just start to use openhabian and you get the option to configure razberry via a menu. btw… there is not need to change setenv in /usr/share/openhab2/runtime/bin anymore… just configure the port via the menu in openhabian or do it manually via sudo nano /etc/default/openhab2
e.q. EXTRA_JAVA_OPTS=" -Dgnu.io.rxtx.SerialPorts=/dev/ttyAMA0:/dev/ttyUSB0"
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