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1 /******************************************************************************
2  *
3  *  Copyright (C) 1999-2012 Broadcom Corporation
4  *
5  *  Licensed under the Apache License, Version 2.0 (the "License");
6  *  you may not use this file except in compliance with the License.
7  *  You may obtain a copy of the License at:
8  *
9  *  http://www.apache.org/licenses/LICENSE-2.0
10  *
11  *  Unless required by applicable law or agreed to in writing, software
12  *  distributed under the License is distributed on an "AS IS" BASIS,
13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  *  See the License for the specific language governing permissions and
15  *  limitations under the License.
16  *
17  ******************************************************************************/
18 #ifndef GATT_API_H
19 #define GATT_API_H
20 
21 #include "bt_target.h"
22 #include "gattdefs.h"
23 #include "btm_ble_api.h"
24 
25 /*****************************************************************************
26 **  Constants
27 *****************************************************************************/
28 /* Success code and error codes */
29 #define  GATT_SUCCESS                        0x00
30 #define  GATT_INVALID_HANDLE                 0x01
31 #define  GATT_READ_NOT_PERMIT                0x02
32 #define  GATT_WRITE_NOT_PERMIT               0x03
33 #define  GATT_INVALID_PDU                    0x04
34 #define  GATT_INSUF_AUTHENTICATION           0x05
35 #define  GATT_REQ_NOT_SUPPORTED              0x06
36 #define  GATT_INVALID_OFFSET                 0x07
37 #define  GATT_INSUF_AUTHORIZATION            0x08
38 #define  GATT_PREPARE_Q_FULL                 0x09
39 #define  GATT_NOT_FOUND                      0x0a
40 #define  GATT_NOT_LONG                       0x0b
41 #define  GATT_INSUF_KEY_SIZE                 0x0c
42 #define  GATT_INVALID_ATTR_LEN               0x0d
43 #define  GATT_ERR_UNLIKELY                   0x0e
44 #define  GATT_INSUF_ENCRYPTION               0x0f
45 #define  GATT_UNSUPPORT_GRP_TYPE             0x10
46 #define  GATT_INSUF_RESOURCE                 0x11
47 
48 
49 #define  GATT_ILLEGAL_PARAMETER              0x87
50 #define  GATT_NO_RESOURCES                   0x80
51 #define  GATT_INTERNAL_ERROR                 0x81
52 #define  GATT_WRONG_STATE                    0x82
53 #define  GATT_DB_FULL                        0x83
54 #define  GATT_BUSY                           0x84
55 #define  GATT_ERROR                          0x85
56 #define  GATT_CMD_STARTED                    0x86
57 #define  GATT_PENDING                        0x88
58 #define  GATT_AUTH_FAIL                      0x89
59 #define  GATT_MORE                           0x8a
60 #define  GATT_INVALID_CFG                    0x8b
61 #define  GATT_SERVICE_STARTED                0x8c
62 #define  GATT_ENCRYPED_MITM                  GATT_SUCCESS
63 #define  GATT_ENCRYPED_NO_MITM               0x8d
64 #define  GATT_NOT_ENCRYPTED                  0x8e
65 #define  GATT_CONGESTED                      0x8f
66 
67                                              /* 0xE0 ~ 0xFC reserved for future use */
68 #define  GATT_CCC_CFG_ERR                    0xFD /* Client Characteristic Configuration Descriptor Improperly Configured */
69 #define  GATT_PRC_IN_PROGRESS                0xFE /* Procedure Already in progress */
70 #define  GATT_OUT_OF_RANGE                   0xFF /* Attribute value out of range */
71 typedef UINT8 tGATT_STATUS;
72 
73 
74 #define  GATT_RSP_ERROR                      0x01
75 #define  GATT_REQ_MTU                        0x02
76 #define  GATT_RSP_MTU                        0x03
77 #define  GATT_REQ_FIND_INFO                  0x04
78 #define  GATT_RSP_FIND_INFO                  0x05
79 #define  GATT_REQ_FIND_TYPE_VALUE            0x06
80 #define  GATT_RSP_FIND_TYPE_VALUE            0x07
81 #define  GATT_REQ_READ_BY_TYPE               0x08
82 #define  GATT_RSP_READ_BY_TYPE               0x09
83 #define  GATT_REQ_READ                       0x0A
84 #define  GATT_RSP_READ                       0x0B
85 #define  GATT_REQ_READ_BLOB                  0x0C
86 #define  GATT_RSP_READ_BLOB                  0x0D
87 #define  GATT_REQ_READ_MULTI                 0x0E
88 #define  GATT_RSP_READ_MULTI                 0x0F
89 #define  GATT_REQ_READ_BY_GRP_TYPE           0x10
90 #define  GATT_RSP_READ_BY_GRP_TYPE           0x11
91 #define  GATT_REQ_WRITE                      0x12 /*                 0001-0010 (write)*/
92 #define  GATT_RSP_WRITE                      0x13
93 #define  GATT_CMD_WRITE                      0x52 /* changed in V4.0 01001-0010(write cmd)*/
94 #define  GATT_REQ_PREPARE_WRITE              0x16
95 #define  GATT_RSP_PREPARE_WRITE              0x17
96 #define  GATT_REQ_EXEC_WRITE                 0x18
97 #define  GATT_RSP_EXEC_WRITE                 0x19
98 #define  GATT_HANDLE_VALUE_NOTIF             0x1B
99 #define  GATT_HANDLE_VALUE_IND               0x1D
100 #define  GATT_HANDLE_VALUE_CONF              0x1E
101 #define  GATT_SIGN_CMD_WRITE                 0xD2 /* changed in V4.0 1101-0010 (signed write)  see write cmd above*/
102 #define  GATT_OP_CODE_MAX                    GATT_HANDLE_VALUE_CONF + 1 /* 0x1E = 30 + 1 = 31*/
103 
104 
105 #define  GATT_HANDLE_IS_VALID(x) ((x) != 0)
106 
107 #define GATT_CONN_UNKNOWN                   0
108 #define GATT_CONN_L2C_FAILURE               1                               /* general L2cap failure  */
109 #define GATT_CONN_TIMEOUT                   HCI_ERR_CONNECTION_TOUT         /* 0x08 connection timeout  */
110 #define GATT_CONN_TERMINATE_PEER_USER       HCI_ERR_PEER_USER               /* 0x13 connection terminate by peer user  */
111 #define GATT_CONN_TERMINATE_LOCAL_HOST      HCI_ERR_CONN_CAUSE_LOCAL_HOST   /* 0x16 connectionterminated by local host  */
112 #define GATT_CONN_FAIL_ESTABLISH            HCI_ERR_CONN_FAILED_ESTABLISHMENT/* 0x03E connection fail to establish  */
113 #define GATT_CONN_LMP_TIMEOUT               HCI_ERR_LMP_RESPONSE_TIMEOUT     /* 0x22 connection fail for LMP response tout */
114 #define GATT_CONN_CANCEL                    L2CAP_CONN_CANCEL                /* 0x0100 L2CAP connection cancelled  */
115 typedef UINT16 tGATT_DISCONN_REASON;
116 
117 /* MAX GATT MTU size
118 */
119 #ifndef GATT_MAX_MTU_SIZE
120     #define GATT_MAX_MTU_SIZE     517
121 #endif
122 
123 /* max legth of an attribute value
124 */
125 #ifndef GATT_MAX_ATTR_LEN
126     #define GATT_MAX_ATTR_LEN     600
127 #endif
128 
129 /* default GATT MTU size over LE link
130 */
131 #define GATT_DEF_BLE_MTU_SIZE       23
132 
133 /* invalid connection ID
134 */
135 #define GATT_INVALID_CONN_ID        0xFFFF
136 
137 #ifndef GATT_CL_MAX_LCB
138     #define GATT_CL_MAX_LCB     22
139 #endif
140 
141 #ifndef GATT_MAX_SCCB
142     #define GATT_MAX_SCCB       10
143 #endif
144 
145 
146 /* GATT notification caching timer, default to be three seconds
147 */
148 #ifndef GATTC_NOTIF_TIMEOUT
149     #define GATTC_NOTIF_TIMEOUT   3
150 #endif
151 
152 /*****************************************************************************
153 ** GATT Structure Definition
154 *****************************************************************************/
155 
156 /* Attribute permissions
157 */
158 #define GATT_PERM_READ              (1 << 0) /* bit 0 */
159 #define GATT_PERM_READ_ENCRYPTED    (1 << 1) /* bit 1 */
160 #define GATT_PERM_READ_ENC_MITM     (1 << 2) /* bit 2 */
161 #define GATT_PERM_WRITE             (1 << 4) /* bit 4 */
162 #define GATT_PERM_WRITE_ENCRYPTED   (1 << 5) /* bit 5 */
163 #define GATT_PERM_WRITE_ENC_MITM    (1 << 6) /* bit 6 */
164 #define GATT_PERM_WRITE_SIGNED      (1 << 7) /* bit 7 */
165 #define GATT_PERM_WRITE_SIGNED_MITM (1 << 8) /* bit 8 */
166 typedef UINT16 tGATT_PERM;
167 
168 #define GATT_ENCRYPT_KEY_SIZE_MASK  (0xF000) /* the MS nibble of tGATT_PERM; key size 7=0; size 16=9 */
169 
170 #define GATT_READ_ALLOWED           (GATT_PERM_READ | GATT_PERM_READ_ENCRYPTED | GATT_PERM_READ_ENC_MITM)
171 #define GATT_READ_AUTH_REQUIRED     (GATT_PERM_READ_ENCRYPTED)
172 #define GATT_READ_MITM_REQUIRED     (GATT_PERM_READ_ENC_MITM)
173 #define GATT_READ_ENCRYPTED_REQUIRED   (GATT_PERM_READ_ENCRYPTED | GATT_PERM_READ_ENC_MITM)
174 
175 
176 #define GATT_WRITE_ALLOWED          (GATT_PERM_WRITE | GATT_PERM_WRITE_ENCRYPTED | GATT_PERM_WRITE_ENC_MITM | \
177                                      GATT_PERM_WRITE_SIGNED | GATT_PERM_WRITE_SIGNED_MITM)
178 
179 #define GATT_WRITE_AUTH_REQUIRED    (GATT_PERM_WRITE_ENCRYPTED | GATT_PERM_WRITE_SIGNED)
180 
181 #define GATT_WRITE_MITM_REQUIRED    (GATT_PERM_WRITE_ENC_MITM | GATT_PERM_WRITE_SIGNED_MITM)
182 
183 #define GATT_WRITE_ENCRYPTED_PERM   (GATT_PERM_WRITE_ENCRYPTED | GATT_PERM_WRITE_ENC_MITM)
184 
185 #define GATT_WRITE_SIGNED_PERM      (GATT_PERM_WRITE_SIGNED | GATT_PERM_WRITE_SIGNED_MITM)
186 
187 
188 /* Characteristic properties
189 */
190 #define GATT_CHAR_PROP_BIT_BROADCAST    (1 << 0)
191 #define GATT_CHAR_PROP_BIT_READ         (1 << 1)
192 #define GATT_CHAR_PROP_BIT_WRITE_NR     (1 << 2)
193 #define GATT_CHAR_PROP_BIT_WRITE        (1 << 3)
194 #define GATT_CHAR_PROP_BIT_NOTIFY       (1 << 4)
195 #define GATT_CHAR_PROP_BIT_INDICATE     (1 << 5)
196 #define GATT_CHAR_PROP_BIT_AUTH         (1 << 6)
197 #define GATT_CHAR_PROP_BIT_EXT_PROP     (1 << 7)
198 typedef UINT8 tGATT_CHAR_PROP;
199 
200 
201 /* Format of the value of a characteristic. enumeration type
202 */
203 enum
204 {
205     GATT_FORMAT_RES,            /* rfu */
206     GATT_FORMAT_BOOL,           /* 0x01 boolean */
207     GATT_FORMAT_2BITS,           /* 0x02 2 bit */
208     GATT_FORMAT_NIBBLE,         /* 0x03 nibble */
209     GATT_FORMAT_UINT8,          /* 0x04 uint8 */
210     GATT_FORMAT_UINT12,         /* 0x05 uint12 */
211     GATT_FORMAT_UINT16,         /* 0x06 uint16 */
212     GATT_FORMAT_UINT24,         /* 0x07 uint24 */
213     GATT_FORMAT_UINT32,         /* 0x08 uint32 */
214     GATT_FORMAT_UINT48,         /* 0x09 uint48 */
215     GATT_FORMAT_UINT64,         /* 0x0a uint64 */
216     GATT_FORMAT_UINT128,        /* 0x0B uint128 */
217     GATT_FORMAT_SINT8,          /* 0x0C signed 8 bit integer */
218     GATT_FORMAT_SINT12,         /* 0x0D signed 12 bit integer */
219     GATT_FORMAT_SINT16,         /* 0x0E signed 16 bit integer */
220     GATT_FORMAT_SINT24,         /* 0x0F signed 24 bit integer */
221     GATT_FORMAT_SINT32,         /* 0x10 signed 32 bit integer */
222     GATT_FORMAT_SINT48,         /* 0x11 signed 48 bit integer */
223     GATT_FORMAT_SINT64,         /* 0x12 signed 64 bit integer */
224     GATT_FORMAT_SINT128,        /* 0x13 signed 128 bit integer */
225     GATT_FORMAT_FLOAT32,        /* 0x14 float 32 */
226     GATT_FORMAT_FLOAT64,        /* 0x15 float 64*/
227     GATT_FORMAT_SFLOAT,         /* 0x16 IEEE-11073 16 bit SFLOAT */
228     GATT_FORMAT_FLOAT,          /* 0x17 IEEE-11073 32 bit SFLOAT */
229     GATT_FORMAT_DUINT16,        /* 0x18 IEEE-20601 format */
230     GATT_FORMAT_UTF8S,          /* 0x19 UTF-8 string */
231     GATT_FORMAT_UTF16S,         /* 0x1a UTF-16 string */
232     GATT_FORMAT_STRUCT,         /* 0x1b Opaque structure*/
233     GATT_FORMAT_MAX             /* 0x1c or above reserved */
234 };
235 typedef UINT8 tGATT_FORMAT;
236 
237 /* Characteristic Presentation Format Descriptor value
238 */
239 typedef struct
240 {
241     UINT16              unit;       /* as UUIUD defined by SIG */
242     UINT16              descr;       /* as UUID as defined by SIG */
243     tGATT_FORMAT        format;
244     INT8                exp;
245     UINT8               name_spc;   /* The name space of the description */
246 } tGATT_CHAR_PRES;
247 
248 /* Characteristic Report reference Descriptor format
249 */
250 typedef struct
251 {
252     UINT8              rpt_id;       /* report ID */
253     UINT8              rpt_type;       /* report type */
254 } tGATT_CHAR_RPT_REF;
255 
256 
257 #define GATT_VALID_RANGE_MAX_SIZE       16
258 typedef struct
259 {
260     UINT8                   format;
261     UINT16                  len;
262     UINT8                   lower_range[GATT_VALID_RANGE_MAX_SIZE]; /* in little endian format */
263     UINT8                   upper_range[GATT_VALID_RANGE_MAX_SIZE];
264 } tGATT_VALID_RANGE;
265 
266 /* Characteristic Aggregate Format attribute value
267 */
268 #define GATT_AGGR_HANDLE_NUM_MAX        10
269 typedef struct
270 {
271     UINT8                   num_handle;
272     UINT16                  handle_list[GATT_AGGR_HANDLE_NUM_MAX];
273 } tGATT_CHAR_AGGRE;
274 
275 /* Characteristic descriptor: Extended Properties value
276 */
277 #define GATT_CHAR_BIT_REL_WRITE    0x0001       /* permits reliable writes of the Characteristic Value */
278 #define GATT_CHAR_BIT_WRITE_AUX    0x0002       /* permits writes to the characteristic descriptor */
279 
280 
281 /* characteristic descriptor: client configuration value
282 */
283 #define GATT_CLT_CONFIG_NONE               0x0000
284 #define GATT_CLT_CONFIG_NOTIFICATION       0x0001
285 #define GATT_CLT_CONFIG_INDICATION         0x0002
286 typedef UINT16 tGATT_CLT_CHAR_CONFIG;
287 
288 
289 /* characteristic descriptor: server configuration value
290 */
291 #define GATT_SVR_CONFIG_NONE                     0x0000
292 #define GATT_SVR_CONFIG_BROADCAST                0x0001
293 typedef UINT16 tGATT_SVR_CHAR_CONFIG;
294 
295 /* Characteristic descriptor: Extended Properties value
296 */
297 #define GATT_CHAR_BIT_REL_WRITE    0x0001       /* permits reliable writes of the Characteristic Value */
298 #define GATT_CHAR_BIT_WRITE_AUX    0x0002       /* permits writes to the characteristic descriptor */
299 
300 /* authentication requirement
301 */
302 #define GATT_AUTH_REQ_NONE              0
303 #define GATT_AUTH_REQ_NO_MITM           1   /* unauthenticated encryption */
304 #define GATT_AUTH_REQ_MITM              2   /* authenticated encryption */
305 #define GATT_AUTH_REQ_SIGNED_NO_MITM    3
306 #define GATT_AUTH_REQ_SIGNED_MITM       4
307 typedef UINT8 tGATT_AUTH_REQ;
308 
309 /* Attribute Value structure
310 */
311 typedef struct
312 {
313     UINT16          conn_id;
314     UINT16          handle;     /* attribute handle */
315     UINT16          offset;     /* attribute value offset, if no offfset is needed for the command, ignore it */
316     UINT16          len;        /* length of attribute value */
317     tGATT_AUTH_REQ  auth_req;   /*  authentication request */
318     UINT8           value[GATT_MAX_ATTR_LEN];  /* the actual attribute value */
319 } tGATT_VALUE;
320 
321 /* Union of the event data which is used in the server respond API to carry the server response information
322 */
323 typedef union
324 {
325     /* data type            member          event   */
326     tGATT_VALUE             attr_value;     /* READ, HANDLE_VALUE_IND, PREPARE_WRITE */
327                                             /* READ_BLOB, READ_BY_TYPE */
328     UINT16                  handle;         /* WRITE, WRITE_BLOB */
329 
330 } tGATTS_RSP;
331 
332 /* Transports for the primary service  */
333 #define GATT_TRANSPORT_LE           BT_TRANSPORT_LE
334 #define GATT_TRANSPORT_BR_EDR       BT_TRANSPORT_BR_EDR
335 #define GATT_TRANSPORT_LE_BR_EDR    (BT_TRANSPORT_LE|BT_TRANSPORT_BR_EDR)
336 typedef UINT8 tGATT_TRANSPORT;
337 
338 #define GATT_PREP_WRITE_CANCEL   0x00
339 #define GATT_PREP_WRITE_EXEC     0x01
340 typedef UINT8   tGATT_EXEC_FLAG;
341 
342 /* read request always based on UUID */
343 typedef struct
344 {
345     UINT16        handle;
346     UINT16        offset;
347     BOOLEAN       is_long;
348 } tGATT_READ_REQ;
349 
350 /* write request data */
351 typedef struct
352 {
353     UINT16          handle;     /* attribute handle */
354     UINT16          offset;     /* attribute value offset, if no offfset is needed for the command, ignore it */
355     UINT16          len;        /* length of attribute value */
356     UINT8           value[GATT_MAX_ATTR_LEN];  /* the actual attribute value */
357     BOOLEAN         need_rsp;   /* need write response */
358     BOOLEAN         is_prep;    /* is prepare write */
359 } tGATT_WRITE_REQ;
360 
361 /* callback data for server access request from client */
362 typedef union
363 {
364     tGATT_READ_REQ         read_req;       /* read request, read by Type, read blob */
365 
366     tGATT_WRITE_REQ        write_req;    /* write */
367                                          /* prepare write */
368                                          /* write blob */
369     UINT16                 handle;       /* handle value confirmation */
370     UINT16                 mtu;          /* MTU exchange request */
371     tGATT_EXEC_FLAG        exec_write;    /* execute write */
372 } tGATTS_DATA;
373 
374 typedef UINT8 tGATT_SERV_IF;               /* GATT Service Interface */
375 
376 enum
377 {
378     GATTS_REQ_TYPE_READ = 1,        /* Attribute read request */
379     GATTS_REQ_TYPE_WRITE,           /* Attribute write request */
380     GATTS_REQ_TYPE_WRITE_EXEC,      /* Execute write */
381     GATTS_REQ_TYPE_MTU,             /* MTU exchange information */
382     GATTS_REQ_TYPE_CONF             /* handle value confirmation */
383 };
384 typedef UINT8   tGATTS_REQ_TYPE;
385 
386 
387 
388 /* Client Used Data Structure
389 */
390 /* definition of different discovery types */
391 enum
392 {
393     GATT_DISC_SRVC_ALL = 1,     /* discover all services */
394     GATT_DISC_SRVC_BY_UUID,     /* discover service of a special type */
395     GATT_DISC_INC_SRVC,         /* discover the included service within a service */
396     GATT_DISC_CHAR,             /* discover characteristics of a service with/without type requirement */
397     GATT_DISC_CHAR_DSCPT,       /* discover characteristic descriptors of a character */
398     GATT_DISC_MAX               /* maximnun discover type */
399 };
400 typedef UINT8   tGATT_DISC_TYPE;
401 
402 /* Discover parameters of different discovery types
403 */
404 typedef struct
405 {
406     tBT_UUID    service;
407     UINT16      s_handle;
408     UINT16      e_handle;
409 }tGATT_DISC_PARAM;
410 
411 /* GATT read type enumeration
412 */
413 enum
414 {
415     GATT_READ_BY_TYPE =        1,
416     GATT_READ_BY_HANDLE,
417     GATT_READ_MULTIPLE,
418     GATT_READ_CHAR_VALUE,
419     GATT_READ_PARTIAL,
420     GATT_READ_MAX
421 };
422 typedef UINT8 tGATT_READ_TYPE;
423 
424 /* Read By Type Request (GATT_READ_BY_TYPE) Data
425 */
426 typedef struct
427 {
428     tGATT_AUTH_REQ      auth_req;
429     UINT16              s_handle;
430     UINT16              e_handle;
431     tBT_UUID            uuid;
432 } tGATT_READ_BY_TYPE;
433 
434 /*   GATT_READ_MULTIPLE request data
435 */
436 #define GATT_MAX_READ_MULTI_HANDLES      10           /* Max attributes to read in one request */
437 typedef struct
438 {
439     tGATT_AUTH_REQ          auth_req;
440     UINT16                  num_handles;                            /* number of handles to read */
441     UINT16                  handles[GATT_MAX_READ_MULTI_HANDLES];   /* handles list to be read */
442 } tGATT_READ_MULTI;
443 
444 /*   Read By Handle Request (GATT_READ_BY_HANDLE) data */
445 typedef struct
446 {
447     tGATT_AUTH_REQ         auth_req;
448     UINT16                 handle;
449 } tGATT_READ_BY_HANDLE;
450 
451 /*   READ_BT_HANDLE_Request data */
452 typedef struct
453 {
454     tGATT_AUTH_REQ         auth_req;
455     UINT16                 handle;
456     UINT16                 offset;
457 } tGATT_READ_PARTIAL;
458 
459 /* Read Request Data
460 */
461 typedef union
462 {
463     tGATT_READ_BY_TYPE   service;
464     tGATT_READ_BY_TYPE   char_type;        /* characterisitc type */
465     tGATT_READ_MULTI     read_multiple;
466     tGATT_READ_BY_HANDLE by_handle;
467     tGATT_READ_PARTIAL   partial;
468 } tGATT_READ_PARAM;
469 
470 /* GATT write type enumeration */
471 enum
472 {
473     GATT_WRITE_NO_RSP = 1,
474     GATT_WRITE ,
475     GATT_WRITE_PREPARE
476 };
477 typedef UINT8 tGATT_WRITE_TYPE;
478 
479 /* Client Operation Complete Callback Data
480 */
481 typedef union
482 {
483     tGATT_VALUE          att_value;
484     UINT16               mtu;
485     UINT16               handle;
486 } tGATT_CL_COMPLETE;
487 
488 /* GATT client operation type, used in client callback function
489 */
490 #define GATTC_OPTYPE_NONE                 0
491 #define GATTC_OPTYPE_DISCOVERY            1
492 #define GATTC_OPTYPE_READ                 2
493 #define GATTC_OPTYPE_WRITE                3
494 #define GATTC_OPTYPE_EXE_WRITE            4
495 #define GATTC_OPTYPE_CONFIG               5
496 #define GATTC_OPTYPE_NOTIFICATION         6
497 #define GATTC_OPTYPE_INDICATION           7
498 typedef UINT8 tGATTC_OPTYPE;
499 
500 /* characteristic declaration
501 */
502 typedef struct
503 {
504     tGATT_CHAR_PROP       char_prop;   /* characterisitc properties */
505     UINT16                val_handle;  /* characteristic value attribute handle */
506     tBT_UUID              char_uuid;   /* characteristic UUID type */
507 } tGATT_CHAR_DCLR_VAL;
508 
509 /* primary service group data
510 */
511 typedef struct
512 {
513     UINT16          e_handle;       /* ending handle of the group */
514     tBT_UUID        service_type;   /* group type */
515 } tGATT_GROUP_VALUE;
516 
517 
518 /* included service attribute value
519 */
520 typedef struct
521 {
522     tBT_UUID    service_type;       /* included service UUID */
523     UINT16      s_handle;           /* starting handle */
524     UINT16      e_handle;           /* ending handle */
525 } tGATT_INCL_SRVC;
526 
527 typedef union
528 {
529     tGATT_INCL_SRVC     incl_service;  /* include service value */
530     tGATT_GROUP_VALUE   group_value;   /* Service UUID type.
531                                           This field is used with GATT_DISC_SRVC_ALL
532                                           or GATT_DISC_SRVC_BY_UUID
533                                           type of discovery result callback. */
534 
535     UINT16              handle;        /* When used with GATT_DISC_INC_SRVC type discovery result,
536                                           it is the included service starting handle.*/
537 
538     tGATT_CHAR_DCLR_VAL dclr_value;    /* Characteristic declaration value.
539                                           This field is used with GATT_DISC_CHAR type discovery.*/
540 } tGATT_DISC_VALUE;
541 
542 /* discover result record
543 */
544 typedef struct
545 {
546     tBT_UUID            type;
547     UINT16              handle;
548     tGATT_DISC_VALUE    value;
549 } tGATT_DISC_RES;
550 
551 
552 #define GATT_LINK_IDLE_TIMEOUT_WHEN_NO_APP    1 /* start a idle timer for this duration
553                                                  when no application need to use the link */
554 
555 #define GATT_LINK_NO_IDLE_TIMEOUT            0xFFFF
556 
557 #define GATT_INVALID_ACL_HANDLE              0xFFFF
558 /* discover result callback function */
559 typedef void (tGATT_DISC_RES_CB) (UINT16 conn_id, tGATT_DISC_TYPE disc_type,
560                                     tGATT_DISC_RES *p_data);
561 
562 /* discover complete callback function */
563 typedef void (tGATT_DISC_CMPL_CB) (UINT16 conn_id, tGATT_DISC_TYPE disc_type, tGATT_STATUS status);
564 
565 /* Define a callback function for when read/write/disc/config operation is completed. */
566 typedef void (tGATT_CMPL_CBACK) (UINT16 conn_id, tGATTC_OPTYPE op, tGATT_STATUS status,
567                 tGATT_CL_COMPLETE *p_data);
568 
569 /* Define a callback function when an initialized connection is established. */
570 typedef void (tGATT_CONN_CBACK) (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id, BOOLEAN connected,
571                                     tGATT_DISCONN_REASON reason, tBT_TRANSPORT transport);
572 
573 /* attribute request callback for ATT server */
574 typedef void  (tGATT_REQ_CBACK )(UINT16 conn_id, UINT32 trans_id, tGATTS_REQ_TYPE type,
575                                 tGATTS_DATA *p_data);
576 
577 /* channel congestion/uncongestion callback */
578 typedef void (tGATT_CONGESTION_CBACK )(UINT16 conn_id, BOOLEAN congested);
579 
580 /* Define a callback function when encryption is established. */
581 typedef void (tGATT_ENC_CMPL_CB)(tGATT_IF gatt_if, BD_ADDR bda);
582 
583 
584 /* Define the structure that applications use to register with
585 ** GATT. This structure includes callback functions. All functions
586 ** MUST be provided.
587 */
588 typedef struct
589 {
590     tGATT_CONN_CBACK                *p_conn_cb;
591     tGATT_CMPL_CBACK                *p_cmpl_cb;
592     tGATT_DISC_RES_CB               *p_disc_res_cb;
593     tGATT_DISC_CMPL_CB              *p_disc_cmpl_cb;
594     tGATT_REQ_CBACK                 *p_req_cb;
595     tGATT_ENC_CMPL_CB               *p_enc_cmpl_cb;
596     tGATT_CONGESTION_CBACK          *p_congestion_cb;
597 } tGATT_CBACK;
598 
599 /***********************  Start Handle Management Definitions   **********************
600 */
601 
602 
603 typedef struct
604 {
605     tBT_UUID app_uuid128;
606     tBT_UUID svc_uuid;
607     UINT16   svc_inst;
608     UINT16   s_handle;
609     UINT16   e_handle;
610     BOOLEAN  is_primary;      /* primary service or secondary */
611 } tGATTS_HNDL_RANGE;
612 
613 
614 
615 #define GATTS_SRV_CHG_CMD_ADD_CLIENT       1
616 #define GATTS_SRV_CHG_CMD_UPDATE_CLIENT    2
617 #define GATTS_SRV_CHG_CMD_REMOVE_CLIENT    3
618 #define GATTS_SRV_CHG_CMD_READ_NUM_CLENTS  4
619 #define GATTS_SRV_CHG_CMD_READ_CLENT       5
620 typedef UINT8 tGATTS_SRV_CHG_CMD;
621 
622 typedef struct
623 {
624     BD_ADDR         bda;
625     BOOLEAN         srv_changed;
626 } tGATTS_SRV_CHG;
627 
628 
629 typedef union
630 {
631     tGATTS_SRV_CHG  srv_chg;
632     UINT8           client_read_index; /* only used for sequential reading client srv chg info */
633 } tGATTS_SRV_CHG_REQ;
634 
635 typedef union
636 {
637     tGATTS_SRV_CHG srv_chg;
638     UINT8 num_clients;
639 } tGATTS_SRV_CHG_RSP;
640 
641 
642 
643 typedef struct
644 {
645     tGATTS_HNDL_RANGE   *p_new_srv_start;
646 } tGATTS_PENDING_NEW_SRV_START;
647 
648 /* Attibute server handle ranges NV storage callback functions
649 */
650 typedef void  (tGATTS_NV_SAVE_CBACK)(BOOLEAN is_saved, tGATTS_HNDL_RANGE *p_hndl_range);
651 typedef BOOLEAN  (tGATTS_NV_SRV_CHG_CBACK)(tGATTS_SRV_CHG_CMD cmd, tGATTS_SRV_CHG_REQ *p_req,
652                                             tGATTS_SRV_CHG_RSP *p_rsp);
653 
654 typedef struct
655 {
656     tGATTS_NV_SAVE_CBACK       *p_nv_save_callback;
657     tGATTS_NV_SRV_CHG_CBACK    *p_srv_chg_callback;
658 } tGATT_APPL_INFO;
659 
660 /*
661 ***********************  End Handle Management Definitions   **********************/
662 
663 /*****************************************************************************
664 **  External Function Declarations
665 *****************************************************************************/
666 #ifdef __cplusplus
667 extern "C"
668 {
669 #endif
670 
671 /*******************************************************************************
672 **
673 ** Function         GATT_SetTraceLevel
674 **
675 ** Description      This function sets the trace level.  If called with
676 **                  a value of 0xFF, it simply returns the current trace level.
677 **
678 ** Returns          The new or current trace level
679 **
680 *******************************************************************************/
681 extern UINT8 GATT_SetTraceLevel (UINT8 new_level);
682 
683 
684 /*******************************************************************************/
685 /* GATT Profile API Functions */
686 /*******************************************************************************/
687 /* GATT Profile Server Functions */
688 /*******************************************************************************/
689 /*******************************************************************************
690 **
691 ** Function         GATTS_AddHandleRange
692 **
693 ** Description      This function add the allocated handles range for the specifed
694 **                  application UUID, service UUID and service instance
695 **
696 ** Parameter        p_hndl_range:   pointer to allocated handles information
697 **
698 ** Returns          TRUE if handle range is added sucessfully; otherwise FALSE.
699 **
700 *******************************************************************************/
701 
702 extern BOOLEAN GATTS_AddHandleRange(tGATTS_HNDL_RANGE *p_hndl_range);
703 
704 /*******************************************************************************
705 **
706 ** Function         GATTS_NVRegister
707 **
708 ** Description      Application manager calls this function to register for
709 **                  NV save callback function.  There can be one and only one
710 **                  NV save callback function.
711 **
712 ** Parameter        p_cb_info : callback informaiton
713 **
714 ** Returns          TRUE if registered OK, else FALSE
715 **
716 *******************************************************************************/
717 extern BOOLEAN  GATTS_NVRegister (tGATT_APPL_INFO *p_cb_info);
718 
719 
720 /*******************************************************************************
721 **
722 ** Function         GATTS_CreateService
723 **
724 ** Description      This function is called to reserve a block of handles for a service.
725 **
726 **                  *** It should be called only once per service instance  ***
727 **
728 ** Parameter        gatt_if       : application if
729 **                  p_svc_uuid    : service UUID
730 **                  svc_inst      : instance of the service inside the application
731 **                  num_handles   : number of handles needed by the service.
732 **                  is_pri        : is a primary service or not.
733 **
734 ** Returns          service handle if sucessful, otherwise 0.
735 **
736 *******************************************************************************/
737 extern UINT16 GATTS_CreateService (tGATT_IF gatt_if, tBT_UUID *p_svc_uuid,
738                                    UINT16 svc_inst, UINT16 num_handles, BOOLEAN is_pri);
739 
740 
741 /*******************************************************************************
742 **
743 ** Function         GATTS_AddIncludeService
744 **
745 ** Description      This function is called to add an included service.
746 **
747 ** Parameter        service_handle : To which service this included service is added to.
748 **                  include_svc_handle    : included service handle.
749 **
750 ** Returns          included service attribute handle. If 0, add included service
751 **                  fail.
752 **
753 *******************************************************************************/
754 extern UINT16 GATTS_AddIncludeService (UINT16 service_handle,
755                                        UINT16 include_svc_handle);
756 
757 
758 /*******************************************************************************
759 **
760 ** Function         GATTS_AddCharacteristic
761 **
762 ** Description      This function is called to add a characteristic into a service.
763 **                  It will add a characteristic declaration and characteristic
764 **                  value declaration into the service database identified by the
765 **                  service handle.
766 **
767 ** Parameter        service_handle : To which service this included service is added to.
768 **                  char_uuid : Characteristic UUID.
769 **                  perm      : Characteristic value declaration attribute permission.
770 **                  property  : Characteristic Properties
771 **
772 ** Returns          Characteristic value declaration attribute handle. 0 if add
773 **                  characteristic failed.
774 **
775 *******************************************************************************/
776 extern UINT16 GATTS_AddCharacteristic (UINT16 service_handle, tBT_UUID *char_uuid,
777                                        tGATT_PERM perm,tGATT_CHAR_PROP property);
778 
779 /*******************************************************************************
780 **
781 ** Function         GATTS_AddCharDescriptor
782 **
783 ** Description      This function is called to add a characteristic descriptor
784 **                  into a service database. Add descriptor should follow add char
785 **                  to which it belongs, and next add char should be done only
786 **                  after all add descriptors for the previous char.
787 **
788 ** Parameter        service_handle  : To which service this characteristic descriptor
789 **                                    is added to.
790 **                  perm            : Characteristic value declaration attribute
791 **                                    permission.
792 **                  p_descr_uuid    : Characteristic descriptor UUID.
793 **
794 ** Returns         Characteristic descriptor attribute handle. 0 if add
795 **                 characteristic descriptor failed.
796 **
797 *******************************************************************************/
798 extern UINT16 GATTS_AddCharDescriptor (UINT16 service_handle, tGATT_PERM perm,
799                                        tBT_UUID * p_descr_uuid);
800 
801 /*******************************************************************************
802 **
803 ** Function         GATTS_DeleteService
804 **
805 ** Description      This function is called to delete a service.
806 **
807 ** Parameter        gatt_if       : application interface
808 **                  p_svc_uuid    : service UUID
809 **                  svc_inst      : instance of the service inside the application
810 **
811 ** Returns          TRUE if operation succeed, FALSE if handle block was not found.
812 **
813 *******************************************************************************/
814 extern BOOLEAN GATTS_DeleteService (tGATT_IF gatt_if, tBT_UUID *p_svc_uuid,
815                                     UINT16 svc_inst);
816 
817 /*******************************************************************************
818 **
819 ** Function         GATTS_StartService
820 **
821 ** Description      This function is called to start a service with GATT
822 **
823 ** Parameter        gatt_if : service handle.
824 **                  p_cback       : application service callback functions.
825 **                  sup_transport : supported transport(s) for this primary service
826 **
827 ** return           GATT_SUCCESS if sucessfully started; otherwise error code.
828 **
829 *******************************************************************************/
830 extern tGATT_STATUS GATTS_StartService (tGATT_IF gatt_if, UINT16 service_handle,
831                                         tGATT_TRANSPORT sup_transport);
832 
833 
834 /*******************************************************************************
835 **
836 ** Function         GATTS_StopService
837 **
838 ** Description      This function is called to stop a service
839 **
840 ** Parameter         service_handle : this is the start handle of a service
841 **
842 ** Returns          None.
843 **
844 *******************************************************************************/
845 extern void GATTS_StopService (UINT16 service_handle);
846 
847 
848 /*******************************************************************************
849 **
850 ** Function         GATTs_HandleValueIndication
851 **
852 ** Description      This function sends a handle value indication to a client.
853 **
854 ** Parameter        conn_id: connection identifier.
855 **                  attr_handle: Attribute handle of this handle value indication.
856 **                  val_len: Length of the indicated attribute value.
857 **                  p_val: Pointer to the indicated attribute value data.
858 **
859 ** Returns          GATT_SUCCESS if sucessfully sent or queued; otherwise error code.
860 **
861 *******************************************************************************/
862 extern  tGATT_STATUS GATTS_HandleValueIndication (UINT16 conn_id,
863                                                   UINT16 attr_handle,
864                                                   UINT16 val_len, UINT8 *p_val);
865 
866 /*******************************************************************************
867 **
868 ** Function         GATTS_HandleValueNotification
869 **
870 ** Description      This function sends a handle value notification to a client.
871 **
872 ** Parameter       conn_id: connection identifier.
873 **                  attr_handle: Attribute handle of this handle value indication.
874 **                  val_len: Length of the indicated attribute value.
875 **                  p_val: Pointer to the indicated attribute value data.
876 **
877 ** Returns          GATT_SUCCESS if sucessfully sent; otherwise error code.
878 **
879 *******************************************************************************/
880 extern  tGATT_STATUS GATTS_HandleValueNotification (UINT16 conn_id, UINT16 attr_handle,
881                                                     UINT16 val_len, UINT8 *p_val);
882 
883 
884 /*******************************************************************************
885 **
886 ** Function         GATTS_SendRsp
887 **
888 ** Description      This function sends the server response to client.
889 **
890 ** Parameter        conn_id: connection identifier.
891 **                  trans_id: transaction id
892 **                  status: response status
893 **                  p_msg: pointer to message parameters structure.
894 **
895 ** Returns          GATT_SUCCESS if sucessfully sent; otherwise error code.
896 **
897 *******************************************************************************/
898 extern  tGATT_STATUS GATTS_SendRsp (UINT16 conn_id,  UINT32 trans_id,
899                                     tGATT_STATUS status, tGATTS_RSP *p_msg);
900 
901 
902 /*******************************************************************************/
903 /* GATT Profile Client Functions */
904 /*******************************************************************************/
905 
906 /*******************************************************************************
907 **
908 ** Function         GATTC_ConfigureMTU
909 **
910 ** Description      This function is called to configure the ATT MTU size for
911 **                  a connection on an LE transport.
912 **
913 ** Parameters       conn_id: connection identifier.
914 **                  mtu    - attribute MTU size..
915 **
916 ** Returns          GATT_SUCCESS if command started successfully.
917 **
918 *******************************************************************************/
919 extern tGATT_STATUS GATTC_ConfigureMTU (UINT16 conn_id, UINT16  mtu);
920 
921 /*******************************************************************************
922 **
923 ** Function         GATTC_Discover
924 **
925 ** Description      This function is called to do a discovery procedure on ATT server.
926 **
927 ** Parameters       conn_id: connection identifier.
928 **                  disc_type:discovery type.
929 **                  p_param: parameters of discovery requirement.
930 **
931 ** Returns          GATT_SUCCESS if command received/sent successfully.
932 **
933 *******************************************************************************/
934 extern tGATT_STATUS GATTC_Discover (UINT16 conn_id,
935                                     tGATT_DISC_TYPE disc_type,
936                                     tGATT_DISC_PARAM *p_param );
937 /*******************************************************************************
938 **
939 ** Function         GATTC_Read
940 **
941 ** Description      This function is called to read the value of an attribute from
942 **                  the server.
943 **
944 ** Parameters       conn_id: connection identifier.
945 **                  type    - attribute read type.
946 **                  p_read  - read operation parameters.
947 **
948 ** Returns          GATT_SUCCESS if command started successfully.
949 **
950 *******************************************************************************/
951 extern tGATT_STATUS GATTC_Read (UINT16 conn_id, tGATT_READ_TYPE type,
952                                 tGATT_READ_PARAM *p_read);
953 
954 /*******************************************************************************
955 **
956 ** Function         GATTC_Write
957 **
958 ** Description      This function is called to read the value of an attribute from
959 **                  the server.
960 **
961 ** Parameters       conn_id: connection identifier.
962 **                  type    - attribute write type.
963 **                  p_write  - write operation parameters.
964 **
965 ** Returns          GATT_SUCCESS if command started successfully.
966 **
967 *******************************************************************************/
968 extern tGATT_STATUS GATTC_Write (UINT16 conn_id, tGATT_WRITE_TYPE type,
969                                  tGATT_VALUE *p_write);
970 
971 
972 /*******************************************************************************
973 **
974 ** Function         GATTC_ExecuteWrite
975 **
976 ** Description      This function is called to send an Execute write request to
977 **                  the server.
978 **
979 ** Parameters       conn_id: connection identifier.
980 **                  is_execute - to execute or cancel the prepare write requet(s)
981 **
982 ** Returns          GATT_SUCCESS if command started successfully.
983 **
984 *******************************************************************************/
985 extern tGATT_STATUS GATTC_ExecuteWrite (UINT16 conn_id, BOOLEAN is_execute);
986 
987 /*******************************************************************************
988 **
989 ** Function         GATTC_SendHandleValueConfirm
990 **
991 ** Description      This function is called to send a handle value confirmation
992 **                  as response to a handle value notification from server.
993 **
994 ** Parameters       conn_id: connection identifier.
995 **                  handle: the handle of the attribute confirmation.
996 **
997 ** Returns          GATT_SUCCESS if command started successfully.
998 **
999 *******************************************************************************/
1000 extern tGATT_STATUS GATTC_SendHandleValueConfirm (UINT16 conn_id, UINT16 handle);
1001 
1002 
1003 /*******************************************************************************
1004 **
1005 ** Function         GATT_SetIdleTimeout
1006 **
1007 ** Description      This function (common to both client and server) sets the idle
1008 **                  timeout for a tansport connection
1009 **
1010 ** Parameter        bd_addr:   target device bd address.
1011 **                  idle_tout: timeout value in seconds.
1012 **                  transport: trasnport option.
1013 **
1014 ** Returns          void
1015 **
1016 *******************************************************************************/
1017 extern void GATT_SetIdleTimeout (BD_ADDR bd_addr, UINT16 idle_tout,
1018                                  tGATT_TRANSPORT transport);
1019 
1020 
1021 /*******************************************************************************
1022 **
1023 ** Function         GATT_Register
1024 **
1025 ** Description      This function is called to register an  application
1026 **                  with GATT
1027 **
1028 ** Parameter        p_app_uuid128: Application UUID
1029 **                  p_cb_info: callback functions.
1030 **
1031 ** Returns          0 for error, otherwise the index of the client registered with GATT
1032 **
1033 *******************************************************************************/
1034 extern  tGATT_IF GATT_Register (tBT_UUID *p_app_uuid128, tGATT_CBACK *p_cb_info);
1035 
1036 /*******************************************************************************
1037 **
1038 ** Function         GATT_Deregister
1039 **
1040 ** Description      This function deregistered the application from GATT.
1041 **
1042 ** Parameters       gatt_if: applicaiton interface.
1043 **
1044 ** Returns          None.
1045 **
1046 *******************************************************************************/
1047 extern void GATT_Deregister (tGATT_IF gatt_if);
1048 
1049 /*******************************************************************************
1050 **
1051 ** Function         GATT_StartIf
1052 **
1053 ** Description      This function is called after registration to start receiving
1054 **                  callbacks for registered interface.  Function may call back
1055 **                  with connection status and queued notifications
1056 **
1057 ** Parameter        gatt_if: applicaiton interface.
1058 **
1059 ** Returns          None
1060 **
1061 *******************************************************************************/
1062 extern  void GATT_StartIf (tGATT_IF gatt_if);
1063 
1064 /*******************************************************************************
1065 **
1066 ** Function         GATT_Connect
1067 **
1068 ** Description      This function initiate a connecttion to a remote device on GATT
1069 **                  channel.
1070 **
1071 ** Parameters       gatt_if: applicaiton interface
1072 **                  bd_addr: peer device address.
1073 **                  is_direct: is a direct connection or a background auto connection
1074 **                  transport : Physical transport for GATT connection (BR/EDR or LE)
1075 **                  opportunistic: will not keep device connected if other apps
1076 **                      disconnect, will not update connected apps counter, when
1077 **                      disconnected won't cause physical disconnection.
1078 **
1079 ** Returns          TRUE if connection started; FALSE if connection start failure.
1080 **
1081 *******************************************************************************/
1082 extern BOOLEAN GATT_Connect (tGATT_IF gatt_if, BD_ADDR bd_addr,
1083                              BOOLEAN is_direct, tBT_TRANSPORT transport,
1084                              BOOLEAN opportunistic);
1085 
1086 
1087 /*******************************************************************************
1088 **
1089 ** Function         GATT_CancelConnect
1090 **
1091 ** Description      This function terminate the connection initaition to a remote
1092 **                  device on GATT channel.
1093 **
1094 ** Parameters       gatt_if: client interface. If 0 used as unconditionally disconnect,
1095 **                          typically used for direct connection cancellation.
1096 **                  bd_addr: peer device address.
1097 **                  is_direct: is a direct conenection or a background auto connection
1098 **
1099 ** Returns          TRUE if connection started; FALSE if connection start failure.
1100 **
1101 *******************************************************************************/
1102 extern BOOLEAN GATT_CancelConnect (tGATT_IF gatt_if, BD_ADDR bd_addr,
1103                                    BOOLEAN is_direct);
1104 
1105 /*******************************************************************************
1106 **
1107 ** Function         GATT_Disconnect
1108 **
1109 ** Description      This function disconnect the GATT channel for this registered
1110 **                  application.
1111 **
1112 ** Parameters       conn_id: connection identifier.
1113 **
1114 ** Returns          GATT_SUCCESS if disconnected.
1115 **
1116 *******************************************************************************/
1117 extern tGATT_STATUS GATT_Disconnect (UINT16 conn_id);
1118 
1119 
1120 
1121 /*******************************************************************************
1122 **
1123 ** Function         GATT_GetConnectionInfor
1124 **
1125 ** Description      This function use conn_id to find its associated BD address and applciation
1126 **                  interface
1127 **
1128 ** Parameters        conn_id: connection id  (input)
1129 **                   p_gatt_if: applicaiton interface (output)
1130 **                   bd_addr: peer device address. (output)
1131 **                   transport :  physical transport of the GATT connection (BR/EDR or LE)
1132 **
1133 ** Returns          TRUE the ligical link information is found for conn_id
1134 **
1135 *******************************************************************************/
1136 extern BOOLEAN GATT_GetConnectionInfor(UINT16 conn_id, tGATT_IF *p_gatt_if,
1137                                        BD_ADDR bd_addr, tBT_TRANSPORT *p_transport);
1138 
1139 
1140 /*******************************************************************************
1141 **
1142 ** Function         GATT_GetConnIdIfConnected
1143 **
1144 ** Description      This function find the conn_id if the logical link for BD address
1145 **                  and applciation interface is connected
1146 **
1147 ** Parameters        gatt_if: applicaiton interface (input)
1148 **                   bd_addr: peer device address. (input)
1149 **                   p_conn_id: connection id  (output)
1150 **                   transport :  physical transport of the GATT connection (BR/EDR or LE)
1151 **
1152 ** Returns          TRUE the ligical link is connected
1153 **
1154 *******************************************************************************/
1155 extern BOOLEAN GATT_GetConnIdIfConnected(tGATT_IF gatt_if, BD_ADDR bd_addr,
1156                                          UINT16 *p_conn_id, tBT_TRANSPORT transport);
1157 
1158 
1159 /*******************************************************************************
1160 **
1161 ** Function         GATT_Listen
1162 **
1163 ** Description      This function start or stop LE advertisement and listen for
1164 **                  connection.
1165 **
1166 ** Parameters       gatt_if: applicaiton interface
1167 **                  p_bd_addr: listen for specific address connection, or NULL for
1168 **                             listen to all device connection.
1169 **                  start: is a direct conenection or a background auto connection
1170 **
1171 ** Returns          TRUE if advertisement is started; FALSE if adv start failure.
1172 **
1173 *******************************************************************************/
1174 extern BOOLEAN GATT_Listen (tGATT_IF gatt_if, BOOLEAN start, BD_ADDR_PTR bd_addr);
1175 
1176 /*******************************************************************************
1177 **
1178 ** Function         GATT_ConfigServiceChangeCCC
1179 **
1180 ** Description      Configure service change indication on remote device
1181 **
1182 ** Returns          None.
1183 **
1184 *******************************************************************************/
1185 extern void GATT_ConfigServiceChangeCCC (BD_ADDR remote_bda, BOOLEAN enable,
1186                                                     tBT_TRANSPORT transport);
1187 
1188 #ifdef __cplusplus
1189 
1190 }
1191 #endif
1192 
1193 #endif  /* GATT_API_H */
1194