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 Headset (!! 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 "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, 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_support_custom_indications(int enable){ 160 hs_support_custom_indications = enable; 161 } 162 163 // When support custom commands is enabled, AG will send HSP_SUBEVENT_HS_COMMAND. 164 // On occurance of this event, client's packet handler must send the result back 165 // by calling hsp_hs_send_result function. 166 int hsp_hs_send_result(char * result){ 167 if (!hs_support_custom_indications) return 1; 168 return hsp_hs_send_str_over_rfcomm(rfcomm_cid, result); 169 } 170 171 172 void hsp_hs_create_service(uint8_t * service, uint32_t service_record_handle, int rfcomm_channel_nr, const char * name, uint8_t have_remote_audio_control){ 173 uint8_t* attribute; 174 de_create_sequence(service); 175 176 // 0x0000 "Service Record Handle" 177 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceRecordHandle); 178 de_add_number(service, DE_UINT, DE_SIZE_32, service_record_handle); 179 180 // 0x0001 "Service Class ID List" 181 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ServiceClassIDList); 182 attribute = de_push_sequence(service); 183 { 184 // see Bluetooth Erratum #3507 185 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_HSP); // 0x1108 186 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_Headset_HS); // 0x1131 187 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_GenericAudio); // 0x1203 188 } 189 de_pop_sequence(service, attribute); 190 191 // 0x0004 "Protocol Descriptor List" 192 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_ProtocolDescriptorList); 193 attribute = de_push_sequence(service); 194 { 195 uint8_t* l2cpProtocol = de_push_sequence(attribute); 196 { 197 de_add_number(l2cpProtocol, DE_UUID, DE_SIZE_16, SDP_L2CAPProtocol); 198 } 199 de_pop_sequence(attribute, l2cpProtocol); 200 201 uint8_t* rfcomm = de_push_sequence(attribute); 202 { 203 de_add_number(rfcomm, DE_UUID, DE_SIZE_16, SDP_RFCOMMProtocol); // rfcomm_service 204 de_add_number(rfcomm, DE_UINT, DE_SIZE_8, rfcomm_channel_nr); // rfcomm channel 205 } 206 de_pop_sequence(attribute, rfcomm); 207 } 208 de_pop_sequence(service, attribute); 209 210 // 0x0005 "Public Browse Group" 211 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BrowseGroupList); // public browse group 212 attribute = de_push_sequence(service); 213 { 214 de_add_number(attribute, DE_UUID, DE_SIZE_16, SDP_PublicBrowseGroup); 215 } 216 de_pop_sequence(service, attribute); 217 218 // 0x0009 "Bluetooth Profile Descriptor List" 219 de_add_number(service, DE_UINT, DE_SIZE_16, SDP_BluetoothProfileDescriptorList); 220 attribute = de_push_sequence(service); 221 { 222 uint8_t *hsp_profile = de_push_sequence(attribute); 223 { 224 de_add_number(hsp_profile, DE_UUID, DE_SIZE_16, SDP_HSP); 225 de_add_number(hsp_profile, DE_UINT, DE_SIZE_16, 0x0102); // Verision 1.2 226 } 227 de_pop_sequence(attribute, hsp_profile); 228 } 229 de_pop_sequence(service, attribute); 230 231 // 0x0100 "Service Name" 232 de_add_number(service, DE_UINT, DE_SIZE_16, 0x0100); 233 if (name){ 234 de_add_data(service, DE_STRING, strlen(name), (uint8_t *) name); 235 } else { 236 de_add_data(service, DE_STRING, strlen(default_hsp_hs_service_name), (uint8_t *) default_hsp_hs_service_name); 237 } 238 239 // Remote audio volume control 240 de_add_number(service, DE_UINT, DE_SIZE_16, 0x030C); 241 de_add_number(service, DE_BOOL, DE_SIZE_8, have_remote_audio_control); 242 } 243 244 static void hsp_hs_reset_state(void){ 245 hsp_state = HSP_IDLE; 246 247 rfcomm_cid = 0; 248 rfcomm_handle = 0; 249 sco_handle = 0; 250 251 hs_microphone_gain = -1; 252 hs_speaker_gain = -1; 253 254 hs_send_button_press = 0; 255 hs_support_custom_indications = 0; 256 } 257 258 void hsp_hs_init(uint8_t rfcomm_channel_nr){ 259 // register for HCI events 260 hci_event_callback_registration.callback = &packet_handler; 261 hci_add_event_handler(&hci_event_callback_registration); 262 263 // init L2CAP 264 l2cap_init(); 265 266 rfcomm_init(); 267 rfcomm_register_service(packet_handler, rfcomm_channel_nr, 0xffff); // reserved channel, mtu limited by l2cap 268 269 sdp_query_rfcomm_register_callback(handle_query_rfcomm_event); 270 271 hsp_hs_reset_state(); 272 } 273 274 275 void hsp_hs_connect(bd_addr_t bd_addr){ 276 if (hsp_state != HSP_IDLE) return; 277 hs_outgoing_connection = 1; 278 hsp_state = HSP_SDP_QUERY_RFCOMM_CHANNEL; 279 memcpy(remote, bd_addr, 6); 280 hsp_run(); 281 } 282 283 void hsp_hs_disconnect(bd_addr_t bd_addr){ 284 switch (hsp_state){ 285 case HSP_ACTIVE: 286 printf("HSP_W4_USER_ACTION\n"); 287 hsp_state = HSP_W4_USER_ACTION; 288 hs_send_button_press = 1; 289 break; 290 case HSP_W4_RFCOMM_CONNECTED: 291 printf("HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN \n"); 292 hsp_state = HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN; 293 break; 294 default: 295 return; 296 } 297 hsp_run(); 298 } 299 300 301 void hsp_hs_set_microphone_gain(uint8_t gain){ 302 if (gain < 0 || gain >15) { 303 printf("Gain must be in interval [0..15], it is given %d\n", gain); 304 return; 305 } 306 hs_microphone_gain = gain; 307 hsp_run(); 308 } 309 310 // AG +VGS=5 [0..15] ; HS AT+VGM=6 | AG OK 311 void hsp_hs_set_speaker_gain(uint8_t gain){ 312 if (gain < 0 || gain >15) { 313 printf("Gain must be in interval [0..15], it is given %d\n", gain); 314 return; 315 } 316 hs_speaker_gain = gain; 317 hsp_run(); 318 } 319 320 321 static void hsp_run(void){ 322 int err; 323 324 if (hs_send_button_press){ 325 hs_send_button_press = 0; 326 err = hsp_hs_send_str_over_rfcomm(rfcomm_cid, HSP_HS_AT_CKPD); 327 if (err) { 328 hs_send_button_press = 1; 329 } 330 return; 331 } 332 333 switch (hsp_state){ 334 case HSP_SDP_QUERY_RFCOMM_CHANNEL: 335 hsp_state = HSP_W4_SDP_EVENT_QUERY_COMPLETE; 336 sdp_query_rfcomm_channel_and_name_for_uuid(remote, SDP_Headset_AG); 337 break; 338 339 case HSP_W2_CONNECT_SCO: 340 hsp_state = HSP_W4_SCO_CONNECTED; 341 break; 342 343 case HSP_W2_DISCONNECT_SCO: 344 hsp_state = HSP_W4_SCO_DISCONNECTED; 345 break; 346 347 case HSP_ACTIVE: 348 349 if (hs_microphone_gain >= 0){ 350 int gain = hs_microphone_gain; 351 hs_microphone_gain = -1; 352 char buffer[20]; 353 sprintf(buffer, "%s=%d\r\n", HSP_HS_MICROPHONE_GAIN, gain); 354 err = hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer); 355 if (err) { 356 hs_microphone_gain = gain; 357 } 358 break; 359 } 360 361 if (hs_speaker_gain >= 0){ 362 int gain = hs_speaker_gain; 363 hs_speaker_gain = -1; 364 char buffer[20]; 365 sprintf(buffer, "%s=%d\r\n", HSP_HS_SPEAKER_GAIN, gain); 366 err = hsp_hs_send_str_over_rfcomm(rfcomm_cid, buffer); 367 if (err) { 368 hs_speaker_gain = gain; 369 } 370 break; 371 } 372 373 break; 374 default: 375 break; 376 } 377 } 378 379 380 static void packet_handler (uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 381 // printf("packet_handler type %u, packet[0] %x\n", packet_type, packet[0]); 382 if (packet_type == RFCOMM_DATA_PACKET){ 383 // skip over leading newline 384 while (size > 0 && (packet[0] == '\n' || packet[0] == '\r')){ 385 size--; 386 packet++; 387 } 388 if (strncmp((char *)packet, HSP_AG_RING, strlen(HSP_AG_RING)) == 0){ 389 emit_event(HSP_SUBEVENT_RING, 0); 390 } else if (strncmp((char *)packet, HSP_AG_OK, strlen(HSP_AG_OK)) == 0){ 391 printf("OK RECEIVED\n"); 392 switch (hsp_state){ 393 case HSP_W4_RFCOMM_CONNECTED: 394 hsp_state = HSP_W2_CONNECT_SCO; 395 break; 396 case HSP_W4_USER_ACTION: 397 hsp_state = HSP_W2_DISCONNECT_SCO; 398 break; 399 default: 400 break; 401 } 402 } else if (strncmp((char *)packet, HSP_MICROPHONE_GAIN, strlen(HSP_MICROPHONE_GAIN)) == 0){ 403 uint8_t gain = (uint8_t)atoi((char*)&packet[strlen(HSP_MICROPHONE_GAIN)]); 404 emit_event(HSP_SUBEVENT_MICROPHONE_GAIN_CHANGED, gain); 405 406 } else if (strncmp((char *)packet, HSP_SPEAKER_GAIN, strlen(HSP_SPEAKER_GAIN)) == 0){ 407 uint8_t gain = (uint8_t)atoi((char*)&packet[strlen(HSP_SPEAKER_GAIN)]); 408 emit_event(HSP_SUBEVENT_SPEAKER_GAIN_CHANGED, gain); 409 } else { 410 if (!hsp_hs_callback) return; 411 // strip trailing newline 412 while (size > 0 && (packet[size-1] == '\n' || packet[size-1] == '\r')){ 413 size--; 414 } 415 // add trailing \0 416 packet[size] = 0; 417 // re-use incoming buffer to avoid reserving large buffers - ugly but efficient 418 uint8_t * event = packet - 3; 419 event[0] = HCI_EVENT_HSP_META; 420 event[1] = size + 1; 421 event[2] = HSP_SUBEVENT_AG_INDICATION; 422 (*hsp_hs_callback)(event, size+3); 423 } 424 hsp_run(); 425 return; 426 } 427 428 if (packet_type != HCI_EVENT_PACKET) return; 429 uint8_t event = packet[0]; 430 bd_addr_t event_addr; 431 uint16_t handle; 432 433 switch (event) { 434 case BTSTACK_EVENT_STATE: 435 // bt stack activated, get started 436 if (packet[2] == HCI_STATE_WORKING){ 437 printf("BTstack activated, get started .\n"); 438 } 439 hsp_hs_callback(packet, size); 440 break; 441 442 case HCI_EVENT_PIN_CODE_REQUEST: 443 // inform about pin code request 444 printf("Pin code request - using '0000'\n\r"); 445 reverse_bd_addr(&packet[2], event_addr); 446 hci_send_cmd(&hci_pin_code_request_reply, &event_addr, 4, "0000"); 447 break; 448 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE:{ 449 int index = 2; 450 uint8_t status = packet[index++]; 451 sco_handle = little_endian_read_16(packet, index); 452 index+=2; 453 bd_addr_t address; 454 memcpy(address, &packet[index], 6); 455 index+=6; 456 uint8_t link_type = packet[index++]; 457 uint8_t transmission_interval = packet[index++]; // measured in slots 458 uint8_t retransmission_interval = packet[index++];// measured in slots 459 uint16_t rx_packet_length = little_endian_read_16(packet, index); // measured in bytes 460 index+=2; 461 uint16_t tx_packet_length = little_endian_read_16(packet, index); // measured in bytes 462 index+=2; 463 uint8_t air_mode = packet[index]; 464 465 if (status != 0){ 466 log_error("(e)SCO Connection failed, status %u", status); 467 emit_event_audio_connected(status, sco_handle); 468 break; 469 } 470 switch (link_type){ 471 case 0x00: 472 printf("SCO Connection established. \n"); 473 if (transmission_interval != 0) log_error("SCO Connection: transmission_interval not zero: %d.", transmission_interval); 474 if (retransmission_interval != 0) log_error("SCO Connection: retransmission_interval not zero: %d.", retransmission_interval); 475 if (rx_packet_length != 0) log_error("SCO Connection: rx_packet_length not zero: %d.", rx_packet_length); 476 if (tx_packet_length != 0) log_error("SCO Connection: tx_packet_length not zero: %d.", tx_packet_length); 477 break; 478 case 0x02: 479 printf("eSCO Connection established. \n"); 480 break; 481 default: 482 log_error("(e)SCO reserved link_type 0x%2x", link_type); 483 break; 484 } 485 log_info("sco_handle 0x%2x, address %s, transmission_interval %u slots, retransmission_interval %u slots, " 486 " rx_packet_length %u bytes, tx_packet_length %u bytes, air_mode 0x%2x (0x02 == CVSD)", sco_handle, 487 bd_addr_to_str(address), transmission_interval, retransmission_interval, rx_packet_length, tx_packet_length, air_mode); 488 489 if (hsp_state == HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN){ 490 hsp_state = HSP_W2_DISCONNECT_SCO; 491 break; 492 } 493 494 // forward event to app 495 hsp_hs_callback(packet, size); 496 497 hsp_state = HSP_ACTIVE; 498 emit_event_audio_connected(0, sco_handle); 499 break; 500 } 501 502 case RFCOMM_EVENT_INCOMING_CONNECTION: 503 // data: event (8), len(8), address(48), channel (8), rfcomm_cid (16) 504 if (hsp_state != HSP_IDLE) return; 505 506 reverse_bd_addr(&packet[2], event_addr); 507 rfcomm_cid = little_endian_read_16(packet, 9); 508 printf("RFCOMM channel %u requested for %s\n", packet[8], bd_addr_to_str(event_addr)); 509 rfcomm_accept_connection(rfcomm_cid); 510 511 hsp_state = HSP_W4_RFCOMM_CONNECTED; 512 break; 513 514 case RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE: 515 printf("RFCOMM_EVENT_OPEN_CHANNEL_COMPLETE packet_handler type %u, packet[0] %x\n", packet_type, packet[0]); 516 // data: event(8), len(8), status (8), address (48), handle(16), server channel(8), rfcomm_cid(16), max frame size(16) 517 if (packet[2]) { 518 printf("RFCOMM channel open failed, status %u\n", packet[2]); 519 hsp_hs_reset_state(); 520 emit_event(HSP_SUBEVENT_AUDIO_CONNECTION_COMPLETE, packet[2]); 521 hs_outgoing_connection = 0; 522 } else { 523 // data: event(8) , len(8), status (8), address (48), handle (16), server channel(8), rfcomm_cid(16), max frame size(16) 524 rfcomm_handle = little_endian_read_16(packet, 9); 525 rfcomm_cid = little_endian_read_16(packet, 12); 526 mtu = little_endian_read_16(packet, 14); 527 printf("RFCOMM channel open succeeded. New RFCOMM Channel ID %u, max frame size %u\n", rfcomm_cid, mtu); 528 529 if (hs_outgoing_connection){ 530 hs_outgoing_connection = 0; 531 hs_send_button_press = 1; 532 } 533 534 switch (hsp_state){ 535 case HSP_W4_RFCOMM_CONNECTED: 536 hsp_state = HSP_W2_CONNECT_SCO; 537 break; 538 case HSP_W4_CONNECTION_ESTABLISHED_TO_SHUTDOWN: 539 hsp_state = HSP_W2_DISCONNECT_RFCOMM; 540 break; 541 default: 542 break; 543 } 544 } 545 break; 546 547 case RFCOMM_EVENT_CAN_SEND_NOW: 548 hsp_hs_callback(packet, size); 549 break; 550 551 case HCI_EVENT_DISCONNECTION_COMPLETE: 552 printf("HCI_EVENT_DISCONNECTION_COMPLETE \n"); 553 // if (hsp_state != HSP_W4_SCO_DISCONNECTED){ 554 // printf("received gap disconnect in wrong hsp state\n"); 555 // } 556 handle = little_endian_read_16(packet,3); 557 if (handle == sco_handle){ 558 sco_handle = 0; 559 hsp_state = HSP_W2_DISCONNECT_RFCOMM; 560 printf(" HSP_W2_DISCONNECT_RFCOMM\n"); 561 break; 562 } 563 break; 564 case RFCOMM_EVENT_CHANNEL_CLOSED: 565 printf("RFCOMM_EVENT_CHANNEL_CLOSED\n"); 566 // if (hsp_state != HSP_W4_RFCOMM_DISCONNECTED){ 567 // printf("received RFCOMM disconnect in wrong hsp state\n"); 568 // } 569 printf("RFCOMM channel closed\n"); 570 hsp_hs_reset_state(); 571 emit_event(HSP_SUBEVENT_AUDIO_DISCONNECTION_COMPLETE,0); 572 break; 573 default: 574 break; 575 } 576 hsp_run(); 577 } 578 579 static void handle_query_rfcomm_event(uint8_t packet_type, uint8_t *packet, uint16_t size){ 580 switch (packet[0]){ 581 case SDP_EVENT_QUERY_RFCOMM_SERVICE: 582 channel_nr = sdp_event_query_rfcomm_service_get_rfcomm_channel(packet); 583 printf("** Service name: '%s', RFCOMM port %u\n", sdp_event_query_rfcomm_service_get_name(packet), channel_nr); 584 break; 585 case SDP_EVENT_QUERY_COMPLETE: 586 if (channel_nr > 0){ 587 hsp_state = HSP_W4_RFCOMM_CONNECTED; 588 printf("RFCOMM create channel.\n"); 589 rfcomm_create_channel(packet_handler, remote, channel_nr, NULL); 590 break; 591 } 592 hsp_hs_reset_state(); 593 printf("Service not found, status %u.\n", sdp_event_query_complete_get_status(packet)); 594 exit(0); 595 break; 596 } 597 } 598 599 void hsp_hs_press_button(void){ 600 hs_send_button_press = 1; 601 hsp_run(); 602 } 603