1 /* 2 * Copyright (C) 2009-2012 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 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at [email protected] 34 * 35 */ 36 37 /* 38 * hci.c 39 * 40 * Created by Matthias Ringwald on 4/29/09. 41 * 42 */ 43 44 #include "config.h" 45 46 #include "hci.h" 47 48 #include <stdarg.h> 49 #include <string.h> 50 #include <stdio.h> 51 52 #ifndef EMBEDDED 53 #include <unistd.h> // gethostbyname 54 #include <btstack/version.h> 55 #endif 56 57 #include "btstack_memory.h" 58 #include "debug.h" 59 #include "hci_dump.h" 60 61 #include <btstack/hci_cmds.h> 62 63 #define HCI_CONNECTION_TIMEOUT_MS 10000 64 65 #define HCI_INTIALIZING_SUBSTATE_AFTER_SLEEP 6 66 67 #ifdef USE_BLUETOOL 68 #include "bt_control_iphone.h" 69 #endif 70 71 static void hci_update_scan_enable(void); 72 73 // the STACK is here 74 static hci_stack_t hci_stack; 75 76 /** 77 * get connection for a given handle 78 * 79 * @return connection OR NULL, if not found 80 */ 81 hci_connection_t * connection_for_handle(hci_con_handle_t con_handle){ 82 linked_item_t *it; 83 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 84 if ( ((hci_connection_t *) it)->con_handle == con_handle){ 85 return (hci_connection_t *) it; 86 } 87 } 88 return NULL; 89 } 90 91 static void hci_connection_timeout_handler(timer_source_t *timer){ 92 hci_connection_t * connection = (hci_connection_t *) linked_item_get_user(&timer->item); 93 #ifdef HAVE_TIME 94 struct timeval tv; 95 gettimeofday(&tv, NULL); 96 if (tv.tv_sec >= connection->timestamp.tv_sec + HCI_CONNECTION_TIMEOUT_MS/1000) { 97 // connections might be timed out 98 hci_emit_l2cap_check_timeout(connection); 99 } 100 #endif 101 #ifdef HAVE_TICK 102 if (embedded_get_ticks() > connection->timestamp + embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 103 // connections might be timed out 104 hci_emit_l2cap_check_timeout(connection); 105 } 106 #endif 107 run_loop_set_timer(timer, HCI_CONNECTION_TIMEOUT_MS); 108 run_loop_add_timer(timer); 109 } 110 111 static void hci_connection_timestamp(hci_connection_t *connection){ 112 #ifdef HAVE_TIME 113 gettimeofday(&connection->timestamp, NULL); 114 #endif 115 #ifdef HAVE_TICK 116 connection->timestamp = embedded_get_ticks(); 117 #endif 118 } 119 120 /** 121 * create connection for given address 122 * 123 * @return connection OR NULL, if no memory left 124 */ 125 static hci_connection_t * create_connection_for_addr(bd_addr_t addr){ 126 hci_connection_t * conn = (hci_connection_t *) btstack_memory_hci_connection_get(); 127 if (!conn) return NULL; 128 BD_ADDR_COPY(conn->address, addr); 129 conn->con_handle = 0xffff; 130 conn->authentication_flags = AUTH_FLAGS_NONE; 131 linked_item_set_user(&conn->timeout.item, conn); 132 conn->timeout.process = hci_connection_timeout_handler; 133 hci_connection_timestamp(conn); 134 conn->acl_recombination_length = 0; 135 conn->acl_recombination_pos = 0; 136 conn->num_acl_packets_sent = 0; 137 linked_list_add(&hci_stack.connections, (linked_item_t *) conn); 138 return conn; 139 } 140 141 /** 142 * get connection for given address 143 * 144 * @return connection OR NULL, if not found 145 */ 146 static hci_connection_t * connection_for_address(bd_addr_t address){ 147 linked_item_t *it; 148 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 149 if ( ! BD_ADDR_CMP( ((hci_connection_t *) it)->address, address) ){ 150 return (hci_connection_t *) it; 151 } 152 } 153 return NULL; 154 } 155 156 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 157 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 158 } 159 160 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 161 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 162 } 163 164 165 /** 166 * add authentication flags and reset timer 167 */ 168 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 169 bd_addr_t addr; 170 bt_flip_addr(addr, *(bd_addr_t *) bd_addr); 171 hci_connection_t * conn = connection_for_address(addr); 172 if (conn) { 173 connectionSetAuthenticationFlags(conn, flags); 174 hci_connection_timestamp(conn); 175 } 176 } 177 178 int hci_authentication_active_for_handle(hci_con_handle_t handle){ 179 hci_connection_t * conn = connection_for_handle(handle); 180 if (!conn) return 0; 181 if (!conn->authentication_flags) return 0; 182 if (conn->authentication_flags & SENT_LINK_KEY_REPLY) return 0; 183 if (conn->authentication_flags & RECV_LINK_KEY_NOTIFICATION) return 0; 184 return 1; 185 } 186 187 void hci_drop_link_key_for_bd_addr(bd_addr_t *addr){ 188 if (hci_stack.remote_device_db) { 189 hci_stack.remote_device_db->delete_link_key(addr); 190 } 191 } 192 193 194 /** 195 * count connections 196 */ 197 static int nr_hci_connections(void){ 198 int count = 0; 199 linked_item_t *it; 200 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next, count++); 201 return count; 202 } 203 204 /** 205 * Dummy handler called by HCI 206 */ 207 static void dummy_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 208 } 209 210 uint8_t hci_number_outgoing_packets(hci_con_handle_t handle){ 211 hci_connection_t * connection = connection_for_handle(handle); 212 if (!connection) { 213 log_error("hci_number_outgoing_packets connectino for handle %u does not exist!\n", handle); 214 return 0; 215 } 216 return connection->num_acl_packets_sent; 217 } 218 219 uint8_t hci_number_free_acl_slots(){ 220 uint8_t free_slots = hci_stack.total_num_acl_packets; 221 linked_item_t *it; 222 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 223 hci_connection_t * connection = (hci_connection_t *) it; 224 if (free_slots < connection->num_acl_packets_sent) { 225 log_error("hci_number_free_acl_slots: sum of outgoing packets > total acl packets!\n"); 226 return 0; 227 } 228 free_slots -= connection->num_acl_packets_sent; 229 } 230 return free_slots; 231 } 232 233 int hci_can_send_packet_now(uint8_t packet_type){ 234 235 // check for async hci transport implementations 236 if (hci_stack.hci_transport->can_send_packet_now){ 237 if (!hci_stack.hci_transport->can_send_packet_now(packet_type)){ 238 return 0; 239 } 240 } 241 242 // check regular Bluetooth flow control 243 switch (packet_type) { 244 case HCI_ACL_DATA_PACKET: 245 return hci_number_free_acl_slots(); 246 case HCI_COMMAND_DATA_PACKET: 247 return hci_stack.num_cmd_packets; 248 default: 249 return 0; 250 } 251 } 252 253 int hci_send_acl_packet(uint8_t *packet, int size){ 254 255 // check for free places on BT module 256 if (!hci_number_free_acl_slots()) return BTSTACK_ACL_BUFFERS_FULL; 257 258 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 259 hci_connection_t *connection = connection_for_handle( con_handle); 260 if (!connection) return 0; 261 hci_connection_timestamp(connection); 262 263 // count packet 264 connection->num_acl_packets_sent++; 265 // log_info("hci_send_acl_packet - handle %u, sent %u\n", connection->con_handle, connection->num_acl_packets_sent); 266 267 // send packet 268 int err = hci_stack.hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 269 270 return err; 271 } 272 273 static void acl_handler(uint8_t *packet, int size){ 274 275 // get info 276 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 277 hci_connection_t *conn = connection_for_handle(con_handle); 278 uint8_t acl_flags = READ_ACL_FLAGS(packet); 279 uint16_t acl_length = READ_ACL_LENGTH(packet); 280 281 // ignore non-registered handle 282 if (!conn){ 283 log_error( "hci.c: acl_handler called with non-registered handle %u!\n" , con_handle); 284 return; 285 } 286 287 // update idle timestamp 288 hci_connection_timestamp(conn); 289 290 // handle different packet types 291 switch (acl_flags & 0x03) { 292 293 case 0x01: // continuation fragment 294 295 // sanity check 296 if (conn->acl_recombination_pos == 0) { 297 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x\n", con_handle); 298 return; 299 } 300 301 // append fragment payload (header already stored) 302 memcpy(&conn->acl_recombination_buffer[conn->acl_recombination_pos], &packet[4], acl_length ); 303 conn->acl_recombination_pos += acl_length; 304 305 // log_error( "ACL Cont Fragment: acl_len %u, combined_len %u, l2cap_len %u\n", acl_length, 306 // conn->acl_recombination_pos, conn->acl_recombination_length); 307 308 // forward complete L2CAP packet if complete. 309 if (conn->acl_recombination_pos >= conn->acl_recombination_length + 4 + 4){ // pos already incl. ACL header 310 311 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, conn->acl_recombination_buffer, conn->acl_recombination_pos); 312 // reset recombination buffer 313 conn->acl_recombination_length = 0; 314 conn->acl_recombination_pos = 0; 315 } 316 break; 317 318 case 0x02: { // first fragment 319 320 // sanity check 321 if (conn->acl_recombination_pos) { 322 log_error( "ACL First Fragment but data in buffer for handle 0x%02x\n", con_handle); 323 return; 324 } 325 326 // peek into L2CAP packet! 327 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 328 329 // log_error( "ACL First Fragment: acl_len %u, l2cap_len %u\n", acl_length, l2cap_length); 330 331 // compare fragment size to L2CAP packet size 332 if (acl_length >= l2cap_length + 4){ 333 334 // forward fragment as L2CAP packet 335 hci_stack.packet_handler(HCI_ACL_DATA_PACKET, packet, acl_length + 4); 336 337 } else { 338 // store first fragment and tweak acl length for complete package 339 memcpy(conn->acl_recombination_buffer, packet, acl_length + 4); 340 conn->acl_recombination_pos = acl_length + 4; 341 conn->acl_recombination_length = l2cap_length; 342 bt_store_16(conn->acl_recombination_buffer, 2, l2cap_length +4); 343 } 344 break; 345 346 } 347 default: 348 log_error( "hci.c: acl_handler called with invalid packet boundary flags %u\n", acl_flags & 0x03); 349 return; 350 } 351 352 // execute main loop 353 hci_run(); 354 } 355 356 static void hci_shutdown_connection(hci_connection_t *conn){ 357 log_info("Connection closed: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 358 359 // cancel all l2cap connections 360 hci_emit_disconnection_complete(conn->con_handle, 0x16); // terminated by local host 361 362 run_loop_remove_timer(&conn->timeout); 363 364 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 365 btstack_memory_hci_connection_free( conn ); 366 367 // now it's gone 368 hci_emit_nr_connections_changed(); 369 } 370 371 static const uint16_t packet_type_sizes[] = { 372 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 373 HCI_ACL_DH1_SIZE, 0, 0, 0, 374 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 375 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 376 }; 377 378 static uint16_t hci_acl_packet_types_for_buffer_size(uint16_t buffer_size){ 379 uint16_t packet_types = 0; 380 int i; 381 for (i=0;i<16;i++){ 382 if (packet_type_sizes[i] == 0) continue; 383 if (packet_type_sizes[i] <= buffer_size){ 384 packet_types |= 1 << i; 385 } 386 } 387 // flip bits for "may not be used" 388 packet_types ^= 0x3306; 389 return packet_types; 390 } 391 392 uint16_t hci_usable_acl_packet_types(void){ 393 return hci_stack.packet_types; 394 } 395 396 uint8_t* hci_get_outgoing_acl_packet_buffer(void){ 397 // hci packet buffer is >= acl data packet length 398 return hci_stack.hci_packet_buffer; 399 } 400 401 uint16_t hci_max_acl_data_packet_length(){ 402 return hci_stack.acl_data_packet_length; 403 } 404 405 // avoid huge local variables 406 #ifndef EMBEDDED 407 static device_name_t device_name; 408 #endif 409 static void event_handler(uint8_t *packet, int size){ 410 bd_addr_t addr; 411 uint8_t link_type; 412 hci_con_handle_t handle; 413 hci_connection_t * conn; 414 int i; 415 416 // printf("HCI:EVENT:%02x\n", packet[0]); 417 418 switch (packet[0]) { 419 420 case HCI_EVENT_COMMAND_COMPLETE: 421 // get num cmd packets 422 // log_info("HCI_EVENT_COMMAND_COMPLETE cmds old %u - new %u\n", hci_stack.num_cmd_packets, packet[2]); 423 hci_stack.num_cmd_packets = packet[2]; 424 425 if (COMMAND_COMPLETE_EVENT(packet, hci_read_buffer_size)){ 426 // from offset 5 427 // status 428 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 429 hci_stack.acl_data_packet_length = READ_BT_16(packet, 6); 430 // ignore: SCO data packet len (8) 431 hci_stack.total_num_acl_packets = packet[9]; 432 // ignore: total num SCO packets 433 if (hci_stack.state == HCI_STATE_INITIALIZING){ 434 // determine usable ACL payload size 435 if (HCI_ACL_PAYLOAD_SIZE < hci_stack.acl_data_packet_length){ 436 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 437 } 438 // determine usable ACL packet types 439 hci_stack.packet_types = hci_acl_packet_types_for_buffer_size(hci_stack.acl_data_packet_length); 440 441 log_info("hci_read_buffer_size: used size %u, count %u, packet types %04x\n", 442 hci_stack.acl_data_packet_length, hci_stack.total_num_acl_packets, hci_stack.packet_types); 443 } 444 } 445 // Dump local address 446 if (COMMAND_COMPLETE_EVENT(packet, hci_read_bd_addr)) { 447 bd_addr_t addr; 448 bt_flip_addr(addr, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1]); 449 log_info("Local Address, Status: 0x%02x: Addr: %s\n", 450 packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(addr)); 451 } 452 if (COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 453 hci_emit_discoverable_enabled(hci_stack.discoverable); 454 } 455 if (COMMAND_COMPLETE_EVENT(packet, hci_read_local_supported_features)){ 456 memcpy(hci_stack.local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], 8); 457 log_info("Local Supported Features: 0x%02x%02x%02x%02x%02x%02x%02x%02x", 458 hci_stack.local_supported_features[0], hci_stack.local_supported_features[1], 459 hci_stack.local_supported_features[2], hci_stack.local_supported_features[3], 460 hci_stack.local_supported_features[4], hci_stack.local_supported_features[5], 461 hci_stack.local_supported_features[6], hci_stack.local_supported_features[7]); 462 } 463 break; 464 465 case HCI_EVENT_COMMAND_STATUS: 466 // get num cmd packets 467 // log_info("HCI_EVENT_COMMAND_STATUS cmds - old %u - new %u\n", hci_stack.num_cmd_packets, packet[3]); 468 hci_stack.num_cmd_packets = packet[3]; 469 break; 470 471 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS: 472 for (i=0; i<packet[2];i++){ 473 handle = READ_BT_16(packet, 3 + 2*i); 474 uint16_t num_packets = READ_BT_16(packet, 3 + packet[2]*2 + 2*i); 475 conn = connection_for_handle(handle); 476 if (!conn){ 477 log_error("hci_number_completed_packet lists unused con handle %u\n", handle); 478 continue; 479 } 480 conn->num_acl_packets_sent -= num_packets; 481 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u\n", num_packets, handle, conn->num_acl_packets_sent); 482 } 483 break; 484 485 case HCI_EVENT_CONNECTION_REQUEST: 486 bt_flip_addr(addr, &packet[2]); 487 // TODO: eval COD 8-10 488 link_type = packet[11]; 489 log_info("Connection_incoming: %s, type %u\n", bd_addr_to_str(addr), link_type); 490 if (link_type == 1) { // ACL 491 conn = connection_for_address(addr); 492 if (!conn) { 493 conn = create_connection_for_addr(addr); 494 } 495 if (!conn) { 496 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 497 hci_stack.decline_reason = 0x0d; 498 BD_ADDR_COPY(hci_stack.decline_addr, addr); 499 break; 500 } 501 conn->state = RECEIVED_CONNECTION_REQUEST; 502 hci_run(); 503 } else { 504 // SYNCHRONOUS CONNECTION LIMIT TO A DEVICE EXCEEDED (0X0A) 505 hci_stack.decline_reason = 0x0a; 506 BD_ADDR_COPY(hci_stack.decline_addr, addr); 507 } 508 break; 509 510 case HCI_EVENT_CONNECTION_COMPLETE: 511 // Connection management 512 bt_flip_addr(addr, &packet[5]); 513 log_info("Connection_complete (status=%u) %s\n", packet[2], bd_addr_to_str(addr)); 514 conn = connection_for_address(addr); 515 if (conn) { 516 if (!packet[2]){ 517 conn->state = OPEN; 518 conn->con_handle = READ_BT_16(packet, 3); 519 520 // restart timer 521 run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 522 run_loop_add_timer(&conn->timeout); 523 524 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 525 526 hci_emit_nr_connections_changed(); 527 } else { 528 // connection failed, remove entry 529 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 530 btstack_memory_hci_connection_free( conn ); 531 532 // if authentication error, also delete link key 533 if (packet[2] == 0x05) { 534 hci_drop_link_key_for_bd_addr(&addr); 535 } 536 } 537 } 538 break; 539 540 case HCI_EVENT_LINK_KEY_REQUEST: 541 log_info("HCI_EVENT_LINK_KEY_REQUEST\n"); 542 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_REQUEST); 543 if (!hci_stack.remote_device_db) break; 544 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], HANDLE_LINK_KEY_REQUEST); 545 hci_run(); 546 // request handled by hci_run() as HANDLE_LINK_KEY_REQUEST gets set 547 return; 548 549 case HCI_EVENT_LINK_KEY_NOTIFICATION: 550 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_NOTIFICATION); 551 if (!hci_stack.remote_device_db) break; 552 bt_flip_addr(addr, &packet[2]); 553 hci_stack.remote_device_db->put_link_key(&addr, (link_key_t *) &packet[8]); 554 // still forward event to allow dismiss of pairing dialog 555 break; 556 557 case HCI_EVENT_PIN_CODE_REQUEST: 558 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_PIN_CODE_REQUEST); 559 // PIN CODE REQUEST means the link key request didn't succee -> delete stored link key 560 if (!hci_stack.remote_device_db) break; 561 bt_flip_addr(addr, &packet[2]); 562 hci_stack.remote_device_db->delete_link_key(&addr); 563 break; 564 565 #ifndef EMBEDDED 566 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 567 if (!hci_stack.remote_device_db) break; 568 if (packet[2]) break; // status not ok 569 bt_flip_addr(addr, &packet[3]); 570 // fix for invalid remote names - terminate on 0xff 571 for (i=0; i<248;i++){ 572 if (packet[9+i] == 0xff){ 573 packet[9+i] = 0; 574 break; 575 } 576 } 577 memset(&device_name, 0, sizeof(device_name_t)); 578 strncpy((char*) device_name, (char*) &packet[9], 248); 579 hci_stack.remote_device_db->put_name(&addr, &device_name); 580 break; 581 582 case HCI_EVENT_INQUIRY_RESULT: 583 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 584 if (!hci_stack.remote_device_db) break; 585 // first send inq result packet 586 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 587 // then send cached remote names 588 for (i=0; i<packet[2];i++){ 589 bt_flip_addr(addr, &packet[3+i*6]); 590 if (hci_stack.remote_device_db->get_name(&addr, &device_name)){ 591 hci_emit_remote_name_cached(&addr, &device_name); 592 } 593 } 594 return; 595 #endif 596 597 case HCI_EVENT_DISCONNECTION_COMPLETE: 598 if (!packet[2]){ 599 handle = READ_BT_16(packet, 3); 600 hci_connection_t * conn = connection_for_handle(handle); 601 if (conn) { 602 hci_shutdown_connection(conn); 603 } 604 } 605 break; 606 607 case HCI_EVENT_HARDWARE_ERROR: 608 if(hci_stack.control->hw_error){ 609 (*hci_stack.control->hw_error)(); 610 } 611 break; 612 613 #ifdef HAVE_BLE 614 case HCI_EVENT_LE_META: 615 switch (packet[2]) { 616 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 617 // Connection management 618 bt_flip_addr(addr, &packet[8]); 619 log_info("LE Connection_complete (status=%u) %s\n", packet[3], bd_addr_to_str(addr)); 620 // LE connections are auto-accepted, so just create a connection if there isn't one already 621 conn = connection_for_address(addr); 622 if (packet[3]){ 623 if (conn){ 624 // outgoing connection failed, remove entry 625 linked_list_remove(&hci_stack.connections, (linked_item_t *) conn); 626 btstack_memory_hci_connection_free( conn ); 627 628 } 629 // if authentication error, also delete link key 630 if (packet[3] == 0x05) { 631 hci_drop_link_key_for_bd_addr(&addr); 632 } 633 break; 634 } 635 if (!conn){ 636 conn = create_connection_for_addr(addr); 637 } 638 if (!conn){ 639 // no memory 640 break; 641 } 642 643 conn->state = OPEN; 644 conn->con_handle = READ_BT_16(packet, 4); 645 646 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 647 648 // restart timer 649 // run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 650 // run_loop_add_timer(&conn->timeout); 651 652 log_info("New connection: handle %u, %s\n", conn->con_handle, bd_addr_to_str(conn->address)); 653 654 hci_emit_nr_connections_changed(); 655 break; 656 657 default: 658 break; 659 } 660 break; 661 #endif 662 663 default: 664 break; 665 } 666 667 // handle BT initialization 668 if (hci_stack.state == HCI_STATE_INITIALIZING){ 669 // handle H4 synchronization loss on restart 670 // if (hci_stack.substate == 1 && packet[0] == HCI_EVENT_HARDWARE_ERROR){ 671 // hci_stack.substate = 0; 672 // } 673 // handle normal init sequence 674 if (hci_stack.substate % 2){ 675 // odd: waiting for event 676 if (packet[0] == HCI_EVENT_COMMAND_COMPLETE || packet[0] == HCI_EVENT_COMMAND_STATUS){ 677 hci_stack.substate++; 678 } 679 } 680 } 681 682 // help with BT sleep 683 if (hci_stack.state == HCI_STATE_FALLING_ASLEEP 684 && hci_stack.substate == 1 685 && COMMAND_COMPLETE_EVENT(packet, hci_write_scan_enable)){ 686 hci_stack.substate++; 687 } 688 689 hci_stack.packet_handler(HCI_EVENT_PACKET, packet, size); 690 691 // execute main loop 692 hci_run(); 693 } 694 695 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 696 switch (packet_type) { 697 case HCI_EVENT_PACKET: 698 event_handler(packet, size); 699 break; 700 case HCI_ACL_DATA_PACKET: 701 acl_handler(packet, size); 702 break; 703 default: 704 break; 705 } 706 } 707 708 /** Register HCI packet handlers */ 709 void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)){ 710 hci_stack.packet_handler = handler; 711 } 712 713 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t const* remote_device_db){ 714 715 // reference to use transport layer implementation 716 hci_stack.hci_transport = transport; 717 718 // references to used control implementation 719 hci_stack.control = control; 720 721 // reference to used config 722 hci_stack.config = config; 723 724 // no connections yet 725 hci_stack.connections = NULL; 726 hci_stack.discoverable = 0; 727 hci_stack.connectable = 0; 728 729 // no pending cmds 730 hci_stack.decline_reason = 0; 731 hci_stack.new_scan_enable_value = 0xff; 732 733 // higher level handler 734 hci_stack.packet_handler = dummy_handler; 735 736 // store and open remote device db 737 hci_stack.remote_device_db = remote_device_db; 738 if (hci_stack.remote_device_db) { 739 hci_stack.remote_device_db->open(); 740 } 741 742 // max acl payload size defined in config.h 743 hci_stack.acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 744 745 // register packet handlers with transport 746 transport->register_packet_handler(&packet_handler); 747 748 hci_stack.state = HCI_STATE_OFF; 749 } 750 751 void hci_close(){ 752 // close remote device db 753 if (hci_stack.remote_device_db) { 754 hci_stack.remote_device_db->close(); 755 } 756 while (hci_stack.connections) { 757 hci_shutdown_connection((hci_connection_t *) hci_stack.connections); 758 } 759 hci_power_control(HCI_POWER_OFF); 760 } 761 762 // State-Module-Driver overview 763 // state module low-level 764 // HCI_STATE_OFF off close 765 // HCI_STATE_INITIALIZING, on open 766 // HCI_STATE_WORKING, on open 767 // HCI_STATE_HALTING, on open 768 // HCI_STATE_SLEEPING, off/sleep close 769 // HCI_STATE_FALLING_ASLEEP on open 770 771 static int hci_power_control_on(void){ 772 773 // power on 774 int err = 0; 775 if (hci_stack.control && hci_stack.control->on){ 776 err = (*hci_stack.control->on)(hci_stack.config); 777 } 778 if (err){ 779 log_error( "POWER_ON failed\n"); 780 hci_emit_hci_open_failed(); 781 return err; 782 } 783 784 // open low-level device 785 err = hci_stack.hci_transport->open(hci_stack.config); 786 if (err){ 787 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 788 if (hci_stack.control && hci_stack.control->off){ 789 (*hci_stack.control->off)(hci_stack.config); 790 } 791 hci_emit_hci_open_failed(); 792 return err; 793 } 794 return 0; 795 } 796 797 static void hci_power_control_off(void){ 798 799 log_info("hci_power_control_off\n"); 800 801 // close low-level device 802 hci_stack.hci_transport->close(hci_stack.config); 803 804 log_info("hci_power_control_off - hci_transport closed\n"); 805 806 // power off 807 if (hci_stack.control && hci_stack.control->off){ 808 (*hci_stack.control->off)(hci_stack.config); 809 } 810 811 log_info("hci_power_control_off - control closed\n"); 812 813 hci_stack.state = HCI_STATE_OFF; 814 } 815 816 static void hci_power_control_sleep(void){ 817 818 log_info("hci_power_control_sleep\n"); 819 820 #if 0 821 // don't close serial port during sleep 822 823 // close low-level device 824 hci_stack.hci_transport->close(hci_stack.config); 825 #endif 826 827 // sleep mode 828 if (hci_stack.control && hci_stack.control->sleep){ 829 (*hci_stack.control->sleep)(hci_stack.config); 830 } 831 832 hci_stack.state = HCI_STATE_SLEEPING; 833 } 834 835 static int hci_power_control_wake(void){ 836 837 log_info("hci_power_control_wake\n"); 838 839 // wake on 840 if (hci_stack.control && hci_stack.control->wake){ 841 (*hci_stack.control->wake)(hci_stack.config); 842 } 843 844 #if 0 845 // open low-level device 846 int err = hci_stack.hci_transport->open(hci_stack.config); 847 if (err){ 848 log_error( "HCI_INIT failed, turning Bluetooth off again\n"); 849 if (hci_stack.control && hci_stack.control->off){ 850 (*hci_stack.control->off)(hci_stack.config); 851 } 852 hci_emit_hci_open_failed(); 853 return err; 854 } 855 #endif 856 857 return 0; 858 } 859 860 861 int hci_power_control(HCI_POWER_MODE power_mode){ 862 863 log_info("hci_power_control: %u, current mode %u\n", power_mode, hci_stack.state); 864 865 int err = 0; 866 switch (hci_stack.state){ 867 868 case HCI_STATE_OFF: 869 switch (power_mode){ 870 case HCI_POWER_ON: 871 err = hci_power_control_on(); 872 if (err) return err; 873 // set up state machine 874 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 875 hci_stack.state = HCI_STATE_INITIALIZING; 876 hci_stack.substate = 0; 877 break; 878 case HCI_POWER_OFF: 879 // do nothing 880 break; 881 case HCI_POWER_SLEEP: 882 // do nothing (with SLEEP == OFF) 883 break; 884 } 885 break; 886 887 case HCI_STATE_INITIALIZING: 888 switch (power_mode){ 889 case HCI_POWER_ON: 890 // do nothing 891 break; 892 case HCI_POWER_OFF: 893 // no connections yet, just turn it off 894 hci_power_control_off(); 895 break; 896 case HCI_POWER_SLEEP: 897 // no connections yet, just turn it off 898 hci_power_control_sleep(); 899 break; 900 } 901 break; 902 903 case HCI_STATE_WORKING: 904 switch (power_mode){ 905 case HCI_POWER_ON: 906 // do nothing 907 break; 908 case HCI_POWER_OFF: 909 // see hci_run 910 hci_stack.state = HCI_STATE_HALTING; 911 break; 912 case HCI_POWER_SLEEP: 913 // see hci_run 914 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 915 hci_stack.substate = 0; 916 break; 917 } 918 break; 919 920 case HCI_STATE_HALTING: 921 switch (power_mode){ 922 case HCI_POWER_ON: 923 // set up state machine 924 hci_stack.state = HCI_STATE_INITIALIZING; 925 hci_stack.substate = 0; 926 break; 927 case HCI_POWER_OFF: 928 // do nothing 929 break; 930 case HCI_POWER_SLEEP: 931 // see hci_run 932 hci_stack.state = HCI_STATE_FALLING_ASLEEP; 933 hci_stack.substate = 0; 934 break; 935 } 936 break; 937 938 case HCI_STATE_FALLING_ASLEEP: 939 switch (power_mode){ 940 case HCI_POWER_ON: 941 942 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 943 // nothing to do, if H4 supports power management 944 if (bt_control_iphone_power_management_enabled()){ 945 hci_stack.state = HCI_STATE_INITIALIZING; 946 hci_stack.substate = HCI_INTIALIZING_SUBSTATE_AFTER_SLEEP; 947 break; 948 } 949 #endif 950 // set up state machine 951 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 952 hci_stack.state = HCI_STATE_INITIALIZING; 953 hci_stack.substate = 0; 954 break; 955 case HCI_POWER_OFF: 956 // see hci_run 957 hci_stack.state = HCI_STATE_HALTING; 958 break; 959 case HCI_POWER_SLEEP: 960 // do nothing 961 break; 962 } 963 break; 964 965 case HCI_STATE_SLEEPING: 966 switch (power_mode){ 967 case HCI_POWER_ON: 968 969 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 970 // nothing to do, if H4 supports power management 971 if (bt_control_iphone_power_management_enabled()){ 972 hci_stack.state = HCI_STATE_INITIALIZING; 973 hci_stack.substate = HCI_INTIALIZING_SUBSTATE_AFTER_SLEEP; 974 hci_update_scan_enable(); 975 break; 976 } 977 #endif 978 err = hci_power_control_wake(); 979 if (err) return err; 980 // set up state machine 981 hci_stack.num_cmd_packets = 1; // assume that one cmd can be sent 982 hci_stack.state = HCI_STATE_INITIALIZING; 983 hci_stack.substate = 0; 984 break; 985 case HCI_POWER_OFF: 986 hci_stack.state = HCI_STATE_HALTING; 987 break; 988 case HCI_POWER_SLEEP: 989 // do nothing 990 break; 991 } 992 break; 993 } 994 995 // create internal event 996 hci_emit_state(); 997 998 // trigger next/first action 999 hci_run(); 1000 1001 return 0; 1002 } 1003 1004 static void hci_update_scan_enable(void){ 1005 // 2 = page scan, 1 = inq scan 1006 hci_stack.new_scan_enable_value = hci_stack.connectable << 1 | hci_stack.discoverable; 1007 hci_run(); 1008 } 1009 1010 void hci_discoverable_control(uint8_t enable){ 1011 if (enable) enable = 1; // normalize argument 1012 1013 if (hci_stack.discoverable == enable){ 1014 hci_emit_discoverable_enabled(hci_stack.discoverable); 1015 return; 1016 } 1017 1018 hci_stack.discoverable = enable; 1019 hci_update_scan_enable(); 1020 } 1021 1022 void hci_connectable_control(uint8_t enable){ 1023 if (enable) enable = 1; // normalize argument 1024 1025 // don't emit event 1026 if (hci_stack.connectable == enable) return; 1027 1028 hci_stack.connectable = enable; 1029 hci_update_scan_enable(); 1030 } 1031 1032 void hci_run(){ 1033 1034 hci_connection_t * connection; 1035 linked_item_t * it; 1036 1037 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1038 1039 // global/non-connection oriented commands 1040 1041 // decline incoming connections 1042 if (hci_stack.decline_reason){ 1043 uint8_t reason = hci_stack.decline_reason; 1044 hci_stack.decline_reason = 0; 1045 hci_send_cmd(&hci_reject_connection_request, hci_stack.decline_addr, reason); 1046 } 1047 1048 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1049 1050 // send scan enable 1051 if (hci_stack.state == HCI_STATE_WORKING && hci_stack.new_scan_enable_value != 0xff){ 1052 hci_send_cmd(&hci_write_scan_enable, hci_stack.new_scan_enable_value); 1053 hci_stack.new_scan_enable_value = 0xff; 1054 } 1055 1056 // send pending HCI commands 1057 for (it = (linked_item_t *) hci_stack.connections; it ; it = it->next){ 1058 1059 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1060 1061 connection = (hci_connection_t *) it; 1062 1063 if (connection->state == RECEIVED_CONNECTION_REQUEST){ 1064 log_info("sending hci_accept_connection_request\n"); 1065 hci_send_cmd(&hci_accept_connection_request, connection->address, 1); 1066 connection->state = ACCEPTED_CONNECTION_REQUEST; 1067 } 1068 1069 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1070 1071 if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){ 1072 link_key_t link_key; 1073 log_info("responding to link key request\n"); 1074 if ( hci_stack.remote_device_db->get_link_key( &connection->address, &link_key)){ 1075 hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key); 1076 } else { 1077 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 1078 } 1079 connectionClearAuthenticationFlags(connection, HANDLE_LINK_KEY_REQUEST); 1080 } 1081 } 1082 1083 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1084 1085 switch (hci_stack.state){ 1086 case HCI_STATE_INITIALIZING: 1087 // log_info("hci_init: substate %u\n", hci_stack.substate); 1088 if (hci_stack.substate % 2) { 1089 // odd: waiting for command completion 1090 return; 1091 } 1092 switch (hci_stack.substate >> 1){ 1093 case 0: // RESET 1094 hci_send_cmd(&hci_reset); 1095 if (hci_stack.config == 0 || ((hci_uart_config_t *)hci_stack.config)->baudrate_main == 0){ 1096 // skip baud change 1097 hci_stack.substate = 4; // >> 1 = 2 1098 } 1099 break; 1100 case 1: // SEND BAUD CHANGE 1101 hci_stack.control->baudrate_cmd(hci_stack.config, ((hci_uart_config_t *)hci_stack.config)->baudrate_main, hci_stack.hci_packet_buffer); 1102 hci_send_cmd_packet(hci_stack.hci_packet_buffer, 3 + hci_stack.hci_packet_buffer[2]); 1103 break; 1104 case 2: // LOCAL BAUD CHANGE 1105 hci_stack.hci_transport->set_baudrate(((hci_uart_config_t *)hci_stack.config)->baudrate_main); 1106 hci_stack.substate += 2; 1107 // break missing here for fall through 1108 1109 case 3: 1110 // custom initialization 1111 if (hci_stack.control && hci_stack.control->next_cmd){ 1112 int valid_cmd = (*hci_stack.control->next_cmd)(hci_stack.config, hci_stack.hci_packet_buffer); 1113 if (valid_cmd){ 1114 int size = 3 + hci_stack.hci_packet_buffer[2]; 1115 hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack.hci_packet_buffer, size); 1116 hci_stack.substate = 4; // more init commands 1117 break; 1118 } 1119 log_info("hci_run: init script done\n\r"); 1120 } 1121 // otherwise continue 1122 hci_send_cmd(&hci_read_bd_addr); 1123 break; 1124 case 4: 1125 hci_send_cmd(&hci_read_buffer_size); 1126 break; 1127 case 5: 1128 // ca. 15 sec 1129 hci_send_cmd(&hci_write_page_timeout, 0x6000); 1130 break; 1131 case 6: 1132 hci_send_cmd(&hci_write_scan_enable, (hci_stack.connectable << 1) | hci_stack.discoverable); // page scan 1133 break; 1134 case 7: 1135 hci_send_cmd(&hci_read_local_supported_features); 1136 break; 1137 case 8: 1138 #ifndef EMBEDDED 1139 { 1140 char hostname[30]; 1141 gethostname(hostname, 30); 1142 hostname[29] = '\0'; 1143 hci_send_cmd(&hci_write_local_name, hostname); 1144 break; 1145 } 1146 case 9: 1147 #ifdef USE_BLUETOOL 1148 hci_send_cmd(&hci_write_class_of_device, 0x007a020c); // Smartphone 1149 break; 1150 1151 case 10: 1152 #endif 1153 #endif 1154 // done. 1155 hci_stack.state = HCI_STATE_WORKING; 1156 hci_emit_state(); 1157 break; 1158 default: 1159 break; 1160 } 1161 hci_stack.substate++; 1162 break; 1163 1164 case HCI_STATE_HALTING: 1165 1166 log_info("HCI_STATE_HALTING\n"); 1167 // close all open connections 1168 connection = (hci_connection_t *) hci_stack.connections; 1169 if (connection){ 1170 1171 // send disconnect 1172 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1173 1174 log_info("HCI_STATE_HALTING, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1175 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1176 1177 // send disconnected event right away - causes higher layer connections to get closed, too. 1178 hci_shutdown_connection(connection); 1179 return; 1180 } 1181 log_info("HCI_STATE_HALTING, calling off\n"); 1182 1183 // switch mode 1184 hci_power_control_off(); 1185 1186 log_info("HCI_STATE_HALTING, emitting state\n"); 1187 hci_emit_state(); 1188 log_info("HCI_STATE_HALTING, done\n"); 1189 break; 1190 1191 case HCI_STATE_FALLING_ASLEEP: 1192 switch(hci_stack.substate) { 1193 case 0: 1194 log_info("HCI_STATE_FALLING_ASLEEP\n"); 1195 // close all open connections 1196 connection = (hci_connection_t *) hci_stack.connections; 1197 1198 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1199 // don't close connections, if H4 supports power management 1200 if (bt_control_iphone_power_management_enabled()){ 1201 connection = NULL; 1202 } 1203 #endif 1204 if (connection){ 1205 1206 // send disconnect 1207 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1208 1209 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u\n", connection, (uint16_t)connection->con_handle); 1210 hci_send_cmd(&hci_disconnect, connection->con_handle, 0x13); // remote closed connection 1211 1212 // send disconnected event right away - causes higher layer connections to get closed, too. 1213 hci_shutdown_connection(connection); 1214 return; 1215 } 1216 1217 // disable page and inquiry scan 1218 if (!hci_can_send_packet_now(HCI_COMMAND_DATA_PACKET)) return; 1219 1220 log_info("HCI_STATE_HALTING, disabling inq cans\n"); 1221 hci_send_cmd(&hci_write_scan_enable, hci_stack.connectable << 1); // drop inquiry scan but keep page scan 1222 1223 // continue in next sub state 1224 hci_stack.substate++; 1225 break; 1226 case 1: 1227 // wait for command complete "hci_write_scan_enable" in event_handler(); 1228 break; 1229 case 2: 1230 log_info("HCI_STATE_HALTING, calling sleep\n"); 1231 #if defined(USE_POWERMANAGEMENT) && defined(USE_BLUETOOL) 1232 // don't actually go to sleep, if H4 supports power management 1233 if (bt_control_iphone_power_management_enabled()){ 1234 // SLEEP MODE reached 1235 hci_stack.state = HCI_STATE_SLEEPING; 1236 hci_emit_state(); 1237 break; 1238 } 1239 #endif 1240 // switch mode 1241 hci_power_control_sleep(); // changes hci_stack.state to SLEEP 1242 hci_emit_state(); 1243 break; 1244 1245 default: 1246 break; 1247 } 1248 break; 1249 1250 default: 1251 break; 1252 } 1253 } 1254 1255 int hci_send_cmd_packet(uint8_t *packet, int size){ 1256 bd_addr_t addr; 1257 hci_connection_t * conn; 1258 // house-keeping 1259 1260 // create_connection? 1261 if (IS_COMMAND(packet, hci_create_connection)){ 1262 bt_flip_addr(addr, &packet[3]); 1263 log_info("Create_connection to %s\n", bd_addr_to_str(addr)); 1264 conn = connection_for_address(addr); 1265 if (conn) { 1266 // if connection exists 1267 if (conn->state == OPEN) { 1268 // and OPEN, emit connection complete command 1269 hci_emit_connection_complete(conn, 0); 1270 } 1271 // otherwise, just ignore as it is already in the open process 1272 return 0; // don't sent packet to controller 1273 1274 } 1275 // create connection struct and register, state = SENT_CREATE_CONNECTION 1276 conn = create_connection_for_addr(addr); 1277 if (!conn){ 1278 // notify client that alloc failed 1279 hci_emit_connection_complete(conn, BTSTACK_MEMORY_ALLOC_FAILED); 1280 return 0; // don't sent packet to controller 1281 } 1282 conn->state = SENT_CREATE_CONNECTION; 1283 } 1284 1285 if (IS_COMMAND(packet, hci_link_key_request_reply)){ 1286 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY); 1287 } 1288 if (IS_COMMAND(packet, hci_link_key_request_negative_reply)){ 1289 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST); 1290 } 1291 if (IS_COMMAND(packet, hci_pin_code_request_reply)){ 1292 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_REPLY); 1293 } 1294 if (IS_COMMAND(packet, hci_pin_code_request_negative_reply)){ 1295 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_PIN_CODE_NEGATIVE_REPLY); 1296 } 1297 1298 if (IS_COMMAND(packet, hci_delete_stored_link_key)){ 1299 if (hci_stack.remote_device_db){ 1300 bt_flip_addr(addr, &packet[3]); 1301 hci_stack.remote_device_db->delete_link_key(&addr); 1302 } 1303 } 1304 1305 hci_stack.num_cmd_packets--; 1306 return hci_stack.hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 1307 } 1308 1309 /** 1310 * pre: numcmds >= 0 - it's allowed to send a command to the controller 1311 */ 1312 int hci_send_cmd(const hci_cmd_t *cmd, ...){ 1313 va_list argptr; 1314 va_start(argptr, cmd); 1315 uint16_t size = hci_create_cmd_internal(hci_stack.hci_packet_buffer, cmd, argptr); 1316 va_end(argptr); 1317 return hci_send_cmd_packet(hci_stack.hci_packet_buffer, size); 1318 } 1319 1320 // Create various non-HCI events. 1321 // TODO: generalize, use table similar to hci_create_command 1322 1323 void hci_emit_state(){ 1324 log_info("BTSTACK_EVENT_STATE %u", hci_stack.state); 1325 uint8_t event[3]; 1326 event[0] = BTSTACK_EVENT_STATE; 1327 event[1] = sizeof(event) - 2; 1328 event[2] = hci_stack.state; 1329 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1330 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1331 } 1332 1333 void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status){ 1334 uint8_t event[13]; 1335 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 1336 event[1] = sizeof(event) - 2; 1337 event[2] = status; 1338 bt_store_16(event, 3, conn->con_handle); 1339 bt_flip_addr(&event[5], conn->address); 1340 event[11] = 1; // ACL connection 1341 event[12] = 0; // encryption disabled 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 void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason){ 1347 uint8_t event[6]; 1348 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 1349 event[1] = sizeof(event) - 2; 1350 event[2] = 0; // status = OK 1351 bt_store_16(event, 3, handle); 1352 event[5] = reason; 1353 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1354 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1355 } 1356 1357 void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 1358 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 1359 uint8_t event[4]; 1360 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 1361 event[1] = sizeof(event) - 2; 1362 bt_store_16(event, 2, conn->con_handle); 1363 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1364 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1365 } 1366 1367 void hci_emit_nr_connections_changed(){ 1368 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 1369 uint8_t event[3]; 1370 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 1371 event[1] = sizeof(event) - 2; 1372 event[2] = nr_hci_connections(); 1373 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1374 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1375 } 1376 1377 void hci_emit_hci_open_failed(){ 1378 log_info("BTSTACK_EVENT_POWERON_FAILED"); 1379 uint8_t event[2]; 1380 event[0] = BTSTACK_EVENT_POWERON_FAILED; 1381 event[1] = sizeof(event) - 2; 1382 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1383 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1384 } 1385 1386 #ifndef EMBEDDED 1387 void hci_emit_btstack_version() { 1388 log_info("BTSTACK_EVENT_VERSION %u.%u", BTSTACK_MAJOR, BTSTACK_MINOR); 1389 uint8_t event[6]; 1390 event[0] = BTSTACK_EVENT_VERSION; 1391 event[1] = sizeof(event) - 2; 1392 event[2] = BTSTACK_MAJOR; 1393 event[3] = BTSTACK_MINOR; 1394 bt_store_16(event, 4, BTSTACK_REVISION); 1395 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1396 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1397 } 1398 #endif 1399 1400 void hci_emit_system_bluetooth_enabled(uint8_t enabled){ 1401 log_info("BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED %u", enabled); 1402 uint8_t event[3]; 1403 event[0] = BTSTACK_EVENT_SYSTEM_BLUETOOTH_ENABLED; 1404 event[1] = sizeof(event) - 2; 1405 event[2] = enabled; 1406 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1407 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1408 } 1409 1410 void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name){ 1411 uint8_t event[2+1+6+248+1]; // +1 for \0 in log_info 1412 event[0] = BTSTACK_EVENT_REMOTE_NAME_CACHED; 1413 event[1] = sizeof(event) - 2 - 1; 1414 event[2] = 0; // just to be compatible with HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 1415 bt_flip_addr(&event[3], *addr); 1416 memcpy(&event[9], name, 248); 1417 1418 event[9+248] = 0; // assert \0 for log_info 1419 log_info("BTSTACK_EVENT_REMOTE_NAME_CACHED %s = '%s'", bd_addr_to_str(*addr), &event[9]); 1420 1421 hci_dump_packet(HCI_EVENT_PACKET, 0, event, sizeof(event)-1); 1422 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)-1); 1423 } 1424 1425 void hci_emit_discoverable_enabled(uint8_t enabled){ 1426 log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled); 1427 uint8_t event[3]; 1428 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 1429 event[1] = sizeof(event) - 2; 1430 event[2] = enabled; 1431 hci_dump_packet( HCI_EVENT_PACKET, 0, event, sizeof(event)); 1432 hci_stack.packet_handler(HCI_EVENT_PACKET, event, sizeof(event)); 1433 } 1434