/
scan_after_connect.c
187 lines (165 loc) · 7.68 KB
/
scan_after_connect.c
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
/*
* Copyright (C) 2014 BlueKitchen GmbH
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* 4. Any redistribution, use, or modification is done solely for
* personal benefit and not for any commercial purpose or for
* monetary gain.
*
* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
* GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Please inquire about commercial licensing options at
* contact@bluekitchen-gmbh.com
*
*/
#define BTSTACK_FILE__ "scan_after_connect.c"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "btstack.h"
static hci_con_handle_t connection_handle;
static gatt_client_service_t services[40];
static int service_count = 0;
static int service_index = 0;
static btstack_packet_callback_registration_t hci_event_callback_registration;
static void handle_hci_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size);
static void printUUID(uint8_t * uuid128, uint16_t uuid16){
if (uuid16){
printf("%04x",uuid16);
} else {
printf("%s", uuid128_to_str(uuid128));
}
}
static void dump_characteristic(gatt_client_characteristic_t * characteristic){
printf(" * characteristic: [0x%04x-0x%04x-0x%04x], properties 0x%02x, uuid ",
characteristic->start_handle, characteristic->value_handle, characteristic->end_handle, characteristic->properties);
printUUID(characteristic->uuid128, characteristic->uuid16);
printf("\n");
}
static void dump_service(gatt_client_service_t * service){
printf(" * service: [0x%04x-0x%04x], uuid ", service->start_group_handle, service->end_group_handle);
printUUID(service->uuid128, service->uuid16);
printf("\n");
}
static void handle_hci_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(channel);
UNUSED(size);
if (packet_type != HCI_EVENT_PACKET) return;
uint8_t event = hci_event_packet_get_type(packet);
switch (event) {
case BTSTACK_EVENT_STATE:
// BTstack activated, get started
if (btstack_event_state_get_state(packet) != HCI_STATE_WORKING) break;
printf("BTstack activated, start scanning!\n");
gap_set_scan_parameters(0,480, 48);
gap_start_scan();
break;
case GAP_EVENT_ADVERTISING_REPORT:
if (ad_data_contains_uuid16(gap_event_advertising_report_get_data_length(packet), gap_event_advertising_report_get_data(packet), 0xff10)){
// stop scanning, and connect to the device
bd_addr_t addr;
gap_event_advertising_report_get_address(packet, addr);
printf("GATT Counter found with %s, try to connect\n", bd_addr_to_str(addr));
gap_stop_scan();
gap_connect(addr, gap_event_advertising_report_get_address_type(packet));
}
break;
case GAP_EVENT_EXTENDED_ADVERTISING_REPORT:
if (ad_data_contains_uuid16(gap_event_extended_advertising_report_get_data_length(packet), gap_event_extended_advertising_report_get_data(packet), 0xff10)){
// stop scanning, and connect to the device
bd_addr_t addr;
gap_event_extended_advertising_report_get_address(packet, addr);
printf("GATT Counter found with %s, try to connect\n", bd_addr_to_str(addr));
gap_stop_scan();
gap_connect(addr, gap_event_extended_advertising_report_get_address_type(packet));
}
break;
case HCI_EVENT_META_GAP:
// wait for connection complete
if (hci_event_gap_meta_get_subevent_code(packet) != GAP_SUBEVENT_LE_CONNECTION_COMPLETE) break;
printf("\nGATT browser - CONNECTED\n");
connection_handle = gap_subevent_le_connection_complete_get_connection_handle(packet);
// query primary services
gatt_client_discover_primary_services(handle_gatt_client_event, connection_handle);
break;
case HCI_EVENT_DISCONNECTION_COMPLETE:
printf("\nGATT browser - DISCONNECTED\n");
break;
default:
break;
}
}
static void handle_gatt_client_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
UNUSED(packet_type);
UNUSED(channel);
UNUSED(size);
gatt_client_service_t service;
gatt_client_characteristic_t characteristic;
switch(hci_event_packet_get_type(packet)){
case GATT_EVENT_SERVICE_QUERY_RESULT:
gatt_event_service_query_result_get_service(packet, &service);
dump_service(&service);
services[service_count++] = service;
break;
case GATT_EVENT_CHARACTERISTIC_QUERY_RESULT:
gatt_event_characteristic_query_result_get_characteristic(packet, &characteristic);
dump_characteristic(&characteristic);
break;
case GATT_EVENT_QUERY_COMPLETE:
// GATT_EVENT_QUERY_COMPLETE of search characteristics
if (service_index < service_count) {
service = services[service_index++];
printf("\nGATT browser - CHARACTERISTIC for SERVICE %s, [0x%04x-0x%04x]\n",
uuid128_to_str(service.uuid128), service.start_group_handle, service.end_group_handle);
gatt_client_discover_characteristics_for_service(handle_gatt_client_event, connection_handle, &service);
break;
}
service_index = 0;
// query complete, connect to next device
printf("Query complete, connect to next device\n");
gap_start_scan();
break;
default:
break;
}
}
int btstack_main(int argc, const char * argv[]);
int btstack_main(int argc, const char * argv[]){
// Initialize L2CAP and register HCI event handler
l2cap_init();
// Setup security manager (needed for random address)
sm_init();
// Initialize GATT client
gatt_client_init();
// use random address
gap_random_address_set_mode(GAP_RANDOM_ADDRESS_NON_RESOLVABLE);
// register for HCI events
hci_event_callback_registration.callback = &handle_hci_event;
hci_add_event_handler(&hci_event_callback_registration);
// turn on!
hci_power_control(HCI_POWER_ON);
return 0;
}