* [Bluez-users] SCO Connection
@ 2004-03-16 17:58 sjok1
0 siblings, 0 replies; 2+ messages in thread
From: sjok1 @ 2004-03-16 17:58 UTC (permalink / raw)
To: bluez-users
Hi,
I'm writing an application that emulates a BT Headset and I'm using a Siemens
S55 and a Sitecom USB BT Adapter. What I'm doing is the following:
Send a dial command to the phone to dial a number
Send an AT+CKPD=200 to the phone to request an audio link
Create a socket to listen for the SCO conncetion
Accept the connection when it arrives.
My problem is that after I accept the SCO connection no data is transmitted
along the connection. The phone recognises that a "headset" is in use, but if
I try to read from the connection I just get -1 returned as the num of bytes
read.
I checked my hciconfig revision and it shows that the SCO mapping is set to
HCI.
Do I need to acknowledge the connection after I accept it? Is the phone
waiting for some "ready to receive" message or something?
Thanks.
Steven
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^ permalink raw reply [flat|nested] 2+ messages in thread
* [Bluez-users] SCO connection
@ 2006-12-29 14:57 Christian Gebhard
0 siblings, 0 replies; 2+ messages in thread
From: Christian Gebhard @ 2006-12-29 14:57 UTC (permalink / raw)
To: bluez-users
Hello to all
I am trying to set up a SCO connection between 2 PCs, one with kernel 2.6.1=
8 and one with kernel 2.6.17. After several tries with sco-sockets I tried =
the scotest program with which I have the same problems as with my own sock=
et-program. The data seems to be sent (according to the output of hcidump -=
X -V), but it is not received. I have two Bluegiga Dongles with a CSR Bluec=
ore 4 External chip connected via USB to a USB2.0 PCI-Card in each PC.
output of "hciconfig -a" (same with both PCs):
hci0: Type: USB
BD Address: 00:07:80:81:A9:XX ACL MTU: 384:8 SCO MTU: 64:8
UP RUNNING PSCAN
RX bytes:684 acl:0 sco:0 events:22 errors:0
TX bytes:332 acl:0 sco:0 commands:21 errors:0
Features: 0xff 0xff 0x8f 0xfe 0x9b 0xf9 0x00 0x80
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy:
Link mode: SLAVE ACCEPT
Name: 'server-0'
Class: 0x3e0100
Service Classes: Networking, Rendering, Capturing, Object Transfer,=
Audio
Device Class: Computer, Uncategorized
HCI Ver: 2.0 (0x3) HCI Rev: 0xafa LMP Ver: 2.0 (0x3) LMP Subver: 0x=
afa
Manufacturer: Cambridge Silicon Radio (10) =
output of "hciconfig hci0 revision" (same with both PCs):
hci0: Type: USB
BD Address: 00:07:80:81:A9:XX ACL MTU: 384:8 SCO MTU: 64:8
Build 2810
Chip version: BlueCore4-External
Max key size: 56 bit
SCO mapping: HCI
If I use scotest on the sending PC appears the following:
debian:/home/christian# ./scotest -s 00:07:80:81:A9:XX
scotest[27090]: Connected [handle 46, class 0x000000]
scotest[27090]: Sending ...
on the receiving PC I get the following output:
server:/home/cgebhard# ./scotest -r
scotest[3851]: Waiting for connection ...
scotest[3852]: Connect from 00:07:80:81:A9:B4 [handle 47, class 0x3e0100]
scotest[3852]: Receiving ...
scotest[3852]: 672 bytes in 0.00m speed 1328.44 kb
scotest[3852]: 672 bytes in 0.00m speed 1515.59 kb
scotest[3852]: 672 bytes in 0.00m speed 1488.10 kb
scotest[3852]: 672 bytes in 0.00m speed 1481.38 kb
...etc...
the output of "hcidump -X -V for the sender:
< SCO data: handle 46 dlen 64
0000: a2 02 00 00 a0 02 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
0010: 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
0020: 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
0030: 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
> SCO data: handle 46 dlen 48
0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> SCO data: handle 46 dlen 48
0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> SCO data: handle 46 dlen 48
0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> SCO data: handle 46 dlen 48
0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
< SCO data: handle 46 dlen 64
0000: a3 02 00 00 a0 02 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
0010: 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
0020: 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
0030: 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
< SCO data: handle 46 dlen 64
0000: a4 02 00 00 a0 02 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
0010: 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
0020: 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
0030: 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f 7f ................
> SCO data: handle 46 dlen 48
0000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
0020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
...etc...
it seems as if now and then the data is sent, but the only data I see on th=
e receiver with "hcidump -X -V is:
> SCO data: handle 47 dlen 48
0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
> SCO data: handle 47 dlen 48
0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
> SCO data: handle 47 dlen 48
0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
> SCO data: handle 47 dlen 48
0000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0010: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
0020: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................
...etc...
it seems as if the data that was sent is not received.
Do I maybe need a kernel patch like the "patch-2.6.18-mh8.gz" or is there a=
nother problem. I am stuck with this since two weeks and don't know what to=
do. But maybe that's because I started with Linux only 2 months ago^^. I w=
ould be glad if someone could help me with this.
Regards
Chris
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