Did you search the forums? I’m browsing them myself as I get familiar with openHAB and I came across a post with similar issue to yours: Port dev/ttyAMA0 does not exist - #17 by SebSch
Hope it helps
Did you search the forums? I’m browsing them myself as I get familiar with openHAB and I came across a post with similar issue to yours: Port dev/ttyAMA0 does not exist - #17 by SebSch
Hope it helps