19908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta/* 29908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Copyright (C) 2013 The Android Open Source Project 39908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 49908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Licensed under the Apache License, Version 2.0 (the "License"); 59908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * you may not use this file except in compliance with the License. 69908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * You may obtain a copy of the License at 79908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 89908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * http://www.apache.org/licenses/LICENSE-2.0 99908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Unless required by applicable law or agreed to in writing, software 119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * distributed under the License is distributed on an "AS IS" BASIS, 129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * See the License for the specific language governing permissions and 149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * limitations under the License. 159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battapackage android.bluetooth; 179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battaimport java.util.ArrayList; 199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battaimport java.util.List; 209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battaimport java.util.UUID; 219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta/** 23ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * Represents a Bluetooth GATT Characteristic 2433ec9840c70ddc7cd008ecf2660c441defc5f302Matthew Xie * 2533ec9840c70ddc7cd008ecf2660c441defc5f302Matthew Xie * <p>A GATT characteristic is a basic data element used to construct a GATT service, 2633ec9840c70ddc7cd008ecf2660c441defc5f302Matthew Xie * {@link BluetoothGattService}. The characteristic contains a value as well as 2733ec9840c70ddc7cd008ecf2660c441defc5f302Matthew Xie * additional information and optional GATT descriptors, {@link BluetoothGattDescriptor}. 289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Battapublic class BluetoothGattCharacteristic { 309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic proprty: Characteristic is broadcastable. 339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_BROADCAST = 0x01; 359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic is readable. 389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_READ = 0x02; 409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic can be written without response. 439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_WRITE_NO_RESPONSE = 0x04; 459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic can be written. 489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_WRITE = 0x08; 509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic supports notification 539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_NOTIFY = 0x10; 559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic supports indication 589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_INDICATE = 0x20; 609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic supports write with signature 639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_SIGNED_WRITE = 0x40; 659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic property: Characteristic has extended properties 689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PROPERTY_EXTENDED_PROPS = 0x80; 709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic read permission 739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_READ = 0x01; 759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow encrypted read operations 789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_READ_ENCRYPTED = 0x02; 809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow reading with man-in-the-middle protection 839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_READ_ENCRYPTED_MITM = 0x04; 859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic write permission 889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE = 0x10; 909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow encrypted writes 939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE_ENCRYPTED = 0x20; 959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow encrypted writes with man-in-the-middle 989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * protection 999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE_ENCRYPTED_MITM = 0x40; 1019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow signed write operations 1049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE_SIGNED = 0x80; 1069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permission: Allow signed write operations with 1099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * man-in-the-middle protection 1109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int PERMISSION_WRITE_SIGNED_MITM = 0x100; 1129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Write characteristic, requesting acknoledgement by the remote device 1159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int WRITE_TYPE_DEFAULT = 0x02; 1179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Wrtite characteristic without requiring a response by the remote device 1209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int WRITE_TYPE_NO_RESPONSE = 0x01; 1229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 124ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * Write characteristic including authentication signature 1259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int WRITE_TYPE_SIGNED = 0x04; 1279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type uint8 1309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_UINT8 = 0x11; 1329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type uint16 1359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_UINT16 = 0x12; 1379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type uint32 1409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_UINT32 = 0x14; 1429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type sint8 1459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_SINT8 = 0x21; 1479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type sint16 1509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_SINT16 = 0x22; 1529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type sint32 1559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_SINT32 = 0x24; 1579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type sfloat (16-bit float) 1609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_SFLOAT = 0x32; 1629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic value format type float (32-bit float) 1659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public static final int FORMAT_FLOAT = 0x34; 1679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * The UUID of this characteristic. 1719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected UUID mUuid; 1749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Instance ID for this characteristic. 1779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mInstance; 1809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic properties. 1839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mProperties; 1869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Characteristic permissions. 1899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mPermissions; 1929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 1949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Key size (default = 16). 1959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 1969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 1979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mKeySize = 16; 1989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 1999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Write type for this characteristic. 2019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * See WRITE_TYPE_* constants. 2029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected int mWriteType; 2059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Back-reference to the service this characteristic belongs to. 2089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected BluetoothGattService mService; 2119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * The cached value of this characteristic. 2149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected byte[] mValue; 2179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * List of descriptors included in this characteristic. 2209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta protected List<BluetoothGattDescriptor> mDescriptors; 2229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 224ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * Create a new BluetoothGattCharacteristic. 225ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 226ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * 227ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * @param uuid The UUID for this characteristic 228ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * @param properties Properties of this characteristic 229ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * @param permissions Permissions for this characteristic 230ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie */ 231ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie public BluetoothGattCharacteristic(UUID uuid, int properties, int permissions) { 232ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie initCharacteristic(null, uuid, 0, properties, permissions); 233ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie } 234ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie 235ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie /** 2369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Create a new BluetoothGattCharacteristic 2379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /*package*/ BluetoothGattCharacteristic(BluetoothGattService service, 2409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta UUID uuid, int instanceId, 2419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int properties, int permissions) { 242ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie initCharacteristic(service, uuid, instanceId, properties, permissions); 243ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie } 244ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie 245ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie private void initCharacteristic(BluetoothGattService service, 246ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie UUID uuid, int instanceId, 247ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie int properties, int permissions) { 2489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mUuid = uuid; 2499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mInstance = instanceId; 2509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mProperties = properties; 2519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mPermissions = permissions; 2529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mService = service; 2539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue = null; 2549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mDescriptors = new ArrayList<BluetoothGattDescriptor>(); 2559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if ((mProperties & PROPERTY_WRITE_NO_RESPONSE) != 0) { 2579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mWriteType = WRITE_TYPE_NO_RESPONSE; 2589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } else { 2599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mWriteType = WRITE_TYPE_DEFAULT; 2609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 2649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the deisred key size. 2659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @hide 2669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 2679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /*package*/ int getKeySize() { 2689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mKeySize; 2699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 272ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * Adds a descriptor to this characteristic. 273ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * <p>Requires {@link android.Manifest.permission#BLUETOOTH} permission. 274ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * 275ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * @param descriptor Descriptor to be added to this characteristic. 276ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * @return true, if the descriptor was added to the characteristic 2779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 278ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie public boolean addDescriptor(BluetoothGattDescriptor descriptor) { 2799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mDescriptors.add(descriptor); 280ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie descriptor.setCharacteristic(this); 281ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie return true; 2829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 2839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 2849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 28525b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach * Get a descriptor by UUID and isntance id. 28625b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach * @hide 28725b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach */ 28825b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach /*package*/ BluetoothGattDescriptor getDescriptor(UUID uuid, int instanceId) { 28925b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach for(BluetoothGattDescriptor descriptor : mDescriptors) { 29025b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach if (descriptor.getUuid().equals(uuid) 29125b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach && descriptor.getInstanceId() == instanceId) { 29225b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach return descriptor; 29325b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach } 29425b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach } 29525b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach return null; 29625b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach } 29725b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach 29825b9cf953bd3e97f726f8c27d7a752b27c9a2373Andre Eisenbach /** 2999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the service this characteristic belongs to. 3009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return The asscociated service 3019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public BluetoothGattService getService() { 3039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mService; 3049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 307ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * Sets the service associated with this device. 308ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * @hide 309ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie */ 310ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie /*package*/ void setService(BluetoothGattService service) { 311ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie mService = service; 312ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie } 313ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie 314ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie /** 3159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the UUID of this characteristic 3169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return UUID of this characteristic 3189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public UUID getUuid() { 3209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mUuid; 3219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the instance ID for this characteristic. 3259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>If a remote device offers multiple characteristics with the same UUID, 3279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * the instance ID is used to distuinguish between characteristics. 3289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Instance ID of this characteristic 3309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public int getInstanceId() { 3329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mInstance; 3339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the properties of this characteristic. 3379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>The properties contain a bit mask of property flags indicating 3399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * the features of this characteristic. 3409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Properties of this characteristic 3429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public int getProperties() { 3449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mProperties; 3459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the permissions for this characteristic. 3499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Permissions of this characteristic 3519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public int getPermissions() { 3539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mPermissions; 3549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Gets the write type for this characteristic. 3589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Write type for this characteristic 3609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public int getWriteType() { 3629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mWriteType; 3639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 3669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Set the write type for this characteristic 3679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>Setting the write type of a characteristic determines how the 3699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link BluetoothGatt#writeCharacteristic} function write this 3709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * characteristic. 3719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param writeType The write type to for this characteristic. Can be one 3739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * of: 3749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link #WRITE_TYPE_DEFAULT}, 3759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link #WRITE_TYPE_NO_RESPONSE} or 3769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link #WRITE_TYPE_SIGNED}. 3779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public void setWriteType(int writeType) { 3799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mWriteType = writeType; 3809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 383ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * Set the desired key size. 384ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * @hide 385ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie */ 386ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie public void setKeySize(int keySize) { 387ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie mKeySize = keySize; 388ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie } 389ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie 390ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie /** 3919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns a list of descriptors for this characteristic. 3929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 3939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Descriptors for this characteristic 3949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 3959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public List<BluetoothGattDescriptor> getDescriptors() { 3969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mDescriptors; 3979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 3989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 3999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 4009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns a descriptor with a given UUID out of the list of 4019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * descriptors for this characteristic. 4029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 403ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * @return GATT descriptor object or null if no descriptor with the 4049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * given UUID was found. 4059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 4069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public BluetoothGattDescriptor getDescriptor(UUID uuid) { 4079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta for(BluetoothGattDescriptor descriptor : mDescriptors) { 4089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (descriptor.getUuid().equals(uuid)) { 4099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return descriptor; 4109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return null; 4139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 4169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Get the stored value for this characteristic. 4179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>This function returns the stored value for this characteristic as 419ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * retrieved by calling {@link BluetoothGatt#readCharacteristic}. The cached 4209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * value of the characteristic is updated as a result of a read characteristic 4219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * operation or if a characteristic update notification has been received. 4229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Cached value of the characteristic 4249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 4259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public byte[] getValue() { 4269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return mValue; 4279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 4309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Return the stored value of this characteristic. 4319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>The formatType parameter determines how the characteristic value 4339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * is to be interpreted. For example, settting formatType to 4349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link #FORMAT_UINT16} specifies that the first two bytes of the 4359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * characteristic value at the given offset are interpreted to generate the 4369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * return value. 4379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param formatType The format type used to interpret the characteristic 4399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * value. 4409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the integer value can be found. 4419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Cached value of the characteristic or null of offset exceeds 4429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * value size. 4439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 4449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public Integer getIntValue(int formatType, int offset) { 4459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if ((offset + getTypeLen(formatType)) > mValue.length) return null; 4469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta switch (formatType) { 4489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT8: 4499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedByteToInt(mValue[offset]); 4509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT16: 4529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedBytesToInt(mValue[offset], mValue[offset+1]); 4539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT32: 4559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedBytesToInt(mValue[offset], mValue[offset+1], 4569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset+2], mValue[offset+3]); 4579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT8: 4589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedToSigned(unsignedByteToInt(mValue[offset]), 8); 4599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT16: 4619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedToSigned(unsignedBytesToInt(mValue[offset], 4629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset+1]), 16); 4639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT32: 4659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsignedToSigned(unsignedBytesToInt(mValue[offset], 4669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset+1], mValue[offset+2], mValue[offset+3]), 32); 4679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return null; 4709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 4739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Return the stored value of this characteristic. 4749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #getValue} for details. 4759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 4769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param formatType The format type used to interpret the characteristic 4779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * value. 4789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the float value can be found. 4799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Cached value of the characteristic at a given offset or null 4809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * if the requested offset exceeds the value size. 4819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 4829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public Float getFloatValue(int formatType, int offset) { 4839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if ((offset + getTypeLen(formatType)) > mValue.length) return null; 4849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta switch (formatType) { 4869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SFLOAT: 4879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return bytesToFloat(mValue[offset], mValue[offset+1]); 4889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_FLOAT: 4909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return bytesToFloat(mValue[offset], mValue[offset+1], 4919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset+2], mValue[offset+3]); 4929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return null; 4959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 4969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 4979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 4989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Return the stored value of this characteristic. 4999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #getValue} for details. 500ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * 5019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the string value can be found. 5029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return Cached value of the characteristic 5039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 5049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public String getStringValue(int offset) { 5050fd06a19bdc56fec8eb736d248abb56fe5a2727dAndre Eisenbach if (mValue == null || offset > mValue.length) return null; 5069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta byte[] strBytes = new byte[mValue.length - offset]; 5079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta for (int i=0; i != (mValue.length-offset); ++i) strBytes[i] = mValue[offset+i]; 5089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return new String(strBytes); 5099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 5109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 5129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Updates the locally stored value of this characteristic. 5139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 5149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>This function modifies the locally stored cached value of this 5159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * characteristic. To send the value to the remote device, call 5169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * {@link BluetoothGatt#writeCharacteristic} to send the value to the 5179908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * remote device. 5189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 5199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param value New value for this characteristic 5209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return true if the locally stored value has been set, false if the 5219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * requested value could not be stored locally. 5229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 5239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public boolean setValue(byte[] value) { 5249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue = value; 5259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return true; 5269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 5279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 5299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Set the locally stored value of this characteristic. 5309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #setValue(byte[])} for details. 5319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * 5329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param value New value for this characteristic 5339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param formatType Integer format type used to transform the value parameter 5349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the value should be placed 5359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return true if the locally stored value has been set 5369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 5379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public boolean setValue(int value, int formatType, int offset) { 5389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int len = offset + getTypeLen(formatType); 5399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (mValue == null) mValue = new byte[len]; 5409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (len > mValue.length) return false; 5419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta switch (formatType) { 5439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT8: 5449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta value = intToSignedBits(value, 8); 5459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta // Fall-through intended 5469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT8: 5479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] = (byte)(value & 0xFF); 5489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 5499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT16: 5519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta value = intToSignedBits(value, 16); 5529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta // Fall-through intended 5539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT16: 5549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)(value & 0xFF); 5559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] = (byte)((value >> 8) & 0xFF); 5569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 5579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SINT32: 5599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta value = intToSignedBits(value, 32); 5609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta // Fall-through intended 5619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_UINT32: 5629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)(value & 0xFF); 5639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)((value >> 8) & 0xFF); 5643f36660a60ce065b71f6d5eb24911012b6d66fddAndre Eisenbach mValue[offset++] = (byte)((value >> 16) & 0xFF); 5653f36660a60ce065b71f6d5eb24911012b6d66fddAndre Eisenbach mValue[offset] = (byte)((value >> 24) & 0xFF); 5669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 5679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta default: 5699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return false; 5709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 5719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return true; 5729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 5739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 5759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Set the locally stored value of this characteristic. 5769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #setValue(byte[])} for details. 577ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * 5789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param mantissa Mantissa for this characteristic 5799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param exponent exponent value for this characteristic 5809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param formatType Float format type used to transform the value parameter 5819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param offset Offset at which the value should be placed 5829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return true if the locally stored value has been set 5839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 5849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public boolean setValue(int mantissa, int exponent, int formatType, int offset) { 5859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int len = offset + getTypeLen(formatType); 5869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (mValue == null) mValue = new byte[len]; 5879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (len > mValue.length) return false; 5889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta switch (formatType) { 5909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_SFLOAT: 5919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mantissa = intToSignedBits(mantissa, 12); 5929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta exponent = intToSignedBits(exponent, 4); 5939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)(mantissa & 0xFF); 5949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] = (byte)((mantissa >> 8) & 0x0F); 5959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] += (byte)((exponent & 0x0F) << 4); 5969908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 5979908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 5989908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta case FORMAT_FLOAT: 5999908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mantissa = intToSignedBits(mantissa, 24); 6009908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta exponent = intToSignedBits(exponent, 8); 6019908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)(mantissa & 0xFF); 6029908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)((mantissa >> 8) & 0xFF); 6039908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset++] = (byte)((mantissa >> 16) & 0xFF); 6049908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue[offset] += (byte)(exponent & 0xFF); 6059908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta break; 6069908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6079908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta default: 6089908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return false; 6099908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6109908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6119908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return true; 6129908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6139908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6149908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6159908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Set the locally stored value of this characteristic. 6169908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * <p>See {@link #setValue(byte[])} for details. 617ddf7e4756c31d0ed90802f98abeaa79df6d16b2aMatthew Xie * 6189908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @param value New value for this characteristic 6199908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * @return true if the locally stored value has been set 6209908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6219908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta public boolean setValue(String value) { 6229908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta mValue = value.getBytes(); 6239908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return true; 6249908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6259908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6269908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6279908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Returns the size of a give value type. 6289908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6299908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int getTypeLen(int formatType) { 6309908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return formatType & 0xF; 6319908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6329908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6339908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6349908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert a signed byte to an unsigned int. 6359908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6369908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int unsignedByteToInt(byte b) { 6379908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return b & 0xFF; 6389908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6399908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6409908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6419908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert signed bytes to a 16-bit unsigned int. 6429908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6439908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int unsignedBytesToInt(byte b0, byte b1) { 6449908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return (unsignedByteToInt(b0) + (unsignedByteToInt(b1) << 8)); 6459908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6469908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6479908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6489908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert signed bytes to a 32-bit unsigned int. 6499908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6509908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int unsignedBytesToInt(byte b0, byte b1, byte b2, byte b3) { 6519908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return (unsignedByteToInt(b0) + (unsignedByteToInt(b1) << 8)) 6529908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta + (unsignedByteToInt(b2) << 16) + (unsignedByteToInt(b3) << 24); 6539908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6549908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6559908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6569908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert signed bytes to a 16-bit short float value. 6579908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6589908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private float bytesToFloat(byte b0, byte b1) { 6599908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int mantissa = unsignedToSigned(unsignedByteToInt(b0) 6609908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta + ((unsignedByteToInt(b1) & 0x0F) << 8), 12); 6619908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int exponent = unsignedToSigned(unsignedByteToInt(b1) >> 4, 4); 6629908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return (float)(mantissa * Math.pow(10, exponent)); 6639908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6649908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6659908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6669908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert signed bytes to a 32-bit short float value. 6679908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6689908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private float bytesToFloat(byte b0, byte b1, byte b2, byte b3) { 6699908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta int mantissa = unsignedToSigned(unsignedByteToInt(b0) 6709908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta + (unsignedByteToInt(b1) << 8) 6719908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta + (unsignedByteToInt(b2) << 16), 24); 6729908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return (float)(mantissa * Math.pow(10, b3)); 6739908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6749908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6759908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6769908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert an unsigned integer value to a two's-complement encoded 6779908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * signed value. 6789908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6799908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int unsignedToSigned(int unsigned, int size) { 6809908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if ((unsigned & (1 << size-1)) != 0) { 6819908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta unsigned = -1 * ((1 << size-1) - (unsigned & ((1 << size-1) - 1))); 6829908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6839908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return unsigned; 6849908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6859908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta 6869908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta /** 6879908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta * Convert an integer into the signed bits of a given length. 6889908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta */ 6899908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta private int intToSignedBits(int i, int size) { 6909908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta if (i < 0) { 6919908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta i = (1 << size-1) + (i & ((1 << size-1) - 1)); 6929908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6939908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta return i; 6949908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta } 6959908112fd085d8b0d91e0562d32eebd1884f09a5Ganesh Ganapathi Batta} 696