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 // HSP Headset 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 "btstack_debug.h" 52 #include "btstack_event.h" 53 #include "btstack_memory.h" 54 #include "btstack_run_loop.h" 55 #include "classic/sdp_server.h" 56 #include "classic/sdp_query_rfcomm.h" 57 #include "hci.h" 58 #include "hci_cmd.h" 59 #include "hci_dump.h" 60 #include "hsp_hs.h" 61 #include "l2cap.h" 62 63 #define HSP_AG_OK "OK" 64 #define HSP_AG_ERROR "ERROR" 65 #define HSP_AG_RING "RING" 66 #define HSP_MICROPHONE_GAIN "+VGM=" 67 #define HSP_SPEAKER_GAIN "+VGS=" 68 69 #define HSP_HS_AT_CKPD "AT+CKPD=200\r\n" 70 #define HSP_HS_MICROPHONE_GAIN "AT+VGM" 71 #define HSP_HS_SPEAKER_GAIN "AT+VGS" 72 73 static const char default_hsp_hs_service_name[] = "Headset"; 74 75 static bd_addr_t remote = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; 76 static uint8_t channel_nr = 0; 77 78 static uint16_t mtu; 79 static uint16_t rfcomm_cid = 0; 80 static uint16_t sco_handle = 0; 81 static uint16_t rfcomm_handle = 0; 82 83 // static uint8_t connection_state = 0; 84 85 static int hs_microphone_gain = -1; 86 static int hs_speaker_gain = -1; 87 88 static uint8_t hs_send_button_press = 0; 89 static uint8_t hs_support_custom_indications = 0; 90 static uint8_t hs_outgoing_connection = 0; 91 92 static btstack_packet_callback_registration_t hci_event_callback_registration; 93 94 typedef enum { 95 HSP_IDLE, 96 HSP_SDP_QUERY_RFCOMM_CHANNEL, 97 HSP_W4_SDP_EVENT_QUERY_COMPLETE, 98 HSP_W4_RFCOMM_CONNECTED, 99 HSP_W4_USER_ACTION, 100 HSP_W2_CONNECT_SCO, 101 HSP_W4_SCO_CONNECTED, 102 HSP_ACTIVE, 103 HSP_W2_DISCONNECT_SCO, 104 HSP_W4_SCO_DISCONNECTED, 105 HSP_W2_DISCONNECT_RFCOMM, 106 HSP_W4_RFCOMM_DISCONNECTED, 107 HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN 108 } hsp_state_t; 109 110 static hsp_state_t hsp_state = HSP_IDLE; 111 112 static void hsp_run(void); 113 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 114 static void handle_query_rfcomm_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size); 115 116 static hsp_hs_callback_t hsp_hs_callback; 117 static void dummy_notify(uint8_t * event, uint16_t size){} 118 119 void hsp_hs_register_packet_handler(hsp_hs_callback_t callback){ 120 if (callback == NULL){ 121 callback = &dummy_notify; 122 } 123 hsp_hs_callback = callback; 124 } 125 126 static void emit_event(uint8_t event_subtype, uint8_t value){ 127 if (!hsp_hs_callback) return; 128 uint8_t event[4]; 129 event[0] = HCI_EVENT_HSP_META; 130 event[1] = sizeof(event) - 2; 131 event[2] = event_subtype; 132 event[3] = value; // status 0 == OK 133 (*hsp_hs_callback)(event, sizeof(event)); 134 } 135 136 static void emit_event_audio_connected(uint8_t status, uint16_t handle){ 137 if (!hsp_hs_callback) return; 138 uint8_t event[6]; 139 event[0] = HCI_EVENT_HSP_META; 140 event[1] = sizeof(event) - 2; 141 event[2] = HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE; 142 event[3] = status; 143 little_endian_store_16(event, 4, handle); 144 (*hsp_hs_callback)(event, sizeof(event)); 145 } 146 147 // remote audio volume control 148 // AG +VGM=13 [0..15] ; HS AT+VGM=6 | AG OK 149 150 static int hsp_hs_send_str_over_rfcomm(uint16_t cid, const char * command){ 151 if (!rfcomm_can_send_packet_now(rfcomm_cid)) return 1; 152 int err = rfcomm_send(cid, (uint8_t*) command, strlen(command)); 153 if (err){ 154 printf("rfcomm_send -> error 0X%02x", err); 155 } 156 return err; 157 } 158 159 void hsp_hs_enable_custom_indications(int enable){ 160 hs_support_custom_indications = enable; 161 } 162 163 int hsp_hs_send_result(const char * result){ 164 if (!hs_support_custom_indications) return 1; 165 return hsp_hs_send_str_over_rfcomm(rfcomm_cid, result); 166 } 167 168 169 void hsp_hs_create_sdp_record(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name, uint8_t have_remote_audio_control){ 170 uint8_t* attribute; 171 de_create_sequence(service); 172 173 // 0x0000 "Service Record Handle" 174 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceRecordHandle); 175 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 176 177 // 0x0001 "Service Class ID List" 178 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceClassIDList); 179 attribute = de_push_sequence(service); 180 { 181 // see Bluetooth Erratum #3507 182 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_HSP); // 0x1108 183 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_Headset_HS); // 0x1131 184 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_GenericAudio); // 0x1203 185 } 186 de_pop_sequence(service, attribute); 187 188 // 0x0004 "Protocol Descriptor List" 189 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ProtocolDescriptorList); 190 attribute = de_push_sequence(service); 191 { 192 uint8_t* l2cpProtocol = de_push_sequence(attribute); 193 { 194 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, SDP_L2CAPProtocol); 195 } 196 de_pop_sequence(attribute, l2cpProtocol); 197 198 uint8_t* rfcomm = de_push_sequence(attribute); 199 { 200 de_add_number(rfcomm, DE_UUID, DE_SIZE_16, SDP_RFCOMMProtocol); // rfcomm_service 201 de_add_number(rfcomm, DE_UINT, DE_SIZE_8, rfcomm_channel_nr); // rfcomm channel 202 } 203 de_pop_sequence(attribute, rfcomm); 204 } 205 de_pop_sequence(service, attribute); 206 207 // 0x0005 "Public Browse Group" 208 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BrowseGroupList); // public browse group 209 attribute = de_push_sequence(service); 210 { 211 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_PublicBrowseGroup); 212 } 213 de_pop_sequence(service, attribute); 214 215 // 0x0009 "Bluetooth Profile Descriptor List" 216 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BluetoothProfileDescriptorList); 217 attribute = de_push_sequence(service); 218 { 219 uint8_t *hsp_profile = de_push_sequence(attribute); 220 { 221 de_add_number(hsp_profile, DE_UUID, DE_SIZE_16, SDP_HSP); 222 de_add_number(hsp_profile, DE_UINT, DE_SIZE_16, 0x0102); // Verision 1.2 223 } 224 de_pop_sequence(attribute, hsp_profile); 225 } 226 de_pop_sequence(service, attribute); 227 228 // 0x0100 "Service Name" 229 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 230 if (name){ 231 de_add_data(service, DE_STRING, strlen(name), (uint8_t *) name); 232 } else { 233 de_add_data(service, DE_STRING, strlen(default_hsp_hs_service_name), (uint8_t *) default_hsp_hs_service_name); 234 } 235 236 // Remote audio volume control 237 de_add_number(service, DE_UINT, DE_SIZE_16, 0x030C); 238 de_add_number(service, DE_BOOL, DE_SIZE_8, have_remote_audio_control); 239 } 240 241 static void hsp_hs_reset_state(void){ 242 hsp_state = HSP_IDLE; 243 244 rfcomm_cid = 0; 245 rfcomm_handle = 0; 246 sco_handle = 0; 247 248 hs_microphone_gain = -1; 249 hs_speaker_gain = -1; 250 251 hs_send_button_press = 0; 252 hs_support_custom_indications = 0; 253 } 254 255 void hsp_hs_init(uint8_t rfcomm_channel_nr){ 256 // register for HCI events 257 hci_event_callback_registration.callback = &packet_handler; 258 hci_add_event_handler(&hci_event_callback_registration); 259 260 // init L2CAP 261 l2cap_init(); 262 263 rfcomm_init(); 264 rfcomm_register_service(packet_handler, rfcomm_channel_nr, 0xffff); // reserved channel, mtu limited by l2cap 265 266 hsp_hs_reset_state(); 267 } 268 269 270 void hsp_hs_connect(bd_addr_t bd_addr){ 271 if (hsp_state != HSP_IDLE) return; 272 hs_outgoing_connection = 1; 273 hsp_state = HSP_SDP_QUERY_RFCOMM_CHANNEL; 274 memcpy(remote, bd_addr, 6); 275 hsp_run(); 276 } 277 278 void hsp_hs_disconnect(bd_addr_t bd_addr){ 279 switch (hsp_state){ 280 case HSP_ACTIVE: 281 printf("HSP_W4_USER_ACTION\n"); 282 hsp_state = HSP_W4_USER_ACTION; 283 hs_send_button_press = 1; 284 break; 285 case HSP_W4_RFCOMM_CONNECTED: 286 printf("HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN \n"); 287 hsp_state = HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN; 288 break; 289 default: 290 return; 291 } 292 hsp_run(); 293 } 294 295 296 void hsp_hs_set_microphone_gain(uint8_t gain){ 297 if (gain < 0 || gain >15) { 298 printf("Gain must be in interval [0..15], it is given %d\n", gain); 299 return; 300 } 301 hs_microphone_gain = gain; 302 hsp_run(); 303 } 304 305 // AG +VGS=5 [0..15] ; HS AT+VGM=6 | AG OK 306 void hsp_hs_set_speaker_gain(uint8_t gain){ 307 if (gain < 0 || gain >15) { 308 printf("Gain must be in interval [0..15], it is given %d\n", gain); 309 return; 310 } 311 hs_speaker_gain = gain; 312 hsp_run(); 313 } 314 315 316 static void hsp_run(void){ 317 int err; 318 319 if (hs_send_button_press){ 320 hs_send_button_press = 0; 321 err = hsp_hs_send_str_over_rfcomm(rfcomm_cid, HSP_HS_AT_CKPD); 322 if (err) { 323 hs_send_button_press = 1; 324 } 325 return; 326 } 327 328 switch (hsp_state){ 329 case HSP_SDP_QUERY_RFCOMM_CHANNEL: 330 hsp_state = HSP_W4_SDP_EVENT_QUERY_COMPLETE; 331 sdp_query_rfcomm_channel_and_name_for_uuid(&handle_query_rfcomm_event, remote, SDP_Headset_AG); 332 break; 333 334 case HSP_W2_CONNECT_SCO: 335 hsp_state = HSP_W4_SCO_CONNECTED; 336 break; 337 338 case HSP_W2_DISCONNECT_SCO: 339 hsp_state = HSP_W4_SCO_DISCONNECTED; 340 break; 341 342 case HSP_ACTIVE: 343 344 if (hs_microphone_gain >= 0){ 345 int gain = hs_microphone_gain; 346 hs_microphone_gain = -1; 347 char buffer[20]; 348 sprintf(buffer, "%s=%d\r\n", HSP_HS_MICROPHONE_GAIN, gain); 349 err = hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer); 350 if (err) { 351 hs_microphone_gain = gain; 352 } 353 break; 354 } 355 356 if (hs_speaker_gain >= 0){ 357 int gain = hs_speaker_gain; 358 hs_speaker_gain = -1; 359 char buffer[20]; 360 sprintf(buffer, "%s=%d\r\n", HSP_HS_SPEAKER_GAIN, gain); 361 err = hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer); 362 if (err) { 363 hs_speaker_gain = gain; 364 } 365 break; 366 } 367 368 break; 369 default: 370 break; 371 } 372 } 373 374 375 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 376 // printf("packet_handler type %u, packet[0] %x\n", packet_type, packet[0]); 377 if (packet_type == RFCOMM_DATA_PACKET){ 378 // skip over leading newline 379 while (size > 0 && (packet[0] == '\n' || packet[0] == '\r')){ 380 size--; 381 packet++; 382 } 383 if (strncmp((char *)packet, HSP_AG_RING, strlen(HSP_AG_RING)) == 0){ 384 emit_event(HSP_SUBEVENT_RING, 0); 385 } else if (strncmp((char *)packet, HSP_AG_OK, strlen(HSP_AG_OK)) == 0){ 386 printf("OK RECEIVED\n"); 387 switch (hsp_state){ 388 case HSP_W4_RFCOMM_CONNECTED: 389 hsp_state = HSP_W2_CONNECT_SCO; 390 break; 391 case HSP_W4_USER_ACTION: 392 hsp_state = HSP_W2_DISCONNECT_SCO; 393 break; 394 default: 395 break; 396 } 397 } else if (strncmp((char *)packet, HSP_MICROPHONE_GAIN, strlen(HSP_MICROPHONE_GAIN)) == 0){ 398 uint8_t gain = (uint8_t)atoi((char*)&packet[strlen(HSP_MICROPHONE_GAIN)]); 399 emit_event(HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED, gain); 400 401 } else if (strncmp((char *)packet, HSP_SPEAKER_GAIN, strlen(HSP_SPEAKER_GAIN)) == 0){ 402 uint8_t gain = (uint8_t)atoi((char*)&packet[strlen(HSP_SPEAKER_GAIN)]); 403 emit_event(HSP_SUBEVENT_SPEAKER_GAIN_CHANGED, gain); 404 } else { 405 if (!hsp_hs_callback) return; 406 // strip trailing newline 407 while (size > 0 && (packet[size-1] == '\n' || packet[size-1] == '\r')){ 408 size--; 409 } 410 // add trailing \0 411 packet[size] = 0; 412 // re-use incoming buffer to avoid reserving large buffers - ugly but efficient 413 uint8_t * event = packet - 3; 414 event[0] = HCI_EVENT_HSP_META; 415 event[1] = size + 1; 416 event[2] = HSP_SUBEVENT_AG_INDICATION; 417 (*hsp_hs_callback)(event, size+3); 418 } 419 hsp_run(); 420 return; 421 } 422 423 if (packet_type != HCI_EVENT_PACKET) return; 424 uint8_t event = packet[0]; 425 bd_addr_t event_addr; 426 uint16_t handle; 427 428 switch (event) { 429 case BTSTACK_EVENT_STATE: 430 // bt stack activated, get started 431 if (packet[2] == HCI_STATE_WORKING){ 432 printf("BTstack activated, get started .\n"); 433 } 434 hsp_hs_callback(packet, size); 435 break; 436 437 case HCI_EVENT_PIN_CODE_REQUEST: 438 // inform about pin code request 439 printf("Pin code request - using '0000'\n\r"); 440 reverse_bd_addr(&packet[2], event_addr); 441 hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000"); 442 break; 443 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE:{ 444 int index = 2; 445 uint8_t status = packet[index++]; 446 sco_handle = little_endian_read_16(packet, index); 447 index+=2; 448 bd_addr_t address; 449 memcpy(address, &packet[index], 6); 450 index+=6; 451 uint8_t link_type = packet[index++]; 452 uint8_t transmission_interval = packet[index++]; // measured in slots 453 uint8_t retransmission_interval = packet[index++];// measured in slots 454 uint16_t rx_packet_length = little_endian_read_16(packet, index); // measured in bytes 455 index+=2; 456 uint16_t tx_packet_length = little_endian_read_16(packet, index); // measured in bytes 457 index+=2; 458 uint8_t air_mode = packet[index]; 459 460 if (status != 0){ 461 log_error("(e)SCO Connection failed, status %u", status); 462 emit_event_audio_connected(status, sco_handle); 463 break; 464 } 465 switch (link_type){ 466 case 0x00: 467 printf("SCO Connection established. \n"); 468 if (transmission_interval != 0) log_error("SCO Connection: transmission_interval not zero: %d.", transmission_interval); 469 if (retransmission_interval != 0) log_error("SCO Connection: retransmission_interval not zero: %d.", retransmission_interval); 470 if (rx_packet_length != 0) log_error("SCO Connection: rx_packet_length not zero: %d.", rx_packet_length); 471 if (tx_packet_length != 0) log_error("SCO Connection: tx_packet_length not zero: %d.", tx_packet_length); 472 break; 473 case 0x02: 474 printf("eSCO Connection established. \n"); 475 break; 476 default: 477 log_error("(e)SCO reserved link_type 0x%2x", link_type); 478 break; 479 } 480 log_info("sco_handle 0x%2x, address %s, transmission_interval %u slots, retransmission_interval %u slots, " 481 " rx_packet_length %u bytes, tx_packet_length %u bytes, air_mode 0x%2x (0x02 == CVSD)", sco_handle, 482 bd_addr_to_str(address), transmission_interval, retransmission_interval, rx_packet_length, tx_packet_length, air_mode); 483 484 if (hsp_state == HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN){ 485 hsp_state = HSP_W2_DISCONNECT_SCO; 486 break; 487 } 488 489 // forward event to app 490 hsp_hs_callback(packet, size); 491 492 hsp_state = HSP_ACTIVE; 493 emit_event_audio_connected(0, sco_handle); 494 break; 495 } 496 497 case RFCOMM_EVENT_INCOMING_CONNECTION: 498 // data: event (8), len(8), address(48), channel (8), rfcomm_cid (16) 499 if (hsp_state != HSP_IDLE) return; 500 501 reverse_bd_addr(&packet[2], event_addr); 502 rfcomm_cid = little_endian_read_16(packet, 9); 503 printf("RFCOMM channel %u requested for %s\n", packet[8], bd_addr_to_str(event_addr)); 504 rfcomm_accept_connection(rfcomm_cid); 505 506 hsp_state = HSP_W4_RFCOMM_CONNECTED; 507 break; 508 509 case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE: 510 printf("RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE packet_handler type %u, packet[0] %x\n", packet_type, packet[0]); 511 // data: event(8), len(8), status (8), address (48), handle(16), server channel(8), rfcomm_cid(16), max frame size(16) 512 if (packet[2]) { 513 printf("RFCOMM channel open failed, status %u\n", packet[2]); 514 hsp_hs_reset_state(); 515 emit_event(HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE, packet[2]); 516 hs_outgoing_connection = 0; 517 } else { 518 // data: event(8) , len(8), status (8), address (48), handle (16), server channel(8), rfcomm_cid(16), max frame size(16) 519 rfcomm_handle = little_endian_read_16(packet, 9); 520 rfcomm_cid = little_endian_read_16(packet, 12); 521 mtu = little_endian_read_16(packet, 14); 522 printf("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n", rfcomm_cid, mtu); 523 524 if (hs_outgoing_connection){ 525 hs_outgoing_connection = 0; 526 hs_send_button_press = 1; 527 } 528 529 switch (hsp_state){ 530 case HSP_W4_RFCOMM_CONNECTED: 531 hsp_state = HSP_W2_CONNECT_SCO; 532 break; 533 case HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN: 534 hsp_state = HSP_W2_DISCONNECT_RFCOMM; 535 break; 536 default: 537 break; 538 } 539 } 540 break; 541 542 case RFCOMM_EVENT_CAN_SEND_NOW: 543 hsp_hs_callback(packet, size); 544 break; 545 546 case HCI_EVENT_DISCONNECTION_COMPLETE: 547 handle = little_endian_read_16(packet,3); 548 if (handle == sco_handle){ 549 sco_handle = 0; 550 hsp_state = HSP_W2_DISCONNECT_RFCOMM; 551 printf(" HSP_W2_DISCONNECT_RFCOMM\n"); 552 break; 553 } 554 break; 555 case RFCOMM_EVENT_CHANNEL_CLOSED: 556 printf("RFCOMM channel closed\n"); 557 hsp_hs_reset_state(); 558 emit_event(HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE,0); 559 break; 560 default: 561 break; 562 } 563 hsp_run(); 564 } 565 566 static void handle_query_rfcomm_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 567 switch (packet[0]){ 568 case SDP_EVENT_QUERY_RFCOMM_SERVICE: 569 channel_nr = sdp_event_query_rfcomm_service_get_rfcomm_channel(packet); 570 printf("** Service name: '%s', RFCOMM port %u\n", sdp_event_query_rfcomm_service_get_name(packet), channel_nr); 571 break; 572 case SDP_EVENT_QUERY_COMPLETE: 573 if (channel_nr > 0){ 574 hsp_state = HSP_W4_RFCOMM_CONNECTED; 575 printf("RFCOMM create channel.\n"); 576 rfcomm_create_channel(packet_handler, remote, channel_nr, NULL); 577 break; 578 } 579 hsp_hs_reset_state(); 580 printf("Service not found, status %u.\n", sdp_event_query_complete_get_status(packet)); 581 exit(0); 582 break; 583 } 584 } 585 586 void hsp_hs_send_button_press(void){ 587 hs_send_button_press = 1; 588 hsp_run(); 589 } 590