xref: /btstack/example/hfp_hf_demo.c (revision 553a4a561f786fff6050306fb8f8ca8e28d447d4)
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 = "00:02:72:DC:31:C1";
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("m - deactivate echo canceling and noise reduction\n");
147     printf("c/C - disable/enable registration status update for all AG indicators\n");
148     printf("e/E - disable/enable reporting of the extended AG error result code\n");
149     printf("k/K - deactivate/activate call waiting notification\n");
150     printf("l/L - deactivate/activate calling line notification\n");
151     printf("n/N - deactivate/activate voice recognition\n");
152     printf("z/Z - deactivate/activate enhanced voice recognition\n");
153     printf("h   - start new audio enhanced voice recognition session\n");
154 
155     printf("0123456789#*-+ - send DTMF dial tones\n");
156     printf("x - request phone number for voice tag     | X - current call status (ECS)\n");
157     printf("y - release call with index 2 (ECC)        | Y - private consultation with call 2(ECC)\n");
158     printf("[ - Query Response and Hold status (RHH ?) | ] - Place call in a response and held state(RHH 0)\n");
159     printf("{ - Accept held call(RHH 1)                | } - Reject held call(RHH 2)\n");
160     printf("? - Query Subscriber Number (NUM)\n");
161     printf("! - Update HF indicator with assigned number 1 (HFI)\n");
162     printf("\n");
163 }
164 
165 static void report_status(uint8_t status, const char * message){
166     if (status != ERROR_CODE_SUCCESS){
167         printf("%s command failed, status 0x%02x\n", message, status);
168     } else {
169         printf("%s command successful\n", message);
170     }
171 }
172 
173 static void stdin_process(char c){
174     uint8_t status = ERROR_CODE_SUCCESS;
175 
176     cmd = c;    // used in packet handler
177 
178     if (cmd >= '0' && cmd <= '9'){
179         printf("DTMF Code: %c\n", cmd);
180         status = hfp_hf_send_dtmf_code(acl_handle, cmd);
181         return;
182     }
183 
184     switch (cmd){
185         case '#':
186         case '-':
187         case '+':
188         case '*':
189             log_info("USER:\'%c\'", cmd);
190             printf("DTMF Code: %c\n", cmd);
191             status = hfp_hf_send_dtmf_code(acl_handle, cmd);
192             break;
193         case 'a':
194             log_info("USER:\'%c\'", cmd);
195             printf("Establish Service level connection to device with Bluetooth address %s...\n", bd_addr_to_str(device_addr));
196             status = hfp_hf_establish_service_level_connection(device_addr);
197             break;
198         case 'A':
199             log_info("USER:\'%c\'", cmd);
200             printf("Release Service level connection.\n");
201             status = hfp_hf_release_service_level_connection(acl_handle);
202             break;
203         case 'b':
204             log_info("USER:\'%c\'", cmd);
205             printf("Establish Audio connection to device with Bluetooth address %s...\n", bd_addr_to_str(device_addr));
206             status = hfp_hf_establish_audio_connection(acl_handle);
207             break;
208         case 'B':
209             log_info("USER:\'%c\'", cmd);
210             printf("Release Audio service level connection.\n");
211             status = hfp_hf_release_audio_connection(acl_handle);
212             break;
213         case 'C':
214             log_info("USER:\'%c\'", cmd);
215             printf("Enable registration status update for all AG indicators.\n");
216             status = hfp_hf_enable_status_update_for_all_ag_indicators(acl_handle);
217             break;
218         case 'c':
219             log_info("USER:\'%c\'", cmd);
220             printf("Disable registration status update for all AG indicators.\n");
221             status = hfp_hf_disable_status_update_for_all_ag_indicators(acl_handle);
222             break;
223         case 'D':
224             log_info("USER:\'%c\'", cmd);
225             printf("Set HFP AG registration status update for individual indicators (0111111).\n");
226             status = hfp_hf_set_status_update_for_individual_ag_indicators(acl_handle, 63);
227             break;
228         case 'd':
229             log_info("USER:\'%c\'", cmd);
230             printf("Query network operator.\n");
231             status = hfp_hf_query_operator_selection(acl_handle);
232             break;
233         case 'E':
234             log_info("USER:\'%c\'", cmd);
235             printf("Enable reporting of the extended AG error result code.\n");
236             status = hfp_hf_enable_report_extended_audio_gateway_error_result_code(acl_handle);
237             break;
238         case 'e':
239             log_info("USER:\'%c\'", cmd);
240             printf("Disable reporting of the extended AG error result code.\n");
241             status = hfp_hf_disable_report_extended_audio_gateway_error_result_code(acl_handle);
242             break;
243         case 'f':
244             log_info("USER:\'%c\'", cmd);
245             printf("Answer incoming call.\n");
246             status = hfp_hf_answer_incoming_call(acl_handle);
247             break;
248         case 'F':
249             log_info("USER:\'%c\'", cmd);
250             printf("Hangup call.\n");
251             status = hfp_hf_terminate_call(acl_handle);
252             break;
253         case 'G':
254             log_info("USER:\'%c\'", cmd);
255             printf("Reject incoming call.\n");
256             status = hfp_hf_reject_incoming_call(acl_handle);
257             break;
258         case 'g':
259             log_info("USER:\'%c\'", cmd);
260             printf("Query operator.\n");
261             status = hfp_hf_query_operator_selection(acl_handle);
262             break;
263         case 't':
264             log_info("USER:\'%c\'", cmd);
265             printf("Terminate HCI connection.\n");
266             gap_disconnect(acl_handle);
267             break;
268         case 'i':
269             log_info("USER:\'%c\'", cmd);
270             printf("Dial 1234567\n");
271             status = hfp_hf_dial_number(acl_handle, "1234567");
272             break;
273         case 'I':
274             log_info("USER:\'%c\'", cmd);
275             printf("Dial 7654321\n");
276             status = hfp_hf_dial_number(acl_handle, "7654321");
277             break;
278         case 'j':
279             log_info("USER:\'%c\'", cmd);
280             printf("Dial #1\n");
281             status = hfp_hf_dial_memory(acl_handle,1);
282             break;
283         case 'J':
284             log_info("USER:\'%c\'", cmd);
285             printf("Dial #99\n");
286             status = hfp_hf_dial_memory(acl_handle,99);
287             break;
288         case 'k':
289             log_info("USER:\'%c\'", cmd);
290             printf("Deactivate call waiting notification\n");
291             status = hfp_hf_deactivate_call_waiting_notification(acl_handle);
292             break;
293         case 'K':
294             log_info("USER:\'%c\'", cmd);
295             printf("Activate call waiting notification\n");
296             status = hfp_hf_activate_call_waiting_notification(acl_handle);
297             break;
298         case 'l':
299             log_info("USER:\'%c\'", cmd);
300             printf("Deactivate calling line notification\n");
301             status = hfp_hf_deactivate_calling_line_notification(acl_handle);
302             break;
303         case 'L':
304             log_info("USER:\'%c\'", cmd);
305             printf("Activate calling line notification\n");
306             status = hfp_hf_activate_calling_line_notification(acl_handle);
307             break;
308         case 'm':
309             log_info("USER:\'%c\'", cmd);
310             printf("Deactivate echo canceling and noise reduction\n");
311             status = hfp_hf_deactivate_echo_canceling_and_noise_reduction(acl_handle);
312             break;
313         case 'n':
314             log_info("USER:\'%c\'", cmd);
315             printf("Deactivate voice recognition\n");
316             status = hfp_hf_deactivate_voice_recognition(acl_handle);
317             break;
318         case 'N':
319             log_info("USER:\'%c\'", cmd);
320             printf("Activate voice recognition %s\n", bd_addr_to_str(device_addr));
321             status = hfp_hf_activate_voice_recognition(acl_handle);
322             break;
323         case 'z':
324             log_info("USER:\'%c\'", cmd);
325             printf("Deactivate enhanced voice recognition\n");
326             status = hfp_hf_deactivate_enhanced_voice_recognition(acl_handle);
327             break;
328         case 'Z':
329             log_info("USER:\'%c\'", cmd);
330             printf("Activate enhanced voice recognition %s\n", bd_addr_to_str(device_addr));
331             status = hfp_hf_activate_enhanced_voice_recognition(acl_handle);
332             break;
333         case 'h':
334             log_info("USER:\'%c\'", cmd);
335             printf("Start new audio enhanced voice recognition session %s\n", bd_addr_to_str(device_addr));
336             status = hfp_hf_enhanced_voice_recognition_report_ready_for_audio(acl_handle);
337             break;
338         case 'o':
339             log_info("USER:\'%c\'", cmd);
340             printf("Set speaker gain to 0 (minimum)\n");
341             status = hfp_hf_set_speaker_gain(acl_handle, 0);
342             break;
343         case 'O':
344             log_info("USER:\'%c\'", cmd);
345             printf("Set speaker gain to 9 (default)\n");
346             status = hfp_hf_set_speaker_gain(acl_handle, 9);
347             break;
348         case 'p':
349             log_info("USER:\'%c\'", cmd);
350             printf("Set speaker gain to 12 (higher)\n");
351             status = hfp_hf_set_speaker_gain(acl_handle, 12);
352             break;
353         case 'P':
354             log_info("USER:\'%c\'", cmd);
355             printf("Set speaker gain to 15 (maximum)\n");
356             status = hfp_hf_set_speaker_gain(acl_handle, 15);
357             break;
358         case 'q':
359             log_info("USER:\'%c\'", cmd);
360             printf("Set microphone gain to 0\n");
361             status = hfp_hf_set_microphone_gain(acl_handle, 0);
362             break;
363         case 'Q':
364             log_info("USER:\'%c\'", cmd);
365             printf("Set microphone gain to 9\n");
366             status = hfp_hf_set_microphone_gain(acl_handle, 9);
367             break;
368         case 's':
369             log_info("USER:\'%c\'", cmd);
370             printf("Set microphone gain to 12\n");
371             status = hfp_hf_set_microphone_gain(acl_handle, 12);
372             break;
373         case 'S':
374             log_info("USER:\'%c\'", cmd);
375             printf("Set microphone gain to 15\n");
376             status = hfp_hf_set_microphone_gain(acl_handle, 15);
377             break;
378         case 'u':
379             log_info("USER:\'%c\'", cmd);
380             printf("Send 'user busy' (Three-Way Call 0)\n");
381             status = hfp_hf_user_busy(acl_handle);
382             break;
383         case 'U':
384             log_info("USER:\'%c\'", cmd);
385             printf("End active call and accept waiting/held call (Three-Way Call 1)\n");
386             status = hfp_hf_end_active_and_accept_other(acl_handle);
387             break;
388         case 'v':
389             log_info("USER:\'%c\'", cmd);
390             printf("Swap active call and hold/waiting call (Three-Way Call 2)\n");
391             status = hfp_hf_swap_calls(acl_handle);
392             break;
393         case 'V':
394             log_info("USER:\'%c\'", cmd);
395             printf("Join hold call (Three-Way Call 3)\n");
396             status = hfp_hf_join_held_call(acl_handle);
397             break;
398         case 'w':
399             log_info("USER:\'%c\'", cmd);
400             printf("Connect calls (Three-Way Call 4)\n");
401             status = hfp_hf_connect_calls(acl_handle);
402             break;
403         case 'W':
404             log_info("USER:\'%c\'", cmd);
405             printf("Redial\n");
406             status = hfp_hf_redial_last_number(acl_handle);
407             break;
408         case 'x':
409             log_info("USER:\'%c\'", cmd);
410             printf("Request phone number for voice tag\n");
411             status = hfp_hf_request_phone_number_for_voice_tag(acl_handle);
412             break;
413         case 'X':
414             log_info("USER:\'%c\'", cmd);
415             printf("Query current call status\n");
416             status = hfp_hf_query_current_call_status(acl_handle);
417             break;
418         case 'y':
419             log_info("USER:\'%c\'", cmd);
420             printf("Release call with index 2\n");
421             status = hfp_hf_release_call_with_index(acl_handle, 2);
422             break;
423         case 'Y':
424             log_info("USER:\'%c\'", cmd);
425             printf("Private consultation with call 2\n");
426             status = hfp_hf_private_consultation_with_call(acl_handle, 2);
427             break;
428         case '[':
429             log_info("USER:\'%c\'", cmd);
430             printf("Query Response and Hold status (RHH ?)\n");
431             status = hfp_hf_rrh_query_status(acl_handle);
432             break;
433         case ']':
434             log_info("USER:\'%c\'", cmd);
435             printf("Place call in a response and held state (RHH 0)\n");
436             status = hfp_hf_rrh_hold_call(acl_handle);
437            break;
438         case '{':
439             log_info("USER:\'%c\'", cmd);
440             printf("Accept held call (RHH 1)\n");
441             status = hfp_hf_rrh_accept_held_call(acl_handle);
442             break;
443         case '}':
444             log_info("USER:\'%c\'", cmd);
445             printf("Reject held call (RHH 2)\n");
446             status = hfp_hf_rrh_reject_held_call(acl_handle);
447             break;
448         case '?':
449             log_info("USER:\'%c\'", cmd);
450             printf("Query Subscriber Number\n");
451             status = hfp_hf_query_subscriber_number(acl_handle);
452             break;
453         case '!':
454             log_info("USER:\'%c\'", cmd);
455             printf("Update HF indicator with assigned number 1 (HFI)\n");
456             status = hfp_hf_set_hf_indicator(acl_handle, 1, 1);
457             break;
458         default:
459             show_usage();
460             break;
461     }
462 
463     if (status != ERROR_CODE_SUCCESS){
464         printf("Could not perform command, status 0x%02x\n", status);
465     }
466 }
467 #endif
468 
469 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){
470     UNUSED(channel);
471     uint8_t status;
472 
473     switch (packet_type){
474 
475         case HCI_SCO_DATA_PACKET:
476             if (READ_SCO_CONNECTION_HANDLE(event) != sco_handle) break;
477             sco_demo_receive(event, event_size);
478             break;
479 
480         case HCI_EVENT_PACKET:
481             switch (hci_event_packet_get_type(event)){
482                 case HCI_EVENT_SCO_CAN_SEND_NOW:
483                     sco_demo_send(sco_handle);
484                     break;
485 
486                 case HCI_EVENT_COMMAND_COMPLETE:
487                     if (HCI_EVENT_IS_COMMAND_COMPLETE(event, hci_read_local_supported_features)){
488                         dump_supported_codecs();
489                     }
490                     break;
491 
492                 case HCI_EVENT_HFP_META:
493                     switch (hci_event_hfp_meta_get_subevent_code(event)) {
494                         case HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED:
495                             status = hfp_subevent_service_level_connection_established_get_status(event);
496                             if (status != ERROR_CODE_SUCCESS){
497                                 printf("Connection failed, status 0x%02x\n", status);
498                                 break;
499                             }
500                             acl_handle = hfp_subevent_service_level_connection_established_get_acl_handle(event);
501                             hfp_subevent_service_level_connection_established_get_bd_addr(event, device_addr);
502                             printf("Service level connection established %s.\n\n", bd_addr_to_str(device_addr));
503                             break;
504                         case HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_RELEASED:
505                             acl_handle = HCI_CON_HANDLE_INVALID;
506                             printf("Service level connection released.\n\n");
507                             break;
508                         case HFP_SUBEVENT_AUDIO_CONNECTION_ESTABLISHED:
509                             status = hfp_subevent_audio_connection_established_get_status(event);
510                             if (status != ERROR_CODE_SUCCESS){
511                                 printf("Audio connection establishment failed with status 0x%02x\n", status);
512                             } else {
513                                 sco_handle = hfp_subevent_audio_connection_established_get_sco_handle(event);
514                                 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle);
515                                 negotiated_codec = hfp_subevent_audio_connection_established_get_negotiated_codec(event);
516                                 switch (negotiated_codec){
517                                     case 0x01:
518                                         printf("Using CVSD codec.\n");
519                                         break;
520                                     case 0x02:
521                                         printf("Using mSBC codec.\n");
522                                         break;
523                                     default:
524                                         printf("Using unknown codec 0x%02x.\n", negotiated_codec);
525                                         break;
526                                 }
527                                 sco_demo_set_codec(negotiated_codec);
528                                 hci_request_sco_can_send_now_event();
529                             }
530                             break;
531 
532                         case HFP_SUBEVENT_CALL_ANSWERED:
533                             printf("Call answered\n");
534                             break;
535 
536                         case HFP_SUBEVENT_CALL_TERMINATED:
537                             printf("Call terminated\n");
538                             break;
539 
540                         case HFP_SUBEVENT_AUDIO_CONNECTION_RELEASED:
541                             sco_handle = HCI_CON_HANDLE_INVALID;
542                             printf("Audio connection released\n");
543                             sco_demo_close();
544                             break;
545                         case  HFP_SUBEVENT_COMPLETE:
546                             status = hfp_subevent_complete_get_status(event);
547                             if (status == ERROR_CODE_SUCCESS){
548                                 printf("Cmd \'%c\' succeeded\n", cmd);
549                             } else {
550                                 printf("Cmd \'%c\' failed with status 0x%02x\n", cmd, status);
551                             }
552                             break;
553                         case HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED:
554                             printf("AG_INDICATOR_STATUS_CHANGED, AG indicator (index: %d) to: %d of range [%d, %d], name '%s'\n",
555                                 hfp_subevent_ag_indicator_status_changed_get_indicator_index(event),
556                                 hfp_subevent_ag_indicator_status_changed_get_indicator_status(event),
557                                 hfp_subevent_ag_indicator_status_changed_get_indicator_min_range(event),
558                                 hfp_subevent_ag_indicator_status_changed_get_indicator_max_range(event),
559                                 (const char*) hfp_subevent_ag_indicator_status_changed_get_indicator_name(event));
560                             break;
561                         case HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED:
562                             printf("NETWORK_OPERATOR_CHANGED, operator mode: %d, format: %d, name: %s\n",
563                                 hfp_subevent_network_operator_changed_get_network_operator_mode(event),
564                                 hfp_subevent_network_operator_changed_get_network_operator_format(event),
565                                 (char *) hfp_subevent_network_operator_changed_get_network_operator_name(event));
566                             break;
567                         case HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR:
568                             printf("EXTENDED_AUDIO_GATEWAY_ERROR_REPORT, status : 0x%02x\n",
569                                 hfp_subevent_extended_audio_gateway_error_get_error(event));
570                             break;
571                         case HFP_SUBEVENT_START_RINGING:
572                             printf("** START Ringing **\n");
573                             break;
574                         case HFP_SUBEVENT_RING:
575                             printf("** Ring **\n");
576                             break;
577                         case HFP_SUBEVENT_STOP_RINGING:
578                             printf("** STOP Ringing **\n");
579                             break;
580                         case HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG:
581                             printf("Phone number for voice tag: %s\n",
582                                 (const char *) hfp_subevent_number_for_voice_tag_get_number(event));
583                             break;
584                         case HFP_SUBEVENT_SPEAKER_VOLUME:
585                             printf("Speaker volume: gain %u\n",
586                                 hfp_subevent_speaker_volume_get_gain(event));
587                             break;
588                         case HFP_SUBEVENT_MICROPHONE_VOLUME:
589                             printf("Microphone volume: gain %u\n",
590                             hfp_subevent_microphone_volume_get_gain(event));
591                             break;
592                         case HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION:
593                             printf("Caller ID, number %s\n", hfp_subevent_calling_line_identification_notification_get_number(event));
594                             break;
595                         case HFP_SUBEVENT_ENHANCED_CALL_STATUS:
596                             printf("Enhanced call status:\n");
597                             printf("  - call index: %d \n", hfp_subevent_enhanced_call_status_get_clcc_idx(event));
598                             printf("  - direction : %s \n", hfp_enhanced_call_dir2str(hfp_subevent_enhanced_call_status_get_clcc_dir(event)));
599                             printf("  - status    : %s \n", hfp_enhanced_call_status2str(hfp_subevent_enhanced_call_status_get_clcc_status(event)));
600                             printf("  - mode      : %s \n", hfp_enhanced_call_mode2str(hfp_subevent_enhanced_call_status_get_clcc_mode(event)));
601                             printf("  - multipart : %s \n", hfp_enhanced_call_mpty2str(hfp_subevent_enhanced_call_status_get_clcc_mpty(event)));
602                             printf("  - type      : %d \n", hfp_subevent_enhanced_call_status_get_bnip_type(event));
603                             printf("  - number    : %s \n", hfp_subevent_enhanced_call_status_get_bnip_number(event));
604                             break;
605 
606                         case HFP_SUBEVENT_VOICE_RECOGNITION_ENABLED:
607                             status = hfp_subevent_voice_recognition_enabled_get_status(event);
608                             if (status != ERROR_CODE_SUCCESS){
609                                 printf("Voice Recognition command failed\n");
610                                 break;
611                             }
612 
613                             switch (hfp_subevent_voice_recognition_enabled_get_enhanced(event)){
614                                 case 1:
615                                     printf("\nVoice recognition status ENABLED\n\n");
616                                     break;
617                                 default:
618                                     printf("\nEnhanced voice recognition status ENABLED\n\n");
619                                     break;
620                             }
621                             break;
622 
623                         case HFP_SUBEVENT_VOICE_RECOGNITION_DISABLED:
624                             status = hfp_subevent_voice_recognition_disabled_get_status(event);
625                             if (status != ERROR_CODE_SUCCESS){
626                                 printf("Voice Recognition Disable command failed\n");
627                                 break;
628                             }
629                             printf("Voice Recognition DISABLED\n");
630                             break;
631 
632                         case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_HF_READY_FOR_AUDIO:
633                             status = hfp_subevent_enhanced_voice_recognition_hf_ready_for_audio_get_status(event);
634                             report_status(status, "Enhanced Voice recognition: READY FOR AUDIO");
635                             break;
636 
637                         case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_READY_TO_ACCEPT_AUDIO_INPUT:
638                             printf("\nEnhanced Voice recognition AG status: AG READY TO ACCEPT AUDIO INPUT\n\n");
639                             break;
640                         case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_IS_STARTING_SOUND:
641                             printf("\nEnhanced Voice recognition AG status: AG IS STARTING SOUND\n\n");
642                             break;
643                         case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_IS_PROCESSING_AUDIO_INPUT:
644                             printf("\nEnhanced Voice recognition AG status: AG IS PROCESSING AUDIO INPUT\n\n");
645                             break;
646 
647                         case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE:
648                             printf("\nEnhanced Voice recognition AG message: \'%s\'\n", hfp_subevent_enhanced_voice_recognition_ag_message_get_text(event));
649                             break;
650 
651                         case HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE:
652                             status = hfp_subevent_echo_canceling_and_noise_reduction_deactivate_get_status(event);
653                             report_status(status, "Echo Canceling and Noise Reduction Deactivate");
654                             break;
655                         default:
656                             break;
657                     }
658                     break;
659 
660                 default:
661                     break;
662             }
663             break;
664 
665         default:
666             break;
667     }
668 
669 }
670 
671 /* @section Main Application Setup
672  *
673  * @text Listing MainConfiguration shows main application code.
674  * To run a HFP HF service you need to initialize the SDP, and to create and register HFP HF record with it.
675  * The packet_handler is used for sending commands to the HFP AG. It also receives the HFP AG's answers.
676  * The stdin_process callback allows for sending commands to the HFP AG.
677  * At the end the Bluetooth stack is started.
678  */
679 
680 /* LISTING_START(MainConfiguration): Setup HFP Hands-Free unit */
681 int btstack_main(int argc, const char * argv[]);
682 int btstack_main(int argc, const char * argv[]){
683     (void)argc;
684     (void)argv;
685 
686     sco_demo_init();
687 
688     gap_discoverable_control(1);
689     gap_set_class_of_device(0x200408);
690     gap_set_local_name("HFP HF Demo 00:00:00:00:00:00");
691 
692     // init L2CAP
693     l2cap_init();
694 
695     uint16_t hf_supported_features          =
696         (1<<HFP_HFSF_ESCO_S4)               |
697         (1<<HFP_HFSF_CLI_PRESENTATION_CAPABILITY) |
698         (1<<HFP_HFSF_HF_INDICATORS)         |
699         (1<<HFP_HFSF_CODEC_NEGOTIATION)     |
700         (1<<HFP_HFSF_ENHANCED_CALL_STATUS)  |
701         (1<<HFP_HFSF_VOICE_RECOGNITION_FUNCTION)  |
702         (1<<HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS) |
703         (1<<HFP_HFSF_EC_NR_FUNCTION) |
704         (1<<HFP_HFSF_REMOTE_VOLUME_CONTROL);
705     int wide_band_speech = 1;
706 
707     rfcomm_init();
708     hfp_hf_init(rfcomm_channel_nr);
709     hfp_hf_init_supported_features(hf_supported_features);
710     hfp_hf_init_hf_indicators(sizeof(indicators)/sizeof(uint16_t), indicators);
711     hfp_hf_init_codecs(sizeof(codecs), codecs);
712 
713     sdp_init();
714     memset(hfp_service_buffer, 0, sizeof(hfp_service_buffer));
715     hfp_hf_create_sdp_record(hfp_service_buffer, 0x10001, rfcomm_channel_nr, hfp_hf_service_name, hf_supported_features, wide_band_speech);
716     printf("SDP service record size: %u\n", de_get_len(hfp_service_buffer));
717     sdp_register_service(hfp_service_buffer);
718 
719     // register for HCI events and SCO packets
720     hci_event_callback_registration.callback = &packet_handler;
721     hci_add_event_handler(&hci_event_callback_registration);
722     hci_register_sco_packet_handler(&packet_handler);
723     hci_register_sco_packet_handler(&packet_handler);
724 
725     // register for HFP events
726     hfp_hf_register_packet_handler(packet_handler);
727 
728 #ifdef HAVE_BTSTACK_STDIN
729     // parse human readable Bluetooth address
730     sscanf_bd_addr(device_addr_string, device_addr);
731     btstack_stdin_setup(stdin_process);
732 #endif
733     // turn on!
734     hci_power_control(HCI_POWER_ON);
735     return 0;
736 }
737 /* LISTING_END */
738 /* EXAMPLE_END */
739