My Dome driver has its own integrated hardware interface operating directly through RPi GPIO pins. Seems my decision to do this is at odds with the recent encapsulation of serial/tcp connection logic. At the moment I get, as expected: Failed to connect to port (/dev/ttyUSB0). Error: Port failure Error: No such file or directory. Check if device is connected to this port.

I have tried a few things, unsuccessfully to inhibit the connection logic. I am not very confident I have source that matches the current RPi build.

Is there a way I can override the connection logic?

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