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_ring_event(void){ 137 if (!hsp_hs_callback) return; 138 uint8_t event[3]; 139 event[0] = HCI_EVENT_HSP_META; 140 event[1] = sizeof(event) - 2; 141 event[2] = HSP_SUBEVENT_RING; 142 (*hsp_hs_callback)(event, sizeof(event)); 143 } 144 145 static void emit_event_audio_connected(uint8_t status, uint16_t handle){ 146 if (!hsp_hs_callback) return; 147 uint8_t event[6]; 148 event[0] = HCI_EVENT_HSP_META; 149 event[1] = sizeof(event) - 2; 150 event[2] = HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE; 151 event[3] = status; 152 little_endian_store_16(event, 4, handle); 153 (*hsp_hs_callback)(event, sizeof(event)); 154 } 155 156 // remote audio volume control 157 // AG +VGM=13 [0..15] ; HS AT+VGM=6 | AG OK 158 159 static int hsp_hs_send_str_over_rfcomm(uint16_t cid, const char * command){ 160 if (!rfcomm_can_send_packet_now(rfcomm_cid)) return 1; 161 int err = rfcomm_send(cid, (uint8_t*) command, strlen(command)); 162 if (err){ 163 printf("rfcomm_send -> error 0X%02x", err); 164 } 165 return err; 166 } 167 168 void hsp_hs_enable_custom_indications(int enable){ 169 hs_support_custom_indications = enable; 170 } 171 172 int hsp_hs_send_result(const char * result){ 173 if (!hs_support_custom_indications) return 1; 174 return hsp_hs_send_str_over_rfcomm(rfcomm_cid, result); 175 } 176 177 178 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){ 179 uint8_t* attribute; 180 de_create_sequence(service); 181 182 // 0x0000 "Service Record Handle" 183 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceRecordHandle); 184 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 185 186 // 0x0001 "Service Class ID List" 187 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceClassIDList); 188 attribute = de_push_sequence(service); 189 { 190 // see Bluetooth Erratum #3507 191 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_HSP); // 0x1108 192 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_Headset_HS); // 0x1131 193 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_GenericAudio); // 0x1203 194 } 195 de_pop_sequence(service, attribute); 196 197 // 0x0004 "Protocol Descriptor List" 198 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ProtocolDescriptorList); 199 attribute = de_push_sequence(service); 200 { 201 uint8_t* l2cpProtocol = de_push_sequence(attribute); 202 { 203 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, SDP_L2CAPProtocol); 204 } 205 de_pop_sequence(attribute, l2cpProtocol); 206 207 uint8_t* rfcomm = de_push_sequence(attribute); 208 { 209 de_add_number(rfcomm, DE_UUID, DE_SIZE_16, SDP_RFCOMMProtocol); // rfcomm_service 210 de_add_number(rfcomm, DE_UINT, DE_SIZE_8, rfcomm_channel_nr); // rfcomm channel 211 } 212 de_pop_sequence(attribute, rfcomm); 213 } 214 de_pop_sequence(service, attribute); 215 216 // 0x0005 "Public Browse Group" 217 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BrowseGroupList); // public browse group 218 attribute = de_push_sequence(service); 219 { 220 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_PublicBrowseGroup); 221 } 222 de_pop_sequence(service, attribute); 223 224 // 0x0009 "Bluetooth Profile Descriptor List" 225 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BluetoothProfileDescriptorList); 226 attribute = de_push_sequence(service); 227 { 228 uint8_t *hsp_profile = de_push_sequence(attribute); 229 { 230 de_add_number(hsp_profile, DE_UUID, DE_SIZE_16, SDP_HSP); 231 de_add_number(hsp_profile, DE_UINT, DE_SIZE_16, 0x0102); // Verision 1.2 232 } 233 de_pop_sequence(attribute, hsp_profile); 234 } 235 de_pop_sequence(service, attribute); 236 237 // 0x0100 "Service Name" 238 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 239 if (name){ 240 de_add_data(service, DE_STRING, strlen(name), (uint8_t *) name); 241 } else { 242 de_add_data(service, DE_STRING, strlen(default_hsp_hs_service_name), (uint8_t *) default_hsp_hs_service_name); 243 } 244 245 // Remote audio volume control 246 de_add_number(service, DE_UINT, DE_SIZE_16, 0x030C); 247 de_add_number(service, DE_BOOL, DE_SIZE_8, have_remote_audio_control); 248 } 249 250 static void hsp_hs_reset_state(void){ 251 hsp_state = HSP_IDLE; 252 253 rfcomm_cid = 0; 254 rfcomm_handle = 0; 255 sco_handle = 0; 256 257 hs_microphone_gain = -1; 258 hs_speaker_gain = -1; 259 260 hs_send_button_press = 0; 261 hs_support_custom_indications = 0; 262 } 263 264 void hsp_hs_init(uint8_t rfcomm_channel_nr){ 265 // register for HCI events 266 hci_event_callback_registration.callback = &packet_handler; 267 hci_add_event_handler(&hci_event_callback_registration); 268 269 // init L2CAP 270 l2cap_init(); 271 272 rfcomm_init(); 273 rfcomm_register_service(packet_handler, rfcomm_channel_nr, 0xffff); // reserved channel, mtu limited by l2cap 274 275 hsp_hs_reset_state(); 276 } 277 278 279 void hsp_hs_connect(bd_addr_t bd_addr){ 280 if (hsp_state != HSP_IDLE) return; 281 hs_outgoing_connection = 1; 282 hsp_state = HSP_SDP_QUERY_RFCOMM_CHANNEL; 283 memcpy(remote, bd_addr, 6); 284 hsp_run(); 285 } 286 287 void hsp_hs_disconnect(bd_addr_t bd_addr){ 288 switch (hsp_state){ 289 case HSP_ACTIVE: 290 printf("HSP_W4_USER_ACTION\n"); 291 hsp_state = HSP_W4_USER_ACTION; 292 hs_send_button_press = 1; 293 break; 294 case HSP_W4_RFCOMM_CONNECTED: 295 printf("HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN \n"); 296 hsp_state = HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN; 297 break; 298 default: 299 return; 300 } 301 hsp_run(); 302 } 303 304 305 void hsp_hs_set_microphone_gain(uint8_t gain){ 306 if (gain < 0 || gain >15) { 307 printf("Gain must be in interval [0..15], it is given %d\n", gain); 308 return; 309 } 310 hs_microphone_gain = gain; 311 hsp_run(); 312 } 313 314 // AG +VGS=5 [0..15] ; HS AT+VGM=6 | AG OK 315 void hsp_hs_set_speaker_gain(uint8_t gain){ 316 if (gain < 0 || gain >15) { 317 printf("Gain must be in interval [0..15], it is given %d\n", gain); 318 return; 319 } 320 hs_speaker_gain = gain; 321 hsp_run(); 322 } 323 324 325 static void hsp_run(void){ 326 int err; 327 328 if (hs_send_button_press){ 329 hs_send_button_press = 0; 330 err = hsp_hs_send_str_over_rfcomm(rfcomm_cid, HSP_HS_AT_CKPD); 331 if (err) { 332 hs_send_button_press = 1; 333 } 334 return; 335 } 336 337 switch (hsp_state){ 338 case HSP_SDP_QUERY_RFCOMM_CHANNEL: 339 hsp_state = HSP_W4_SDP_EVENT_QUERY_COMPLETE; 340 sdp_query_rfcomm_channel_and_name_for_uuid(&handle_query_rfcomm_event, remote, SDP_Headset_AG); 341 break; 342 343 case HSP_W2_CONNECT_SCO: 344 hsp_state = HSP_W4_SCO_CONNECTED; 345 break; 346 347 case HSP_W2_DISCONNECT_SCO: 348 hsp_state = HSP_W4_SCO_DISCONNECTED; 349 break; 350 351 case HSP_ACTIVE: 352 353 if (hs_microphone_gain >= 0){ 354 int gain = hs_microphone_gain; 355 hs_microphone_gain = -1; 356 char buffer[20]; 357 sprintf(buffer, "%s=%d\r\n", HSP_HS_MICROPHONE_GAIN, gain); 358 err = hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer); 359 if (err) { 360 hs_microphone_gain = gain; 361 } 362 break; 363 } 364 365 if (hs_speaker_gain >= 0){ 366 int gain = hs_speaker_gain; 367 hs_speaker_gain = -1; 368 char buffer[20]; 369 sprintf(buffer, "%s=%d\r\n", HSP_HS_SPEAKER_GAIN, gain); 370 err = hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer); 371 if (err) { 372 hs_speaker_gain = gain; 373 } 374 break; 375 } 376 377 break; 378 default: 379 break; 380 } 381 } 382 383 384 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 385 // printf("packet_handler type %u, packet[0] %x\n", packet_type, packet[0]); 386 if (packet_type == RFCOMM_DATA_PACKET){ 387 // skip over leading newline 388 while (size > 0 && (packet[0] == '\n' || packet[0] == '\r')){ 389 size--; 390 packet++; 391 } 392 if (strncmp((char *)packet, HSP_AG_RING, strlen(HSP_AG_RING)) == 0){ 393 emit_ring_event(); 394 } else if (strncmp((char *)packet, HSP_AG_OK, strlen(HSP_AG_OK)) == 0){ 395 printf("OK RECEIVED\n"); 396 switch (hsp_state){ 397 case HSP_W4_RFCOMM_CONNECTED: 398 hsp_state = HSP_W2_CONNECT_SCO; 399 break; 400 case HSP_W4_USER_ACTION: 401 hsp_state = HSP_W2_DISCONNECT_SCO; 402 break; 403 default: 404 break; 405 } 406 } else if (strncmp((char *)packet, HSP_MICROPHONE_GAIN, strlen(HSP_MICROPHONE_GAIN)) == 0){ 407 uint8_t gain = (uint8_t)atoi((char*)&packet[strlen(HSP_MICROPHONE_GAIN)]); 408 emit_event(HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED, gain); 409 410 } else if (strncmp((char *)packet, HSP_SPEAKER_GAIN, strlen(HSP_SPEAKER_GAIN)) == 0){ 411 uint8_t gain = (uint8_t)atoi((char*)&packet[strlen(HSP_SPEAKER_GAIN)]); 412 emit_event(HSP_SUBEVENT_SPEAKER_GAIN_CHANGED, gain); 413 } else { 414 if (!hsp_hs_callback) return; 415 // strip trailing newline 416 while (size > 0 && (packet[size-1] == '\n' || packet[size-1] == '\r')){ 417 size--; 418 } 419 // add trailing \0 420 packet[size] = 0; 421 // re-use incoming buffer to avoid reserving large buffers - ugly but efficient 422 uint8_t * event = packet - 4; 423 event[0] = HCI_EVENT_HSP_META; 424 event[1] = size + 2; 425 event[2] = HSP_SUBEVENT_AG_INDICATION; 426 event[3] = size; 427 (*hsp_hs_callback)(event, size+4); 428 } 429 hsp_run(); 430 return; 431 } 432 433 if (packet_type != HCI_EVENT_PACKET) return; 434 uint8_t event = packet[0]; 435 bd_addr_t event_addr; 436 uint16_t handle; 437 438 switch (event) { 439 case BTSTACK_EVENT_STATE: 440 // bt stack activated, get started 441 if (packet[2] == HCI_STATE_WORKING){ 442 printf("BTstack activated, get started .\n"); 443 } 444 hsp_hs_callback(packet, size); 445 break; 446 447 case HCI_EVENT_PIN_CODE_REQUEST: 448 // inform about pin code request 449 printf("Pin code request - using '0000'\n\r"); 450 reverse_bd_addr(&packet[2], event_addr); 451 hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000"); 452 break; 453 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE:{ 454 int index = 2; 455 uint8_t status = packet[index++]; 456 sco_handle = little_endian_read_16(packet, index); 457 index+=2; 458 bd_addr_t address; 459 memcpy(address, &packet[index], 6); 460 index+=6; 461 uint8_t link_type = packet[index++]; 462 uint8_t transmission_interval = packet[index++]; // measured in slots 463 uint8_t retransmission_interval = packet[index++];// measured in slots 464 uint16_t rx_packet_length = little_endian_read_16(packet, index); // measured in bytes 465 index+=2; 466 uint16_t tx_packet_length = little_endian_read_16(packet, index); // measured in bytes 467 index+=2; 468 uint8_t air_mode = packet[index]; 469 470 if (status != 0){ 471 log_error("(e)SCO Connection failed, status %u", status); 472 emit_event_audio_connected(status, sco_handle); 473 break; 474 } 475 switch (link_type){ 476 case 0x00: 477 printf("SCO Connection established. \n"); 478 if (transmission_interval != 0) log_error("SCO Connection: transmission_interval not zero: %d.", transmission_interval); 479 if (retransmission_interval != 0) log_error("SCO Connection: retransmission_interval not zero: %d.", retransmission_interval); 480 if (rx_packet_length != 0) log_error("SCO Connection: rx_packet_length not zero: %d.", rx_packet_length); 481 if (tx_packet_length != 0) log_error("SCO Connection: tx_packet_length not zero: %d.", tx_packet_length); 482 break; 483 case 0x02: 484 printf("eSCO Connection established. \n"); 485 break; 486 default: 487 log_error("(e)SCO reserved link_type 0x%2x", link_type); 488 break; 489 } 490 log_info("sco_handle 0x%2x, address %s, transmission_interval %u slots, retransmission_interval %u slots, " 491 " rx_packet_length %u bytes, tx_packet_length %u bytes, air_mode 0x%2x (0x02 == CVSD)", sco_handle, 492 bd_addr_to_str(address), transmission_interval, retransmission_interval, rx_packet_length, tx_packet_length, air_mode); 493 494 if (hsp_state == HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN){ 495 hsp_state = HSP_W2_DISCONNECT_SCO; 496 break; 497 } 498 499 // forward event to app 500 hsp_hs_callback(packet, size); 501 502 hsp_state = HSP_ACTIVE; 503 emit_event_audio_connected(0, sco_handle); 504 break; 505 } 506 507 case RFCOMM_EVENT_INCOMING_CONNECTION: 508 // data: event (8), len(8), address(48), channel (8), rfcomm_cid (16) 509 if (hsp_state != HSP_IDLE) return; 510 511 reverse_bd_addr(&packet[2], event_addr); 512 rfcomm_cid = little_endian_read_16(packet, 9); 513 printf("RFCOMM channel %u requested for %s\n", packet[8], bd_addr_to_str(event_addr)); 514 rfcomm_accept_connection(rfcomm_cid); 515 516 hsp_state = HSP_W4_RFCOMM_CONNECTED; 517 break; 518 519 case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE: 520 printf("RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE packet_handler type %u, packet[0] %x\n", packet_type, packet[0]); 521 // data: event(8), len(8), status (8), address (48), handle(16), server channel(8), rfcomm_cid(16), max frame size(16) 522 if (packet[2]) { 523 printf("RFCOMM channel open failed, status %u\n", packet[2]); 524 hsp_hs_reset_state(); 525 emit_event(HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE, packet[2]); 526 hs_outgoing_connection = 0; 527 } else { 528 // data: event(8) , len(8), status (8), address (48), handle (16), server channel(8), rfcomm_cid(16), max frame size(16) 529 rfcomm_handle = little_endian_read_16(packet, 9); 530 rfcomm_cid = little_endian_read_16(packet, 12); 531 mtu = little_endian_read_16(packet, 14); 532 printf("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n", rfcomm_cid, mtu); 533 534 if (hs_outgoing_connection){ 535 hs_outgoing_connection = 0; 536 hs_send_button_press = 1; 537 } 538 539 switch (hsp_state){ 540 case HSP_W4_RFCOMM_CONNECTED: 541 hsp_state = HSP_W2_CONNECT_SCO; 542 break; 543 case HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN: 544 hsp_state = HSP_W2_DISCONNECT_RFCOMM; 545 break; 546 default: 547 break; 548 } 549 } 550 break; 551 552 case RFCOMM_EVENT_CAN_SEND_NOW: 553 hsp_hs_callback(packet, size); 554 break; 555 556 case HCI_EVENT_DISCONNECTION_COMPLETE: 557 handle = little_endian_read_16(packet,3); 558 if (handle == sco_handle){ 559 sco_handle = 0; 560 hsp_state = HSP_W2_DISCONNECT_RFCOMM; 561 printf(" HSP_W2_DISCONNECT_RFCOMM\n"); 562 break; 563 } 564 break; 565 case RFCOMM_EVENT_CHANNEL_CLOSED: 566 printf("RFCOMM channel closed\n"); 567 hsp_hs_reset_state(); 568 emit_event(HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE,0); 569 break; 570 default: 571 break; 572 } 573 hsp_run(); 574 } 575 576 static void handle_query_rfcomm_event(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 577 switch (packet[0]){ 578 case SDP_EVENT_QUERY_RFCOMM_SERVICE: 579 channel_nr = sdp_event_query_rfcomm_service_get_rfcomm_channel(packet); 580 printf("** Service name: '%s', RFCOMM port %u\n", sdp_event_query_rfcomm_service_get_name(packet), channel_nr); 581 break; 582 case SDP_EVENT_QUERY_COMPLETE: 583 if (channel_nr > 0){ 584 hsp_state = HSP_W4_RFCOMM_CONNECTED; 585 printf("RFCOMM create channel.\n"); 586 rfcomm_create_channel(packet_handler, remote, channel_nr, NULL); 587 break; 588 } 589 hsp_hs_reset_state(); 590 printf("Service not found, status %u.\n", sdp_event_query_complete_get_status(packet)); 591 exit(0); 592 break; 593 } 594 } 595 596 void hsp_hs_send_button_press(void){ 597 hs_send_button_press = 1; 598 hsp_run(); 599 } 600