public async Task <bool> StartServer(e_BtMode mode)
{
try
{
if (!Init())
{
return(false);
}
if (mode == e_BtMode.LowEnergy)
{
var uuid_ser = Java.Util.UUID.FromString(BleConstants.BLE_SERVER_SERVICE_UUID);
var uuid_ch = Java.Util.UUID.FromString(BleConstants.BLE_SERVER_CH_UUID);
/// Set advertising
AdvertiseSettings settings = new AdvertiseSettings.Builder()
.SetConnectable(true)
.SetAdvertiseMode(AdvertiseMode.LowLatency)
.SetTxPowerLevel(AdvertiseTx.PowerMedium)
.Build();
AdvertiseData advertiseData = new AdvertiseData.Builder()
.SetIncludeDeviceName(true)
.SetIncludeTxPowerLevel(true)
.Build();
AdvertiseData scanResponseData = new AdvertiseData.Builder()
//.AddServiceUuid(new ParcelUuid(uuid_ser)) //otherwise AdvertiseFailure for DataTooLarge
//.AddServiceData(new ParcelUuid(uuid_ser), new byte[] { 0x01, 0x02 })
.SetIncludeDeviceName(true)
.SetIncludeTxPowerLevel(true)
.Build();
_CentralManager.Adapter.BluetoothLeAdvertiser.StartAdvertising(settings, advertiseData, scanResponseData, _AdvertiseCallback);
/// Set ble server
_GattServer = _CentralManager.OpenGattServer(Android.App.Application.Context, _GattServerCallback);
_Mode = mode;
var write_ch = new BluetoothGattCharacteristic(uuid_ch, GattProperty.WriteNoResponse, GattPermission.Write);
var service = new BluetoothGattService(uuid_ser, GattServiceType.Primary);
service.AddCharacteristic(write_ch);
_GattServer.AddService(service);
}
else if (mode == e_BtMode.Socket)
{
_Mode = mode;
_ServerSocket = _CentralManager.Adapter.ListenUsingRfcommWithServiceRecord("server_socket", Java.Util.UUID.FromString(BleConstants.BLE_SERVER_SOCKET_UUID));
_BluetoothSocket = await _ServerSocket.AcceptAsync();
await Task.Run(ServerSocketManager);
}
else
{
SERVER_ERR("start server failed");
return(false);
}
return(true);
}
catch (Exception ex)
{
SERVER_ERR("start server error", ex);
return(false);
}
}
public async Task <bool> StartConnection(string name, string address, int timeoutMs, e_BtMode mode)
{
try
{
if (!BleEnabled)
{
BLE_ERR("can't start connection, ble not enabled");
return(false);
}
if (!Init())
{
return(false);
}
if (string.IsNullOrEmpty(name) && string.IsNullOrEmpty(address))
{
BLE_ERR("can't start connection, ble device not valid");
return(false);
}
BluetoothDevice device = null;
if (string.IsNullOrEmpty(address))
{
device = _Devices.Find(x => x.Name == name);
}
else
{
device = _Devices.Find(x => x.Address == address);
}
if (device == null)
{
BLE_ERR("can't start connection, device not found");
return(false);
}
bool completed = false;
if (mode == e_BtMode.LowEnergy)
{
BLE("connecting to " + name + " via ble");
_Mode = mode;
device.ConnectGatt(Android.App.Application.Context, false, _ConnectCallback, BluetoothTransports.Le);
_Semaphore = new SemaphoreSlim(0, 1);
completed = await _Semaphore.WaitAsync(timeoutMs);
_Semaphore = null;
}
else if (mode == e_BtMode.Socket)
{
BLE("connecting to " + name + " via socket");
_Mode = mode;
_BluetoothSocket = device.CreateRfcommSocketToServiceRecord(Java.Util.UUID.FromString(BleConstants.BLE_SERVER_SOCKET_UUID));
await _BluetoothSocket.ConnectAsync();
completed = true;
_IsConnected = _BluetoothSocket.IsConnected;
}
if (completed && _IsConnected)
{
return(true);
}
BLE_ERR("connection failed");
return(false);
}
catch (Exception ex)
{
BLE_ERR("start connection error", ex);
return(false);
}
}
