Re: [Bluez-devel] Meaning of hcitool -i dev con

[Jui-Hao Chiang <windtracekimo@gmail.com>]

Jui-Hao Chiang <windtracekimo <at> gmail.com> writes:

> 
> Hi, dear all:
> I am currently using Cyber-Blue Bluetooth USB adapter and Motorola
> Razr V3 for experiments.
> My goal is to use one adapter to open 3 SCO connections with 3 V3 cell phones.
> The chan_mobile in Asterisk gives me the way to connect the adapter to
> one phone. But when I use hcitool -i hci1 con to show the connections,
> I don't know how to explain the output (00:19:2C:D5:90:DF is cell
> phone's address):
> 
> Connections:
> 	> SCO 00:19:2C:D5:90:DF handle 2 state 1 lm SLAVE
> 	< ACL 00:19:2C:D5:90:DF handle 1 state 1 lm MASTER ENCRYPT
> 
> Does this mean that the USB adapter is playing TWO roles (master and
> slave) at the same moment??
> 
> Hope some one can give some hint.
> Best regards
> 
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I just tried to use the following to query the link mode of the adapter
[command]
hcitool -i hci1 cmd 0x02 0x0009 0x02 0x00
[output]
< HCI Command: ogf 0x02, ocf 0x0009, plen 2
  02 00 
> HCI Event: 0x0e plen 7
  01 09 08 00 02 00 00 
(If I did not make anything wrong)
0x02 is the OGF for Link Policy Command
0x0009 is the OCF for HCI_Role_Discovery
0x02 0x00 is the unit16 of connection handle

At the same time, I use "hcidump -i hci1 -w log" to listen, and then use
wireshark to view the log.
The last byte of HCI Event shows the current role is Master for this connection
handle.
So it seems confusing that "hcitool -i hci1 con" shows "Slave".




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