private bool FilterDevices(VDevice device)
{
if (String.IsNullOrEmpty(device.Device.Name))
{
return(false);
}
foreach (string type in DeviceType)
{
if (device.Device.Name.Contains(type))
{
return(true);
}
}
return(false);
}
private double CalculateDistance(VDevice device)
{
int RSSI = device.Device.Rssi;
double MeasuredPower = -65;
double N = 2.4;
double one = MeasuredPower - RSSI;
double two = 10 * N;
double resutltPartOne = one / two;
double distance = Math.Pow(10, resutltPartOne);
distance = Math.Round(distance, 2);
if (distance <= 1.50)
{
SendNotification(device.Device.NativeDevice + ", dis:" + distance);
SendVibrateAlert();
Console.WriteLine("--------Alert--------------------#" + RSSI + "#: " + distance + "-----------------------------------\n");
}
return(distance);
}
private async void ScanAndCheckAsync()
{
StatusActivityIndicator.IsRunning = true;
StatusActivityIndicator.IsVisible = true;
devices.Clear();
LbStatus.Text = "devices cleard";
Console.WriteLine("----------------------------devices cleard------------------------------------\n");
adapter.DeviceDiscovered += (s, a) =>
{
IDevice device = a.Device;
VDevice vDevice = new VDevice()
{
Device = device, Distance = 0
};
if (!devices.Contains(vDevice) && !FilterDevices(vDevice))
{
vDevice.Distance = CalculateDistance(vDevice);
devices.Add(vDevice);
Console.WriteLine("----------------------------Device Added------------------------------------\n");
}
};
if (!ble.Adapter.IsScanning)
{
Console.WriteLine("----------------------------Scan started------------------------------------\n");
adapter.ScanMode = ScanMode.Balanced;
LbStatus.Text = "Scaning";
adapter.ScanTimeout = 10000;
await adapter.StartScanningForDevicesAsync();
}
DevicesListView.ItemsSource = devices;
StatusActivityIndicator.IsRunning = false;
StatusActivityIndicator.IsVisible = false;
LbStatus.Text = "Rescaning in 10s";
}
