/e/OS is a complete, fully “deGoogled”, mobile ecosystem
The firmware reads the digital inputs and the quadrature signals from the rotary encoders, debounces everything, and presents itself to the host as a standard USB HID gamepad. This means the cabinet works with any operating system without custom drivers.
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memcpy(&creds, CMSG_DATA(&aux), sizeof(creds));
I also expose the number of references the same way,