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: Etan Kissling <email@hidden>
- Date: Wed, 05 Sep 2012 12:02:54 +0000
- Thread-topic: Connecting to a known BT address with BLE
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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