Re: Connecting to a known BT address with BLE
Re: Connecting to a known BT address with BLE
- Subject: Re: Connecting to a known BT address with BLE
- From: Jimmy Adler <email@hidden>
- Date: Wed, 05 Sep 2012 15:11:09 +0200
Hi Etan,
thanks for the reply, even if it wasn't the reply I was hoping for!
Is it possible to retrieve the address in some way after connecting
to a peripheral? In that case I could connect to the device with the
best signal strengt, retrieve the address and then compare it to
the scanned address (that I get from the camera), if they don't match
I could then connect to the next device in the list until I get a match.
Br,
Jimmy
On Sep 5, 2012, at 1:54 PM, Etan Kissling wrote:
> Jimmy,
>
> the UUID is not dependent of the BdAddr and is generated only when
> you connect to the device for the first time. It is also different when you
> connect from a different iPhone.
>
> The reason for this seems to be that when you have a bond, and the
> device address changes, that then the UUID should stay the same,
> allowing you to connect to the known device again.
>
> Connecting to a device by BdAddr is not currently supported by the
> CoreBluetooth framework API. One solution would be to broadcast
> your BdAddr in your Advertising packets, and then use the scanning
> facilities to detect your device. However, it is rather a hacky solution.
> Please note that only a limited amount of data can be stored in
> advertising data (should be around 31 bytes with AD_TYPE headers).
>
> Etan
>
> On 05.09.2012, at 00:49, Jimmy Adler <email@hidden> wrote:
>
>> Hi,
>>
>> I was wondering how to go about connecting (or attempt to
>> connect) to a BLE device that I know the address to.
>>
>> It seems I should do
>> [centralManager connectPeripheral:peripheral options:nil]
>> with a peripheral that I construct myself, but that is not legal
>> since all the properties in the object are readonly.
>>
>> Is there any way of doing this?
>>
>> I have tried scanning for my device and printing the resulting
>> UUID for the peripheral, but that does not match with the given
>> address of the device. (the address is printed on the device
>> and scanned using barcode scanner to initiate pairing).
>>
>> Should I not receive the correct address when printing the UUID
>> of the peripheral received in "didDiscoverPeripheral"?
>>
>> Br,
>>
>> Jimmy
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