How to fix none-existing path to clock-frequency with raspi()?

Using the Hardware Setup of the Simulink Support Package for Raspberry Pi Hardware, I set up my Raspberry Pi 3 B+ and installed all mentioned packages and librarys.

When I try running the command raspi(), Matlab raises the following error:

Cannot query I2C bus speed.

Caused by:
    Error using matlabshared.internal.ssh2client/execute
    Error executing command "xxd -ps
    /sys/class/i2c-adapter/i2c-1/of_node/clock-frequency".
    Details:

    STDERR: xxd:
    /sys/class/i2c-adapter/i2c-1/of_node/clock-frequency: No such
    file or directory

    STDOUT:

I manually checked and the folder /sys/clss/i2c-adapter/ isn't even existing. Apperently with my Rasperry OS version, this folder doesn't exist anymore, although I2C is enabled as shown below:

    ***@MeinPi:~ $ sudo raspi-config nonint get_i2c
    0

I am running this OS:

PRETTY_NAME="Raspbian GNU/Linux 12 (bookworm)"

NAME="Raspbian GNU/Linux"

VERSION_ID="12"

VERSION="12 (bookworm)"

VERSION_CODENAME=bookworm

ID=raspbian

ID_LIKE=debian

How do I fix this?

[Prasanth Sunkara]

Hi @Florian, Could you please share your MATLAB release version? Is it R2026b?

[Florian]

Hey, my Version is R2025b and I figured out the issue. Apparently, unlike mentioned in the documentation (https://de.mathworks.com/help/simulink/supportpkg/raspberrypi_ug/connect-to-raspberry-pi-hardware-board-in-simulink-online.html) for setting up the Raspberry, it isn’t compatible with the Raspberry OS Versions buster or current version of bookwork. Buster isn’t supported by Raspberry anymore and the necessary packages and libraries cannot be installed via the Hardware setup. Additionally the current bookwork version doesn’t come with the path MATLAB tries to access. Also, I had to install some libraries and packages manually, because the Hardware setup wouldn’t work.