Bluetooth subsystem = Building = Build samples $ make -C samples/bluetooth/ = Bluetooth Sample application = Host Bluetooth controller is connected to the second qemu serial line through a UNIX socket (qemu option -serial unix:/tmp/bt-server-bredr). This option is already added to qemu through QEMU_EXTRA_FLAGS in Makefile. On the host side BlueZ allows to "connect" Bluetooth controller through a so-called user channel. Use the btproxy tool for that: $ sudo tools/btproxy -u Listening on /tmp/bt-server-bredr Note that before calling btproxy make sure that Bluetooth controller is down. Now running qemu result connecting second serial line to 'bt-server-bredr' UNIX socket. When Bluetooth (CONFIG_BLUETOOTH) and Bluetooth HCI UART driver (CONFIG_BLUETOOTH_UART) are enabled, Bluetooth driver registers to the system. From now on Bluetooth might be used by the application. To run application in the qemu run: $ make qemu = Bluetooth sanity check = There is smoke test application in nanokernel and microkernel test directories which gets run in sanity check script: $ scripts/sanity_chk/sanity_chk [-P ] For quick regression test use bt_regression, it only check Bluetooth test $ samples/bluetooth/bt_regression.sh