I am building an application which needs to manage Bluetooth LE devices such as Heart Rate monitors, cadence monitors, etc...
My development is based in the new dbus API for GATT introduced in Bluez in version 5.x.This feature is still under the experimental flag.
The problem is that when running 'bluetoothd' with -E (experimental flat) it also starts other experimenta services as: heartrate, cyclingspeed etc...
In order to avoid conflicts if a device is already used by a dbus service it won't show up in the other services.
My device exports a Cycling Speed and Cadence service.
[RPM]# info
Device C5:62:A1:0A:E6:ED
Name: RPM
Alias: RPM
Appearance: 0x0485
Paired: yes
Trusted: yes
Blocked: no
Connected: yes
LegacyPairing: no
UUID: Generic Access Profile (00001800-0000-1000-8000-00805f9b34fb)
UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
UUID: Device Information (0000180a-0000-1000-8000-00805f9b34fb)
UUID: Battery Service (0000180f-0000-1000-8000-00805f9b34fb)
UUID: Cycling Speed and Cadence (00001816-0000-1000-8000-00805f9b34fb)
UUID: Vendor specific (a026ee01-0a7d-4ab3-97fa-f1500f9feb8b)
UUID: Vendor specific (a026ee03-0a7d-4ab3-97fa-f1500f9feb8b)
[RPM]#
When list attributes to be used by GATT Service the service 0x1816 (RPM) doesn't show up:
[RPM]# list-attributes C5:62:A1:0A:E6:ED
Service /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service001a Battery Service (Primary)
Characteristic /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service001a/char001b Battery Level
Descriptor /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service001a/char001b/desc001d Client Characteristic Configuration
Service /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service0025 Vendor specific (Primary)
Characteristic /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service0025/char0026 Vendor specific
Descriptor /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service0025/char0026/desc0028 Client Characteristic Configuration
Characteristic /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service0025/char0029 Vendor specific
Descriptor /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service0025/char0029/desc002b Client Characteristic Configuration
Service /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service002c Vendor specific (Primary)
Characteristic /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service002c/char002d Vendor specific
Descriptor /org/bluez/hci0/dev_C5_62_A1_0A_E6_ED/service002c/char002d/desc002f Client Characteristic Configuration
That is because is taken by the experimental cyclingspeed bluez service.
Remove from Makefile.plugins the conflicting services and recompile again.
linux-bluetooth mailing list issue: http://thread.gmane.org/gmane.linux.bluez.kernel/61649/focus=61652
This repository has been duplicated from: https://git.kernel.org/pub/scm/bluetooth/bluez.git
git clone --bare https://git.kernel.org/pub/scm/bluetooth/bluez.git orig-repo
cd orig-repo
git push --mirror https://github.com/jomarmar/bluez-experimental.git
cd ..
rm -rf orig-repo
git clone https://github.com/jomarmar/bluez-experimental.git
Then I have change remotes to be able to update from the original repository and push to my own copy of it.
git remote set-url origin https://git.kernel.org/pub/scm/bluetooth/bluez.git
git remote set-url --push origin https://github.com/jomarmar/bluez-experimental.git
See README. Anyway:
./bootstrap
./configure --enable-experimental --enable-library
make
Before install (make install):
- Stop bluetoothd:
systemctl stop bluetooth
systemctl disable bluetooth
- Remove previously installed bluez (if already installed):
i.e. (arch linux)
pacman -Rdd bluez
After install:
- Edit
/usr/lib/systemd/system/bluetooth.serviceto add-Eexperimental flag
ExecStart=/usr/local/libexec/bluetooth/bluetoothd -E
- Start and enable service
systemctl enable bluetooth
systemctl start bluetooth