Short script that connects properly to my bluetooth headphones and enables A2DP mode

a2dp_connect.sh

#!/bin/bash
# Connect to the bluetooth headphones properly and enable A2DP

mac="AA:AA:AA:AA:AA:AA" # the MAC address of the bluetooth headphones
cardname="bluez_card.AA_AA_AA_AA_AA_AA" # the audio-card name associated with the bluetooth headphones
timeout=5 # timeout for connecting

coproc bluetoothctl
echo -e "connect $mac" >&${COPROC[1]}
timeout $timeout grep -q "ServicesResolved: yes" <&${COPROC[0]} || echo -e "connect $mac" >&${COPROC[1]}
echo -e "exit" >&${COPROC[1]}

echo Connecting to card $cardname

pacmd set-card-profile $cardname off
pacmd set-card-profile $cardname a2dp_sink

exit