Re: Detecting presence and connecting headset when not in pairing mode

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Hi Jon,

On Tue, Apr 29, 2014 at 2:37 PM, Jon Nordby <jon@xxxxxxxxxx> wrote:
>
> On 29 Apr 2014, at 09:56, Luiz Augusto von Dentz <luiz.dentz@xxxxxxxxx> wrote:
>
>> Hi Jon,
>
> Hi Luiz,
>
>>
>> On Mon, Apr 28, 2014 at 11:37 PM, Jon Nordby <jon@xxxxxxxxxx> wrote:
>>> Hi,
>>>
>>> I’m using BlueZ 4.98 with Ubuntu 12.04 on an embedded device.
>>> When I power up a BT headset* (A2DP) in pairing mode, the DBus signal DeviceFound is emitted on /org/bluez/PID/hci0
>>> But, when I power it up in normal modus, I do not see any signals firing on DBus. However, if I use “bt-audio -c MAC” it connects successfully.
>>>
>>> How am I supposed to programatically detect that the headset is present and automatically establish a connection with it?
>>>
>>> * Testing with a Sony DR-BT200 right now.
>>
>> You don't, the headset is to one that should reconnect if it doesn't
>> there might have been some problem when you paired with it.
>
> Ok. Does this require having a bluez agent running in addition to bluetoothd? If so, which should I use on an embedded system (no UI/session)?

Yes, the agent is required for pairing since the user has to
authenticate, you can however automate the process by registering an
agent with NoInputNoOutput (e.g. simple-agent -c NoInputNoOutput) this
will cause just works paring if supported (requires Bluetooth 2.1 >).

-- 
Luiz Augusto von Dentz
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