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 handled by hci_run() as HANDLE_LINK_KEY_REQUEST gets set 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 // PIN CODE REQUEST means the link key request didn't succee -> delete stored link key 529 if (!hci_stack.remote_device_db) break; 530 bt_flip_addr(addr, &packet[2]); 531 hci_stack.remote_device_db->delete_link_key(&addr); 532 break; 533 534 #ifndef EMBEDDED 535 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 536 if (!hci_stack.remote_device_db) break; 537 if (packet[2]) break; // status not ok 538 bt_flip_addr(addr, &packet[3]); 539 // fix for invalid remote names - terminate on 0xff 540 for (i=0; i<248;i++){ 541 if (packet[9+i] == 0xff){ 542 packet[9+i] = 0; 543 break; 544 } 545 } 546 memset(&device_name, 0, sizeof(device_name_t)); 547 strncpy((char*) device_name, (char*) &packet[9], 248); 548 hci_stack.remote_device_db->put_name(&addr, &device_name); 549 break; 550 551 case HCI_EVENT_INQUIRY_RESULT: 552 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 553 if (!hci_stack.remote_device_db) break; 554 // first send inq result packet 555 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 556 // then send cached remote names 557 for (i=0; i<packet[2];i++){ 558 bt_flip_addr(addr, &packet[3+i*6]); 559 if (hci_stack.remote_device_db->get_name(&addr, &device_name)){ 560 hci_emit_remote_name_cached(&addr, &device_name); 561 } 562 } 563 return; 564 #endif 565 566 case HCI_EVENT_DISCONNECTION_COMPLETE: 567 if (!packet[2]){ 568 handle = READ_BT_16(packet, 3); 569 hci_connection_t * conn = connection_for_handle(handle); 570 if (conn) { 571 hci_shutdown_connection(conn); 572 } 573 } 574 break; 575 576 case HCI_EVENT_HARDWARE_ERROR: 577 if(hci_stack.control->hw_error){ 578 (*hci_stack.control->hw_error)(); 579 } 580 break; 581 582 #ifdef HAVE_BLE 583 case HCI_EVENT_LE_META: 584 switch (packet[2]) { 585 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 586 // Connection management 587 bt_flip_addr(addr, &packet[8]); 588 log_info("LE Connection_complete (status=%u) %s\n", packet[3], bd_addr_to_str(addr)); 589 // LE connections are auto-accepted, so just create a connection if there isn't one already 590 conn = connection_for_address(addr); 591 if (packet[3]){ 592 if (conn){ 593 // outgoing connection failed, remove entry 594 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 595 btstack_memory_hci_connection_free( conn ); 596 597 } 598 // if authentication error, also delete link key 599 if (packet[3] == 0x05) { 600 hci_drop_link_key_for_bd_addr(&addr); 601 } 602 break; 603 } 604 if (!conn){ 605 conn = create_connection_for_addr(addr); 606 } 607 if (!conn){ 608 // no memory 609 break; 610 } 611 612 conn->state = OPEN; 613 conn->con_handle = READ_BT_16(packet, 4); 614 615 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 616 617 // restart timer 618 // run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 619 // run_loop_add_timer(&conn->timeout); 620 621 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 622 623 hci_emit_nr_connections_changed(); 624 break; 625 626 default: 627 break; 628 } 629 break; 630 #endif 631 632 default: 633 break; 634 } 635 636 // handle BT initialization 637 if (hci_stack.state == HCI_STATE_INITIALIZING){ 638 // handle H4 synchronization loss on restart 639 // if (hci_stack.substate == 1 && packet[0] == HCI_EVENT_HARDWARE_ERROR){ 640 // hci_stack.substate = 0; 641 // } 642 // handle normal init sequence 643 if (hci_stack.substate % 2){ 644 // odd: waiting for event 645 if (packet[0] == HCI_EVENT_COMMAND_COMPLETE){ 646 hci_stack.substate++; 647 } 648 } 649 } 650 651 // help with BT sleep 652 if (hci_stack.state == HCI_STATE_FALLING_ASLEEP 653 && hci_stack.substate == 1 654 && COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 655 hci_stack.substate++; 656 } 657 658 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 659 660 // execute main loop 661 hci_run(); 662 } 663 664 void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 665 switch (packet_type) { 666 case HCI_EVENT_PACKET: 667 event_handler(packet, size); 668 break; 669 case HCI_ACL_DATA_PACKET: 670 acl_handler(packet, size); 671 break; 672 default: 673 break; 674 } 675 } 676 677 /** Register HCI packet handlers */ 678 void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){ 679 hci_stack.packet_handler = handler; 680 } 681 682 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t * remote_device_db){ 683 684 // reference to use transport layer implementation 685 hci_stack.hci_transport = transport; 686 687 // references to used control implementation 688 hci_stack.control = control; 689 690 // reference to used config 691 hci_stack.config = config; 692 693 // no connections yet 694 hci_stack.connections = NULL; 695 hci_stack.discoverable = 0; 696 hci_stack.connectable = 0; 697 698 // no pending cmds 699 hci_stack.decline_reason = 0; 700 hci_stack.new_scan_enable_value = 0xff; 701 702 // higher level handler 703 hci_stack.packet_handler = dummy_handler; 704 705 // store and open remote device db 706 hci_stack.remote_device_db = remote_device_db; 707 if (hci_stack.remote_device_db) { 708 hci_stack.remote_device_db->open(); 709 } 710 711 // max acl payload size defined in config.h 712 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 713 714 // register packet handlers with transport 715 transport->register_packet_handler(&packet_handler); 716 717 hci_stack.state = HCI_STATE_OFF; 718 } 719 720 void hci_close(){ 721 // close remote device db 722 if (hci_stack.remote_device_db) { 723 hci_stack.remote_device_db->close(); 724 } 725 while (hci_stack.connections) { 726 hci_shutdown_connection((hci_connection_t *) hci_stack.connections); 727 } 728 hci_power_control(HCI_POWER_OFF); 729 } 730 731 // State-Module-Driver overview 732 // state module low-level 733 // HCI_STATE_OFF off close 734 // HCI_STATE_INITIALIZING, on open 735 // HCI_STATE_WORKING, on open 736 // HCI_STATE_HALTING, on open 737 // HCI_STATE_SLEEPING, off/sleep close 738 // HCI_STATE_FALLING_ASLEEP on open 739 740 static int hci_power_control_on(void){ 741 742 // power on 743 int err = 0; 744 if (hci_stack.control && hci_stack.control->on){ 745 err = (*hci_stack.control->on)(hci_stack.config); 746 } 747 if (err){ 748 log_error( "POWER_ON failed\n"); 749 hci_emit_hci_open_failed(); 750 return err; 751 } 752 753 // open low-level device 754 err = hci_stack.hci_transport->open(hci_stack.config); 755 if (err){ 756 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 757 if (hci_stack.control && hci_stack.control->off){ 758 (*hci_stack.control->off)(hci_stack.config); 759 } 760 hci_emit_hci_open_failed(); 761 return err; 762 } 763 return 0; 764 } 765 766 static void hci_power_control_off(void){ 767 768 log_info("hci_power_control_off\n"); 769 770 // close low-level device 771 hci_stack.hci_transport->close(hci_stack.config); 772 773 log_info("hci_power_control_off - hci_transport closed\n"); 774 775 // power off 776 if (hci_stack.control && hci_stack.control->off){ 777 (*hci_stack.control->off)(hci_stack.config); 778 } 779 780 log_info("hci_power_control_off - control closed\n"); 781 782 hci_stack.state = HCI_STATE_OFF; 783 } 784 785 static void hci_power_control_sleep(void){ 786 787 log_info("hci_power_control_sleep\n"); 788 789 #if 0 790 // don't close serial port during sleep 791 792 // close low-level device 793 hci_stack.hci_transport->close(hci_stack.config); 794 #endif 795 796 // sleep mode 797 if (hci_stack.control && hci_stack.control->sleep){ 798 (*hci_stack.control->sleep)(hci_stack.config); 799 } 800 801 hci_stack.state = HCI_STATE_SLEEPING; 802 } 803 804 static int hci_power_control_wake(void){ 805 806 log_info("hci_power_control_wake\n"); 807 808 // wake on 809 if (hci_stack.control && hci_stack.control->wake){ 810 (*hci_stack.control->wake)(hci_stack.config); 811 } 812 813 #if 0 814 // open low-level device 815 int err = hci_stack.hci_transport->open(hci_stack.config); 816 if (err){ 817 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 818 if (hci_stack.control && hci_stack.control->off){ 819 (*hci_stack.control->off)(hci_stack.config); 820 } 821 hci_emit_hci_open_failed(); 822 return err; 823 } 824 #endif 825 826 return 0; 827 } 828 829 830 int hci_power_control(HCI_POWER_MODE power_mode){ 831 832 log_info("hci_power_control: %u, current mode %u\n", power_mode, hci_stack.state); 833 834 int err = 0; 835 switch (hci_stack.state){ 836 837 case HCI_STATE_OFF: 838 switch (power_mode){ 839 case HCI_POWER_ON: 840 err = hci_power_control_on(); 841 if (err) return err; 842 // set up state machine 843 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 844 hci_stack.state = HCI_STATE_INITIALIZING; 845 hci_stack.substate = 0; 846 break; 847 case HCI_POWER_OFF: 848 // do nothing 849 break; 850 case HCI_POWER_SLEEP: 851 // do nothing (with SLEEP == OFF) 852 break; 853 } 854 break; 855 856 case HCI_STATE_INITIALIZING: 857 switch (power_mode){ 858 case HCI_POWER_ON: 859 // do nothing 860 break; 861 case HCI_POWER_OFF: 862 // no connections yet, just turn it off 863 hci_power_control_off(); 864 break; 865 case HCI_POWER_SLEEP: 866 // no connections yet, just turn it off 867 hci_power_control_sleep(); 868 break; 869 } 870 break; 871 872 case HCI_STATE_WORKING: 873 switch (power_mode){ 874 case HCI_POWER_ON: 875 // do nothing 876 break; 877 case HCI_POWER_OFF: 878 // see hci_run 879 hci_stack.state = HCI_STATE_HALTING; 880 break; 881 case HCI_POWER_SLEEP: 882 // see hci_run 883 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 884 hci_stack.substate = 0; 885 break; 886 } 887 break; 888 889 case HCI_STATE_HALTING: 890 switch (power_mode){ 891 case HCI_POWER_ON: 892 // set up state machine 893 hci_stack.state = HCI_STATE_INITIALIZING; 894 hci_stack.substate = 0; 895 break; 896 case HCI_POWER_OFF: 897 // do nothing 898 break; 899 case HCI_POWER_SLEEP: 900 // see hci_run 901 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 902 hci_stack.substate = 0; 903 break; 904 } 905 break; 906 907 case HCI_STATE_FALLING_ASLEEP: 908 switch (power_mode){ 909 case HCI_POWER_ON: 910 911 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 912 // nothing to do, if H4 supports power management 913 if (bt_control_iphone_power_management_enabled()){ 914 hci_stack.state = HCI_STATE_INITIALIZING; 915 hci_stack.substate = 6; 916 break; 917 } 918 #endif 919 // set up state machine 920 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 921 hci_stack.state = HCI_STATE_INITIALIZING; 922 hci_stack.substate = 0; 923 break; 924 case HCI_POWER_OFF: 925 // see hci_run 926 hci_stack.state = HCI_STATE_HALTING; 927 break; 928 case HCI_POWER_SLEEP: 929 // do nothing 930 break; 931 } 932 break; 933 934 case HCI_STATE_SLEEPING: 935 switch (power_mode){ 936 case HCI_POWER_ON: 937 938 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 939 // nothing to do, if H4 supports power management 940 if (bt_control_iphone_power_management_enabled()){ 941 hci_stack.state = HCI_STATE_INITIALIZING; 942 hci_stack.substate = 6; 943 hci_update_scan_enable(); 944 break; 945 } 946 #endif 947 err = hci_power_control_wake(); 948 if (err) return err; 949 // set up state machine 950 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 951 hci_stack.state = HCI_STATE_INITIALIZING; 952 hci_stack.substate = 0; 953 break; 954 case HCI_POWER_OFF: 955 hci_stack.state = HCI_STATE_HALTING; 956 break; 957 case HCI_POWER_SLEEP: 958 // do nothing 959 break; 960 } 961 break; 962 } 963 964 // create internal event 965 hci_emit_state(); 966 967 // trigger next/first action 968 hci_run(); 969 970 return 0; 971 } 972 973 static void hci_update_scan_enable(void){ 974 // 2 = page scan, 1 = inq scan 975 hci_stack.new_scan_enable_value = hci_stack.connectable << 1 | hci_stack.discoverable; 976 hci_run(); 977 } 978 979 void hci_discoverable_control(uint8_t enable){ 980 if (enable) enable = 1; // normalize argument 981 982 if (hci_stack.discoverable == enable){ 983 hci_emit_discoverable_enabled(hci_stack.discoverable); 984 return; 985 } 986 987 hci_stack.discoverable = enable; 988 hci_update_scan_enable(); 989 } 990 991 void hci_connectable_control(uint8_t enable){ 992 if (enable) enable = 1; // normalize argument 993 994 // don't emit event 995 if (hci_stack.connectable == enable) return; 996 997 hci_stack.connectable = enable; 998 hci_update_scan_enable(); 999 } 1000 1001 void hci_run(){ 1002 1003 hci_connection_t * connection; 1004 linked_item_t * it; 1005 1006 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1007 1008 // global/non-connection oriented commands 1009 1010 // decline incoming connections 1011 if (hci_stack.decline_reason){ 1012 uint8_t reason = hci_stack.decline_reason; 1013 hci_stack.decline_reason = 0; 1014 hci_send_cmd(&hci_reject_connection_request, hci_stack.decline_addr, reason); 1015 } 1016 1017 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1018 1019 // send scan enable 1020 if (hci_stack.new_scan_enable_value != 0xff){ 1021 hci_send_cmd(&hci_write_scan_enable, hci_stack.new_scan_enable_value); 1022 hci_stack.new_scan_enable_value = 0xff; 1023 } 1024 1025 // send pending HCI commands 1026 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 1027 1028 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1029 1030 connection = (hci_connection_t *) it; 1031 1032 if (connection->state == RECEIVED_CONNECTION_REQUEST){ 1033 log_info("sending hci_accept_connection_request\n"); 1034 hci_send_cmd(&hci_accept_connection_request, connection->address, 1); 1035 connection->state = ACCEPTED_CONNECTION_REQUEST; 1036 } 1037 1038 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1039 1040 if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){ 1041 link_key_t link_key; 1042 log_info("responding to link key request\n"); 1043 if ( hci_stack.remote_device_db->get_link_key( &connection->address, &link_key)){ 1044 hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key); 1045 } else { 1046 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 1047 } 1048 connection->authentication_flags &= ~HANDLE_LINK_KEY_REQUEST; 1049 } 1050 } 1051 1052 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1053 1054 switch (hci_stack.state){ 1055 case HCI_STATE_INITIALIZING: 1056 // log_info("hci_init: substate %u\n", hci_stack.substate); 1057 if (hci_stack.substate % 2) { 1058 // odd: waiting for command completion 1059 return; 1060 } 1061 switch (hci_stack.substate >> 1){ 1062 case 0: // RESET 1063 hci_send_cmd(&hci_reset); 1064 if (hci_stack.config == 0 || ((hci_uart_config_t *)hci_stack.config)->baudrate_main == 0){ 1065 // skip baud change 1066 hci_stack.substate = 4; // >> 1 = 2 1067 } 1068 break; 1069 case 1: // SEND BAUD CHANGE 1070 hci_stack.control->baudrate_cmd(hci_stack.config, ((hci_uart_config_t *)hci_stack.config)->baudrate_main, hci_stack.hci_packet_buffer); 1071 hci_send_cmd_packet(hci_stack.hci_packet_buffer, 3 + hci_stack.hci_packet_buffer[2]); 1072 break; 1073 case 2: // LOCAL BAUD CHANGE 1074 hci_stack.hci_transport->set_baudrate(((hci_uart_config_t *)hci_stack.config)->baudrate_main); 1075 hci_stack.substate += 2; 1076 // break missing here for fall through 1077 1078 case 3: 1079 // custom initialization 1080 if (hci_stack.control && hci_stack.control->next_cmd){ 1081 int valid_cmd = (*hci_stack.control->next_cmd)(hci_stack.config, hci_stack.hci_packet_buffer); 1082 if (valid_cmd){ 1083 int size = 3 + hci_stack.hci_packet_buffer[2]; 1084 hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack.hci_packet_buffer, size); 1085 hci_stack.substate = 4; // more init commands 1086 break; 1087 } 1088 log_info("hci_run: init script done\n\r"); 1089 } 1090 // otherwise continue 1091 hci_send_cmd(&hci_read_bd_addr); 1092 break; 1093 case 4: 1094 hci_send_cmd(&hci_read_buffer_size); 1095 break; 1096 case 5: 1097 // ca. 15 sec 1098 hci_send_cmd(&hci_write_page_timeout, 0x6000); 1099 break; 1100 case 6: 1101 hci_send_cmd(&hci_write_scan_enable, (hci_stack.connectable << 1) | hci_stack.discoverable); // page scan 1102 break; 1103 case 7: 1104 #ifndef EMBEDDED 1105 { 1106 char hostname[30]; 1107 gethostname(hostname, 30); 1108 hostname[29] = '\0'; 1109 hci_send_cmd(&hci_write_local_name, hostname); 1110 break; 1111 } 1112 case 8: 1113 #ifdef USE_BLUETOOL 1114 hci_send_cmd(&hci_write_class_of_device, 0x007a020c); // Smartphone 1115 break; 1116 1117 case 9: 1118 #endif 1119 #endif 1120 // done. 1121 hci_stack.state = HCI_STATE_WORKING; 1122 hci_emit_state(); 1123 break; 1124 default: 1125 break; 1126 } 1127 hci_stack.substate++; 1128 break; 1129 1130 case HCI_STATE_HALTING: 1131 1132 log_info("HCI_STATE_HALTING\n"); 1133 // close all open connections 1134 connection = (hci_connection_t *) hci_stack.connections; 1135 if (connection){ 1136 1137 // send disconnect 1138 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1139 1140 log_info("HCI_STATE_HALTING, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1141 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1142 1143 // send disconnected event right away - causes higher layer connections to get closed, too. 1144 hci_shutdown_connection(connection); 1145 return; 1146 } 1147 log_info("HCI_STATE_HALTING, calling off\n"); 1148 1149 // switch mode 1150 hci_power_control_off(); 1151 1152 log_info("HCI_STATE_HALTING, emitting state\n"); 1153 hci_emit_state(); 1154 log_info("HCI_STATE_HALTING, done\n"); 1155 break; 1156 1157 case HCI_STATE_FALLING_ASLEEP: 1158 switch(hci_stack.substate) { 1159 case 0: 1160 log_info("HCI_STATE_FALLING_ASLEEP\n"); 1161 // close all open connections 1162 connection = (hci_connection_t *) hci_stack.connections; 1163 1164 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1165 // don't close connections, if H4 supports power management 1166 if (bt_control_iphone_power_management_enabled()){ 1167 connection = NULL; 1168 } 1169 #endif 1170 if (connection){ 1171 1172 // send disconnect 1173 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1174 1175 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1176 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1177 1178 // send disconnected event right away - causes higher layer connections to get closed, too. 1179 hci_shutdown_connection(connection); 1180 return; 1181 } 1182 1183 // disable page and inquiry scan 1184 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1185 1186 log_info("HCI_STATE_HALTING, disabling inq cans\n"); 1187 hci_send_cmd(&hci_write_scan_enable, hci_stack.connectable << 1); // drop inquiry scan but keep page scan 1188 1189 // continue in next sub state 1190 hci_stack.substate++; 1191 break; 1192 case 1: 1193 // wait for command complete "hci_write_scan_enable" in event_handler(); 1194 break; 1195 case 2: 1196 log_info("HCI_STATE_HALTING, calling sleep\n"); 1197 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1198 // don't actually go to sleep, if H4 supports power management 1199 if (bt_control_iphone_power_management_enabled()){ 1200 // SLEEP MODE reached 1201 hci_stack.state = HCI_STATE_SLEEPING; 1202 hci_emit_state(); 1203 break; 1204 } 1205 #endif 1206 // switch mode 1207 hci_power_control_sleep(); // changes hci_stack.state to SLEEP 1208 hci_emit_state(); 1209 break; 1210 1211 default: 1212 break; 1213 } 1214 break; 1215 1216 default: 1217 break; 1218 } 1219 } 1220 1221 int hci_send_cmd_packet(uint8_t *packet, int size){ 1222 bd_addr_t addr; 1223 hci_connection_t * conn; 1224 // house-keeping 1225 1226 // create_connection? 1227 if (IS_COMMAND(packet, hci_create_connection)){ 1228 bt_flip_addr(addr, &packet[3]); 1229 log_info("Create_connection to %s\n", bd_addr_to_str(addr)); 1230 conn = connection_for_address(addr); 1231 if (conn) { 1232 // if connection exists 1233 if (conn->state == OPEN) { 1234 // and OPEN, emit connection complete command 1235 hci_emit_connection_complete(conn, 0); 1236 } 1237 // otherwise, just ignore as it is already in the open process 1238 return 0; // don't sent packet to controller 1239 1240 } 1241 // create connection struct and register, state = SENT_CREATE_CONNECTION 1242 conn = create_connection_for_addr(addr); 1243 if (!conn){ 1244 // notify client that alloc failed 1245 hci_emit_connection_complete(conn, BTSTACK_MEMORY_ALLOC_FAILED); 1246 return 0; // don't sent packet to controller 1247 } 1248 conn->state = SENT_CREATE_CONNECTION; 1249 } 1250 1251 if (IS_COMMAND(packet, hci_link_key_request_reply)){ 1252 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY); 1253 } 1254 if (IS_COMMAND(packet, hci_link_key_request_negative_reply)){ 1255 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST); 1256 } 1257 if (IS_COMMAND(packet, hci_pin_code_request_reply)){ 1258 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_REPLY); 1259 } 1260 if (IS_COMMAND(packet, hci_pin_code_request_negative_reply)){ 1261 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_NEGATIVE_REPLY); 1262 } 1263 1264 if (IS_COMMAND(packet, hci_delete_stored_link_key)){ 1265 if (hci_stack.remote_device_db){ 1266 bt_flip_addr(addr, &packet[3]); 1267 hci_stack.remote_device_db->delete_link_key(&addr); 1268 } 1269 } 1270 1271 hci_stack.num_cmd_packets--; 1272 return hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 1273 } 1274 1275 /** 1276 * pre: numcmds >= 0 - it's allowed to send a command to the controller 1277 */ 1278 int hci_send_cmd(const hci_cmd_t *cmd, ...){ 1279 va_list argptr; 1280 va_start(argptr, cmd); 1281 uint16_t size = hci_create_cmd_internal(hci_stack.hci_packet_buffer, cmd, argptr); 1282 va_end(argptr); 1283 return hci_send_cmd_packet(hci_stack.hci_packet_buffer, size); 1284 } 1285 1286 // Create various non-HCI events. 1287 // TODO: generalize, use table similar to hci_create_command 1288 1289 void hci_emit_state(){ 1290 uint8_t event[3]; 1291 event[0] = BTSTACK_EVENT_STATE; 1292 event[1] = sizeof(event) - 2; 1293 event[2] = hci_stack.state; 1294 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1295 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1296 } 1297 1298 void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status){ 1299 uint8_t event[13]; 1300 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 1301 event[1] = sizeof(event) - 2; 1302 event[2] = status; 1303 bt_store_16(event, 3, conn->con_handle); 1304 bt_flip_addr(&event[5], conn->address); 1305 event[11] = 1; // ACL connection 1306 event[12] = 0; // encryption disabled 1307 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1308 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1309 } 1310 1311 void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason){ 1312 uint8_t event[6]; 1313 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 1314 event[1] = sizeof(event) - 2; 1315 event[2] = 0; // status = OK 1316 bt_store_16(event, 3, handle); 1317 event[5] = reason; 1318 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1319 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1320 } 1321 1322 void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 1323 uint8_t event[4]; 1324 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 1325 event[1] = sizeof(event) - 2; 1326 bt_store_16(event, 2, conn->con_handle); 1327 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1328 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1329 } 1330 1331 void hci_emit_nr_connections_changed(){ 1332 uint8_t event[3]; 1333 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 1334 event[1] = sizeof(event) - 2; 1335 event[2] = nr_hci_connections(); 1336 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1337 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1338 } 1339 1340 void hci_emit_hci_open_failed(){ 1341 uint8_t event[2]; 1342 event[0] = BTSTACK_EVENT_POWERON_FAILED; 1343 event[1] = sizeof(event) - 2; 1344 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1345 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1346 } 1347 1348 #ifndef EMBEDDED 1349 void hci_emit_btstack_version() { 1350 uint8_t event[6]; 1351 event[0] = BTSTACK_EVENT_VERSION; 1352 event[1] = sizeof(event) - 2; 1353 event[2] = BTSTACK_MAJOR; 1354 event[3] = BTSTACK_MINOR; 1355 bt_store_16(event, 4, BTSTACK_REVISION); 1356 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1357 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1358 } 1359 #endif 1360 1361 void hci_emit_system_bluetooth_enabled(uint8_t enabled){ 1362 uint8_t event[3]; 1363 event[0] = BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED; 1364 event[1] = sizeof(event) - 2; 1365 event[2] = enabled; 1366 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1367 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1368 } 1369 1370 void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name){ 1371 uint8_t event[2+1+6+248]; 1372 event[0] = BTSTACK_EVENT_REMOTE_NAME_CACHED; 1373 event[1] = sizeof(event) - 2; 1374 event[2] = 0; // just to be compatible with HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 1375 bt_flip_addr(&event[3], *addr); 1376 memcpy(&event[9], name, 248); 1377 hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event)); 1378 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1379 } 1380 1381 void hci_emit_discoverable_enabled(uint8_t enabled){ 1382 uint8_t event[3]; 1383 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 1384 event[1] = sizeof(event) - 2; 1385 event[2] = enabled; 1386 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1387 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1388 } 1389