SensorTile.box PRO I2C node disables USB output

[rmarcus1tul]

Test Conditions Hardware

• STEVAL-MKBOXPRO (sensortile_box_pro dts)
• Micro-USB cable

Software

• Zephyr 3.7.0 and 4.0.0
• sensors-on-board sample
• Ubuntu 24.04 and Windows 11 OS
• dfu-util for flashing

Background Using the default configuration for the SensorTile.box PRO with its associated sensors-on-board demo, no USB device is detected. I'm testing on Ubuntu but also confirmed USB virtual COM is disabled when attempting on Windows.

I traced this to some conflict between the USB driver and the I2C sensors. Adding an overlay file with the 3 sensors on I2C1 disabled re-enables USB:

&{/soc/i2c@40005400/lps22df@5d} {
    status = "disabled";
};

&{/soc/i2c@40005400/lis2mdl@1e} {
    status = "disabled";
};

&{/soc/i2c@40005400/stts22h@38} {
    status = "disabled";
};

No errors or warnings are flagged when building and there is no indication of a conflict. I tried to get UART output using a JLink Base with VCOM enabled, and following the instructions in the README, but I could not get an output even on a functional build with the I2C sensors disabled. I then attempted to get outputs over RTT but CONFIG_USE_SEGGER_RTT=y produces compilation errors.

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