Lakka 8bitdo bluetooth controller autoadd

8bitdo-controller.sh

# Tried this on Lakka (official): 2.3.2 (Generic.x86_64)
#
# This script is a WIP (work in progress
# Refs
# https://www.pcsuggest.com/linux-bluetooth-setup-hcitool-bluez/
# https://wiki.archlinux.org/index.php/Bluetooth
# https://stackoverflow.com/questions/12888589/linux-command-line-howto-accept-pairing-for-bluetooth-device-without-pin
#
# Once 8bitdo controllers are paired they do not get remembered after reboot
# Even though their configs are still present in ~/.config/bluetooth

# Because bluetoothctl doesnt allow a non-color option...
NOCOLOR="sed \"s,$(printf '\033')\\[[0-9;]*[a-zA-Z],,g\" | tr \"[:cntrl:]\" \"\n\""

# --agent is being used to tell bluetoothd that there is no input or output interact during pair
paired(){
  raw_pair=$(echo -e 'paired-devices\nexit\n' | bluetoothctl --agent="NoInputNoOutput" | eval ${NOCOLOR})

  #echo -e "$raw_pair" | grep -i paired-devices -A -
  echo -e "$raw_pair" | sed -n '/paired-devices/,$p' | grep Device
}

finddev(){
   # Sample output from scan
   #Scanning ...
   #        E4:17:D8:BE:09:6A       8Bitdo SFC30 GamePad
  
   # Get all 8bitdo controllers
   # Typically start with E4:17:D8
   
   DEVICES=$(hcitool scan --length=10 --flush | grep 8Bitdo | grep -ioE '([a-z0-9]{2}:){5}..')
   echo "${DEVICES} list"
   for DEVICE in ${DEVICES}; do
     test "$DEVICE" != '' && echo -e "pair $DEVICE\ntrust $DEVICE\nconnect $DEVICE\nexit\n" | bluetoothctl --agent="NoInputNoOutput" | eval ${NOCOLOR}
     #hcitool cc $DEVICE; hcitool auth $DEVICE
   done
}

# It appears this seems to be done by default at boot
prepbluetooth(){
  echo -e "power on\ndiscoverable on\npairable on\nscan on\nexit\n" | bluetoothctl --agent="NoInputNoOutput" | eval ${NOCOLOR}
  echo "Bluetooth prepped..."
  sleep 5
}

removedevice(){
  local DEVICE=$1
  echo -e "disconnect $DEVICE\nuntrust $DEVICE\nremove $DEVICE\nexit\n" | bluetoothctl --agent="NoInputNoOutput" | eval ${NOCOLOR}
}

# Toggling on steps during testing  
#prepbluetooth
finddev

#paired
#removedevice $1

How do I make lakka run this at start?
Thanks

@franzbischoff I havent tried this but it would appear that you can create /storage/.config/autostart.sh and have it call this script then lakka's config should just pick it up based on looking at the existing systemd services: https://github.com/libretro/Lakka-LibreELEC/blob/8c3a7e6e3cea81788f13d6d40e3f2628940e7e58/packages/libretro/retroarch/system.d/retroarch-autostart.service

Hope that helps

That works, thank you!