public async void StartScanningForDevices(Guid serviceUuid)
{
await WaitForState(CBCentralManagerState.PoweredOn);
Debug.WriteLine("Adapter: Starting a scan for devices.");
CBUUID[] serviceUuids = null; // TODO: convert to list so multiple Uuids can be detected
if (serviceUuid != Guid.Empty)
{
var suuid = CBUUID.FromString(serviceUuid.ToString());
serviceUuids = new CBUUID[] { suuid };
Debug.WriteLine("Adapter: Scanning for " + suuid);
}
// clear out the list
DiscoveredDevices = new List <IDevice>();
// start scanning
IsScanning = true;
CentralManager.ScanForPeripherals(serviceUuids);
// in 10 seconds, stop the scan
await Task.Delay(10000);
// if we're still scanning
if (IsScanning)
{
Console.WriteLine("Adapter: Scan timeout has elapsed.");
IsScanning = false;
CentralManager.StopScan();
ScanTimeoutElapsed(this, new EventArgs());
}
}
/// <summary>
/// Begins the scanning for bluetooth LE devices. Automatically called after 10 seconds
/// to prevent battery drain.
/// </summary>
/// <returns>The scanning for devices.</returns>
public async Task BeginScanningForDevices()
{
Console.WriteLine("BluetoothLEManager: Starting a scan for devices.");
// clear out the list
DiscoveredDevices = new List <CBPeripheral>();
// start scanning
IsScanning = true;
CentralManager.ScanForPeripherals(peripheralUuids: null);
// in 10 seconds, stop the scan
await Task.Delay(10000);
// if we're still scanning
if (IsScanning)
{
Console.WriteLine("BluetoothLEManager: Scan timeout has elapsed.");
CentralManager.StopScan();
ScanTimeoutElapsed(this, new EventArgs());
}
}
public void StopScanningForDevices()
{
Console.WriteLine("Adapter: Stopping the scan for devices.");
IsScanning = false;
CentralManager.StopScan();
}