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List:       moblin-dev
Subject:    Re: [Moblin Dev] Reg Moblin Bluez
From:       "Brandt, Todd E" <todd.e.brandt () intel ! com>
Date:       2009-07-31 15:34:05
Message-ID: CCFE8CB314F44044B3E411AF041DA4B6418A56C2 () orsmsx502 ! amr ! corp ! intel ! com
[Download RAW message or body]

Hi Phani, there are currently three known problem areas in our IVI implementation of \
HFP:

1) The Russelville bluetooth isn't capable of handling sco audio connections via \
bluetooth. It's an infineon chip configuration issue that we're working on. The \
tentative solution is to use an external bluetooth device like a Rocketfisk USB-to-BT \
dongle. 2) HFP doesn't work with PulseAudio at the moment, it only works with \
straight ALSA (you have to set the audio device to plughw:0).  3) The pairing process \
is still pretty buggy. The HandsFree app leaves pairing up to the bluez daemon and \
the gnome bluetooth applet. The two main problems are :  a) the applet doesn't work \
with some phones: iphone and blackberry for example. It seems to have a very rigid \
expectation of what the pairing steps are, and if a phone deviates even a little, the \
whole process fails.  b) bluez doesn't always realize that it isn't paired anymore, \
which causes connection issues (it should try to re-pair but since it thinks its \
paired it just tries and fails to connect).

Here are some more detailed workaround instructions:

[ One Time Setup (Platform Config) ]

To get HFP online, you need these packages: hfp, bluez, bluetooth-ivi, and \
bluez-gnome.

The hfp nohands program actually won't work out of the box since by default it's \
configured to use pulseaudio, and audio will only work correctly with ALSA. You can \
change the settings from the GUI, or better yet, just create the settings file \
manually from a terminal. Use vi to open it and fill it with the following contents \
(do this before starting hfconsole, if you've already started hfconsole then an \
instance of hfpd has already been created and you'll need to kill it so that these \
changes will take effect, "killall hfpd").

as user moblin, type:

%> vi /home/moblin/.hfpdrc

# Local settings file for hfpd
# Automatically generated, comments will be lost

[audio]
driver = ALSA
driveropts = plughw:0

[dsp]
denoise = false
echocancel_ms = 0

Next you need to configure the platform to use the USB-to-BT dongle instead of the \
timberdale bluetooth controller. All you have to do is kill the hciattach_ivi process \
and the timberdale bluetooth controller should go away. This process is started on \
boot, so if you disable the service it shouldn't start anymore. Run this command (as \
root) to disable the bluetooth-ivi service:

as user root, type:
%> /sbin/chkconfig --del bluetooth-ivi

[ Once Per Phone Setup (Cell Phone Pairing) ]

In order for the handsfree application to control your cell phone, you first have to \
pair with it. There are two methods for doing this.

METHOD1 - Pairing using Gnome bluetooth applet:

      1 Right click the applet icon and select "setup new device"
      2 After a few seconds (20 seconds tops) the list of available devices should \
appear  3 Select the cell phone you want to use and click "forward"
      4 A pairing request should appear on the cell phone and some kind of message \
should appear asking if you want to pair with the Russelville, select yes on the \
phone.  5 The cell phone should then ask for a 4 digit security code. The gnome \
applet autogenerates this code and displays it on the screen. Type this code in and \
accept on the phone.  6 The cell phone should now be paired with the Russelville.

METHOD2 - Pairing from a terminal shell (do this if the applet fails):

First get the mac address of the cell phone:

As user root, type:
%> hcitool scan
Scanning ...
        00:23:12:a2:f3:26       My iPhone

Then, using the mac address, erase any existing pairing from bluez's memory by using \
the btkillpair script installed with the bluetooth-ivi package (sometimes bluez \
doesn't realize that the pairing was lost, so you need to reset it).

As user root, type:
%> btkillpair 00:23:12:A2:F3:26

Then, using the mac address, pair with the phone using the agent script installed \
with the bluetooth-ivi package:

As user root, type:
%> btsimple-agent hci0 00:23:12:A2:F3:26
RequestPinCode (/org/bluez/1581/hci0/dev_00_23_12_A2_F3_26)
Enter PIN Code: 1234
Release
New device (/org/bluez/1581/hci0/dev_00_23_12_A2_F3_26)
%>

It will ask you to input a pin code, so do it. Then you accept the pairing request on \
the cell phone itself, type in the pin code, and you're good.

Connecting to the phone using handsfree:

Now that your phone is paired, there's one last thing you need to do to get HFP \
working. The HandsFree program is started via Applications->Office->HandsFree. On the \
first run the application won't be configured to use any specific cell phoens, so \
you'll have to have it add yours in. Click the "Search for Device" button on the top \
left. A dialog will appear that runs a device scan. You need to select your phone \
from the list and click "Add". Once you add it, handsfree will connect to your phone. \
It also saves its mac address so that the next time you start it will automatically \
reconnect to your phone. If this step works, then your finished setting up.

If, however, your phone refuses to show up in the handsfree dialer's device list \
(even though you've already paired with it), you can just manually add your phone to \
the handsfree program's history cache. Let's say the mac addr of your phone is \
00:23:12:a2:f3:26, and its name is "My iPhone". Edit the following file and add the \
following line to the [history] section (or copy as-is if the file is empty):

as user moblin, type:
%> vi /home/moblin/.hfconsolerc

 [history]
002312a2f326 = My iPhone

Now restart the handsfree application. Click the "Search for Device" button again and \
open the device discovery window. This time, however, click the "History" button. The \
window should switch to the list of devices that handsfree found in the .hfconsolerc \
file. Select your phone and click add. It should immediately try to connect. Once it \
connects, handsfree will set it to automatically reconnect on next start and you \
should be good to go.

[ Once Per Boot Setup (configuring the USB-to-BT dongle ]

You also need to configure the new bluetooth dongle so that it can handle HFP \
correctly. Run these two commands (as root) before starting the nohands dialer (needs \
to be done once after each boot):

as user root, type:

%> /usr/sbin/hciconfig hci0 voice 0x0060
%> /usr/sbin/hciconfig hci0 scomtu 64:8

-----Original Message-----
From: dev-bounces@moblin.org [mailto:dev-bounces@moblin.org] On Behalf Of \
                phani.pavan@wipro.com
Sent: Friday, July 31, 2009 6:23 AM
To: dev@moblin.org
Subject: [Moblin Dev] Reg Moblin Bluez

Hello all,
I am trying to use the HFP application released with the Moblin-IVI
alpha-2 version. I was able to pair with a phone successfully and could
connect to it using the Handsfree application. If I disconnect from the
phone and try to connect back from the phone, I was never successful. I
have changed the hci class to name to handsfree, but still no success. I
am attaching the hci-dump. Let me know if any one understands the issue.

One more issue I am facing is that there is some issue with the PA and
it always crashes and I could never hear any Audio over sco on the
target. Let me know if anyone has faced a similar problem and got over
it.

Thanks.

Best Regards,
Phani
*+918041381429

 <<hci_dump.txt>> 

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