ubuntu-phone team mailing list archive

[Michael Zanetti <michael.zanetti@xxxxxxxxxxxxx>]

On 04.05.2016 12:16, Konrad Zapalowicz wrote:
> On 05/04, Matthijs wrote:
>> Hi all,
>>
>> My apologies if this has been asked before, but I couldn't find amy info on
>> it, so here it goes:
> 
> No worries :)
> 
>> I'm making an app for heartrate measurement with a bluetooth le sensor. I've
>> been using the Qt bt framework and the app works perfectly on amd64
>> platform, but qt bluetooth is not part of the armhf click chroot. As I
>> understand I should be using bluez rather than Qt for bluetooth, but I just
>> can not get the app to compile (headers of libbluetooth installed, but
>> cannot link against lbluetooth).
> 
> Are you sure that this library is installed? I ask because you mention
> only the headers.

Using QtBluetooth is fine, however, it is indeed not seeded in the
image. For now you can ship those libs yourself in your click package,
but we really should start shipping them in the image.

Pat, Konrad, what's your opinions on that?

Also note that right now you will only be able to publish any Bluetooth
enabled app in the OpenStore. There are apparmor policies missing for
Bluetooth.

Again, Pat, Konrad, what's the ETA on that? I reported some bugs already
for this with information on what would be required. Think we could put
that on the roadmap for the near future now?

> 
>> Is there any information available on the steps to take to access a bt
>> device on ubuntu phone, using C++?
> 
> As for the BlueZ you must know that the communication is realized using
> the DBus interfaces. The BlueZ is exposing an API that allows the
> clients to pair, connect, etc... You may try to read the Ubuntu System
> Settings sources Bluetooth plugin [1] to get the understanding how this
> is done.

I would not recommend to use the D-Bus interface directly in client
apps, instead, go through QtBluetooth as far as it's possible.

Here you can find some apps that make use of Bluetooth:

* Using QBluetoothSocket for an RFCOMM connection to a smartwatch
https://launchpad.net/rockwork

* Using QBluetoothDeviceDiscoveryModel and QBluetoothFileTransfer to
find nearby devices and send files to them.
http://bazaar.launchpad.net/~mzanetti/+junk/ubtd/files/head:/shareplugin/

Please let us know about your use cases to collect some experience on
what apps would want to do with Bluetooth.

Cheers,
Michael

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