/// <summary>
/// Populates the device list and initializes all the various models.
///
/// Waiting for the async calls to complete takes a while, so we want to call this
/// function somewhat sparingly.
/// </summary>
/// <returns></returns>
public static async Task PopulateDeviceListAsync()
{
// Remove all devices and start from scratch
PairedDevices.Clear();
// Asynchronously get all paired/connected bluetooth devices.
var infoCollection = await DeviceInformation.FindAllAsync(BluetoothLEDevice.GetDeviceSelector());
// Re-add devices
foreach (DeviceInformation info in infoCollection)
{
// Make sure we don't initialize duplicates
if (PairedDevices.FindIndex(device => device.DeviceId == info.Id) >= 0)
{
continue;
}
BluetoothLEDevice WRTDevice = await BluetoothLEDevice.FromIdAsync(info.Id);
BEDeviceModel deviceM = new BEDeviceModel();
deviceM.Initialize(WRTDevice, info);
PairedDevices.Add(deviceM);
}
/*
* FUTURE
*
* Consider reading one characteristic from each device uncached to trigger a connection to the
* device, in case the device does not have notifiable characteristics.
*
* Also consider registering for DeviceConnectionChangeTrigger, in case a device does not have
* notifiable characteristics. But that may be overkill - what's the likelihood that a device
* won't have notifiable characteristics?
*
*/
}
/// <summary>
/// Populates the device list and initializes all the various models.
/// Waiting for the async calls to complete takes a while, so we want to call this
/// function somewhat sparingly.
/// </summary>
/// <returns></returns>
public async Task PopulateDeviceListAsync()
{
Debug.WriteLine("PopulateDeviceListAsync Started...");
Utilities.RunFuncAsTask(async() =>
{
try
{
if (IsBusy)
{
return;
}
ScanningProcess(this, true);
IsBusy = true;
// Remove all devices and start from scratch
PairedDevices.Clear();
// Asynchronously get all paired bluetooth devices.
var infoCollection = await DeviceInformation.FindAllAsync(BluetoothLEDevice.GetDeviceSelector());
// Re-add devices
foreach (var info in infoCollection)
{
// Make sure we don't initialize duplicates
if (PairedDevices.FindIndex(device => device.DeviceId == info.Id) >= 0)
{
continue;
}
var WRTDevice = await BluetoothLEDevice.FromIdAsync(info.Id);
var deviceM = new BEDeviceModel();
deviceM.Initialize(WRTDevice, info);
if (deviceM.Name.ToLower() == HaccpConstant.Blue2DeviceName)
{
if (deviceM.Connected)
{
PairedDevices.Add(deviceM);
}
}
}
Debug.WriteLine("PairedDevices Count...{0}", PairedDevices.Count);
PairedDeviceStatusUpdated(this, new DeviceStatusUpdated(PairedDevices.Any()));
if (PairedDevices.Any())
{
SelectedDevice = PairedDevices[0];
SelectedDevice.DeviceConnectionStatusChanged -= SelectedDevice_DeviceConnectionStatusChanged;
SelectedDevice.DeviceConnectionStatusChanged += SelectedDevice_DeviceConnectionStatusChanged;
ReadCharacteristics();
}
else
{
IsBusy = false;
Debug.WriteLine("No device in the list");
}
}
catch (Exception ex)
{
Debug.WriteLine("Error PopulateDeviceListAsync : {0}", ex.Message);
IsBusy = false;
ScanningProcess(this, false);
}
});
}
public void Initialize(BEDeviceModel deviceM)
{
Model = deviceM;
DeviceM = deviceM;
DeviceM.Register(this);
}