private static async Task device_DisconnectedAsync(Device device, BlueZEventArgs e)
{
try
{
Console.WriteLine($"Disconnected from {await device.GetAddressAsync()}");
await Task.Delay(TimeSpan.FromSeconds(15));
Console.WriteLine($"Attempting to reconnect to {await device.GetAddressAsync()}...");
await device.ConnectAsync();
}
catch (Exception ex)
{
Console.Error.WriteLine(ex);
}
}
private static async Task device_ConnectedAsync(Device device, BlueZEventArgs e)
{
try
{
if (e.IsStateChange)
{
Console.WriteLine($"Connected to {await device.GetAddressAsync()}");
}
else
{
Console.WriteLine($"Already connected to {await device.GetAddressAsync()}");
}
}
catch (Exception ex)
{
Console.Error.WriteLine(ex);
}
}
private static async Task adapter_PoweredOnAsync(Adapter adapter, BlueZEventArgs e)
{
try
{
if (e.IsStateChange)
{
Console.WriteLine("Bluetooth adapter powered on.");
}
else
{
Console.WriteLine("Bluetooth adapter already powered on.");
}
Console.WriteLine("Starting scan...");
await adapter.StartDiscoveryAsync();
}
catch (Exception ex)
{
Console.Error.WriteLine(ex);
}
}
private static async Task device_ServicesResolvedAsync(Device device, BlueZEventArgs e)
{
try
{
if (e.IsStateChange)
{
Console.WriteLine($"Services resolved for {await device.GetAddressAsync()}");
}
else
{
Console.WriteLine($"Services already resolved for {await device.GetAddressAsync()}");
}
var servicesUUIDs = await device.GetUUIDsAsync();
Console.WriteLine($"Device offers {servicesUUIDs.Length} service(s).");
// foreach (var uuid in servicesUUIDs)
// {
// Console.WriteLine(uuid);
// }
var service = await device.GetServiceAsync(s_serviceUUID);
if (service == null)
{
Console.WriteLine($"Service UUID {s_serviceUUID} not found. Do you need to pair first?");
return;
}
var characteristic = await service.GetCharacteristicAsync(s_characteristicUUID);
if (characteristic == null)
{
Console.WriteLine($"Characteristic UUID {s_characteristicUUID} not found within service {s_serviceUUID}.");
return;
}
Console.WriteLine();
// Subscribe to the characteristic's value. Be notified of updates.
characteristic.Value += characteristic_Value;
// Attempt to read the current value. Some characteristics only support Notify.
byte[] value;
try
{
Console.WriteLine("Reading current characteristic value...");
value = await characteristic.GetValueAsync();
}
catch (Exception ex)
{
Console.Error.WriteLine($"Error reading characteristic value: {ex.Message}");
return;
}
PrintCharacteristicValue(s_characteristicUUID, value);
}
catch (Exception ex)
{
Console.Error.WriteLine(ex);
}
}
private Task Device_Connected(Device sender, BlueZEventArgs eventArgs)
{
throw new NotImplementedException();
}
private Task Device_ServicesResolved(Device sender, BlueZEventArgs eventArgs)
{
throw new NotImplementedException();
}
private async Task OnDisconnected(Device sender, BlueZEventArgs eventArgs)
{
Console.WriteLine($"{await sender.GetNameAsync()} has disconnected. Will attempt reconnect on next attempt.");
powerStateCharacteristic = null;
}