PSCAN and ISCAN flags in hciconfig

PSCAN and ISCAN flags in hciconfig

[Kevin Wilson]

Hello,
I have 2 PC with Linux which once used to recognize each other by
"hcitool scan" and  to create
a PAND-based connection.

Now I fail to see each other with "hcitool scan".
My question is :
I see now only the PSCAN flag when running "hciconfig" on both of then.
Is the ISCAN flag (inquiry) mandatory so that a device will be discoverable ?

following is full output on one of them:

hci0:	Type: BR/EDR  Bus: USB
	BD Address: 00:23:4E:E5:70:3A  ACL MTU: 1021:8  SCO MTU: 64:1
	UP RUNNING PSCAN
	RX bytes:1857 acl:0 sco:0 events:65 errors:0
	TX bytes:762 acl:0 sco:0 commands:57 errors:0
	Features: 0xff 0xff 0x8f 0xfe 0x9b 0xff 0x79 0x83
	Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
	Link policy: RSWITCH HOLD SNIFF PARK
	Link mode: SLAVE ACCEPT
	Name: 'n-0'
	Class: 0x400100
	Service Classes: Telephony
	Device Class: Computer, Uncategorized
	HCI Version: 2.1 (0x4)  Revision: 0x5259
	LMP Version: 2.1 (0x4)  Subversion: 0x424c
	Manufacturer: Broadcom Corporation (15)

rgs,
Kevin

Re: PSCAN and ISCAN flags in hciconfig

[Frederic Danis]

On 16/12/2012 18:58, Kevin Wilson wrote:
> Hello,
> I have 2 PC with Linux which once used to recognize each other by
> "hcitool scan" and  to create
> a PAND-based connection.
>
> Now I fail to see each other with "hcitool scan".
> My question is :
> I see now only the PSCAN flag when running "hciconfig" on both of then.
> Is the ISCAN flag (inquiry) mandatory so that a device will be discoverable ?

Yes, ISCAN means that your adapter will respond to inquiry scan, so it 
will be discoverable.

Regards

Fred

-- 
Frederic Danis                            Open Source Technology Center
frederic.danis@intel.com                              Intel Corporation

Re: PSCAN and ISCAN flags in hciconfig

[Kevin Wilson]

Hi,
Thanks Frederic.
Ok, so I rebooted the machine and still
hciconfig shows:
UP RUNNING PSCAN
and also after 'hciconfig hci0 reset"
It stays "UP RUNNING PSCAN".

So what sould I do to make the ISCAN flag set ?

 systemctl status bluetooth.service
shows that it is "active (running)"

rgs,
Kevin


On Sun, Dec 16, 2012 at 11:10 PM, Frederic Danis
<frederic.danis@linux.intel.com> wrote:
> On 16/12/2012 18:58, Kevin Wilson wrote:
>>
>> Hello,
>> I have 2 PC with Linux which once used to recognize each other by
>> "hcitool scan" and  to create
>> a PAND-based connection.
>>
>> Now I fail to see each other with "hcitool scan".
>> My question is :
>> I see now only the PSCAN flag when running "hciconfig" on both of then.
>> Is the ISCAN flag (inquiry) mandatory so that a device will be
>> discoverable ?
>
>
> Yes, ISCAN means that your adapter will respond to inquiry scan, so it will
> be discoverable.
>
> Regards
>
> Fred
>
> --
> Frederic Danis                            Open Source Technology Center
> frederic.danis@intel.com                              Intel Corporation
>

Re: PSCAN and ISCAN flags in hciconfig

[Andrei Emeltchenko]

Hi Kevin

On Mon, Dec 17, 2012 at 05:37:09AM +0200, Kevin Wilson wrote:
> Hi,
> Thanks Frederic.
> Ok, so I rebooted the machine and still
> hciconfig shows:
> UP RUNNING PSCAN
> and also after 'hciconfig hci0 reset"
> It stays "UP RUNNING PSCAN".
> 
> So what sould I do to make the ISCAN flag set ?

hciconfig hciX piscan

Best regards 
Andrei Emeltchenko 

> 
>  systemctl status bluetooth.service
> shows that it is "active (running)"
> 
> rgs,
> Kevin
> 
> 
> On Sun, Dec 16, 2012 at 11:10 PM, Frederic Danis
> <frederic.danis@linux.intel.com> wrote:
> > On 16/12/2012 18:58, Kevin Wilson wrote:
> >>
> >> Hello,
> >> I have 2 PC with Linux which once used to recognize each other by
> >> "hcitool scan" and  to create
> >> a PAND-based connection.
> >>
> >> Now I fail to see each other with "hcitool scan".
> >> My question is :
> >> I see now only the PSCAN flag when running "hciconfig" on both of then.
> >> Is the ISCAN flag (inquiry) mandatory so that a device will be
> >> discoverable ?
> >
> >
> > Yes, ISCAN means that your adapter will respond to inquiry scan, so it will
> > be discoverable.
> >
> > Regards
> >
> > Fred
> >
> > --
> > Frederic Danis                            Open Source Technology Center
> > frederic.danis@intel.com                              Intel Corporation
> >
> --
> To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html