public static void ScanForHeartRateMonitors (CBCentralManager manager)
{
if (manager == null) {
throw new ArgumentNullException ("manager");
}
manager.ScanForPeripherals (PeripheralUUID);
}
public IEnumerable <BluetoothDevice> ScanForDevices()
{
_devices = new List <BluetoothDevice>();
_nativeDevices = new List <CBPeripheral>();
_manager?.ScanForPeripherals(CBUUID.FromString("00001101-0000-1000-8000-00805F9B34FB"));
_manager?.StopScan();
return(_devices);
}
public void ScanForBroadcasters(CBCentralManager mgr, UIButton Scanner)
{
//Passing in null scans for all peripherals. Peripherals can be targeted by using CBUIIDs
mgr.ScanForPeripherals (cbuuids); //Initiates async calls of DiscoveredPeripheral
Scanner.SetTitle("Started scan Scan", UIControlState.Normal);
//Timeout after 30 seconds
var timer = new Timer (30 * 1000);
//mgr.StopScan ();
timer.Elapsed += (sender, e) => {
Console.WriteLine("Stopping scan");
mgr.StopScan ();
Console.WriteLine("Scan stopped");
Scanner.SetTitle("Stopped Scan", UIControlState.Normal);
};
}
protected override async Task StartScanningForDevicesNativeAsync(Guid[] serviceUuids, bool allowDuplicatesKey, CancellationToken scanCancellationToken)
{
// Wait for the PoweredOn state
await WaitForState(CBCentralManagerState.PoweredOn, scanCancellationToken).ConfigureAwait(false);
if (scanCancellationToken.IsCancellationRequested)
{
throw new TaskCanceledException("StartScanningForDevicesNativeAsync cancelled");
}
Trace.Message("Adapter: Starting a scan for devices.");
CBUUID[] serviceCbuuids = null;
if (serviceUuids != null && serviceUuids.Any())
{
serviceCbuuids = serviceUuids.Select(u => CBUUID.FromString(u.ToString())).ToArray();
Trace.Message("Adapter: Scanning for " + serviceCbuuids.First());
}
_centralManager.ScanForPeripherals(serviceCbuuids, new PeripheralScanningOptions {
AllowDuplicatesKey = allowDuplicatesKey
});
}
public Task StartScanningForDevicesAsync(ScanMode mode, Guid[] serviceUuids = null, bool allowDuplicatesKey = false, CancellationToken cancellationToken = default)
{
if (centralManager.State == CBCentralManagerState.PoweredOn)
{
Console.WriteLine("BluetoothCentralService: Starting a scan for devices.");
CBUUID[] serviceCbuuids = null;
if (serviceUuids != null && serviceUuids.Any())
{
serviceCbuuids = serviceUuids.Select(uuid => uuid.cbuuidFromGuid()).ToArray();
}
centralManager.ScanForPeripherals(serviceCbuuids, new PeripheralScanningOptions {
AllowDuplicatesKey = allowDuplicatesKey
});
Console.WriteLine("BluetoothCentralService: Scanning for " + serviceCbuuids.First());
return(Task.CompletedTask);
}
else
{
throw new TaskCanceledException("Scanning cancelled, Bluetooth is not ON");
}
}
private void StartScanningSynchronized()
{
if (_centralManager.State != CBCentralManagerState.PoweredOn)
{
_shouldBeScanning = true;
MvxTrace.TaggedTrace(MvxTraceLevel.Diagnostic, "Beacons", $"CentralManager state is {_centralManager.State}, cannot start scan");
}
else
{
MvxTrace.TaggedTrace(MvxTraceLevel.Diagnostic, "Beacons", "Starting to scan for Eddystones");
var peripheralUuids = new List <CBUUID>();
peripheralUuids.Add(CBUUID.FromString("FEAA")); //eddystone service id
//peripheralUuids.Add(CBUUID.FromString("0215")); //ibeacon service id, but don't work
//peripheralUuids.Add(CBUUID.FromBytes(new byte[] { 0x02, 0x15 }));
//peripheralUuids.Add(CBUUID.FromBytes(new byte[] { 0x02, 0x01 }));
//peripheralUuids.Add(CBUUID.FromBytes(new byte[] { 0x02, 0x01, 0x1a, 0x1a }));
//peripheralUuids.Add(CBUUID.FromBytes(new byte[] { 0x1a, 0x1a }));
//peripheralUuids.Add(CBUUID.FromBytes(new byte[] { 0x4c, 0x00 }));
//peripheralUuids.Add(CBUUID.FromBytes(new byte[] { 0x4c, 0x00, 0x02, 0x15 }));
// 02 01 1a 1a ff 4c 00 02 15 – #Apple's fixed iBeacon advertising prefix
// стартовать поиск всех устройств BLE и отбирать среди них тех, у кого есть последовательность байт как в предыдущей строке
//Полезные ссылки:
//https://github.com/AltBeacon/android-beacon-library/blob/master/src/main/java/org/altbeacon/beacon/BeaconParser.java
//https://glimwormbeacons.com/learn/what-makes-an-ibeacon-an-ibeacon/
//http://stackoverflow.com/questions/20387327/using-corebluetooth-with-ibeacons
_centralManager.ScanForPeripherals(
peripheralUuids.ToArray(),
new PeripheralScanningOptions(NSDictionary.FromObjectAndKey(NSObject.FromObject(true), CBCentralManager.ScanOptionAllowDuplicatesKey))
);
}
}
public void Start(TracingInformation config)
{
if (config == null || _enabled == true)
{
return;
}
_tracingInformation = config;
CBUUID uuidService = CBUUID.FromString(_tracingInformation.ServiceId);
CBUUID uuidCharacteristic = CBUUID.FromString(_tracingInformation.CharacteristicId);
// TODO: options prevent android from being discovered on IOS, investigation required
var options = new PeripheralScanningOptions()
{
AllowDuplicatesKey = true
};
_centralManager.ScanForPeripherals(new CBUUID[] { uuidService }, options);
_enabled = true;
Covi.Features.BluetoothTracing.TracingState.Instance.SetScanningState(true);
_logger.LogDebug($"Scanning started for service {_tracingInformation.ServiceId}.");
}
public override void UpdatedState(CBCentralManager central)
{
switch (central.State)
{
case CBCentralManagerState.Unknown:
Debug.WriteLine("CBCentralManagerState.Unknown");
break;
case CBCentralManagerState.Resetting:
Debug.WriteLine("CBCentralManagerState.Resetting");
break;
case CBCentralManagerState.Unsupported:
Debug.WriteLine("CBCentralManagerState.Unsupported");
break;
case CBCentralManagerState.Unauthorized:
Debug.WriteLine("CBCentralManagerState.Unauthorized");
break;
case CBCentralManagerState.PoweredOff:
Debug.WriteLine("CBCentralManagerState.PoweredOff");
break;
case CBCentralManagerState.PoweredOn:
Debug.WriteLine("CBCentralManagerState.PoweredOn");
central.ScanForPeripherals(peripheralUuids: new CBUUID[] { },
options: new PeripheralScanningOptions {
AllowDuplicatesKey = true
});
break;
default:
throw new NotImplementedException();
}
}
/// <summary>
/// Start scanning for devices.
/// </summary>
/// <param name="serviceUuids">White-listed service UUIDs</param>
public async void StartScanningForDevices(params string[] serviceUuids)
{
await WaitForState(CBCentralManagerState.PoweredOn);
var uuids = new List <CBUUID>();
foreach (var guid in serviceUuids)
{
uuids.Add(CBUUID.FromString(guid));
}
DiscoveredDevices = new List <IDevice>();
IsScanning = true;
_central.ScanForPeripherals(uuids.ToArray());
await Task.Delay(ScanTimeout);
if (IsScanning)
{
StopScanningForDevices();
ScanTimeoutElapsed(this, EventArgs.Empty);
}
}
public void ScanForPeripherals()
{
mgr.ScanForPeripherals((CBUUID[])null, (NSDictionary)null);
}
public void ScanForPeripherals()
{
nativeManager.ScanForPeripherals(peripheralUuids: null);
}
