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 #include <btstack/version.h> 50 #endif 51 52 #include "btstack_memory.h" 53 #include "debug.h" 54 #include "hci_dump.h" 55 56 #include <btstack/hci_cmds.h> 57 58 #define HCI_CONNECTION_TIMEOUT_MS 10000 59 60 #ifdef USE_BLUETOOL 61 #include "bt_control_iphone.h" 62 #endif 63 64 // the STACK is here 65 static hci_stack_t hci_stack; 66 67 /** 68 * get connection for a given handle 69 * 70 * @return connection OR NULL, if not found 71 */ 72 hci_connection_t * connection_for_handle(hci_con_handle_t con_handle){ 73 linked_item_t *it; 74 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 75 if ( ((hci_connection_t *) it)->con_handle == con_handle){ 76 return (hci_connection_t *) it; 77 } 78 } 79 return NULL; 80 } 81 82 static void hci_connection_timeout_handler(timer_source_t *timer){ 83 hci_connection_t * connection = linked_item_get_user(&timer->item); 84 #ifdef HAVE_TIME 85 struct timeval tv; 86 gettimeofday(&tv, NULL); 87 if (tv.tv_sec >= connection->timestamp.tv_sec + HCI_CONNECTION_TIMEOUT_MS/1000) { 88 // connections might be timed out 89 hci_emit_l2cap_check_timeout(connection); 90 } 91 #endif 92 #ifdef HAVE_TICK 93 if (embedded_get_ticks() > connection->timestamp + embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 94 // connections might be timed out 95 hci_emit_l2cap_check_timeout(connection); 96 } 97 #endif 98 run_loop_set_timer(timer, HCI_CONNECTION_TIMEOUT_MS); 99 run_loop_add_timer(timer); 100 } 101 102 static void hci_connection_timestamp(hci_connection_t *connection){ 103 #ifdef HAVE_TIME 104 gettimeofday(&connection->timestamp, NULL); 105 #endif 106 #ifdef HAVE_TICK 107 connection->timestamp = embedded_get_ticks(); 108 #endif 109 } 110 111 /** 112 * create connection for given address 113 * 114 * @return connection OR NULL, if no memory left 115 */ 116 static hci_connection_t * create_connection_for_addr(bd_addr_t addr){ 117 hci_connection_t * conn = btstack_memory_hci_connection_get(); 118 if (!conn) return NULL; 119 BD_ADDR_COPY(conn->address, addr); 120 conn->con_handle = 0xffff; 121 conn->authentication_flags = AUTH_FLAGS_NONE; 122 linked_item_set_user(&conn->timeout.item, conn); 123 conn->timeout.process = hci_connection_timeout_handler; 124 hci_connection_timestamp(conn); 125 conn->acl_recombination_length = 0; 126 conn->acl_recombination_pos = 0; 127 conn->num_acl_packets_sent = 0; 128 linked_list_add(&hci_stack.connections, (linked_item_t *) conn); 129 return conn; 130 } 131 132 /** 133 * get connection for given address 134 * 135 * @return connection OR NULL, if not found 136 */ 137 static hci_connection_t * connection_for_address(bd_addr_t address){ 138 linked_item_t *it; 139 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 140 if ( ! BD_ADDR_CMP( ((hci_connection_t *) it)->address, address) ){ 141 return (hci_connection_t *) it; 142 } 143 } 144 return NULL; 145 } 146 147 /** 148 * add authentication flags and reset timer 149 */ 150 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 151 bd_addr_t addr; 152 bt_flip_addr(addr, *(bd_addr_t *) bd_addr); 153 hci_connection_t * conn = connection_for_address(addr); 154 if (conn) { 155 conn->authentication_flags |= flags; 156 hci_connection_timestamp(conn); 157 } 158 } 159 160 int hci_authentication_active_for_handle(hci_con_handle_t handle){ 161 hci_connection_t * conn = connection_for_handle(handle); 162 if (!conn) return 0; 163 if (!conn->authentication_flags) return 0; 164 if (conn->authentication_flags & SENT_LINK_KEY_REPLY) return 0; 165 if (conn->authentication_flags & RECV_LINK_KEY_NOTIFICATION) return 0; 166 return 1; 167 } 168 169 void hci_drop_link_key_for_bd_addr(bd_addr_t *addr){ 170 if (hci_stack.remote_device_db) { 171 hci_stack.remote_device_db->delete_link_key(addr); 172 } 173 } 174 175 176 /** 177 * count connections 178 */ 179 static int nr_hci_connections(void){ 180 int count = 0; 181 linked_item_t *it; 182 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next, count++); 183 return count; 184 } 185 186 /** 187 * Dummy handler called by HCI 188 */ 189 static void dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 190 } 191 192 uint8_t hci_number_outgoing_packets(hci_con_handle_t handle){ 193 hci_connection_t * connection = connection_for_handle(handle); 194 if (!connection) { 195 log_error("hci_number_outgoing_packets connectino for handle %u does not exist!\n", handle); 196 return 0; 197 } 198 return connection->num_acl_packets_sent; 199 } 200 201 uint8_t hci_number_free_acl_slots(){ 202 uint8_t free_slots = hci_stack.total_num_acl_packets; 203 linked_item_t *it; 204 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 205 hci_connection_t * connection = (hci_connection_t *) it; 206 if (free_slots < connection->num_acl_packets_sent) { 207 log_error("hci_number_free_acl_slots: sum of outgoing packets > total acl packets!\n"); 208 return 0; 209 } 210 free_slots -= connection->num_acl_packets_sent; 211 } 212 return free_slots; 213 } 214 215 int hci_can_send_packet_now(uint8_t packet_type){ 216 217 // check for async hci transport implementations 218 if (hci_stack.hci_transport->can_send_packet_now){ 219 if (!hci_stack.hci_transport->can_send_packet_now(packet_type)){ 220 return 0; 221 } 222 } 223 224 // check regular Bluetooth flow control 225 switch (packet_type) { 226 case HCI_ACL_DATA_PACKET: 227 return hci_number_free_acl_slots(); 228 case HCI_COMMAND_DATA_PACKET: 229 return hci_stack.num_cmd_packets; 230 default: 231 return 0; 232 } 233 } 234 235 int hci_send_acl_packet(uint8_t *packet, int size){ 236 237 // check for free places on BT module 238 if (!hci_number_free_acl_slots()) return BTSTACK_ACL_BUFFERS_FULL; 239 240 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 241 hci_connection_t *connection = connection_for_handle( con_handle); 242 if (!connection) return 0; 243 hci_connection_timestamp(connection); 244 245 // count packet 246 connection->num_acl_packets_sent++; 247 // log_info("hci_send_acl_packet - handle %u, sent %u\n", connection->con_handle, connection->num_acl_packets_sent); 248 249 // send packet 250 int err = hci_stack.hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 251 252 return err; 253 } 254 255 static void acl_handler(uint8_t *packet, int size){ 256 257 // get info 258 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 259 hci_connection_t *conn = connection_for_handle(con_handle); 260 uint8_t acl_flags = READ_ACL_FLAGS(packet); 261 uint16_t acl_length = READ_ACL_LENGTH(packet); 262 263 // ignore non-registered handle 264 if (!conn){ 265 log_error( "hci.c: acl_handler called with non-registered handle %u!\n" , con_handle); 266 return; 267 } 268 269 // update idle timestamp 270 hci_connection_timestamp(conn); 271 272 // handle different packet types 273 switch (acl_flags & 0x03) { 274 275 case 0x01: // continuation fragment 276 277 // sanity check 278 if (conn->acl_recombination_pos == 0) { 279 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x\n", con_handle); 280 return; 281 } 282 283 // append fragment payload (header already stored) 284 memcpy(&conn->acl_recombination_buffer[conn->acl_recombination_pos], &packet[4], acl_length ); 285 conn->acl_recombination_pos += acl_length; 286 287 // log_error( "ACL Cont Fragment: acl_len %u, combined_len %u, l2cap_len %u\n", acl_length, 288 // conn->acl_recombination_pos, conn->acl_recombination_length); 289 290 // forward complete L2CAP packet if complete. 291 if (conn->acl_recombination_pos >= conn->acl_recombination_length + 4 + 4){ // pos already incl. ACL header 292 293 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, conn->acl_recombination_buffer, conn->acl_recombination_pos); 294 // reset recombination buffer 295 conn->acl_recombination_length = 0; 296 conn->acl_recombination_pos = 0; 297 } 298 break; 299 300 case 0x02: { // first fragment 301 302 // sanity check 303 if (conn->acl_recombination_pos) { 304 log_error( "ACL First Fragment but data in buffer for handle 0x%02x\n", con_handle); 305 return; 306 } 307 308 // peek into L2CAP packet! 309 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 310 311 // log_error( "ACL First Fragment: acl_len %u, l2cap_len %u\n", acl_length, l2cap_length); 312 313 // compare fragment size to L2CAP packet size 314 if (acl_length >= l2cap_length + 4){ 315 316 // forward fragment as L2CAP packet 317 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, packet, acl_length + 4); 318 319 } else { 320 // store first fragment and tweak acl length for complete package 321 memcpy(conn->acl_recombination_buffer, packet, acl_length + 4); 322 conn->acl_recombination_pos = acl_length + 4; 323 conn->acl_recombination_length = l2cap_length; 324 bt_store_16(conn->acl_recombination_buffer, 2, l2cap_length +4); 325 } 326 break; 327 328 } 329 default: 330 log_error( "hci.c: acl_handler called with invalid packet boundary flags %u\n", acl_flags & 0x03); 331 return; 332 } 333 334 // execute main loop 335 hci_run(); 336 } 337 338 static void hci_shutdown_connection(hci_connection_t *conn){ 339 log_info("Connection closed: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 340 341 // cancel all l2cap connections 342 hci_emit_disconnection_complete(conn->con_handle, 0x16); // terminated by local host 343 344 run_loop_remove_timer(&conn->timeout); 345 346 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 347 btstack_memory_hci_connection_free( conn ); 348 349 // now it's gone 350 hci_emit_nr_connections_changed(); 351 } 352 353 static const uint16_t packet_type_sizes[] = { 354 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 355 HCI_ACL_DH1_SIZE, 0, 0, 0, 356 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 357 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 358 }; 359 360 static uint16_t hci_acl_packet_types_for_buffer_size(uint16_t buffer_size){ 361 uint16_t packet_types = 0; 362 int i; 363 for (i=0;i<16;i++){ 364 if (packet_type_sizes[i] == 0) continue; 365 if (packet_type_sizes[i] <= buffer_size){ 366 packet_types |= 1 << i; 367 } 368 } 369 // flip bits for "may not be used" 370 packet_types ^= 0x3306; 371 return packet_types; 372 } 373 374 uint16_t hci_usable_acl_packet_types(void){ 375 return hci_stack.packet_types; 376 } 377 378 uint8_t* hci_get_outgoing_acl_packet_buffer(void){ 379 // hci packet buffer is >= acl data packet length 380 return hci_stack.hci_packet_buffer; 381 } 382 383 uint16_t hci_max_acl_data_packet_length(){ 384 return hci_stack.acl_data_packet_length; 385 } 386 387 // avoid huge local variables 388 #ifndef EMBEDDED 389 static device_name_t device_name; 390 #endif 391 static void event_handler(uint8_t *packet, int size){ 392 bd_addr_t addr; 393 uint8_t link_type; 394 hci_con_handle_t handle; 395 hci_connection_t * conn; 396 int i; 397 398 // printf("HCI:EVENT:%02x\n", packet[0]); 399 400 switch (packet[0]) { 401 402 case HCI_EVENT_COMMAND_COMPLETE: 403 // get num cmd packets 404 // log_info("HCI_EVENT_COMMAND_COMPLETE cmds old %u - new %u\n", hci_stack.num_cmd_packets, packet[2]); 405 hci_stack.num_cmd_packets = packet[2]; 406 407 if (COMMAND_COMPLETE_EVENT(packet, hci_read_buffer_size)){ 408 // from offset 5 409 // status 410 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 411 hci_stack.acl_data_packet_length = READ_BT_16(packet, 6); 412 // ignore: SCO data packet len (8) 413 hci_stack.total_num_acl_packets = packet[9]; 414 // ignore: total num SCO packets 415 if (hci_stack.state == HCI_STATE_INITIALIZING){ 416 // determine usable ACL payload size 417 if (HCI_ACL_PAYLOAD_SIZE < hci_stack.acl_data_packet_length){ 418 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 419 } 420 // determine usable ACL packet types 421 hci_stack.packet_types = hci_acl_packet_types_for_buffer_size(hci_stack.acl_data_packet_length); 422 423 log_error("hci_read_buffer_size: used size %u, count %u, packet types %04x\n", 424 hci_stack.acl_data_packet_length, hci_stack.total_num_acl_packets, hci_stack.packet_types); 425 } 426 } 427 if (COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 428 hci_emit_discoverable_enabled(hci_stack.discoverable); 429 } 430 break; 431 432 case HCI_EVENT_COMMAND_STATUS: 433 // get num cmd packets 434 // log_info("HCI_EVENT_COMMAND_STATUS cmds - old %u - new %u\n", hci_stack.num_cmd_packets, packet[3]); 435 hci_stack.num_cmd_packets = packet[3]; 436 break; 437 438 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS: 439 for (i=0; i<packet[2];i++){ 440 handle = READ_BT_16(packet, 3 + 2*i); 441 uint16_t num_packets = READ_BT_16(packet, 3 + packet[2]*2 + 2*i); 442 conn = connection_for_handle(handle); 443 if (!conn){ 444 log_error("hci_number_completed_packet lists unused con handle %u\n", handle); 445 continue; 446 } 447 conn->num_acl_packets_sent -= num_packets; 448 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u\n", num_packets, handle, conn->num_acl_packets_sent); 449 } 450 break; 451 452 case HCI_EVENT_CONNECTION_REQUEST: 453 bt_flip_addr(addr, &packet[2]); 454 // TODO: eval COD 8-10 455 link_type = packet[11]; 456 log_info("Connection_incoming: %s, type %u\n", bd_addr_to_str(addr), link_type); 457 if (link_type == 1) { // ACL 458 conn = connection_for_address(addr); 459 if (!conn) { 460 conn = create_connection_for_addr(addr); 461 } 462 if (!conn) { 463 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 464 hci_stack.decline_reason = 0x0d; 465 BD_ADDR_COPY(hci_stack.decline_addr, addr); 466 break; 467 } 468 conn->state = RECEIVED_CONNECTION_REQUEST; 469 hci_run(); 470 } else { 471 // SYNCHRONOUS CONNECTION LIMIT TO A DEVICE EXCEEDED (0X0A) 472 hci_stack.decline_reason = 0x0a; 473 BD_ADDR_COPY(hci_stack.decline_addr, addr); 474 } 475 break; 476 477 case HCI_EVENT_CONNECTION_COMPLETE: 478 // Connection management 479 bt_flip_addr(addr, &packet[5]); 480 log_info("Connection_complete (status=%u) %s\n", packet[2], bd_addr_to_str(addr)); 481 conn = connection_for_address(addr); 482 if (conn) { 483 if (!packet[2]){ 484 conn->state = OPEN; 485 conn->con_handle = READ_BT_16(packet, 3); 486 487 // restart timer 488 run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 489 run_loop_add_timer(&conn->timeout); 490 491 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 492 493 hci_emit_nr_connections_changed(); 494 } else { 495 // connection failed, remove entry 496 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 497 btstack_memory_hci_connection_free( conn ); 498 499 // if authentication error, also delete link key 500 if (packet[2] == 0x05) { 501 hci_drop_link_key_for_bd_addr(&addr); 502 } 503 } 504 } 505 break; 506 507 case HCI_EVENT_LINK_KEY_REQUEST: 508 log_info("HCI_EVENT_LINK_KEY_REQUEST\n"); 509 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_REQUEST); 510 if (!hci_stack.remote_device_db) break; 511 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], HANDLE_LINK_KEY_REQUEST); 512 hci_run(); 513 // request already answered 514 return; 515 516 case HCI_EVENT_LINK_KEY_NOTIFICATION: 517 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_NOTIFICATION); 518 if (!hci_stack.remote_device_db) break; 519 bt_flip_addr(addr, &packet[2]); 520 hci_stack.remote_device_db->put_link_key(&addr, (link_key_t *) &packet[8]); 521 // still forward event to allow dismiss of pairing dialog 522 break; 523 524 case HCI_EVENT_PIN_CODE_REQUEST: 525 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_PIN_CODE_REQUEST); 526 break; 527 528 #ifndef EMBEDDED 529 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 530 if (!hci_stack.remote_device_db) break; 531 if (packet[2]) break; // status not ok 532 bt_flip_addr(addr, &packet[3]); 533 // fix for invalid remote names - terminate on 0xff 534 for (i=0; i<248;i++){ 535 if (packet[9+i] == 0xff){ 536 packet[9+i] = 0; 537 break; 538 } 539 } 540 memset(&device_name, 0, sizeof(device_name_t)); 541 strncpy((char*) device_name, (char*) &packet[9], 248); 542 hci_stack.remote_device_db->put_name(&addr, &device_name); 543 break; 544 545 case HCI_EVENT_INQUIRY_RESULT: 546 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 547 if (!hci_stack.remote_device_db) break; 548 // first send inq result packet 549 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 550 // then send cached remote names 551 for (i=0; i<packet[2];i++){ 552 bt_flip_addr(addr, &packet[3+i*6]); 553 if (hci_stack.remote_device_db->get_name(&addr, &device_name)){ 554 hci_emit_remote_name_cached(&addr, &device_name); 555 } 556 } 557 return; 558 #endif 559 560 case HCI_EVENT_DISCONNECTION_COMPLETE: 561 if (!packet[2]){ 562 handle = READ_BT_16(packet, 3); 563 hci_connection_t * conn = connection_for_handle(handle); 564 if (conn) { 565 hci_shutdown_connection(conn); 566 } 567 } 568 break; 569 570 case HCI_EVENT_HARDWARE_ERROR: 571 if(hci_stack.control->hw_error){ 572 (*hci_stack.control->hw_error)(); 573 } 574 break; 575 576 #ifdef HAVE_BLE 577 case HCI_EVENT_LE_META: 578 switch (packet[2]) { 579 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 580 // Connection management 581 bt_flip_addr(addr, &packet[8]); 582 log_info("LE Connection_complete (status=%u) %s\n", packet[3], bd_addr_to_str(addr)); 583 // LE connections are auto-accepted, so just create a connection if there isn't one already 584 conn = connection_for_address(addr); 585 if (packet[3]){ 586 if (conn){ 587 // outgoing connection failed, remove entry 588 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 589 btstack_memory_hci_connection_free( conn ); 590 591 } 592 // if authentication error, also delete link key 593 if (packet[3] == 0x05) { 594 hci_drop_link_key_for_bd_addr(&addr); 595 } 596 break; 597 } 598 if (!conn){ 599 conn = create_connection_for_addr(addr); 600 } 601 if (!conn){ 602 // no memory 603 break; 604 } 605 606 conn->state = OPEN; 607 conn->con_handle = READ_BT_16(packet, 4); 608 609 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 610 611 // restart timer 612 // run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 613 // run_loop_add_timer(&conn->timeout); 614 615 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 616 617 hci_emit_nr_connections_changed(); 618 break; 619 620 default: 621 break; 622 } 623 break; 624 #endif 625 626 default: 627 break; 628 } 629 630 // handle BT initialization 631 if (hci_stack.state == HCI_STATE_INITIALIZING){ 632 // handle H4 synchronization loss on restart 633 // if (hci_stack.substate == 1 && packet[0] == HCI_EVENT_HARDWARE_ERROR){ 634 // hci_stack.substate = 0; 635 // } 636 // handle normal init sequence 637 if (hci_stack.substate % 2){ 638 // odd: waiting for event 639 if (packet[0] == HCI_EVENT_COMMAND_COMPLETE){ 640 hci_stack.substate++; 641 } 642 } 643 } 644 645 // help with BT sleep 646 if (hci_stack.state == HCI_STATE_FALLING_ASLEEP 647 && hci_stack.substate == 1 648 && COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 649 hci_stack.substate++; 650 } 651 652 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 653 654 // execute main loop 655 hci_run(); 656 } 657 658 void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 659 switch (packet_type) { 660 case HCI_EVENT_PACKET: 661 event_handler(packet, size); 662 break; 663 case HCI_ACL_DATA_PACKET: 664 acl_handler(packet, size); 665 break; 666 default: 667 break; 668 } 669 } 670 671 /** Register HCI packet handlers */ 672 void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){ 673 hci_stack.packet_handler = handler; 674 } 675 676 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t * remote_device_db){ 677 678 // reference to use transport layer implementation 679 hci_stack.hci_transport = transport; 680 681 // references to used control implementation 682 hci_stack.control = control; 683 684 // reference to used config 685 hci_stack.config = config; 686 687 // no connections yet 688 hci_stack.connections = NULL; 689 hci_stack.discoverable = 0; 690 691 // no pending cmds 692 hci_stack.decline_reason = 0; 693 hci_stack.new_scan_enable_value = 0xff; 694 695 // higher level handler 696 hci_stack.packet_handler = dummy_handler; 697 698 // store and open remote device db 699 hci_stack.remote_device_db = remote_device_db; 700 if (hci_stack.remote_device_db) { 701 hci_stack.remote_device_db->open(); 702 } 703 704 // max acl payload size defined in config.h 705 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 706 707 // register packet handlers with transport 708 transport->register_packet_handler(&packet_handler); 709 710 hci_stack.state = HCI_STATE_OFF; 711 } 712 713 void hci_close(){ 714 // close remote device db 715 if (hci_stack.remote_device_db) { 716 hci_stack.remote_device_db->close(); 717 } 718 while (hci_stack.connections) { 719 hci_shutdown_connection((hci_connection_t *) hci_stack.connections); 720 } 721 hci_power_control(HCI_POWER_OFF); 722 } 723 724 // State-Module-Driver overview 725 // state module low-level 726 // HCI_STATE_OFF off close 727 // HCI_STATE_INITIALIZING, on open 728 // HCI_STATE_WORKING, on open 729 // HCI_STATE_HALTING, on open 730 // HCI_STATE_SLEEPING, off/sleep close 731 // HCI_STATE_FALLING_ASLEEP on open 732 733 static int hci_power_control_on(void){ 734 735 // power on 736 int err = 0; 737 if (hci_stack.control && hci_stack.control->on){ 738 err = (*hci_stack.control->on)(hci_stack.config); 739 } 740 if (err){ 741 log_error( "POWER_ON failed\n"); 742 hci_emit_hci_open_failed(); 743 return err; 744 } 745 746 // open low-level device 747 err = hci_stack.hci_transport->open(hci_stack.config); 748 if (err){ 749 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 750 if (hci_stack.control && hci_stack.control->off){ 751 (*hci_stack.control->off)(hci_stack.config); 752 } 753 hci_emit_hci_open_failed(); 754 return err; 755 } 756 return 0; 757 } 758 759 static void hci_power_control_off(void){ 760 761 log_info("hci_power_control_off\n"); 762 763 // close low-level device 764 hci_stack.hci_transport->close(hci_stack.config); 765 766 log_info("hci_power_control_off - hci_transport closed\n"); 767 768 // power off 769 if (hci_stack.control && hci_stack.control->off){ 770 (*hci_stack.control->off)(hci_stack.config); 771 } 772 773 log_info("hci_power_control_off - control closed\n"); 774 775 hci_stack.state = HCI_STATE_OFF; 776 } 777 778 static void hci_power_control_sleep(void){ 779 780 log_info("hci_power_control_sleep\n"); 781 782 #if 0 783 // don't close serial port during sleep 784 785 // close low-level device 786 hci_stack.hci_transport->close(hci_stack.config); 787 #endif 788 789 // sleep mode 790 if (hci_stack.control && hci_stack.control->sleep){ 791 (*hci_stack.control->sleep)(hci_stack.config); 792 } 793 794 hci_stack.state = HCI_STATE_SLEEPING; 795 } 796 797 static int hci_power_control_wake(void){ 798 799 log_info("hci_power_control_wake\n"); 800 801 // wake on 802 if (hci_stack.control && hci_stack.control->wake){ 803 (*hci_stack.control->wake)(hci_stack.config); 804 } 805 806 #if 0 807 // open low-level device 808 int err = hci_stack.hci_transport->open(hci_stack.config); 809 if (err){ 810 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 811 if (hci_stack.control && hci_stack.control->off){ 812 (*hci_stack.control->off)(hci_stack.config); 813 } 814 hci_emit_hci_open_failed(); 815 return err; 816 } 817 #endif 818 819 return 0; 820 } 821 822 823 int hci_power_control(HCI_POWER_MODE power_mode){ 824 825 log_info("hci_power_control: %u, current mode %u\n", power_mode, hci_stack.state); 826 827 int err = 0; 828 switch (hci_stack.state){ 829 830 case HCI_STATE_OFF: 831 switch (power_mode){ 832 case HCI_POWER_ON: 833 err = hci_power_control_on(); 834 if (err) return err; 835 // set up state machine 836 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 837 hci_stack.state = HCI_STATE_INITIALIZING; 838 hci_stack.substate = 0; 839 break; 840 case HCI_POWER_OFF: 841 // do nothing 842 break; 843 case HCI_POWER_SLEEP: 844 // do nothing (with SLEEP == OFF) 845 break; 846 } 847 break; 848 849 case HCI_STATE_INITIALIZING: 850 switch (power_mode){ 851 case HCI_POWER_ON: 852 // do nothing 853 break; 854 case HCI_POWER_OFF: 855 // no connections yet, just turn it off 856 hci_power_control_off(); 857 break; 858 case HCI_POWER_SLEEP: 859 // no connections yet, just turn it off 860 hci_power_control_sleep(); 861 break; 862 } 863 break; 864 865 case HCI_STATE_WORKING: 866 switch (power_mode){ 867 case HCI_POWER_ON: 868 // do nothing 869 break; 870 case HCI_POWER_OFF: 871 // see hci_run 872 hci_stack.state = HCI_STATE_HALTING; 873 break; 874 case HCI_POWER_SLEEP: 875 // see hci_run 876 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 877 hci_stack.substate = 0; 878 break; 879 } 880 break; 881 882 case HCI_STATE_HALTING: 883 switch (power_mode){ 884 case HCI_POWER_ON: 885 // set up state machine 886 hci_stack.state = HCI_STATE_INITIALIZING; 887 hci_stack.substate = 0; 888 break; 889 case HCI_POWER_OFF: 890 // do nothing 891 break; 892 case HCI_POWER_SLEEP: 893 // see hci_run 894 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 895 hci_stack.substate = 0; 896 break; 897 } 898 break; 899 900 case HCI_STATE_FALLING_ASLEEP: 901 switch (power_mode){ 902 case HCI_POWER_ON: 903 904 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 905 // nothing to do, if H4 supports power management 906 if (bt_control_iphone_power_management_enabled()){ 907 hci_stack.state = HCI_STATE_INITIALIZING; 908 hci_stack.substate = 6; 909 break; 910 } 911 #endif 912 // set up state machine 913 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 914 hci_stack.state = HCI_STATE_INITIALIZING; 915 hci_stack.substate = 0; 916 break; 917 case HCI_POWER_OFF: 918 // see hci_run 919 hci_stack.state = HCI_STATE_HALTING; 920 break; 921 case HCI_POWER_SLEEP: 922 // do nothing 923 break; 924 } 925 break; 926 927 case HCI_STATE_SLEEPING: 928 switch (power_mode){ 929 case HCI_POWER_ON: 930 931 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 932 // nothing to do, if H4 supports power management 933 if (bt_control_iphone_power_management_enabled()){ 934 hci_stack.state = HCI_STATE_INITIALIZING; 935 hci_stack.substate = 6; 936 break; 937 } 938 #endif 939 err = hci_power_control_wake(); 940 if (err) return err; 941 // set up state machine 942 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 943 hci_stack.state = HCI_STATE_INITIALIZING; 944 hci_stack.substate = 0; 945 break; 946 case HCI_POWER_OFF: 947 hci_stack.state = HCI_STATE_HALTING; 948 break; 949 case HCI_POWER_SLEEP: 950 // do nothing 951 break; 952 } 953 break; 954 } 955 956 // create internal event 957 hci_emit_state(); 958 959 // trigger next/first action 960 hci_run(); 961 962 return 0; 963 } 964 965 void hci_discoverable_control(uint8_t enable){ 966 if (enable) enable = 1; // normalize argument 967 968 if (hci_stack.discoverable == enable){ 969 hci_emit_discoverable_enabled(hci_stack.discoverable); 970 return; 971 } 972 973 // store request to send command but accept in higher layer view 974 hci_stack.new_scan_enable_value = 2 | enable; // 1 = inq scan, 2 = page scan 975 hci_stack.discoverable = enable; 976 977 hci_run(); 978 } 979 980 void hci_run(){ 981 982 hci_connection_t * connection; 983 linked_item_t * it; 984 985 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 986 987 // global/non-connection oriented commands 988 989 // decline incoming connections 990 if (hci_stack.decline_reason){ 991 uint8_t reason = hci_stack.decline_reason; 992 hci_stack.decline_reason = 0; 993 hci_send_cmd(&hci_reject_connection_request, hci_stack.decline_addr, reason); 994 } 995 996 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 997 998 // send scan enable 999 if (hci_stack.new_scan_enable_value != 0xff){ 1000 hci_send_cmd(&hci_write_scan_enable, hci_stack.new_scan_enable_value); 1001 hci_stack.new_scan_enable_value = 0xff; 1002 } 1003 1004 // send pending HCI commands 1005 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 1006 1007 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1008 1009 connection = (hci_connection_t *) it; 1010 1011 if (connection->state == RECEIVED_CONNECTION_REQUEST){ 1012 log_info("sending hci_accept_connection_request\n"); 1013 hci_send_cmd(&hci_accept_connection_request, connection->address, 1); 1014 connection->state = ACCEPTED_CONNECTION_REQUEST; 1015 } 1016 1017 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1018 1019 if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){ 1020 link_key_t link_key; 1021 log_info("responding to link key request\n"); 1022 if ( hci_stack.remote_device_db->get_link_key( &connection->address, &link_key)){ 1023 hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key); 1024 } else { 1025 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 1026 } 1027 connection->authentication_flags &= ~HANDLE_LINK_KEY_REQUEST; 1028 } 1029 } 1030 1031 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1032 1033 switch (hci_stack.state){ 1034 case HCI_STATE_INITIALIZING: 1035 // log_info("hci_init: substate %u\n", hci_stack.substate); 1036 if (hci_stack.substate % 2) { 1037 // odd: waiting for command completion 1038 return; 1039 } 1040 switch (hci_stack.substate >> 1){ 1041 case 0: // RESET 1042 hci_send_cmd(&hci_reset); 1043 if (hci_stack.config == 0 || ((hci_uart_config_t *)hci_stack.config)->baudrate_main == 0){ 1044 // skip baud change 1045 hci_stack.substate = 4; // >> 1 = 2 1046 } 1047 break; 1048 case 1: // SEND BAUD CHANGE 1049 hci_stack.control->baudrate_cmd(hci_stack.config, ((hci_uart_config_t *)hci_stack.config)->baudrate_main, hci_stack.hci_packet_buffer); 1050 hci_send_cmd_packet(hci_stack.hci_packet_buffer, 3 + hci_stack.hci_packet_buffer[2]); 1051 break; 1052 case 2: // LOCAL BAUD CHANGE 1053 hci_stack.hci_transport->set_baudrate(((hci_uart_config_t *)hci_stack.config)->baudrate_main); 1054 hci_stack.substate += 2; 1055 // break missing here for fall through 1056 1057 case 3: 1058 // custom initialization 1059 if (hci_stack.control && hci_stack.control->next_cmd){ 1060 int valid_cmd = (*hci_stack.control->next_cmd)(hci_stack.config, hci_stack.hci_packet_buffer); 1061 if (valid_cmd){ 1062 int size = 3 + hci_stack.hci_packet_buffer[2]; 1063 hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack.hci_packet_buffer, size); 1064 hci_stack.substate = 4; // more init commands 1065 break; 1066 } 1067 log_info("hci_run: init script done\n\r"); 1068 } 1069 // otherwise continue 1070 hci_send_cmd(&hci_read_bd_addr); 1071 break; 1072 case 4: 1073 hci_send_cmd(&hci_read_buffer_size); 1074 break; 1075 case 5: 1076 // ca. 15 sec 1077 hci_send_cmd(&hci_write_page_timeout, 0x6000); 1078 break; 1079 case 6: 1080 hci_send_cmd(&hci_write_scan_enable, 2 | hci_stack.discoverable); // page scan 1081 break; 1082 case 7: 1083 #ifndef EMBEDDED 1084 { 1085 char hostname[30]; 1086 gethostname(hostname, 30); 1087 hostname[29] = '\0'; 1088 hci_send_cmd(&hci_write_local_name, hostname); 1089 break; 1090 } 1091 case 8: 1092 #ifdef USE_BLUETOOL 1093 hci_send_cmd(&hci_write_class_of_device, 0x007a020c); // Smartphone 1094 break; 1095 1096 case 9: 1097 #endif 1098 #endif 1099 // done. 1100 hci_stack.state = HCI_STATE_WORKING; 1101 hci_emit_state(); 1102 break; 1103 default: 1104 break; 1105 } 1106 hci_stack.substate++; 1107 break; 1108 1109 case HCI_STATE_HALTING: 1110 1111 log_info("HCI_STATE_HALTING\n"); 1112 // close all open connections 1113 connection = (hci_connection_t *) hci_stack.connections; 1114 if (connection){ 1115 1116 // send disconnect 1117 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1118 1119 log_info("HCI_STATE_HALTING, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1120 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1121 1122 // send disconnected event right away - causes higher layer connections to get closed, too. 1123 hci_shutdown_connection(connection); 1124 return; 1125 } 1126 log_info("HCI_STATE_HALTING, calling off\n"); 1127 1128 // switch mode 1129 hci_power_control_off(); 1130 1131 log_info("HCI_STATE_HALTING, emitting state\n"); 1132 hci_emit_state(); 1133 log_info("HCI_STATE_HALTING, done\n"); 1134 break; 1135 1136 case HCI_STATE_FALLING_ASLEEP: 1137 switch(hci_stack.substate) { 1138 case 0: 1139 log_info("HCI_STATE_FALLING_ASLEEP\n"); 1140 // close all open connections 1141 connection = (hci_connection_t *) hci_stack.connections; 1142 1143 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1144 // don't close connections, if H4 supports power management 1145 if (bt_control_iphone_power_management_enabled()){ 1146 connection = NULL; 1147 } 1148 #endif 1149 if (connection){ 1150 1151 // send disconnect 1152 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1153 1154 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1155 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1156 1157 // send disconnected event right away - causes higher layer connections to get closed, too. 1158 hci_shutdown_connection(connection); 1159 return; 1160 } 1161 1162 // disable page and inquiry scan 1163 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1164 1165 log_info("HCI_STATE_HALTING, disabling inq & page scans\n"); 1166 hci_send_cmd(&hci_write_scan_enable, 0); // none 1167 1168 // continue in next sub state 1169 hci_stack.substate++; 1170 break; 1171 case 1: 1172 // wait for command complete "hci_write_scan_enable" in event_handler(); 1173 break; 1174 case 2: 1175 log_info("HCI_STATE_HALTING, calling sleep\n"); 1176 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1177 // don't actually go to sleep, if H4 supports power management 1178 if (bt_control_iphone_power_management_enabled()){ 1179 // SLEEP MODE reached 1180 hci_stack.state = HCI_STATE_SLEEPING; 1181 hci_emit_state(); 1182 break; 1183 } 1184 #endif 1185 // switch mode 1186 hci_power_control_sleep(); // changes hci_stack.state to SLEEP 1187 hci_emit_state(); 1188 break; 1189 1190 default: 1191 break; 1192 } 1193 break; 1194 1195 default: 1196 break; 1197 } 1198 } 1199 1200 int hci_send_cmd_packet(uint8_t *packet, int size){ 1201 bd_addr_t addr; 1202 hci_connection_t * conn; 1203 // house-keeping 1204 1205 // create_connection? 1206 if (IS_COMMAND(packet, hci_create_connection)){ 1207 bt_flip_addr(addr, &packet[3]); 1208 log_info("Create_connection to %s\n", bd_addr_to_str(addr)); 1209 conn = connection_for_address(addr); 1210 if (conn) { 1211 // if connection exists 1212 if (conn->state == OPEN) { 1213 // and OPEN, emit connection complete command 1214 hci_emit_connection_complete(conn, 0); 1215 } 1216 // otherwise, just ignore as it is already in the open process 1217 return 0; // don't sent packet to controller 1218 1219 } 1220 // create connection struct and register, state = SENT_CREATE_CONNECTION 1221 conn = create_connection_for_addr(addr); 1222 if (!conn){ 1223 // notify client that alloc failed 1224 hci_emit_connection_complete(conn, BTSTACK_MEMORY_ALLOC_FAILED); 1225 return 0; // don't sent packet to controller 1226 } 1227 conn->state = SENT_CREATE_CONNECTION; 1228 } 1229 1230 if (IS_COMMAND(packet, hci_link_key_request_reply)){ 1231 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY); 1232 } 1233 if (IS_COMMAND(packet, hci_link_key_request_negative_reply)){ 1234 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST); 1235 } 1236 if (IS_COMMAND(packet, hci_pin_code_request_reply)){ 1237 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_REPLY); 1238 } 1239 if (IS_COMMAND(packet, hci_pin_code_request_negative_reply)){ 1240 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_NEGATIVE_REPLY); 1241 } 1242 1243 if (IS_COMMAND(packet, hci_delete_stored_link_key)){ 1244 if (hci_stack.remote_device_db){ 1245 bt_flip_addr(addr, &packet[3]); 1246 hci_stack.remote_device_db->delete_link_key(&addr); 1247 } 1248 } 1249 1250 hci_stack.num_cmd_packets--; 1251 return hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 1252 } 1253 1254 /** 1255 * pre: numcmds >= 0 - it's allowed to send a command to the controller 1256 */ 1257 int hci_send_cmd(const hci_cmd_t *cmd, ...){ 1258 va_list argptr; 1259 va_start(argptr, cmd); 1260 uint16_t size = hci_create_cmd_internal(hci_stack.hci_packet_buffer, cmd, argptr); 1261 va_end(argptr); 1262 return hci_send_cmd_packet(hci_stack.hci_packet_buffer, size); 1263 } 1264 1265 // Create various non-HCI events. 1266 // TODO: generalize, use table similar to hci_create_command 1267 1268 void hci_emit_state(){ 1269 uint8_t event[3]; 1270 event[0] = BTSTACK_EVENT_STATE; 1271 event[1] = sizeof(event) - 2; 1272 event[2] = hci_stack.state; 1273 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1274 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1275 } 1276 1277 void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status){ 1278 uint8_t event[13]; 1279 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 1280 event[1] = sizeof(event) - 2; 1281 event[2] = status; 1282 bt_store_16(event, 3, conn->con_handle); 1283 bt_flip_addr(&event[5], conn->address); 1284 event[11] = 1; // ACL connection 1285 event[12] = 0; // encryption disabled 1286 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1287 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1288 } 1289 1290 void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason){ 1291 uint8_t event[6]; 1292 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 1293 event[1] = sizeof(event) - 2; 1294 event[2] = 0; // status = OK 1295 bt_store_16(event, 3, handle); 1296 event[5] = reason; 1297 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1298 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1299 } 1300 1301 void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 1302 uint8_t event[4]; 1303 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 1304 event[1] = sizeof(event) - 2; 1305 bt_store_16(event, 2, conn->con_handle); 1306 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1307 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1308 } 1309 1310 void hci_emit_nr_connections_changed(){ 1311 uint8_t event[3]; 1312 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 1313 event[1] = sizeof(event) - 2; 1314 event[2] = nr_hci_connections(); 1315 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1316 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1317 } 1318 1319 void hci_emit_hci_open_failed(){ 1320 uint8_t event[2]; 1321 event[0] = BTSTACK_EVENT_POWERON_FAILED; 1322 event[1] = sizeof(event) - 2; 1323 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1324 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1325 } 1326 1327 #ifndef EMBEDDED 1328 void hci_emit_btstack_version() { 1329 uint8_t event[6]; 1330 event[0] = BTSTACK_EVENT_VERSION; 1331 event[1] = sizeof(event) - 2; 1332 event[2] = BTSTACK_MAJOR; 1333 event[3] = BTSTACK_MINOR; 1334 bt_store_16(event, 4, BTSTACK_REVISION); 1335 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1336 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1337 } 1338 #endif 1339 1340 void hci_emit_system_bluetooth_enabled(uint8_t enabled){ 1341 uint8_t event[3]; 1342 event[0] = BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED; 1343 event[1] = sizeof(event) - 2; 1344 event[2] = enabled; 1345 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1346 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1347 } 1348 1349 void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name){ 1350 uint8_t event[2+1+6+248]; 1351 event[0] = BTSTACK_EVENT_REMOTE_NAME_CACHED; 1352 event[1] = sizeof(event) - 2; 1353 event[2] = 0; // just to be compatible with HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 1354 bt_flip_addr(&event[3], *addr); 1355 memcpy(&event[9], name, 248); 1356 hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1357 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1358 } 1359 1360 void hci_emit_discoverable_enabled(uint8_t enabled){ 1361 uint8_t event[3]; 1362 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 1363 event[1] = sizeof(event) - 2; 1364 event[2] = enabled; 1365 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1366 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1367 } 1368