[Bluez-devel] SCO over UART

[Bluez-devel] SCO over UART

[David Bannach]

hi,

i'm using an ericsson "ROK 101008" bluetooth module and kernel 2.6.10. 
the module can be connected via usb or rs232. and i found an ericsson 
specific hci command to switch the sco-path to HCI (it is set to PCM by 
default).

using the usb connection (hci_usb) everything works fine and i can send 
and receive audio to/from a headset. however, when connecting the module 
via serial cable (hci_uart) sending and receiving audio does not work. 
the sco connection to the headset is established but there is no sco 
data transferred. i tried to attach the device with different speeds but 
i did not notice any difference. i really need the serial connection 
because usb is not available on the target system. can somebody help me 
with this topic?

# hciconfig hci0 -a
hci0:   Type: UART
        BD Address: 00:80:00:00:00:00 ACL MTU: 672:8 SCO MTU: 64:0
        UP RUNNING
        RX bytes:97 acl:0 sco:0 events:10 errors:0
        TX bytes:50 acl:0 sco:0 commands:9 errors:0
        Features: 0xff 0xfb 0x01 0x00 0x00 0x00 0x00 0x00
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy:
        Link mode: SLAVE ACCEPT
        Name: ''
        Class: 0x3e0100
        Service Classes: Networking, Rendering, Capturing
        Device Class: Computer, Uncategorized
        HCI Ver: 1.1 (0x1) HCI Rev: 0x8103 LMP Ver: 1.1 (0x1) LMP 
Subver: 0x8b40
        Manufacturer: Ericsson Technology Licensing (0)



david



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Re: [Bluez-devel] SCO over UART

[Brad Midgley]

David

> i'm using an ericsson "ROK 101008" bluetooth module and kernel 2.6.10. 
> the module can be connected via usb or rs232. and i found an ericsson 
> specific hci command to switch the sco-path to HCI (it is set to PCM by 
> default).

What is the ericsson command and how do you inject it into hci?

Is the rok101008 similar in this respect to the rok104001? That's what's 
on the gumstix.com board and I've been *very* interested in getting sco 
working with this. I thought it couldn't be coaxed into using hci.

Brad


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Re: [Bluez-devel] SCO over UART

[David Bannach]

brad,

> What is the ericsson command and how do you inject it into hci?
>
> Is the rok101008 similar in this respect to the rok104001? That's 
> what's on the gumstix.com board and I've been *very* interested in 
> getting sco working with this. I thought it couldn't be coaxed into 
> using hci.

the command is "ericsson_set_sco_data_path". i found it in this document 
(only): 
http://www.vs.inf.ethz.ch/res/proj/smart-its/dl/ROK_101_007_revR1C-HCI_ericsson_specific.pdf

i use hcitool for sending the command to the module, e.g. the following 
line will set the sco mapping to hci:

    hcitool cmd 0x3f 0x001d 0x00

the rok101008 and rok104001 seem very similar. at least the command 
above returns a positive response on both devices. i did not notice 
differences of these devices so far. actually i want to get sco running 
on the rok104001 which is built into a qbic (pxa based wearable) but 
it's easier to try things with an external module attached to a notebook.

i'm still having the problem that bluez does not send any sco data to 
the module. i'm really curious about your results.

david


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Re: [Bluez-devel] SCO over UART

[Brad Midgley]

David,

It doesn't seem to help anything...

# hcitool cmd 0x3f 0x001d 0x00
< HCI Command: ogf 0x3f, ocf 0x001d, plen 1
   00
 > HCI Event: 0x0e plen 4
   07 1D FC 00

but then I haven't been able to confirm that I've done all the right 
things to get btsco to work on gumstix.

This doesn't look right:

btsco v0.4a
Device is 0:0
Voice setting: 0x0060
RFCOMM channel 2 connected
speaker volume: 0 mic volume: 0
driver is in use
Can't connect SCO audio channel
: Device or resource busy

where the "driver is in use" message first appears when trying to play 
music to the audio device.

Brad

David Bannach wrote:
> brad,
> 
>> What is the ericsson command and how do you inject it into hci?
>>
>> Is the rok101008 similar in this respect to the rok104001? That's 
>> what's on the gumstix.com board and I've been *very* interested in 
>> getting sco working with this. I thought it couldn't be coaxed into 
>> using hci.
> 
> 
> the command is "ericsson_set_sco_data_path". i found it in this document 
> (only): 
> http://www.vs.inf.ethz.ch/res/proj/smart-its/dl/ROK_101_007_revR1C-HCI_ericsson_specific.pdf 
> 
> 
> i use hcitool for sending the command to the module, e.g. the following 
> line will set the sco mapping to hci:
> 
>    hcitool cmd 0x3f 0x001d 0x00
> 
> the rok101008 and rok104001 seem very similar. at least the command 
> above returns a positive response on both devices. i did not notice 
> differences of these devices so far. actually i want to get sco running 
> on the rok104001 which is built into a qbic (pxa based wearable) but 
> it's easier to try things with an external module attached to a notebook.
> 
> i'm still having the problem that bluez does not send any sco data to 
> the module. i'm really curious about your results.
> 
> david
> 
> 
> -------------------------------------------------------
> SF.Net email is Sponsored by the Better Software Conference & EXPO
> September 19-22, 2005 * San Francisco, CA * Development Lifecycle Practices
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> Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
> _______________________________________________
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> Bluez-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel


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Re: [Bluez-devel] SCO over UART

[David Bannach]

brad,

this is the answer from infineon (after waiting a couple of weeks):

"ROK104001 has PD status (Product Discontinuation). Last order date is 
November 31, 2005.
For the Product Discontinuation please click 
http://www.infineon.convergy.de/upload/documents/2005/cPD_036_05.pdf
Infineon has no other BT with embedded flash.

ROK104001 do not support SCO-traffic via HCI feature.

Inquiry: We would like to transfer SCO-traffic via HCI. Is this possible 
with the ROK104 001?"



for testing i used the tools 'scotest' and 'hstest' to prevent running 
into trubles with btsco/alsa.

david


Brad Midgley wrote:

> David,
>
> It doesn't seem to help anything...
>
> # hcitool cmd 0x3f 0x001d 0x00
> < HCI Command: ogf 0x3f, ocf 0x001d, plen 1
>   00
> > HCI Event: 0x0e plen 4
>   07 1D FC 00
>
> but then I haven't been able to confirm that I've done all the right 
> things to get btsco to work on gumstix.
>
> This doesn't look right:
>
> btsco v0.4a
> Device is 0:0
> Voice setting: 0x0060
> RFCOMM channel 2 connected
> speaker volume: 0 mic volume: 0
> driver is in use
> Can't connect SCO audio channel
> : Device or resource busy
>
> where the "driver is in use" message first appears when trying to play 
> music to the audio device.
>
> Brad
>
> David Bannach wrote:
>
>> brad,
>>
>>> What is the ericsson command and how do you inject it into hci?
>>>
>>> Is the rok101008 similar in this respect to the rok104001? That's 
>>> what's on the gumstix.com board and I've been *very* interested in 
>>> getting sco working with this. I thought it couldn't be coaxed into 
>>> using hci.
>>
>>
>>
>> the command is "ericsson_set_sco_data_path". i found it in this 
>> document (only): 
>> http://www.vs.inf.ethz.ch/res/proj/smart-its/dl/ROK_101_007_revR1C-HCI_ericsson_specific.pdf 
>>
>>
>> i use hcitool for sending the command to the module, e.g. the 
>> following line will set the sco mapping to hci:
>>
>>    hcitool cmd 0x3f 0x001d 0x00
>>
>> the rok101008 and rok104001 seem very similar. at least the command 
>> above returns a positive response on both devices. i did not notice 
>> differences of these devices so far. actually i want to get sco 
>> running on the rok104001 which is built into a qbic (pxa based 
>> wearable) but it's easier to try things with an external module 
>> attached to a notebook.
>>
>> i'm still having the problem that bluez does not send any sco data to 
>> the module. i'm really curious about your results.
>>
>> david
>>
>>
>> -------------------------------------------------------
>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle 
>> Practices
>> Agile & Plan-Driven Development * Managing Projects & Teams * Testing 
>> & QA
>> Security * Process Improvement & Measurement * 
>> http://www.sqe.com/bsce5sf
>> _______________________________________________
>> Bluez-devel mailing list
>> Bluez-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>
>
>
> -------------------------------------------------------
> SF.Net email is Sponsored by the Better Software Conference & EXPO
> September 19-22, 2005 * San Francisco, CA * Development Lifecycle 
> Practices
> Agile & Plan-Driven Development * Managing Projects & Teams * Testing 
> & QA
> Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
> _______________________________________________
> Bluez-devel mailing list
> Bluez-devel@lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/bluez-devel


-- 
David Bannach
University for Health Sciences, Medical Informatics and Technology
Institute for Computer Systems and Networks
Eduard Wallnöfer-Zentrum 1, 6060 Hall in Tirol, Austria
phone:  +43 (0)50 8648 3869
phone:  +43 (0)50 UMIT ETOY
web: http://csn.umit.at/ 



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Re: [Bluez-devel] SCO over UART

[Brad Midgley]

David,

Who did you talk to at infineon? Gumstix is switching to their PBA31307 
chip which is also supposed to support sco over hci (it's hinted at in 
their docs) but not spelled out anywhere. And it shouldn't be 
end-of-lifed all that soon...

I would hope that all three chips behave the same for sco...

Gumstix is going to cover the bases with pcm too. When they switch to 
the PBA, they are going to wire the sco pcm connections to one of 
xscale's pcm i/o. We should be able to use sco over pcm.

Sco over pcm will require some devel work but it might actually be the 
perfect time to use libalsa since it will just be a regular pcm driver 
with extra signaling on top for connect/disconnect/volume.

Brad

David Bannach wrote:
> brad,
> 
> this is the answer from infineon (after waiting a couple of weeks):
> 
> "ROK104001 has PD status (Product Discontinuation). Last order date is 
> November 31, 2005.
> For the Product Discontinuation please click 
> http://www.infineon.convergy.de/upload/documents/2005/cPD_036_05.pdf
> Infineon has no other BT with embedded flash.
> 
> ROK104001 do not support SCO-traffic via HCI feature.
> 
> Inquiry: We would like to transfer SCO-traffic via HCI. Is this possible 
> with the ROK104 001?"
> 
> 
> 
> for testing i used the tools 'scotest' and 'hstest' to prevent running 
> into trubles with btsco/alsa.
> 
> david
> 
> 
> Brad Midgley wrote:
> 
>> David,
>>
>> It doesn't seem to help anything...
>>
>> # hcitool cmd 0x3f 0x001d 0x00
>> < HCI Command: ogf 0x3f, ocf 0x001d, plen 1
>>   00
>> > HCI Event: 0x0e plen 4
>>   07 1D FC 00
>>
>> but then I haven't been able to confirm that I've done all the right 
>> things to get btsco to work on gumstix.
>>
>> This doesn't look right:
>>
>> btsco v0.4a
>> Device is 0:0
>> Voice setting: 0x0060
>> RFCOMM channel 2 connected
>> speaker volume: 0 mic volume: 0
>> driver is in use
>> Can't connect SCO audio channel
>> : Device or resource busy
>>
>> where the "driver is in use" message first appears when trying to play 
>> music to the audio device.
>>
>> Brad
>>
>> David Bannach wrote:
>>
>>> brad,
>>>
>>>> What is the ericsson command and how do you inject it into hci?
>>>>
>>>> Is the rok101008 similar in this respect to the rok104001? That's 
>>>> what's on the gumstix.com board and I've been *very* interested in 
>>>> getting sco working with this. I thought it couldn't be coaxed into 
>>>> using hci.
>>>
>>>
>>>
>>>
>>> the command is "ericsson_set_sco_data_path". i found it in this 
>>> document (only): 
>>> http://www.vs.inf.ethz.ch/res/proj/smart-its/dl/ROK_101_007_revR1C-HCI_ericsson_specific.pdf 
>>>
>>>
>>> i use hcitool for sending the command to the module, e.g. the 
>>> following line will set the sco mapping to hci:
>>>
>>>    hcitool cmd 0x3f 0x001d 0x00
>>>
>>> the rok101008 and rok104001 seem very similar. at least the command 
>>> above returns a positive response on both devices. i did not notice 
>>> differences of these devices so far. actually i want to get sco 
>>> running on the rok104001 which is built into a qbic (pxa based 
>>> wearable) but it's easier to try things with an external module 
>>> attached to a notebook.
>>>
>>> i'm still having the problem that bluez does not send any sco data to 
>>> the module. i'm really curious about your results.
>>>
>>> david
>>>
>>>
>>> -------------------------------------------------------
>>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle 
>>> Practices
>>> Agile & Plan-Driven Development * Managing Projects & Teams * Testing 
>>> & QA
>>> Security * Process Improvement & Measurement * 
>>> http://www.sqe.com/bsce5sf
>>> _______________________________________________
>>> Bluez-devel mailing list
>>> Bluez-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>>
>>
>>
>>
>> -------------------------------------------------------
>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle 
>> Practices
>> Agile & Plan-Driven Development * Managing Projects & Teams * Testing 
>> & QA
>> Security * Process Improvement & Measurement * http://www.sqe.com/bsce5sf
>> _______________________________________________
>> Bluez-devel mailing list
>> Bluez-devel@lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/bluez-devel
> 
> 
> 


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Re: [Bluez-devel] SCO over UART

[David Bannach]

brad,

the mail from infineon was signed with:

    infineon product support
    lb

we are now trying external bt adapters with csr chipset. they are said 
to support sco over hci-uart.

if the pxa in the qbic supports a pcm interface and the effort for 
adapting a driver is not too big we might try this option too.

david

Brad Midgley wrote:

> David,
>
> Who did you talk to at infineon? Gumstix is switching to their 
> PBA31307 chip which is also supposed to support sco over hci (it's 
> hinted at in their docs) but not spelled out anywhere. And it 
> shouldn't be end-of-lifed all that soon...
>
> I would hope that all three chips behave the same for sco...
>
> Gumstix is going to cover the bases with pcm too. When they switch to 
> the PBA, they are going to wire the sco pcm connections to one of 
> xscale's pcm i/o. We should be able to use sco over pcm.
>
> Sco over pcm will require some devel work but it might actually be the 
> perfect time to use libalsa since it will just be a regular pcm driver 
> with extra signaling on top for connect/disconnect/volume.
>
> Brad
>
> David Bannach wrote:
>
>> brad,
>>
>> this is the answer from infineon (after waiting a couple of weeks):
>>
>> "ROK104001 has PD status (Product Discontinuation). Last order date 
>> is November 31, 2005.
>> For the Product Discontinuation please click 
>> http://www.infineon.convergy.de/upload/documents/2005/cPD_036_05.pdf
>> Infineon has no other BT with embedded flash.
>>
>> ROK104001 do not support SCO-traffic via HCI feature.
>>
>> Inquiry: We would like to transfer SCO-traffic via HCI. Is this 
>> possible with the ROK104 001?"
>>
>>
>>
>> for testing i used the tools 'scotest' and 'hstest' to prevent 
>> running into trubles with btsco/alsa.
>>
>> david
>>
>>
>> Brad Midgley wrote:
>>
>>> David,
>>>
>>> It doesn't seem to help anything...
>>>
>>> # hcitool cmd 0x3f 0x001d 0x00
>>> < HCI Command: ogf 0x3f, ocf 0x001d, plen 1
>>>   00
>>> > HCI Event: 0x0e plen 4
>>>   07 1D FC 00
>>>
>>> but then I haven't been able to confirm that I've done all the right 
>>> things to get btsco to work on gumstix.
>>>
>>> This doesn't look right:
>>>
>>> btsco v0.4a
>>> Device is 0:0
>>> Voice setting: 0x0060
>>> RFCOMM channel 2 connected
>>> speaker volume: 0 mic volume: 0
>>> driver is in use
>>> Can't connect SCO audio channel
>>> : Device or resource busy
>>>
>>> where the "driver is in use" message first appears when trying to 
>>> play music to the audio device.
>>>
>>> Brad
>>>
>>> David Bannach wrote:
>>>
>>>> brad,
>>>>
>>>>> What is the ericsson command and how do you inject it into hci?
>>>>>
>>>>> Is the rok101008 similar in this respect to the rok104001? That's 
>>>>> what's on the gumstix.com board and I've been *very* interested in 
>>>>> getting sco working with this. I thought it couldn't be coaxed 
>>>>> into using hci.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> the command is "ericsson_set_sco_data_path". i found it in this 
>>>> document (only): 
>>>> http://www.vs.inf.ethz.ch/res/proj/smart-its/dl/ROK_101_007_revR1C-HCI_ericsson_specific.pdf 
>>>>
>>>>
>>>> i use hcitool for sending the command to the module, e.g. the 
>>>> following line will set the sco mapping to hci:
>>>>
>>>>    hcitool cmd 0x3f 0x001d 0x00
>>>>
>>>> the rok101008 and rok104001 seem very similar. at least the command 
>>>> above returns a positive response on both devices. i did not notice 
>>>> differences of these devices so far. actually i want to get sco 
>>>> running on the rok104001 which is built into a qbic (pxa based 
>>>> wearable) but it's easier to try things with an external module 
>>>> attached to a notebook.
>>>>
>>>> i'm still having the problem that bluez does not send any sco data 
>>>> to the module. i'm really curious about your results.
>>>>
>>>> david
>>>>
>>>>
>>>> -------------------------------------------------------
>>>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>>>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle 
>>>> Practices
>>>> Agile & Plan-Driven Development * Managing Projects & Teams * 
>>>> Testing & QA
>>>> Security * Process Improvement & Measurement * 
>>>> http://www.sqe.com/bsce5sf
>>>> _______________________________________________
>>>> Bluez-devel mailing list
>>>> Bluez-devel@lists.sourceforge.net
>>>> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>>>
>>>
>>>
>>>
>>>
>>> -------------------------------------------------------
>>> SF.Net email is Sponsored by the Better Software Conference & EXPO
>>> September 19-22, 2005 * San Francisco, CA * Development Lifecycle 
>>> Practices
>>> Agile & Plan-Driven Development * Managing Projects & Teams * 
>>> Testing & QA
>>> Security * Process Improvement & Measurement * 
>>> http://www.sqe.com/bsce5sf
>>> _______________________________________________
>>> Bluez-devel mailing list
>>> Bluez-devel@lists.sourceforge.net
>>> https://lists.sourceforge.net/lists/listinfo/bluez-devel
>>
>>
>>
>>
>
>
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