1 /*
2 * Copyright (C) 2014 BlueKitchen GmbH
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the copyright holders nor the names of
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 * 4. Any redistribution, use, or modification is done solely for
17 * personal benefit and not for any commercial purpose or for
18 * monetary gain.
19 *
20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN
24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * Please inquire about commercial licensing options at
34 * [email protected]
35 *
36 */
37
38 #define BTSTACK_FILE__ "nordic_spp_le_counter.c"
39
40 // *****************************************************************************
41 /* EXAMPLE_START(nordic_ssp_le_counter): LE Nordic SPP-like Heartbeat Server
42 *
43 */
44 // *****************************************************************************
45
46 #include <stdint.h>
47 #include <stdio.h>
48 #include <stdlib.h>
49 #include <string.h>
50
51 #include "btstack.h"
52 #include "ble/gatt-service/nordic_spp_service_server.h"
53
54 // nordic_spp_le_counter.gatt contains the declaration of the provided GATT Services + Characteristics
55 // nordic_spp_le_counter.h contains the binary representation of nordic_spp_le_counter.gatt
56 // it is generated by the build system by calling: $BTSTACK_ROOT/tool/compile_gatt.py nordic_spp_le_counter.gatt nordic_spp_le_counter.h
57 // it needs to be regenerated when the GATT Database declared in nordic_spp_le_counter.gatt file is modified
58 #include "nordic_spp_le_counter.h"
59
60
61 #define HEARTBEAT_PERIOD_MS 1000
62
63 /* @section Main Application Setup
64 *
65 * @text Listing MainConfiguration shows main application code.
66 * It initializes L2CAP, the Security Manager and configures the ATT Server with the pre-compiled
67 * ATT Database generated from $nordic_ssp_le_counter.gatt$.
68 * Additionally, it enables the Battery Service Server with the current battery level.
69 * Finally, it configures the advertisements
70 * and the heartbeat handler and boots the Bluetooth stack.
71 * In this example, the Advertisement contains the Flags attribute and the device name.
72 * The flag 0x06 indicates: LE General Discoverable Mode and BR/EDR not supported.
73 */
74
75 /* LISTING_START(MainConfiguration): Init L2CAP SM ATT Server and start heartbeat timer */
76 static btstack_timer_source_t heartbeat;
77 static hci_con_handle_t con_handle = HCI_CON_HANDLE_INVALID;
78 static btstack_context_callback_registration_t send_request;
79
80 const uint8_t adv_data[] = {
81 // Flags general discoverable, BR/EDR not supported
82 2, BLUETOOTH_DATA_TYPE_FLAGS, 0x06,
83 // Name
84 8, BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME, 'n', 'R', 'F',' ', 'S', 'P', 'P',
85 // UUID ...
86 17, BLUETOOTH_DATA_TYPE_COMPLETE_LIST_OF_128_BIT_SERVICE_CLASS_UUIDS, 0x9e, 0xca, 0xdc, 0x24, 0xe, 0xe5, 0xa9, 0xe0, 0x93, 0xf3, 0xa3, 0xb5, 0x1, 0x0, 0x40, 0x6e,
87 };
88 const uint8_t adv_data_len = sizeof(adv_data);
89
90 /* LISTING_END */
91
92 /*
93 * @section Heartbeat Handler
94 *
95 * @text The heartbeat handler updates the value of the single Characteristic provided in this example,
96 * and request a ATT_EVENT_CAN_SEND_NOW to send a notification if enabled see Listing heartbeat.
97 */
98
99 /* LISTING_START(heartbeat): Hearbeat Handler */
100 static int counter = 0;
101 static char counter_string[30];
102 static int counter_string_len;
103
beat(void)104 static void beat(void){
105 counter++;
106 counter_string_len = snprintf(counter_string, sizeof(counter_string), "BTstack counter %03u", counter);
107 }
108
nordic_can_send(void * context)109 static void nordic_can_send(void * context){
110 UNUSED(context);
111 printf("SEND: %s\n", counter_string);
112 nordic_spp_service_server_send(con_handle, (uint8_t*) counter_string, counter_string_len);
113 }
114
heartbeat_handler(struct btstack_timer_source * ts)115 static void heartbeat_handler(struct btstack_timer_source *ts){
116 if (con_handle != HCI_CON_HANDLE_INVALID) {
117 beat();
118 send_request.callback = &nordic_can_send;
119 nordic_spp_service_server_request_can_send_now(&send_request, con_handle);
120 }
121 btstack_run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS);
122 btstack_run_loop_add_timer(ts);
123 }
124 /* LISTING_END */
125
nordic_spp_packet_handler(uint8_t packet_type,uint16_t channel,uint8_t * packet,uint16_t size)126 static void nordic_spp_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
127 UNUSED(channel);
128 switch (packet_type){
129 case HCI_EVENT_PACKET:
130 if (hci_event_packet_get_type(packet) != HCI_EVENT_GATTSERVICE_META) break;
131 switch (hci_event_gattservice_meta_get_subevent_code(packet)){
132 case GATTSERVICE_SUBEVENT_SPP_SERVICE_CONNECTED:
133 con_handle = gattservice_subevent_spp_service_connected_get_con_handle(packet);
134 printf("Nordic SPP connected, con handle 0x%04x\n", con_handle);
135 break;
136 case GATTSERVICE_SUBEVENT_SPP_SERVICE_DISCONNECTED:
137 printf("Nordic SPP disconnected, con handle 0x%04x\n", con_handle);
138 con_handle = HCI_CON_HANDLE_INVALID;
139 break;
140 default:
141 break;
142 }
143 break;
144 case RFCOMM_DATA_PACKET:
145 printf("RECV: ");
146 printf_hexdump(packet, size);
147 break;
148 default:
149 break;
150 }
151 }
152
153 int btstack_main(void);
btstack_main(void)154 int btstack_main(void)
155 {
156 l2cap_init();
157
158 // setup SM: Display only
159 sm_init();
160
161 // setup ATT server
162 att_server_init(profile_data, NULL, NULL);
163
164 // setup Nordic SPP service
165 nordic_spp_service_server_init(&nordic_spp_packet_handler);
166
167 // setup advertisements
168 uint16_t adv_int_min = 0x0030;
169 uint16_t adv_int_max = 0x0030;
170 uint8_t adv_type = 0;
171 bd_addr_t null_addr;
172 memset(null_addr, 0, 6);
173 gap_advertisements_set_params(adv_int_min, adv_int_max, adv_type, 0, null_addr, 0x07, 0x00);
174 gap_advertisements_set_data(adv_data_len, (uint8_t*) adv_data);
175 gap_advertisements_enable(1);
176
177 // set one-shot timer
178 heartbeat.process = &heartbeat_handler;
179 btstack_run_loop_set_timer(&heartbeat, HEARTBEAT_PERIOD_MS);
180 btstack_run_loop_add_timer(&heartbeat);
181
182 // beat once
183 beat();
184
185 // turn on!
186 hci_power_control(HCI_POWER_ON);
187
188 return 0;
189 }
190 /* EXAMPLE_END */
191