Hello Edward, On Monday, 25 February 2019 09:04:17 CET Edward Jo wrote: > Hi, > > I use CSR chip that support dual mode as LE mode by setting > 'ControllerMode' in main.conf to 'le'. I'd like to use LE only chip > which does not have BR/EDR. > > Does BlueZ support the LE only controller which does not have BR/EDR? Yes it does (I'm using it with nRF52 based controllers running either Apache Mynew or Zephyr). Also, starting 5.44 it also supports LE-only controllers that come without public address - bluetoothd will assign static random address in such case. -- pozdrawiam Szymon Janc