi is that correct?

What would be the easiest way to get characters from a connected usb keyboard into a simulink program running on the pi?

Would a custom device driver be the best way to achomplish that?

Is there anything preventing a custom device driver from working?

Could someone point me at the best example to get keyboard input working?

Thank you very much,

Matt

Answer 1

[Pratyush]

Hello Matt,

To get keyboard input into a Simulink program running on a Raspberry Pi, you can use these methods:

• Use a script (e.g., Python) to capture keyboard inputs and write them to a file or a server, which Simulink can access.
• Write an S-Function in MATLAB or C/C++ that reads keyboard events using Linux's input event interface.
• Use a MATLAB Function block to execute Python code that listens for keyboard inputs.

Creating a custom device driver is generally not necessary since the Linux kernel already supports USB keyboards. The main challenges include ensuring real-time performance and integrating external scripts with Simulink. Starting with a Python script to capture keyboard inputs and integrating it into Simulink through a MATLAB Function block or file polling is usually the easiest approach.