xref: /btstack/example/hfp_hf_demo.c (revision cd5f23a3250874824c01a2b3326a9522fea3f99f)
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 = "54:E4:3A:26:A2:39";
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("0123456789#*-+ - send DTMF dial tones\n");
153     printf("x - request phone number for voice tag     | X - current call status (ECS)\n");
154     printf("y - release call with index 2 (ECC)        | Y - private consulation with call 2(ECC)\n");
155     printf("[ - Query Response and Hold status (RHH ?) | ] - Place call in a response and held state(RHH 0)\n");
156     printf("{ - Accept held call(RHH 1)                | } - Reject held call(RHH 2)\n");
157     printf("? - Query Subscriber Number (NUM)\n");
158     printf("! - Update HF indicator with assigned number 1 (HFI)\n");
159     printf("\n");
160 }
161 
162 static void stdin_process(char c){
163     cmd = c;    // used in packet handler
164 
165     if (cmd >= '0' && cmd <= '9'){
166         printf("DTMF Code: %c\n", cmd);
167         hfp_hf_send_dtmf_code(acl_handle, cmd);
168         return;
169     }
170 
171     switch (cmd){
172         case '#':
173         case '-':
174         case '+':
175         case '*':
176             log_info("USER:\'%c\'", cmd);
177             printf("DTMF Code: %c\n", cmd);
178             hfp_hf_send_dtmf_code(acl_handle, cmd);
179             break;
180         case 'a':
181             log_info("USER:\'%c\'", cmd);
182             printf("Establish Service level connection to device with Bluetooth address %s...\n", bd_addr_to_str(device_addr));
183             hfp_hf_establish_service_level_connection(device_addr);
184             break;
185         case 'A':
186             log_info("USER:\'%c\'", cmd);
187             printf("Release Service level connection.\n");
188             hfp_hf_release_service_level_connection(acl_handle);
189             break;
190         case 'b':
191             log_info("USER:\'%c\'", cmd);
192             printf("Establish Audio connection to device with Bluetooth address %s...\n", bd_addr_to_str(device_addr));
193             hfp_hf_establish_audio_connection(acl_handle);
194             break;
195         case 'B':
196             log_info("USER:\'%c\'", cmd);
197             printf("Release Audio service level connection.\n");
198             hfp_hf_release_audio_connection(acl_handle);
199             break;
200         case 'C':
201             log_info("USER:\'%c\'", cmd);
202             printf("Enable registration status update for all AG indicators.\n");
203             hfp_hf_enable_status_update_for_all_ag_indicators(acl_handle);
204             break;
205         case 'c':
206             log_info("USER:\'%c\'", cmd);
207             printf("Disable registration status update for all AG indicators.\n");
208             hfp_hf_disable_status_update_for_all_ag_indicators(acl_handle);
209             break;
210         case 'D':
211             log_info("USER:\'%c\'", cmd);
212             printf("Set HFP AG registration status update for individual indicators (0111111).\n");
213             hfp_hf_set_status_update_for_individual_ag_indicators(acl_handle, 63);
214             break;
215         case 'd':
216             log_info("USER:\'%c\'", cmd);
217             printf("Query network operator.\n");
218             hfp_hf_query_operator_selection(acl_handle);
219             break;
220         case 'E':
221             log_info("USER:\'%c\'", cmd);
222             printf("Enable reporting of the extended AG error result code.\n");
223             hfp_hf_enable_report_extended_audio_gateway_error_result_code(acl_handle);
224             break;
225         case 'e':
226             log_info("USER:\'%c\'", cmd);
227             printf("Disable reporting of the extended AG error result code.\n");
228             hfp_hf_disable_report_extended_audio_gateway_error_result_code(acl_handle);
229             break;
230         case 'f':
231             log_info("USER:\'%c\'", cmd);
232             printf("Answer incoming call.\n");
233             hfp_hf_answer_incoming_call(acl_handle);
234             break;
235         case 'F':
236             log_info("USER:\'%c\'", cmd);
237             printf("Hangup call.\n");
238             hfp_hf_terminate_call(acl_handle);
239             break;
240         case 'G':
241             log_info("USER:\'%c\'", cmd);
242             printf("Reject incoming call.\n");
243             hfp_hf_reject_incoming_call(acl_handle);
244             break;
245         case 'g':
246             log_info("USER:\'%c\'", cmd);
247             printf("Query operator.\n");
248             hfp_hf_query_operator_selection(acl_handle);
249             break;
250         case 't':
251             log_info("USER:\'%c\'", cmd);
252             printf("Terminate HCI connection.\n");
253             gap_disconnect(acl_handle);
254             break;
255         case 'i':
256             log_info("USER:\'%c\'", cmd);
257             printf("Dial 1234567\n");
258             hfp_hf_dial_number(acl_handle, "1234567");
259             break;
260         case 'I':
261             log_info("USER:\'%c\'", cmd);
262             printf("Dial 7654321\n");
263             hfp_hf_dial_number(acl_handle, "7654321");
264             break;
265         case 'j':
266             log_info("USER:\'%c\'", cmd);
267             printf("Dial #1\n");
268             hfp_hf_dial_memory(acl_handle,1);
269             break;
270         case 'J':
271             log_info("USER:\'%c\'", cmd);
272             printf("Dial #99\n");
273             hfp_hf_dial_memory(acl_handle,99);
274             break;
275         case 'k':
276             log_info("USER:\'%c\'", cmd);
277             printf("Deactivate call waiting notification\n");
278             hfp_hf_deactivate_call_waiting_notification(acl_handle);
279             break;
280         case 'K':
281             log_info("USER:\'%c\'", cmd);
282             printf("Activate call waiting notification\n");
283             hfp_hf_activate_call_waiting_notification(acl_handle);
284             break;
285         case 'l':
286             log_info("USER:\'%c\'", cmd);
287             printf("Deactivate calling line notification\n");
288             hfp_hf_deactivate_calling_line_notification(acl_handle);
289             break;
290         case 'L':
291             log_info("USER:\'%c\'", cmd);
292             printf("Activate calling line notification\n");
293             hfp_hf_activate_calling_line_notification(acl_handle);
294             break;
295         case 'm':
296             log_info("USER:\'%c\'", cmd);
297             printf("Deactivate echo canceling and noise reduction\n");
298             hfp_hf_deactivate_echo_canceling_and_noise_reduction(acl_handle);
299             break;
300         case 'M':
301             log_info("USER:\'%c\'", cmd);
302             printf("Activate echo canceling and noise reduction\n");
303             hfp_hf_activate_echo_canceling_and_noise_reduction(acl_handle);
304             break;
305         case 'n':
306             log_info("USER:\'%c\'", cmd);
307             printf("Deactivate voice recognition\n");
308             hfp_hf_deactivate_voice_recognition_notification(acl_handle);
309             break;
310         case 'N':
311             log_info("USER:\'%c\'", cmd);
312             printf("Activate voice recognition %s\n", bd_addr_to_str(device_addr));
313             hfp_hf_activate_voice_recognition_notification(acl_handle);
314             break;
315         case 'o':
316             log_info("USER:\'%c\'", cmd);
317             printf("Set speaker gain to 0 (minimum)\n");
318             hfp_hf_set_speaker_gain(acl_handle, 0);
319             break;
320         case 'O':
321             log_info("USER:\'%c\'", cmd);
322             printf("Set speaker gain to 9 (default)\n");
323             hfp_hf_set_speaker_gain(acl_handle, 9);
324             break;
325         case 'p':
326             log_info("USER:\'%c\'", cmd);
327             printf("Set speaker gain to 12 (higher)\n");
328             hfp_hf_set_speaker_gain(acl_handle, 12);
329             break;
330         case 'P':
331             log_info("USER:\'%c\'", cmd);
332             printf("Set speaker gain to 15 (maximum)\n");
333             hfp_hf_set_speaker_gain(acl_handle, 15);
334             break;
335         case 'q':
336             log_info("USER:\'%c\'", cmd);
337             printf("Set microphone gain to 0\n");
338             hfp_hf_set_microphone_gain(acl_handle, 0);
339             break;
340         case 'Q':
341             log_info("USER:\'%c\'", cmd);
342             printf("Set microphone gain to 9\n");
343             hfp_hf_set_microphone_gain(acl_handle, 9);
344             break;
345         case 's':
346             log_info("USER:\'%c\'", cmd);
347             printf("Set microphone gain to 12\n");
348             hfp_hf_set_microphone_gain(acl_handle, 12);
349             break;
350         case 'S':
351             log_info("USER:\'%c\'", cmd);
352             printf("Set microphone gain to 15\n");
353             hfp_hf_set_microphone_gain(acl_handle, 15);
354             break;
355         case 'u':
356             log_info("USER:\'%c\'", cmd);
357             printf("Send 'user busy' (Three-Way Call 0)\n");
358             hfp_hf_user_busy(acl_handle);
359             break;
360         case 'U':
361             log_info("USER:\'%c\'", cmd);
362             printf("End active call and accept waiting/held call (Three-Way Call 1)\n");
363             hfp_hf_end_active_and_accept_other(acl_handle);
364             break;
365         case 'v':
366             log_info("USER:\'%c\'", cmd);
367             printf("Swap active call and hold/waiting call (Three-Way Call 2)\n");
368             hfp_hf_swap_calls(acl_handle);
369             break;
370         case 'V':
371             log_info("USER:\'%c\'", cmd);
372             printf("Join hold call (Three-Way Call 3)\n");
373             hfp_hf_join_held_call(acl_handle);
374             break;
375         case 'w':
376             log_info("USER:\'%c\'", cmd);
377             printf("Connect calls (Three-Way Call 4)\n");
378             hfp_hf_connect_calls(acl_handle);
379             break;
380         case 'W':
381             log_info("USER:\'%c\'", cmd);
382             printf("Redial\n");
383             hfp_hf_redial_last_number(acl_handle);
384             break;
385         case 'x':
386             log_info("USER:\'%c\'", cmd);
387             printf("Request phone number for voice tag\n");
388             hfp_hf_request_phone_number_for_voice_tag(acl_handle);
389             break;
390         case 'X':
391             log_info("USER:\'%c\'", cmd);
392             printf("Query current call status\n");
393             hfp_hf_query_current_call_status(acl_handle);
394             break;
395         case 'y':
396             log_info("USER:\'%c\'", cmd);
397             printf("Release call with index 2\n");
398             hfp_hf_release_call_with_index(acl_handle, 2);
399             break;
400         case 'Y':
401             log_info("USER:\'%c\'", cmd);
402             printf("Private consulation with call 2\n");
403             hfp_hf_private_consultation_with_call(acl_handle, 2);
404             break;
405         case '[':
406             log_info("USER:\'%c\'", cmd);
407             printf("Query Response and Hold status (RHH ?)\n");
408             hfp_hf_rrh_query_status(acl_handle);
409             break;
410         case ']':
411             log_info("USER:\'%c\'", cmd);
412             printf("Place call in a response and held state (RHH 0)\n");
413             hfp_hf_rrh_hold_call(acl_handle);
414            break;
415         case '{':
416             log_info("USER:\'%c\'", cmd);
417             printf("Accept held call (RHH 1)\n");
418             hfp_hf_rrh_accept_held_call(acl_handle);
419             break;
420         case '}':
421             log_info("USER:\'%c\'", cmd);
422             printf("Reject held call (RHH 2)\n");
423             hfp_hf_rrh_reject_held_call(acl_handle);
424             break;
425         case '?':
426             log_info("USER:\'%c\'", cmd);
427             printf("Query Subscriber Number\n");
428             hfp_hf_query_subscriber_number(acl_handle);
429             break;
430         case '!':
431             log_info("USER:\'%c\'", cmd);
432             printf("Update HF indicator with assigned number 1 (HFI)\n");
433             hfp_hf_set_hf_indicator(acl_handle, 1, 1);
434             break;
435         default:
436             show_usage();
437             break;
438     }
439 }
440 #endif
441 
442 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){
443     UNUSED(channel);
444     uint8_t status;
445 
446     switch (packet_type){
447 
448         case HCI_SCO_DATA_PACKET:
449             if (READ_SCO_CONNECTION_HANDLE(event) != sco_handle) break;
450             sco_demo_receive(event, event_size);
451             break;
452 
453         case HCI_EVENT_PACKET:
454             switch (event[0]){
455                 case HCI_EVENT_SCO_CAN_SEND_NOW:
456                     sco_demo_send(sco_handle);
457                     break;
458 
459                 case HCI_EVENT_COMMAND_COMPLETE:
460                     if (HCI_EVENT_IS_COMMAND_COMPLETE(event, hci_read_local_supported_features)){
461                         dump_supported_codecs();
462                     }
463                     break;
464 
465                 case HCI_EVENT_HFP_META:
466                     switch (event[2]) {
467                         case HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED:
468                             acl_handle = hfp_subevent_service_level_connection_established_get_con_handle(event);
469                             hfp_subevent_service_level_connection_established_get_bd_addr(event, device_addr);
470                             printf("Service level connection established %s.\n\n", bd_addr_to_str(device_addr));
471                             break;
472                         case HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_RELEASED:
473                             acl_handle = HCI_CON_HANDLE_INVALID;
474                             printf("Service level connection released.\n\n");
475                             break;
476                         case HFP_SUBEVENT_AUDIO_CONNECTION_ESTABLISHED:
477                             if (hfp_subevent_audio_connection_established_get_status(event)){
478                                 printf("Audio connection establishment failed with status 0x%02x\n", hfp_subevent_audio_connection_established_get_status(event));
479                             } else {
480                                 sco_handle = hfp_subevent_audio_connection_established_get_handle(event);
481                                 printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle);
482                                 negotiated_codec = hfp_subevent_audio_connection_established_get_negotiated_codec(event);
483                                 switch (negotiated_codec){
484                                     case 0x01:
485                                         printf("Using CVSD codec.\n");
486                                         break;
487                                     case 0x02:
488                                         printf("Using mSBC codec.\n");
489                                         break;
490                                     default:
491                                         printf("Using unknown codec 0x%02x.\n", negotiated_codec);
492                                         break;
493                                 }
494                                 sco_demo_set_codec(negotiated_codec);
495                                 hci_request_sco_can_send_now_event();
496                             }
497                             break;
498                         case HFP_SUBEVENT_AUDIO_CONNECTION_RELEASED:
499                             sco_handle = HCI_CON_HANDLE_INVALID;
500                             printf("Audio connection released\n");
501                             sco_demo_close();
502                             break;
503                         case HFP_SUBEVENT_COMPLETE:
504                             status = hfp_subevent_complete_get_status(event);
505                             if (status == ERROR_CODE_SUCCESS){
506                                 printf("Cmd \'%c\' succeded\n", cmd);
507                             } else {
508                                 printf("Cmd \'%c\' failed with status 0x%02x\n", cmd, hfp_subevent_complete_get_status(event));
509                             }
510                             break;
511                         case HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED:
512                             printf("AG_INDICATOR_STATUS_CHANGED, AG indicator (index: %d) to: %d of range [%d, %d], name '%s'\n",
513                                 hfp_subevent_ag_indicator_status_changed_get_indicator_index(event),
514                                 hfp_subevent_ag_indicator_status_changed_get_indicator_status(event),
515                                 hfp_subevent_ag_indicator_status_changed_get_indicator_min_range(event),
516                                 hfp_subevent_ag_indicator_status_changed_get_indicator_max_range(event),
517                                 (const char*) hfp_subevent_ag_indicator_status_changed_get_indicator_name(event));
518                             break;
519                         case HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED:
520                             printf("NETWORK_OPERATOR_CHANGED, operator mode: %d, format: %d, name: %s\n",
521                                 hfp_subevent_network_operator_changed_get_network_operator_mode(event),
522                                 hfp_subevent_network_operator_changed_get_network_operator_format(event),
523                                 (char *) hfp_subevent_network_operator_changed_get_network_operator_name(event));
524                             break;
525                         case HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR:
526                             printf("EXTENDED_AUDIO_GATEWAY_ERROR_REPORT, status : %d\n",
527                                 hfp_subevent_extended_audio_gateway_error_get_error(event));
528                             break;
529                         case HFP_SUBEVENT_RING:
530                             printf("** Ring **\n");
531                             break;
532                         case HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG:
533                             printf("Phone number for voice tag: %s\n",
534                                 (const char *) hfp_subevent_number_for_voice_tag_get_number(event));
535                             break;
536                         case HFP_SUBEVENT_SPEAKER_VOLUME:
537                             printf("Speaker volume: gain %u\n",
538                                 hfp_subevent_speaker_volume_get_gain(event));
539                             break;
540                         case HFP_SUBEVENT_MICROPHONE_VOLUME:
541                             printf("Microphone volume: gain %u\n",
542                                 hfp_subevent_microphone_volume_get_gain(event));
543                             break;
544                         case HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION:
545                             printf("Caller ID, number %s\n", hfp_subevent_calling_line_identification_notification_get_number(event));
546                             break;
547                         case HFP_SUBEVENT_ENHANCED_CALL_STATUS:
548                             printf("Enhanced call status:\n");
549                             printf("  - call index: %d \n", hfp_subevent_enhanced_call_status_get_clcc_idx(event));
550                             printf("  - direction : %s \n", hfp_enhanced_call_dir2str(hfp_subevent_enhanced_call_status_get_clcc_dir(event)));
551                             printf("  - status    : %s \n", hfp_enhanced_call_status2str(hfp_subevent_enhanced_call_status_get_clcc_status(event)));
552                             printf("  - mode      : %s \n", hfp_enhanced_call_mode2str(hfp_subevent_enhanced_call_status_get_clcc_mode(event)));
553                             printf("  - multipart : %s \n", hfp_enhanced_call_mpty2str(hfp_subevent_enhanced_call_status_get_clcc_mpty(event)));
554                             printf("  - type      : %d \n", hfp_subevent_enhanced_call_status_get_bnip_type(event));
555                             printf("  - number    : %s \n", hfp_subevent_enhanced_call_status_get_bnip_number(event));
556                             break;
557                         default:
558                             printf("event not handled 0x%02x\n", event[2]);
559                             break;
560                     }
561                     break;
562 
563                 default:
564                     break;
565             }
566             break;
567 
568         default:
569             break;
570     }
571 
572 }
573 
574 /* @section Main Application Setup
575  *
576  * @text Listing MainConfiguration shows main application code.
577  * To run a HFP HF service you need to initialize the SDP, and to create and register HFP HF record with it.
578  * The packet_handler is used for sending commands to the HFP AG. It also receives the HFP AG's answers.
579  * The stdin_process callback allows for sending commands to the HFP AG.
580  * At the end the Bluetooth stack is started.
581  */
582 
583 /* LISTING_START(MainConfiguration): Setup HFP Hands-Free unit */
584 int btstack_main(int argc, const char * argv[]);
585 int btstack_main(int argc, const char * argv[]){
586     (void)argc;
587     (void)argv;
588 
589     sco_demo_init();
590 
591     gap_discoverable_control(1);
592     gap_set_class_of_device(0x200408);
593     gap_set_local_name("HFP HF Demo 00:00:00:00:00:00");
594 
595     // init L2CAP
596     l2cap_init();
597 
598     uint16_t hf_supported_features          =
599         (1<<HFP_HFSF_ESCO_S4)               |
600         (1<<HFP_HFSF_CLI_PRESENTATION_CAPABILITY) |
601         (1<<HFP_HFSF_HF_INDICATORS)         |
602         (1<<HFP_HFSF_CODEC_NEGOTIATION)     |
603         (1<<HFP_HFSF_ENHANCED_CALL_STATUS)  |
604         (1<<HFP_HFSF_REMOTE_VOLUME_CONTROL);
605     int wide_band_speech = 1;
606 
607     rfcomm_init();
608     hfp_hf_init(rfcomm_channel_nr);
609     hfp_hf_init_supported_features(hf_supported_features);
610     hfp_hf_init_hf_indicators(sizeof(indicators)/sizeof(uint16_t), indicators);
611     hfp_hf_init_codecs(sizeof(codecs), codecs);
612 
613     sdp_init();
614     memset(hfp_service_buffer, 0, sizeof(hfp_service_buffer));
615     hfp_hf_create_sdp_record(hfp_service_buffer, 0x10001, rfcomm_channel_nr, hfp_hf_service_name, hf_supported_features, wide_band_speech);
616     printf("SDP service record size: %u\n", de_get_len(hfp_service_buffer));
617     sdp_register_service(hfp_service_buffer);
618 
619     // register for HCI events and SCO packets
620     hci_event_callback_registration.callback = &packet_handler;
621     hci_add_event_handler(&hci_event_callback_registration);
622     hci_register_sco_packet_handler(&packet_handler);
623     hci_register_sco_packet_handler(&packet_handler);
624 
625     // register for HFP events
626     hfp_hf_register_packet_handler(packet_handler);
627 
628 #ifdef HAVE_BTSTACK_STDIN
629     // parse human readable Bluetooth address
630     sscanf_bd_addr(device_addr_string, device_addr);
631     btstack_stdin_setup(stdin_process);
632 #endif
633     // turn on!
634     hci_power_control(HCI_POWER_ON);
635     return 0;
636 }
637 /* LISTING_END */
638 /* EXAMPLE_END */
639