Re: how to set adapter to master with bluez 4.69?

On 11-03-15 11:25 AM, Brad Midgley wrote:

Brian,

Hi Brad,

You can have both master and slave connections simultaneously, just
like you can be slave to more than one master. In both cases it means
your adapter is in different piconets.

Ahhh.  See.  Shows what I know about the details of B/T.  I thought one
adapter == one piconet.

There are rules about whether devices can refuse the master/slave
switch. It's been some time since I read this so I can't remember, but
maybe it's the initiating device that starts out as slave and the
remote device has to agree to a role switch.

Hrm.  I guess I will have to play with that a bit.

So you should be able to
force the headset to cooperate, even if it's refusing role switches,
by changing who initiates that connection in addition to a link policy
that keeps your adapter as master.

OK.  So as far as the link policy that keeps the adapter as master,
after having rebooted this machine today I found the following:

$ hcitool con
Connections:
$ hciconfig hci0 lm
hci0:	Type: BR/EDR  Bus: USB
	BD Address: 00:02:72:1E:E0:12  ACL MTU: 1021:7  SCO MTU: 64:1
	Link mode: SLAVE ACCEPT

So that means that the adapter will want to be the slave in all
connections, is that right?

I should change the above slave to master as such:

$ sudo hciconfig hci0 lm master
$ hciconfig hci0 lm
hci0:	Type: BR/EDR  Bus: USB
	BD Address: 00:02:72:1E:E0:12  ACL MTU: 1021:7  SCO MTU: 64:1
	Link mode: MASTER

Is that correct?  Do I want to enable that "ACCEPT" also?

Once I do that, for my mouse at least, do I want to press the "Connect"
button on the mouse or use the Connect option for the mouse in the
bluetooth-applet?

b.