Random Bluetooth Device Interaction with PyBluez

This code uses the PyBluez library to randomly select Bluetooth device discovery, connection, service lookup, and characteristic value reading operations, and implements the functionality of reading a specific characteristic value of a specified Bluetooth device.

Technology Stack : PyBluez, Bluetooth device discovery, connection, service lookup, characteristic value reading

Code Type : The type of code

Code Difficulty : Advanced

                
                    
import random

def random_bluetooth_action(device_name, service_uuid):
    from pybluez import Bluetooth, hci

    # Discover local Bluetooth devices
    bt = Bluetooth()
    nearby_devices = bt.discover_devices(duration=10, lookup_names=True)

    # Find the device by name
    device = next((dev for dev in nearby_devices if dev['name'] == device_name), None)
    if not device:
        return "Device not found"

    # Connect to the device
    dev_addr = device['addr']
    bt_sock = BluetoothSocket(hci.HCI-Upnp)
    bt_sock.connect((dev_addr, 1))

    # Find the service by UUID
    services = bt_sock.get_services()
    for service in services:
        if service['uuid'] == service_uuid:
            service_handle = service['handle']
            break
    else:
        return "Service not found"

    # Discover characteristics of the service
    characteristics = bt_sock.get_characteristics(service_handle)
    for char in characteristics:
        if char['uuid'].startswith('0000'):
            # Assuming the first characteristic is the one we want to interact with
            char_handle = char['handle']
            break
    else:
        return "Characteristic not found"

    # Read the characteristic value
    bt_sock.read_char_value(char_handle)

    return "Characteristic value read"