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__ "hsp_hs_demo.c"
39
40 /*
41 * hsp_hs_demo.c
42 */
43
44 // *****************************************************************************
45 /* EXAMPLE_START(hsp_hs_demo): HSP HS - Headset
46 *
47 * @text This example implements a HSP Headset device that sends and receives
48 * audio signal over HCI SCO. It demonstrates how to receive
49 * an output from a remote audio gateway (AG), and,
50 * if HAVE_BTSTACK_STDIN is defined, how to control the AG.
51 */
52 // *****************************************************************************
53
54 #include "btstack_config.h"
55
56 #include <stdint.h>
57 #include <stdio.h>
58 #include <stdlib.h>
59 #include <string.h>
60
61 #include "btstack.h"
62 #include "sco_demo_util.h"
63 #ifdef HAVE_BTSTACK_STDIN
64 #include "btstack_stdin.h"
65 #endif
66
67 static btstack_packet_callback_registration_t hci_event_callback_registration;
68
69 static uint8_t hsp_service_buffer[150];
70 static const uint8_t rfcomm_channel_nr = 1;
71 static const char hsp_hs_service_name[] = "Headset Test";
72 static hci_con_handle_t sco_handle = HCI_CON_HANDLE_INVALID;
73
74 static char hs_cmd_buffer[100];
75 // mac 2013:
76 static const char * device_addr_string = "84:38:35:65:d1:15";
77 static bd_addr_t device_addr;
78
79 /* @section Audio Transfer Setup
80 *
81 * @text A pre-computed sine wave (160Hz) is used as the input audio signal. 160 Hz.
82 * To send and receive an audio signal, ENABLE_SCO_OVER_HCI has to be defined.
83 *
84 * Tested working setups:
85 * - Ubuntu 14 64-bit, CC2564B connected via FTDI USB-2-UART adapter, 921600 baud
86 * - Ubuntu 14 64-bit, CSR USB dongle
87 * - OS X 10.11, CSR USB dongle
88 *
89 * Broken setups:
90 * - OS X 10.11, CC2564B connected via FDTI USB-2-UART adapter, 921600 baud
91 * - select(..) blocks > 400 ms -> num completed is received to late -> gaps between audio
92 * - looks like bug in select->FTDI driver as it works correct on Linux
93 *
94 * SCO not routed over HCI yet:
95 * - CSR UART dongle
96 * - Broadcom USB dongle
97 * - Broadcom UART chipset
98 * - ..
99 *
100 */
101
102
show_usage(void)103 static void show_usage(void){
104 bd_addr_t iut_address;
105 gap_local_bd_addr(iut_address);
106
107 printf("\n--- Bluetooth HSP Headset Test Console %s ---\n", bd_addr_to_str(iut_address));
108 printf("---\n");
109 printf("c - Connect to %s\n", bd_addr_to_str(device_addr));
110 printf("C - Disconnect\n");
111 printf("a - establish audio connection\n");
112 printf("A - release audio connection\n");
113 printf("b - press user button\n");
114 printf("z - set microphone gain 0\n");
115 printf("m - set microphone gain 8\n");
116 printf("M - set microphone gain 15\n");
117 printf("o - set speaker gain 0\n");
118 printf("s - set speaker gain 8\n");
119 printf("S - set speaker gain 15\n");
120 printf("\n");
121 }
122
123 #ifdef HAVE_BTSTACK_STDIN
stdin_process(char c)124 static void stdin_process(char c){
125 switch (c){
126 case 'c':
127 printf("Connect to %s\n", bd_addr_to_str(device_addr));
128 hsp_hs_connect(device_addr);
129 break;
130 case 'C':
131 printf("Disconnect.\n");
132 hsp_hs_disconnect();
133 break;
134 case 'a':
135 printf("Establish audio connection\n");
136 hsp_hs_establish_audio_connection();
137 break;
138 case 'A':
139 printf("Release audio connection\n");
140 hsp_hs_release_audio_connection();
141 break;
142
143 case 'z':
144 printf("Setting microphone gain 0\n");
145 hsp_hs_set_microphone_gain(0);
146 break;
147 case 'm':
148 printf("Setting microphone gain 8\n");
149 hsp_hs_set_microphone_gain(8);
150 break;
151 case 'M':
152 printf("Setting microphone gain 15\n");
153 hsp_hs_set_microphone_gain(15);
154 break;
155 case 'o':
156 printf("Setting speaker gain 0\n");
157 hsp_hs_set_speaker_gain(0);
158 break;
159 case 's':
160 printf("Setting speaker gain 8\n");
161 hsp_hs_set_speaker_gain(8);
162 break;
163 case 'S':
164 printf("Setting speaker gain 15\n");
165 hsp_hs_set_speaker_gain(15);
166 break;
167 case 'b':
168 printf("Press user button\n");
169 hsp_hs_send_button_press();
170 break;
171 default:
172 show_usage();
173 break;
174 }
175 }
176 #endif
177
packet_handler(uint8_t packet_type,uint16_t channel,uint8_t * event,uint16_t event_size)178 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){
179 UNUSED(channel);
180 uint8_t status;
181
182 switch (packet_type){
183 case HCI_SCO_DATA_PACKET:
184 // forward received SCO / audio packets to SCO component
185 if (READ_SCO_CONNECTION_HANDLE(event) != sco_handle) break;
186 sco_demo_receive(event, event_size);
187 break;
188 case HCI_EVENT_PACKET:
189 switch (hci_event_packet_get_type(event)) {
190 case BTSTACK_EVENT_STATE:
191 if (btstack_event_state_get_state(event) != HCI_STATE_WORKING) break;
192 show_usage();
193 break;
194 case HCI_EVENT_SCO_CAN_SEND_NOW:
195 sco_demo_send(sco_handle);
196 break;
197 case HCI_EVENT_HSP_META:
198 switch (hci_event_hsp_meta_get_subevent_code(event)) {
199 case HSP_SUBEVENT_RFCOMM_CONNECTION_COMPLETE:
200 status = hsp_subevent_rfcomm_connection_complete_get_status(event);
201 if (status != ERROR_CODE_SUCCESS){
202 printf("RFCOMM connection establishment failed, status 0x%02x\n", status);
203 } else {
204 printf("RFCOMM connection established.\n");
205 }
206 break;
207 case HSP_SUBEVENT_RFCOMM_DISCONNECTION_COMPLETE:
208 printf("RFCOMM disconnected.\n");
209 break;
210 case HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE:
211 status = hsp_subevent_audio_connection_complete_get_status(event);
212 if (status != ERROR_CODE_SUCCESS){
213 printf("Audio connection establishment failed, status 0x%02x\n", status);
214 } else {
215 sco_handle = hsp_subevent_audio_connection_complete_get_sco_handle(event);
216 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle);
217 hci_request_sco_can_send_now_event();
218 }
219 break;
220 case HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE:
221 printf("Audio connection released.\n\n");
222 sco_handle = HCI_CON_HANDLE_INVALID;
223 break;
224 case HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED:
225 printf("Received microphone gain change %d\n", hsp_subevent_microphone_gain_changed_get_gain(event));
226 break;
227 case HSP_SUBEVENT_SPEAKER_GAIN_CHANGED:
228 printf("Received speaker gain change %d\n", hsp_subevent_speaker_gain_changed_get_gain(event));
229 break;
230 case HSP_SUBEVENT_RING:
231 printf("HS: RING RING!\n");
232 break;
233 case HSP_SUBEVENT_AG_INDICATION: {
234 memset(hs_cmd_buffer, 0, sizeof(hs_cmd_buffer));
235 unsigned int size = hsp_subevent_ag_indication_get_value_length(event);
236 if (size >= sizeof(hs_cmd_buffer)-1){
237 size = sizeof(hs_cmd_buffer)-1;
238 }
239 memcpy(hs_cmd_buffer, hsp_subevent_ag_indication_get_value(event), size);
240 printf("Received custom indication: \"%s\". \nExit code or call hsp_hs_send_result.\n", hs_cmd_buffer);
241 break;
242 }
243 default:
244 printf("event not handled 0x%02x\n", hci_event_hsp_meta_get_subevent_code(event));
245 break;
246 }
247 break;
248 default:
249 break;
250 }
251 default:
252 break;
253 }
254 }
255
256 /* @section Main Application Setup
257 *
258 * @text Listing MainConfiguration shows main application code.
259 * To run a HSP Headset service you need to initialize the SDP, and to create and register HSP HS record with it.
260 * In this example, the SCO over HCI is used to receive and send an audio signal.
261 *
262 * Two packet handlers are registered:
263 * - The HCI SCO packet handler receives audio data.
264 * - The HSP HS packet handler is used to trigger sending of audio data and commands to the AG. It also receives the AG's answers.
265 *
266 * The stdin_process callback allows for sending commands to the AG.
267 * At the end the Bluetooth stack is started.
268 */
269
270 /* LISTING_START(MainConfiguration): Setup HSP Headset */
271 int btstack_main(int argc, const char * argv[]);
btstack_main(int argc,const char * argv[])272 int btstack_main(int argc, const char * argv[]){
273 (void)argc;
274 (void)argv;
275
276 sco_demo_init();
277 sco_demo_set_codec(HFP_CODEC_CVSD);
278
279 l2cap_init();
280
281 #ifdef ENABLE_BLE
282 // Initialize LE Security Manager. Needed for cross-transport key derivation
283 sm_init();
284 #endif
285
286 sdp_init();
287 memset(hsp_service_buffer, 0, sizeof(hsp_service_buffer));
288 hsp_hs_create_sdp_record(hsp_service_buffer, sdp_create_service_record_handle(), rfcomm_channel_nr, hsp_hs_service_name, 0);
289 btstack_assert(de_get_len( hsp_service_buffer) <= sizeof(hsp_service_buffer));
290 sdp_register_service(hsp_service_buffer);
291
292 rfcomm_init();
293
294 hsp_hs_init(rfcomm_channel_nr);
295
296 // register for HCI events and SCO packets
297 hci_event_callback_registration.callback = &packet_handler;
298 hci_add_event_handler(&hci_event_callback_registration);
299 hci_register_sco_packet_handler(&packet_handler);
300
301 // register for HSP events
302 hsp_hs_register_packet_handler(packet_handler);
303
304 #ifdef HAVE_BTSTACK_STDIN
305 btstack_stdin_setup(stdin_process);
306 #endif
307
308 gap_set_local_name("HSP HS Demo 00:00:00:00:00:00");
309 gap_discoverable_control(1);
310 gap_ssp_set_io_capability(SSP_IO_CAPABILITY_DISPLAY_YES_NO);
311 gap_set_class_of_device(0x240404);
312
313 // Parse human readable Bluetooth address.
314 sscanf_bd_addr(device_addr_string, device_addr);
315
316 // turn on!
317 hci_power_control(HCI_POWER_ON);
318 return 0;
319 }
320 /* LISTING_END */
321 /* EXAMPLE_END */
322