/*

* Copyright (C) 2014 BlueKitchen GmbH

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

*

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

* 3. Neither the name of the copyright holders nor the names of

* contributors may be used to endorse or promote products derived

* from this software without specific prior written permission.

* 4. Any redistribution, use, or modification is done solely for

* personal benefit and not for any commercial purpose or for

* monetary gain.

*

* THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS

* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN

* GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,

* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,

* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS

* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF

* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

* SUCH DAMAGE.

*

* Please inquire about commercial licensing options at

* contact@bluekitchen-gmbh.com

*

*/

#define BTSTACK_FILE__ "hfp_hf_demo.c"

/*

* hfp_hs_demo.c

*/

// *****************************************************************************

/* EXAMPLE_START(hfp_hs_demo): HFP HF - Hands-Free

*

* @text This HFP Hands-Free example demonstrates how to receive

* an output from a remote HFP audio gateway (AG), and,

* if HAVE_BTSTACK_STDIN is defined, how to control the HFP AG.

*/

// *****************************************************************************

#include "btstack_config.h"

#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include "btstack.h"

#include "sco_demo_util.h"

uint8_t hfp_service_buffer[150];

const uint8_t rfcomm_channel_nr = 1;

const char hfp_hf_service_name[] = "HFP HF Demo";

#ifdef HAVE_BTSTACK_STDIN

// static const char * device_addr_string = "6C:72:E7:10:22:EE";

static const char * device_addr_string = "00:02:72:DC:31:C1";

#endif

static bd_addr_t device_addr;

#ifdef HAVE_BTSTACK_STDIN

// 80:BE:05:D5:28:48

// prototypes

static void show_usage(void);

#endif

static hci_con_handle_t acl_handle = HCI_CON_HANDLE_INVALID;

static hci_con_handle_t sco_handle = HCI_CON_HANDLE_INVALID;

static uint8_t codecs[] = {

HFP_CODEC_CVSD,

#ifdef ENABLE_HFP_WIDE_BAND_SPEECH

HFP_CODEC_MSBC,

#endif

#ifdef ENABLE_HFP_SUPER_WIDE_BAND_SPEECH

HFP_CODEC_LC3_SWB,

#endif

};

static uint16_t indicators[1] = {0x01};

static uint8_t negotiated_codec = HFP_CODEC_CVSD;

static btstack_packet_callback_registration_t hci_event_callback_registration;

static char cmd;

static void dump_supported_codecs(void){

printf("Supported codecs: CVSD");

if (hci_extended_sco_link_supported()) {

#ifdef ENABLE_HFP_WIDE_BAND_SPEECH

printf(", mSBC");

#endif

#ifdef ENABLE_HFP_SUPER_WIDE_BAND_SPEECH

printf(", LC3-SWB");

#endif

printf("\n");

} else {

printf("\nmSBC and/or LC3-SWB disabled as eSCO not supported by local controller.\n");

}

}

static void report_status(uint8_t status, const char * message){

if (status != ERROR_CODE_SUCCESS){

printf("%s command failed, status 0x%02x\n", message, status);

} else {

printf("%s command successful\n", message);

}

}

#ifdef HAVE_BTSTACK_STDIN

// Testig User Interface

static void show_usage(void){

bd_addr_t iut_address;

gap_local_bd_addr(iut_address);

printf("\n--- Bluetooth HFP Hands-Free (HF) unit Test Console %s ---\n", bd_addr_to_str(iut_address));

printf("\n");

printf("a - establish SLC to %s | ", bd_addr_to_str(device_addr));

printf("A - release SLC connection to device\n");

printf("b - establish Audio connection | B - release Audio connection\n");

printf("d - query network operator | D - Enable HFP AG registration status update via bitmap(IIA)\n");

printf("f - answer incoming call | F - Hangup call\n");

printf("g - query network operator name | G - reject incoming call\n");

printf("i - dial 1234567 | I - dial 7654321\n");

printf("j - dial #1 | J - dial #99\n");

printf("o - Set speaker volume to 0 (minimum) | O - Set speaker volume to 9 (default)\n");

printf("p - Set speaker volume to 12 (higher) | P - Set speaker volume to 15 (maximum)\n");

printf("q - Set microphone gain to 0 (minimum) | Q - Set microphone gain to 9 (default)\n");

printf("s - Set microphone gain to 12 (higher) | S - Set microphone gain to 15 (maximum)\n");

printf("t - terminate connection\n");

printf("u - send 'user busy' (TWC 0)\n");

printf("U - end active call and accept other call' (TWC 1)\n");

printf("v - Swap active call call (TWC 2) | V - Join held call (TWC 3)\n");

printf("w - Connect calls (TWC 4) | W - redial\n");

printf("m - deactivate echo canceling and noise reduction\n");

printf("c/C - disable/enable registration status update for all AG indicators\n");

printf("e/E - disable/enable reporting of the extended AG error result code\n");

printf("k/K - deactivate/activate call waiting notification\n");

printf("l/L - deactivate/activate calling line notification\n");

printf("n/N - deactivate/activate voice recognition\n");

printf("0123456789#*-+ - send DTMF dial tones\n");

printf("x - request phone number for voice tag | X - current call status (ECS)\n");

printf("y - release call with index 2 (ECC) | Y - private consultation with call 2(ECC)\n");

printf("[ - Query Response and Hold status (RHH ?) | ] - Place call in a response and held state(RHH 0)\n");

printf("{ - Accept held call(RHH 1) | } - Reject held call(RHH 2)\n");

printf("? - Query Subscriber Number (NUM)\n");

printf("! - Update HF indicator with assigned number 1 (HFI)\n");

printf("\n");

}

static void stdin_process(char c){

uint8_t status = ERROR_CODE_SUCCESS;

cmd = c; // used in packet handler

if (cmd >= '0' && cmd <= '9'){

printf("DTMF Code: %c\n", cmd);

status = hfp_hf_send_dtmf_code(acl_handle, cmd);

return;

}

switch (cmd){

case '#':

case '-':

case '+':

case '*':

log_info("USER:\'%c\'", cmd);

printf("DTMF Code: %c\n", cmd);

status = hfp_hf_send_dtmf_code(acl_handle, cmd);

break;

case 'a':

log_info("USER:\'%c\'", cmd);

printf("Establish Service level connection to device with Bluetooth address %s...\n", bd_addr_to_str(device_addr));

status = hfp_hf_establish_service_level_connection(device_addr);

break;

case 'A':

log_info("USER:\'%c\'", cmd);

printf("Release Service level connection.\n");

status = hfp_hf_release_service_level_connection(acl_handle);

break;

case 'b':

log_info("USER:\'%c\'", cmd);

printf("Establish Audio connection to device with Bluetooth address %s...\n", bd_addr_to_str(device_addr));

status = hfp_hf_establish_audio_connection(acl_handle);

break;

case 'B':

log_info("USER:\'%c\'", cmd);

printf("Release Audio service level connection.\n");

status = hfp_hf_release_audio_connection(acl_handle);

break;

case 'C':

log_info("USER:\'%c\'", cmd);

printf("Enable registration status update for all AG indicators.\n");

status = hfp_hf_enable_status_update_for_all_ag_indicators(acl_handle);

break;

case 'c':

log_info("USER:\'%c\'", cmd);

printf("Disable registration status update for all AG indicators.\n");

status = hfp_hf_disable_status_update_for_all_ag_indicators(acl_handle);

break;

case 'D':

log_info("USER:\'%c\'", cmd);

printf("Set HFP AG registration status update for individual indicators (0111111).\n");

status = hfp_hf_set_status_update_for_individual_ag_indicators(acl_handle, 63);

break;

case 'd':

log_info("USER:\'%c\'", cmd);

printf("Query network operator.\n");

status = hfp_hf_query_operator_selection(acl_handle);

break;

case 'E':

log_info("USER:\'%c\'", cmd);

printf("Enable reporting of the extended AG error result code.\n");

status = hfp_hf_enable_report_extended_audio_gateway_error_result_code(acl_handle);

break;

case 'e':

log_info("USER:\'%c\'", cmd);

printf("Disable reporting of the extended AG error result code.\n");

status = hfp_hf_disable_report_extended_audio_gateway_error_result_code(acl_handle);

break;

case 'f':

log_info("USER:\'%c\'", cmd);

printf("Answer incoming call.\n");

status = hfp_hf_answer_incoming_call(acl_handle);

break;

case 'F':

log_info("USER:\'%c\'", cmd);

printf("Hangup call.\n");

status = hfp_hf_terminate_call(acl_handle);

break;

case 'G':

log_info("USER:\'%c\'", cmd);

printf("Reject incoming call.\n");

status = hfp_hf_reject_incoming_call(acl_handle);

break;

case 'g':

log_info("USER:\'%c\'", cmd);

printf("Query operator.\n");

status = hfp_hf_query_operator_selection(acl_handle);

break;

case 't':

log_info("USER:\'%c\'", cmd);

printf("Terminate HCI connection.\n");

gap_disconnect(acl_handle);

break;

case 'i':

log_info("USER:\'%c\'", cmd);

printf("Dial 1234567\n");

status = hfp_hf_dial_number(acl_handle, "1234567");

break;

case 'I':

log_info("USER:\'%c\'", cmd);

printf("Dial 7654321\n");

status = hfp_hf_dial_number(acl_handle, "7654321");

break;

case 'j':

log_info("USER:\'%c\'", cmd);

printf("Dial #1\n");

status = hfp_hf_dial_memory(acl_handle,1);

break;

case 'J':

log_info("USER:\'%c\'", cmd);

printf("Dial #99\n");

status = hfp_hf_dial_memory(acl_handle,99);

break;

case 'k':

log_info("USER:\'%c\'", cmd);

printf("Deactivate call waiting notification\n");

status = hfp_hf_deactivate_call_waiting_notification(acl_handle);

break;

case 'K':

log_info("USER:\'%c\'", cmd);

printf("Activate call waiting notification\n");

status = hfp_hf_activate_call_waiting_notification(acl_handle);

break;

case 'l':

log_info("USER:\'%c\'", cmd);

printf("Deactivate calling line notification\n");

status = hfp_hf_deactivate_calling_line_notification(acl_handle);

break;

case 'L':

log_info("USER:\'%c\'", cmd);

printf("Activate calling line notification\n");

status = hfp_hf_activate_calling_line_notification(acl_handle);

break;

case 'm':

log_info("USER:\'%c\'", cmd);

printf("Deactivate echo canceling and noise reduction\n");

status = hfp_hf_deactivate_echo_canceling_and_noise_reduction(acl_handle);

break;

case 'n':

log_info("USER:\'%c\'", cmd);

printf("Deactivate voice recognition\n");

status = hfp_hf_deactivate_voice_recognition(acl_handle);

break;

case 'N':

log_info("USER:\'%c\'", cmd);

printf("Activate voice recognition %s\n", bd_addr_to_str(device_addr));

status = hfp_hf_activate_voice_recognition(acl_handle);

break;

case 'o':

log_info("USER:\'%c\'", cmd);

printf("Set speaker gain to 0 (minimum)\n");

status = hfp_hf_set_speaker_gain(acl_handle, 0);

break;

case 'O':

log_info("USER:\'%c\'", cmd);

printf("Set speaker gain to 9 (default)\n");

status = hfp_hf_set_speaker_gain(acl_handle, 9);

break;

case 'p':

log_info("USER:\'%c\'", cmd);

printf("Set speaker gain to 12 (higher)\n");

status = hfp_hf_set_speaker_gain(acl_handle, 12);

break;

case 'P':

log_info("USER:\'%c\'", cmd);

printf("Set speaker gain to 15 (maximum)\n");

status = hfp_hf_set_speaker_gain(acl_handle, 15);

break;

case 'q':

log_info("USER:\'%c\'", cmd);

printf("Set microphone gain to 0\n");

status = hfp_hf_set_microphone_gain(acl_handle, 0);

break;

case 'Q':

log_info("USER:\'%c\'", cmd);

printf("Set microphone gain to 9\n");

status = hfp_hf_set_microphone_gain(acl_handle, 9);

break;

case 's':

log_info("USER:\'%c\'", cmd);

printf("Set microphone gain to 12\n");

status = hfp_hf_set_microphone_gain(acl_handle, 12);

break;

case 'S':

log_info("USER:\'%c\'", cmd);

printf("Set microphone gain to 15\n");

status = hfp_hf_set_microphone_gain(acl_handle, 15);

break;

case 'u':

log_info("USER:\'%c\'", cmd);

printf("Send 'user busy' (Three-Way Call 0)\n");

status = hfp_hf_user_busy(acl_handle);

break;

case 'U':

log_info("USER:\'%c\'", cmd);

printf("End active call and accept waiting/held call (Three-Way Call 1)\n");

status = hfp_hf_end_active_and_accept_other(acl_handle);

break;

case 'v':

log_info("USER:\'%c\'", cmd);

printf("Swap active call and hold/waiting call (Three-Way Call 2)\n");

status = hfp_hf_swap_calls(acl_handle);

break;

case 'V':

log_info("USER:\'%c\'", cmd);

printf("Join hold call (Three-Way Call 3)\n");

status = hfp_hf_join_held_call(acl_handle);

break;

case 'w':

log_info("USER:\'%c\'", cmd);

printf("Connect calls (Three-Way Call 4)\n");

status = hfp_hf_connect_calls(acl_handle);

break;

case 'W':

log_info("USER:\'%c\'", cmd);

printf("Redial\n");

status = hfp_hf_redial_last_number(acl_handle);

break;

case 'x':

log_info("USER:\'%c\'", cmd);

printf("Request phone number for voice tag\n");

status = hfp_hf_request_phone_number_for_voice_tag(acl_handle);

break;

case 'X':

log_info("USER:\'%c\'", cmd);

printf("Query current call status\n");

status = hfp_hf_query_current_call_status(acl_handle);

break;

case 'y':

log_info("USER:\'%c\'", cmd);

printf("Release call with index 2\n");

status = hfp_hf_release_call_with_index(acl_handle, 2);

break;

case 'Y':

log_info("USER:\'%c\'", cmd);

printf("Private consultation with call 2\n");

status = hfp_hf_private_consultation_with_call(acl_handle, 2);

break;

case '[':

log_info("USER:\'%c\'", cmd);

printf("Query Response and Hold status (RHH ?)\n");

status = hfp_hf_rrh_query_status(acl_handle);

break;

case ']':

log_info("USER:\'%c\'", cmd);

printf("Place call in a response and held state (RHH 0)\n");

status = hfp_hf_rrh_hold_call(acl_handle);

break;

case '{':

log_info("USER:\'%c\'", cmd);

printf("Accept held call (RHH 1)\n");

status = hfp_hf_rrh_accept_held_call(acl_handle);

break;

case '}':

log_info("USER:\'%c\'", cmd);

printf("Reject held call (RHH 2)\n");

status = hfp_hf_rrh_reject_held_call(acl_handle);

break;

case '?':

log_info("USER:\'%c\'", cmd);

printf("Query Subscriber Number\n");

status = hfp_hf_query_subscriber_number(acl_handle);

break;

case '!':

log_info("USER:\'%c\'", cmd);

printf("Update HF indicator with assigned number 1 (HFI)\n");

status = hfp_hf_set_hf_indicator(acl_handle, 1, 1);

break;

default:

show_usage();

break;

}

if (status != ERROR_CODE_SUCCESS){

printf("Could not perform command, status 0x%02x\n", status);

}

}

#endif

static void hci_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){

UNUSED(channel);

bd_addr_t event_addr;

switch (packet_type){

case HCI_SCO_DATA_PACKET:

// forward received SCO / audio packets to SCO component

if (READ_SCO_CONNECTION_HANDLE(event) != sco_handle) break;

sco_demo_receive(event, event_size);

break;

case HCI_EVENT_PACKET:

switch (hci_event_packet_get_type(event)){

case BTSTACK_EVENT_STATE:

// list supported codecs after stack has started up

if (btstack_event_state_get_state(event) != HCI_STATE_WORKING) break;

dump_supported_codecs();

break;

case HCI_EVENT_PIN_CODE_REQUEST:

// inform about pin code request and respond with '0000'

printf("Pin code request - using '0000'\n");

hci_event_pin_code_request_get_bd_addr(event, event_addr);

gap_pin_code_response(event_addr, "0000");

break;

case HCI_EVENT_SCO_CAN_SEND_NOW:

sco_demo_send(sco_handle);

break;

default:

break;

}

break;

default:

break;

}

}

static void hfp_hf_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){

UNUSED(channel);

uint8_t status;

bd_addr_t event_addr;

switch (packet_type){

case HCI_SCO_DATA_PACKET:

if (READ_SCO_CONNECTION_HANDLE(event) != sco_handle) break;

sco_demo_receive(event, event_size);

break;

case HCI_EVENT_PACKET:

switch (hci_event_packet_get_type(event)){

case BTSTACK_EVENT_STATE:

if (btstack_event_state_get_state(event) != HCI_STATE_WORKING) break;

dump_supported_codecs();

break;

case HCI_EVENT_PIN_CODE_REQUEST:

// inform about pin code request

printf("Pin code request - using '0000'\n");

hci_event_pin_code_request_get_bd_addr(event, event_addr);

gap_pin_code_response(event_addr, "0000");

break;

case HCI_EVENT_SCO_CAN_SEND_NOW:

sco_demo_send(sco_handle);

break;

case HCI_EVENT_HFP_META:

switch (hci_event_hfp_meta_get_subevent_code(event)) {

case HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED:

status = hfp_subevent_service_level_connection_established_get_status(event);

if (status != ERROR_CODE_SUCCESS){

printf("Connection failed, status 0x%02x\n", status);

break;

}

acl_handle = hfp_subevent_service_level_connection_established_get_acl_handle(event);

hfp_subevent_service_level_connection_established_get_bd_addr(event, device_addr);

printf("Service level connection established %s.\n\n", bd_addr_to_str(device_addr));

break;

case HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_RELEASED:

acl_handle = HCI_CON_HANDLE_INVALID;

printf("Service level connection released.\n\n");

break;

case HFP_SUBEVENT_AUDIO_CONNECTION_ESTABLISHED:

status = hfp_subevent_audio_connection_established_get_status(event);

if (status != ERROR_CODE_SUCCESS){

printf("Audio connection establishment failed with status 0x%02x\n", status);

break;

}

sco_handle = hfp_subevent_audio_connection_established_get_sco_handle(event);

printf("Audio connection established with SCO handle 0x%04x.\n", sco_handle);

negotiated_codec = hfp_subevent_audio_connection_established_get_negotiated_codec(event);

switch (negotiated_codec){

case HFP_CODEC_CVSD:

printf("Using CVSD codec.\n");

break;

case HFP_CODEC_MSBC:

printf("Using mSBC codec.\n");

break;

case HFP_CODEC_LC3_SWB:

printf("Using LC3-SWB codec.\n");

break;

default:

printf("Using unknown codec 0x%02x.\n", negotiated_codec);

break;

}

sco_demo_set_codec(negotiated_codec);

hci_request_sco_can_send_now_event();

break;

case HFP_SUBEVENT_CALL_ANSWERED:

printf("Call answered\n");

break;

case HFP_SUBEVENT_CALL_TERMINATED:

printf("Call terminated\n");

break;

case HFP_SUBEVENT_AUDIO_CONNECTION_RELEASED:

sco_handle = HCI_CON_HANDLE_INVALID;

printf("Audio connection released\n");

sco_demo_close();

break;

case HFP_SUBEVENT_COMPLETE:

status = hfp_subevent_complete_get_status(event);

if (status == ERROR_CODE_SUCCESS){

printf("Cmd \'%c\' succeeded\n", cmd);

} else {

printf("Cmd \'%c\' failed with status 0x%02x\n", cmd, status);

}

break;

case HFP_SUBEVENT_AG_INDICATOR_MAPPING:

printf("AG Indicator Mapping | INDEX %d: range [%d, %d], name '%s'\n",

hfp_subevent_ag_indicator_mapping_get_indicator_index(event),

hfp_subevent_ag_indicator_mapping_get_indicator_min_range(event),

hfp_subevent_ag_indicator_mapping_get_indicator_max_range(event),

(const char*) hfp_subevent_ag_indicator_mapping_get_indicator_name(event));

break;

case HFP_SUBEVENT_AG_INDICATOR_STATUS_CHANGED:

printf("AG Indicator Status | INDEX %d: status 0x%02x, '%s'\n",

hfp_subevent_ag_indicator_status_changed_get_indicator_index(event),

hfp_subevent_ag_indicator_status_changed_get_indicator_status(event),

(const char*) hfp_subevent_ag_indicator_status_changed_get_indicator_name(event));

break;

case HFP_SUBEVENT_NETWORK_OPERATOR_CHANGED:

printf("NETWORK_OPERATOR_CHANGED, operator mode %d, format %d, name %s\n",

hfp_subevent_network_operator_changed_get_network_operator_mode(event),

hfp_subevent_network_operator_changed_get_network_operator_format(event),

(char *) hfp_subevent_network_operator_changed_get_network_operator_name(event));

break;

case HFP_SUBEVENT_EXTENDED_AUDIO_GATEWAY_ERROR:

printf("EXTENDED_AUDIO_GATEWAY_ERROR_REPORT, status 0x%02x\n",

hfp_subevent_extended_audio_gateway_error_get_error(event));

break;

case HFP_SUBEVENT_START_RINGING:

printf("** START Ringing **\n");

break;

case HFP_SUBEVENT_RING:

printf("** Ring **\n");

break;

case HFP_SUBEVENT_STOP_RINGING:

printf("** STOP Ringing **\n");

break;

case HFP_SUBEVENT_NUMBER_FOR_VOICE_TAG:

printf("Phone number for voice tag: %s\n",

(const char *) hfp_subevent_number_for_voice_tag_get_number(event));

break;

case HFP_SUBEVENT_SPEAKER_VOLUME:

printf("Speaker volume: gain %u\n",

hfp_subevent_speaker_volume_get_gain(event));

break;

case HFP_SUBEVENT_MICROPHONE_VOLUME:

printf("Microphone volume: gain %u\n",

hfp_subevent_microphone_volume_get_gain(event));

break;

case HFP_SUBEVENT_CALLING_LINE_IDENTIFICATION_NOTIFICATION:

printf("Caller ID, number '%s', alpha '%s'\n", (const char *) hfp_subevent_calling_line_identification_notification_get_number(event),

(const char *) hfp_subevent_calling_line_identification_notification_get_alpha(event));

break;

case HFP_SUBEVENT_ENHANCED_CALL_STATUS:

printf("Enhanced call status:\n");

printf(" - call index: %d \n", hfp_subevent_enhanced_call_status_get_clcc_idx(event));

printf(" - direction : %s \n", hfp_enhanced_call_dir2str(hfp_subevent_enhanced_call_status_get_clcc_dir(event)));

printf(" - status : %s \n", hfp_enhanced_call_status2str(hfp_subevent_enhanced_call_status_get_clcc_status(event)));

printf(" - mode : %s \n", hfp_enhanced_call_mode2str(hfp_subevent_enhanced_call_status_get_clcc_mode(event)));

printf(" - multipart : %s \n", hfp_enhanced_call_mpty2str(hfp_subevent_enhanced_call_status_get_clcc_mpty(event)));

printf(" - type : %d \n", hfp_subevent_enhanced_call_status_get_bnip_type(event));

printf(" - number : %s \n", hfp_subevent_enhanced_call_status_get_bnip_number(event));

break;

case HFP_SUBEVENT_VOICE_RECOGNITION_ACTIVATED:

status = hfp_subevent_voice_recognition_activated_get_status(event);

if (status != ERROR_CODE_SUCCESS){

printf("Voice Recognition Activate command failed, status 0x%02x\n", status);

break;

}

switch (hfp_subevent_voice_recognition_activated_get_enhanced(event)){

case 0:

printf("\nVoice recognition ACTIVATED\n\n");

break;

default:

printf("\nEnhanced voice recognition ACTIVATED.\n");

printf("Start new audio enhanced voice recognition session %s\n\n", bd_addr_to_str(device_addr));

status = hfp_hf_enhanced_voice_recognition_report_ready_for_audio(acl_handle);

break;

}

break;

case HFP_SUBEVENT_VOICE_RECOGNITION_DEACTIVATED:

status = hfp_subevent_voice_recognition_deactivated_get_status(event);

if (status != ERROR_CODE_SUCCESS){

printf("Voice Recognition Deactivate command failed, status 0x%02x\n", status);

break;

}

printf("\nVoice Recognition DEACTIVATED\n\n");

break;

case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_HF_READY_FOR_AUDIO:

status = hfp_subevent_enhanced_voice_recognition_hf_ready_for_audio_get_status(event);

report_status(status, "Enhanced Voice recognition: READY FOR AUDIO");

break;

case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_READY_TO_ACCEPT_AUDIO_INPUT:

printf("\nEnhanced Voice recognition AG status: AG READY TO ACCEPT AUDIO INPUT\n\n");

break;

case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_IS_STARTING_SOUND:

printf("\nEnhanced Voice recognition AG status: AG IS STARTING SOUND\n\n");

break;

case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_IS_PROCESSING_AUDIO_INPUT:

printf("\nEnhanced Voice recognition AG status: AG IS PROCESSING AUDIO INPUT\n\n");

break;

case HFP_SUBEVENT_ENHANCED_VOICE_RECOGNITION_AG_MESSAGE:

printf("\nEnhanced Voice recognition AG message: \'%s\'\n", hfp_subevent_enhanced_voice_recognition_ag_message_get_text(event));

break;

case HFP_SUBEVENT_ECHO_CANCELING_AND_NOISE_REDUCTION_DEACTIVATE:

status = hfp_subevent_echo_canceling_and_noise_reduction_deactivate_get_status(event);

report_status(status, "Echo Canceling and Noise Reduction Deactivate");

break;

default:

break;

}

break;

default:

break;

}

break;

default:

break;

}

}

/* @section Main Application Setup

*

* @text Listing MainConfiguration shows main application code.

* To run a HFP HF service you need to initialize the SDP, and to create and register HFP HF record with it.

* The packet_handler is used for sending commands to the HFP AG. It also receives the HFP AG's answers.

* The stdin_process callback allows for sending commands to the HFP AG.

* At the end the Bluetooth stack is started.

*/

/* LISTING_START(MainConfiguration): Setup HFP Hands-Free unit */

int btstack_main(int argc, const char * argv[]);

int btstack_main(int argc, const char * argv[]){

(void)argc;

(void)argv;

// Init protocols

// init L2CAP

l2cap_init();

rfcomm_init();

sdp_init();

#ifdef ENABLE_BLE

// Initialize LE Security Manager. Needed for cross-transport key derivation

sm_init();

#endif

// Init profiles

uint16_t hf_supported_features =

(1<<HFP_HFSF_ESCO_S4) |

(1<<HFP_HFSF_CLI_PRESENTATION_CAPABILITY) |

(1<<HFP_HFSF_HF_INDICATORS) |

(1<<HFP_HFSF_CODEC_NEGOTIATION) |

(1<<HFP_HFSF_ENHANCED_CALL_STATUS) |

(1<<HFP_HFSF_VOICE_RECOGNITION_FUNCTION) |

(1<<HFP_HFSF_ENHANCED_VOICE_RECOGNITION_STATUS) |

(1<<HFP_HFSF_VOICE_RECOGNITION_TEXT) |

(1<<HFP_HFSF_EC_NR_FUNCTION) |

(1<<HFP_HFSF_REMOTE_VOLUME_CONTROL);

hfp_hf_init(rfcomm_channel_nr);

hfp_hf_init_supported_features(hf_supported_features);

hfp_hf_init_hf_indicators(sizeof(indicators)/sizeof(uint16_t), indicators);

hfp_hf_init_codecs(sizeof(codecs), codecs);

hfp_hf_register_packet_handler(hfp_hf_packet_handler);

// Configure SDP

// - Create and register HFP HF service record

memset(hfp_service_buffer, 0, sizeof(hfp_service_buffer));

hfp_hf_create_sdp_record_with_codecs(hfp_service_buffer, sdp_create_service_record_handle(),

rfcomm_channel_nr, hfp_hf_service_name, hf_supported_features, sizeof(codecs), codecs);

btstack_assert(de_get_len( hfp_service_buffer) <= sizeof(hfp_service_buffer));

sdp_register_service(hfp_service_buffer);

// Configure GAP - discovery / connection

// - Set local name with a template Bluetooth address, that will be automatically

// replaced with an actual address once it is available, i.e. when BTstack boots

// up and starts talking to a Bluetooth module.

gap_set_local_name("HFP HF Demo 00:00:00:00:00:00");

// - Allow to show up in Bluetooth inquiry

gap_discoverable_control(1);

// - Set Class of Device - Service Class: Audio, Major Device Class: Audio, Minor: Hands-Free device

gap_set_class_of_device(0x200408);

// - Allow for role switch in general and sniff mode

gap_set_default_link_policy_settings( LM_LINK_POLICY_ENABLE_ROLE_SWITCH | LM_LINK_POLICY_ENABLE_SNIFF_MODE );

// - Allow for role switch on outgoing connections - this allows HFP AG, e.g. smartphone, to become master when we re-connect to it

gap_set_allow_role_switch(true);

// Register for HCI events and SCO packets

hci_event_callback_registration.callback = &hci_packet_handler;

hci_add_event_handler(&hci_event_callback_registration);

hci_register_sco_packet_handler(&hci_packet_handler);

// Init SCO / HFP audio processing

sco_demo_init();

#ifdef HAVE_BTSTACK_STDIN

// parse human readable Bluetooth address

sscanf_bd_addr(device_addr_string, device_addr);

btstack_stdin_setup(stdin_process);

#endif

// turn on!

hci_power_control(HCI_POWER_ON);

return 0;

}

/* LISTING_END */

/* EXAMPLE_END */