/// <summary>
/// Event handler for arrival of devices
/// </summary>
/// <param name="sender"></param>
/// <param name="devInterface">The device interface which was added</param>
private void OnAdded(Windows.Devices.Enumeration.DeviceWatcher sender, Windows.Devices.Enumeration.DeviceInformation devInterface)
{
// search the device list for a device with a matching interface ID
DeviceListEntry match = FindInList(devInterface.Id);
// If we found a match then mark it as verified and return
if (match != null)
{
if (match.Matched == false)
{
DeviceAdded(this, new UsbDeviceInfo(match));
}
match.Matched = true;
return;
}
// Create a new element for this device interface, and queue up the query of its
// device information
match = new DeviceListEntry(devInterface);
// Add the new element to the end of the list of devices
this.devices.Add(match);
DeviceAdded(this, new UsbDeviceInfo(match));
}
/// <summary>
/// Invoked when the device watcher finds a proximity sensor
/// </summary>
/// <param name="sender">The device watcher</param>
/// <param name="device">Device information for the proximity sensor that was found</param>
private void OnProximitySensorAdded(Windows.Devices.Enumeration.DeviceWatcher sender, Windows.Devices.Enumeration.DeviceInformation device)
{
if (_sensor == null && Windows.Devices.Sensors.ProximitySensor.FromId(device.Id) is Windows.Devices.Sensors.ProximitySensor foundSensor)
{
_sensor = foundSensor;
}
}
static public void SearchDevice()
{
// Additional properties we would like about the device.
// Property strings are documented here https://msdn.microsoft.com/en-us/library/windows/desktop/ff521659(v=vs.85).aspx
string[] requestedProperties = { "System.Devices.Aep.DeviceAddress", "System.Devices.Aep.IsConnected", "System.Devices.Aep.Bluetooth.Le.IsConnectable", "System.Devices.Aep.AepId", "System.Devices.Aep.Category" };
// BT_Code: Example showing paired and non-paired in a single query.
string aqsAllBluetoothLEDevices = "(System.Devices.Aep.ProtocolId:=\"{bb7bb05e-5972-42b5-94fc-76eaa7084d49}\")";
deviceWatcher =
DeviceInformation.CreateWatcher(
aqsAllBluetoothLEDevices,
requestedProperties,
DeviceInformationKind.AssociationEndpoint);
// Register event handlers before starting the watcher.
deviceWatcher.Added += DeviceWatcher_Added;
deviceWatcher.Updated += DeviceWatcher_Updated;
deviceWatcher.Removed += DeviceWatcher_Removed;
deviceWatcher.EnumerationCompleted += DeviceWatcher_EnumerationCompleted;
deviceWatcher.Stopped += DeviceWatcher_Stopped;
// Start the watcher.
deviceWatcher.Start();
}
/// <summary>
/// Event handler for arrival of Fx2 devices
/// </summary>
/// <param name="sender"></param>
/// <param name="devInterface">The device interface which was added</param>
private async void OnFx2Added(Windows.Devices.Enumeration.DeviceWatcher sender, Windows.Devices.Enumeration.DeviceInformation devInterface)
{
await
MainPage.Current.Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
() =>
{
MainPage.Current.NotifyUser(String.Format("OnFx2Added: {0}", devInterface.Id), NotifyType.StatusMessage);
// search the device list for a device with a matching interface ID
DeviceListEntry match = FindInList(devInterface.Id);
// If we found a match then mark it as verified and return
if (match != null)
{
match.Matched = true;
return;
}
// Create a new element for this device interface, and queue up the query of its
// device information
match = new DeviceListEntry(devInterface);
// Add the new element to the end of the list of devices
m_Fx2Devices.Add(match);
}
);
}
/// <summary>
/// Event handler for the end of an enumeration/reenumeration started
/// by calling Start on the device watcher. This culls out any entries
/// in the list which are no longer matched.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void OnEnumerationComplete(Windows.Devices.Enumeration.DeviceWatcher sender, object args)
{
DeviceListEntry removedDevice;
while ((removedDevice = this.devices.FirstOrDefault(e => e.Matched == false)) != null)
{
this.devices.Remove(removedDevice);
}
}
private void InitDeviceWatcher()
{
// Create a device watcher to look for instances of the device interface
this.watcher = Windows.Devices.Enumeration.DeviceInformation.CreateWatcher(
this.deviceSelector,
new string[] { "System.Devices.DeviceInstanceId" }
);
this.watcher.Added += this.OnAdded;
this.watcher.Removed += this.OnRemoved;
this.watcher.EnumerationCompleted += this.OnEnumerationComplete;
}
private async void ShadowDriverDeviceWatcher_Added(Windows.Devices.Enumeration.DeviceWatcher sender, Windows.Devices.Enumeration.DeviceInformation args)
{
ShadowDriverDevice = await CustomDevice.FromIdAsync(args.Id, DeviceAccessMode.ReadWrite, DeviceSharingMode.Exclusive);
if (ShadowDriverDevice != null)
{
await this.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.Normal, () =>
{
ViewModel.DeviceConnectStatus = "Connected";
});
}
}
/// <summary>
/// Event handler for the removal of an device
/// </summary>
/// <param name="sender"></param>
/// <param name="devInformation">The device interface that was removed</param>
private void OnRemoved(Windows.Devices.Enumeration.DeviceWatcher sender, Windows.Devices.Enumeration.DeviceInformationUpdate devInformation)
{
var deviceId = devInformation.Id;
// Search the list of devices for one with a matching ID
var match = FindInList(deviceId);
if (match != null)
{
// Remove the matched item
this.devices.Remove(match);
DeviceRemoved(this, new UsbDeviceInfo(match));
}
}
static public void Stop()
{
/// <summary>
/// Stops watching for all nearby Bluetooth devices.
/// </summary>
if (deviceWatcher != null)
{
// Unregister the event handlers.
deviceWatcher.Added -= DeviceWatcher_Added;
// Stop the watcher.
deviceWatcher.Stop();
deviceWatcher = null;
}
}
void InitDeviceWatcher()
{
// Define the selector to enumerate all of the fx2 device interface class instances
var selector = CustomDevice.GetDeviceSelector(Fx2Driver.DeviceInterfaceGuid);
// Create a device watcher to look for instances of the fx2 device interface
m_Fx2Watcher = Windows.Devices.Enumeration.DeviceInformation.CreateWatcher(
selector,
new string[] { "System.Devices.DeviceInstanceId" }
);
m_Fx2Watcher.Added += OnFx2Added;
m_Fx2Watcher.Removed += OnFx2Removed;
m_Fx2Watcher.EnumerationCompleted += OnFx2EnumerationComplete;
}
/// <summary>
/// Event handler for the end of an enumeration/reenumeration started
/// by calling Start on the device watcher. This culls out any entries
/// in the list which are no longer matched.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private async void OnFx2EnumerationComplete(Windows.Devices.Enumeration.DeviceWatcher sender, object args)
{
await
MainPage.Current.Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
() =>
{
MainPage.Current.NotifyUser(String.Format("OnFx2EnumerationComplete"), NotifyType.StatusMessage);
DeviceListEntry removedDevice;
while ((removedDevice = m_Fx2Devices.FirstOrDefault(e => e.Matched == false)) != null)
{
MainPage.Current.NotifyUser("OnFx2EnumerationComplete: Removing missing device " + removedDevice.Id, NotifyType.StatusMessage);
m_Fx2Devices.Remove(removedDevice);
}
}
);
}
/// <summary>
/// Event handler for the removal of an Fx2 device
/// </summary>
/// <param name="sender"></param>
/// <param name="devInformation">The device interface that was removed</param>
private async void OnFx2Removed(Windows.Devices.Enumeration.DeviceWatcher sender, Windows.Devices.Enumeration.DeviceInformationUpdate devInformation)
{
await
MainPage.Current.Dispatcher.RunAsync(
Windows.UI.Core.CoreDispatcherPriority.Normal,
() =>
{
var deviceId = devInformation.Id;
MainPage.Current.NotifyUser(String.Format("OnFx2Removed: {0}", deviceId), NotifyType.StatusMessage);
// Search the list of devices for one with a matching ID
var match = FindInList(deviceId);
if (match != null)
{
// Remove the matched item
MainPage.Current.NotifyUser(String.Format("OnFx2Removed: {0} removed", deviceId), NotifyType.StatusMessage);
m_Fx2Devices.Remove(match);
}
}
);
}
private void InitDeviceWatcher()
{
// Create a device watcher to look for instances of the device interface
this.watcher = Windows.Devices.Enumeration.DeviceInformation.CreateWatcher(
this.deviceSelector,
new string[] { "System.Devices.DeviceInstanceId" }
);
this.watcher.Added += this.OnAdded;
this.watcher.Removed += this.OnRemoved;
this.watcher.EnumerationCompleted += this.OnEnumerationComplete;
}
/// <summary>
/// This method Unregister the Device Watcher .
/// </summary>
public bool UnregisterDeviceWatcher()
{
if (deviceWatcher != null)
{
deviceWatcher.Stop();
deviceWatcher.Added -= DeviceAdded;
deviceWatcher.Removed -= DeviceRemoved;
deviceWatcher = null;
return true;
}
return false;
}
private void ShadowDriverDeviceWatcher_Removed(Windows.Devices.Enumeration.DeviceWatcher sender, Windows.Devices.Enumeration.DeviceInformationUpdate args)
{
ShadowDriverDevice = null;
ViewModel.DeviceConnectStatus = "Disconnected";
}
void InitDeviceWatcher()
{
// Define the selector to enumerate all of the fx2 device interface class instances
var selector = CustomDevice.GetDeviceSelector(Fx2Driver.DeviceInterfaceGuid);
// Create a device watcher to look for instances of the fx2 device interface
m_Fx2Watcher = Windows.Devices.Enumeration.DeviceInformation.CreateWatcher(
selector,
new string[] { "System.Devices.DeviceInstanceId" }
);
m_Fx2Watcher.Added += OnFx2Added;
m_Fx2Watcher.Removed += OnFx2Removed;
m_Fx2Watcher.EnumerationCompleted += OnFx2EnumerationComplete;
}
/// <summary>
/// This method Register the Device Watcher .
/// </summary>
public bool RegisterDeviceWatcher()
{
deviceWatcher = Windows.Devices.Enumeration.DeviceInformation.CreateWatcher(Windows.Devices.Enumeration.DeviceClass.PortableStorageDevice);
if (deviceWatcher != null)
{
deviceWatcher.Added += DeviceAdded;
deviceWatcher.Removed += DeviceRemoved;
deviceWatcher.Start();
return true;
}
return false;
}
