example-advertisementHello Oliver,
On 14 April 2017 at 11:03, Olivier MARTIN <olivier@xxxxxxxxxxxx> wrote:
> Thanks for replying my message Barry,
>
> Sorry, I forgot to mention but I start Bluez daemon with `sudo
> ./src/bluetoothd -E -n -d` (after stopping the bluetooth service). So I
> already run it with sudo and experimental option.
>
> I am not sure to understand what you mean by "this kind of error message".
> Because I do not see any error message in the log I provided.
OK, that was bad on my part. I read it as complaining that there were
too many advertisements. Looking again that wasn't what it was say.
Apologies.
>
> Any other idea?
I am by Linux Single Board Computers (SBC) today so I'm able to run
what you are running and can show you what I'm seeing. I'll focus on
example-advertisement first as example-gatt-server doesn't change the
advertisements.
I've started the BlueZ daemon with "./src/bluetoothd -E -n -d"
In another shell when I start "./example-advertisement" I see the
following in the output:
bluetoothd[2325]: src/adapter.c:property_set_mode() sending Set
Powered command for index 0
bluetoothd[2325]: src/adapter.c:property_set_mode_complete() Success (0x00)
bluetoothd[2325]: src/adapter.c:new_settings_callback() Settings: 0x00000ad1
bluetoothd[2325]: src/adapter.c:settings_changed() Changed settings: 0x00000001
bluetoothd[2325]: src/adapter.c:adapter_start() adapter
/org/bluez/hci0 has been enabled
bluetoothd[2325]: src/adapter.c:trigger_passive_scanning()
bluetoothd[2325]: src/advertising.c:register_advertisement()
RegisterAdvertisement
bluetoothd[2325]: src/advertising.c:client_create() Adding proxy for
/org/bluez/example/advertisement0
bluetoothd[2325]: src/advertising.c:register_advertisement()
Registered advertisement at path /org/bluez/example/advertisement0
bluetoothd[2325]: src/advertising.c:parse_service_uuids() Adding
ServiceUUID: 180D
bluetoothd[2325]: src/advertising.c:parse_service_uuids() Adding
ServiceUUID: 180F
bluetoothd[2325]: src/advertising.c:parse_manufacturer_data() Adding
ManufacturerData for ffff
bluetoothd[2325]: src/advertising.c:parse_service_data() Adding
ServiceData for 9999
bluetoothd[2325]: src/advertising.c:refresh_advertisement() Refreshing
advertisement: /org/bluez/example/advertisement0
bluetoothd[2325]: src/advertising.c:add_adv_callback() Advertisement
registered: /org/bluez/example/advertisement0
On a second SBC, at the command line I run "bluetoothctl" and do "scan
on". Once my first SBC is found I do "scan off". I then do "info
B8:27:EB:22:57:E0" (this is the address of the first SBC) which gives
the following output:
[bluetooth]# info B8:27:EB:22:57:E0
Device B8:27:EB:22:57:E0
Alias: B8-27-EB-22-57-E0
Paired: no
Trusted: no
Blocked: no
Connected: no
LegacyPairing: no
UUID: Heart Rate (0000180d-0000-1000-8000-00805f9b34fb)
UUID: Battery Service (0000180f-0000-1000-8000-00805f9b34fb)
ManufacturerData Key: 0xffff
ManufacturerData Value: 0x00
ManufacturerData Value: 0x01
ManufacturerData Value: 0x02
ManufacturerData Value: 0x03
ManufacturerData Value: 0x04
ServiceData Key: 00009999-0000-1000-8000-00805f9b34fb
ServiceData Value: 0x00
ServiceData Value: 0x01
ServiceData Value: 0x02
ServiceData Value: 0x03
ServiceData Value: 0x04
I've also done a scan from my Android phone (using the Nordic nRF
Connect app) and can see the advertisements also (just hard to share
that information on here).
Does that help?
>
>
> On 13.04.2017 19:59, Barry Byford wrote:
>>
>> Hello Olivier,
>>
>>
>> On 13 April 2017 at 12:14, Olivier MARTIN <olivier@xxxxxxxxxxxx> wrote:
>>>
>>> Hi all,
>>> I am having issue to advertise/export GATT services exposed through DBus
>>> API. I tried `./test/example-gatt-server`. And I also tried to merge
>>> `./test/example-advertisement` into `./test/example-gatt-server`. But in
>>> both cases I only see the two compulsory GATT services:
>>> - Generic Access Service (0x1800)
>>> - Generic Attribute Service (0x1801)
>>>
>>> I am using Bluez v5.44. And I also tried Bluez v5.37.
>>>
>>> GATT Services seem to be discovered by Bluez (note: I added additional
>>> debug
>>> statement all prefixed with '#'):
>>>
>>> bluetoothd[16877]: src/gatt-database.c:manager_register_app() #
>>> manager_register_app
>>> bluetoothd[16877]: src/gatt-database.c:create_app() # create_app
>>> bluetoothd[16877]: src/gatt-database.c:manager_register_app() Registering
>>> application: :1.404:/
>>> bluetoothd[16877]: src/advertising.c:register_advertisement()
>>> RegisterAdvertisement
>>> bluetoothd[16877]: src/advertising.c:client_create() Adding proxy for
>>> /org/bluez/example/advertisement0
>>> bluetoothd[16877]: src/advertising.c:register_advertisement() Registered
>>> advertisement at path /org/bluez/example/advertisement0
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service0/char2, iface: org.bluez.GattCharacteristic1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2/char0/desc0, iface: org.bluez.GattDescriptor1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2/char2/desc3, iface: org.bluez.GattDescriptor1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2/char2, iface: org.bluez.GattCharacteristic1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service1/char0, iface: org.bluez.GattCharacteristic1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2/char1, iface: org.bluez.GattCharacteristic1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service0/char1, iface: org.bluez.GattCharacteristic1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2/char1/desc3, iface: org.bluez.GattDescriptor1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2/char1/desc2, iface: org.bluez.GattDescriptor1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service0/char0, iface: org.bluez.GattCharacteristic1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2, iface: org.bluez.GattService1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service1, iface: org.bluez.GattService1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service0, iface: org.bluez.GattService1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2/char0/desc1, iface: org.bluez.GattDescriptor1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2/char2/desc2, iface: org.bluez.GattDescriptor1
>>> bluetoothd[16877]: src/gatt-database.c:proxy_added_cb() Object received:
>>> /org/bluez/example/service2/char0, iface: org.bluez.GattCharacteristic1
>>> bluetoothd[16877]: src/gatt-database.c:client_ready_cb() #
>>> client_ready_cb
>>> bluetoothd[16877]: src/gatt-database.c:create_service() # create_service
>>> from /org/bluez/example/service2
>>> bluetoothd[16877]: src/gatt-database.c:create_service() # create_service
>>> from /org/bluez/example/service1
>>> bluetoothd[16877]: src/gatt-database.c:create_service() # create_service
>>> from /org/bluez/example/service0
>>> bluetoothd[16877]: src/gatt-database.c:database_add_app() #
>>> database_add_app
>>> bluetoothd[16877]: src/gatt-database.c:database_add_service() #
>>> database_add_service
>>> bluetoothd[16877]: src/gatt-database.c:cep_write_cb() Stored CEP value in
>>> the database
>>> bluetoothd[16877]: src/gatt-database.c:database_add_cep() Created CEP
>>> entry
>>> for characteristic
>>> bluetoothd[16877]: src/gatt-database.c:cep_write_cb() Stored CEP value in
>>> the database
>>> bluetoothd[16877]: src/gatt-database.c:database_add_cep() Created CEP
>>> entry
>>> for characteristic
>>> bluetoothd[16877]: src/gatt-database.c:cep_write_cb() Stored CEP value in
>>> the database
>>> bluetoothd[16877]: src/gatt-database.c:database_add_cep() Created CEP
>>> entry
>>> for characteristic
>>> bluetoothd[16877]: src/gatt-database.c:gatt_db_service_added() #
>>> gatt_db_service_added: GATT Service added to local database
>>> bluetoothd[16877]: src/gatt-database.c:database_add_service() #
>>> database_add_service
>>> bluetoothd[16877]: src/gatt-database.c:database_add_ccc() Created CCC
>>> entry
>>> for characteristic
>>> bluetoothd[16877]: src/gatt-database.c:gatt_db_service_added() #
>>> gatt_db_service_added: GATT Service added to local database
>>> bluetoothd[16877]: src/gatt-database.c:database_add_service() #
>>> database_add_service
>>> bluetoothd[16877]: src/gatt-database.c:database_add_ccc() Created CCC
>>> entry
>>> for characteristic
>>> bluetoothd[16877]: src/gatt-database.c:gatt_db_service_added() #
>>> gatt_db_service_added: GATT Service added to local database
>>> bluetoothd[16877]: src/gatt-database.c:client_ready_cb() GATT application
>>> registered: :1.404:/
>>> bluetoothd[16877]: src/advertising.c:parse_service_uuids() Adding
>>> ServiceUUID: 180D
>>> bluetoothd[16877]: src/advertising.c:parse_service_uuids() Adding
>>> ServiceUUID: 180F
>>> bluetoothd[16877]: src/advertising.c:parse_manufacturer_data() Adding
>>> ManufacturerData for ffff
>>> bluetoothd[16877]: src/advertising.c:parse_service_data() Adding
>>> ServiceData
>>> for 9999
>>> bluetoothd[16877]: src/advertising.c:refresh_advertisement() Refreshing
>>> advertisement: /org/bluez/example/advertisement0
>>> bluetoothd[16877]: src/advertising.c:add_adv_callback() Advertisement
>>> registered: /org/bluez/example/advertisement0
>>>
>>> I start `./test/example-gatt-server` as a normal user. But Bluez does not
>>> seem to have any permission issue with it.
>>
>>
>> Building from source I've seen something similar if I've used sudo for the
>> make.
>>
>> To compile and install I use sudo for the install only:
>>
>> make -j 4 && sudo make install
>>
>>
>>
>>>
>>> I am using 'BLE scanner' on Android to discover the GATT services. But I
>>> think the problem is coming from Bluez. When I connect the Android device
>>> to
>>> Bluez, I can see this log:
>>>
>>> bluetoothd[16877]: src/adapter.c:connected_callback() hci0 device
>>> 98:D6:F7:31:7B:0D connected eir_len 14
>>> bluetoothd[16877]: src/gatt-database.c:connect_cb() New incoming BR/EDR
>>> ATT
>>> connection
>>> bluetoothd[16877]: attrib/gattrib.c:g_attrib_ref() 0x98cd908:
>>> g_attrib_ref=1
>>> bluetoothd[16877]: src/device.c:load_gatt_db() # load_gatt_db: Restoring
>>> 98:D6:F7:31:7B:0D gatt database from file
>>> '/var/lib/bluetooth/5C:F3:70:6A:D9:3C/cache/98:D6:F7:31:7B:0D'
>>> bluetoothd[16877]: src/device.c:load_gatt_db_impl() # load_gatt_db_impl
>>> bluetoothd[16877]: src/device.c:load_service() # load_service: loading
>>> service: 0x0001, end: 0x0005, uuid: 00001801-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:load_service() # load_service: loading
>>> service: 0x0014, end: 0xffff, uuid: 00001800-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:load_chrc() loading characteristic
>>> handle:
>>> 0x0002, value handle: 0x0003, properties 0x0020 uuid:
>>> 00002a05-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:load_chrc() loading characteristic
>>> handle:
>>> 0x0015, value handle: 0x0016, properties 0x0002 uuid:
>>> 00002a00-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:load_chrc() loading characteristic
>>> handle:
>>> 0x0017, value handle: 0x0018, properties 0x0002 uuid:
>>> 00002a01-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:load_gatt_db() List GATT Primaries before
>>> being free:
>>> bluetoothd[16877]: src/device.c:print_primary() - Primary UUID:
>>> 00001801-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:print_primary() - Primary UUID:
>>> 00001800-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:add_primary() # add_primary
>>> bluetoothd[16877]: src/device.c:add_primary() # add_primary
>>> bluetoothd[16877]: profiles/gap/gas.c:gap_accept() GAP profile accept
>>> (98:D6:F7:31:7B:0D)
>>> bluetoothd[16877]: src/service.c:change_state() 0x98c98e0: device
>>> 98:D6:F7:31:7B:0D profile gap-profile state changed: disconnected ->
>>> connected (0)
>>> bluetoothd[16877]: src/gatt-client.c:btd_gatt_client_connected() Device
>>> connected.
>>> bluetoothd[16877]: src/device.c:gatt_server_init() # gatt_server_init
>>> bluetoothd[16877]: src/device.c:gatt_debug() Primary services found: 2
>>> bluetoothd[16877]: src/device.c:gatt_debug() start: 0x0001, end: 0x0005,
>>> uuid: 00001801-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:gatt_debug() start: 0x0014, end: 0xffff,
>>> uuid: 00001800-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:gatt_debug() Registered handler for
>>> "Service
>>> Changed": 0
>>> bluetoothd[16877]: src/device.c:gatt_client_ready_cb() status: success,
>>> error: 0
>>> bluetoothd[16877]: src/device.c:register_gatt_services() #
>>> register_gatt_services
>>> bluetoothd[16877]: src/device.c:add_primary() # add_primary
>>> bluetoothd[16877]: src/device.c:add_primary() # add_primary
>>> bluetoothd[16877]: src/device.c:add_gatt_service() # add_gatt_service:
>>> UUID:00001801-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/gatt-client.c:btd_gatt_client_ready() GATT client
>>> ready
>>> bluetoothd[16877]: src/gatt-client.c:create_services() Exporting objects
>>> for
>>> GATT services: 98:D6:F7:31:7B:0D
>>> bluetoothd[16877]: src/gatt-client.c:service_create() Exported GATT
>>> service:
>>> /org/bluez/hci0/dev_98_D6_F7_31_7B_0D/service0001
>>> bluetoothd[16877]: src/gatt-client.c:characteristic_create() Exported
>>> GATT
>>> characteristic:
>>> /org/bluez/hci0/dev_98_D6_F7_31_7B_0D/service0001/char0002
>>> bluetoothd[16877]: src/device.c:device_svc_resolved()
>>> /org/bluez/hci0/dev_98_D6_F7_31_7B_0D err 0
>>> bluetoothd[16877]: src/device.c:store_gatt_db() # store_gatt_db
>>> bluetoothd[16877]: src/device.c:store_service() # store_service
>>> bluetoothd[16877]: src/device.c:store_service() # store_service
>>> bluetoothd[16877]: profiles/gap/gas.c:read_device_name_cb() GAP Device
>>> Name:
>>> Nexus 4
>>> bluetoothd[16877]: profiles/gap/gas.c:read_appearance_cb() GAP
>>> Appearance:
>>> 0x0000
>>>
>>> I also reduced DBus 'TestAdvertisement' interface to only expose one GATT
>>> Service as many BLE adapter got a limitation in the size of the
>>> advertisement packet:
>>> class TestAdvertisement(Advertisement):
>>>
>>> def __init__(self, bus, index):
>>> Advertisement.__init__(self, bus, index, 'peripheral')
>>> #self.add_service_uuid('180D') # HeartRate
>>> self.add_service_uuid('180F') # Battery
>>> #self.add_manufacturer_data(0xffff, [0x00, 0x01, 0x02, 0x03,
>>> 0x04])
>>> #self.add_service_data('9999', [0x00, 0x01, 0x02, 0x03, 0x04])
>>> self.include_tx_power = True
>>>
>>> My concern is mainly these lines:
>>>
>>> bluetoothd[16877]: src/device.c:gatt_debug() Primary services found: 2
>>> bluetoothd[16877]: src/device.c:gatt_debug() start: 0x0001, end: 0x0005,
>>> uuid: 00001801-0000-1000-8000-00805f9b34fb
>>> bluetoothd[16877]: src/device.c:gatt_debug() start: 0x0014, end: 0xffff,
>>> uuid: 00001800-0000-1000-8000-00805f9b34fb
>>>
>>
>> I've seen this kind of error message when I've had a failure of a
>> previous script and the Bluetooth daemon is in some unknown state. At
>> this point it is worth restarting the bluetooth service with:
>> sudo service bluetooth restart
>>
>> You will see in the advertising DBus API documentation that it is
>> still in experimental mode in 5.44.
>>
>> https://git.kernel.org/pub/scm/bluetooth/bluez.git/tree/doc/advertising-api.txt#n78
>>
>> This means that you need to make sure bluetoothd is started in
>> experimental mode. Have you done this?
>> You can check with "sudo service bluetooth status"
>>
>> Experimental can be switched on by default in the bluetooth.service file
>>
>> Edit /lib/systemd/system/bluetooth.service file to add --experimental flag
>> e.g:
>>
>> sudo sed -i '/^ExecStart.*bluetoothd\s*$/ s/$/ --experimental/'
>> /lib/systemd/system/bluetooth.service
>>
>>
>>
>>
>>> I have not found the code that export GATT Services from GATT Database to
>>> the BLE central.
>>>
>>> From my search on Internet, it looks I am not the only one who is having
>>> this issue
>>> I am happy to share/test anything that could help to make some progress.
>>>
>>> Thanks,
>>> Olivier
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>
>
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