static void packet_handler(void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
// printf("packet_handler type %u, packet[0] %x\n", packet_type, packet[0]);
if (packet_type == RFCOMM_DATA_PACKET){
hfp_service_level_connection_state++;
if (rfcomm_can_send_packet_now(rfcomm_cid)) send_packet();
return;
}
if (packet_type != HCI_EVENT_PACKET) return;
uint8_t event = packet[0];
bd_addr_t event_addr;
switch (event) {
case BTSTACK_EVENT_STATE:
// bt stack activated, get started
if (packet[2] == HCI_STATE_WORKING){
printf("Start SDP RFCOMM Query for UUID 0x%02x\n", SDP_Handsfree);
// sdp_query_rfcomm_channel_and_name_for_uuid(remote, SDP_Handsfree);
}
break;
case HCI_EVENT_PIN_CODE_REQUEST:
// inform about pin code request
printf("Pin code request - using '0000'\n\r");
bt_flip_addr(event_addr, &packet[2]);
hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000");
break;
case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
printf("RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE packet_handler type %u, packet[0] %x\n", packet_type, packet[0]);
// data: event(8), len(8), status (8), address (48), handle(16), server channel(8), rfcomm_cid(16), max frame size(16)
if (packet[2]) {
printf("RFCOMM channel open failed, status %u\n", packet[2]);
} else {
// data: event(8), len(8), status (8), address (48), handle (16), server channel(8), rfcomm_cid(16), max frame size(16)
rfcomm_cid = READ_BT_16(packet, 12);
mtu = READ_BT_16(packet, 14);
printf("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n", rfcomm_cid, mtu);
break;
}
break;
case DAEMON_EVENT_HCI_PACKET_SENT:
case RFCOMM_EVENT_CREDITS:
if (!rfcomm_cid) break;
if (rfcomm_can_send_packet_now(rfcomm_cid)) send_packet();
break;
default:
break;
}
}
static int hsp_hs_send_str_over_rfcomm(uint16_t cid, const char * command){
if (!rfcomm_can_send_packet_now(rfcomm_cid)) return 1;
int err = rfcomm_send(cid, (uint8_t*) command, strlen(command));
if (err){
log_info("rfcomm_send_internal -> error 0X%02x", err);
}
return err;
}
int send_str_over_rfcomm(uint16_t cid, char * command){
if (!rfcomm_can_send_packet_now(rfcomm_cid)) return 1;
int err = rfcomm_send_internal(cid, (uint8_t*) command, strlen(command));
if (err){
printf("rfcomm_send_internal -> error 0X%02x", err);
}
return err;
}
int send_str_over_rfcomm(uint16_t cid, char * command){
if (!rfcomm_can_send_packet_now(cid)) return 1;
int err = rfcomm_send_internal(cid, (uint8_t*) command, strlen(command));
if (err){
log_error("rfcomm_send_internal -> error 0x%02x \n", err);
}
return 1;
}
static int hsp_ag_send_str_over_rfcomm(uint16_t cid, char * command){
if (!rfcomm_can_send_packet_now(cid)) return 1;
int err = rfcomm_send_internal(cid, (uint8_t*) command, strlen(command));
if (err){
printf("rfcomm_send_internal -> error 0X%02x", err);
return err;
}
printf("Send string: \"%s\"\n", command);
return err;
}
static void hfp_run_for_context(hfp_connection_t *context){
if (!context) return;
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
if (context->command == HFP_CMD_UNKNOWN){
context->ok_pending = 0;
context->send_error = 0;
context->command = HFP_CMD_NONE;
hfp_ag_error(context->rfcomm_cid);
return;
}
if (context->ok_pending){
context->ok_pending = 0;
context->command = HFP_CMD_NONE;
hfp_ag_ok(context->rfcomm_cid);
return;
}
if (context->send_error){
context->send_error = 0;
context->command = HFP_CMD_NONE;
hfp_ag_error(context->rfcomm_cid);
return;
}
int done = hfp_ag_run_for_context_service_level_connection(context);
if (!done){
done = hfp_ag_run_for_context_service_level_connection_queries(context);
}
if (!done){
done = incoming_call_state_machine(context);
}
if (!done){
done = hfp_ag_run_for_audio_connection(context);
}
if (context->command == HFP_CMD_NONE && !done){
log_info("context->command == HFP_CMD_NONE");
switch(context->state){
case HFP_W2_DISCONNECT_RFCOMM:
context->state = HFP_W4_RFCOMM_DISCONNECTED;
rfcomm_disconnect_internal(context->rfcomm_cid);
break;
default:
break;
}
}
if (done){
context->command = HFP_CMD_NONE;
}
}
void hfp_run_for_context(hfp_connection_t *context){
if (!context) return;
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
// printf("AG hfp_run_for_context 1 state %d, command %d\n", context->state, context->command);
if (context->send_ok){
hfp_ag_ok(context->rfcomm_cid);
context->send_ok = 0;
return;
}
if (context->send_error){
hfp_ag_error(context->rfcomm_cid);
context->send_error = 0;
return;
}
int done;
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
hfp_ag_run_for_context_service_level_connection(context);
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
done = hfp_ag_run_for_context_service_level_connection_queries(context);
if (!rfcomm_can_send_packet_now(context->rfcomm_cid) || done) return;
done = hfp_ag_run_for_context_codecs_connection(context);
if (context->command == HFP_CMD_NONE){
switch(context->state){
case HFP_W2_DISCONNECT_RFCOMM:
// printf("rfcomm_disconnect_internal cid 0x%02x\n", context->rfcomm_cid);
context->state = HFP_W4_RFCOMM_DISCONNECTED;
rfcomm_disconnect_internal(context->rfcomm_cid);
break;
default:
break;
}
}
context->command = HFP_CMD_NONE;
}
static void packet_handler (void * connection, uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
// printf("packet_handler type %u, packet[0] %x\n", packet_type, packet[0]);
if (packet_type != HCI_EVENT_PACKET) return;
uint8_t event = packet[0];
switch (event) {
case BTSTACK_EVENT_STATE:
// bt stack activated, get started
if (packet[2] == HCI_STATE_WORKING){
sdp_query_rfcomm_channel_and_name_for_uuid(remote, SDP_PublicBrowseGroup);
}
break;
case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE:
// data: event(8), len(8), status (8), address (48), handle(16), server channel(8), rfcomm_cid(16), max frame size(16)
if (packet[2]) {
printf("RFCOMM channel open failed, status %u\n", packet[2]);
} else {
// data: event(8), len(8), status (8), address (48), handle (16), server channel(8), rfcomm_cid(16), max frame size(16)
rfcomm_cid = READ_BT_16(packet, 12);
mtu = READ_BT_16(packet, 14);
printf("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n", rfcomm_cid, mtu);
if ((test_data_len > mtu)) {
test_data_len = mtu;
}
if (rfcomm_can_send_packet_now(rfcomm_cid)) send_packet();
break;
}
break;
case DAEMON_EVENT_HCI_PACKET_SENT:
case RFCOMM_EVENT_CREDITS:
if (rfcomm_can_send_packet_now(rfcomm_cid)) send_packet();
break;
default:
break;
}
}
static void hfp_run_for_context(hfp_connection_t * connection){
if (!connection) return;
// printf("hfp send cmd: context %p, RFCOMM cid %u \n", connection, connection->rfcomm_cid );
if (!rfcomm_can_send_packet_now(connection->rfcomm_cid)) return;
switch (connection->state){
case HFP_EXCHANGE_SUPPORTED_FEATURES:
hfp_hs_exchange_supported_features_cmd(connection->rfcomm_cid);
connection->state = HFP_W4_EXCHANGE_SUPPORTED_FEATURES;
break;
case HFP_NOTIFY_ON_CODECS:
hfp_hs_retrieve_codec_cmd(connection->rfcomm_cid);
connection->state = HFP_W4_NOTIFY_ON_CODECS;
break;
case HFP_RETRIEVE_INDICATORS:
hfp_hs_retrieve_indicators_cmd(connection->rfcomm_cid);
connection->state = HFP_W4_RETRIEVE_INDICATORS;
break;
case HFP_RETRIEVE_INDICATORS_STATUS:
hfp_hs_retrieve_indicators_status_cmd(connection->rfcomm_cid);
connection->state = HFP_W4_RETRIEVE_INDICATORS_STATUS;
break;
case HFP_ENABLE_INDICATORS_STATUS_UPDATE:
hfp_hs_toggle_indicator_status_update_cmd(connection->rfcomm_cid, 1);
connection->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE;
break;
case HFP_RETRIEVE_CAN_HOLD_CALL:
hfp_hs_retrieve_can_hold_call_cmd(connection->rfcomm_cid);
connection->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL;
break;
case HFP_LIST_GENERIC_STATUS_INDICATORS:
hfp_hs_list_supported_generic_status_indicators_cmd(connection->rfcomm_cid);
connection->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS;
break;
case HFP_RETRIEVE_GENERIC_STATUS_INDICATORS:
hfp_hs_retrieve_supported_generic_status_indicators_cmd(connection->rfcomm_cid);
connection->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS;
break;
case HFP_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS:
hfp_hs_list_initital_supported_generic_status_indicators_cmd(connection->rfcomm_cid);
connection->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS;
break;
case HFP_ACTIVE:
printf("HFP_ACTIVE\n");
break;
default:
break;
}
}
void heartbeat_handler(struct timer *ts){
if (rfcomm_channel_id){
static int counter = 0;
char lineBuffer[30];
sprintf(lineBuffer, "BTstack counter %04u\n\r", ++counter);
puts(lineBuffer);
if (rfcomm_can_send_packet_now(rfcomm_channel_id)) {
int err = rfcomm_send_internal(rfcomm_channel_id, (uint8_t*) lineBuffer, strlen(lineBuffer));
if (err) printf("rfcomm_send_internal -> error 0X%02x", err);
}
}
run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS);
run_loop_add_timer(ts);
}
static void heartbeat_handler(struct btstack_timer_source *ts){
if (rfcomm_channel_id){
static int counter = 0;
char lineBuffer[30];
sprintf(lineBuffer, "BTstack counter %04u\n\r", ++counter);
printf(lineBuffer);
if (rfcomm_can_send_packet_now(rfcomm_channel_id)){
int err = rfcomm_send(rfcomm_channel_id, (uint8_t*) lineBuffer, strlen(lineBuffer));
if (err) {
printf("rfcomm_send -> error %d", err);
}
}
}
btstack_run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS);
btstack_run_loop_add_timer(ts);
}
/* LISTING_START(heartbeat): Combined Heartbeat handler */
static void heartbeat_handler(struct timer *ts){
counter++;
counter_string_len = sprintf(counter_string, "BTstack counter %04u\n", counter);
// printf("%s", counter_string);
if (rfcomm_channel_id){
if (rfcomm_can_send_packet_now(rfcomm_channel_id)){
int err = rfcomm_send_internal(rfcomm_channel_id, (uint8_t*) counter_string, counter_string_len);
if (err) {
log_error("rfcomm_send_internal -> error 0X%02x", err);
}
}
}
if (le_notification_enabled) {
att_server_notify(ATT_CHARACTERISTIC_0000FF11_0000_1000_8000_00805F9B34FB_01_VALUE_HANDLE, (uint8_t*) counter_string, counter_string_len);
}
run_loop_set_timer(ts, HEARTBEAT_PERIOD_MS);
run_loop_add_timer(ts);
}
static void hsp_run(void){
if (!rfcomm_can_send_packet_now(rfcomm_cid)) return;
if (wait_ok) return;
if (hsp_release_audio_connection){
hsp_release_audio_connection = 0;
wait_ok = 1;
hsp_hs_send_str_over_rfcomm(rfcomm_cid, HSP_HS_AT_CKPD);
return;
}
if (hsp_disconnect_rfcomm){
hsp_disconnect_rfcomm = 0;
hsp_establish_audio_connection = 0;
rfcomm_disconnect_internal(rfcomm_cid);
return;
}
if (hsp_establish_audio_connection){
hsp_establish_audio_connection = 0;
wait_ok = 1;
hsp_hs_send_str_over_rfcomm(rfcomm_cid, HSP_HS_AT_CKPD);
return;
}
if (hs_send_button_press){
hs_send_button_press = 0;
wait_ok = 1;
hsp_hs_send_str_over_rfcomm(rfcomm_cid, HSP_HS_AT_CKPD);
return;
}
switch (hsp_state){
case HSP_SDP_QUERY_RFCOMM_CHANNEL:
hsp_state = HSP_W4_SDP_QUERY_COMPLETE;
sdp_query_rfcomm_channel_and_name_for_uuid(remote, SDP_Headset_AG);
break;
case HSP_AUDIO_CONNECTION_ESTABLISHED:
case HSP_RFCOMM_CONNECTION_ESTABLISHED:
if (hs_microphone_gain >= 0){
char buffer[20];
sprintf(buffer, "%s=%d\r\n", HSP_HS_MICROPHONE_GAIN, hs_microphone_gain);
hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer);
hs_microphone_gain = -1;
break;
}
if (hs_speaker_gain >= 0){
char buffer[20];
sprintf(buffer, "%s=%d\r\n", HSP_HS_SPEAKER_GAIN, hs_speaker_gain);
hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer);
hs_speaker_gain = -1;
break;
}
break;
case HSP_W4_RFCOMM_DISCONNECTED:
rfcomm_disconnect_internal(rfcomm_cid);
break;
default:
break;
}
}
void hfp_run_for_context(hfp_connection_t *context) {
// printf(" hfp_run_for_context \n");
if (!context) return;
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
//printf(" hfp_run_for_context 1 state %d, command %d\n", context->state, context->command);
if (context->state == HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) {
if (context->send_ok) {
hfp_ag_ok(context->rfcomm_cid);
context->send_ok = 0;
return;
}
if (context->send_error) {
hfp_ag_error(context->rfcomm_cid);
context->send_error = 0;
return;
}
if (context->enable_status_update_for_ag_indicators) {
int i;
for (i = 0; i < context->ag_indicators_nr; i++) {
if (context->ag_indicators[i].enabled == 0) continue;
if (context->ag_indicators[i].status_changed == 0) continue;
hfp_ag_transfer_ag_indicators_status_cmd(context->rfcomm_cid, context->ag_indicators[i]);
context->ag_indicators[i].status_changed = 0;
return;
}
}
if (context->enable_extended_audio_gateway_error_report) {
if (context->extended_audio_gateway_error) {
hfp_ag_report_extended_audio_gateway_error(context->rfcomm_cid, context->extended_audio_gateway_error);
context->extended_audio_gateway_error = 0;
return;
}
}
}
if (context->state == HFP_AUDIO_CONNECTION_ESTABLISHED) {
// TODO
}
switch(context->command) {
// START codec setup
case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP:
if (!hfp_ag_choose_codec(context)) {
hfp_ag_error(context->rfcomm_cid);
break;
}
switch (context->state) {
case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED:
// hfp_ag_ok(context->rfcomm_cid);
context->negotiated_codec = hfp_ag_choose_codec(context);
hfp_ag_cmd_confirm_codec(context->rfcomm_cid, context->negotiated_codec);
context->state = HFP_SLE_W4_EXCHANGE_COMMON_CODEC;
break;
default:
hfp_ag_error(context->rfcomm_cid);
break;
}
break;
case HFP_CMD_CONFIRM_COMMON_CODEC:
hfp_ag_ok(context->rfcomm_cid);
context->state = HFP_CODECS_CONNECTION_ESTABLISHED;
break;
// END codec setup
case HFP_CMD_SUPPORTED_FEATURES:
switch(context->state) {
case HFP_W4_EXCHANGE_SUPPORTED_FEATURES:
hfp_ag_exchange_supported_features_cmd(context->rfcomm_cid);
if (has_codec_negotiation_feature(context)) {
context->state = HFP_W4_NOTIFY_ON_CODECS;
break;
}
context->state = HFP_W4_RETRIEVE_INDICATORS;
break;
default:
break;
}
break;
case HFP_CMD_AVAILABLE_CODECS:
switch(context->state) {
case HFP_W4_NOTIFY_ON_CODECS:
hfp_ag_retrieve_codec_cmd(context->rfcomm_cid);
context->state = HFP_W4_RETRIEVE_INDICATORS;
break;
default:
break;
}
break;
case HFP_CMD_INDICATOR:
switch(context->state) {
case HFP_W4_RETRIEVE_INDICATORS:
if (context->retrieve_ag_indicators == 0) break;
hfp_ag_retrieve_indicators_cmd(context->rfcomm_cid, context);
context->state = HFP_W4_RETRIEVE_INDICATORS_STATUS;
break;
case HFP_W4_RETRIEVE_INDICATORS_STATUS:
if (context->retrieve_ag_indicators_status == 0) break;
hfp_ag_retrieve_indicators_status_cmd(context->rfcomm_cid);
context->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE;
break;
default:
break;
}
break;
case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE:
switch(context->state) {
case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE:
hfp_ag_toggle_indicator_status_update_cmd(context->rfcomm_cid, 1);
if (has_call_waiting_and_3way_calling_feature(context)) {
context->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL;
break;
}
if (has_hf_indicators_feature(context)) {
context->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS;
break;
}
context->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED;
hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0);
break;
case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED:
// TODO
break;
default:
break;
}
break;
case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES:
switch(context->state) {
case HFP_W4_RETRIEVE_CAN_HOLD_CALL:
hfp_ag_retrieve_can_hold_call_cmd(context->rfcomm_cid);
if (has_hf_indicators_feature(context)) {
context->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS;
break;
}
context->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED;
hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0);
break;
default:
break;
}
break;
case HFP_CMD_GENERIC_STATUS_INDICATOR:
switch(context->state) {
case HFP_W4_LIST_GENERIC_STATUS_INDICATORS:
if (context->list_generic_status_indicators == 0) break;
hfp_ag_list_supported_generic_status_indicators_cmd(context->rfcomm_cid);
context->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS;
context->list_generic_status_indicators = 0;
break;
case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS:
if (context->retrieve_generic_status_indicators == 0) break;
hfp_ag_retrieve_supported_generic_status_indicators_cmd(context->rfcomm_cid);
context->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS;
context->retrieve_generic_status_indicators = 0;
break;
case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS:
if (context->retrieve_generic_status_indicators_state == 0) break;
hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(context->rfcomm_cid);
context->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED;
context->retrieve_generic_status_indicators_state = 0;
hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0);
break;
default:
break;
}
break;
case HFP_CMD_QUERY_OPERATOR_SELECTION:
if (context->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break;
if (context->operator_name_format == 1) {
if (context->network_operator.format != 0) {
hfp_ag_error(context->rfcomm_cid);
break;
}
hfp_ag_ok(context->rfcomm_cid);
context->operator_name_format = 0;
break;
}
if (context->operator_name == 1) {
hfp_ag_report_network_operator_name_cmd(context->rfcomm_cid, context->network_operator);
context->operator_name = 0;
break;
}
break;
case HFP_CMD_NONE:
switch(context->state) {
case HFP_W2_DISCONNECT_RFCOMM:
// printf("rfcomm_disconnect_internal cid 0x%02x\n", context->rfcomm_cid);
context->state = HFP_W4_RFCOMM_DISCONNECTED;
rfcomm_disconnect_internal(context->rfcomm_cid);
break;
default:
break;
}
break;
default:
break;
}
// done
context->command = HFP_CMD_NONE;
}
static void hsp_run(void){
if (wait_ok) return;
if (hs_accept_sco_connection && hci_can_send_command_packet_now()){
hs_accept_sco_connection = 0;
log_info("HSP: sending hci_accept_connection_request.");
// remote supported feature eSCO is set if link type is eSCO
// eSCO: S4 - max latency == transmission interval = 0x000c == 12 ms,
uint16_t max_latency;
uint8_t retransmission_effort;
uint16_t packet_types;
if (hci_remote_esco_supported(rfcomm_handle)){
max_latency = 0x000c;
retransmission_effort = 0x02;
packet_types = 0x388;
} else {
max_latency = 0xffff;
retransmission_effort = 0xff;
packet_types = 0x003f;
}
uint16_t sco_voice_setting = hci_get_sco_voice_setting();
log_info("HFP: sending hci_accept_connection_request, sco_voice_setting %02x", sco_voice_setting);
hci_send_cmd(&hci_accept_synchronous_connection, remote, 8000, 8000, max_latency,
sco_voice_setting, retransmission_effort, packet_types);
return;
}
if (hsp_release_audio_connection){
if (!rfcomm_can_send_packet_now(rfcomm_cid)) {
rfcomm_request_can_send_now_event(rfcomm_cid);
return;
}
hsp_release_audio_connection = 0;
wait_ok = 1;
hsp_hs_send_str_over_rfcomm(rfcomm_cid, HSP_HS_AT_CKPD);
return;
}
if (hsp_disconnect_rfcomm){
hsp_disconnect_rfcomm = 0;
hsp_establish_audio_connection = 0;
rfcomm_disconnect(rfcomm_cid);
return;
}
if (hsp_establish_audio_connection){
if (!rfcomm_can_send_packet_now(rfcomm_cid)) {
rfcomm_request_can_send_now_event(rfcomm_cid);
return;
}
hsp_establish_audio_connection = 0;
wait_ok = 1;
hsp_hs_send_str_over_rfcomm(rfcomm_cid, HSP_HS_AT_CKPD);
return;
}
if (hs_send_button_press){
if (!rfcomm_can_send_packet_now(rfcomm_cid)) {
rfcomm_request_can_send_now_event(rfcomm_cid);
return;
}
hs_send_button_press = 0;
wait_ok = 1;
hsp_hs_send_str_over_rfcomm(rfcomm_cid, HSP_HS_AT_CKPD);
return;
}
switch (hsp_state){
case HSP_SDP_QUERY_RFCOMM_CHANNEL:
hsp_state = HSP_W4_SDP_QUERY_COMPLETE;
sdp_client_query_rfcomm_channel_and_name_for_uuid(&handle_query_rfcomm_event, remote, BLUETOOTH_SERVICE_CLASS_HEADSET_AUDIO_GATEWAY_AG);
break;
case HSP_AUDIO_CONNECTION_ESTABLISHED:
case HSP_RFCOMM_CONNECTION_ESTABLISHED:
if (hs_microphone_gain >= 0){
if (!rfcomm_can_send_packet_now(rfcomm_cid)) {
rfcomm_request_can_send_now_event(rfcomm_cid);
return;
}
char buffer[20];
sprintf(buffer, "%s=%d\r\n", HSP_HS_MICROPHONE_GAIN, hs_microphone_gain);
hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer);
hs_microphone_gain = -1;
break;
}
if (hs_speaker_gain >= 0){
if (!rfcomm_can_send_packet_now(rfcomm_cid)) {
rfcomm_request_can_send_now_event(rfcomm_cid);
return;
}
char buffer[20];
sprintf(buffer, "%s=%d\r\n", HSP_HS_SPEAKER_GAIN, hs_speaker_gain);
hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer);
hs_speaker_gain = -1;
break;
}
break;
case HSP_W4_RFCOMM_DISCONNECTED:
rfcomm_disconnect(rfcomm_cid);
break;
default:
break;
}
}
