sihui
(SiHui)
11
Check like @kvolden suggested via karaf if the serial transport is active:
196 │ Active │ 80 │ 3.12.0.OH │ nrjavaserial
Also make sure you are using the correct serial port:
dmesg | grep tty
If both does not help clear tmp and cache and restart openHAB (serial transport needs to be installed again):