Bluetooth listener raspberry

1.- Setup raspberry bluetooth

In this file: /etc/systemd/system/dbus-org.bluez.service

Change this line

ExecStart=/usr/libexec/bluetooth/bluetoothd

For this

ExecStart=/usr/libexec/bluetooth/bluetoothd -C
ExecStartPost=/usr/bin/sdptool add SP

Now reboot raspberry

2.- Make bluetooth discoverable

Execute the next commands in raspberry terminal

bluetoothctl
    power on
    discoverable on

3.- Turn on watching bluetooth serial

Execute command

sudo rfcomm watch hci0

4.- Connect your bluetooth app program

5.- Execute python script and enjoy :)

python bluetooth_listener.py