1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
|
/******************************************************************************
**
** File Name: bta_hd_main.c
**
** Description: This is the state machine definition for the HID Device
** service.
**
** Copyright (c) 2002-2011, Broadcom Corp., All Rights Reserved.
** Broadcom Bluetooth Core. Proprietary and confidential.
**
******************************************************************************/
#include <string.h>
#include "bt_target.h"
#include "data_types.h"
#include "bt_types.h"
#include "hidd_api.h"
#include "bta_hd_api.h"
#include "bta_hd_int.h"
#include "bd.h"
/*****************************************************************************
** Constants and types
*****************************************************************************/
/* state machine states */
enum
{
BTA_HD_IDLE_ST,
BTA_HD_LISTEN_ST,
BTA_HD_OPEN_ST
};
/* state machine action enumeration list */
enum
{
BTA_HD_INIT_CON_ACT,
BTA_HD_CLOSE_ACT,
BTA_HD_DISABLE_ACT,
BTA_HD_OPEN_ACT,
BTA_HD_OPN_CB_ACT,
BTA_HD_INPUT_ACT,
BTA_HD_DISCNTD_ACT,
BTA_HD_DISCNT_ACT,
BTA_HD_NUM_ACTIONS
};
#define BTA_HD_IGNORE BTA_HD_NUM_ACTIONS
/* type for action functions */
typedef void (*tBTA_HD_ACTION)(tBTA_HD_CB *p_cb, tBTA_HD_DATA *p_data);
/* action functions */
const tBTA_HD_ACTION bta_hd_action[] =
{
bta_hd_init_con_act,
bta_hd_close_act,
bta_hd_disable_act,
bta_hd_open_act,
bta_hd_opn_cb_act,
bta_hd_input_act,
bta_hd_discntd_act,
bta_hd_discnt_act
};
/* state table information */
#define BTA_HD_NUM_ACTS 1 /* number of actions */
#define BTA_HD_ACTION 0 /* position of action */
#define BTA_HD_NEXT_STATE 1 /* position of next state */
#define BTA_HD_NUM_COLS 2 /* number of columns in state tables */
/* state table for listen state */
const UINT8 bta_hd_st_listen[][BTA_HD_NUM_COLS] =
{
/* API_OPEN */ {BTA_HD_INIT_CON_ACT, BTA_HD_LISTEN_ST},
/* API_CLOSE */ {BTA_HD_CLOSE_ACT, BTA_HD_LISTEN_ST},
/* API_DISABLE */ {BTA_HD_DISABLE_ACT, BTA_HD_IDLE_ST},
/* API_INPUT */ {BTA_HD_IGNORE, BTA_HD_LISTEN_ST},
/* CBACK */ {BTA_HD_IGNORE, BTA_HD_LISTEN_ST},
/* CONNECTED */ {BTA_HD_OPEN_ACT, BTA_HD_OPEN_ST},
/* DISCONNECT */ {BTA_HD_DISCNTD_ACT, BTA_HD_LISTEN_ST}
};
/* state table for open state */
const UINT8 bta_hd_st_open[][BTA_HD_NUM_COLS] =
{
/* API_OPEN */ {BTA_HD_IGNORE, BTA_HD_OPEN_ST},
/* API_CLOSE */ {BTA_HD_CLOSE_ACT, BTA_HD_OPEN_ST},
/* API_DISABLE */ {BTA_HD_DISABLE_ACT, BTA_HD_IDLE_ST},
/* API_INPUT */ {BTA_HD_INPUT_ACT, BTA_HD_OPEN_ST},
/* CBACK */ {BTA_HD_OPN_CB_ACT, BTA_HD_OPEN_ST},
/* CONNECTED */ {BTA_HD_IGNORE, BTA_HD_OPEN_ST},
/* DISCONNECT */ {BTA_HD_DISCNT_ACT, BTA_HD_LISTEN_ST}
};
/* type for state table */
typedef const UINT8 (*tBTA_HD_ST_TBL)[BTA_HD_NUM_COLS];
/* state table */
const tBTA_HD_ST_TBL bta_hd_st_tbl[] =
{
bta_hd_st_listen,
bta_hd_st_open
};
/*****************************************************************************
** Global data
*****************************************************************************/
/* HD control block */
#if BTA_DYNAMIC_MEMORY == FALSE
tBTA_HD_CB bta_hd_cb;
#endif
/*******************************************************************************
**
** Function bta_hd_api_enable
**
** Description Handle an API enable event.
**
**
** Returns void
**
*******************************************************************************/
static void bta_hd_api_enable(tBTA_HD_DATA *p_data)
{
tHID_DEV_SDP_INFO sdp_info;
tHID_DEV_REG_INFO reg_info;
tBTA_SEC sec_mask = p_data->api_enable.sec_mask;
tBTA_HD_STATUS status = BTA_HD_FAIL;
/* initialize control block */
memset(&bta_hd_cb, 0, sizeof(tBTA_HD_CB));
GKI_init_q (&bta_hd_cb.out_q);
/* store parameters */
bta_hd_cb.p_cback = p_data->api_enable.p_cback;
/* register HID Device to HIDD */
reg_info.app_cback = bta_hd_hidd_cback;
bdcpy(reg_info.host_addr, p_data->api_enable.bd_addr);
if(p_bta_hd_cfg->use_qos)
reg_info.qos_info = &p_bta_hd_cfg->qos;
else
reg_info.qos_info = NULL;
if(HID_DevRegister(®_info) == HID_SUCCESS)
{
HID_DevSetSecurityLevel("BT HID Combo Mouse/Keyboard", sec_mask);
/* register HID Device to SDP */
memcpy(&sdp_info, &p_bta_hd_cfg->sdp_info, sizeof(tHID_DEV_SDP_INFO));
if(p_data->api_enable.service_name[0])
{
BCM_STRNCPY_S(sdp_info.svc_name, sizeof(sdp_info.svc_name), p_data->api_enable.service_name,
// btla-specific ++
sizeof(sdp_info.svc_name));
// btla-specific --
}
bta_hd_cb.sdp_handle = HID_DevSetSDPRecord(&sdp_info);
}
if(bta_hd_cb.sdp_handle>0)
{
status = BTA_HD_SUCCESS;
bta_hd_cb.state = BTA_HD_LISTEN_ST;
bta_sys_add_uuid(UUID_SERVCLASS_HUMAN_INTERFACE);
}
/* call callback with enable event */
(*bta_hd_cb.p_cback)(BTA_HD_ENABLE_EVT, (tBTA_HD *)&status);
}
/*******************************************************************************
**
** Function bta_hd_sm_execute
**
** Description State machine event handling function for HD
**
**
** Returns void
**
*******************************************************************************/
void bta_hd_sm_execute(tBTA_HD_CB *p_cb, UINT16 event, tBTA_HD_DATA *p_data)
{
tBTA_HD_ST_TBL state_table;
UINT8 action;
if(p_cb->state == BTA_HD_IDLE_ST)
{
APPL_TRACE_EVENT1("HD event=0x%x received in IDLE", event);
return;
}
/* look up the state table for the current state */
state_table = bta_hd_st_tbl[p_cb->state-1];
event &= 0x00FF;
APPL_TRACE_EVENT3("HD event=0x%x state=%d, next: %d",
event, p_cb->state, state_table[event][BTA_HD_NEXT_STATE]);
/* set next state */
p_cb->state = state_table[event][BTA_HD_NEXT_STATE];
action = state_table[event][BTA_HD_ACTION];
/* execute action functions */
if (action != BTA_HD_IGNORE)
{
(*bta_hd_action[action])(p_cb, p_data);
}
}
/*******************************************************************************
**
** Function bta_hd_hdl_event
**
** Description HID Device main event handling function.
**
**
** Returns BOOLEAN
**
*******************************************************************************/
BOOLEAN bta_hd_hdl_event(BT_HDR *p_msg)
{
switch (p_msg->event)
{
/* handle enable event */
case BTA_HD_API_ENABLE_EVT:
bta_hd_api_enable((tBTA_HD_DATA *) p_msg);
break;
/* all others run through state machine */
default:
bta_hd_sm_execute(&bta_hd_cb, p_msg->event, (tBTA_HD_DATA *) p_msg);
break;
}
return TRUE;
}
|
