private void Start_AppBarButton_Click(object sender, RoutedEventArgs e)
{
if (_periodicTimer != null)
{
_periodicTimer.Cancel();
_periodicTimer = null;
}
// we use temporal copy of beaocnlist for testing purposes
tmpCollection = new ObservableCollection <Beacon>();
foreach (Beacon beacon in BeaconCollection)
{
// store the listening cycle, so we can show it in the results
beacon.ListeningCycle = AppSettings.Lifecycle;
tmpCollection.Add(BeaconFactory.DublicateBeacon(beacon));
}
//reset counter
_listeningCycleCounter = 0;
//and start the timer
_periodicTimer = ThreadPoolTimer.CreatePeriodicTimer(new TimerElapsedHandler(PeriodicTimerCallback),
TimeSpan.FromMilliseconds(AppSettings.Lifecycle));
//show the test overlay
ProgressView.Visibility = Visibility.Visible;
}
private void CalculateDistance(int rawSignalStrengthInDBm, int measuredPower)
{
if (rawSignalStrengthInDBm != 0 && measuredPower != 0)
{
Distance = BeaconFactory.CalculateDistanceFromRssi(rawSignalStrengthInDBm, measuredPower);
}
}
/// <summary>
/// Constructs Beacon instances from the trigger data and adds recognized beacons to the _beacons list.
/// </summary>
private List <Beacon> TriggerDetailsToBeacons(BluetoothLEAdvertisementWatcherTriggerDetails triggerDetails)
{
List <Beacon> beacons = new List <Beacon>();
if (triggerDetails != null)
{
foreach (var bleAdvertisementReceivedEventArgs in triggerDetails.Advertisements)
{
Beacon beacon = BeaconFactory.BeaconFromBluetoothLeAdvertisementReceivedEventArgs(bleAdvertisementReceivedEventArgs);
beacons.Add(beacon);
}
}
return(beacons);
}
public async void BeaconEngine_Discovered(BluetoothLEAdvertisementReceivedEventArgs args)
{
//System.Diagnostics.Debug.WriteLine("Found Beacon : " + args.BluetoothAddress);
//the test is progressing, so we do minimun amount of work here
//and simply mark the beacon we got as seen during this test cycle
if (_periodicTimer != null)
{
foreach (Beacon beacon in tmpCollection)
{
if (beacon.BluetoothAddress == args.BluetoothAddress)
{
if (_listeningCycleCounter < beacon.DiscoveryTestData.Length)
{
beacon.DiscoveryTestData[_listeningCycleCounter] = true;
return;
}
}
}
//if it was some beacon we do not have in our list, then we simply ignore it
return;
}
//beaconlist is only updated while we are not doing test
await Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
Beacon beacon = BeaconFactory.BeaconFromBluetoothLEAdvertisementReceivedEventArgs(args);
if (beacon == null)
{
return;
}
bool existingBeaconUpdated = false;
foreach (Beacon existingBeacon in BeaconCollection)
{
if (existingBeacon.Update(beacon))
{
existingBeaconUpdated = true;
beacon.Dispose();
}
}
if (!existingBeaconUpdated)
{
BeaconCollection.Add(beacon);
}
});
}
/// <summary>
/// Triggered when the watcher receives an advertisement.
/// If the advertisement came from a beacon, a Beacon instance is created based on the
/// received data. A new beacon is added to the list and an existing one is only updated.
/// </summary>
private async void OnAdvertisementReceived(BluetoothLEAdvertisementWatcher sender, BluetoothLEAdvertisementReceivedEventArgs args)
{
Logger.Debug("Scanner: Advertisement received " + args.Timestamp.ToString("HH:mm:ss.fff"));
Beacon beacon = BeaconFactory.BeaconFromBluetoothLeAdvertisementReceivedEventArgs(args);
if (beacon != null)
{
if (_enterDistanceThreshold != null && beacon.Distance > _enterDistanceThreshold.Value)
{
return;
}
if (!FilterBeaconByUuid(beacon))
{
return;
}
NotifyBeaconEvent(beacon);
}
}
/// <summary>
/// Starts the watcher and hooks its events to callbacks.
/// </summary>
/// <param name="manufacturerId">The manufacturer ID.</param>
/// <param name="beaconCode">The beacon code.</param>
/// <param name="beaconExitTimeoutInMiliseconds">Time in miliseconds after beacon will be trated as lost.</param>
/// <param name="rssiEnterThreshold">Optional rssi threshold which will trigger beacon discover event. Value must be between -128 and 127.</param>
/// <param name="enterDistanceThreshold">Optional minimal distance in meters that will trigger beacon discover event.</param>
public void StartWatcher(ushort manufacturerId, ushort beaconCode, ulong beaconExitTimeoutInMiliseconds, short?rssiEnterThreshold = null,
ulong?enterDistanceThreshold = null)
{
_beaconExitTimeout = beaconExitTimeoutInMiliseconds;
_enterDistanceThreshold = enterDistanceThreshold;
_beaconExitTimeout = 30000;
if (_beaconExitTimeout < 1000)
{
_beaconExitTimeout = 1000;
}
if (Status != ScannerStatus.Started)
{
if (_bluetoothLeAdvertisementWatcher == null)
{
_bluetoothLeManufacturerData = BeaconFactory.BeaconManufacturerData(manufacturerId, beaconCode);
_bluetoothLeAdvertisementWatcher = new BluetoothLEAdvertisementWatcher();
if (rssiEnterThreshold != null && rssiEnterThreshold.Value >= -128 && rssiEnterThreshold.Value <= 127)
{
_bluetoothLeAdvertisementWatcher.SignalStrengthFilter = new BluetoothSignalStrengthFilter()
{
InRangeThresholdInDBm = rssiEnterThreshold.Value
};
}
_bluetoothLeAdvertisementWatcher.AdvertisementFilter.Advertisement.ManufacturerData.Add(_bluetoothLeManufacturerData);
_bluetoothLeAdvertisementWatcher.SignalStrengthFilter.SamplingInterval = TimeSpan.FromMilliseconds(0);
_bluetoothLeAdvertisementWatcher.SignalStrengthFilter.OutOfRangeTimeout = TimeSpan.FromMilliseconds(_beaconExitTimeout);
_bluetoothLeAdvertisementWatcher.ScanningMode = BluetoothLEScanningMode.Active;
}
_bluetoothLeAdvertisementWatcher.Received += OnAdvertisementReceived;
_bluetoothLeAdvertisementWatcher.Stopped += OnWatcherStopped;
ServiceManager.LayoutManager?.VerifyLayoutAsync();
_bluetoothLeAdvertisementWatcher.Start();
Status = ScannerStatus.Started;
Logger.Debug("Scanner.StartWatcher(): Watcher started");
}
}
/// <summary>
/// Starts advertizing based on the set values (beacon ID 1, ID 2 and ID 3).
/// Note that this method does not validate the values and will throw exception, if the
/// values are invalid.
/// </summary>
public void Start()
{
if (!IsStarted)
{
_beacon = new Beacon();
_beacon.Id1 = BeaconId1;
_beacon.ManufacturerId = ManufacturerId;
_beacon.Code = BeaconCode;
_beacon.Id2 = BeaconId2;
_beacon.Id3 = BeaconId3;
_beacon.MeasuredPower = DefaultMeasuredPower;
_advertisementPublisher = new BluetoothLEAdvertisementPublisher();
BluetoothLEAdvertisementDataSection dataSection = BeaconFactory.BeaconToSecondDataSection(_beacon);
Logger.Debug("Advertiser.Start(): " + BeaconFactory.DataSectionToRawString(dataSection));
_advertisementPublisher.Advertisement.DataSections.Add(dataSection);
_advertisementPublisher.Start();
IsStarted = true;
}
}
/// <summary>
/// Registers the BLE advertisement watcher background task.
/// </summary>
/// <param name="configuration">Configuration for the new registration.</param>
/// <returns>The registration result.</returns>
private async Task <BackgroundTaskRegistrationResult> RegisterAdvertisementWatcherBackgroundTaskAsync(SdkConfiguration configuration)
{
BackgroundTaskRegistrationResult result = new BackgroundTaskRegistrationResult()
{
Success = false,
Exception = null
};
if (BackgroundTaskRegistered(AdvertisementClass))
{
// Already registered
Logger.Debug("BackgroundTaskManager.RegisterAdvertisementWatcherBackgroundTask(): Already registered");
result.Success = true;
}
else
{
BackgroundTaskBuilder backgroundTaskBuilder = new BackgroundTaskBuilder();
backgroundTaskBuilder.Name = AdvertisementClass + Guid.NewGuid();
backgroundTaskBuilder.TaskEntryPoint = configuration.BackgroundAdvertisementClassName;
BluetoothLEAdvertisementWatcherTrigger advertisementWatcherTrigger = new BluetoothLEAdvertisementWatcherTrigger();
// This filter includes all Sensorberg beacons
var pattern = BeaconFactory.UuidToAdvertisementBytePattern(configuration.BackgroundBeaconUuidSpace, configuration.ManufacturerId, configuration.BeaconCode);
advertisementWatcherTrigger.AdvertisementFilter.BytePatterns.Add(pattern);
ILayoutManager layoutManager = ServiceManager.LayoutManager;
AppSettings = await ServiceManager.SettingsManager.GetSettings();
// Using MaxSamplingInterval as SamplingInterval ensures that we get an event only
// when entering or exiting from the range of the beacon
advertisementWatcherTrigger.SignalStrengthFilter.SamplingInterval = advertisementWatcherTrigger.MaxSamplingInterval;
if (AppSettings.RssiEnterThreshold != null && AppSettings.RssiEnterThreshold.Value >= -128 &&
AppSettings.RssiEnterThreshold.Value <= 127)
{
advertisementWatcherTrigger.SignalStrengthFilter.InRangeThresholdInDBm = AppSettings.RssiEnterThreshold;
}
else
{
advertisementWatcherTrigger.SignalStrengthFilter.InRangeThresholdInDBm = Constants.DefaultBackgroundScannerEnterThreshold;
}
advertisementWatcherTrigger.SignalStrengthFilter.OutOfRangeThresholdInDBm = SignalStrengthFilterOutOfRangeThresholdInDBm;
advertisementWatcherTrigger.SignalStrengthFilter.OutOfRangeTimeout = TimeSpan.FromMilliseconds(AppSettings.BeaconExitTimeout);
IBackgroundTrigger trigger = advertisementWatcherTrigger;
backgroundTaskBuilder.SetTrigger(trigger);
try
{
BackgroundTaskRegistration backgroundTaskRegistration = backgroundTaskBuilder.Register();
backgroundTaskRegistration.Completed += OnAdvertisementWatcherBackgroundTaskCompleted;
backgroundTaskRegistration.Progress += OnAdvertisementWatcherBackgroundTaskProgress;
result.Success = true;
}
catch (Exception ex)
{
result.Exception = ex;
Logger.Error("BackgroundTaskManager.RegisterAdvertisementWatcherBackgroundTask(): Failed to register: ", ex);
if (ex.Message.Contains("0x800710DF)"))
{
await Window.Current.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, async() => await new MessageDialog("Activate Bluetooth for the app").ShowAsync());
}
}
if (result.Success)
{
// Check if there was a pending filter update
if (SdkData.BackgroundFilterUpdateRequired)
{
string upToDateHash = LayoutManager.CreateHashOfBeaconId1SInLayout(layoutManager.Layout);
if (!string.IsNullOrEmpty(upToDateHash) && SdkData.LayoutBeaconId1Hash.Equals(upToDateHash))
{
// Background filter updated successfully
SdkData.BackgroundFilterUpdateRequired = false;
BackgroundFiltersUpdated?.Invoke(this, null);
}
}
else if (string.IsNullOrEmpty(SdkData.LayoutBeaconId1Hash))
{
// This is the first time the background task is registered with valid layout =>
// set the hash
string upToDateHash = LayoutManager.CreateHashOfBeaconId1SInLayout(layoutManager.Layout);
if (!string.IsNullOrEmpty(upToDateHash))
{
SdkData.LayoutBeaconId1Hash = upToDateHash;
}
}
}
}
//Load last events from background
await LoadBackgroundActions();
return(result);
}
