Example usage for android.bluetooth BluetoothGatt writeDescriptor

List of usage examples for android.bluetooth BluetoothGatt writeDescriptor

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Introduction

In this page you can find the example usage for android.bluetooth BluetoothGatt writeDescriptor.

Prototype

public boolean writeDescriptor(BluetoothGattDescriptor descriptor)

Source Link

Document

Write the value of a given descriptor to the associated remote device.

Usage

From source file:Main.java

public static boolean disableNotification(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
    BluetoothGattDescriptor descriptor = configDescriptor(characteristic);
    descriptor.setValue(BluetoothGattDescriptor.DISABLE_NOTIFICATION_VALUE);
    return gatt.writeDescriptor(descriptor) && gatt.setCharacteristicNotification(characteristic, false);
}

From source file:Main.java

public static boolean enableNotification(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic) {
    BluetoothGattDescriptor descriptor = configDescriptor(characteristic);
    descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
    return gatt.setCharacteristicNotification(characteristic, true) && gatt.writeDescriptor(descriptor);
}

From source file:Main.java

@TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR2)
static boolean setCharacteristicNotification(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic,
        boolean isEnabled) {
    if (characteristic != null) {
        gatt.setCharacteristicNotification(characteristic, isEnabled);
        BluetoothGattDescriptor descriptor = characteristic.getDescriptor(DEVICE_CONFIG_CHARACTERISTIC);
        if (descriptor != null) {
            descriptor.setValue(//from   ww w . jav a  2  s.  co m
                    isEnabled ? BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE : new byte[] { 0x00, 0x00 });
            return gatt.writeDescriptor(descriptor);
        } else
            return false;
    } else
        return false;
}

From source file:com.google.android.apps.forscience.ble.MyBleService.java

public void writeValue(String address, BluetoothGattDescriptor descriptor, byte[] value) {
    BluetoothGatt bluetoothGatt = addressToGattClient.get(address);
    if (bluetoothGatt == null) {
        Log.w(TAG, "No connection found for: " + address);
        sendGattBroadcast(address, BleEvents.WRITE_DESC_FAIL, null);
        return;/*from  w  ww . j a  v a 2 s.  c  o  m*/
    }

    if (!descriptor.setValue(value) || !bluetoothGatt.writeDescriptor(descriptor)) {
        sendGattBroadcast(address, BleEvents.WRITE_DESC_FAIL, descriptor.getCharacteristic());
    }
}

From source file:com.megster.cordova.rfduino.Peripheral.java

@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
    Log.d(TAG, "gatt " + gatt);
    Log.d(TAG, "status " + status);
    super.onServicesDiscovered(gatt, status);

    BluetoothGattService service = gatt.getService(RFDUINO_SERVICE_UUID);
    Log.d(TAG, "service " + service);

    BluetoothGattCharacteristic receiveCharacteristic = service.getCharacteristic(RECEIVE_CHARACTERISTIC_UUID);
    sendCharacteristic = service.getCharacteristic(SEND_CHARACTERISTIC_UUID);
    disconnectCharacteristic = service.getCharacteristic(DISCONNECT_CHARACTERISTIC_UUID);

    if (receiveCharacteristic != null) {
        gatt.setCharacteristicNotification(receiveCharacteristic, true);

        BluetoothGattDescriptor receiveConfigDescriptor = receiveCharacteristic
                .getDescriptor(CLIENT_CHARACTERISTIC_CONFIGURATION_UUID);
        if (receiveConfigDescriptor != null) {
            receiveConfigDescriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
            gatt.writeDescriptor(receiveConfigDescriptor);
        } else {//from w  w  w  .j av  a2  s . c om
            LOG.e(TAG, "Receive Characteristic can not be configured.");
        }
    } else {
        LOG.e(TAG, "Receive Characteristic is missing.");
    }

    // call the success callback for connect
    PluginResult result = new PluginResult(PluginResult.Status.OK);
    result.setKeepCallback(true);
    connectCallback.sendPluginResult(result);
}

From source file:ble.AndroidBle.java

@Override
public boolean characteristicNotification(String address, BleGattCharacteristic characteristic) {
    BleRequest request = mService.getCurrentRequest();
    BluetoothGatt gatt = mBluetoothGatts.get(address);
    if (gatt == null || characteristic == null) {
        return false;
    }/*from www .j  a v  a2s  . co m*/

    boolean enable = true;
    if (request.type == RequestType.CHARACTERISTIC_STOP_NOTIFICATION) {
        enable = false;
    }
    BluetoothGattCharacteristic c = characteristic.getGattCharacteristicA();
    if (!gatt.setCharacteristicNotification(c, enable)) {
        return false;
    }

    BluetoothGattDescriptor descriptor = c.getDescriptor(BleService.DESC_CCC);
    if (descriptor == null) {
        return false;
    }

    byte[] val_set = null;
    if (request.type == RequestType.CHARACTERISTIC_NOTIFICATION) {
        val_set = BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE;
    } else if (request.type == RequestType.CHARACTERISTIC_INDICATION) {
        val_set = BluetoothGattDescriptor.ENABLE_INDICATION_VALUE;
    } else {
        val_set = BluetoothGattDescriptor.DISABLE_NOTIFICATION_VALUE;
    }
    if (!descriptor.setValue(val_set)) {
        return false;
    }

    return gatt.writeDescriptor(descriptor);
}

From source file:no.nordicsemi.android.nrftoolbox.dfu.DfuService.java

/**
 * Enables or disables the notifications for given characteristic. This method is SYNCHRONOUS and wait until the
 * {@link BluetoothGattCallback#onDescriptorWrite(BluetoothGatt, BluetoothGattDescriptor, int)} will be called or the connection state will change from {@link #STATE_CONNECTED_AND_READY}. If
 * connection state will change, or an error will occur, an exception will be thrown.
 * //from  w  ww.jav  a  2 s .  co m
 * @param gatt
 *            the GATT device
 * @param characteristic
 *            the characteristic to enable or disable notifications for
 * @param enable
 *            <code>true</code> to enable notifications, <code>false</code> to disable them
 * @throws DfuException
 * @throws UploadAbortedException
 */
private void setCharacteristicNotification(final BluetoothGatt gatt,
        final BluetoothGattCharacteristic characteristic, final boolean enable)
        throws DeviceDisconnectedException, DfuException, UploadAbortedException {
    if (mConnectionState != STATE_CONNECTED_AND_READY)
        throw new DeviceDisconnectedException("Unable to set notifications state", mConnectionState);
    mErrorState = 0;

    if (mNotificationsEnabled == enable)
        return;

    logi((enable ? "Enabling " : "Disabling") + " notifications...");

    // enable notifications locally
    gatt.setCharacteristicNotification(characteristic, enable);

    // enable notifications on the device
    final BluetoothGattDescriptor descriptor = characteristic.getDescriptor(CLIENT_CHARACTERISTIC_CONFIG);
    descriptor.setValue(enable ? BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE
            : BluetoothGattDescriptor.DISABLE_NOTIFICATION_VALUE);
    gatt.writeDescriptor(descriptor);

    // We have to wait until device gets disconnected or an error occur
    try {
        synchronized (mLock) {
            while ((mNotificationsEnabled != enable && mConnectionState == STATE_CONNECTED_AND_READY
                    && mErrorState == 0 && !mAborted) || mPaused)
                mLock.wait();
        }
    } catch (final InterruptedException e) {
        loge("Sleeping interrupted", e);
    }
    if (mAborted)
        throw new UploadAbortedException();
    if (mErrorState != 0)
        throw new DfuException("Unable to set notifications state", mErrorState);
    if (mConnectionState != STATE_CONNECTED_AND_READY)
        throw new DeviceDisconnectedException("Unable to set notifications state", mConnectionState);
}

From source file:com.nbplus.iotapp.bluetooth.BluetoothLeService.java

/**
 * Enables or disables notification on a give characteristic.
 *
 * @param enabled If true, enable notification.  False otherwise.
 *//*from ww w  .  j a  va2s.c om*/
public boolean setCharacteristicNotification(String address, String serviceUuid, String characteristicUuid,
        boolean enabled) {
    Log.d(TAG, "writeRemoteCharacteristic add = " + address + ", svc = " + serviceUuid + ", char = "
            + characteristicUuid);
    if (StringUtils.isEmptyString(address) || StringUtils.isEmptyString(serviceUuid)
            || StringUtils.isEmptyString(characteristicUuid)) {
        Log.w(TAG, "Unknown parameter");
        return false;
    }
    BluetoothGatt bluetoothGatt = mConnectedBluetoothGattMap.get(address);
    if (mBluetoothAdapter == null || bluetoothGatt == null) {
        Log.w(TAG, "BluetoothAdapter not initialized");
        return false;
    }
    BluetoothGattService service = bluetoothGatt.getService(UUID.fromString(serviceUuid));
    if (service == null) {
        Log.w(TAG, "Service not found.");
        return false;
    }
    BluetoothGattCharacteristic characteristic = service.getCharacteristic(UUID.fromString(characteristicUuid));
    if (characteristic == null) {
        Log.w(TAG, "characteristic not found.");
        return false;
    }

    bluetoothGatt.setCharacteristicNotification(characteristic, enabled);

    final int charaProp = characteristic.getProperties();
    if ((charaProp & BluetoothGattCharacteristic.PROPERTY_NOTIFY) > 0) {
        BluetoothGattDescriptor descriptor = characteristic
                .getDescriptor(UUID.fromString(GattAttributes.CLIENT_CHARACTERISTIC_CONFIG));
        if (descriptor != null) {
            Log.d(TAG, ">>>> ENABLE_NOTIFICATION_VALUE : " + characteristic.getUuid().toString());
            descriptor.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
            bluetoothGatt.writeDescriptor(descriptor);

            return true;
        } else {
            return false;
        }
    } else if ((charaProp & BluetoothGattCharacteristic.PROPERTY_INDICATE) > 0) {
        BluetoothGattDescriptor descriptor = characteristic
                .getDescriptor(UUID.fromString(GattAttributes.CLIENT_CHARACTERISTIC_CONFIG));
        if (descriptor != null) {
            Log.d(TAG, ">>>> ENABLE_INDICATION_VALUE : " + characteristic.getUuid().toString());
            descriptor.setValue(BluetoothGattDescriptor.ENABLE_INDICATION_VALUE);
            bluetoothGatt.writeDescriptor(descriptor);

            return true;
        } else {
            return false;
        }
    } else {
        return false;
    }
}

From source file:com.wolkabout.hexiwear.service.BluetoothService.java

private void createGATT(final BluetoothDevice device) {
    bluetoothGatt = device.connectGatt(this, true, new BluetoothGattCallback() {
        @Override/*from  w  ww  .  j ava2  s.co  m*/
        public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {
            isConnected = BluetoothProfile.STATE_CONNECTED == newState;
            if (isConnected) {
                Log.i(TAG, "GATT connected.");
                startForeground(442, getNotification(device));
                gatt.discoverServices();
            } else {
                Log.i(TAG, "GATT disconnected.");
                NotificationService_.intent(BluetoothService.this).stop();
                notificationManager.notify(442, getNotification(device));
                gatt.connect();
            }

            final Intent connectionStateChanged = new Intent(CONNECTION_STATE_CHANGED);
            connectionStateChanged.putExtra(CONNECTION_STATE, isConnected);
            sendBroadcast(connectionStateChanged);
        }

        @Override
        public void onServicesDiscovered(BluetoothGatt gatt, int status) {
            Log.i(TAG, "Services discovered.");
            if (status == BluetoothGatt.GATT_INSUFFICIENT_AUTHENTICATION) {
                handleAuthenticationError(gatt);
                return;
            }

            discoverCharacteristics(gatt);
        }

        @Override
        public void onCharacteristicWrite(BluetoothGatt gatt, BluetoothGattCharacteristic characteristic,
                int status) {
            Log.i(TAG, "Characteristic written: " + status);

            if (status == BluetoothGatt.GATT_INSUFFICIENT_AUTHENTICATION) {
                handleAuthenticationError(gatt);
                return;
            }

            final byte command = characteristic.getValue()[0];
            switch (command) {
            case WRITE_TIME:
                Log.i(TAG, "Time written.");
                final BluetoothGattCharacteristic batteryCharacteristic = readableCharacteristics
                        .get(Characteristic.BATTERY.getUuid());
                gatt.setCharacteristicNotification(batteryCharacteristic, true);
                for (BluetoothGattDescriptor descriptor : batteryCharacteristic.getDescriptors()) {
                    if (descriptor.getUuid().toString().startsWith("00002904")) {
                        descriptor.setValue(BluetoothGattDescriptor.ENABLE_INDICATION_VALUE);
                        gatt.writeDescriptor(descriptor);
                    }
                }
                break;
            case WRITE_NOTIFICATION:
                Log.i(TAG, "Notification sent.");
                if (notificationsQueue.isEmpty()) {
                    Log.i(TAG, "Reading characteristics...");
                    readNextCharacteristics(gatt);
                } else {
                    Log.i(TAG, "writing next notification...");
                    alertIn.setValue(notificationsQueue.poll());
                    gatt.writeCharacteristic(alertIn);
                }
                break;
            default:
                Log.w(TAG, "No such ALERT IN command: " + command);
                break;
            }
        }

        @Override
        public void onDescriptorWrite(BluetoothGatt gatt, BluetoothGattDescriptor descriptor, int status) {
            readCharacteristic(gatt, Characteristic.MANUFACTURER);
        }

        @Override
        public void onCharacteristicRead(BluetoothGatt gatt,
                final BluetoothGattCharacteristic gattCharacteristic, int status) {
            if (status == BluetoothGatt.GATT_INSUFFICIENT_AUTHENTICATION) {
                handleAuthenticationError(gatt);
                return;
            }

            final String characteristicUuid = gattCharacteristic.getUuid().toString();
            final Characteristic characteristic = Characteristic.byUuid(characteristicUuid);
            switch (characteristic) {
            case MANUFACTURER:
                manufacturerInfo.manufacturer = gattCharacteristic.getStringValue(0);
                readCharacteristic(gatt, Characteristic.FW_REVISION);
                break;
            case FW_REVISION:
                manufacturerInfo.firmwareRevision = gattCharacteristic.getStringValue(0);
                readCharacteristic(gatt, Characteristic.MODE);
                break;
            default:
                Log.v(TAG, "Characteristic read: " + characteristic.name());
                if (characteristic == Characteristic.MODE) {
                    final Mode newMode = Mode.bySymbol(gattCharacteristic.getValue()[0]);
                    if (mode != newMode) {
                        onModeChanged(newMode);
                    }
                } else {
                    onBluetoothDataReceived(characteristic, gattCharacteristic.getValue());
                }

                if (notificationsQueue.isEmpty()) {
                    readNextCharacteristics(gatt);
                } else {
                    alertIn.setValue(notificationsQueue.poll());
                    gatt.writeCharacteristic(alertIn);
                }

                break;
            }
        }

        @Override
        public void onCharacteristicChanged(BluetoothGatt gatt,
                BluetoothGattCharacteristic gattCharacteristic) {
            final String characteristicUuid = gattCharacteristic.getUuid().toString();
            final Characteristic characteristic = Characteristic.byUuid(characteristicUuid);
            Log.d(TAG, "Characteristic changed: " + characteristic);

            if (characteristic == Characteristic.BATTERY) {
                onBluetoothDataReceived(Characteristic.BATTERY, gattCharacteristic.getValue());
            }
        }
    });
}