Python RPI BLE

Instruction

Step 0 - Install the bluetooth softwares

Open terminal, install softwares:

sudo apt-get update

sudo apt-get install bluez minicom

sudo apt-get install bluez-utils

Step 1 - Setup the SPP (serial port profile)

Open terminal, edit this file

sudo nano /etc/systemd/system/dbus-org.bluez.service

Add -C at the end of the ExecStart= line, to start the bluetooth daemon in 'compatibility' mode. Add ExecStartPost=/usr/bin/sdptool add SP immediately after that line, to add the SP Profile. The two lines should look like this:

ExecStart=/usr/lib/bluetooth/bluetoothd -C

ExecStartPost=/usr/bin/sdptool add SP

Step 2 - Save it and reboot your RPi

After rebooting your RPi, Open terminal and run this command to listen to discovery request from Android device:

sudo rfcomm watch hci0

Open another terminal and run the python code

python3 /home/pi/DIRECTORY_TO_YOUR_PYTHON_CODE/serverble.py