First, start F3 and connect to the serial port for debugging.
Use the command to query Bluetooth devices
hciconfig
Turn on the Bluetooth function
sudo bluetoothctl //Turn on Bluetooth debugging
power on //Open the Bluetooth network card
discoverable on //Set the controller to discoverable
pairable on //Set the controller to be pairable
Scan Bluetooth
Use the command to start the scan. If you want to stop the scan, you can also use this command.
scan on //Scan MAC addresses of other Bluetooth devices
scan off //Close scanning
Enable the proxy functionality
agent on //Open the agent for connecting to other Bluetooth devices
Connect to a Bluetooth device
Use command binding and connect Bluetooth(You can also give it a try with the following other commands)
pair <MAC address> //Pairing Bluetooth devices
disconnect <MAC address> //Disconnect
remove <MAC address> //Unpairing
connect <MAC address> //Connecting a Bluetooth device
exit
Look, you have successfully connected to the Bluetooth device.