Return-Path: <bluez-users-admin@lists.sourceforge.net>
Subject: Re: [Bluez-users] How to configure a 723kbps connection?
From: Marcel Holtmann <marcel@holtmann.org>
To: grpmind+bluez.users@boromir.vpop.net
Cc: BlueZ Mailing List <bluez-users@lists.sourceforge.net>
In-Reply-To: <200402171142.i1HBgRV5023132@mail.holtmann.net>
References: <200402171142.i1HBgRV5023132@mail.holtmann.net>
Content-Type: text/plain
Message-Id: <1077018777.2841.5.camel@pegasus>
Mime-Version: 1.0
Sender: bluez-users-admin@lists.sourceforge.net
Errors-To: bluez-users-admin@lists.sourceforge.net
List-Unsubscribe: <https://lists.sourceforge.net/lists/listinfo/bluez-users>,
	<mailto:bluez-users-request@lists.sourceforge.net?subject=unsubscribe>
List-Id: <bluez-users.lists.sourceforge.net>
List-Post: <mailto:bluez-users@lists.sourceforge.net>
List-Help: <mailto:bluez-users-request@lists.sourceforge.net?subject=help>
List-Subscribe: <https://lists.sourceforge.net/lists/listinfo/bluez-users>,
	<mailto:bluez-users-request@lists.sourceforge.net?subject=subscribe>
List-Archive: <http://sourceforge.net/mailarchive/forum.php?forum=bluez-users>
Date: Tue, 17 Feb 2004 12:52:57 +0100

Hi Matt,

> > what iPAQ is this?
>         
> 2215 running ppc2003

please run "hcitool info <bdaddr>" to show us what kind of Bluetooth
chip is inside. I think it is a Zeevo one.

> > In general this is not needed, because the link manager should choose
> > the best package types for you.
> 
> I think it's not working for me. Here's my setup:

It can happen, because some link managers only does this right when they
are connected to there own dongles.

> linux 2.6.2 + USB bluetooth dongle (Actiontec); no other USB devices
> connected
> 
> # hciconfig -a
> hci0:   Type: USB
>         BD Address: 00:20:E0:3A:2E:57 ACL MTU: 2000:32  SCO MTU: 64:8
>         UP RUNNING PSCAN ISCAN AUTH ENCRYPT
>         RX bytes:1717240 acl:19853 sco:0 events:99969 errors:0
>         TX bytes:25192308 acl:134411 sco:0 commands:57 errors:0
>         Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00
>         Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
>         Link policy: HOLD SNIFF PARK
>         Link mode: ACCEPT MASTER
>         Name: 'sermons.desiringGod.org-0'
>         Class: 0x000104
>         Service Classes: Unspecified
>         Device Class: Computer, Desktop workstation
>         HCI Ver: 1.1 (0x1) HCI Rev: 0x322 LMP Ver: 1.1 (0x1) LMP Subver: 0x322
>         Manufacturer: Cambridge Silicon Radio (10)
> 
> (The default ACL MTU is 192:8; I tried cranking it up to no avail.)

Don't change the MTU. This is not a value you can change. Leave it alone
until you really know what it does.

> For a poor man's throughput test I'm downloading a 7M mpeg file, both
> through Pocket IE and by having Pocket TV stream it from my 100Mbps LAN.
> I'm running "nload -o 800 -t 250 xl0" and watching the outgoing avg in
> kbit/s.
> 
> No matter what I do, the average caps out at about 265kbps. I've tried all
> the following in various combinations:
> 
>         hcitool cpt ipaqbdaddr dh5
>         hcitool cpt ipaqbdaddr dm5
>         hciconfig hci0 ptype dh5
>         hciconfig hci0 ptype dm5
>         hciconfig hci0 aclmtu 2000:32
> 
> Running "hcitool cpt ipaqbdaddr dm1" does slow the transfer down, but
> nothing gets it going faster than 265kbps. I think I have a good link:

The Bluetooth 1.2 spec makes it clear that the DM1 will be always
allowed not matter what you give as packet types.

> # hcitool rssi 00:04:3E:81:90:E0
> RSSI return value: 0
> # hcitool lq 00:04:3E:81:90:E0
> Link quality: 255
> # hcitool tpl 00:04:3E:81:90:E0
> Current transmit power level: -8
> 
> 
> Does all this mean that my ipaq has a slow UART?

No, because the link quality and the RSSI has nothing to do with the
choosen packet type.

Regards

Marcel




-------------------------------------------------------
SF.Net is sponsored by: Speed Start Your Linux Apps Now.
Build and deploy apps & Web services for Linux with
a free DVD software kit from IBM. Click Now!
http://ads.osdn.com/?ad_id=1356&alloc_id=3438&op=click
_______________________________________________
Bluez-users mailing list
Bluez-users@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/bluez-users