pyobjc_corebluetooth_ble_peripheral_scanner_with_central_manager.py

1import objc
2from CoreBluetooth import CBCentralManager, CBCentralManagerDelegate
3from Foundation import NSObject, NSRunLoop, NSDate
4
5class BluetoothScanner(NSObject):
6    def init(self):
7        self = objc.super(BluetoothScanner, self).init()
8        if self is None:
9            return None
10        # Initialize the Central Manager. 'self' acts as the delegate.
11        self.manager = CBCentralManager.alloc().initWithDelegate_queue_(self, None)
12        return self
13
14    def centralManagerDidUpdateState_(self, central):
15        if central.state() == 5:  # CBManagerStatePoweredOn
16            print("Bluetooth is On. Starting scan...")
17            # Scan for all peripherals (None)
18            self.manager.scanForPeripheralsWithServices_options_(None, None)
19        else:
20            print(f"Bluetooth state updated: {central.state()}")
21
22    def centralManager_didDiscoverPeripheral_advertisementData_RSSI_(self, central, peripheral, advertisementData, rssi):
23        name = peripheral.name() or "Unknown"
24        print(f"Discovered: {name} | RSSI: {rssi} | ID: {peripheral.identifier().UUIDString()}")
25
26if __name__ == "__main__":
27    # Create the scanner instance
28    scanner = BluetoothScanner.alloc().init()
29
30    # CoreBluetooth requires a running event loop to handle delegate callbacks
31    print("Scanning for 10 seconds...")
32    try:
33        # Run the loop for 10 seconds to allow discovery
34        NSRunLoop.currentRunLoop().runUntilDate_(NSDate.dateWithTimeIntervalSinceNow_(10))
35    except KeyboardInterrupt:
36        pass