Help in getting BlueZ version - 5.14 running please

DISCUSSION tony 1 participant 2 messages Feb 13, 2014 – Feb 14, 2014 1 message not in the archive Bluetooth drivers

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tony

author

2014-02-13 19:43 UTC #0 lore raw

Hi,
I am trying to familiarize with blueZ commands. I can scan
devices and see HCI commands and events using hcidump. But am having some problems which I have been trying to figure out the past two days. Any suggestions or pointers will be much appreciated.

1) I found a lot of forums talking about creating connection. But couldn't find any which says how to accept connection. I am trying to accept an A2DP connection. The peer device is sending an AVDTP Connect request but don't know how to make blueZ respond. Can somebody please help?

2) I tried to start bluetooth daemon by running

Quoted 4 lines

../src/bluetoothd -n -d
bluetoothd[4440]: Bluetooth daemon 5.14 bluetoothd[4440]: Failed to access management interface bluetoothd[4440]: Adapter handling initialization failed

The kernel modules I have are

Quoted 2 lines

lsmod | grep blue
bluetooth 158447 7 rfcomm,bnep,btusb

Should I be running any other command before bluetoothd?

3) I am get problem in getting the python scripts in the test folder.
For example when I try to run simple-agent it throws up dbus error as below. I tried googling from which I understand some people had the same error with 5.13 as well. The dbus version I have is 1.6.4 (I had to upgrade from 1.4 to build blueZ)

Quoted 12 lines

./simple-agent hci0 00:1B:DC:07:2E:95
Traceback (most recent call last):
File "./simple-agent", line 158, in <module>

    obj = bus.get_object(BUS_NAME, "/org/bluez");
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in get_object
    follow_name_owner_changes=follow_name_owner_changes)
  File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248, in __init__
    self._named_service = conn.activate_name_owner(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in activate_name_owner
    self.start_service_by_name(bus_name)
  File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in start_service_by_name
    'su', (bus_name, flags)))

Quoted 3 lines

File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking
message, timeout)
dbus.exceptions.DBusException: org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1

Thank you for any suggestions or pointers in advance.

Tony

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tony

author

2014-02-14 13:27 UTC #2 lore raw

Thank you for the information. Yes, my kernel is 3.2. I shall try blueZ 4.101. Hopefully that wont have any dependency on the kernel version?

Thanks,
Tony

Quoted 78 lines · Luiz Augusto von Dentz

Quoted 3 lines · On Feb 13, 2014 10:13 PM, "tony" <[email protected]…
Hi,
I am trying to familiarize with blueZ commands. I can scan
devices and see HCI commands and events using hcidump. But am having some problems which I have been trying to figure out the past two days. Any suggestions or pointers will be much appreciated.
Quoted 2 lines
1) I found a lot of forums talking about creating connection. But
couldn't find any which says how to accept connection. I am trying to accept an A2DP connection. The peer device is sending an AVDTP Connect request but don't know how to make blueZ respond. Can somebody please help?
Quoted 7 lines
2) I tried to start bluetooth daemon by running
Quoted 5 lines
../src/bluetoothd -n -d
bluetoothd[4440]: Bluetooth daemon 5.14 bluetoothd[4440]: Failed to access management interface bluetoothd[4440]: Adapter handling initialization failed
Looks like you don't have mgmt interface enabled in your kernel, probably because it is too old for using with BlueZ 5 which require at least 3.4 but nowadays it is probably recommended to use 3.10 or latter.
Quoted 11 lines
The kernel modules I have are
Quoted 2 lines
lsmod | grep blue
bluetooth 158447 7 rfcomm,bnep,btusb
Should I be running any other command before bluetoothd?
3) I am get problem in getting the python scripts in the test folder. For example when I try to run simple-agent it throws up dbus error as
below. I tried googling from which I understand some people had the same error with 5.13 as well. The dbus version I have is 1.6.4 (I had to upgrade from 1.4 to build blueZ)
Quoted 7 lines
Quoted 7 lines
./simple-agent hci0 00:1B:DC:07:2E:95
Traceback (most recent call last):
File "./simple-agent", line 158, in <module>
    obj = bus.get_object(BUS_NAME, "/org/bluez");
File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 241, in
get_object
Quoted 2 lines
Quoted 2 lines
follow_name_owner_changes=follow_name_owner_changes)
File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 248,
in __init__
Quoted 2 lines
Quoted 2 lines
self._named_service = conn.activate_name_owner(bus_name)
File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 180, in
activate_name_owner
Quoted 2 lines
Quoted 2 lines
self.start_service_by_name(bus_name)
File "/usr/lib/python2.7/dist-packages/dbus/bus.py", line 278, in
start_service_by_name
Quoted 2 lines
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    'su', (bus_name, flags)))
File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line
651, in call_blocking
Quoted 2 lines
Quoted 2 lines
message, timeout)
dbus.exceptions.DBusException:
org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1
Quoted 9 lines
Thank you for any suggestions or pointers in advance.
Tony
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