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example/hf_hf_demo: improve documentation, split packet handlers, use sdp record handle generator

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This commit is contained in:
Matthias Ringwald 2023-02-09 10:03:38 +01:00
parent 08c12c8116
commit ec61dcfbed
1 changed files with 76 additions and 23 deletions
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99
example/hfp_hf_demo.c
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@ -449,7 +449,49 @@ static void stdin_process(char c){
}
#endif
static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t * event, uint16_t event_size){
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;
@ -683,20 +725,17 @@ int btstack_main(int argc, const char * argv[]){
(void)argc;
(void)argv;
sco_demo_init();
gap_discoverable_control(1);
gap_set_class_of_device(0x200408);
gap_set_local_name("HFP HF Demo 00:00:00:00:00:00");
// 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) |
@ -709,42 +748,56 @@ int btstack_main(int argc, const char * argv[]){
(1<<HFP_HFSF_EC_NR_FUNCTION) |
(1<<HFP_HFSF_REMOTE_VOLUME_CONTROL);
int wide_band_speech = 1;
rfcomm_init();
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);
sdp_init();
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(hfp_service_buffer, 0x10001, rfcomm_channel_nr, hfp_hf_service_name, hf_supported_features, wide_band_speech);
hfp_hf_create_sdp_record(hfp_service_buffer, sdp_create_service_record_handle(),
rfcomm_channel_nr, hfp_hf_service_name, hf_supported_features, wide_band_speech);
printf("SDP service record size: %u\n", de_get_len(hfp_service_buffer));
sdp_register_service(hfp_service_buffer);
// register for HCI events and SCO packets
hci_event_callback_registration.callback = &packet_handler;
hci_add_event_handler(&hci_event_callback_registration);
hci_register_sco_packet_handler(&packet_handler);
hci_register_sco_packet_handler(&packet_handler);
// Configure GAP - discovery / connection
// Service Class: Audio, Major Device Class: Audio, Minor: Hands-Free device
// - 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
// - 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
// - 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 HFP events
hfp_hf_register_packet_handler(packet_handler);
// 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;