Excellent step by step tutorial - it works as described - many thanks.
This works with the TI development board LAUNCHXL-CC1352P-2. Firmware as reported by zigbee2mqtt: zStack3x0 revision: 20191106
1st serial port /dev/ttyACM0 is correct (this device reports 2 serial ports over USB).
You can skip after step 1 in āopenHAB Configurationā (as transformations are no longer necessary). Keep on reading for thing and item configuration.