Hi, Luiz Thank you. It is working now. Best wishes Yunhan On Jul 31, 2017, at 6:57 AM, Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> wrote: Hi Yunhan, On Mon, Jul 31, 2017 at 10:22 AM, Yunhan Wang <yunhanw@xxxxxxxxxx> wrote: Hi, I am doing some experiments to understand Bluez DBUS API using Bluez 5.46, and feel a little bit confused about Gatt Dbus example code and bluetoothctl. First, I do sudo bluetoothd --experimental -d, then I create two virtual bt interfaces and bring up example-gatt-server, then example-gatt-client cannot find any new gatt service. Any idea? You would have to connect so the client could discover the services. Also, I have checked all information under org.bluez using d-feet, the gatt service and characteristics from example-gatt-client have not yet been added. I print all infos under ObjectManager for bluez, and cannot find these services and characteristics. example-gatt-client only discover service over D-Bus, anyway in case you refering to example-gatt-server its services are on the client side, so they won't show on the bluetoothd D-Bus connection in d-feet instead you would have to look at example-gatt-server connection. I also try to use register-service, and register-characteristic for hci0 using bluetoothctl, but I cannot find any added service and characteristics under d-feet and ObjectManager. Any idea? Same thing, they are under bluetoothctl connection not bluetoothd. bluez-5.46$ sudo ./emulator/btvirt -L -l2 Bluetooth emulator ver 5.46 bluez-5.46/test$ sudo ./example-gatt-server Registering GATT application... GetManagedObjects GATT application registered Battery Level drained: 98 Battery Level drained: 96 Battery Level drained: 94 Battery Level drained: 92 Battery Level drained: 90 Battery Level drained: 88 Battery Level drained: 86 Battery Level drained: 84 sudo ./example-gatt-client Getting objects... No Heart Rate Service found example-gatt-client doesnt connect, this is why there is no parameter in the first place, so you would have to connect to the device first then run it. sudo ./client/bluetoothctl [NEW] Controller 00:AA:01:00:00:23 hostname [default] [NEW] Device 00:AA:01:01:00:24 hostname #2 Agent registered [bluetooth]# power on Changing power on succeeded [CHG] Controller 00:AA:01:00:00:23 Powered: yes [bluetooth]# register-service 00001820-0000-1000-8000-00805f9b34fb [NEW] Primary Service /org/bluez/app/service0xd5eac0 00001820-0000-1000-8000-00805f9b34fb Internet Protocol Support [/org/bluez/app/service0xd5eac0] Primary (yes/no): yes register-characteristic 00002a06-0000-1000-8000-00805f9b34fb write-without-response [NEW] Characteristic /org/bluez/app/service0xd5eac0/chrc0xd5f150 00002a06-0000-1000-8000-00805f9b34fb Alert Level [/org/bluez/app/service0xd5eac0/chrc0xd5f150] Enter value: 0x1 [bluetooth]# register-application [CHG] Controller 00:AA:01:00:00:23 UUIDs: 00001801-0000-1000-8000-00805f9b34fb [CHG] Controller 00:AA:01:00:00:23 UUIDs: 00001820-0000-1000-8000-00805f9b34fb [CHG] Controller 00:AA:01:00:00:23 UUIDs: 0000110e-0000-1000-8000-00805f9b34fb [CHG] Controller 00:AA:01:00:00:23 UUIDs: 00001200-0000-1000-8000-00805f9b34fb [CHG] Controller 00:AA:01:00:00:23 UUIDs: 00001800-0000-1000-8000-00805f9b34fb [CHG] Controller 00:AA:01:00:00:23 UUIDs: 0000110c-0000-1000-8000-00805f9b34fb Application registered [bluetooth]# advertise on Advertising object registered Now you would have to select the second controller you have created, scan and connect, that in turn will discover the service above. Btw, I just discover a little problem when the controllers are dual-mode it seems we don't fallback to the second bearer if the first could not be connected, but since you are using single mode only that should work just fine. -- Luiz Augusto von Dentz -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
