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 static void hci_update_scan_enable(void); 65 66 // the STACK is here 67 static hci_stack_t hci_stack; 68 69 /** 70 * get connection for a given handle 71 * 72 * @return connection OR NULL, if not found 73 */ 74 hci_connection_t * connection_for_handle(hci_con_handle_t con_handle){ 75 linked_item_t *it; 76 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 77 if ( ((hci_connection_t *) it)->con_handle == con_handle){ 78 return (hci_connection_t *) it; 79 } 80 } 81 return NULL; 82 } 83 84 static void hci_connection_timeout_handler(timer_source_t *timer){ 85 hci_connection_t * connection = linked_item_get_user(&timer->item); 86 #ifdef HAVE_TIME 87 struct timeval tv; 88 gettimeofday(&tv, NULL); 89 if (tv.tv_sec >= connection->timestamp.tv_sec + HCI_CONNECTION_TIMEOUT_MS/1000) { 90 // connections might be timed out 91 hci_emit_l2cap_check_timeout(connection); 92 } 93 #endif 94 #ifdef HAVE_TICK 95 if (embedded_get_ticks() > connection->timestamp + embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 96 // connections might be timed out 97 hci_emit_l2cap_check_timeout(connection); 98 } 99 #endif 100 run_loop_set_timer(timer, HCI_CONNECTION_TIMEOUT_MS); 101 run_loop_add_timer(timer); 102 } 103 104 static void hci_connection_timestamp(hci_connection_t *connection){ 105 #ifdef HAVE_TIME 106 gettimeofday(&connection->timestamp, NULL); 107 #endif 108 #ifdef HAVE_TICK 109 connection->timestamp = embedded_get_ticks(); 110 #endif 111 } 112 113 /** 114 * create connection for given address 115 * 116 * @return connection OR NULL, if no memory left 117 */ 118 static hci_connection_t * create_connection_for_addr(bd_addr_t addr){ 119 hci_connection_t * conn = btstack_memory_hci_connection_get(); 120 if (!conn) return NULL; 121 BD_ADDR_COPY(conn->address, addr); 122 conn->con_handle = 0xffff; 123 conn->authentication_flags = AUTH_FLAGS_NONE; 124 linked_item_set_user(&conn->timeout.item, conn); 125 conn->timeout.process = hci_connection_timeout_handler; 126 hci_connection_timestamp(conn); 127 conn->acl_recombination_length = 0; 128 conn->acl_recombination_pos = 0; 129 conn->num_acl_packets_sent = 0; 130 linked_list_add(&hci_stack.connections, (linked_item_t *) conn); 131 return conn; 132 } 133 134 /** 135 * get connection for given address 136 * 137 * @return connection OR NULL, if not found 138 */ 139 static hci_connection_t * connection_for_address(bd_addr_t address){ 140 linked_item_t *it; 141 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 142 if ( ! BD_ADDR_CMP( ((hci_connection_t *) it)->address, address) ){ 143 return (hci_connection_t *) it; 144 } 145 } 146 return NULL; 147 } 148 149 /** 150 * add authentication flags and reset timer 151 */ 152 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 153 bd_addr_t addr; 154 bt_flip_addr(addr, *(bd_addr_t *) bd_addr); 155 hci_connection_t * conn = connection_for_address(addr); 156 if (conn) { 157 conn->authentication_flags |= flags; 158 hci_connection_timestamp(conn); 159 } 160 } 161 162 int hci_authentication_active_for_handle(hci_con_handle_t handle){ 163 hci_connection_t * conn = connection_for_handle(handle); 164 if (!conn) return 0; 165 if (!conn->authentication_flags) return 0; 166 if (conn->authentication_flags & SENT_LINK_KEY_REPLY) return 0; 167 if (conn->authentication_flags & RECV_LINK_KEY_NOTIFICATION) return 0; 168 return 1; 169 } 170 171 void hci_drop_link_key_for_bd_addr(bd_addr_t *addr){ 172 if (hci_stack.remote_device_db) { 173 hci_stack.remote_device_db->delete_link_key(addr); 174 } 175 } 176 177 178 /** 179 * count connections 180 */ 181 static int nr_hci_connections(void){ 182 int count = 0; 183 linked_item_t *it; 184 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next, count++); 185 return count; 186 } 187 188 /** 189 * Dummy handler called by HCI 190 */ 191 static void dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 192 } 193 194 uint8_t hci_number_outgoing_packets(hci_con_handle_t handle){ 195 hci_connection_t * connection = connection_for_handle(handle); 196 if (!connection) { 197 log_error("hci_number_outgoing_packets connectino for handle %u does not exist!\n", handle); 198 return 0; 199 } 200 return connection->num_acl_packets_sent; 201 } 202 203 uint8_t hci_number_free_acl_slots(){ 204 uint8_t free_slots = hci_stack.total_num_acl_packets; 205 linked_item_t *it; 206 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 207 hci_connection_t * connection = (hci_connection_t *) it; 208 if (free_slots < connection->num_acl_packets_sent) { 209 log_error("hci_number_free_acl_slots: sum of outgoing packets > total acl packets!\n"); 210 return 0; 211 } 212 free_slots -= connection->num_acl_packets_sent; 213 } 214 return free_slots; 215 } 216 217 int hci_can_send_packet_now(uint8_t packet_type){ 218 219 // check for async hci transport implementations 220 if (hci_stack.hci_transport->can_send_packet_now){ 221 if (!hci_stack.hci_transport->can_send_packet_now(packet_type)){ 222 return 0; 223 } 224 } 225 226 // check regular Bluetooth flow control 227 switch (packet_type) { 228 case HCI_ACL_DATA_PACKET: 229 return hci_number_free_acl_slots(); 230 case HCI_COMMAND_DATA_PACKET: 231 return hci_stack.num_cmd_packets; 232 default: 233 return 0; 234 } 235 } 236 237 int hci_send_acl_packet(uint8_t *packet, int size){ 238 239 // check for free places on BT module 240 if (!hci_number_free_acl_slots()) return BTSTACK_ACL_BUFFERS_FULL; 241 242 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 243 hci_connection_t *connection = connection_for_handle( con_handle); 244 if (!connection) return 0; 245 hci_connection_timestamp(connection); 246 247 // count packet 248 connection->num_acl_packets_sent++; 249 // log_info("hci_send_acl_packet - handle %u, sent %u\n", connection->con_handle, connection->num_acl_packets_sent); 250 251 // send packet 252 int err = hci_stack.hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 253 254 return err; 255 } 256 257 static void acl_handler(uint8_t *packet, int size){ 258 259 // get info 260 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 261 hci_connection_t *conn = connection_for_handle(con_handle); 262 uint8_t acl_flags = READ_ACL_FLAGS(packet); 263 uint16_t acl_length = READ_ACL_LENGTH(packet); 264 265 // ignore non-registered handle 266 if (!conn){ 267 log_error( "hci.c: acl_handler called with non-registered handle %u!\n" , con_handle); 268 return; 269 } 270 271 // update idle timestamp 272 hci_connection_timestamp(conn); 273 274 // handle different packet types 275 switch (acl_flags & 0x03) { 276 277 case 0x01: // continuation fragment 278 279 // sanity check 280 if (conn->acl_recombination_pos == 0) { 281 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x\n", con_handle); 282 return; 283 } 284 285 // append fragment payload (header already stored) 286 memcpy(&conn->acl_recombination_buffer[conn->acl_recombination_pos], &packet[4], acl_length ); 287 conn->acl_recombination_pos += acl_length; 288 289 // log_error( "ACL Cont Fragment: acl_len %u, combined_len %u, l2cap_len %u\n", acl_length, 290 // conn->acl_recombination_pos, conn->acl_recombination_length); 291 292 // forward complete L2CAP packet if complete. 293 if (conn->acl_recombination_pos >= conn->acl_recombination_length + 4 + 4){ // pos already incl. ACL header 294 295 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, conn->acl_recombination_buffer, conn->acl_recombination_pos); 296 // reset recombination buffer 297 conn->acl_recombination_length = 0; 298 conn->acl_recombination_pos = 0; 299 } 300 break; 301 302 case 0x02: { // first fragment 303 304 // sanity check 305 if (conn->acl_recombination_pos) { 306 log_error( "ACL First Fragment but data in buffer for handle 0x%02x\n", con_handle); 307 return; 308 } 309 310 // peek into L2CAP packet! 311 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 312 313 // log_error( "ACL First Fragment: acl_len %u, l2cap_len %u\n", acl_length, l2cap_length); 314 315 // compare fragment size to L2CAP packet size 316 if (acl_length >= l2cap_length + 4){ 317 318 // forward fragment as L2CAP packet 319 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, packet, acl_length + 4); 320 321 } else { 322 // store first fragment and tweak acl length for complete package 323 memcpy(conn->acl_recombination_buffer, packet, acl_length + 4); 324 conn->acl_recombination_pos = acl_length + 4; 325 conn->acl_recombination_length = l2cap_length; 326 bt_store_16(conn->acl_recombination_buffer, 2, l2cap_length +4); 327 } 328 break; 329 330 } 331 default: 332 log_error( "hci.c: acl_handler called with invalid packet boundary flags %u\n", acl_flags & 0x03); 333 return; 334 } 335 336 // execute main loop 337 hci_run(); 338 } 339 340 static void hci_shutdown_connection(hci_connection_t *conn){ 341 log_info("Connection closed: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 342 343 // cancel all l2cap connections 344 hci_emit_disconnection_complete(conn->con_handle, 0x16); // terminated by local host 345 346 run_loop_remove_timer(&conn->timeout); 347 348 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 349 btstack_memory_hci_connection_free( conn ); 350 351 // now it's gone 352 hci_emit_nr_connections_changed(); 353 } 354 355 static const uint16_t packet_type_sizes[] = { 356 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 357 HCI_ACL_DH1_SIZE, 0, 0, 0, 358 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 359 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 360 }; 361 362 static uint16_t hci_acl_packet_types_for_buffer_size(uint16_t buffer_size){ 363 uint16_t packet_types = 0; 364 int i; 365 for (i=0;i<16;i++){ 366 if (packet_type_sizes[i] == 0) continue; 367 if (packet_type_sizes[i] <= buffer_size){ 368 packet_types |= 1 << i; 369 } 370 } 371 // flip bits for "may not be used" 372 packet_types ^= 0x3306; 373 return packet_types; 374 } 375 376 uint16_t hci_usable_acl_packet_types(void){ 377 return hci_stack.packet_types; 378 } 379 380 uint8_t* hci_get_outgoing_acl_packet_buffer(void){ 381 // hci packet buffer is >= acl data packet length 382 return hci_stack.hci_packet_buffer; 383 } 384 385 uint16_t hci_max_acl_data_packet_length(){ 386 return hci_stack.acl_data_packet_length; 387 } 388 389 // avoid huge local variables 390 #ifndef EMBEDDED 391 static device_name_t device_name; 392 #endif 393 static void event_handler(uint8_t *packet, int size){ 394 bd_addr_t addr; 395 uint8_t link_type; 396 hci_con_handle_t handle; 397 hci_connection_t * conn; 398 int i; 399 400 // printf("HCI:EVENT:%02x\n", packet[0]); 401 402 switch (packet[0]) { 403 404 case HCI_EVENT_COMMAND_COMPLETE: 405 // get num cmd packets 406 // log_info("HCI_EVENT_COMMAND_COMPLETE cmds old %u - new %u\n", hci_stack.num_cmd_packets, packet[2]); 407 hci_stack.num_cmd_packets = packet[2]; 408 409 if (COMMAND_COMPLETE_EVENT(packet, hci_read_buffer_size)){ 410 // from offset 5 411 // status 412 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 413 hci_stack.acl_data_packet_length = READ_BT_16(packet, 6); 414 // ignore: SCO data packet len (8) 415 hci_stack.total_num_acl_packets = packet[9]; 416 // ignore: total num SCO packets 417 if (hci_stack.state == HCI_STATE_INITIALIZING){ 418 // determine usable ACL payload size 419 if (HCI_ACL_PAYLOAD_SIZE < hci_stack.acl_data_packet_length){ 420 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 421 } 422 // determine usable ACL packet types 423 hci_stack.packet_types = hci_acl_packet_types_for_buffer_size(hci_stack.acl_data_packet_length); 424 425 log_error("hci_read_buffer_size: used size %u, count %u, packet types %04x\n", 426 hci_stack.acl_data_packet_length, hci_stack.total_num_acl_packets, hci_stack.packet_types); 427 } 428 } 429 if (COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 430 hci_emit_discoverable_enabled(hci_stack.discoverable); 431 } 432 break; 433 434 case HCI_EVENT_COMMAND_STATUS: 435 // get num cmd packets 436 // log_info("HCI_EVENT_COMMAND_STATUS cmds - old %u - new %u\n", hci_stack.num_cmd_packets, packet[3]); 437 hci_stack.num_cmd_packets = packet[3]; 438 break; 439 440 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS: 441 for (i=0; i<packet[2];i++){ 442 handle = READ_BT_16(packet, 3 + 2*i); 443 uint16_t num_packets = READ_BT_16(packet, 3 + packet[2]*2 + 2*i); 444 conn = connection_for_handle(handle); 445 if (!conn){ 446 log_error("hci_number_completed_packet lists unused con handle %u\n", handle); 447 continue; 448 } 449 conn->num_acl_packets_sent -= num_packets; 450 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u\n", num_packets, handle, conn->num_acl_packets_sent); 451 } 452 break; 453 454 case HCI_EVENT_CONNECTION_REQUEST: 455 bt_flip_addr(addr, &packet[2]); 456 // TODO: eval COD 8-10 457 link_type = packet[11]; 458 log_info("Connection_incoming: %s, type %u\n", bd_addr_to_str(addr), link_type); 459 if (link_type == 1) { // ACL 460 conn = connection_for_address(addr); 461 if (!conn) { 462 conn = create_connection_for_addr(addr); 463 } 464 if (!conn) { 465 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 466 hci_stack.decline_reason = 0x0d; 467 BD_ADDR_COPY(hci_stack.decline_addr, addr); 468 break; 469 } 470 conn->state = RECEIVED_CONNECTION_REQUEST; 471 hci_run(); 472 } else { 473 // SYNCHRONOUS CONNECTION LIMIT TO A DEVICE EXCEEDED (0X0A) 474 hci_stack.decline_reason = 0x0a; 475 BD_ADDR_COPY(hci_stack.decline_addr, addr); 476 } 477 break; 478 479 case HCI_EVENT_CONNECTION_COMPLETE: 480 // Connection management 481 bt_flip_addr(addr, &packet[5]); 482 log_info("Connection_complete (status=%u) %s\n", packet[2], bd_addr_to_str(addr)); 483 conn = connection_for_address(addr); 484 if (conn) { 485 if (!packet[2]){ 486 conn->state = OPEN; 487 conn->con_handle = READ_BT_16(packet, 3); 488 489 // restart timer 490 run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 491 run_loop_add_timer(&conn->timeout); 492 493 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 494 495 hci_emit_nr_connections_changed(); 496 } else { 497 // connection failed, remove entry 498 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 499 btstack_memory_hci_connection_free( conn ); 500 501 // if authentication error, also delete link key 502 if (packet[2] == 0x05) { 503 hci_drop_link_key_for_bd_addr(&addr); 504 } 505 } 506 } 507 break; 508 509 case HCI_EVENT_LINK_KEY_REQUEST: 510 log_info("HCI_EVENT_LINK_KEY_REQUEST\n"); 511 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_REQUEST); 512 if (!hci_stack.remote_device_db) break; 513 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], HANDLE_LINK_KEY_REQUEST); 514 hci_run(); 515 // request already answered 516 return; 517 518 case HCI_EVENT_LINK_KEY_NOTIFICATION: 519 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_NOTIFICATION); 520 if (!hci_stack.remote_device_db) break; 521 bt_flip_addr(addr, &packet[2]); 522 hci_stack.remote_device_db->put_link_key(&addr, (link_key_t *) &packet[8]); 523 // still forward event to allow dismiss of pairing dialog 524 break; 525 526 case HCI_EVENT_PIN_CODE_REQUEST: 527 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_PIN_CODE_REQUEST); 528 break; 529 530 #ifndef EMBEDDED 531 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 532 if (!hci_stack.remote_device_db) break; 533 if (packet[2]) break; // status not ok 534 bt_flip_addr(addr, &packet[3]); 535 // fix for invalid remote names - terminate on 0xff 536 for (i=0; i<248;i++){ 537 if (packet[9+i] == 0xff){ 538 packet[9+i] = 0; 539 break; 540 } 541 } 542 memset(&device_name, 0, sizeof(device_name_t)); 543 strncpy((char*) device_name, (char*) &packet[9], 248); 544 hci_stack.remote_device_db->put_name(&addr, &device_name); 545 break; 546 547 case HCI_EVENT_INQUIRY_RESULT: 548 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 549 if (!hci_stack.remote_device_db) break; 550 // first send inq result packet 551 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 552 // then send cached remote names 553 for (i=0; i<packet[2];i++){ 554 bt_flip_addr(addr, &packet[3+i*6]); 555 if (hci_stack.remote_device_db->get_name(&addr, &device_name)){ 556 hci_emit_remote_name_cached(&addr, &device_name); 557 } 558 } 559 return; 560 #endif 561 562 case HCI_EVENT_DISCONNECTION_COMPLETE: 563 if (!packet[2]){ 564 handle = READ_BT_16(packet, 3); 565 hci_connection_t * conn = connection_for_handle(handle); 566 if (conn) { 567 hci_shutdown_connection(conn); 568 } 569 } 570 break; 571 572 case HCI_EVENT_HARDWARE_ERROR: 573 if(hci_stack.control->hw_error){ 574 (*hci_stack.control->hw_error)(); 575 } 576 break; 577 578 #ifdef HAVE_BLE 579 case HCI_EVENT_LE_META: 580 switch (packet[2]) { 581 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 582 // Connection management 583 bt_flip_addr(addr, &packet[8]); 584 log_info("LE Connection_complete (status=%u) %s\n", packet[3], bd_addr_to_str(addr)); 585 // LE connections are auto-accepted, so just create a connection if there isn't one already 586 conn = connection_for_address(addr); 587 if (packet[3]){ 588 if (conn){ 589 // outgoing connection failed, remove entry 590 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 591 btstack_memory_hci_connection_free( conn ); 592 593 } 594 // if authentication error, also delete link key 595 if (packet[3] == 0x05) { 596 hci_drop_link_key_for_bd_addr(&addr); 597 } 598 break; 599 } 600 if (!conn){ 601 conn = create_connection_for_addr(addr); 602 } 603 if (!conn){ 604 // no memory 605 break; 606 } 607 608 conn->state = OPEN; 609 conn->con_handle = READ_BT_16(packet, 4); 610 611 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 612 613 // restart timer 614 // run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 615 // run_loop_add_timer(&conn->timeout); 616 617 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 618 619 hci_emit_nr_connections_changed(); 620 break; 621 622 default: 623 break; 624 } 625 break; 626 #endif 627 628 default: 629 break; 630 } 631 632 // handle BT initialization 633 if (hci_stack.state == HCI_STATE_INITIALIZING){ 634 // handle H4 synchronization loss on restart 635 // if (hci_stack.substate == 1 && packet[0] == HCI_EVENT_HARDWARE_ERROR){ 636 // hci_stack.substate = 0; 637 // } 638 // handle normal init sequence 639 if (hci_stack.substate % 2){ 640 // odd: waiting for event 641 if (packet[0] == HCI_EVENT_COMMAND_COMPLETE){ 642 hci_stack.substate++; 643 } 644 } 645 } 646 647 // help with BT sleep 648 if (hci_stack.state == HCI_STATE_FALLING_ASLEEP 649 && hci_stack.substate == 1 650 && COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 651 hci_stack.substate++; 652 } 653 654 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 655 656 // execute main loop 657 hci_run(); 658 } 659 660 void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 661 switch (packet_type) { 662 case HCI_EVENT_PACKET: 663 event_handler(packet, size); 664 break; 665 case HCI_ACL_DATA_PACKET: 666 acl_handler(packet, size); 667 break; 668 default: 669 break; 670 } 671 } 672 673 /** Register HCI packet handlers */ 674 void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){ 675 hci_stack.packet_handler = handler; 676 } 677 678 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t * remote_device_db){ 679 680 // reference to use transport layer implementation 681 hci_stack.hci_transport = transport; 682 683 // references to used control implementation 684 hci_stack.control = control; 685 686 // reference to used config 687 hci_stack.config = config; 688 689 // no connections yet 690 hci_stack.connections = NULL; 691 hci_stack.discoverable = 0; 692 693 // enable page scan by until l2cap takes over control 694 hci_stack.connectable = 1; 695 696 // no pending cmds 697 hci_stack.decline_reason = 0; 698 hci_stack.new_scan_enable_value = 0xff; 699 700 // higher level handler 701 hci_stack.packet_handler = dummy_handler; 702 703 // store and open remote device db 704 hci_stack.remote_device_db = remote_device_db; 705 if (hci_stack.remote_device_db) { 706 hci_stack.remote_device_db->open(); 707 } 708 709 // max acl payload size defined in config.h 710 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 711 712 // register packet handlers with transport 713 transport->register_packet_handler(&packet_handler); 714 715 hci_stack.state = HCI_STATE_OFF; 716 } 717 718 void hci_close(){ 719 // close remote device db 720 if (hci_stack.remote_device_db) { 721 hci_stack.remote_device_db->close(); 722 } 723 while (hci_stack.connections) { 724 hci_shutdown_connection((hci_connection_t *) hci_stack.connections); 725 } 726 hci_power_control(HCI_POWER_OFF); 727 } 728 729 // State-Module-Driver overview 730 // state module low-level 731 // HCI_STATE_OFF off close 732 // HCI_STATE_INITIALIZING, on open 733 // HCI_STATE_WORKING, on open 734 // HCI_STATE_HALTING, on open 735 // HCI_STATE_SLEEPING, off/sleep close 736 // HCI_STATE_FALLING_ASLEEP on open 737 738 static int hci_power_control_on(void){ 739 740 // power on 741 int err = 0; 742 if (hci_stack.control && hci_stack.control->on){ 743 err = (*hci_stack.control->on)(hci_stack.config); 744 } 745 if (err){ 746 log_error( "POWER_ON failed\n"); 747 hci_emit_hci_open_failed(); 748 return err; 749 } 750 751 // open low-level device 752 err = hci_stack.hci_transport->open(hci_stack.config); 753 if (err){ 754 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 755 if (hci_stack.control && hci_stack.control->off){ 756 (*hci_stack.control->off)(hci_stack.config); 757 } 758 hci_emit_hci_open_failed(); 759 return err; 760 } 761 return 0; 762 } 763 764 static void hci_power_control_off(void){ 765 766 log_info("hci_power_control_off\n"); 767 768 // close low-level device 769 hci_stack.hci_transport->close(hci_stack.config); 770 771 log_info("hci_power_control_off - hci_transport closed\n"); 772 773 // power off 774 if (hci_stack.control && hci_stack.control->off){ 775 (*hci_stack.control->off)(hci_stack.config); 776 } 777 778 log_info("hci_power_control_off - control closed\n"); 779 780 hci_stack.state = HCI_STATE_OFF; 781 } 782 783 static void hci_power_control_sleep(void){ 784 785 log_info("hci_power_control_sleep\n"); 786 787 #if 0 788 // don't close serial port during sleep 789 790 // close low-level device 791 hci_stack.hci_transport->close(hci_stack.config); 792 #endif 793 794 // sleep mode 795 if (hci_stack.control && hci_stack.control->sleep){ 796 (*hci_stack.control->sleep)(hci_stack.config); 797 } 798 799 hci_stack.state = HCI_STATE_SLEEPING; 800 } 801 802 static int hci_power_control_wake(void){ 803 804 log_info("hci_power_control_wake\n"); 805 806 // wake on 807 if (hci_stack.control && hci_stack.control->wake){ 808 (*hci_stack.control->wake)(hci_stack.config); 809 } 810 811 #if 0 812 // open low-level device 813 int err = hci_stack.hci_transport->open(hci_stack.config); 814 if (err){ 815 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 816 if (hci_stack.control && hci_stack.control->off){ 817 (*hci_stack.control->off)(hci_stack.config); 818 } 819 hci_emit_hci_open_failed(); 820 return err; 821 } 822 #endif 823 824 return 0; 825 } 826 827 828 int hci_power_control(HCI_POWER_MODE power_mode){ 829 830 log_info("hci_power_control: %u, current mode %u\n", power_mode, hci_stack.state); 831 832 int err = 0; 833 switch (hci_stack.state){ 834 835 case HCI_STATE_OFF: 836 switch (power_mode){ 837 case HCI_POWER_ON: 838 err = hci_power_control_on(); 839 if (err) return err; 840 // set up state machine 841 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 842 hci_stack.state = HCI_STATE_INITIALIZING; 843 hci_stack.substate = 0; 844 break; 845 case HCI_POWER_OFF: 846 // do nothing 847 break; 848 case HCI_POWER_SLEEP: 849 // do nothing (with SLEEP == OFF) 850 break; 851 } 852 break; 853 854 case HCI_STATE_INITIALIZING: 855 switch (power_mode){ 856 case HCI_POWER_ON: 857 // do nothing 858 break; 859 case HCI_POWER_OFF: 860 // no connections yet, just turn it off 861 hci_power_control_off(); 862 break; 863 case HCI_POWER_SLEEP: 864 // no connections yet, just turn it off 865 hci_power_control_sleep(); 866 break; 867 } 868 break; 869 870 case HCI_STATE_WORKING: 871 switch (power_mode){ 872 case HCI_POWER_ON: 873 // do nothing 874 break; 875 case HCI_POWER_OFF: 876 // see hci_run 877 hci_stack.state = HCI_STATE_HALTING; 878 break; 879 case HCI_POWER_SLEEP: 880 // see hci_run 881 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 882 hci_stack.substate = 0; 883 break; 884 } 885 break; 886 887 case HCI_STATE_HALTING: 888 switch (power_mode){ 889 case HCI_POWER_ON: 890 // set up state machine 891 hci_stack.state = HCI_STATE_INITIALIZING; 892 hci_stack.substate = 0; 893 break; 894 case HCI_POWER_OFF: 895 // do nothing 896 break; 897 case HCI_POWER_SLEEP: 898 // see hci_run 899 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 900 hci_stack.substate = 0; 901 break; 902 } 903 break; 904 905 case HCI_STATE_FALLING_ASLEEP: 906 switch (power_mode){ 907 case HCI_POWER_ON: 908 909 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 910 // nothing to do, if H4 supports power management 911 if (bt_control_iphone_power_management_enabled()){ 912 hci_stack.state = HCI_STATE_INITIALIZING; 913 hci_stack.substate = 6; 914 break; 915 } 916 #endif 917 // set up state machine 918 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 919 hci_stack.state = HCI_STATE_INITIALIZING; 920 hci_stack.substate = 0; 921 break; 922 case HCI_POWER_OFF: 923 // see hci_run 924 hci_stack.state = HCI_STATE_HALTING; 925 break; 926 case HCI_POWER_SLEEP: 927 // do nothing 928 break; 929 } 930 break; 931 932 case HCI_STATE_SLEEPING: 933 switch (power_mode){ 934 case HCI_POWER_ON: 935 936 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 937 // nothing to do, if H4 supports power management 938 if (bt_control_iphone_power_management_enabled()){ 939 hci_stack.state = HCI_STATE_INITIALIZING; 940 hci_stack.substate = 6; 941 hci_update_scan_enable(); 942 break; 943 } 944 #endif 945 err = hci_power_control_wake(); 946 if (err) return err; 947 // set up state machine 948 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 949 hci_stack.state = HCI_STATE_INITIALIZING; 950 hci_stack.substate = 0; 951 break; 952 case HCI_POWER_OFF: 953 hci_stack.state = HCI_STATE_HALTING; 954 break; 955 case HCI_POWER_SLEEP: 956 // do nothing 957 break; 958 } 959 break; 960 } 961 962 // create internal event 963 hci_emit_state(); 964 965 // trigger next/first action 966 hci_run(); 967 968 return 0; 969 } 970 971 static void hci_update_scan_enable(void){ 972 // 2 = page scan, 1 = inq scan 973 hci_stack.new_scan_enable_value = hci_stack.connectable << 1 | hci_stack.discoverable; 974 hci_run(); 975 } 976 977 void hci_discoverable_control(uint8_t enable){ 978 if (enable) enable = 1; // normalize argument 979 980 if (hci_stack.discoverable == enable){ 981 hci_emit_discoverable_enabled(hci_stack.discoverable); 982 return; 983 } 984 985 hci_stack.discoverable = enable; 986 hci_update_scan_enable(); 987 } 988 989 void hci_connectable_control(uint8_t enable){ 990 if (enable) enable = 1; // normalize argument 991 992 // don't emit event 993 if (hci_stack.connectable == enable) return; 994 995 hci_stack.connectable = enable; 996 hci_update_scan_enable(); 997 } 998 999 void hci_run(){ 1000 1001 hci_connection_t * connection; 1002 linked_item_t * it; 1003 1004 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1005 1006 // global/non-connection oriented commands 1007 1008 // decline incoming connections 1009 if (hci_stack.decline_reason){ 1010 uint8_t reason = hci_stack.decline_reason; 1011 hci_stack.decline_reason = 0; 1012 hci_send_cmd(&hci_reject_connection_request, hci_stack.decline_addr, reason); 1013 } 1014 1015 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1016 1017 // send scan enable 1018 if (hci_stack.new_scan_enable_value != 0xff){ 1019 hci_send_cmd(&hci_write_scan_enable, hci_stack.new_scan_enable_value); 1020 hci_stack.new_scan_enable_value = 0xff; 1021 } 1022 1023 // send pending HCI commands 1024 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 1025 1026 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1027 1028 connection = (hci_connection_t *) it; 1029 1030 if (connection->state == RECEIVED_CONNECTION_REQUEST){ 1031 log_info("sending hci_accept_connection_request\n"); 1032 hci_send_cmd(&hci_accept_connection_request, connection->address, 1); 1033 connection->state = ACCEPTED_CONNECTION_REQUEST; 1034 } 1035 1036 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1037 1038 if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){ 1039 link_key_t link_key; 1040 log_info("responding to link key request\n"); 1041 if ( hci_stack.remote_device_db->get_link_key( &connection->address, &link_key)){ 1042 hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key); 1043 } else { 1044 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 1045 } 1046 connection->authentication_flags &= ~HANDLE_LINK_KEY_REQUEST; 1047 } 1048 } 1049 1050 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1051 1052 switch (hci_stack.state){ 1053 case HCI_STATE_INITIALIZING: 1054 // log_info("hci_init: substate %u\n", hci_stack.substate); 1055 if (hci_stack.substate % 2) { 1056 // odd: waiting for command completion 1057 return; 1058 } 1059 switch (hci_stack.substate >> 1){ 1060 case 0: // RESET 1061 hci_send_cmd(&hci_reset); 1062 if (hci_stack.config == 0 || ((hci_uart_config_t *)hci_stack.config)->baudrate_main == 0){ 1063 // skip baud change 1064 hci_stack.substate = 4; // >> 1 = 2 1065 } 1066 break; 1067 case 1: // SEND BAUD CHANGE 1068 hci_stack.control->baudrate_cmd(hci_stack.config, ((hci_uart_config_t *)hci_stack.config)->baudrate_main, hci_stack.hci_packet_buffer); 1069 hci_send_cmd_packet(hci_stack.hci_packet_buffer, 3 + hci_stack.hci_packet_buffer[2]); 1070 break; 1071 case 2: // LOCAL BAUD CHANGE 1072 hci_stack.hci_transport->set_baudrate(((hci_uart_config_t *)hci_stack.config)->baudrate_main); 1073 hci_stack.substate += 2; 1074 // break missing here for fall through 1075 1076 case 3: 1077 // custom initialization 1078 if (hci_stack.control && hci_stack.control->next_cmd){ 1079 int valid_cmd = (*hci_stack.control->next_cmd)(hci_stack.config, hci_stack.hci_packet_buffer); 1080 if (valid_cmd){ 1081 int size = 3 + hci_stack.hci_packet_buffer[2]; 1082 hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack.hci_packet_buffer, size); 1083 hci_stack.substate = 4; // more init commands 1084 break; 1085 } 1086 log_info("hci_run: init script done\n\r"); 1087 } 1088 // otherwise continue 1089 hci_send_cmd(&hci_read_bd_addr); 1090 break; 1091 case 4: 1092 hci_send_cmd(&hci_read_buffer_size); 1093 break; 1094 case 5: 1095 // ca. 15 sec 1096 hci_send_cmd(&hci_write_page_timeout, 0x6000); 1097 break; 1098 case 6: 1099 hci_send_cmd(&hci_write_scan_enable, (hci_stack.connectable << 1) | hci_stack.discoverable); // page scan 1100 break; 1101 case 7: 1102 #ifndef EMBEDDED 1103 { 1104 char hostname[30]; 1105 gethostname(hostname, 30); 1106 hostname[29] = '\0'; 1107 hci_send_cmd(&hci_write_local_name, hostname); 1108 break; 1109 } 1110 case 8: 1111 #ifdef USE_BLUETOOL 1112 hci_send_cmd(&hci_write_class_of_device, 0x007a020c); // Smartphone 1113 break; 1114 1115 case 9: 1116 #endif 1117 #endif 1118 // done. 1119 hci_stack.state = HCI_STATE_WORKING; 1120 hci_emit_state(); 1121 break; 1122 default: 1123 break; 1124 } 1125 hci_stack.substate++; 1126 break; 1127 1128 case HCI_STATE_HALTING: 1129 1130 log_info("HCI_STATE_HALTING\n"); 1131 // close all open connections 1132 connection = (hci_connection_t *) hci_stack.connections; 1133 if (connection){ 1134 1135 // send disconnect 1136 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1137 1138 log_info("HCI_STATE_HALTING, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1139 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1140 1141 // send disconnected event right away - causes higher layer connections to get closed, too. 1142 hci_shutdown_connection(connection); 1143 return; 1144 } 1145 log_info("HCI_STATE_HALTING, calling off\n"); 1146 1147 // switch mode 1148 hci_power_control_off(); 1149 1150 log_info("HCI_STATE_HALTING, emitting state\n"); 1151 hci_emit_state(); 1152 log_info("HCI_STATE_HALTING, done\n"); 1153 break; 1154 1155 case HCI_STATE_FALLING_ASLEEP: 1156 switch(hci_stack.substate) { 1157 case 0: 1158 log_info("HCI_STATE_FALLING_ASLEEP\n"); 1159 // close all open connections 1160 connection = (hci_connection_t *) hci_stack.connections; 1161 1162 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1163 // don't close connections, if H4 supports power management 1164 if (bt_control_iphone_power_management_enabled()){ 1165 connection = NULL; 1166 } 1167 #endif 1168 if (connection){ 1169 1170 // send disconnect 1171 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1172 1173 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1174 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1175 1176 // send disconnected event right away - causes higher layer connections to get closed, too. 1177 hci_shutdown_connection(connection); 1178 return; 1179 } 1180 1181 // disable page and inquiry scan 1182 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1183 1184 log_info("HCI_STATE_HALTING, disabling inq cans\n"); 1185 hci_send_cmd(&hci_write_scan_enable, hci_stack.connectable << 1); // drop inquiry scan but keep page scan 1186 1187 // continue in next sub state 1188 hci_stack.substate++; 1189 break; 1190 case 1: 1191 // wait for command complete "hci_write_scan_enable" in event_handler(); 1192 break; 1193 case 2: 1194 log_info("HCI_STATE_HALTING, calling sleep\n"); 1195 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1196 // don't actually go to sleep, if H4 supports power management 1197 if (bt_control_iphone_power_management_enabled()){ 1198 // SLEEP MODE reached 1199 hci_stack.state = HCI_STATE_SLEEPING; 1200 hci_emit_state(); 1201 break; 1202 } 1203 #endif 1204 // switch mode 1205 hci_power_control_sleep(); // changes hci_stack.state to SLEEP 1206 hci_emit_state(); 1207 break; 1208 1209 default: 1210 break; 1211 } 1212 break; 1213 1214 default: 1215 break; 1216 } 1217 } 1218 1219 int hci_send_cmd_packet(uint8_t *packet, int size){ 1220 bd_addr_t addr; 1221 hci_connection_t * conn; 1222 // house-keeping 1223 1224 // create_connection? 1225 if (IS_COMMAND(packet, hci_create_connection)){ 1226 bt_flip_addr(addr, &packet[3]); 1227 log_info("Create_connection to %s\n", bd_addr_to_str(addr)); 1228 conn = connection_for_address(addr); 1229 if (conn) { 1230 // if connection exists 1231 if (conn->state == OPEN) { 1232 // and OPEN, emit connection complete command 1233 hci_emit_connection_complete(conn, 0); 1234 } 1235 // otherwise, just ignore as it is already in the open process 1236 return 0; // don't sent packet to controller 1237 1238 } 1239 // create connection struct and register, state = SENT_CREATE_CONNECTION 1240 conn = create_connection_for_addr(addr); 1241 if (!conn){ 1242 // notify client that alloc failed 1243 hci_emit_connection_complete(conn, BTSTACK_MEMORY_ALLOC_FAILED); 1244 return 0; // don't sent packet to controller 1245 } 1246 conn->state = SENT_CREATE_CONNECTION; 1247 } 1248 1249 if (IS_COMMAND(packet, hci_link_key_request_reply)){ 1250 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY); 1251 } 1252 if (IS_COMMAND(packet, hci_link_key_request_negative_reply)){ 1253 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST); 1254 } 1255 if (IS_COMMAND(packet, hci_pin_code_request_reply)){ 1256 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_REPLY); 1257 } 1258 if (IS_COMMAND(packet, hci_pin_code_request_negative_reply)){ 1259 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_NEGATIVE_REPLY); 1260 } 1261 1262 if (IS_COMMAND(packet, hci_delete_stored_link_key)){ 1263 if (hci_stack.remote_device_db){ 1264 bt_flip_addr(addr, &packet[3]); 1265 hci_stack.remote_device_db->delete_link_key(&addr); 1266 } 1267 } 1268 1269 hci_stack.num_cmd_packets--; 1270 return hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 1271 } 1272 1273 /** 1274 * pre: numcmds >= 0 - it's allowed to send a command to the controller 1275 */ 1276 int hci_send_cmd(const hci_cmd_t *cmd, ...){ 1277 va_list argptr; 1278 va_start(argptr, cmd); 1279 uint16_t size = hci_create_cmd_internal(hci_stack.hci_packet_buffer, cmd, argptr); 1280 va_end(argptr); 1281 return hci_send_cmd_packet(hci_stack.hci_packet_buffer, size); 1282 } 1283 1284 // Create various non-HCI events. 1285 // TODO: generalize, use table similar to hci_create_command 1286 1287 void hci_emit_state(){ 1288 uint8_t event[3]; 1289 event[0] = BTSTACK_EVENT_STATE; 1290 event[1] = sizeof(event) - 2; 1291 event[2] = hci_stack.state; 1292 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1293 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1294 } 1295 1296 void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status){ 1297 uint8_t event[13]; 1298 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 1299 event[1] = sizeof(event) - 2; 1300 event[2] = status; 1301 bt_store_16(event, 3, conn->con_handle); 1302 bt_flip_addr(&event[5], conn->address); 1303 event[11] = 1; // ACL connection 1304 event[12] = 0; // encryption disabled 1305 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1306 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1307 } 1308 1309 void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason){ 1310 uint8_t event[6]; 1311 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 1312 event[1] = sizeof(event) - 2; 1313 event[2] = 0; // status = OK 1314 bt_store_16(event, 3, handle); 1315 event[5] = reason; 1316 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1317 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1318 } 1319 1320 void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 1321 uint8_t event[4]; 1322 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 1323 event[1] = sizeof(event) - 2; 1324 bt_store_16(event, 2, conn->con_handle); 1325 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1326 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1327 } 1328 1329 void hci_emit_nr_connections_changed(){ 1330 uint8_t event[3]; 1331 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 1332 event[1] = sizeof(event) - 2; 1333 event[2] = nr_hci_connections(); 1334 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1335 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1336 } 1337 1338 void hci_emit_hci_open_failed(){ 1339 uint8_t event[2]; 1340 event[0] = BTSTACK_EVENT_POWERON_FAILED; 1341 event[1] = sizeof(event) - 2; 1342 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1343 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1344 } 1345 1346 #ifndef EMBEDDED 1347 void hci_emit_btstack_version() { 1348 uint8_t event[6]; 1349 event[0] = BTSTACK_EVENT_VERSION; 1350 event[1] = sizeof(event) - 2; 1351 event[2] = BTSTACK_MAJOR; 1352 event[3] = BTSTACK_MINOR; 1353 bt_store_16(event, 4, BTSTACK_REVISION); 1354 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1355 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1356 } 1357 #endif 1358 1359 void hci_emit_system_bluetooth_enabled(uint8_t enabled){ 1360 uint8_t event[3]; 1361 event[0] = BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED; 1362 event[1] = sizeof(event) - 2; 1363 event[2] = enabled; 1364 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1365 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1366 } 1367 1368 void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name){ 1369 uint8_t event[2+1+6+248]; 1370 event[0] = BTSTACK_EVENT_REMOTE_NAME_CACHED; 1371 event[1] = sizeof(event) - 2; 1372 event[2] = 0; // just to be compatible with HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 1373 bt_flip_addr(&event[3], *addr); 1374 memcpy(&event[9], name, 248); 1375 hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1376 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1377 } 1378 1379 void hci_emit_discoverable_enabled(uint8_t enabled){ 1380 uint8_t event[3]; 1381 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 1382 event[1] = sizeof(event) - 2; 1383 event[2] = enabled; 1384 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1385 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1386 } 1387