1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 // ***************************************************************************** 39 // 40 // Minimal setup for HSP Audio Gateway (!! UNDER DEVELOPMENT !!) 41 // 42 // ***************************************************************************** 43 44 #include "btstack-config.h" 45 46 #include <stdint.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 51 #include "hci_cmds.h" 52 #include "run_loop.h" 53 54 #include "hci.h" 55 #include "btstack_memory.h" 56 #include "hci_dump.h" 57 #include "l2cap.h" 58 #include "classic/sdp_query_rfcomm.h" 59 #include "classic/sdp.h" 60 #include "btstack_debug.h" 61 #include "hsp_ag.h" 62 63 #define RFCOMM_SERVER_CHANNEL 1 64 65 #define HSP_HS_BUTTON_PRESS "AT+CKPD=200" 66 #define HSP_HS_AT_CKPD "AT+CKPD\r\n" 67 #define HSP_AG_OK "\r\nOK\r\n" 68 #define HSP_AG_ERROR "\r\nERROR\r\n" 69 #define HSP_AG_RING "\r\nRING\r\n" 70 #define HSP_MICROPHONE_GAIN "+VGM" 71 #define HSP_SPEAKER_GAIN "+VGS" 72 73 #define HSP_HS_MICROPHONE_GAIN "AT+VGM=" 74 #define HSP_HS_SPEAKER_GAIN "AT+VGS=" 75 76 static const char default_hsp_ag_service_name[] = "Audio Gateway"; 77 78 static bd_addr_t remote; 79 static uint8_t channel_nr = 0; 80 81 static uint16_t mtu; 82 static uint16_t rfcomm_cid = 0; 83 static uint16_t sco_handle = 0; 84 static uint16_t rfcomm_handle = 0; 85 static timer_source_t hs_timeout; 86 87 // static uint8_t connection_state = 0; 88 89 static int ag_microphone_gain = -1; 90 static int ag_speaker_gain = -1; 91 static uint8_t ag_ring = 0; 92 static uint8_t ag_send_ok = 0; 93 static uint8_t ag_send_error = 0; 94 static uint8_t ag_num_button_press_received = 0; 95 static uint8_t ag_support_custom_commands = 0; 96 97 typedef enum { 98 HSP_IDLE, 99 HSP_SDP_QUERY_RFCOMM_CHANNEL, 100 HSP_W4_SDP_QUERY_COMPLETE, 101 HSP_W4_RFCOMM_CONNECTED, 102 HSP_W4_RING_ANSWER, 103 HSP_W4_USER_ACTION, 104 HSP_W2_CONNECT_SCO, 105 HSP_W4_SCO_CONNECTED, 106 HSP_ACTIVE, 107 HSP_W2_DISCONNECT_SCO, 108 HSP_W4_SCO_DISCONNECTED, 109 HSP_W2_DISCONNECT_RFCOMM, 110 HSP_W4_RFCOMM_DISCONNECTED, 111 HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN 112 } hsp_state_t; 113 114 static hsp_state_t hsp_state = HSP_IDLE; 115 116 117 static hsp_ag_callback_t hsp_ag_callback; 118 119 static void hsp_run(); 120 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 121 static void handle_query_rfcomm_event(sdp_query_event_t * event, void * context); 122 123 static void dummy_notify(uint8_t * event, uint16_t size){} 124 125 void hsp_ag_register_packet_handler(hsp_ag_callback_t callback){ 126 if (callback == NULL){ 127 callback = &dummy_notify; 128 } 129 hsp_ag_callback = callback; 130 } 131 132 static void emit_event(uint8_t event_subtype, uint8_t value){ 133 if (!hsp_ag_callback) return; 134 uint8_t event[4]; 135 event[0] = HCI_EVENT_HSP_META; 136 event[1] = sizeof(event) - 2; 137 event[2] = event_subtype; 138 event[3] = value; // status 0 == OK 139 (*hsp_ag_callback)(event, sizeof(event)); 140 } 141 142 void hsp_ag_create_service(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name){ 143 uint8_t* attribute; 144 de_create_sequence(service); 145 146 // 0x0000 "Service Record Handle" 147 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceRecordHandle); 148 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 149 150 // 0x0001 "Service Class ID List" 151 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceClassIDList); 152 attribute = de_push_sequence(service); 153 { 154 // "UUID for PAN Service" 155 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_Headset_AG); 156 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_GenericAudio); 157 } 158 de_pop_sequence(service, attribute); 159 160 // 0x0004 "Protocol Descriptor List" 161 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ProtocolDescriptorList); 162 attribute = de_push_sequence(service); 163 { 164 uint8_t* l2cpProtocol = de_push_sequence(attribute); 165 { 166 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, SDP_L2CAPProtocol); 167 } 168 de_pop_sequence(attribute, l2cpProtocol); 169 170 uint8_t* rfcomm = de_push_sequence(attribute); 171 { 172 de_add_number(rfcomm, DE_UUID, DE_SIZE_16, SDP_RFCOMMProtocol); // rfcomm_service 173 de_add_number(rfcomm, DE_UINT, DE_SIZE_8, rfcomm_channel_nr); // rfcomm channel 174 } 175 de_pop_sequence(attribute, rfcomm); 176 } 177 de_pop_sequence(service, attribute); 178 179 // 0x0005 "Public Browse Group" 180 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BrowseGroupList); // public browse group 181 attribute = de_push_sequence(service); 182 { 183 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_PublicBrowseGroup); 184 } 185 de_pop_sequence(service, attribute); 186 187 // 0x0009 "Bluetooth Profile Descriptor List" 188 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BluetoothProfileDescriptorList); 189 attribute = de_push_sequence(service); 190 { 191 uint8_t *sppProfile = de_push_sequence(attribute); 192 { 193 de_add_number(sppProfile, DE_UUID, DE_SIZE_16, SDP_HSP); 194 de_add_number(sppProfile, DE_UINT, DE_SIZE_16, 0x0102); // Verision 1.2 195 } 196 de_pop_sequence(attribute, sppProfile); 197 } 198 de_pop_sequence(service, attribute); 199 200 // 0x0100 "Service Name" 201 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 202 if (name){ 203 de_add_data(service, DE_STRING, strlen(name), (uint8_t *) name); 204 } else { 205 de_add_data(service, DE_STRING, strlen(default_hsp_ag_service_name), (uint8_t *) default_hsp_ag_service_name); 206 } 207 } 208 209 static int hsp_ag_send_str_over_rfcomm(uint16_t cid, char * command){ 210 if (!rfcomm_can_send_packet_now(cid)) return 1; 211 int err = rfcomm_send_internal(cid, (uint8_t*) command, strlen(command)); 212 if (err){ 213 printf("rfcomm_send_internal -> error 0X%02x", err); 214 return err; 215 } 216 printf("Send string: \"%s\"\n", command); 217 return err; 218 } 219 220 void hsp_ag_support_custom_commands(int enable){ 221 ag_support_custom_commands = enable; 222 } 223 224 int hsp_ag_send_result(char * result){ 225 if (!ag_support_custom_commands) return 1; 226 return hsp_ag_send_str_over_rfcomm(rfcomm_cid, result); 227 } 228 229 230 static void hsp_ag_reset_state(void){ 231 hsp_state = HSP_IDLE; 232 233 rfcomm_cid = 0; 234 rfcomm_handle = 0; 235 sco_handle = 0; 236 237 ag_send_ok = 0; 238 ag_send_error = 0; 239 ag_ring = 0; 240 241 ag_num_button_press_received = 0; 242 ag_support_custom_commands = 0; 243 244 ag_microphone_gain = -1; 245 ag_speaker_gain = -1; 246 } 247 248 void hsp_ag_init(uint8_t rfcomm_channel_nr){ 249 // init L2CAP 250 l2cap_init(); 251 l2cap_register_packet_handler(packet_handler); 252 253 rfcomm_init(); 254 rfcomm_register_packet_handler(packet_handler); 255 rfcomm_register_service(rfcomm_channel_nr, 0xffff); // reserved channel, mtu limited by l2cap 256 257 sdp_query_rfcomm_register_callback(handle_query_rfcomm_event, NULL); 258 259 hsp_ag_reset_state(); 260 } 261 262 void hsp_ag_connect(bd_addr_t bd_addr){ 263 if (hsp_state != HSP_IDLE) return; 264 hsp_state = HSP_SDP_QUERY_RFCOMM_CHANNEL; 265 memcpy(remote, bd_addr, 6); 266 hsp_run(); 267 } 268 269 void hsp_ag_disconnect(void){ 270 switch (hsp_state){ 271 case HSP_ACTIVE: 272 hsp_state = HSP_W2_DISCONNECT_SCO; 273 break; 274 case HSP_W2_CONNECT_SCO: 275 hsp_state = HSP_W2_DISCONNECT_RFCOMM; 276 break; 277 278 case HSP_W4_RFCOMM_CONNECTED: 279 case HSP_W4_SCO_CONNECTED: 280 hsp_state = HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN; 281 break; 282 default: 283 return; 284 } 285 hsp_run(); 286 } 287 288 void hsp_ag_set_microphone_gain(uint8_t gain){ 289 if (gain < 0 || gain >15) { 290 printf("Gain must be in interval [0..15], it is given %d\n", gain); 291 return; 292 } 293 ag_microphone_gain = gain; 294 hsp_run(); 295 } 296 297 // AG +VGS=5 [0..15] ; HS AT+VGM=6 | AG OK 298 void hsp_ag_set_speaker_gain(uint8_t gain){ 299 if (gain < 0 || gain >15) { 300 printf("Gain must be in interval [0..15], it is given %d\n", gain); 301 return; 302 } 303 ag_speaker_gain = gain; 304 hsp_run(); 305 } 306 307 static void hsp_timeout_handler(timer_source_t * timer){ 308 ag_ring = 1; 309 } 310 311 static void hsp_timeout_start(void){ 312 run_loop_remove_timer(&hs_timeout); 313 run_loop_set_timer_handler(&hs_timeout, hsp_timeout_handler); 314 run_loop_set_timer(&hs_timeout, 2000); // 2 seconds timeout 315 run_loop_add_timer(&hs_timeout); 316 } 317 318 static void hsp_timeout_stop(void){ 319 run_loop_remove_timer(&hs_timeout); 320 } 321 322 void hsp_ag_start_ringing(void){ 323 if (hsp_state != HSP_W2_CONNECT_SCO) return; 324 ag_ring = 1; 325 hsp_state = HSP_W4_RING_ANSWER; 326 hsp_timeout_start(); 327 } 328 329 void hsp_ag_stop_ringing(void){ 330 ag_ring = 0; 331 ag_num_button_press_received = 0; 332 hsp_state = HSP_W2_CONNECT_SCO; 333 hsp_timeout_stop(); 334 } 335 336 static void hsp_run(void){ 337 int err; 338 339 if (ag_send_ok){ 340 ag_send_ok = 0; 341 err = hsp_ag_send_str_over_rfcomm(rfcomm_cid, HSP_AG_OK); 342 if (err){ 343 ag_send_ok = 1; 344 } 345 return; 346 } 347 348 if (ag_send_error){ 349 ag_send_error = 0; 350 err = hsp_ag_send_str_over_rfcomm(rfcomm_cid, HSP_AG_ERROR); 351 if (err) { 352 ag_send_error = 1; 353 } 354 return; 355 } 356 357 switch (hsp_state){ 358 case HSP_SDP_QUERY_RFCOMM_CHANNEL: 359 hsp_state = HSP_W4_SDP_QUERY_COMPLETE; 360 printf("Start SDP query %s, 0x%02x\n", bd_addr_to_str(remote), SDP_HSP); 361 sdp_query_rfcomm_channel_and_name_for_uuid(remote, SDP_HSP); 362 break; 363 364 case HSP_W4_RING_ANSWER: 365 if (ag_ring){ 366 ag_ring = 0; 367 err = hsp_ag_send_str_over_rfcomm(rfcomm_cid, HSP_AG_RING); 368 if (err) { 369 ag_ring = 1; 370 } 371 break; 372 } 373 374 if (!ag_num_button_press_received) break; 375 ag_send_ok = 0; 376 377 ag_num_button_press_received = 0; 378 hsp_state = HSP_W2_CONNECT_SCO; 379 380 err = hsp_ag_send_str_over_rfcomm(rfcomm_cid, HSP_AG_OK); 381 if (err) { 382 hsp_state = HSP_W4_RING_ANSWER; 383 ag_num_button_press_received = 1; 384 } 385 break; 386 case HSP_W2_CONNECT_SCO: 387 if (!hci_can_send_command_packet_now()) break; 388 hsp_state = HSP_W4_SCO_CONNECTED; 389 hci_send_cmd(&hci_setup_synchronous_connection, rfcomm_handle, 8000, 8000, 0xFFFF, hci_get_sco_voice_setting(), 0xFF, 0x003F); 390 break; 391 392 case HSP_W2_DISCONNECT_SCO: 393 ag_num_button_press_received = 0; 394 395 hsp_state = HSP_W4_SCO_DISCONNECTED; 396 gap_disconnect(sco_handle); 397 break; 398 399 case HSP_W2_DISCONNECT_RFCOMM: 400 hsp_state = HSP_W4_RFCOMM_DISCONNECTED; 401 rfcomm_disconnect_internal(rfcomm_cid); 402 break; 403 case HSP_ACTIVE: 404 405 if (ag_microphone_gain >= 0){ 406 int gain = ag_microphone_gain; 407 ag_microphone_gain = -1; 408 char buffer[10]; 409 sprintf(buffer, "%s=%d\r\n", HSP_MICROPHONE_GAIN, gain); 410 err = hsp_ag_send_str_over_rfcomm(rfcomm_cid, buffer); 411 if (err) { 412 ag_microphone_gain = gain; 413 } 414 break; 415 } 416 417 if (ag_speaker_gain >= 0){ 418 int gain = ag_speaker_gain; 419 ag_speaker_gain = -1; 420 char buffer[10]; 421 sprintf(buffer, "%s=%d\r\n", HSP_SPEAKER_GAIN, gain); 422 err = hsp_ag_send_str_over_rfcomm(rfcomm_cid, buffer); 423 if (err) { 424 ag_speaker_gain = gain; 425 } 426 break; 427 } 428 break; 429 default: 430 break; 431 } 432 } 433 434 435 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 436 // printf("packet_handler type %u, packet[0] %x\n", packet_type, packet[0]); 437 if (packet_type == RFCOMM_DATA_PACKET){ 438 while (size > 0 && (packet[0] == '\n' || packet[0] == '\r')){ 439 size--; 440 packet++; 441 } 442 443 if (strncmp((char *)packet, HSP_HS_BUTTON_PRESS, strlen(HSP_HS_BUTTON_PRESS)) == 0){ 444 printf("Received button press %s\n", HSP_HS_BUTTON_PRESS); 445 ag_num_button_press_received++; 446 ag_send_ok = 1; 447 if (hsp_state == HSP_ACTIVE && ag_num_button_press_received >=2){ 448 ag_num_button_press_received = 0; 449 hsp_state = HSP_W2_DISCONNECT_SCO; 450 } 451 } else if (strncmp((char *)packet, HSP_HS_MICROPHONE_GAIN, strlen(HSP_HS_MICROPHONE_GAIN)) == 0){ 452 uint8_t gain = (uint8_t)atoi((char*)&packet[strlen(HSP_HS_MICROPHONE_GAIN)]); 453 ag_send_ok = 1; 454 emit_event(HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED, gain); 455 456 } else if (strncmp((char *)packet, HSP_HS_SPEAKER_GAIN, strlen(HSP_HS_SPEAKER_GAIN)) == 0){ 457 uint8_t gain = (uint8_t)atoi((char*)&packet[strlen(HSP_HS_SPEAKER_GAIN)]); 458 ag_send_ok = 1; 459 emit_event(HSP_SUBEVENT_SPEAKER_GAIN_CHANGED, gain); 460 461 } else if (strncmp((char *)packet, "AT+", 3) == 0){ 462 ag_send_error = 1; 463 if (!hsp_ag_callback) return; 464 // re-use incoming buffer to avoid reserving large buffers - ugly but efficient 465 uint8_t * event = packet - 3; 466 event[0] = HCI_EVENT_HSP_META; 467 event[1] = size + 1; 468 event[2] = HSP_SUBEVENT_HS_COMMAND; 469 (*hsp_ag_callback)(event, size+3); 470 } 471 472 hsp_run(); 473 return; 474 } 475 476 if (packet_type != HCI_EVENT_PACKET) return; 477 uint8_t event = packet[0]; 478 bd_addr_t event_addr; 479 uint16_t handle; 480 481 switch (event) { 482 case BTSTACK_EVENT_STATE: 483 // BTstack activated, get started 484 if (packet[2] == HCI_STATE_WORKING){ 485 printf("BTstack activated, get started .\n"); 486 } 487 break; 488 489 case HCI_EVENT_PIN_CODE_REQUEST: 490 // inform about pin code request 491 printf("Pin code request - using '0000'\n\r"); 492 bt_flip_addr(event_addr, &packet[2]); 493 hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000"); 494 break; 495 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE:{ 496 int index = 2; 497 uint8_t status = packet[index++]; 498 sco_handle = READ_BT_16(packet, index); 499 index+=2; 500 bd_addr_t address; 501 memcpy(address, &packet[index], 6); 502 index+=6; 503 uint8_t link_type = packet[index++]; 504 uint8_t transmission_interval = packet[index++]; // measured in slots 505 uint8_t retransmission_interval = packet[index++];// measured in slots 506 uint16_t rx_packet_length = READ_BT_16(packet, index); // measured in bytes 507 index+=2; 508 uint16_t tx_packet_length = READ_BT_16(packet, index); // measured in bytes 509 index+=2; 510 uint8_t air_mode = packet[index]; 511 512 if (status != 0){ 513 log_error("(e)SCO Connection is not established, status %u", status); 514 break; 515 } 516 switch (link_type){ 517 case 0x00: 518 printf("SCO Connection established. \n"); 519 if (transmission_interval != 0) log_error("SCO Connection: transmission_interval not zero: %d.", transmission_interval); 520 if (retransmission_interval != 0) log_error("SCO Connection: retransmission_interval not zero: %d.", retransmission_interval); 521 if (rx_packet_length != 0) log_error("SCO Connection: rx_packet_length not zero: %d.", rx_packet_length); 522 if (tx_packet_length != 0) log_error("SCO Connection: tx_packet_length not zero: %d.", tx_packet_length); 523 break; 524 case 0x02: 525 printf("eSCO Connection established. \n"); 526 break; 527 default: 528 log_error("(e)SCO reserved link_type 0x%2x", link_type); 529 break; 530 } 531 log_info("sco_handle 0x%2x, address %s, transmission_interval %u slots, retransmission_interval %u slots, " 532 " rx_packet_length %u bytes, tx_packet_length %u bytes, air_mode 0x%2x (0x02 == CVSD)", sco_handle, 533 bd_addr_to_str(address), transmission_interval, retransmission_interval, rx_packet_length, tx_packet_length, air_mode); 534 535 if (hsp_state == HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN){ 536 hsp_state = HSP_W2_DISCONNECT_SCO; 537 break; 538 } 539 540 hsp_state = HSP_ACTIVE; 541 emit_event(HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE, 0); 542 break; 543 } 544 545 case RFCOMM_EVENT_INCOMING_CONNECTION: 546 // data: event (8), len(8), address(48), channel (8), rfcomm_cid (16) 547 if (hsp_state != HSP_IDLE) return; 548 549 bt_flip_addr(event_addr, &packet[2]); 550 rfcomm_cid = READ_BT_16(packet, 9); 551 printf("RFCOMM channel %u requested for %s\n", packet[8], bd_addr_to_str(event_addr)); 552 rfcomm_accept_connection_internal(rfcomm_cid); 553 554 hsp_state = HSP_W4_RFCOMM_CONNECTED; 555 556 break; 557 558 case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE: 559 printf("RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE packet_handler type %u, packet[0] %x\n", packet_type, packet[0]); 560 // data: event(8), len(8), status (8), address (48), handle(16), server channel(8), rfcomm_cid(16), max frame size(16) 561 if (packet[2]) { 562 printf("RFCOMM channel open failed, status %u\n", packet[2]); 563 hsp_ag_reset_state(); 564 emit_event(HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE, packet[2]); 565 } else { 566 // data: event(8) , len(8), status (8), address (48), handle (16), server channel(8), rfcomm_cid(16), max frame size(16) 567 rfcomm_handle = READ_BT_16(packet, 9); 568 rfcomm_cid = READ_BT_16(packet, 12); 569 mtu = READ_BT_16(packet, 14); 570 printf("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u, state %d\n", rfcomm_cid, mtu, hsp_state); 571 572 switch (hsp_state){ 573 case HSP_W4_RFCOMM_CONNECTED: 574 ag_num_button_press_received = 0; 575 hsp_state = HSP_W2_CONNECT_SCO; 576 break; 577 case HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN: 578 hsp_state = HSP_W2_DISCONNECT_RFCOMM; 579 break; 580 default: 581 printf("no valid state\n"); 582 break; 583 } 584 } 585 break; 586 case DAEMON_EVENT_HCI_PACKET_SENT: 587 case RFCOMM_EVENT_CREDITS: 588 break; 589 590 case HCI_EVENT_DISCONNECTION_COMPLETE: 591 if (hsp_state != HSP_W4_SCO_DISCONNECTED){ 592 log_info("received gap disconnect in wrong hsp state"); 593 } 594 handle = READ_BT_16(packet,3); 595 if (handle == sco_handle){ 596 printf("SCO disconnected, w2 disconnect RFCOMM\n"); 597 sco_handle = 0; 598 hsp_state = HSP_W2_DISCONNECT_RFCOMM; 599 break; 600 } 601 break; 602 case RFCOMM_EVENT_CHANNEL_CLOSED: 603 if (hsp_state != HSP_W4_RFCOMM_DISCONNECTED){ 604 log_info("received RFCOMM disconnect in wrong hsp state"); 605 } 606 printf("RFCOMM channel closed\n"); 607 hsp_ag_reset_state(); 608 emit_event(HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE,0); 609 break; 610 default: 611 break; 612 } 613 hsp_run(); 614 } 615 616 static void handle_query_rfcomm_event(sdp_query_event_t * event, void * context){ 617 sdp_query_rfcomm_service_event_t * ve; 618 sdp_query_complete_event_t * ce; 619 620 switch (event->type){ 621 case SDP_QUERY_RFCOMM_SERVICE: 622 ve = (sdp_query_rfcomm_service_event_t*) event; 623 channel_nr = ve->channel_nr; 624 printf("** Service name: '%s', RFCOMM port %u\n", ve->service_name, channel_nr); 625 break; 626 case SDP_QUERY_COMPLETE: 627 ce = (sdp_query_complete_event_t*) event; 628 629 if (channel_nr > 0){ 630 hsp_state = HSP_W4_RFCOMM_CONNECTED; 631 printf("RFCOMM create channel. state %d\n", HSP_W4_RFCOMM_CONNECTED); 632 rfcomm_create_channel(remote, channel_nr, NULL); 633 break; 634 } 635 hsp_ag_reset_state(); 636 printf("Service not found, status %u.\n", ce->status); 637 if (ce->status){ 638 emit_event(HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE, ce->status); 639 } else { 640 emit_event(HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE, SDP_SERVICE_NOT_FOUND); 641 } 642 break; 643 default: 644 break; 645 } 646 } 647 648 649