/// <summary>
/// Called when information on a discovered BLE device has changed
/// </summary>
/// <param name="sender">Device watcher which discovered the device</param>
/// <param name="device_info">BLE device information</param>
private void DeviceWatcher_Updated(DeviceWatcher sender, DeviceInformationUpdate device_info)
{
// Retrieve device information
BleDeviceInformation ble_device_info = new BleDeviceInformation();
ble_device_info.Id = device_info.Id;
try
{
ble_device_info.MacAddress = device_info.Properties["System.Devices.Aep.DeviceAddress"].ToString();
}
catch (KeyNotFoundException)
{
ble_device_info.MacAddress = "";
}
try
{
ble_device_info.IsConnected = (bool)device_info.Properties["System.Devices.Aep.IsConnected"];
}
catch (KeyNotFoundException)
{
ble_device_info.IsConnected = false;
}
try
{
ble_device_info.IsConnectable = (bool)device_info.Properties["System.Devices.Aep.Bluetooth.Le.IsConnectable"];
}
catch (KeyNotFoundException)
{
ble_device_info.IsConnectable = false;
}
// Notify device update
DeviceUpdated?.Invoke(this, ble_device_info);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="device_info"></param>
public UwpBleDevice(BleDeviceInformation ble_device_info)
{
// Save device information
_ble_device_info = ble_device_info;
// Initialize listener list
_ble_notification_listeners = new Dictionary <BleGattCharacteristic, Action <BleGattCharacteristic, BleValue> >(100);
_ble_characteristics = new Dictionary <GattCharacteristic, BleGattCharacteristic>(100);
}
/// <summary>
/// Called when a discovered BLE device is no longer reachable
/// </summary>
/// <param name="sender">Device watcher which discovered the device</param>
/// <param name="device_info">BLE device information</param>
private void DeviceWatcher_Removed(DeviceWatcher sender, DeviceInformationUpdate device_info)
{
// Retrieve device information
BleDeviceInformation ble_device_info = new BleDeviceInformation();
ble_device_info.Id = device_info.Id;
// Notify device removal
DeviceLost?.Invoke(this, ble_device_info);
}
/// <summary>
/// Create a BLE device proxy object from a BLE device information
/// </summary>
/// <param name="device_info">BLE device information to use</param>
/// <returns>BLE device proxy object on success, null otherwise</returns>
public async Task <IBleDevice> CreateDeviceAsync(BleDeviceInformation device_info)
{
IBleDevice ble_device = null;
UwpBleDevice win_ble_device = new UwpBleDevice(device_info);
bool init_succeed = await win_ble_device.Initialize();
if (init_succeed)
{
ble_device = win_ble_device;
}
return(ble_device);
}
