xref: /btstack/example/hfp_hf_demo.c (revision 6b67407d5d44ab7cd16ae875ba9c037c87ab8693)
1 
2 /*
3  * Copyright (C) 2014 BlueKitchen GmbH
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 3. Neither the name of the copyright holders nor the names of
15  *    contributors may be used to endorse or promote products derived
16  *    from this software without specific prior written permission.
17  * 4. Any redistribution, use, or modification is done solely for
18  *    personal benefit and not for any commercial purpose or for
19  *    monetary gain.
20  *
21  * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS
22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
25  * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
28  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
31  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32  * SUCH DAMAGE.
33  *
34  * Please inquire about commercial licensing options at
35  * [email protected]
36  *
37  */
38 
39 #define BTSTACK_FILE__ "hfp_hf_demo.c"
40 
41 /*
42  * hfp_hs_demo.c
43  */
44 
45 // *****************************************************************************
46 /* EXAMPLE_START(hfp_hs_demo): HFP HF - Hands-Free
47  *
48  * @text This  HFP Hands-Free example demonstrates how to receive
49  * an output from a remote HFP audio gateway (AG), and,
50  * if HAVE_BTSTACK_STDIN is defined, how to control the HFP AG.
51  */
52 // *****************************************************************************
53 
54 
55 #include "btstack_config.h"
56 
57 #include <stdint.h>
58 #include <stdio.h>
59 #include <stdlib.h>
60 #include <string.h>
61 #include "btstack.h"
62 
63 #include "sco_demo_util.h"
64 
65 uint8_t hfp_service_buffer[150];
66 const uint8_t   rfcomm_channel_nr = 1;
67 const char hfp_hf_service_name[] = "HFP HF Demo";
68 
69 #ifdef HAVE_BTSTACK_STDIN
70 // static const char * device_addr_string = "6C:72:E7:10:22:EE";
71 static const char * device_addr_string = "00:1A:7D:DA:71:13";
72 #endif
73 
74 static bd_addr_t device_addr;
75 
76 #ifdef HAVE_BTSTACK_STDIN
77 // 80:BE:05:D5:28:48
78 // prototypes
79 static void show_usage(void);
80 #endif
81 static hci_con_handle_t acl_handle = HCI_CON_HANDLE_INVALID;
82 static hci_con_handle_t sco_handle = HCI_CON_HANDLE_INVALID;
83 #ifdef ENABLE_HFP_WIDE_BAND_SPEECH
84 static uint8_t codecs[] = {HFP_CODEC_CVSD, HFP_CODEC_MSBC};
85 #else
86 static uint8_t codecs[] = {HFP_CODEC_CVSD};
87 #endif
88 static uint16_t indicators[1] = {0x01};
89 static uint8_t  negotiated_codec = HFP_CODEC_CVSD;
90 static btstack_packet_callback_registration_t hci_event_callback_registration;
91 char cmd;
92 
93 static void dump_supported_codecs(void){
94     unsigned int i;
95     int mSBC_skipped = 0;
96     printf("Supported codecs: ");
97     for (i = 0; i < sizeof(codecs); i++){
98         switch(codecs[i]){
99             case HFP_CODEC_CVSD:
100                 printf("CVSD");
101                 break;
102             case HFP_CODEC_MSBC:
103                 if (hci_extended_sco_link_supported()){
104                     printf(", mSBC");
105                 } else {
106                     mSBC_skipped = 1;
107                 }
108                 break;
109             default:
110                 btstack_assert(false);
111                 break;
112         }
113     }
114     printf("\n");
115     if (mSBC_skipped){
116         printf("mSBC codec disabled because eSCO not supported by local controller.\n");
117     }
118 }
119 
120 #ifdef HAVE_BTSTACK_STDIN
121 
122 // Testig User Interface
123 static void show_usage(void){
124     bd_addr_t iut_address;
125     gap_local_bd_addr(iut_address);
126 
127     printf("\n--- Bluetooth HFP Hands-Free (HF) unit Test Console %s ---\n", bd_addr_to_str(iut_address));
128     printf("\n");
129     printf("a - establish SLC to %s     | ", bd_addr_to_str(device_addr));
130     printf("A - release SLC connection to device\n");
131     printf("b - establish Audio connection             | B - release Audio connection\n");
132     printf("d - query network operator                 | D - Enable HFP AG registration status update via bitmap(IIA)\n");
133     printf("f - answer incoming call                   | F - Hangup call\n");
134     printf("g - query network operator name            | G - reject incoming call\n");
135     printf("i - dial 1234567                           | I - dial 7654321\n");
136     printf("j - dial #1                                | J - dial #99\n");
137     printf("o - Set speaker volume to 0  (minimum)     | O - Set speaker volume to 9  (default)\n");
138     printf("p - Set speaker volume to 12 (higher)      | P - Set speaker volume to 15 (maximum)\n");
139     printf("q - Set microphone gain to 0  (minimum)    | Q - Set microphone gain to 9  (default)\n");
140     printf("s - Set microphone gain to 12 (higher)     | S - Set microphone gain to 15 (maximum)\n");
141     printf("t - terminate connection\n");
142     printf("u - send 'user busy' (TWC 0)\n");
143     printf("U - end active call and accept other call' (TWC 1)\n");
144     printf("v - Swap active call call (TWC 2)          | V - Join held call (TWC 3)\n");
145     printf("w - Connect calls (TWC 4)                  | W - redial\n");
146     printf("c/C - disable/enable registration status update for all AG indicators\n");
147     printf("e/E - disable/enable reporting of the extended AG error result code\n");
148     printf("k/K - deactivate/activate call waiting notification\n");
149     printf("l/L - deactivate/activate calling line notification\n");
150     printf("m/M - deactivate/activate echo canceling and noise reduction\n");
151     printf("n/N - deactivate/activate voice recognition\n");
152     printf("z/Z - deactivate/activate enhanced voice recognition\n");
153     printf("0123456789#*-+ - send DTMF dial tones\n");
154     printf("x - request phone number for voice tag     | X - current call status (ECS)\n");
155     printf("y - release call with index 2 (ECC)        | Y - private consultation with call 2(ECC)\n");
156     printf("[ - Query Response and Hold status (RHH ?) | ] - Place call in a response and held state(RHH 0)\n");
157     printf("{ - Accept held call(RHH 1)                | } - Reject held call(RHH 2)\n");
158     printf("? - Query Subscriber Number (NUM)\n");
159     printf("! - Update HF indicator with assigned number 1 (HFI)\n");
160     printf("\n");
161 }
162 
163 static void stdin_process(char c){
164     uint8_t status = ERROR_CODE_SUCCESS;
165 
166     cmd = c;    // used in packet handler
167 
168     if (cmd >= '0' && cmd <= '9'){
169         printf("DTMF Code: %c\n", cmd);
170         status = hfp_hf_send_dtmf_code(acl_handle, cmd);
171         return;
172     }
173 
174     switch (cmd){
175         case '#':
176         case '-':
177         case '+':
178         case '*':
179             log_info("USER:\'%c\'", cmd);
180             printf("DTMF Code: %c\n", cmd);
181             status = hfp_hf_send_dtmf_code(acl_handle, cmd);
182             break;
183         case 'a':
184             log_info("USER:\'%c\'", cmd);
185             printf("Establish Service level connection to device with Bluetooth address %s...\n", bd_addr_to_str(device_addr));
186             status = hfp_hf_establish_service_level_connection(device_addr);
187             break;
188         case 'A':
189             log_info("USER:\'%c\'", cmd);
190             printf("Release Service level connection.\n");
191             status = hfp_hf_release_service_level_connection(acl_handle);
192             break;
193         case 'b':
194             log_info("USER:\'%c\'", cmd);
195             printf("Establish Audio connection to device with Bluetooth address %s...\n", bd_addr_to_str(device_addr));
196             status = hfp_hf_establish_audio_connection(acl_handle);
197             break;
198         case 'B':
199             log_info("USER:\'%c\'", cmd);
200             printf("Release Audio service level connection.\n");
201             status = hfp_hf_release_audio_connection(acl_handle);
202             break;
203         case 'C':
204             log_info("USER:\'%c\'", cmd);
205             printf("Enable registration status update for all AG indicators.\n");
206             status = hfp_hf_enable_status_update_for_all_ag_indicators(acl_handle);
207             break;
208         case 'c':
209             log_info("USER:\'%c\'", cmd);
210             printf("Disable registration status update for all AG indicators.\n");
211             status = hfp_hf_disable_status_update_for_all_ag_indicators(acl_handle);
212             break;
213         case 'D':
214             log_info("USER:\'%c\'", cmd);
215             printf("Set HFP AG registration status update for individual indicators (0111111).\n");
216             status = hfp_hf_set_status_update_for_individual_ag_indicators(acl_handle, 63);
217             break;
218         case 'd':
219             log_info("USER:\'%c\'", cmd);
220             printf("Query network operator.\n");
221             status = hfp_hf_query_operator_selection(acl_handle);
222             break;
223         case 'E':
224             log_info("USER:\'%c\'", cmd);
225             printf("Enable reporting of the extended AG error result code.\n");
226             status = hfp_hf_enable_report_extended_audio_gateway_error_result_code(acl_handle);
227             break;
228         case 'e':
229             log_info("USER:\'%c\'", cmd);
230             printf("Disable reporting of the extended AG error result code.\n");
231             status = hfp_hf_disable_report_extended_audio_gateway_error_result_code(acl_handle);
232             break;
233         case 'f':
234             log_info("USER:\'%c\'", cmd);
235             printf("Answer incoming call.\n");
236             status = hfp_hf_answer_incoming_call(acl_handle);
237             break;
238         case 'F':
239             log_info("USER:\'%c\'", cmd);
240             printf("Hangup call.\n");
241             status = hfp_hf_terminate_call(acl_handle);
242             break;
243         case 'G':
244             log_info("USER:\'%c\'", cmd);
245             printf("Reject incoming call.\n");
246             status = hfp_hf_reject_incoming_call(acl_handle);
247             break;
248         case 'g':
249             log_info("USER:\'%c\'", cmd);
250             printf("Query operator.\n");
251             status = hfp_hf_query_operator_selection(acl_handle);
252             break;
253         case 't':
254             log_info("USER:\'%c\'", cmd);
255             printf("Terminate HCI connection.\n");
256             gap_disconnect(acl_handle);
257             break;
258         case 'i':
259             log_info("USER:\'%c\'", cmd);
260             printf("Dial 1234567\n");
261             status = hfp_hf_dial_number(acl_handle, "1234567");
262             break;
263         case 'I':
264             log_info("USER:\'%c\'", cmd);
265             printf("Dial 7654321\n");
266             status = hfp_hf_dial_number(acl_handle, "7654321");
267             break;
268         case 'j':
269             log_info("USER:\'%c\'", cmd);
270             printf("Dial #1\n");
271             status = hfp_hf_dial_memory(acl_handle,1);
272             break;
273         case 'J':
274             log_info("USER:\'%c\'", cmd);
275             printf("Dial #99\n");
276             status = hfp_hf_dial_memory(acl_handle,99);
277             break;
278         case 'k':
279             log_info("USER:\'%c\'", cmd);
280             printf("Deactivate call waiting notification\n");
281             status = hfp_hf_deactivate_call_waiting_notification(acl_handle);
282             break;
283         case 'K':
284             log_info("USER:\'%c\'", cmd);
285             printf("Activate call waiting notification\n");
286             status = hfp_hf_activate_call_waiting_notification(acl_handle);
287             break;
288         case 'l':
289             log_info("USER:\'%c\'", cmd);
290             printf("Deactivate calling line notification\n");
291             status = hfp_hf_deactivate_calling_line_notification(acl_handle);
292             break;
293         case 'L':
294             log_info("USER:\'%c\'", cmd);
295             printf("Activate calling line notification\n");
296             status = hfp_hf_activate_calling_line_notification(acl_handle);
297             break;
298         case 'm':
299             log_info("USER:\'%c\'", cmd);
300             printf("Deactivate echo canceling and noise reduction\n");
301             status = hfp_hf_deactivate_echo_canceling_and_noise_reduction(acl_handle);
302             break;
303         case 'M':
304             log_info("USER:\'%c\'", cmd);
305             printf("Activate echo canceling and noise reduction\n");
306             status = hfp_hf_activate_echo_canceling_and_noise_reduction(acl_handle);
307             break;
308         case 'n':
309             log_info("USER:\'%c\'", cmd);
310             printf("Deactivate voice recognition\n");
311             status = hfp_hf_deactivate_voice_recognition(acl_handle);
312             break;
313         case 'N':
314             log_info("USER:\'%c\'", cmd);
315             printf("Activate voice recognition %s\n", bd_addr_to_str(device_addr));
316             status = hfp_hf_activate_voice_recognition(acl_handle);
317             break;
318         case 'z':
319             log_info("USER:\'%c\'", cmd);
320             printf("Deactivate enhanced voice recognition\n");
321             status = hfp_hf_deactivate_enhanced_voice_recognition(acl_handle);
322             break;
323         case 'Z':
324             log_info("USER:\'%c\'", cmd);
325             printf("Activate enhanced voice recognition %s\n", bd_addr_to_str(device_addr));
326             status = hfp_hf_activate_enhanced_voice_recognition(acl_handle);
327             break;
328         case 'o':
329             log_info("USER:\'%c\'", cmd);
330             printf("Set speaker gain to 0 (minimum)\n");
331             status = hfp_hf_set_speaker_gain(acl_handle, 0);
332             break;
333         case 'O':
334             log_info("USER:\'%c\'", cmd);
335             printf("Set speaker gain to 9 (default)\n");
336             status = hfp_hf_set_speaker_gain(acl_handle, 9);
337             break;
338         case 'p':
339             log_info("USER:\'%c\'", cmd);
340             printf("Set speaker gain to 12 (higher)\n");
341             status = hfp_hf_set_speaker_gain(acl_handle, 12);
342             break;
343         case 'P':
344             log_info("USER:\'%c\'", cmd);
345             printf("Set speaker gain to 15 (maximum)\n");
346             status = hfp_hf_set_speaker_gain(acl_handle, 15);
347             break;
348         case 'q':
349             log_info("USER:\'%c\'", cmd);
350             printf("Set microphone gain to 0\n");
351             status = hfp_hf_set_microphone_gain(acl_handle, 0);
352             break;
353         case 'Q':
354             log_info("USER:\'%c\'", cmd);
355             printf("Set microphone gain to 9\n");
356             status = hfp_hf_set_microphone_gain(acl_handle, 9);
357             break;
358         case 's':
359             log_info("USER:\'%c\'", cmd);
360             printf("Set microphone gain to 12\n");
361             status = hfp_hf_set_microphone_gain(acl_handle, 12);
362             break;
363         case 'S':
364             log_info("USER:\'%c\'", cmd);
365             printf("Set microphone gain to 15\n");
366             status = hfp_hf_set_microphone_gain(acl_handle, 15);
367             break;
368         case 'u':
369             log_info("USER:\'%c\'", cmd);
370             printf("Send 'user busy' (Three-Way Call 0)\n");
371             status = hfp_hf_user_busy(acl_handle);
372             break;
373         case 'U':
374             log_info("USER:\'%c\'", cmd);
375             printf("End active call and accept waiting/held call (Three-Way Call 1)\n");
376             status = hfp_hf_end_active_and_accept_other(acl_handle);
377             break;
378         case 'v':
379             log_info("USER:\'%c\'", cmd);
380             printf("Swap active call and hold/waiting call (Three-Way Call 2)\n");
381             status = hfp_hf_swap_calls(acl_handle);
382             break;
383         case 'V':
384             log_info("USER:\'%c\'", cmd);
385             printf("Join hold call (Three-Way Call 3)\n");
386             status = hfp_hf_join_held_call(acl_handle);
387             break;
388         case 'w':
389             log_info("USER:\'%c\'", cmd);
390             printf("Connect calls (Three-Way Call 4)\n");
391             status = hfp_hf_connect_calls(acl_handle);
392             break;
393         case 'W':
394             log_info("USER:\'%c\'", cmd);
395             printf("Redial\n");
396             status = hfp_hf_redial_last_number(acl_handle);
397             break;
398         case 'x':
399             log_info("USER:\'%c\'", cmd);
400             printf("Request phone number for voice tag\n");
401             status = hfp_hf_request_phone_number_for_voice_tag(acl_handle);
402             break;
403         case 'X':
404             log_info("USER:\'%c\'", cmd);
405             printf("Query current call status\n");
406             status = hfp_hf_query_current_call_status(acl_handle);
407             break;
408         case 'y':
409             log_info("USER:\'%c\'", cmd);
410             printf("Release call with index 2\n");
411             status = hfp_hf_release_call_with_index(acl_handle, 2);
412             break;
413         case 'Y':
414             log_info("USER:\'%c\'", cmd);
415             printf("Private consultation with call 2\n");
416             status = hfp_hf_private_consultation_with_call(acl_handle, 2);
417             break;
418         case '[':
419             log_info("USER:\'%c\'", cmd);
420             printf("Query Response and Hold status (RHH ?)\n");
421             status = hfp_hf_rrh_query_status(acl_handle);
422             break;
423         case ']':
424             log_info("USER:\'%c\'", cmd);
425             printf("Place call in a response and held state (RHH 0)\n");
426             status = hfp_hf_rrh_hold_call(acl_handle);
427            break;
428         case '{':
429             log_info("USER:\'%c\'", cmd);
430             printf("Accept held call (RHH 1)\n");
431             status = hfp_hf_rrh_accept_held_call(acl_handle);
432             break;
433         case '}':
434             log_info("USER:\'%c\'", cmd);
435             printf("Reject held call (RHH 2)\n");
436             status = hfp_hf_rrh_reject_held_call(acl_handle);
437             break;
438         case '?':
439             log_info("USER:\'%c\'", cmd);
440             printf("Query Subscriber Number\n");
441             status = hfp_hf_query_subscriber_number(acl_handle);
442             break;
443         case '!':
444             log_info("USER:\'%c\'", cmd);
445             printf("Update HF indicator with assigned number 1 (HFI)\n");
446             status = hfp_hf_set_hf_indicator(acl_handle, 1, 1);
447             break;
448         default:
449             show_usage();
450             break;
451     }
452 
453     if (status != ERROR_CODE_SUCCESS){
454         printf("Could not perform command, status 0x%02x\n", status);
455     }
456 }
457 #endif
458 
459 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){
460     UNUSED(channel);
461     uint8_t status;
462 
463     switch (packet_type){
464 
465         case HCI_SCO_DATA_PACKET:
466             if (READ_SCO_CONNECTION_HANDLE(event) != sco_handle) break;
467             sco_demo_receive(event, event_size);
468             break;
469 
470         case HCI_EVENT_PACKET:
471             switch (hci_event_packet_get_type(event)){
472                 case HCI_EVENT_SCO_CAN_SEND_NOW:
473                     sco_demo_send(sco_handle);
474                     break;
475 
476                 case HCI_EVENT_COMMAND_COMPLETE:
477                     if (HCI_EVENT_IS_COMMAND_COMPLETE(event, hci_read_local_supported_features)){
478                         dump_supported_codecs();
479                     }
480                     break;
481 
482                 case HCI_EVENT_HFP_META:
483                     switch (hci_event_hfp_meta_get_subevent_code(event)) {
484                         case HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED:
485                             acl_handle = hfp_subevent_service_level_connection_established_get_acl_handle(event);
486                             hfp_subevent_service_level_connection_established_get_bd_addr(event, device_addr);
487                             printf("Service level connection established %s.\n\n", bd_addr_to_str(device_addr));
488                             break;
489                         case HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_RELEASED:
490                             acl_handle = HCI_CON_HANDLE_INVALID;
491                             printf("Service level connection released.\n\n");
492                             break;
493                         case HFP_SUBEVENT_AUDIO_CONNECTION_ESTABLISHED:
494                             status = hfp_subevent_audio_connection_established_get_status(event);
495                             if (status != ERROR_CODE_SUCCESS){
496                                 printf("Audio connection establishment failed with status 0x%02x\n", status);
497                             } else {
498                                 sco_handle = hfp_subevent_audio_connection_established_get_sco_handle(event);
499                                 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle);
500                                 negotiated_codec = hfp_subevent_audio_connection_established_get_negotiated_codec(event);
501                                 switch (negotiated_codec){
502                                     case 0x01:
503                                         printf("Using CVSD codec.\n");
504                                         break;
505                                     case 0x02:
506                                         printf("Using mSBC codec.\n");
507                                         break;
508                                     default:
509                                         printf("Using unknown codec 0x%02x.\n", negotiated_codec);
510                                         break;
511                                 }
512                                 sco_demo_set_codec(negotiated_codec);
513                                 hci_request_sco_can_send_now_event();
514                             }
515                             break;
516                         case HFP_SUBEVENT_AUDIO_CONNECTION_RELEASED:
517                             sco_handle = HCI_CON_HANDLE_INVALID;
518                             printf("Audio connection released\n");
519                             sco_demo_close();
520                             break;
521                         case  HFP_SUBEVENT_COMPLETE:
522                             status = hfp_subevent_complete_get_status(event);
523                             if (status == ERROR_CODE_SUCCESS){
524                                 printf("Cmd \'%c\' succeeded\n", cmd);
525                             } else {
526                                 printf("Cmd \'%c\' failed with status 0x%02x\n", cmd, status);
527                             }
528                             break;
529                         case HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED:
530                             printf("AG_INDICATOR_STATUS_CHANGED, AG indicator (index: %d) to: %d of range [%d, %d], name '%s'\n",
531                                 hfp_subevent_ag_indicator_status_changed_get_indicator_index(event),
532                                 hfp_subevent_ag_indicator_status_changed_get_indicator_status(event),
533                                 hfp_subevent_ag_indicator_status_changed_get_indicator_min_range(event),
534                                 hfp_subevent_ag_indicator_status_changed_get_indicator_max_range(event),
535                                 (const char*) hfp_subevent_ag_indicator_status_changed_get_indicator_name(event));
536                             break;
537                         case HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED:
538                             printf("NETWORK_OPERATOR_CHANGED, operator mode: %d, format: %d, name: %s\n",
539                                 hfp_subevent_network_operator_changed_get_network_operator_mode(event),
540                                 hfp_subevent_network_operator_changed_get_network_operator_format(event),
541                                 (char *) hfp_subevent_network_operator_changed_get_network_operator_name(event));
542                             break;
543                         case HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR:
544                             printf("EXTENDED_AUDIO_GATEWAY_ERROR_REPORT, status : 0x%02x\n",
545                                 hfp_subevent_extended_audio_gateway_error_get_error(event));
546                             break;
547                         case HFP_SUBEVENT_RING:
548                             printf("** Ring **\n");
549                             break;
550                         case HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG:
551                             printf("Phone number for voice tag: %s\n",
552                                 (const char *) hfp_subevent_number_for_voice_tag_get_number(event));
553                             break;
554                         case HFP_SUBEVENT_SPEAKER_VOLUME:
555                             printf("Speaker volume: gain %u\n",
556                                 hfp_subevent_speaker_volume_get_gain(event));
557                             break;
558                         case HFP_SUBEVENT_MICROPHONE_VOLUME:
559                             printf("Microphone volume: gain %u\n",
560                             hfp_subevent_microphone_volume_get_gain(event));
561                             break;
562                         case HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION:
563                             printf("Caller ID, number %s\n", hfp_subevent_calling_line_identification_notification_get_number(event));
564                             break;
565                         case HFP_SUBEVENT_ENHANCED_CALL_STATUS:
566                             printf("Enhanced call status:\n");
567                             printf("  - call index: %d \n", hfp_subevent_enhanced_call_status_get_clcc_idx(event));
568                             printf("  - direction : %s \n", hfp_enhanced_call_dir2str(hfp_subevent_enhanced_call_status_get_clcc_dir(event)));
569                             printf("  - status    : %s \n", hfp_enhanced_call_status2str(hfp_subevent_enhanced_call_status_get_clcc_status(event)));
570                             printf("  - mode      : %s \n", hfp_enhanced_call_mode2str(hfp_subevent_enhanced_call_status_get_clcc_mode(event)));
571                             printf("  - multipart : %s \n", hfp_enhanced_call_mpty2str(hfp_subevent_enhanced_call_status_get_clcc_mpty(event)));
572                             printf("  - type      : %d \n", hfp_subevent_enhanced_call_status_get_bnip_type(event));
573                             printf("  - number    : %s \n", hfp_subevent_enhanced_call_status_get_bnip_number(event));
574                             break;
575 
576                         case HFP_SUBEVENT_VOICE_RECOGNITION_STATUS:
577                             status = hfp_subevent_voice_recognition_status_get_status(event);
578                             if (status != ERROR_CODE_SUCCESS){
579                                 printf("Voice Recognition command failed with status 0x%02x\n", status);
580                                 break;
581                             }
582                             printf("\n");
583                             switch(hfp_subevent_voice_recognition_status_get_state(event)){
584                                 case 0:
585                                     printf("Voice recognition status DEACTIVATED\n");
586                                     break;
587                                 case 1:
588                                     printf("Voice recognition status ACTIVATED\n");
589                                     break;
590                                 default:
591                                     btstack_assert(false);
592                                     break;
593                             }
594                             printf("\n");
595                             break;
596 
597                         case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_STATUS:
598                             status = hfp_subevent_voice_recognition_status_get_status(event);
599                             if (status != ERROR_CODE_SUCCESS){
600                                 printf("Enhanced Voice Recognition command failed with status 0x%02x\n", status);
601                                 break;
602                             }
603                             printf("\n");
604                             switch(hfp_subevent_voice_recognition_status_get_state(event)){
605                                 case 0:
606                                     printf("Enhanced Voice recognition status DEACTIVATED\n");
607                                     break;
608                                 case 1:
609                                     printf("Enhanced Voice recognition status ACTIVATED\n");
610                                     break;
611                                 default:
612                                     btstack_assert(false);
613                                     break;
614                             }
615                             printf("\n");
616                             break;
617 
618                         default:
619                             break;
620                     }
621                     break;
622 
623                 default:
624                     break;
625             }
626             break;
627 
628         default:
629             break;
630     }
631 
632 }
633 
634 /* @section Main Application Setup
635  *
636  * @text Listing MainConfiguration shows main application code.
637  * To run a HFP HF service you need to initialize the SDP, and to create and register HFP HF record with it.
638  * The packet_handler is used for sending commands to the HFP AG. It also receives the HFP AG's answers.
639  * The stdin_process callback allows for sending commands to the HFP AG.
640  * At the end the Bluetooth stack is started.
641  */
642 
643 /* LISTING_START(MainConfiguration): Setup HFP Hands-Free unit */
644 int btstack_main(int argc, const char * argv[]);
645 int btstack_main(int argc, const char * argv[]){
646     (void)argc;
647     (void)argv;
648 
649     sco_demo_init();
650 
651     gap_discoverable_control(1);
652     gap_set_class_of_device(0x200408);
653     gap_set_local_name("HFP HF Demo 00:00:00:00:00:00");
654 
655     // init L2CAP
656     l2cap_init();
657 
658     uint16_t hf_supported_features          =
659         (1<<HFP_HFSF_ESCO_S4)               |
660         (1<<HFP_HFSF_CLI_PRESENTATION_CAPABILITY) |
661         (1<<HFP_HFSF_HF_INDICATORS)         |
662         (1<<HFP_HFSF_CODEC_NEGOTIATION)     |
663         (1<<HFP_HFSF_ENHANCED_CALL_STATUS)  |
664         (1<<HFP_HFSF_VOICE_RECOGNITION_FUNCTION)  |
665         (1<<HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS) |
666         (1<<HFP_HFSF_REMOTE_VOLUME_CONTROL);
667     int wide_band_speech = 1;
668 
669     rfcomm_init();
670     hfp_hf_init(rfcomm_channel_nr);
671     hfp_hf_init_supported_features(hf_supported_features);
672     hfp_hf_init_hf_indicators(sizeof(indicators)/sizeof(uint16_t), indicators);
673     hfp_hf_init_codecs(sizeof(codecs), codecs);
674 
675     sdp_init();
676     memset(hfp_service_buffer, 0, sizeof(hfp_service_buffer));
677     hfp_hf_create_sdp_record(hfp_service_buffer, 0x10001, rfcomm_channel_nr, hfp_hf_service_name, hf_supported_features, wide_band_speech);
678     printf("SDP service record size: %u\n", de_get_len(hfp_service_buffer));
679     sdp_register_service(hfp_service_buffer);
680 
681     // register for HCI events and SCO packets
682     hci_event_callback_registration.callback = &packet_handler;
683     hci_add_event_handler(&hci_event_callback_registration);
684     hci_register_sco_packet_handler(&packet_handler);
685     hci_register_sco_packet_handler(&packet_handler);
686 
687     // register for HFP events
688     hfp_hf_register_packet_handler(packet_handler);
689 
690 #ifdef HAVE_BTSTACK_STDIN
691     // parse human readable Bluetooth address
692     sscanf_bd_addr(device_addr_string, device_addr);
693     btstack_stdin_setup(stdin_process);
694 #endif
695     // turn on!
696     hci_power_control(HCI_POWER_ON);
697     return 0;
698 }
699 /* LISTING_END */
700 /* EXAMPLE_END */
701