Hi, All
I'm working on a project on arm platform (Cirrus EP9312 Board, Arm9)
which utilized bluez. And I now encountered a problem: the rfcomm
connection can't be established. Only occasionally can the rfcomm
connection be established. I'm using a USB dongle with Broadcom
bluetooth chip inside of hci version 2.0. This dongle works well on
my Laptop with linux-iamge-2.6.18. So I don't think the problem lies
in the bluetooth dongle.
My embeded arm platform runs the kernel 2.6.8-1 patched with patch
from http://www.cirrus.com. But I don't think the patch file does anything
related to bluetooth.
Is there any way to use the lastest bluetooth kernel source on a arm
platform with kernel 2.6.8-1 ?
The typical output of hcidump is as following:
~ # hcidump -x -V
HCI sniffer - Bluetooth packet analyzer ver 1.30
device: hci0 snap_len: 1028 filter: 0xffffffff
< HCI Command: Create Connection (0x01|0x0005) plen 13
bdaddr 00:17:B0:B1:B2:CC ptype 0xcc18 rswitch 0x01 clkoffset 0x0000
Packet type: DM1 DM3 DM5 DH1 DH3 DH5
> HCI Event: Command Status (0x0f) plen 4
Create Connection (0x01|0x0005) status 0x00 ncmd 1
> HCI Event: Connect Complete (0x03) plen 11
status 0x00 handle 12 bdaddr 00:17:B0:B1:B2:CC type ACL encrypt 0x00
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Connect req: psm 3 scid 0x0040
> HCI Event: Max Slots Change (0x1b) plen 3
handle 12 slots 5
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 0 status 0
Connection successful
< ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
MTU 1024
> ACL data: handle 12 flags 0x02 dlen 16
L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
MTU 32772
< ACL data: handle 12 flags 0x02 dlen 14
L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
Success
> ACL data: handle 12 flags 0x02 dlen 17
> ACL data: handle 12 flags 0x01 dlen 1
L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 4
Success
MTU 1024
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): SABM: cr 1 dlci 0 pf 1 ilen 0 fcs 0x1c
> HCI Event: Number of Completed Packets (0x13) plen 5
handle 12 packets 4
> ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): UA: cr 1 dlci 0 pf 1 ilen 0 fcs 0xd7
< ACL data: handle 12 flags 0x02 dlen 18
L2CAP(d): cid 0x0040 len 14 [psm 3]
RFCOMM(s): PN CMD: cr 1 dlci 0 pf 0 ilen 10 fcs 0x70 mcc_len 8
dlci 18 frame_type 0 credit_flow 15 pri 7 ack_timer 0
frame_size 1019 max_retrans 0 credits 7
> ACL data: handle 12 flags 0x02 dlen 18
L2CAP(d): cid 0x0040 len 14 [psm 3]
RFCOMM(s): PN RSP: cr 0 dlci 0 pf 0 ilen 10 fcs 0xaa mcc_len 8
dlci 18 frame_type 0 credit_flow 14 pri 7 ack_timer 0
frame_size 1019 max_retrans 0 credits 0
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): SABM: cr 1 dlci 18 pf 1 ilen 0 fcs 0x32
> HCI Event: Number of Completed Packets (0x13) plen 5
handle 12 packets 2
/* it takes seconds here outputing nothing */
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): DISC: cr 1 dlci 18 pf 1 ilen 0 fcs 0xd3
< ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): DISC: cr 1 dlci 0 pf 1 ilen 0 fcs 0xfd
< ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Disconn req: dcid 0x0040 scid 0x0040
> ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): UA: cr 1 dlci 18 pf 1 ilen 0 fcs 0xf9
> ACL data: handle 12 flags 0x02 dlen 8
L2CAP(d): cid 0x0040 len 4 [psm 3]
RFCOMM(s): UA: cr 1 dlci 0 pf 1 ilen 0 fcs 0xd7
> ACL data: handle 12 flags 0x02 dlen 12
L2CAP(s): Disconn rsp: dcid 0x0040 scid 0x0040
> HCI Event: Number of Completed Packets (0x13) plen 5
handle 12 packets 3
< HCI Command: Disconnect (0x01|0x0006) plen 3
handle 12 reason 0x13
Reason: Remote User Terminated Connection
> HCI Event: Command Status (0x0f) plen 4
Disconnect (0x01|0x0006) status 0x00 ncmd 1
> HCI Event: Disconn Complete (0x05) plen 4
status 0x00 handle 12 reason 0x16
Reason: Connection Terminated by Local Host
The output of hciconfig -a is:
hci0: Type: USB
BD Address: 00:02:72:CA:DE:02 ACL MTU: 1017:8 SCO MTU: 64:0
UP RUNNING PSCAN ISCAN
RX bytes:71 acl:0 sco:0 events:8 errors:0
TX bytes:31 acl:0 sco:0 commands:8 errors:0
Features: 0xff 0xff 0x8d 0xfe 0x9b 0xf9 0x00 0x80
Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3
Link policy:
Link mode: SLAVE ACCEPT
Name: 'BCM92045DG_Class1'
Class: 0x000000
Service Classes: Unspecified
Device Class: Miscellaneous,
HCI Ver: 2.0 (0x3) HCI Rev: 0x200a LMP Ver: 2.0 (0x3) LMP Subver: 0x4127
Manufacturer: Broadcom Corporation (15)
Any tip or suggestion is welcome!
Thanks in advance!
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Hi,
> I'm working on a project on arm platform (Cirrus EP9312 Board, Arm9)
> which utilized bluez. And I now encountered a problem: the rfcomm
> connection can't be established. Only occasionally can the rfcomm
> connection be established. I'm using a USB dongle with Broadcom
> bluetooth chip inside of hci version 2.0. This dongle works well on
> my Laptop with linux-iamge-2.6.18. So I don't think the problem lies
> in the bluetooth dongle.
>
> My embeded arm platform runs the kernel 2.6.8-1 patched with patch
> from http://www.cirrus.com. But I don't think the patch file does anything
> related to bluetooth.
first of all. The 2.6.8 kernel is ancient and you should switch to a
2.6.19 and make Cirrus provide their patch for it. Not following the
upstream kernel releases is a bad behavior of embedded system providers
and they should be punished for that by not buying their systems.
> Is there any way to use the lastest bluetooth kernel source on a arm
> platform with kernel 2.6.8-1 ?
>
> The typical output of hcidump is as following:
>
> ~ # hcidump -x -V
> HCI sniffer - Bluetooth packet analyzer ver 1.30
> device: hci0 snap_len: 1028 filter: 0xffffffff
> < HCI Command: Create Connection (0x01|0x0005) plen 13
> bdaddr 00:17:B0:B1:B2:CC ptype 0xcc18 rswitch 0x01 clkoffset 0x0000
> Packet type: DM1 DM3 DM5 DH1 DH3 DH5
> > HCI Event: Command Status (0x0f) plen 4
> Create Connection (0x01|0x0005) status 0x00 ncmd 1
> > HCI Event: Connect Complete (0x03) plen 11
> status 0x00 handle 12 bdaddr 00:17:B0:B1:B2:CC type ACL encrypt 0x00
> < ACL data: handle 12 flags 0x02 dlen 12
> L2CAP(s): Connect req: psm 3 scid 0x0040
> > HCI Event: Max Slots Change (0x1b) plen 3
> handle 12 slots 5
> > ACL data: handle 12 flags 0x02 dlen 16
> L2CAP(s): Connect rsp: dcid 0x0040 scid 0x0040 result 0 status 0
> Connection successful
> < ACL data: handle 12 flags 0x02 dlen 16
> L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
> MTU 1024
> > ACL data: handle 12 flags 0x02 dlen 16
> L2CAP(s): Config req: dcid 0x0040 flags 0x00 clen 4
> MTU 32772
> < ACL data: handle 12 flags 0x02 dlen 14
> L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 0
> Success
> > ACL data: handle 12 flags 0x02 dlen 17
> > ACL data: handle 12 flags 0x01 dlen 1
> L2CAP(s): Config rsp: scid 0x0040 flags 0x00 result 0 clen 4
> Success
> MTU 1024
> < ACL data: handle 12 flags 0x02 dlen 8
> L2CAP(d): cid 0x0040 len 4 [psm 3]
> RFCOMM(s): SABM: cr 1 dlci 0 pf 1 ilen 0 fcs 0x1c
> > HCI Event: Number of Completed Packets (0x13) plen 5
> handle 12 packets 4
> > ACL data: handle 12 flags 0x02 dlen 8
> L2CAP(d): cid 0x0040 len 4 [psm 3]
> RFCOMM(s): UA: cr 1 dlci 0 pf 1 ilen 0 fcs 0xd7
> < ACL data: handle 12 flags 0x02 dlen 18
> L2CAP(d): cid 0x0040 len 14 [psm 3]
> RFCOMM(s): PN CMD: cr 1 dlci 0 pf 0 ilen 10 fcs 0x70 mcc_len 8
> dlci 18 frame_type 0 credit_flow 15 pri 7 ack_timer 0
> frame_size 1019 max_retrans 0 credits 7
> > ACL data: handle 12 flags 0x02 dlen 18
> L2CAP(d): cid 0x0040 len 14 [psm 3]
> RFCOMM(s): PN RSP: cr 0 dlci 0 pf 0 ilen 10 fcs 0xaa mcc_len 8
> dlci 18 frame_type 0 credit_flow 14 pri 7 ack_timer 0
> frame_size 1019 max_retrans 0 credits 0
> < ACL data: handle 12 flags 0x02 dlen 8
> L2CAP(d): cid 0x0040 len 4 [psm 3]
> RFCOMM(s): SABM: cr 1 dlci 18 pf 1 ilen 0 fcs 0x32
> > HCI Event: Number of Completed Packets (0x13) plen 5
> handle 12 packets 2
>
>
>
> /* it takes seconds here outputing nothing */
>
>
>
>
> < ACL data: handle 12 flags 0x02 dlen 8
> L2CAP(d): cid 0x0040 len 4 [psm 3]
> RFCOMM(s): DISC: cr 1 dlci 18 pf 1 ilen 0 fcs 0xd3
I am sorry, but that is not BlueZ fault. You are connection to RFCOMM
channel 9 and the other side doesn't answer. We can only terminate the
connection attempt after a timeout.
Regards
Marcel
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