1 /******************************************************************************
3 * Copyright (C) 2008-2012 Broadcom Corporation
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:
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
17 ******************************************************************************/
19 /******************************************************************************
21 * this file contains the main GATT server attributes access request
24 ******************************************************************************/
26 #include "bt_target.h"
32 #if BLE_INCLUDED == TRUE
34 #define GATTP_MAX_NUM_INC_SVR 0
35 #define GATTP_MAX_CHAR_NUM 2
36 #define GATTP_MAX_ATTR_NUM (GATTP_MAX_CHAR_NUM * 2 + GATTP_MAX_NUM_INC_SVR + 1)
37 #define GATTP_MAX_CHAR_VALUE_SIZE 50
39 #ifndef GATTP_ATTR_DB_SIZE
40 #define GATTP_ATTR_DB_SIZE GATT_DB_MEM_SIZE(GATTP_MAX_NUM_INC_SVR, GATTP_MAX_CHAR_NUM, GATTP_MAX_CHAR_VALUE_SIZE)
43 static void gatt_request_cback(UINT16 conn_id, UINT32 trans_id, UINT8 op_code, tGATTS_DATA *p_data);
44 static void gatt_connect_cback(tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id, BOOLEAN connected,
45 tGATT_DISCONN_REASON reason, tBT_TRANSPORT transport);
46 static void gatt_disc_res_cback(UINT16 conn_id, tGATT_DISC_TYPE disc_type, tGATT_DISC_RES *p_data);
47 static void gatt_disc_cmpl_cback(UINT16 conn_id, tGATT_DISC_TYPE disc_type, tGATT_STATUS status);
48 static void gatt_cl_op_cmpl_cback(UINT16 conn_id, tGATTC_OPTYPE op, tGATT_STATUS status,
49 tGATT_CL_COMPLETE *p_data);
51 static void gatt_cl_start_config_ccc(tGATT_PROFILE_CLCB *p_clcb);
54 static tGATT_CBACK gatt_profile_cback =
57 gatt_cl_op_cmpl_cback,
65 /*******************************************************************************
67 ** Function gatt_profile_find_conn_id_by_bd_addr
69 ** Description Find the connection ID by remote address
71 ** Returns Connection ID
73 *******************************************************************************/
74 UINT16 gatt_profile_find_conn_id_by_bd_addr(BD_ADDR remote_bda)
76 UINT16 conn_id = GATT_INVALID_CONN_ID;
77 GATT_GetConnIdIfConnected (gatt_cb.gatt_if, remote_bda, &conn_id, BT_TRANSPORT_LE);
81 /*******************************************************************************
83 ** Function gatt_profile_find_clcb_by_conn_id
85 ** Description find clcb by Connection ID
87 ** Returns Pointer to the found link conenction control block.
89 *******************************************************************************/
90 static tGATT_PROFILE_CLCB *gatt_profile_find_clcb_by_conn_id(UINT16 conn_id)
93 tGATT_PROFILE_CLCB *p_clcb = NULL;
95 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
97 if (p_clcb->in_use && p_clcb->conn_id == conn_id)
104 /*******************************************************************************
106 ** Function gatt_profile_find_clcb_by_bd_addr
108 ** Description The function searches all LCBs with macthing bd address.
110 ** Returns Pointer to the found link conenction control block.
112 *******************************************************************************/
113 static tGATT_PROFILE_CLCB *gatt_profile_find_clcb_by_bd_addr(BD_ADDR bda, tBT_TRANSPORT transport)
116 tGATT_PROFILE_CLCB *p_clcb = NULL;
118 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
120 if (p_clcb->in_use && p_clcb->transport == transport &&
121 p_clcb->connected && !memcmp(p_clcb->bda, bda, BD_ADDR_LEN))
128 /*******************************************************************************
130 ** Function gatt_profile_clcb_alloc
132 ** Description The function allocates a GATT profile connection link control block
134 ** Returns NULL if not found. Otherwise pointer to the connection link block.
136 *******************************************************************************/
137 tGATT_PROFILE_CLCB *gatt_profile_clcb_alloc (UINT16 conn_id, BD_ADDR bda, tBT_TRANSPORT tranport)
140 tGATT_PROFILE_CLCB *p_clcb = NULL;
142 for (i_clcb = 0, p_clcb= gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; i_clcb++, p_clcb++)
146 p_clcb->in_use = TRUE;
147 p_clcb->conn_id = conn_id;
148 p_clcb->connected = TRUE;
149 p_clcb->transport = tranport;
150 memcpy (p_clcb->bda, bda, BD_ADDR_LEN);
154 if(i_clcb < GATT_MAX_APPS)
160 /*******************************************************************************
162 ** Function gatt_profile_clcb_dealloc
164 ** Description The function deallocates a GATT profile connection link control block
168 *******************************************************************************/
169 void gatt_profile_clcb_dealloc (tGATT_PROFILE_CLCB *p_clcb)
171 memset(p_clcb, 0, sizeof(tGATT_PROFILE_CLCB));
174 /*******************************************************************************
176 ** Function gatt_request_cback
178 ** Description GATT profile attribute access request callback.
182 *******************************************************************************/
183 static void gatt_request_cback (UINT16 conn_id, UINT32 trans_id, tGATTS_REQ_TYPE type,
186 UINT8 status = GATT_INVALID_PDU;
188 BOOLEAN ignore = FALSE;
190 memset(&rsp_msg, 0, sizeof(tGATTS_RSP));
194 case GATTS_REQ_TYPE_READ:
195 status = GATT_READ_NOT_PERMIT;
198 case GATTS_REQ_TYPE_WRITE:
199 status = GATT_WRITE_NOT_PERMIT;
202 case GATTS_REQ_TYPE_WRITE_EXEC:
205 GATT_TRACE_EVENT("Ignore GATT_REQ_EXEC_WRITE/WRITE_CMD" );
208 case GATTS_REQ_TYPE_MTU:
209 GATT_TRACE_EVENT("Get MTU exchange new mtu size: %d", p_data->mtu);
214 GATT_TRACE_EVENT("Unknown/unexpected LE GAP ATT request: 0x%02x", type);
219 GATTS_SendRsp (conn_id, trans_id, status, &rsp_msg);
223 /*******************************************************************************
225 ** Function gatt_connect_cback
227 ** Description Gatt profile connection callback.
231 *******************************************************************************/
232 static void gatt_connect_cback (tGATT_IF gatt_if, BD_ADDR bda, UINT16 conn_id,
233 BOOLEAN connected, tGATT_DISCONN_REASON reason,
234 tBT_TRANSPORT transport)
238 GATT_TRACE_EVENT("%s: from %08x%04x connected:%d conn_id=%d reason = 0x%04x", __func__,
239 (bda[0]<<24)+(bda[1]<<16)+(bda[2]<<8)+bda[3],
240 (bda[4]<<8)+bda[5], connected, conn_id, reason);
242 tGATT_PROFILE_CLCB *p_clcb = gatt_profile_find_clcb_by_bd_addr(bda, transport);
245 p_clcb = gatt_profile_clcb_alloc(conn_id, bda, transport);
250 p_clcb->connected = TRUE;
251 p_clcb->ccc_stage = GATT_SVC_CHANGED_SERVICE;
252 gatt_cl_start_config_ccc(p_clcb);
255 gatt_profile_clcb_dealloc(p_clcb);
259 /*******************************************************************************
261 ** Function gatt_profile_db_init
263 ** Description Initializa the GATT profile attribute database.
265 *******************************************************************************/
266 void gatt_profile_db_init (void)
268 tBT_UUID app_uuid = {LEN_UUID_128, {0}};
269 tBT_UUID uuid = {LEN_UUID_16, {UUID_SERVCLASS_GATT_SERVER}};
270 UINT16 service_handle = 0;
273 /* Fill our internal UUID with a fixed pattern 0x81 */
274 memset (&app_uuid.uu.uuid128, 0x81, LEN_UUID_128);
277 /* Create a GATT profile service */
278 gatt_cb.gatt_if = GATT_Register(&app_uuid, &gatt_profile_cback);
279 GATT_StartIf(gatt_cb.gatt_if);
281 service_handle = GATTS_CreateService (gatt_cb.gatt_if , &uuid, 0, GATTP_MAX_ATTR_NUM, TRUE);
282 /* add Service Changed characteristic
284 uuid.uu.uuid16 = gatt_cb.gattp_attr.uuid = GATT_UUID_GATT_SRV_CHGD;
285 gatt_cb.gattp_attr.service_change = 0;
286 gatt_cb.gattp_attr.handle =
287 gatt_cb.handle_of_h_r = GATTS_AddCharacteristic(service_handle, &uuid, 0, GATT_CHAR_PROP_BIT_INDICATE);
289 GATT_TRACE_DEBUG ("gatt_profile_db_init: handle of service changed%d",
290 gatt_cb.handle_of_h_r );
294 status = GATTS_StartService (gatt_cb.gatt_if, service_handle, GATTP_TRANSPORT_SUPPORTED );
296 GATT_TRACE_DEBUG ("gatt_profile_db_init: gatt_if=%d start status%d",
297 gatt_cb.gatt_if, status);
300 /*******************************************************************************
302 ** Function gatt_config_ccc_complete
304 ** Description The function finish the service change ccc configuration
308 *******************************************************************************/
309 static void gatt_config_ccc_complete(tGATT_PROFILE_CLCB *p_clcb)
311 GATT_Disconnect(p_clcb->conn_id);
312 gatt_profile_clcb_dealloc(p_clcb);
315 /*******************************************************************************
317 ** Function gatt_disc_res_cback
319 ** Description Gatt profile discovery result callback
323 *******************************************************************************/
324 static void gatt_disc_res_cback (UINT16 conn_id, tGATT_DISC_TYPE disc_type, tGATT_DISC_RES *p_data)
326 tGATT_PROFILE_CLCB *p_clcb = gatt_profile_find_clcb_by_conn_id(conn_id);
333 case GATT_DISC_SRVC_BY_UUID:/* stage 1 */
334 p_clcb->e_handle = p_data->value.group_value.e_handle;
335 p_clcb->ccc_result ++;
338 case GATT_DISC_CHAR:/* stage 2 */
339 p_clcb->s_handle = p_data->value.dclr_value.val_handle;
340 p_clcb->ccc_result ++;
343 case GATT_DISC_CHAR_DSCPT: /* stage 3 */
344 if (p_data->type.uu.uuid16 == GATT_UUID_CHAR_CLIENT_CONFIG)
346 p_clcb->s_handle = p_data->handle;
347 p_clcb->ccc_result ++;
353 /*******************************************************************************
355 ** Function gatt_disc_cmpl_cback
357 ** Description Gatt profile discovery complete callback
361 *******************************************************************************/
362 static void gatt_disc_cmpl_cback (UINT16 conn_id, tGATT_DISC_TYPE disc_type, tGATT_STATUS status)
364 tGATT_PROFILE_CLCB *p_clcb = gatt_profile_find_clcb_by_conn_id(conn_id);
369 if (status == GATT_SUCCESS && p_clcb->ccc_result > 0)
371 p_clcb->ccc_result = 0;
372 p_clcb->ccc_stage ++;
373 gatt_cl_start_config_ccc(p_clcb);
375 GATT_TRACE_ERROR("%s() - Register for service changed indication failure", __FUNCTION__);
376 /* free the connection */
377 gatt_config_ccc_complete (p_clcb);
381 /*******************************************************************************
383 ** Function gatt_cl_op_cmpl_cback
385 ** Description Gatt profile client operation complete callback
389 *******************************************************************************/
390 static void gatt_cl_op_cmpl_cback (UINT16 conn_id, tGATTC_OPTYPE op,
391 tGATT_STATUS status, tGATT_CL_COMPLETE *p_data)
399 /*******************************************************************************
401 ** Function gatt_cl_start_config_ccc
403 ** Description Gatt profile start configure service change CCC
407 *******************************************************************************/
408 static void gatt_cl_start_config_ccc(tGATT_PROFILE_CLCB *p_clcb)
410 tGATT_DISC_PARAM srvc_disc_param;
411 tGATT_VALUE ccc_value;
413 GATT_TRACE_DEBUG("%s() - stage: %d", __FUNCTION__, p_clcb->ccc_stage);
415 memset (&srvc_disc_param, 0 , sizeof(tGATT_DISC_PARAM));
416 memset (&ccc_value, 0 , sizeof(tGATT_VALUE));
418 switch(p_clcb->ccc_stage)
420 case GATT_SVC_CHANGED_SERVICE: /* discover GATT service */
421 srvc_disc_param.s_handle = 1;
422 srvc_disc_param.e_handle = 0xffff;
423 srvc_disc_param.service.len = 2;
424 srvc_disc_param.service.uu.uuid16 = UUID_SERVCLASS_GATT_SERVER;
425 if (GATTC_Discover (p_clcb->conn_id, GATT_DISC_SRVC_BY_UUID, &srvc_disc_param) != GATT_SUCCESS)
427 GATT_TRACE_ERROR("%s() - ccc service error", __FUNCTION__);
428 gatt_config_ccc_complete(p_clcb);
432 case GATT_SVC_CHANGED_CHARACTERISTIC: /* discover service change char */
433 srvc_disc_param.s_handle = 1;
434 srvc_disc_param.e_handle = p_clcb->e_handle;
435 srvc_disc_param.service.len = 2;
436 srvc_disc_param.service.uu.uuid16 = GATT_UUID_GATT_SRV_CHGD;
437 if (GATTC_Discover (p_clcb->conn_id, GATT_DISC_CHAR, &srvc_disc_param) != GATT_SUCCESS)
439 GATT_TRACE_ERROR("%s() - ccc char error", __FUNCTION__);
440 gatt_config_ccc_complete(p_clcb);
444 case GATT_SVC_CHANGED_DESCRIPTOR: /* discover service change ccc */
445 srvc_disc_param.s_handle = p_clcb->s_handle;
446 srvc_disc_param.e_handle = p_clcb->e_handle;
447 if (GATTC_Discover (p_clcb->conn_id, GATT_DISC_CHAR_DSCPT, &srvc_disc_param) != GATT_SUCCESS)
449 GATT_TRACE_ERROR("%s() - ccc char descriptor error", __FUNCTION__);
450 gatt_config_ccc_complete(p_clcb);
454 case GATT_SVC_CHANGED_CONFIGURE_CCCD: /* write ccc */
455 ccc_value.handle = p_clcb->s_handle;
457 ccc_value.value[0] = GATT_CLT_CONFIG_INDICATION;
458 if (GATTC_Write (p_clcb->conn_id, GATT_WRITE, &ccc_value) != GATT_SUCCESS)
460 GATT_TRACE_ERROR("%s() - write ccc error", __FUNCTION__);
461 gatt_config_ccc_complete(p_clcb);
467 /*******************************************************************************
469 ** Function GATT_ConfigServiceChangeCCC
471 ** Description Configure service change indication on remote device
475 *******************************************************************************/
476 void GATT_ConfigServiceChangeCCC (BD_ADDR remote_bda, BOOLEAN enable, tBT_TRANSPORT transport)
478 tGATT_PROFILE_CLCB *p_clcb = gatt_profile_find_clcb_by_bd_addr (remote_bda, transport);
481 p_clcb = gatt_profile_clcb_alloc (0, remote_bda, transport);
486 if (GATT_GetConnIdIfConnected (gatt_cb.gatt_if, remote_bda, &p_clcb->conn_id, transport))
488 p_clcb->connected = TRUE;
490 /* hold the link here */
491 GATT_Connect(gatt_cb.gatt_if, remote_bda, TRUE, transport);
492 p_clcb->ccc_stage = GATT_SVC_CHANGED_CONNECTING;
494 if (!p_clcb->connected)
496 /* wait for connection */
500 p_clcb->ccc_stage ++;
501 gatt_cl_start_config_ccc(p_clcb);
504 #endif /* BLE_INCLUDED */