1 /* 2 * Copyright (C) 2009 by Matthias Ringwald 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 * 17 * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 19 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 20 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 21 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 23 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 24 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 25 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 26 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 27 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 * 30 */ 31 32 /* 33 * hci.c 34 * 35 * Created by Matthias Ringwald on 4/29/09. 36 * 37 */ 38 39 #include "../config.h" 40 41 #include "hci.h" 42 43 #include <stdarg.h> 44 #include <string.h> 45 #include <stdio.h> 46 47 #ifndef EMBEDDED 48 #include <unistd.h> // gethostbyname 49 #endif 50 51 #include "btstack_memory.h" 52 #include "debug.h" 53 #include "hci_dump.h" 54 55 #include <btstack/hci_cmds.h> 56 #include <btstack/version.h> 57 58 // tmpe 59 #include "l2cap.h" 60 61 #define HCI_CONNECTION_TIMEOUT_MS 10000 62 63 #ifdef USE_BLUETOOL 64 #include "bt_control_iphone.h" 65 #endif 66 67 // the STACK is here 68 static hci_stack_t hci_stack; 69 70 /** 71 * get connection for a given handle 72 * 73 * @return connection OR NULL, if not found 74 */ 75 hci_connection_t * connection_for_handle(hci_con_handle_t con_handle){ 76 linked_item_t *it; 77 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 78 if ( ((hci_connection_t *) it)->con_handle == con_handle){ 79 return (hci_connection_t *) it; 80 } 81 } 82 return NULL; 83 } 84 85 static void hci_connection_timeout_handler(timer_source_t *timer){ 86 hci_connection_t * connection = linked_item_get_user(&timer->item); 87 #ifdef HAVE_TIME 88 struct timeval tv; 89 gettimeofday(&tv, NULL); 90 if (tv.tv_sec >= connection->timestamp.tv_sec + HCI_CONNECTION_TIMEOUT_MS/1000) { 91 // connections might be timed out 92 hci_emit_l2cap_check_timeout(connection); 93 } 94 #endif 95 #ifdef HAVE_TICK 96 if (embedded_get_ticks() > connection->timestamp + embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 97 // connections might be timed out 98 hci_emit_l2cap_check_timeout(connection); 99 } 100 #endif 101 run_loop_set_timer(timer, HCI_CONNECTION_TIMEOUT_MS); 102 run_loop_add_timer(timer); 103 } 104 105 static void hci_connection_timestamp(hci_connection_t *connection){ 106 #ifdef HAVE_TIME 107 gettimeofday(&connection->timestamp, NULL); 108 #endif 109 #ifdef HAVE_TICK 110 connection->timestamp = embedded_get_ticks(); 111 #endif 112 } 113 114 /** 115 * create connection for given address 116 * 117 * @return connection OR NULL, if no memory left 118 */ 119 static hci_connection_t * create_connection_for_addr(bd_addr_t addr){ 120 hci_connection_t * conn = btstack_memory_hci_connection_get(); 121 if (!conn) return NULL; 122 BD_ADDR_COPY(conn->address, addr); 123 conn->con_handle = 0xffff; 124 conn->authentication_flags = AUTH_FLAGS_NONE; 125 linked_item_set_user(&conn->timeout.item, conn); 126 conn->timeout.process = hci_connection_timeout_handler; 127 hci_connection_timestamp(conn); 128 conn->acl_recombination_length = 0; 129 conn->acl_recombination_pos = 0; 130 conn->num_acl_packets_sent = 0; 131 linked_list_add(&hci_stack.connections, (linked_item_t *) conn); 132 return conn; 133 } 134 135 /** 136 * get connection for given address 137 * 138 * @return connection OR NULL, if not found 139 */ 140 static hci_connection_t * connection_for_address(bd_addr_t address){ 141 linked_item_t *it; 142 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 143 if ( ! BD_ADDR_CMP( ((hci_connection_t *) it)->address, address) ){ 144 return (hci_connection_t *) it; 145 } 146 } 147 return NULL; 148 } 149 150 /** 151 * add authentication flags and reset timer 152 */ 153 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 154 bd_addr_t addr; 155 bt_flip_addr(addr, *(bd_addr_t *) bd_addr); 156 hci_connection_t * conn = connection_for_address(addr); 157 if (conn) { 158 conn->authentication_flags |= flags; 159 hci_connection_timestamp(conn); 160 } 161 } 162 163 int hci_authentication_active_for_handle(hci_con_handle_t handle){ 164 hci_connection_t * conn = connection_for_handle(handle); 165 if (!conn) return 0; 166 if (!conn->authentication_flags) return 0; 167 if (conn->authentication_flags & SENT_LINK_KEY_REPLY) return 0; 168 if (conn->authentication_flags & RECV_LINK_KEY_NOTIFICATION) return 0; 169 return 1; 170 } 171 172 void hci_drop_link_key_for_bd_addr(bd_addr_t *addr){ 173 if (hci_stack.remote_device_db) { 174 hci_stack.remote_device_db->delete_link_key(addr); 175 } 176 } 177 178 179 /** 180 * count connections 181 */ 182 static int nr_hci_connections(void){ 183 int count = 0; 184 linked_item_t *it; 185 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next, count++); 186 return count; 187 } 188 189 /** 190 * Dummy handler called by HCI 191 */ 192 static void dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 193 } 194 195 uint8_t hci_number_outgoing_packets(hci_con_handle_t handle){ 196 hci_connection_t * connection = connection_for_handle(handle); 197 if (!connection) { 198 log_error("hci_number_outgoing_packets connectino for handle %u does not exist!\n", handle); 199 return 0; 200 } 201 return connection->num_acl_packets_sent; 202 } 203 204 uint8_t hci_number_free_acl_slots(){ 205 uint8_t free_slots = hci_stack.total_num_acl_packets; 206 linked_item_t *it; 207 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 208 hci_connection_t * connection = (hci_connection_t *) it; 209 if (free_slots < connection->num_acl_packets_sent) { 210 log_error("hci_number_free_acl_slots: sum of outgoing packets > total acl packets!\n"); 211 return 0; 212 } 213 free_slots -= connection->num_acl_packets_sent; 214 } 215 return free_slots; 216 } 217 218 int hci_can_send_packet_now(uint8_t packet_type){ 219 220 // check for async hci transport implementations 221 if (hci_stack.hci_transport->can_send_packet_now){ 222 if (!hci_stack.hci_transport->can_send_packet_now(packet_type)){ 223 return 0; 224 } 225 } 226 227 // check regular Bluetooth flow control 228 switch (packet_type) { 229 case HCI_ACL_DATA_PACKET: 230 return hci_number_free_acl_slots(); 231 case HCI_COMMAND_DATA_PACKET: 232 return hci_stack.num_cmd_packets; 233 default: 234 return 0; 235 } 236 } 237 238 int hci_send_acl_packet(uint8_t *packet, int size){ 239 240 // check for free places on BT module 241 if (!hci_number_free_acl_slots()) return BTSTACK_ACL_BUFFERS_FULL; 242 243 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 244 hci_connection_t *connection = connection_for_handle( con_handle); 245 if (!connection) return 0; 246 hci_connection_timestamp(connection); 247 248 // count packet 249 connection->num_acl_packets_sent++; 250 // log_info("hci_send_acl_packet - handle %u, sent %u\n", connection->con_handle, connection->num_acl_packets_sent); 251 252 // send packet 253 int err = hci_stack.hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 254 255 return err; 256 } 257 258 static void acl_handler(uint8_t *packet, int size){ 259 260 // get info 261 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 262 hci_connection_t *conn = connection_for_handle(con_handle); 263 uint8_t acl_flags = READ_ACL_FLAGS(packet); 264 uint16_t acl_length = READ_ACL_LENGTH(packet); 265 266 // ignore non-registered handle 267 if (!conn){ 268 log_error( "hci.c: acl_handler called with non-registered handle %u!\n" , con_handle); 269 return; 270 } 271 272 // update idle timestamp 273 hci_connection_timestamp(conn); 274 275 // handle different packet types 276 switch (acl_flags & 0x03) { 277 278 case 0x01: // continuation fragment 279 280 // sanity check 281 if (conn->acl_recombination_pos == 0) { 282 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x\n", con_handle); 283 return; 284 } 285 286 // append fragment payload (header already stored) 287 memcpy(&conn->acl_recombination_buffer[conn->acl_recombination_pos], &packet[4], acl_length ); 288 conn->acl_recombination_pos += acl_length; 289 290 // log_error( "ACL Cont Fragment: acl_len %u, combined_len %u, l2cap_len %u\n", acl_length, 291 // conn->acl_recombination_pos, conn->acl_recombination_length); 292 293 // forward complete L2CAP packet if complete. 294 if (conn->acl_recombination_pos >= conn->acl_recombination_length + 4 + 4){ // pos already incl. ACL header 295 296 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, conn->acl_recombination_buffer, conn->acl_recombination_pos); 297 // reset recombination buffer 298 conn->acl_recombination_length = 0; 299 conn->acl_recombination_pos = 0; 300 } 301 break; 302 303 case 0x02: { // first fragment 304 305 // sanity check 306 if (conn->acl_recombination_pos) { 307 log_error( "ACL First Fragment but data in buffer for handle 0x%02x\n", con_handle); 308 return; 309 } 310 311 // peek into L2CAP packet! 312 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 313 314 // log_error( "ACL First Fragment: acl_len %u, l2cap_len %u\n", acl_length, l2cap_length); 315 316 // compare fragment size to L2CAP packet size 317 if (acl_length >= l2cap_length + 4){ 318 319 // forward fragment as L2CAP packet 320 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, packet, acl_length + 4); 321 322 } else { 323 // store first fragment and tweak acl length for complete package 324 memcpy(conn->acl_recombination_buffer, packet, acl_length + 4); 325 conn->acl_recombination_pos = acl_length + 4; 326 conn->acl_recombination_length = l2cap_length; 327 bt_store_16(conn->acl_recombination_buffer, 2, l2cap_length +4); 328 } 329 break; 330 331 } 332 default: 333 log_error( "hci.c: acl_handler called with invalid packet boundary flags %u\n", acl_flags & 0x03); 334 return; 335 } 336 337 // execute main loop 338 hci_run(); 339 } 340 341 static void hci_shutdown_connection(hci_connection_t *conn){ 342 log_info("Connection closed: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 343 344 // cancel all l2cap connections 345 hci_emit_disconnection_complete(conn->con_handle, 0x16); // terminated by local host 346 347 run_loop_remove_timer(&conn->timeout); 348 349 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 350 btstack_memory_hci_connection_free( conn ); 351 352 // now it's gone 353 hci_emit_nr_connections_changed(); 354 } 355 356 static const uint16_t packet_type_sizes[] = { 357 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 358 HCI_ACL_DH1_SIZE, 0, 0, 0, 359 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 360 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 361 }; 362 363 static uint16_t hci_acl_packet_types_for_buffer_size(uint16_t buffer_size){ 364 uint16_t packet_types = 0; 365 int i; 366 for (i=0;i<16;i++){ 367 if (packet_type_sizes[i] == 0) continue; 368 if (packet_type_sizes[i] <= buffer_size){ 369 packet_types |= 1 << i; 370 } 371 } 372 // flip bits for "may not be used" 373 packet_types ^= 0x3306; 374 return packet_types; 375 } 376 377 uint16_t hci_usable_acl_packet_types(void){ 378 return hci_stack.packet_types; 379 } 380 381 uint8_t* hci_get_outgoing_acl_packet_buffer(void){ 382 // hci packet buffer is >= acl data packet length 383 return hci_stack.hci_packet_buffer; 384 } 385 386 uint16_t hci_max_acl_data_packet_length(){ 387 return hci_stack.acl_data_packet_length; 388 } 389 390 // avoid huge local variables 391 #ifndef EMBEDDED 392 static device_name_t device_name; 393 #endif 394 static void event_handler(uint8_t *packet, int size){ 395 bd_addr_t addr; 396 uint8_t link_type; 397 hci_con_handle_t handle; 398 hci_connection_t * conn; 399 int i; 400 401 switch (packet[0]) { 402 403 case HCI_EVENT_COMMAND_COMPLETE: 404 // get num cmd packets 405 // log_info("HCI_EVENT_COMMAND_COMPLETE cmds old %u - new %u\n", hci_stack.num_cmd_packets, packet[2]); 406 hci_stack.num_cmd_packets = packet[2]; 407 408 if (COMMAND_COMPLETE_EVENT(packet, hci_read_buffer_size)){ 409 // from offset 5 410 // status 411 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 412 hci_stack.acl_data_packet_length = READ_BT_16(packet, 6); 413 // ignore: SCO data packet len (8) 414 hci_stack.total_num_acl_packets = packet[9]; 415 // ignore: total num SCO packets 416 if (hci_stack.state == HCI_STATE_INITIALIZING){ 417 // determine usable ACL payload size 418 if (HCI_ACL_PAYLOAD_SIZE < hci_stack.acl_data_packet_length){ 419 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 420 } 421 // determine usable ACL packet types 422 hci_stack.packet_types = hci_acl_packet_types_for_buffer_size(hci_stack.acl_data_packet_length); 423 424 log_error("hci_read_buffer_size: used size %u, count %u, packet types %04x\n", 425 hci_stack.acl_data_packet_length, hci_stack.total_num_acl_packets, hci_stack.packet_types); 426 } 427 } 428 if (COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 429 hci_emit_discoverable_enabled(hci_stack.discoverable); 430 } 431 break; 432 433 case HCI_EVENT_COMMAND_STATUS: 434 // get num cmd packets 435 // log_info("HCI_EVENT_COMMAND_STATUS cmds - old %u - new %u\n", hci_stack.num_cmd_packets, packet[3]); 436 hci_stack.num_cmd_packets = packet[3]; 437 break; 438 439 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS: 440 for (i=0; i<packet[2];i++){ 441 handle = READ_BT_16(packet, 3 + 2*i); 442 uint16_t num_packets = READ_BT_16(packet, 3 + packet[2]*2 + 2*i); 443 conn = connection_for_handle(handle); 444 if (!conn){ 445 log_error("hci_number_completed_packet lists unused con handle %u\n", handle); 446 continue; 447 } 448 conn->num_acl_packets_sent -= num_packets; 449 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u\n", num_packets, handle, conn->num_acl_packets_sent); 450 } 451 break; 452 453 case HCI_EVENT_CONNECTION_REQUEST: 454 bt_flip_addr(addr, &packet[2]); 455 // TODO: eval COD 8-10 456 link_type = packet[11]; 457 log_info("Connection_incoming: %s, type %u\n", bd_addr_to_str(addr), link_type); 458 if (link_type == 1) { // ACL 459 conn = connection_for_address(addr); 460 if (!conn) { 461 conn = create_connection_for_addr(addr); 462 } 463 if (!conn) { 464 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 465 hci_stack.decline_reason = 0x0d; 466 BD_ADDR_COPY(hci_stack.decline_addr, addr); 467 break; 468 } 469 conn->state = RECEIVED_CONNECTION_REQUEST; 470 hci_run(); 471 } else { 472 // SYNCHRONOUS CONNECTION LIMIT TO A DEVICE EXCEEDED (0X0A) 473 hci_stack.decline_reason = 0x0a; 474 BD_ADDR_COPY(hci_stack.decline_addr, addr); 475 } 476 break; 477 478 case HCI_EVENT_CONNECTION_COMPLETE: 479 // Connection management 480 bt_flip_addr(addr, &packet[5]); 481 log_info("Connection_complete (status=%u) %s\n", packet[2], bd_addr_to_str(addr)); 482 conn = connection_for_address(addr); 483 if (conn) { 484 if (!packet[2]){ 485 conn->state = OPEN; 486 conn->con_handle = READ_BT_16(packet, 3); 487 488 // restart timer 489 run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 490 run_loop_add_timer(&conn->timeout); 491 492 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 493 494 hci_emit_nr_connections_changed(); 495 } else { 496 // connection failed, remove entry 497 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 498 btstack_memory_hci_connection_free( conn ); 499 500 // if authentication error, also delete link key 501 if (packet[2] == 0x05) { 502 hci_drop_link_key_for_bd_addr(&addr); 503 } 504 } 505 } 506 break; 507 508 case HCI_EVENT_LINK_KEY_REQUEST: 509 log_info("HCI_EVENT_LINK_KEY_REQUEST\n"); 510 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_REQUEST); 511 if (!hci_stack.remote_device_db) break; 512 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], HANDLE_LINK_KEY_REQUEST); 513 hci_run(); 514 // request already answered 515 return; 516 517 case HCI_EVENT_LINK_KEY_NOTIFICATION: 518 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_NOTIFICATION); 519 if (!hci_stack.remote_device_db) break; 520 bt_flip_addr(addr, &packet[2]); 521 hci_stack.remote_device_db->put_link_key(&addr, (link_key_t *) &packet[8]); 522 // still forward event to allow dismiss of pairing dialog 523 break; 524 525 case HCI_EVENT_PIN_CODE_REQUEST: 526 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_PIN_CODE_REQUEST); 527 break; 528 529 #ifndef EMBEDDED 530 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 531 if (!hci_stack.remote_device_db) break; 532 if (packet[2]) break; // status not ok 533 bt_flip_addr(addr, &packet[3]); 534 // fix for invalid remote names - terminate on 0xff 535 for (i=0; i<248;i++){ 536 if (packet[9+i] == 0xff){ 537 packet[9+i] = 0; 538 break; 539 } 540 } 541 memset(&device_name, 0, sizeof(device_name_t)); 542 strncpy((char*) device_name, (char*) &packet[9], 248); 543 hci_stack.remote_device_db->put_name(&addr, &device_name); 544 break; 545 546 case HCI_EVENT_INQUIRY_RESULT: 547 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 548 if (!hci_stack.remote_device_db) break; 549 // first send inq result packet 550 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 551 // then send cached remote names 552 for (i=0; i<packet[2];i++){ 553 bt_flip_addr(addr, &packet[3+i*6]); 554 if (hci_stack.remote_device_db->get_name(&addr, &device_name)){ 555 hci_emit_remote_name_cached(&addr, &device_name); 556 } 557 } 558 return; 559 #endif 560 561 case HCI_EVENT_DISCONNECTION_COMPLETE: 562 if (!packet[2]){ 563 handle = READ_BT_16(packet, 3); 564 hci_connection_t * conn = connection_for_handle(handle); 565 if (conn) { 566 hci_shutdown_connection(conn); 567 } 568 } 569 break; 570 571 case HCI_EVENT_HARDWARE_ERROR: 572 if(hci_stack.control->hw_error){ 573 (*hci_stack.control->hw_error)(); 574 } 575 break; 576 577 default: 578 break; 579 } 580 581 // handle BT initialization 582 if (hci_stack.state == HCI_STATE_INITIALIZING){ 583 // handle H4 synchronization loss on restart 584 // if (hci_stack.substate == 1 && packet[0] == HCI_EVENT_HARDWARE_ERROR){ 585 // hci_stack.substate = 0; 586 // } 587 // handle normal init sequence 588 if (hci_stack.substate % 2){ 589 // odd: waiting for event 590 if (packet[0] == HCI_EVENT_COMMAND_COMPLETE){ 591 hci_stack.substate++; 592 } 593 } 594 } 595 596 // help with BT sleep 597 if (hci_stack.state == HCI_STATE_FALLING_ASLEEP 598 && hci_stack.substate == 1 599 && COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 600 hci_stack.substate++; 601 } 602 603 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 604 605 // execute main loop 606 hci_run(); 607 } 608 609 void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 610 switch (packet_type) { 611 case HCI_EVENT_PACKET: 612 event_handler(packet, size); 613 break; 614 case HCI_ACL_DATA_PACKET: 615 acl_handler(packet, size); 616 break; 617 default: 618 break; 619 } 620 } 621 622 /** Register HCI packet handlers */ 623 void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){ 624 hci_stack.packet_handler = handler; 625 } 626 627 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t * remote_device_db){ 628 629 // reference to use transport layer implementation 630 hci_stack.hci_transport = transport; 631 632 // references to used control implementation 633 hci_stack.control = control; 634 635 // reference to used config 636 hci_stack.config = config; 637 638 // no connections yet 639 hci_stack.connections = NULL; 640 hci_stack.discoverable = 0; 641 642 // no pending cmds 643 hci_stack.decline_reason = 0; 644 hci_stack.new_scan_enable_value = 0xff; 645 646 // higher level handler 647 hci_stack.packet_handler = dummy_handler; 648 649 // store and open remote device db 650 hci_stack.remote_device_db = remote_device_db; 651 if (hci_stack.remote_device_db) { 652 hci_stack.remote_device_db->open(); 653 } 654 655 // max acl payload size defined in config.h 656 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 657 658 // register packet handlers with transport 659 transport->register_packet_handler(&packet_handler); 660 } 661 662 void hci_close(){ 663 // close remote device db 664 if (hci_stack.remote_device_db) { 665 hci_stack.remote_device_db->close(); 666 } 667 } 668 669 // State-Module-Driver overview 670 // state module low-level 671 // HCI_STATE_OFF off close 672 // HCI_STATE_INITIALIZING, on open 673 // HCI_STATE_WORKING, on open 674 // HCI_STATE_HALTING, on open 675 // HCI_STATE_SLEEPING, off/sleep close 676 // HCI_STATE_FALLING_ASLEEP on open 677 678 static int hci_power_control_on(void){ 679 680 // power on 681 int err = 0; 682 if (hci_stack.control && hci_stack.control->on){ 683 err = (*hci_stack.control->on)(hci_stack.config); 684 } 685 if (err){ 686 log_error( "POWER_ON failed\n"); 687 hci_emit_hci_open_failed(); 688 return err; 689 } 690 691 // open low-level device 692 err = hci_stack.hci_transport->open(hci_stack.config); 693 if (err){ 694 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 695 if (hci_stack.control && hci_stack.control->off){ 696 (*hci_stack.control->off)(hci_stack.config); 697 } 698 hci_emit_hci_open_failed(); 699 return err; 700 } 701 return 0; 702 } 703 704 static void hci_power_control_off(void){ 705 706 log_info("hci_power_control_off\n"); 707 708 // close low-level device 709 hci_stack.hci_transport->close(hci_stack.config); 710 711 log_info("hci_power_control_off - hci_transport closed\n"); 712 713 // power off 714 if (hci_stack.control && hci_stack.control->off){ 715 (*hci_stack.control->off)(hci_stack.config); 716 } 717 718 log_info("hci_power_control_off - control closed\n"); 719 720 hci_stack.state = HCI_STATE_OFF; 721 } 722 723 static void hci_power_control_sleep(void){ 724 725 log_info("hci_power_control_sleep\n"); 726 727 #if 0 728 // don't close serial port during sleep 729 730 // close low-level device 731 hci_stack.hci_transport->close(hci_stack.config); 732 #endif 733 734 // sleep mode 735 if (hci_stack.control && hci_stack.control->sleep){ 736 (*hci_stack.control->sleep)(hci_stack.config); 737 } 738 739 hci_stack.state = HCI_STATE_SLEEPING; 740 } 741 742 static int hci_power_control_wake(void){ 743 744 log_info("hci_power_control_wake\n"); 745 746 // wake on 747 if (hci_stack.control && hci_stack.control->wake){ 748 (*hci_stack.control->wake)(hci_stack.config); 749 } 750 751 #if 0 752 // open low-level device 753 int err = hci_stack.hci_transport->open(hci_stack.config); 754 if (err){ 755 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 756 if (hci_stack.control && hci_stack.control->off){ 757 (*hci_stack.control->off)(hci_stack.config); 758 } 759 hci_emit_hci_open_failed(); 760 return err; 761 } 762 #endif 763 764 return 0; 765 } 766 767 768 int hci_power_control(HCI_POWER_MODE power_mode){ 769 770 log_info("hci_power_control: %u, current mode %u\n", power_mode, hci_stack.state); 771 772 int err = 0; 773 switch (hci_stack.state){ 774 775 case HCI_STATE_OFF: 776 switch (power_mode){ 777 case HCI_POWER_ON: 778 err = hci_power_control_on(); 779 if (err) return err; 780 // set up state machine 781 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 782 hci_stack.state = HCI_STATE_INITIALIZING; 783 hci_stack.substate = 0; 784 break; 785 case HCI_POWER_OFF: 786 // do nothing 787 break; 788 case HCI_POWER_SLEEP: 789 // do nothing (with SLEEP == OFF) 790 break; 791 } 792 break; 793 794 case HCI_STATE_INITIALIZING: 795 switch (power_mode){ 796 case HCI_POWER_ON: 797 // do nothing 798 break; 799 case HCI_POWER_OFF: 800 // no connections yet, just turn it off 801 hci_power_control_off(); 802 break; 803 case HCI_POWER_SLEEP: 804 // no connections yet, just turn it off 805 hci_power_control_sleep(); 806 break; 807 } 808 break; 809 810 case HCI_STATE_WORKING: 811 switch (power_mode){ 812 case HCI_POWER_ON: 813 // do nothing 814 break; 815 case HCI_POWER_OFF: 816 // see hci_run 817 hci_stack.state = HCI_STATE_HALTING; 818 break; 819 case HCI_POWER_SLEEP: 820 // see hci_run 821 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 822 hci_stack.substate = 0; 823 break; 824 } 825 break; 826 827 case HCI_STATE_HALTING: 828 switch (power_mode){ 829 case HCI_POWER_ON: 830 // set up state machine 831 hci_stack.state = HCI_STATE_INITIALIZING; 832 hci_stack.substate = 0; 833 break; 834 case HCI_POWER_OFF: 835 // do nothing 836 break; 837 case HCI_POWER_SLEEP: 838 // see hci_run 839 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 840 hci_stack.substate = 0; 841 break; 842 } 843 break; 844 845 case HCI_STATE_FALLING_ASLEEP: 846 switch (power_mode){ 847 case HCI_POWER_ON: 848 849 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 850 // nothing to do, if H4 supports power management 851 if (bt_control_iphone_power_management_enabled()){ 852 break; 853 } 854 #endif 855 // set up state machine 856 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 857 hci_stack.state = HCI_STATE_INITIALIZING; 858 hci_stack.substate = 0; 859 break; 860 case HCI_POWER_OFF: 861 // see hci_run 862 hci_stack.state = HCI_STATE_HALTING; 863 break; 864 case HCI_POWER_SLEEP: 865 // do nothing 866 break; 867 } 868 break; 869 870 case HCI_STATE_SLEEPING: 871 switch (power_mode){ 872 case HCI_POWER_ON: 873 874 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 875 // nothing to do, if H4 supports power management 876 if (bt_control_iphone_power_management_enabled()){ 877 break; 878 } 879 #endif 880 err = hci_power_control_wake(); 881 if (err) return err; 882 // set up state machine 883 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 884 hci_stack.state = HCI_STATE_INITIALIZING; 885 hci_stack.substate = 0; 886 break; 887 case HCI_POWER_OFF: 888 hci_stack.state = HCI_STATE_HALTING; 889 break; 890 case HCI_POWER_SLEEP: 891 // do nothing 892 break; 893 } 894 break; 895 } 896 897 // create internal event 898 hci_emit_state(); 899 900 // trigger next/first action 901 hci_run(); 902 903 return 0; 904 } 905 906 void hci_discoverable_control(uint8_t enable){ 907 if (enable) enable = 1; // normalize argument 908 909 if (hci_stack.discoverable == enable){ 910 hci_emit_discoverable_enabled(hci_stack.discoverable); 911 return; 912 } 913 914 // store request to send command but accept in higher layer view 915 hci_stack.new_scan_enable_value = 2 | enable; // 1 = inq scan, 2 = page scan 916 hci_stack.discoverable = enable; 917 918 hci_run(); 919 } 920 921 void hci_run(){ 922 923 hci_connection_t * connection; 924 linked_item_t * it; 925 926 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 927 928 // global/non-connection oriented commands 929 930 // decline incoming connections 931 if (hci_stack.decline_reason){ 932 uint8_t reason = hci_stack.decline_reason; 933 hci_stack.decline_reason = 0; 934 hci_send_cmd(&hci_reject_connection_request, hci_stack.decline_addr, reason); 935 } 936 937 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 938 939 // send scan enable 940 if (hci_stack.new_scan_enable_value != 0xff){ 941 hci_send_cmd(&hci_write_scan_enable, hci_stack.new_scan_enable_value); 942 hci_stack.new_scan_enable_value = 0xff; 943 } 944 945 // send pending HCI commands 946 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 947 948 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 949 950 connection = (hci_connection_t *) it; 951 952 if (connection->state == RECEIVED_CONNECTION_REQUEST){ 953 log_info("sending hci_accept_connection_request\n"); 954 hci_send_cmd(&hci_accept_connection_request, connection->address, 1); 955 connection->state = ACCEPTED_CONNECTION_REQUEST; 956 } 957 958 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 959 960 if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){ 961 link_key_t link_key; 962 log_info("responding to link key request\n"); 963 if ( hci_stack.remote_device_db->get_link_key( &connection->address, &link_key)){ 964 hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key); 965 } else { 966 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 967 } 968 connection->authentication_flags &= ~HANDLE_LINK_KEY_REQUEST; 969 } 970 } 971 972 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 973 974 switch (hci_stack.state){ 975 case HCI_STATE_INITIALIZING: 976 // log_info("hci_init: substate %u\n", hci_stack.substate); 977 if (hci_stack.substate % 2) { 978 // odd: waiting for command completion 979 return; 980 } 981 switch (hci_stack.substate >> 1){ 982 case 0: // RESET 983 hci_send_cmd(&hci_reset); 984 if (hci_stack.config == 0 || ((hci_uart_config_t *)hci_stack.config)->baudrate_main == 0){ 985 // skip baud change 986 hci_stack.substate = 4; // >> 1 = 2 987 } 988 break; 989 case 1: // SEND BAUD CHANGE 990 hci_stack.control->baudrate_cmd(hci_stack.config, ((hci_uart_config_t *)hci_stack.config)->baudrate_main, hci_stack.hci_packet_buffer); 991 hci_send_cmd_packet(hci_stack.hci_packet_buffer, 3 + hci_stack.hci_packet_buffer[2]); 992 break; 993 case 2: // LOCAL BAUD CHANGE 994 hci_stack.hci_transport->set_baudrate(((hci_uart_config_t *)hci_stack.config)->baudrate_main); 995 hci_stack.substate += 2; 996 // break missing here for fall through 997 998 case 3: 999 // custom initialization 1000 if (hci_stack.control && hci_stack.control->next_cmd){ 1001 int valid_cmd = (*hci_stack.control->next_cmd)(hci_stack.config, hci_stack.hci_packet_buffer); 1002 if (valid_cmd){ 1003 int size = 3 + hci_stack.hci_packet_buffer[2]; 1004 hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack.hci_packet_buffer, size); 1005 hci_stack.substate = 4; // more init commands 1006 break; 1007 } 1008 log_info("hci_run: init script done\n\r"); 1009 } 1010 // otherwise continue 1011 hci_send_cmd(&hci_read_bd_addr); 1012 break; 1013 case 4: 1014 hci_send_cmd(&hci_read_buffer_size); 1015 break; 1016 case 5: 1017 // ca. 15 sec 1018 hci_send_cmd(&hci_write_page_timeout, 0x6000); 1019 break; 1020 case 6: 1021 hci_send_cmd(&hci_write_scan_enable, 2 | hci_stack.discoverable); // page scan 1022 break; 1023 case 7: 1024 #ifndef EMBEDDED 1025 { 1026 char hostname[30]; 1027 gethostname(hostname, 30); 1028 hostname[29] = '\0'; 1029 hci_send_cmd(&hci_write_local_name, hostname); 1030 break; 1031 } 1032 case 8: 1033 #ifdef USE_BLUETOOL 1034 hci_send_cmd(&hci_write_class_of_device, 0x007a020c); // Smartphone 1035 break; 1036 1037 case 9: 1038 #endif 1039 #endif 1040 // done. 1041 hci_stack.state = HCI_STATE_WORKING; 1042 hci_emit_state(); 1043 break; 1044 default: 1045 break; 1046 } 1047 hci_stack.substate++; 1048 break; 1049 1050 case HCI_STATE_HALTING: 1051 1052 log_info("HCI_STATE_HALTING\n"); 1053 // close all open connections 1054 connection = (hci_connection_t *) hci_stack.connections; 1055 if (connection){ 1056 1057 // send disconnect 1058 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1059 1060 log_info("HCI_STATE_HALTING, connection %lu, handle %u\n", (uintptr_t) connection, (uint16_t)connection->con_handle); 1061 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1062 1063 // send disconnected event right away - causes higher layer connections to get closed, too. 1064 hci_shutdown_connection(connection); 1065 return; 1066 } 1067 log_info("HCI_STATE_HALTING, calling off\n"); 1068 1069 // switch mode 1070 hci_power_control_off(); 1071 1072 log_info("HCI_STATE_HALTING, emitting state\n"); 1073 hci_emit_state(); 1074 log_info("HCI_STATE_HALTING, done\n"); 1075 break; 1076 1077 case HCI_STATE_FALLING_ASLEEP: 1078 switch(hci_stack.substate) { 1079 case 0: 1080 log_info("HCI_STATE_FALLING_ASLEEP\n"); 1081 // close all open connections 1082 connection = (hci_connection_t *) hci_stack.connections; 1083 1084 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1085 // don't close connections, if H4 supports power management 1086 if (bt_control_iphone_power_management_enabled()){ 1087 connection = NULL; 1088 } 1089 #endif 1090 if (connection){ 1091 1092 // send disconnect 1093 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1094 1095 log_info("HCI_STATE_FALLING_ASLEEP, connection %lu, handle %u\n", (uintptr_t) connection, (uint16_t)connection->con_handle); 1096 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1097 1098 // send disconnected event right away - causes higher layer connections to get closed, too. 1099 hci_shutdown_connection(connection); 1100 return; 1101 } 1102 1103 // disable page and inquiry scan 1104 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1105 1106 log_info("HCI_STATE_HALTING, disabling inq & page scans\n"); 1107 hci_send_cmd(&hci_write_scan_enable, 0); // none 1108 1109 // continue in next sub state 1110 hci_stack.substate++; 1111 break; 1112 case 1: 1113 // wait for command complete "hci_write_scan_enable" in event_handler(); 1114 break; 1115 case 2: 1116 log_info("HCI_STATE_HALTING, calling sleep\n"); 1117 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1118 // don't actually go to sleep, if H4 supports power management 1119 if (bt_control_iphone_power_management_enabled()){ 1120 // SLEEP MODE reached 1121 hci_stack.state = HCI_STATE_SLEEPING; 1122 hci_emit_state(); 1123 break; 1124 } 1125 #endif 1126 // switch mode 1127 hci_power_control_sleep(); // changes hci_stack.state to SLEEP 1128 hci_emit_state(); 1129 break; 1130 1131 default: 1132 break; 1133 } 1134 break; 1135 1136 default: 1137 break; 1138 } 1139 } 1140 1141 int hci_send_cmd_packet(uint8_t *packet, int size){ 1142 bd_addr_t addr; 1143 hci_connection_t * conn; 1144 // house-keeping 1145 1146 // create_connection? 1147 if (IS_COMMAND(packet, hci_create_connection)){ 1148 bt_flip_addr(addr, &packet[3]); 1149 log_info("Create_connection to %s\n", bd_addr_to_str(addr)); 1150 conn = connection_for_address(addr); 1151 if (conn) { 1152 // if connection exists 1153 if (conn->state == OPEN) { 1154 // and OPEN, emit connection complete command 1155 hci_emit_connection_complete(conn, 0); 1156 } 1157 // otherwise, just ignore as it is already in the open process 1158 return 0; // don't sent packet to controller 1159 1160 } 1161 // create connection struct and register, state = SENT_CREATE_CONNECTION 1162 conn = create_connection_for_addr(addr); 1163 if (!conn){ 1164 // notify client that alloc failed 1165 hci_emit_connection_complete(conn, BTSTACK_MEMORY_ALLOC_FAILED); 1166 return 0; // don't sent packet to controller 1167 } 1168 conn->state = SENT_CREATE_CONNECTION; 1169 } 1170 1171 if (IS_COMMAND(packet, hci_link_key_request_reply)){ 1172 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY); 1173 } 1174 if (IS_COMMAND(packet, hci_link_key_request_negative_reply)){ 1175 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST); 1176 } 1177 if (IS_COMMAND(packet, hci_pin_code_request_reply)){ 1178 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_REPLY); 1179 } 1180 if (IS_COMMAND(packet, hci_pin_code_request_negative_reply)){ 1181 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_NEGATIVE_REPLY); 1182 } 1183 1184 if (IS_COMMAND(packet, hci_delete_stored_link_key)){ 1185 if (hci_stack.remote_device_db){ 1186 bt_flip_addr(addr, &packet[3]); 1187 hci_stack.remote_device_db->delete_link_key(&addr); 1188 } 1189 } 1190 1191 hci_stack.num_cmd_packets--; 1192 return hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 1193 } 1194 1195 /** 1196 * pre: numcmds >= 0 - it's allowed to send a command to the controller 1197 */ 1198 int hci_send_cmd(const hci_cmd_t *cmd, ...){ 1199 va_list argptr; 1200 va_start(argptr, cmd); 1201 uint16_t size = hci_create_cmd_internal(hci_stack.hci_packet_buffer, cmd, argptr); 1202 va_end(argptr); 1203 return hci_send_cmd_packet(hci_stack.hci_packet_buffer, size); 1204 } 1205 1206 // Create various non-HCI events. 1207 // TODO: generalize, use table similar to hci_create_command 1208 1209 void hci_emit_state(){ 1210 uint8_t event[3]; 1211 event[0] = BTSTACK_EVENT_STATE; 1212 event[1] = sizeof(event) - 2; 1213 event[2] = hci_stack.state; 1214 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1215 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1216 } 1217 1218 void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status){ 1219 uint8_t event[13]; 1220 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 1221 event[1] = sizeof(event) - 2; 1222 event[2] = status; 1223 bt_store_16(event, 3, conn->con_handle); 1224 bt_flip_addr(&event[5], conn->address); 1225 event[11] = 1; // ACL connection 1226 event[12] = 0; // encryption disabled 1227 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1228 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1229 } 1230 1231 void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason){ 1232 uint8_t event[6]; 1233 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 1234 event[1] = sizeof(event) - 2; 1235 event[2] = 0; // status = OK 1236 bt_store_16(event, 3, handle); 1237 event[5] = reason; 1238 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1239 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1240 } 1241 1242 void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 1243 uint8_t event[4]; 1244 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 1245 event[1] = sizeof(event) - 2; 1246 bt_store_16(event, 2, conn->con_handle); 1247 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1248 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1249 } 1250 1251 void hci_emit_nr_connections_changed(){ 1252 uint8_t event[3]; 1253 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 1254 event[1] = sizeof(event) - 2; 1255 event[2] = nr_hci_connections(); 1256 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1257 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1258 } 1259 1260 void hci_emit_hci_open_failed(){ 1261 uint8_t event[2]; 1262 event[0] = BTSTACK_EVENT_POWERON_FAILED; 1263 event[1] = sizeof(event) - 2; 1264 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1265 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1266 } 1267 1268 1269 void hci_emit_btstack_version() { 1270 uint8_t event[6]; 1271 event[0] = BTSTACK_EVENT_VERSION; 1272 event[1] = sizeof(event) - 2; 1273 event[2] = BTSTACK_MAJOR; 1274 event[3] = BTSTACK_MINOR; 1275 bt_store_16(event, 4, BTSTACK_REVISION); 1276 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1277 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1278 } 1279 1280 void hci_emit_system_bluetooth_enabled(uint8_t enabled){ 1281 uint8_t event[3]; 1282 event[0] = BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED; 1283 event[1] = sizeof(event) - 2; 1284 event[2] = enabled; 1285 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1286 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1287 } 1288 1289 void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name){ 1290 uint8_t event[2+1+6+248]; 1291 event[0] = BTSTACK_EVENT_REMOTE_NAME_CACHED; 1292 event[1] = sizeof(event) - 2; 1293 event[2] = 0; // just to be compatible with HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 1294 bt_flip_addr(&event[3], *addr); 1295 memcpy(&event[9], name, 248); 1296 hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1297 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1298 } 1299 1300 void hci_emit_discoverable_enabled(uint8_t enabled){ 1301 uint8_t event[3]; 1302 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 1303 event[1] = sizeof(event) - 2; 1304 event[2] = enabled; 1305 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1306 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1307 } 1308