qtmoko v26 bluetooth headset

Jim Morris ml at e4net.com
Thu Sep 16 10:00:58 CEST 2010

Hi Radek,

Great job, I have been away from the FR for a while, but I am back to see if I can finally use it as 
a phone, and it looks like I may be able to now with this bluetooth stuff.

Its nice to see that my qtpedometer (with car finder) still works, which is just as well as I have 
totally forgotten how to build apps for qtmoko ;)

I have several bt headsets and handsfree devices, so this is what I have found so far....

My plantronics earpiece works great, automatically connects when it is on, and the button accepts 
and hangs up calls.

My Motorola T505 handsfree device also works, but the button does not accept or hangup calls, ditto 
with the VR handsfree device I have. (This is a serious problem for me when in the car).

My IOGear stereo headset connects via A2DP, and works with mplayer (although rather choppy), and 
only appears to be mono.

I have an in-car builtin bluetooth, which I haven't tried yet, it has buttons on the steering wheel 
to accept and hangup calls.

I'll do some research to see why the headset button works but the handsfree doesn't, unless someone 
can point me to the problem.

Its amazing that you were able to integrate all this into qtmoko!

The incoming call first is a bit of a problem but I can live with that for a while.



Radek Polak wrote:
> On Thursday 16 September 2010 07:44:41 Jim Morris wrote:
>> I have not tried to make a GSM call yet using the headset, but was
>> wondering how far the BT integration has gone?
> Once you connect to the headset (which looks is working for you) it should 
> work automatically.
> But there is problem with 2.6.29 kernel - you will have no sound until you get 
> first incoming call. Then it should work good.
> Gabrys (who did all the hard work to make it working) said that with newer 
> kernels this problem is fixed. I am now testing qtmoko v27 with 2.6.34 kernel 
> but i have my headset at home, so i cant try right now.
>> 1. Should it work with a GSM call? If so what else has to be done to make
>> it work? 2. Will the headset button answer an incoming call?
> Yes. For me also the button was working. But beware some headsets which do not 
> work well with freerunner [1] - i have Jabra which is ok, but motorola does 
> not have sound.
>> 3. Do I have to manually connect everytime I want to use the headset? or
>> will it automatically connect when in range (like my other cells phones).
> My jabra connects automatically to Freerunner when it's turned on.
>> 4. I notice in the tools there is a start gsm bt audio fix, what does that
>> do? does it need to be done every time I start up the phone or connect to
>> the BT headset?
> It's called automatically after connecting to the headset. I have it there for 
> debugging purposes.
>> Thanks all for the great work, this looks very good at last, maybe after
>> waiting several years, if the BT headset stuff works, I can start using my
>> FR as a phone ;) (BT handsfree is a legal requirement here).
> I am not using headset for calls so i cant tell if it's daily use ready, but 
> it would be interesting to hear some experience...
>> I did contribute way back to the power monitoring for qtmoko and fixing
>> some bugs in that code, and can contribute to making BT work seemlessly,
>> if that is possible, but I need to know how far the current integration
>> has gone, and if anyone is actually using BT for phone calls.
> You are already in the "hall of fame" [2] :)
>> I do not really need BT to work for the media players, or voice recording
>> but it would be nice.
> It works in qtmoko too - if your headset supports it. You will have to select 
> something like "available services" from device context menu and then there 
> should appear "connect A2DP" button. It's bug that the button does not appear 
> automatically but then it should work.
> Regards
> Radek
> [1] http://wiki.openmoko.org/wiki/List_of_bluetooth_headsets
> [2] http://activationrecord.net/radekp/qtmoko/

Jim Morris, http://blog.wolfman.com

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