Usage:
  gatttool [OPTION...]

Help Options:
  -h, --help                                Show help options
  --help-all                                Show all help options
  --help-gatt                               Show all GATT commands
  --help-params                             Show all Primary Services/Characteristics arguments
  --help-char-read-write                    Show all Characteristics Value/Descriptor Read/Write arguments

GATT commands
  --primary                                 Primary Service Discovery
  --characteristics                         Characteristics Discovery
  --char-read                               Characteristics Value/Descriptor Read
  --char-write                              Characteristics Value Write Without Response (Write Command)
  --char-write-req                          Characteristics Value Write (Write Request)
  --char-desc                               Characteristics Descriptor Discovery
  --listen                                  Listen for notifications and indications

Primary Services/Characteristics arguments
  -s, --start=0x0001                        Starting handle(optional)
  -e, --end=0xffff                          Ending handle(optional)
  -u, --uuid=0x1801                         UUID16 or UUID128(optional)

Characteristics Value/Descriptor Read/Write arguments
  -a, --handle=0x0001                       Read/Write characteristic by handle(required)
  -n, --value=0x0001                        Write characteristic value (required for write operation)
  -o, --offset=N                            Offset to long read characteristic by handle

Application Options:
  -i, --adapter=hciX                        Specify local adapter interface
  -b, --device=MAC                          Specify remote Bluetooth address
  -m, --mtu=MTU                             Specify the MTU size
  -p, --psm=PSM                             Specify the PSM for GATT/ATT over BR/EDR
  -l, --sec-level=[low | medium | high]     Set security level. Default: low
  -I, --interactive                         Use interactive mode
  
  
connect         [address]                      Connect to a remote device
disconnect                                     Disconnect from a remote device
primary         [UUID]                         Primary Service Discovery
characteristics [start hnd [end hnd [UUID]]]   Characteristics Discovery
char-desc       [start hnd] [end hnd]          Characteristics Descriptor Discovery
char-read-hnd   <handle> [offset]              Characteristics Value/Descriptor Read by handle
char-read-uuid  <UUID> [start hnd] [end hnd]   Characteristics Value/Descriptor Read by UUID
char-write-req  <handle> <new value>           Characteristic Value Write (Write Request)
char-write-cmd  <handle> <new value>           Characteristic Value Write (No response)
sec-level       [low | medium | high]          Set security level. Default: low
mtu             <value>                        Exchange MTU for GATT/ATT

$ sudo hcitool lescan

$ sudo hcitool lecc A0:14:3D:0C:8E:91

$ sudo gatttool -i hci0 -b A0:14:3D:0C:8E:91 -I

cf. http://i-miss-erin.blogspot.fr/2010/12/gatttool-in-bluez-over-bredr.html
////////////////////////////////////////////////////////////////////////////////////////////////////

# cd bluez-4.101/

# apt-get install libdbus-1-dev libreadline-dev

# ./configure 

# make

# vim attrib/gattrib.c

cf. can_write_data
cf. received_data

# vim btio/btio.c

cf. socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP)

Tests :

# ./attrib/gatttool -i hci0 -b A0:14:3D:0C:8E:91 --primary
<can_write_data> id=1 opcode=0x10 : 
0x10 0x01 0x00 0xFF 0xFF 0x00 0x28 
<received_data> 20 octets : 
0x11 0x06 0x01 0x00 0x0B 0x00 0x00 0x18 0x0C 0x00 0x0F 0x00 0x01 0x18 0x10 0x00 0x22 0x00 0x0A 0x18 
<can_write_data> id=2 opcode=0x10 : 
0x10 0x23 0x00 0xFF 0xFF 0x00 0x28 
<received_data> 22 octets : 
0x11 0x14 0x23 0x00 0x41 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x00 0xFA 0xE1 0x39 
<can_write_data> id=3 opcode=0x10 : 
0x10 0x42 0x00 0xFF 0xFF 0x00 0x28 
<received_data> 8 octets : 
0x11 0x06 0x42 0x00 0x45 0x00 0x0F 0x18 
<can_write_data> id=4 opcode=0x10 : 
0x10 0x46 0x00 0xFF 0xFF 0x00 0x28 
<received_data> 22 octets : 
0x11 0x14 0x46 0x00 0x5E 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x00 0xFC 0xE1 0x39 
<can_write_data> id=5 opcode=0x10 : 
0x10 0x5F 0x00 0xFF 0xFF 0x00 0x28 
<received_data> 22 octets : 
0x11 0x14 0x5F 0x00 0x6D 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x00 0xFB 0xE1 0x39 
<can_write_data> id=6 opcode=0x10 : 
0x10 0x6E 0x00 0xFF 0xFF 0x00 0x28 
<received_data> 22 octets : 
0x11 0x14 0x6E 0x00 0x71 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x00 0xFD 0xE1 0x39 
<can_write_data> id=7 opcode=0x10 : 
0x10 0x72 0x00 0xFF 0xFF 0x00 0x28 
<received_data> 22 octets : 
0x11 0x14 0x72 0x00 0x7E 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x00 0xFE 0xE1 0x39 
<can_write_data> id=8 opcode=0x10 : 
0x10 0x7F 0x00 0xFF 0xFF 0x00 0x28 
<received_data> 22 octets : 
0x11 0x14 0x7F 0x00 0xFF 0xFF 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xB0 0x00 0x40 0x51 0x04 0xC0 0xFF 0x00 0xF0 
attr handle = 0x0001, end grp handle = 0x000b uuid: 00001800-0000-1000-8000-00805f9b34fb
attr handle = 0x000c, end grp handle = 0x000f uuid: 00001801-0000-1000-8000-00805f9b34fb
attr handle = 0x0010, end grp handle = 0x0022 uuid: 0000180a-0000-1000-8000-00805f9b34fb
attr handle = 0x0023, end grp handle = 0x0041 uuid: 39e1fa00-84a8-11e2-afba-0002a5d5c51b
attr handle = 0x0042, end grp handle = 0x0045 uuid: 0000180f-0000-1000-8000-00805f9b34fb
attr handle = 0x0046, end grp handle = 0x005e uuid: 39e1fc00-84a8-11e2-afba-0002a5d5c51b
attr handle = 0x005f, end grp handle = 0x006d uuid: 39e1fb00-84a8-11e2-afba-0002a5d5c51b
attr handle = 0x006e, end grp handle = 0x0071 uuid: 39e1fd00-84a8-11e2-afba-0002a5d5c51b
attr handle = 0x0072, end grp handle = 0x007e uuid: 39e1fe00-84a8-11e2-afba-0002a5d5c51b
attr handle = 0x007f, end grp handle = 0xffff uuid: f000ffc0-0451-4000-b000-000000000000

# ./attrib/gatttool -i hci0 -b A0:14:3D:0C:8E:91 --characteristics
<can_write_data> id=1 opcode=0x08 : 
0x08 0x01 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x07 0x02 0x00 0x0E 0x03 0x00 0x00 0x2A 0x04 0x00 0x02 0x05 0x00 0x01 0x2A 0x06 0x00 0x0A 0x07 0x00 0x02 0x2A 
<can_write_data> id=2 opcode=0x08 : 
0x08 0x07 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x07 0x08 0x00 0x0A 0x09 0x00 0x03 0x2A 0x0A 0x00 0x02 0x0B 0x00 0x04 0x2A 0x0D 0x00 0x20 0x0E 0x00 0x05 0x2A 
<can_write_data> id=3 opcode=0x08 : 
0x08 0x0E 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x07 0x11 0x00 0x02 0x12 0x00 0x23 0x2A 0x13 0x00 0x02 0x14 0x00 0x24 0x2A 0x15 0x00 0x02 0x16 0x00 0x25 0x2A 
<can_write_data> id=4 opcode=0x08 : 
0x08 0x16 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x07 0x17 0x00 0x02 0x18 0x00 0x26 0x2A 0x19 0x00 0x02 0x1A 0x00 0x27 0x2A 0x1B 0x00 0x02 0x1C 0x00 0x28 0x2A 
<can_write_data> id=5 opcode=0x08 : 
0x08 0x1C 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x07 0x1D 0x00 0x02 0x1E 0x00 0x29 0x2A 0x1F 0x00 0x02 0x20 0x00 0x2A 0x2A 0x21 0x00 0x02 0x22 0x00 0x50 0x2A 
<can_write_data> id=6 opcode=0x08 : 
0x08 0x22 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x24 0x00 0x12 0x25 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x01 0xFA 0xE1 0x39 
<can_write_data> id=7 opcode=0x08 : 
0x08 0x25 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x28 0x00 0x12 0x29 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x02 0xFA 0xE1 0x39 
<can_write_data> id=8 opcode=0x08 : 
0x08 0x29 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x2C 0x00 0x12 0x2D 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x03 0xFA 0xE1 0x39 
<can_write_data> id=9 opcode=0x08 : 
0x08 0x2D 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x30 0x00 0x12 0x31 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x04 0xFA 0xE1 0x39 
<can_write_data> id=10 opcode=0x08 : 
0x08 0x31 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x34 0x00 0x12 0x35 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x05 0xFA 0xE1 0x39 
<can_write_data> id=11 opcode=0x08 : 
0x08 0x35 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x38 0x00 0x0A 0x39 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x06 0xFA 0xE1 0x39 
<can_write_data> id=12 opcode=0x08 : 
0x08 0x39 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x3B 0x00 0x0A 0x3C 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x07 0xFA 0xE1 0x39 
<can_write_data> id=13 opcode=0x08 : 
0x08 0x3C 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x3E 0x00 0x12 0x3F 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x08 0xFA 0xE1 0x39 
<can_write_data> id=14 opcode=0x08 : 
0x08 0x3F 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 9 octets : 
0x09 0x07 0x43 0x00 0x12 0x44 0x00 0x19 0x2A 
<can_write_data> id=15 opcode=0x08 : 
0x08 0x44 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x47 0x00 0x02 0x48 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x01 0xFC 0xE1 0x39 
<can_write_data> id=16 opcode=0x08 : 
0x08 0x48 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x4B 0x00 0x02 0x4C 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x02 0xFC 0xE1 0x39 
<can_write_data> id=17 opcode=0x08 : 
0x08 0x4C 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x4F 0x00 0x0A 0x50 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x03 0xFC 0xE1 0x39 
<can_write_data> id=18 opcode=0x08 : 
0x08 0x50 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x53 0x00 0x02 0x54 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x04 0xFC 0xE1 0x39 
<can_write_data> id=19 opcode=0x08 : 
0x08 0x54 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x57 0x00 0x02 0x58 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x05 0xFC 0xE1 0x39 
<can_write_data> id=20 opcode=0x08 : 
0x08 0x58 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x5B 0x00 0x02 0x5C 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x06 0xFC 0xE1 0x39 
<can_write_data> id=21 opcode=0x08 : 
0x08 0x5C 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x60 0x00 0x10 0x61 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x01 0xFB 0xE1 0x39 
<can_write_data> id=22 opcode=0x08 : 
0x08 0x61 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x64 0x00 0x12 0x65 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x02 0xFB 0xE1 0x39 
<can_write_data> id=23 opcode=0x08 : 
0x08 0x65 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x68 0x00 0x0A 0x69 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x03 0xFB 0xE1 0x39 
<can_write_data> id=24 opcode=0x08 : 
0x08 0x69 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x6B 0x00 0x0A 0x6C 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x04 0xFB 0xE1 0x39 
<can_write_data> id=25 opcode=0x08 : 
0x08 0x6C 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x6F 0x00 0x02 0x70 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x01 0xFD 0xE1 0x39 
<can_write_data> id=26 opcode=0x08 : 
0x08 0x70 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x73 0x00 0x02 0x74 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x01 0xFE 0xE1 0x39 
<can_write_data> id=27 opcode=0x08 : 
0x08 0x74 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x76 0x00 0x02 0x77 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x02 0xFE 0xE1 0x39 
<can_write_data> id=28 opcode=0x08 : 
0x08 0x77 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x79 0x00 0x0A 0x7A 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x03 0xFE 0xE1 0x39 
<can_write_data> id=29 opcode=0x08 : 
0x08 0x7A 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x7C 0x00 0x02 0x7D 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x04 0xFE 0xE1 0x39 
<can_write_data> id=30 opcode=0x08 : 
0x08 0x7D 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x80 0x00 0x0E 0x81 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xB0 0x00 0x40 0x51 0x04 0xC1 0xFF 0x00 0xF0 
<can_write_data> id=31 opcode=0x08 : 
0x08 0x81 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 23 octets : 
0x09 0x15 0x83 0x00 0x0E 0x84 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xB0 0x00 0x40 0x51 0x04 0xC2 0xFF 0x00 0xF0 
<can_write_data> id=32 opcode=0x08 : 
0x08 0x84 0x00 0xFF 0xFF 0x03 0x28 
<received_data> 5 octets : 
0x01 0x08 0x84 0x00 0x0A 
handle = 0x0002, char properties = 0x0e, char value handle = 0x0003, uuid = 00002a00-0000-1000-8000-00805f9b34fb
handle = 0x0004, char properties = 0x02, char value handle = 0x0005, uuid = 00002a01-0000-1000-8000-00805f9b34fb
handle = 0x0006, char properties = 0x0a, char value handle = 0x0007, uuid = 00002a02-0000-1000-8000-00805f9b34fb
handle = 0x0008, char properties = 0x0a, char value handle = 0x0009, uuid = 00002a03-0000-1000-8000-00805f9b34fb
handle = 0x000a, char properties = 0x02, char value handle = 0x000b, uuid = 00002a04-0000-1000-8000-00805f9b34fb
handle = 0x000d, char properties = 0x20, char value handle = 0x000e, uuid = 00002a05-0000-1000-8000-00805f9b34fb
handle = 0x0011, char properties = 0x02, char value handle = 0x0012, uuid = 00002a23-0000-1000-8000-00805f9b34fb
handle = 0x0013, char properties = 0x02, char value handle = 0x0014, uuid = 00002a24-0000-1000-8000-00805f9b34fb
handle = 0x0015, char properties = 0x02, char value handle = 0x0016, uuid = 00002a25-0000-1000-8000-00805f9b34fb
handle = 0x0017, char properties = 0x02, char value handle = 0x0018, uuid = 00002a26-0000-1000-8000-00805f9b34fb
handle = 0x0019, char properties = 0x02, char value handle = 0x001a, uuid = 00002a27-0000-1000-8000-00805f9b34fb
handle = 0x001b, char properties = 0x02, char value handle = 0x001c, uuid = 00002a28-0000-1000-8000-00805f9b34fb
handle = 0x001d, char properties = 0x02, char value handle = 0x001e, uuid = 00002a29-0000-1000-8000-00805f9b34fb
handle = 0x001f, char properties = 0x02, char value handle = 0x0020, uuid = 00002a2a-0000-1000-8000-00805f9b34fb
handle = 0x0021, char properties = 0x02, char value handle = 0x0022, uuid = 00002a50-0000-1000-8000-00805f9b34fb
handle = 0x0024, char properties = 0x12, char value handle = 0x0025, uuid = 39e1fa01-84a8-11e2-afba-0002a5d5c51b
handle = 0x0028, char properties = 0x12, char value handle = 0x0029, uuid = 39e1fa02-84a8-11e2-afba-0002a5d5c51b
handle = 0x002c, char properties = 0x12, char value handle = 0x002d, uuid = 39e1fa03-84a8-11e2-afba-0002a5d5c51b
handle = 0x0030, char properties = 0x12, char value handle = 0x0031, uuid = 39e1fa04-84a8-11e2-afba-0002a5d5c51b
handle = 0x0034, char properties = 0x12, char value handle = 0x0035, uuid = 39e1fa05-84a8-11e2-afba-0002a5d5c51b
handle = 0x0038, char properties = 0x0a, char value handle = 0x0039, uuid = 39e1fa06-84a8-11e2-afba-0002a5d5c51b
handle = 0x003b, char properties = 0x0a, char value handle = 0x003c, uuid = 39e1fa07-84a8-11e2-afba-0002a5d5c51b
handle = 0x003e, char properties = 0x12, char value handle = 0x003f, uuid = 39e1fa08-84a8-11e2-afba-0002a5d5c51b
handle = 0x0043, char properties = 0x12, char value handle = 0x0044, uuid = 00002a19-0000-1000-8000-00805f9b34fb
handle = 0x0047, char properties = 0x02, char value handle = 0x0048, uuid = 39e1fc01-84a8-11e2-afba-0002a5d5c51b
handle = 0x004b, char properties = 0x02, char value handle = 0x004c, uuid = 39e1fc02-84a8-11e2-afba-0002a5d5c51b
handle = 0x004f, char properties = 0x0a, char value handle = 0x0050, uuid = 39e1fc03-84a8-11e2-afba-0002a5d5c51b
handle = 0x0053, char properties = 0x02, char value handle = 0x0054, uuid = 39e1fc04-84a8-11e2-afba-0002a5d5c51b
handle = 0x0057, char properties = 0x02, char value handle = 0x0058, uuid = 39e1fc05-84a8-11e2-afba-0002a5d5c51b
handle = 0x005b, char properties = 0x02, char value handle = 0x005c, uuid = 39e1fc06-84a8-11e2-afba-0002a5d5c51b
handle = 0x0060, char properties = 0x10, char value handle = 0x0061, uuid = 39e1fb01-84a8-11e2-afba-0002a5d5c51b
handle = 0x0064, char properties = 0x12, char value handle = 0x0065, uuid = 39e1fb02-84a8-11e2-afba-0002a5d5c51b
handle = 0x0068, char properties = 0x0a, char value handle = 0x0069, uuid = 39e1fb03-84a8-11e2-afba-0002a5d5c51b
handle = 0x006b, char properties = 0x0a, char value handle = 0x006c, uuid = 39e1fb04-84a8-11e2-afba-0002a5d5c51b
handle = 0x006f, char properties = 0x02, char value handle = 0x0070, uuid = 39e1fd01-84a8-11e2-afba-0002a5d5c51b
handle = 0x0073, char properties = 0x02, char value handle = 0x0074, uuid = 39e1fe01-84a8-11e2-afba-0002a5d5c51b
handle = 0x0076, char properties = 0x02, char value handle = 0x0077, uuid = 39e1fe02-84a8-11e2-afba-0002a5d5c51b
handle = 0x0079, char properties = 0x0a, char value handle = 0x007a, uuid = 39e1fe03-84a8-11e2-afba-0002a5d5c51b
handle = 0x007c, char properties = 0x02, char value handle = 0x007d, uuid = 39e1fe04-84a8-11e2-afba-0002a5d5c51b
handle = 0x0080, char properties = 0x0e, char value handle = 0x0081, uuid = f000ffc1-0451-4000-b000-000000000000
handle = 0x0083, char properties = 0x0e, char value handle = 0x0084, uuid = f000ffc2-0451-4000-b000-000000000000

# ./attrib/gatttool -i hci0 -b A0:14:3D:0C:8E:91 --char-desc
<can_write_data> id=1 opcode=0x04 : 
0x04 0x01 0x00 0xFF 0xFF 
<received_data> 22 octets : 
0x05 0x01 0x01 0x00 0x00 0x28 0x02 0x00 0x03 0x28 0x03 0x00 0x00 0x2A 0x04 0x00 0x03 0x28 0x05 0x00 0x01 0x2A 
handle = 0x0001, uuid = 2800
handle = 0x0002, uuid = 2803
handle = 0x0003, uuid = 2a00
handle = 0x0004, uuid = 2803
handle = 0x0005, uuid = 2a01

# ./attrib/gatttool -i hci0 -b A0:14:3D:0C:8E:91 --char-read --handle=0x0024
<can_write_data> id=1 opcode=0x0A : 
0x0A 0x24 0x00 
<received_data> 20 octets : 
0x0B 0x12 0x25 0x00 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x01 0xFA 0xE1 0x39 
Characteristic value/descriptor: 12 25 00 1b c5 d5 a5 02 00 ba af e2 11 a8 84 01 fa e1 39 

# ./attrib/gatttool -i hci0 -b A0:14:3D:0C:8E:91 --char-read --handle=0x0025
<can_write_data> id=1 opcode=0x0A : 
0x0A 0x25 0x00 
<received_data> 3 octets : 
0x0B 0xFF 0xFF 
Characteristic value/descriptor: ff ff

$ sudo hcidump -X
[sudo] password for tv: 
HCI sniffer - Bluetooth packet analyzer ver 2.2
device: hci0 snap_len: 1028 filter: 0xffffffffffffffff
< HCI Command: LE Create Connection (0x08|0x000d) plen 25
    bdaddr A0:14:3D:0C:8E:91 type 0
> HCI Event: Command Status (0x0f) plen 4
    LE Create Connection (0x08|0x000d) status 0x00 ncmd 1
> HCI Event: LE Meta Event (0x3e) plen 19
    LE Connection Complete
      status 0x00 handle 70, role master
      bdaddr A0:14:3D:0C:8E:91 (Public)
< ACL data: handle 70 flags 0x00 dlen 7
    ATT: Read req (0x0a)
      handle 0x0025
> HCI Event: Number of Completed Packets (0x13) plen 5
    handle 70 packets 1
> ACL data: handle 70 flags 0x02 dlen 7
    ATT: Read resp (0x0b)
      0000: ff ff                                             ..
< HCI Command: Disconnect (0x01|0x0006) plen 3
    handle 70 reason 0x13
    Reason: Remote User Terminated Connection
> HCI Event: Command Status (0x0f) plen 4
    Disconnect (0x01|0x0006) status 0x00 ncmd 1
> HCI Event: Disconn Complete (0x05) plen 4
    status 0x00 handle 70 reason 0x16
    Reason: Connection Terminated by Local Host

# ./attrib/gatttool -i hci0 -b A0:14:3D:0C:8E:91 --char-read --uuid=0x2A19
<can_write_data> id=1 opcode=0x08 : 
0x08 0x01 0x00 0xFF 0xFF 0x19 0x2A 
<received_data> 5 octets : 
0x09 0x03 0x44 0x00 0x64 
handle: 0x0044 	 value: 64

# ./attrib/gatttool -i hci0 -b A0:14:3D:0C:8E:91 --char-read --uuid=39e1fa01-84a8-11e2-afba-0002a5d5c51b
<can_write_data> id=1 opcode=0x08 : 
0x08 0x01 0x00 0xFF 0xFF 0x1B 0xC5 0xD5 0xA5 0x02 0x00 0xBA 0xAF 0xE2 0x11 0xA8 0x84 0x01 0xFA 0xE1 0x39 
<received_data> 6 octets : 
0x09 0x04 0x25 0x00 0xA6 0x14 
handle: 0x0025 	 value: a6 14

# ./attrib/gatttool -i hci0 -b A0:14:3D:0C:8E:91 --char-write --handle=0x003C --value=0x01
<can_write_data> id=1 opcode=0x52 : 
0x52 0x3C 0x00 0x00 0x01

# ./attrib/gatttool -i hci0 -b A0:14:3D:0C:8E:91 --char-read --handle=0x003C
<can_write_data> id=1 opcode=0x0A : 
0x0A 0x3C 0x00 
<received_data> 2 octets : 
0x0B 0x00 
Characteristic value/descriptor: 00