Re: [Bluetooth Low Energy] Pairing and writing characteristic property issue

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Hi,

On Fri, Sep 13, 2013, Johan Hedberg wrote:
> On Fri, Sep 13, 2013, Luiz Augusto von Dentz wrote:
> > > This device is using random device address, but I do not know how to
> > > pair with it in that case. I try to pair with it using a smartphone
> > > with support and it is working. Any help, or input on this?
> > 
> > I believe we don't support pairing with devices using random/private,
> > but you should probably upgrade if you are planning to use Bluetooth
> > LE BlueZ 5.x is recommended.
> 
> In general we don't really support any LE related stuff with BlueZ 4
> simply because LE pairing requires the mgmt interface and it wasn't
> stable yet during BlueZ 4 times.
> 
> Regarding pairing with random addressed devices, BlueZ 5 will allow that
> but only for a single connection. Once you disconnect the pairing info
> is gone since it'd anyway be unusable if the remote side changed its
> address. Until we get IRK generation support for the kernel this is how
> user space will keep behaving.

Correcting myself: it's only private random address devices that will
have this behavior; static random addresses will work fine and keep the
pairing info persistent.

Johan
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