[Bluez-devel] Re: Developing Broadcom driver support

[Keith Bannister <keith.bannister@gmail.com>]

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Hi Brad,


>  but it seems that the broadcom was
> erroneously returning a 0 in an mtu field


Thanks for the heads up.

I tried the Broadcom patches didn't seem to work fo me

I applied the patch from here
http://sourceforge.net/mailarchive/message.php?msg_id=14450798 and here
http://sourceforge.net/mailarchive/message.php?msg_id=14772190

using both and either one at a time. I never got much joy.

(p.s. is there a better way of recompiling than make modules;make
modules_install?)

The patch seems to correctly set the sco field:

[root@mythtv keith]# grep hci_cc_info_param /var/log/messages | grep mtu
Feb 11 16:21:24 localhost kernel: hci_cc_info_param: hci0 mtu: acl 377, sco
16 max_pkt: acl 10, sco 8

But I still don't get any audio, similar to other complaints.

>From hcidump, it looks like for some reason the driver decides not to send
any data.

The headset/dongle where a budget pack from maplin.
Dongle: LM Technologies BTU01D
Headset: LM Technologies BHS02C

That'll teach me for not getting a known brand. Oh well.

Attached is the info I can pull from various sources

If anyone has any other ideas, I'm keen to hear them.

Cheers,

Keith

-------------------------
BTSCO session
btsco v0.41
Device is 1:0
Voice setting: 0x0060
RFCOMM channel 1 connected
[root@mythtv kernel]# btsco -v 00:0B:0D:66:08:07
btsco v0.41
Device is 1:0
Voice setting: 0x0060
RFCOMM channel 1 connected
speaker volume: 11 mic volume: 13
i/o needed: connecting sco...
connected SCO channel
Done setting sco fd
recieved AT+VGS=11
Sending up speaker change 11
speaker volume: 11 mic volume: 13
driver is not in use
disconnected SCO channel

-----------------------
hci dump (run after btsco but before aplay)
root@mythtv ~]# /usr/sbin/hcidump -X
HCI sniffer - Bluetooth packet analyzer ver 1.18
device: hci0 snap_len: 1028 filter: 0xffffffff
< ACL data: handle 6 flags 0x02 dlen 18
    L2CAP(d): cid 0x0049 len 14 [psm 0]
      0000: 0b ef 15 41 54 2b 56 47  53 3d 31 31 0d 9a        ...AT+VGS=11..
< ACL data: handle 6 flags 0x02 dlen 18
    L2CAP(d): cid 0x0049 len 14 [psm 0]
      0000: 0b ef 15 41 54 2b 56 47  4d 3d 31 33 0d 9a        ...AT+VGM=13..
< HCI Command: Add SCO Connection (0x01|0x0007) plen 4
    handle 6 ptype 0x00e0
    Packet type: HV1 HV2 HV3
  0000: 06 00 e0 00                                       ....
> HCI Event: Command Status (0x0f) plen 4
  0000: 00 01 07 04                                       ....
> HCI Event: Number of Completed Packets (0x13) plen 5
  0000: 01 06 00 02 00                                    .....
> HCI Event: Connect Complete (0x03) plen 11
  0000: 00 01 00 07 08 66 0d 0b  00 00 01                 .....f.....
> ACL data: handle 6 flags 0x02 dlen 19
    L2CAP(d): cid 0x0041 len 15 [psm 0]
      0000: 09 ff 15 02 41 54 2b 56  47 53 3d 31 31 0d 5c
....AT+VGS=11.\
< ACL data: handle 6 flags 0x02 dlen 14
    L2CAP(d): cid 0x0049 len 10 [psm 0]
      0000: 0b ef 0d 0d 0a 4f 4b 0d  0a 9a                    .....OK...
> HCI Event: Number of Completed Packets (0x13) plen 5
  0000: 01 06 00 01 00                                    .....
< HCI Command: Disconnect (0x01|0x0006) plen 3
    handle 1 reason 0x13
    Reason: Remote User Teminated Connection
> HCI Event: Command Status (0x0f) plen 4
  0000: 00 01 06 04                                       ....
> HCI Event: Disconn Complete (0x05) plen 4
  0000: 00 01 00 16

------------------------------
I ran aplay as below. I had to Ctrl-C out of it (it never finishe)

[root@mythtv kernel]# aplay -B 1000000 -D plughw:Headset
/usr/share/sounds/KDE_Startup_new.wav
Playing WAVE '/usr/share/sounds/KDE_Startup_new.wav' : Signed 16 bit Little
Endian, Rate 22050 Hz, Stereo
Aborted by signal Interrupt...


-----------------------------
kernel debug after during aplay
Feb 11 16:35:17 localhost kernel: snd-bt-sco: playback_open
Feb 11 16:35:17 localhost kernel: snd-bt-sco: prepare ok bps: 16000 size:
16002 count: 4000
Feb 11 16:35:17 localhost kernel: hci_event_packet: hci0 evt 0xf
Feb 11 16:35:17 localhost kernel: hci_cs_link_ctl: hci0 ocf 0x7
Feb 11 16:35:17 localhost kernel: hci_event_packet: hci0 evt 0x13
Feb 11 16:35:17 localhost kernel: hci_num_comp_pkts_evt: hci0 num_hndl 1
Feb 11 16:35:17 localhost kernel: snd-bt-sco: playback_trigger 1
Feb 11 16:35:17 localhost kernel: snd-bt-sco: setting playback to bspcm
Feb 11 16:35:17 localhost kernel: hci_event_packet: hci0 evt 0x3
Feb 11 16:35:17 localhost kernel: hci_conn_complete_evt: hci0
Feb 11 16:35:18 localhost kernel: hci_event_packet: hci0 evt 0x13
Feb 11 16:35:18 localhost kernel: hci_num_comp_pkts_evt: hci0 num_hndl 1
Feb 11 16:35:21 localhost kernel: snd-bt-sco: playback_trigger 0
Feb 11 16:35:21 localhost kernel: snd-bt-sco: setting playback to NULL
Feb 11 16:35:21 localhost kernel: snd-bt-sco: Disposing of previous socket
count 3
Feb 11 16:35:21 localhost kernel: snd-bt-sco: file_count is 2 (expected 3)
Feb 11 16:35:21 localhost kernel: hci_event_packet: hci0 evt 0xf
Feb 11 16:35:21 localhost kernel: hci_cs_link_ctl: hci0 ocf 0x6
Feb 11 16:35:21 localhost kernel: hci_cs_link_ctl: hci0 Command status: ogf
LINK_CTL ocf 6 status 0
Feb 11 16:35:21 localhost kernel: hci_event_packet: hci0 evt 0x5
Feb 11 16:35:21 localhost kernel: hci_disconn_complete_evt: hci0 status 0
Feb 11 16:35:25 localhost kernel: hci_event_packet: hci0 evt 0x13
Feb 11 16:35:25 localhost kernel: hci_num_comp_pkts_evt: hci0 num_hndl 1
Feb 11 16:35:25 localhost kernel: hci_event_packet: hci0 evt 0x13
Feb 11 16:35:25 localhost kernel: hci_num_comp_pkts_evt: hci0 num_hndl 1
Feb 11 16:35:27 localhost kernel: hci_event_packet: hci0 evt 0xf
Feb 11 16:35:27 localhost kernel: hci_cs_link_ctl: hci0 ocf 0x6
Feb 11 16:35:27 localhost kernel: hci_cs_link_ctl: hci0 Command status: ogf
LINK_CTL ocf 6 status 0
Feb 11 16:35:27 localhost kernel: hci_event_packet: hci0 evt 0x5
Feb 11 16:35:27 localhost kernel: hci_disconn_complete_evt: hci0 status 0


--------------------------------
root@mythtv kernel]# /usr/sbin/hciconfig -a
hci0:   Type: USB
        BD Address: 00:0B:0D:63:41:46 ACL MTU: 377:10 SCO MTU: 16:8
        UP RUNNING PSCAN ISCAN AUTH ENCRYPT
        RX bytes:2507 acl:79 sco:0 events:123 errors:0
        TX bytes:2014 acl:63 sco:0 commands:42 errors:0
        Features: 0xff 0xfe 0x0d 0x38 0x08 0x08 0x00 0x00
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
        Link policy: RSWITCH HOLD SNIFF PARK
        Link mode: SLAVE ACCEPT
        Name: 'mythtv-0'
        Class: 0x120104
        Service Classes: Networking
        Device Class: Computer, Desktop workstation
        HCI Ver: 1.2 (0x2) HCI Rev: 0x4 LMP Ver: 1.2 (0x2) LMP Subver: 0x309
        Manufacturer: Broadcom Corporation (15)

---------------------------
root@mythtv kernel]# /usr/sbin/hciconfig hci0 revision
hci0:   Type: USB
        BD Address: 00:0B:0D:63:41:46 ACL MTU: 377:10 SCO MTU: 16:8
        Firmware 4.3.009

----------------------------
[root@mythtv kernel]# hcitool info 00:0B:0D:66:08:07
Requesting information ...
        BD Address:  00:0B:0D:66:08:07
        Device Name: HSII-E
        LMP Version: 1.2 (0x2) LMP Subversion: 0x611
        Manufacturer: Cambridge Silicon Radio (10)
        Features: 0xfc 0xfe 0x0f 0x00 0x08 0x08 0x00 0x00
                <encryption> <slot offset> <timing accuracy> <role switch>
                <hold mode> <sniff mode> <RSSI> <channel quality> <SCO link>
                <HV2 packets> <HV3 packets> <u-law log> <A-law log> <CVSD>
                <paging scheme> <power control> <transparent SCO>
                <AFH cap. slave> <AFH cap. master>

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