Hi,
I've been trying to get my Motorola HS-850 headset to work with btsco,
using two different USB adapters.
It seems I'm getting quite far: I can pair the devices, btsco can
connect, and it can detect button presses:
# btsco -v 00:07:A4:5C:39:F7 1
btsco v0.4
Device is 1:0
Voice setting: 0x0060
RFCOMM channel 1 connected
recieved AT+CKPD=200
recieved AT+CKPD=200
The headset reports as:
# hcitool info 00:07:A4:5C:39:F7
Requesting information ...
BD Address: 00:07:A4:5C:39:F7
Device Name: Motorola HS850
LMP Version: 1.2 (0x2) LMP Subversion: 0x5dd
Manufacturer: Cambridge Silicon Radio (10)
Features: 0xfc 0xff 0x8b 0xf8 0x18 0x18 0x00 0x80
<encryption> <slot offset> <timing accuracy> <role switch>
<hold mode> <sniff mode> <park state> <RSSI> <channel quality>
<SCO link> <HV2 packets> <HV3 packets> <u-law log> <A-law log>
<CVSD> <paging scheme> <transparent SCO> <broadcast encrypt>
<enhanced iscan> <interlaced iscan> <interlaced pscan>
<inquiry with RSSI> <extended SCO> <AFH cap. slave>
<AFH class. slave> <AFH cap. master> <AFH class. master>
<extended features>
The problem is that I don't get audio. When I try audio playback or
recording, I do get a static hiss in the headset and lots of SCO packets
appear on the link (checked with hcidump).
I also checked that the volumes are set to max using "alsamixer -c1 -V
all". Tried aplay/arecord, sox, xmms with output to plughw:Headset, all
produce exactly the same effect.
Kernel 2.6.11, two different USB dongles (one BCM2033-based, one an
IOGear GBU-311 (thanks, Marcel!)). Same results.
What else there is to try?
--J.
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