Java Code Examples for android.bluetooth.BluetoothGatt#GATT_FAILURE

@Override
public void onConnectionStateChange(BluetoothGatt gatt, int status, int newState) {

    super.onConnectionStateChange(gatt, status, newState);
    Log.d(TAG, "onConnectionStateChange, New state : " + newState + ", Status : " + status);

    if (status == BluetoothGatt.GATT_FAILURE) {
        EventBus.getDefault().post(new DeviceConnectionEvent(ESPConstants.EVENT_DEVICE_CONNECTION_FAILED));
        return;
    } else if (status == 133) {
        EventBus.getDefault().post(new DeviceConnectionEvent(ESPConstants.EVENT_DEVICE_CONNECTION_FAILED));
        return;
    } else if (status != BluetoothGatt.GATT_SUCCESS) {
        // TODO need to check this status
        return;
    }
    if (newState == BluetoothProfile.STATE_CONNECTED) {
        Log.e(TAG, "Connected to GATT server.");
        gatt.discoverServices();
    } else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
        Log.e(TAG, "Disconnected from GATT server.");
        EventBus.getDefault().post(new DeviceConnectionEvent(ESPConstants.EVENT_DEVICE_CONNECTION_FAILED));
    }
}
 

private String getGattStatusMessage(final int status) {
    final String statusMessage;
    if (status == BluetoothGatt.GATT_SUCCESS) {
        statusMessage = "SUCCESS";
    } else if (status == BluetoothGatt.GATT_FAILURE) {
        statusMessage = "FAILED";
    } else if (status == BluetoothGatt.GATT_WRITE_NOT_PERMITTED) {
        statusMessage = "NOT PERMITTED";
    } else if (status == 133) {
        statusMessage = "Found the strange 133 bug";
    } else {
        statusMessage = "UNKNOWN (" + status + ")";
    }

    return statusMessage;
}
 

@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
    super.onServicesDiscovered(gatt, status);
    // Notify connection failure if service discovery failed.
    if (status == BluetoothGatt.GATT_FAILURE) {
        connectFailure();
        return;
    }

    // Save reference to each UART characteristic.
    tx = gatt.getService(SERIAL_SERVICE_UUID).getCharacteristic(TX_CHAR_UUID);
    rx = gatt.getService(SERIAL_SERVICE_UUID).getCharacteristic(RX_CHAR_UUID);

    enableRXNotification();
    // Notify of connection completion.
    notifyOnConnected(context);
}
 

@Test
public void testGeneral() {
    CommandResult commandResult = new CommandResult(Neatle.createUUID(1), new byte[]{22, 21}, BluetoothGatt.GATT_SUCCESS, 1234556);

    assertEquals(BluetoothGatt.GATT_SUCCESS, commandResult.getStatus());
    assertEquals(1234556, commandResult.getTimestamp());
    assertEquals(Neatle.createUUID(1), commandResult.getUUID());
    assertTrue(commandResult.wasSuccessful());
    assertNotNull(commandResult.toString());

    CommandResult commandResult2 = new CommandResult(Neatle.createUUID(1), new byte[]{22, 21}, BluetoothGatt.GATT_FAILURE, 1234556);
    assertFalse(commandResult2.wasSuccessful());
}
 

@Test
public void testSuccessful() {
    CommandResult result1 = new CommandResult(Neatle.createUUID(1), null, BluetoothGatt.GATT_SUCCESS, 0);
    CommandResult result2 = new CommandResult(Neatle.createUUID(2), null, BluetoothGatt.GATT_SUCCESS, 0);
    CommandResult result3 = new CommandResult(Neatle.createUUID(3), null, BluetoothGatt.GATT_FAILURE, 0);

    operationResults.addResult(result1);
    assertTrue(operationResults.wasSuccessful());
    operationResults.addResult(result2);
    assertTrue(operationResults.wasSuccessful());
    operationResults.addResult(result3);
    assertFalse(operationResults.wasSuccessful());
}
 

public static String getGattStatus(int status) {
    switch (status) {
        case BluetoothGatt.GATT_SUCCESS:
            return "GATT_SUCCESS";

        case BluetoothGatt.GATT_READ_NOT_PERMITTED:
            return "GATT_READ_NOT_PERMITTED";

        case BluetoothGatt.GATT_WRITE_NOT_PERMITTED:
            return "GATT_WRITE_NOT_PERMITTED";

        case BluetoothGatt.GATT_INSUFFICIENT_AUTHENTICATION:
            return "GATT_INSUFFICIENT_AUTHENTICATION";

        case BluetoothGatt.GATT_REQUEST_NOT_SUPPORTED:
            return "GATT_REQUEST_NOT_SUPPORTED";

        case BluetoothGatt.GATT_INSUFFICIENT_ENCRYPTION:
            return "GATT_INSUFFICIENT_ENCRYPTION";

        case BluetoothGatt.GATT_INVALID_OFFSET:
            return "GATT_INVALID_OFFSET";

        case BluetoothGatt.GATT_INVALID_ATTRIBUTE_LENGTH:
            return "GATT_INVALID_ATTRIBUTE_LENGTH";

        case BluetoothGatt.GATT_FAILURE:
            return "GATT_FAILURE";

        default:
            return "STATE_UNKNOWN: " + status;
    }
}
 

@Override
public int writeCharacteristic(BluetoothGattCharacteristic characteristic, int offset, byte[] value) {
  if (offset != 0) {
    return BluetoothGatt.GATT_INVALID_OFFSET;
  }
  // Measurement Interval is a 16bit characteristic
  if (value.length != 2) {
    return BluetoothGatt.GATT_INVALID_ATTRIBUTE_LENGTH;
  }
  ByteBuffer byteBuffer = ByteBuffer.wrap(value);
  byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
  final int newMeasurementIntervalValue = byteBuffer.getShort();
  if (!isValidMeasurementIntervalValue(newMeasurementIntervalValue)) {
    return BluetoothGatt.GATT_FAILURE;
  }
  getActivity().runOnUiThread(new Runnable() {
    @Override
    public void run() {
      mMeasurementIntervalCharacteristic.setValue(newMeasurementIntervalValue,
          MEASUREMENT_INTERVAL_FORMAT,
          /* offset */ 0);
      if (mMeasurementIntervalCCCDescriptor.getValue() == BluetoothGattDescriptor.ENABLE_INDICATION_VALUE) {
        resetTimer(newMeasurementIntervalValue);
        mTextViewNotifications.setText(R.string.notificationsEnabled);
      }
    }
  });
  return BluetoothGatt.GATT_SUCCESS;
}
 

public void readCharacteristic(BluetoothGattServer gattServer, BluetoothDevice device,
                                   int requestId, int offset,
                                   BluetoothGattCharacteristic characteristic) {
//        UUID uuid = characteristic.getUuid();
        int status =  BluetoothGatt.GATT_SUCCESS;

        if (isLocked()) {
            if (characteristic == mUnlockCharacteristic) {
                log("Generating secure unlock challenge");
                characteristic.setValue(new byte[16]);
                new SecureRandom().nextBytes(characteristic.getValue());
            } else {
                if (characteristic != mLockStateCharacteristic) {
                    status = BluetoothGatt.GATT_READ_NOT_PERMITTED;
                }
            }
        }
        else if (characteristic == mUnlockCharacteristic) {
            status = BluetoothGatt.GATT_READ_NOT_PERMITTED;
        } else if (characteristic == mPublicEcdhKeyCharacteristic) {
            log("ECDH Public Key was requested");
            if (0 == offset) {
                characteristic.setValue(null == mEidKeyPair ? new byte[0] : mEidKeyPair.getPublicKey());
            }
        } else if (characteristic == mAdvSlotDataCharacteristic) {
            log("Advertisement slot data requested");
            characteristic.setValue(mConfigCallback.getAdvertisedData());
        } else if (characteristic  == mEidIdentityKeyCharacteristic) {
            log("Identity Key was requested");
            byte[] identityKey = mConfigCallback.getEidIdentityKey();
            if (null == identityKey) {
                status = BluetoothGatt.GATT_FAILURE;
            }
            else {
                characteristic.setValue(aes_transform(true, identityKey, 0, 16));
            }
        }

        gattServer.sendResponse(device, requestId, status, offset,
                status == BluetoothGatt.GATT_SUCCESS ? Arrays.copyOfRange(characteristic.getValue(), offset, characteristic.getValue().length) : null);
    }
 

@Override
public void onServicesDiscovered(BluetoothGatt gatt, int status) {
    super.onServicesDiscovered(gatt, status);
    // Notify connection failure if service discovery failed.
    if (status == BluetoothGatt.GATT_FAILURE) {
        connectFailure();
        return;
    }

    // Save reference to each UART characteristic.
    tx = gatt.getService(UART_UUID).getCharacteristic(TX_UUID);
    rx = gatt.getService(UART_UUID).getCharacteristic(RX_UUID);

    // Save reference to each DIS characteristic.
    disManuf = gatt.getService(DIS_UUID).getCharacteristic(DIS_MANUF_UUID);
    disModel = gatt.getService(DIS_UUID).getCharacteristic(DIS_MODEL_UUID);
    disHWRev = gatt.getService(DIS_UUID).getCharacteristic(DIS_HWREV_UUID);
    disSWRev = gatt.getService(DIS_UUID).getCharacteristic(DIS_SWREV_UUID);

    // Add device information characteristics to the read queue
    // These need to be queued because we have to wait for the response to the first
    // read request before a second one can be processed (which makes you wonder why they
    // implemented this with async logic to begin with???)
    readQueue.offer(disManuf);
    readQueue.offer(disModel);
    readQueue.offer(disHWRev);
    readQueue.offer(disSWRev);

    // Request a dummy read to get the device information queue going
    gatt.readCharacteristic(disManuf);

    // Setup notifications on RX characteristic changes (i.e. data received).
    // First call setCharacteristicNotification to enable notification.
    if (!gatt.setCharacteristicNotification(rx, true)) {
        // Stop if the characteristic notification setup failed.
        connectFailure();
        return;
    }
    // Next update the RX characteristic's client descriptor to enable notifications.
    BluetoothGattDescriptor desc = rx.getDescriptor(CLIENT_UUID);
    if (desc == null) {
        // Stop if the RX characteristic has no client descriptor.
        connectFailure();
        return;
    }
    desc.setValue(BluetoothGattDescriptor.ENABLE_NOTIFICATION_VALUE);
    if (!gatt.writeDescriptor(desc)) {
        // Stop if the client descriptor could not be written.
        connectFailure();
        return;
    }
    // Notify of connection completion.
    notifyOnConnected(this);
}