Auto Connect Bluetooth Headset

ace310 · June 2, 2016 at 4:26 AM

Hi there,

I have a bluetooth adapter on Rasp pi 2 with Nokia bluetooth headset working fine. Very happy that finally we have bluetooth audio on kodi 16.1. The issue is when I turn off bluetooth and switch back on, it does not auto connect. I have to drill down all the menu and select -> connect to make it work. I have tried using both Connect and Trust & Connect option without luck. Using Libreelec 7.0.1.

Am I missing something here or it is by design and not suppose to auto connect. If later, what are others doing? Any suggestions on shortcuts?

I have added 2 shortcut buttons to switch between bluetooth audio & hdmi in kodi remote ios app. How do I add this toggle in cec remote?

Cheers

**lrusak** · June 2, 2016 at 5:35 AM Official Post

Honestly to me it just seems like it depends on the device. I have a bluetooth speaker that auto connects fine when I turn the speaker on yet my iPhone does not auto connect.

Perhaps it is something in bluez that I can look into.

ace310 · June 2, 2016 at 11:24 PM

Thanks. Sorry, but by bluez do you mean debug log? If auto connect does not work, is there a way to create some shortcut to select the headset so that I don't have to drill down to settings to select it?

Cheers.

zosky · June 15, 2016 at 4:09 AM

lrusak, thanks again for pointing out audioProfiles on the thread i started.

my headphones wont auto-reconnect either. i tried forgetting & trusting. no change.

please let us know if anything would help ya, like a bluetoothd debug or contents of my ~/.cache/bluetooth ?

in the meantime can we force a reconnect from the command line ? that would allow me to map a remote button to 'reconnect & switch audio profiles'

i've tried google for a few hours but im not succeeding. any advice would be appreciated.

zosky · June 16, 2016 at 12:00 AM

after some sleep, i gave google another chance ...

Code

echo -e "connect <MY-HEADPHONES-MAC>\nexit" | bluetoothctl

then i made a wrapper around audioProfiles so if its switching to BT ... connect to the headPhones

its pretty dirty, but more importantly the wife is happy.

zosky · June 24, 2016 at 6:06 PM

got a PM on how to do the wrapper. figured i'd post here just so anyone else looking doesn't have to ask too.

rather then pointing a button to "RunScript(script.audio.profiles,0)" like the audioProfiles addon says.

do something like this

Code

<key id="0x07">RunScript(/storage/autoConnect.py)</key>

then create /storage/autoConnect.py
and replace ##YOUR-BT-MAC## on the 2nd last line

Python

import xbmc
import os
from subprocess import call


# switch sound profiles
xbmc.executebuiltin("RunScript(script.audio.profiles,0)")


# read 'current profile' from script.audio.profiles  
current = open('/storage/.kodi/userdata/addon_data/script.audio.profiles/profile', 'r')


# for me 1 = surround // 2 = blueTooth
# logical would say 'if 2' then connect the BT headset
# but audioProfiles takes some time to make the change & update the 'current' file
# so instead 'if 1 connect' (we know it will become 2 soon)
if current.read() == '1':
     call('echo -e "connect ##YOUR-BT-MAC##\nexit" | bluetoothctl', shell=True)


current.close()

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frownbreaker · November 17, 2016 at 9:29 PM Best Answer

Thanks for posting the code and your fix I've reused the code you posted. Thanks!

I have a device that pairs via bluetooth and the BT connection survives a reboot. Though if a another device connects to the BT audio adaptor the adaptor will reconnect to that.
After some testing the BT Audio adaptor seems to remember the last 2 connected BT devices and searches for these in order of last connection.
If a third device connects then the BT address used that was not used for the longest time is forgotten.

I looked at your script and the connect can be run without checking if the Audio Profile is in mode 1 or 2 you can unconditionally invoke the BT connect as if the device is already connected the command has no effect: All you need is the line call('echo -e "connect ##YOUR-BT-MAC##\nexit" | bluetoothctl', shell=True)

The code you have to switch audio profiles uses the zero parameter this toggles the audio profile (so if its 1 it becomes 2 and if its 2 it becomes 1) not sure why you want to flip the status on boot?

I have a set up where 1 is the TV speakers and 2 is the BT so on boot I use the parameter 1 to force the sound out of the TV when the device boots: xbmc.executebuiltin('XBMC.RunScript(script.audio.profiles,1)')

My thinking for keeping the pair and the connect in the start up is that should the pairing be lost I can press the pair button on the BT Audio adaptor and then reboot the RasPi the start script will repair and reconnect.

Code

import xbmc
import os
xbmc.executebuiltin('XBMC.RunScript(script.audio.profiles,1)')
call('echo -e "pair xx:xx:xx:xx:xx:xx\nexit" | bluetoothctl', shell=True)
call('echo -e "connect xx:xx:xx:xx:xx:xx\nexit" | bluetoothctl', shell=True)