/******************************************************************************
*
* Copyright (C) 2003-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This file contains the GATT client main functions and state machine.
*
******************************************************************************/
#include "bt_target.h"
#if defined(BTA_GATT_INCLUDED) && (BTA_GATT_INCLUDED == TRUE)
#include <string.h>
#include "bta_gattc_int.h"
#include "gki.h"
/*****************************************************************************
** Constants and types
*****************************************************************************/
/* state machine action enumeration list */
enum
{
BTA_GATTC_OPEN,
BTA_GATTC_OPEN_FAIL,
BTA_GATTC_OPEN_ERROR,
BTA_GATTC_CANCEL_OPEN,
BTA_GATTC_CANCEL_OPEN_OK,
BTA_GATTC_CANCEL_OPEN_ERROR,
BTA_GATTC_CONN,
BTA_GATTC_START_DISCOVER,
BTA_GATTC_DISC_CMPL,
BTA_GATTC_Q_CMD,
BTA_GATTC_CLOSE,
BTA_GATTC_CLOSE_FAIL,
BTA_GATTC_READ,
BTA_GATTC_WRITE,
BTA_GATTC_OP_CMPL,
BTA_GATTC_SEARCH,
BTA_GATTC_FAIL,
BTA_GATTC_CONFIRM,
BTA_GATTC_EXEC,
BTA_GATTC_READ_MULTI,
BTA_GATTC_CI_OPEN,
BTA_GATTC_CI_LOAD,
BTA_GATTC_CI_SAVE,
BTA_GATTC_CACHE_OPEN,
BTA_GATTC_IGNORE_OP_CMPL,
BTA_GATTC_DISC_CLOSE,
BTA_GATTC_RESTART_DISCOVER,
BTA_GATTC_IGNORE
};
/* type for action functions */
typedef void (*tBTA_GATTC_ACTION)(tBTA_GATTC_CLCB *p_clcb, tBTA_GATTC_DATA *p_data);
/* action function list */
const tBTA_GATTC_ACTION bta_gattc_action[] =
{
bta_gattc_open,
bta_gattc_open_fail,
bta_gattc_open_error,
bta_gattc_cancel_open,
bta_gattc_cancel_open_ok,
bta_gattc_cancel_open_error,
bta_gattc_conn,
bta_gattc_start_discover,
bta_gattc_disc_cmpl,
bta_gattc_q_cmd,
bta_gattc_close,
bta_gattc_close_fail,
bta_gattc_read,
bta_gattc_write,
bta_gattc_op_cmpl,
bta_gattc_search,
bta_gattc_fail,
bta_gattc_confirm,
bta_gattc_execute,
bta_gattc_read_multi,
bta_gattc_ci_open,
bta_gattc_ci_load,
bta_gattc_ci_save,
bta_gattc_cache_open,
bta_gattc_ignore_op_cmpl,
bta_gattc_disc_close,
bta_gattc_restart_discover
};
/* state table information */
#define BTA_GATTC_ACTIONS 1 /* number of actions */
#define BTA_GATTC_NEXT_STATE 1 /* position of next state */
#define BTA_GATTC_NUM_COLS 2 /* number of columns in state tables */
/* state table for idle state */
static const UINT8 bta_gattc_st_idle[][BTA_GATTC_NUM_COLS] =
{
/* Event Action 1 Next state */
/* BTA_GATTC_API_OPEN_EVT */ {BTA_GATTC_OPEN, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_INT_OPEN_FAIL_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_CANCEL_OPEN_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_INT_CANCEL_OPEN_OK_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_READ_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_WRITE_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_EXEC_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_CLOSE_EVT */ {BTA_GATTC_CLOSE_FAIL, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_SEARCH_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_CONFIRM_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_READ_MULTI_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_REFRESH_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_INT_CONN_EVT */ {BTA_GATTC_CONN, BTA_GATTC_CONN_ST},
/* BTA_GATTC_INT_DISCOVER_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_DISCOVER_CMPL_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_OP_CMPL_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_INT_DISCONN_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* ===> for cache loading, saving */
/* BTA_GATTC_START_CACHE_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_CI_CACHE_OPEN_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_CI_CACHE_LOAD_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_CI_CACHE_SAVE_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_IDLE_ST}
};
/* state table for wait for open state */
static const UINT8 bta_gattc_st_w4_conn[][BTA_GATTC_NUM_COLS] =
{
/* Event Action 1 Next state */
/* BTA_GATTC_API_OPEN_EVT */ {BTA_GATTC_OPEN, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_INT_OPEN_FAIL_EVT */ {BTA_GATTC_OPEN_FAIL, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_CANCEL_OPEN_EVT */ {BTA_GATTC_CANCEL_OPEN, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_INT_CANCEL_OPEN_OK_EVT */ {BTA_GATTC_CANCEL_OPEN_OK, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_READ_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_API_WRITE_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_API_EXEC_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_API_CLOSE_EVT */ {BTA_GATTC_CLOSE_FAIL, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_API_SEARCH_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_API_CONFIRM_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_API_READ_MULTI_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_API_REFRESH_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_INT_CONN_EVT */ {BTA_GATTC_CONN, BTA_GATTC_CONN_ST},
/* BTA_GATTC_INT_DISCOVER_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_DISCOVER_CMPL_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_OP_CMPL_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_INT_DISCONN_EVT */ {BTA_GATTC_CLOSE, BTA_GATTC_IDLE_ST},
/* ===> for cache loading, saving */
/* BTA_GATTC_START_CACHE_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_CI_CACHE_OPEN_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_CI_CACHE_LOAD_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_W4_CONN_ST},
/* BTA_GATTC_CI_CACHE_SAVE_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_W4_CONN_ST}
};
/* state table for open state */
static const UINT8 bta_gattc_st_connected[][BTA_GATTC_NUM_COLS] =
{
/* Event Action 1 Next state */
/* BTA_GATTC_API_OPEN_EVT */ {BTA_GATTC_OPEN_ERROR, BTA_GATTC_CONN_ST},
/* BTA_GATTC_INT_OPEN_FAIL_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_CONN_ST},
/* BTA_GATTC_API_CANCEL_OPEN_EVT */ {BTA_GATTC_CANCEL_OPEN_ERROR, BTA_GATTC_CONN_ST},
/* BTA_GATTC_INT_CANCEL_OPEN_OK_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_CONN_ST},
/* BTA_GATTC_API_READ_EVT */ {BTA_GATTC_READ, BTA_GATTC_CONN_ST},
/* BTA_GATTC_API_WRITE_EVT */ {BTA_GATTC_WRITE, BTA_GATTC_CONN_ST},
/* BTA_GATTC_API_EXEC_EVT */ {BTA_GATTC_EXEC, BTA_GATTC_CONN_ST},
/* BTA_GATTC_API_CLOSE_EVT */ {BTA_GATTC_CLOSE, BTA_GATTC_IDLE_ST},
/* BTA_GATTC_API_SEARCH_EVT */ {BTA_GATTC_SEARCH, BTA_GATTC_CONN_ST},
/* BTA_GATTC_API_CONFIRM_EVT */ {BTA_GATTC_CONFIRM, BTA_GATTC_CONN_ST},
/* BTA_GATTC_API_READ_MULTI_EVT */ {BTA_GATTC_READ_MULTI, BTA_GATTC_CONN_ST},
/* BTA_GATTC_API_REFRESH_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_CONN_ST},
/* BTA_GATTC_INT_CONN_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_CONN_ST},
/* BTA_GATTC_INT_DISCOVER_EVT */ {BTA_GATTC_START_DISCOVER, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_DISCOVER_CMPL_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_CONN_ST},
/* BTA_GATTC_OP_CMPL_EVT */ {BTA_GATTC_OP_CMPL, BTA_GATTC_CONN_ST},
/* BTA_GATTC_INT_DISCONN_EVT */ {BTA_GATTC_CLOSE, BTA_GATTC_IDLE_ST},
/* ===> for cache loading, saving */
/* BTA_GATTC_START_CACHE_EVT */ {BTA_GATTC_CACHE_OPEN, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_CI_CACHE_OPEN_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_CONN_ST},
/* BTA_GATTC_CI_CACHE_LOAD_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_CONN_ST},
/* BTA_GATTC_CI_CACHE_SAVE_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_CONN_ST}
};
/* state table for discover state */
static const UINT8 bta_gattc_st_discover[][BTA_GATTC_NUM_COLS] =
{
/* Event Action 1 Next state */
/* BTA_GATTC_API_OPEN_EVT */ {BTA_GATTC_OPEN_ERROR, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_INT_OPEN_FAIL_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_API_CANCEL_OPEN_EVT */ {BTA_GATTC_CANCEL_OPEN_ERROR, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_INT_CANCEL_OPEN_OK_EVT */ {BTA_GATTC_FAIL, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_API_READ_EVT */ {BTA_GATTC_Q_CMD, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_API_WRITE_EVT */ {BTA_GATTC_Q_CMD, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_API_EXEC_EVT */ {BTA_GATTC_Q_CMD, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_API_CLOSE_EVT */ {BTA_GATTC_DISC_CLOSE, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_API_SEARCH_EVT */ {BTA_GATTC_Q_CMD, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_API_CONFIRM_EVT */ {BTA_GATTC_CONFIRM, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_API_READ_MULTI_EVT */ {BTA_GATTC_Q_CMD, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_API_REFRESH_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_INT_CONN_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_INT_DISCOVER_EVT */ {BTA_GATTC_RESTART_DISCOVER, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_DISCOVER_CMPL_EVT */ {BTA_GATTC_DISC_CMPL, BTA_GATTC_CONN_ST},
/* BTA_GATTC_OP_CMPL_EVT */ {BTA_GATTC_IGNORE_OP_CMPL, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_INT_DISCONN_EVT */ {BTA_GATTC_CLOSE, BTA_GATTC_IDLE_ST},
/* ===> for cache loading, saving */
/* BTA_GATTC_START_CACHE_EVT */ {BTA_GATTC_IGNORE, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_CI_CACHE_OPEN_EVT */ {BTA_GATTC_CI_OPEN, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_CI_CACHE_LOAD_EVT */ {BTA_GATTC_CI_LOAD, BTA_GATTC_DISCOVER_ST},
/* BTA_GATTC_CI_CACHE_SAVE_EVT */ {BTA_GATTC_CI_SAVE, BTA_GATTC_DISCOVER_ST}
};
/* type for state table */
typedef const UINT8 (*tBTA_GATTC_ST_TBL)[BTA_GATTC_NUM_COLS];
/* state table */
const tBTA_GATTC_ST_TBL bta_gattc_st_tbl[] =
{
bta_gattc_st_idle,
bta_gattc_st_w4_conn,
bta_gattc_st_connected,
bta_gattc_st_discover
};
/*****************************************************************************
** Global data
*****************************************************************************/
/* GATTC control block */
#if BTA_DYNAMIC_MEMORY == FALSE
tBTA_GATTC_CB bta_gattc_cb;
#endif
#if BTA_GATT_DEBUG == TRUE
static char *gattc_evt_code(tBTA_GATTC_INT_EVT evt_code);
static char *gattc_state_code(tBTA_GATTC_STATE state_code);
#endif
/*******************************************************************************
**
** Function bta_gattc_sm_execute
**
** Description State machine event handling function for GATTC
**
**
** Returns void
**
*******************************************************************************/
void bta_gattc_sm_execute(tBTA_GATTC_CLCB *p_clcb, UINT16 event, tBTA_GATTC_DATA *p_data)
{
tBTA_GATTC_ST_TBL state_table;
UINT8 action;
int i;
#if BTA_GATT_DEBUG == TRUE
tBTA_GATTC_STATE in_state = p_clcb->state;
UINT16 in_event = event;
APPL_TRACE_DEBUG4("bta_gattc_sm_execute: State 0x%02x [%s], Event 0x%x[%s]", in_state,
gattc_state_code(in_state),
in_event,
gattc_evt_code(in_event));
#endif
/* look up the state table for the current state */
state_table = bta_gattc_st_tbl[p_clcb->state];
event &= 0x00FF;
/* set next state */
p_clcb->state = state_table[event][BTA_GATTC_NEXT_STATE];
/* execute action functions */
for (i = 0; i < BTA_GATTC_ACTIONS; i++)
{
if ((action = state_table[event][i]) != BTA_GATTC_IGNORE)
{
(*bta_gattc_action[action])(p_clcb, p_data);
}
else
{
break;
}
}
#if BTA_GATT_DEBUG == TRUE
if (in_state != p_clcb->state)
{
APPL_TRACE_DEBUG3("GATTC State Change: [%s] -> [%s] after Event [%s]",
gattc_state_code(in_state),
gattc_state_code(p_clcb->state),
gattc_evt_code(in_event));
}
#endif
}
/*******************************************************************************
**
** Function bta_gattc_hdl_event
**
** Description GATT client main event handling function.
**
**
** Returns void
**
*******************************************************************************/
BOOLEAN bta_gattc_hdl_event(BT_HDR *p_msg)
{
tBTA_GATTC_CB *p_cb = &bta_gattc_cb;
tBTA_GATTC_CLCB *p_clcb = NULL;
#if BTA_GATT_DEBUG == TRUE
APPL_TRACE_DEBUG1("bta_gattc_hdl_event: Event [%s]", gattc_evt_code(p_msg->event));
#endif
switch (p_msg->event)
{
case BTA_GATTC_API_REG_EVT:
bta_gattc_register(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_INT_START_IF_EVT:
bta_gattc_start_if(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_API_DEREG_EVT:
bta_gattc_deregister(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_INT_DEREG_EVT:
bta_gattc_int_deregister(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_API_OPEN_EVT:
bta_gattc_process_api_open(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_API_CANCEL_OPEN_EVT:
bta_gattc_process_api_open_cancel(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
case BTA_GATTC_API_REFRESH_EVT:
bta_gattc_process_api_refresh(p_cb, (tBTA_GATTC_DATA *) p_msg);
break;
default:
if ((p_clcb = bta_gattc_find_clcb_by_conn_id(p_msg->layer_specific))
!= NULL)
{
bta_gattc_sm_execute(p_clcb, p_msg->event, (tBTA_GATTC_DATA *) p_msg);
}
else
{
APPL_TRACE_ERROR1("Unknown conn ID: %d", p_msg->layer_specific);
}
break;
}
return(TRUE);
}
/*****************************************************************************
** Debug Functions
*****************************************************************************/
#if BTA_GATT_DEBUG == TRUE
/*******************************************************************************
**
** Function gattc_evt_code
**
** Description
**
** Returns void
**
*******************************************************************************/
static char *gattc_evt_code(tBTA_GATTC_INT_EVT evt_code)
{
switch (evt_code)
{
case BTA_GATTC_API_OPEN_EVT:
return "BTA_GATTC_API_OPEN_EVT";
case BTA_GATTC_INT_OPEN_FAIL_EVT:
return "BTA_GATTC_INT_OPEN_FAIL_EVT";
case BTA_GATTC_API_CANCEL_OPEN_EVT:
return "BTA_GATTC_API_CANCEL_OPEN_EVT";
case BTA_GATTC_INT_CANCEL_OPEN_OK_EVT:
return "BTA_GATTC_INT_CANCEL_OPEN_OK_EVT";
case BTA_GATTC_API_READ_EVT:
return "BTA_GATTC_API_READ_EVT";
case BTA_GATTC_API_WRITE_EVT:
return "BTA_GATTC_API_WRITE_EVT";
case BTA_GATTC_API_EXEC_EVT:
return "BTA_GATTC_API_EXEC_EVT";
case BTA_GATTC_API_CLOSE_EVT:
return "BTA_GATTC_API_CLOSE_EVT";
case BTA_GATTC_API_SEARCH_EVT:
return "BTA_GATTC_API_SEARCH_EVT";
case BTA_GATTC_API_CONFIRM_EVT:
return "BTA_GATTC_API_CONFIRM_EVT";
case BTA_GATTC_API_READ_MULTI_EVT:
return "BTA_GATTC_API_READ_MULTI_EVT";
case BTA_GATTC_INT_CONN_EVT:
return "BTA_GATTC_INT_CONN_EVT";
case BTA_GATTC_INT_DISCOVER_EVT:
return "BTA_GATTC_INT_DISCOVER_EVT";
case BTA_GATTC_DISCOVER_CMPL_EVT:
return "BTA_GATTC_DISCOVER_CMPL_EVT";
case BTA_GATTC_OP_CMPL_EVT:
return "BTA_GATTC_OP_CMPL_EVT";
case BTA_GATTC_INT_DISCONN_EVT:
return "BTA_GATTC_INT_DISCONN_EVT";
case BTA_GATTC_START_CACHE_EVT:
return "BTA_GATTC_START_CACHE_EVT";
case BTA_GATTC_CI_CACHE_OPEN_EVT:
return "BTA_GATTC_CI_CACHE_OPEN_EVT";
case BTA_GATTC_CI_CACHE_LOAD_EVT:
return "BTA_GATTC_CI_CACHE_LOAD_EVT";
case BTA_GATTC_CI_CACHE_SAVE_EVT:
return "BTA_GATTC_CI_CACHE_SAVE_EVT";
case BTA_GATTC_INT_START_IF_EVT:
return "BTA_GATTC_INT_START_IF_EVT";
case BTA_GATTC_API_REG_EVT:
return "BTA_GATTC_API_REG_EVT";
case BTA_GATTC_API_DEREG_EVT:
return "BTA_GATTC_API_DEREG_EVT";
case BTA_GATTC_API_REFRESH_EVT:
return "BTA_GATTC_API_REFRESH_EVT";
default:
return "unknown GATTC event code";
}
}
/*******************************************************************************
**
** Function gattc_state_code
**
** Description
**
** Returns void
**
*******************************************************************************/
static char *gattc_state_code(tBTA_GATTC_STATE state_code)
{
switch (state_code)
{
case BTA_GATTC_IDLE_ST:
return "GATTC_IDLE_ST";
case BTA_GATTC_W4_CONN_ST:
return "GATTC_W4_CONN_ST";
case BTA_GATTC_CONN_ST:
return "GATTC_CONN_ST";
case BTA_GATTC_DISCOVER_ST:
return "GATTC_DISCOVER_ST";
default:
return "unknown GATTC state code";
}
}
#endif /* Debug Functions */
#endif /* BTA_GATT_INCLUDED */