1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 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 BLUEKITCHEN GMBH 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 34 * [email protected] 35 * 36 */ 37 38 /* 39 * hci.h 40 * 41 * Created by Matthias Ringwald on 4/29/09. 42 * 43 */ 44 45 #ifndef __HCI_H 46 #define __HCI_H 47 48 #include "btstack_config.h" 49 50 #include "btstack_chipset.h" 51 #include "btstack_control.h" 52 #include "btstack_linked_list.h" 53 #include "btstack_util.h" 54 #include "classic/btstack_link_key_db.h" 55 #include "hci_cmd.h" 56 #include "gap.h" 57 #include "hci_transport.h" 58 59 #ifdef ENABLE_BLE 60 #include "ble/att_db.h" 61 #endif 62 63 #include <stdint.h> 64 #include <stdlib.h> 65 #include <stdarg.h> 66 67 #if defined __cplusplus 68 extern "C" { 69 #endif 70 71 // packet buffer sizes 72 73 // Max HCI Command LE payload size: 74 // 64 from LE Generate DHKey command 75 // 32 from LE Encrypt command 76 #if defined(ENABLE_LE_SECURE_CONNECTIONS) && !defined(ENABLE_MICRO_ECC_FOR_LE_SECURE_CONNECTIONS) 77 #define HCI_CMD_PAYLOAD_SIZE_LE 64 78 #else 79 #define HCI_CMD_PAYLOAD_SIZE_LE 32 80 #endif 81 82 // HCI_ACL_PAYLOAD_SIZE is configurable and defined in config.h 83 // addition byte in even to terminate remote name request with '\0' 84 #define HCI_EVENT_BUFFER_SIZE (HCI_EVENT_HEADER_SIZE + HCI_EVENT_PAYLOAD_SIZE + 1) 85 86 #ifdef ENABLE_CLASSIC 87 #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE) 88 #else 89 #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE_LE) 90 #endif 91 92 #define HCI_ACL_BUFFER_SIZE (HCI_ACL_HEADER_SIZE + HCI_ACL_PAYLOAD_SIZE) 93 94 // size of hci incoming buffer, big enough for event or acl packet without H4 packet type 95 #ifdef HCI_INCOMING_PACKET_BUFFER_SIZE 96 #if HCI_INCOMING_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE 97 #error HCI_INCOMING_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE 98 #endif 99 #if HCI_INCOMING_PACKET_BUFFER_SIZE < HCI_EVENT_BUFFER_SIZE 100 #error HCI_INCOMING_PACKET_BUFFER_SIZE must be equal or larger than HCI_EVENT_BUFFER_SIZE 101 #endif 102 #else 103 #if HCI_ACL_BUFFER_SIZE > HCI_EVENT_BUFFER_SIZE 104 #define HCI_INCOMING_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE 105 #else 106 #define HCI_INCOMING_PACKET_BUFFER_SIZE HCI_EVENT_BUFFER_SIZE 107 #endif 108 #endif 109 110 // size of hci outgoing buffer, big enough for command or acl packet without H4 packet type 111 #ifdef HCI_OUTGOING_PACKET_BUFFER_SIZE 112 #if HCI_OUTGOING_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE 113 #error HCI_OUTGOING_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE 114 #endif 115 #if HCI_OUTGOING_PACKET_BUFFER_SIZE < HCI_CMD_BUFFER_SIZE 116 #error HCI_OUTGOING_PACKET_BUFFER_SIZE must be equal or larger than HCI_CMD_BUFFER_SIZE 117 #endif 118 #else 119 #if HCI_ACL_BUFFER_SIZE > HCI_CMD_BUFFER_SIZE 120 #define HCI_OUTGOING_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE 121 #else 122 #define HCI_OUTGOING_PACKET_BUFFER_SIZE HCI_CMD_BUFFER_SIZE 123 #endif 124 #endif 125 126 // additional pre-buffer space for packets to Bluetooth module, for now, used for HCI Transport H4 DMA 127 #ifndef HCI_OUTGOING_PRE_BUFFER_SIZE 128 #ifdef HAVE_HOST_CONTROLLER_API 129 #define HCI_OUTGOING_PRE_BUFFER_SIZE 0 130 #else 131 #define HCI_OUTGOING_PRE_BUFFER_SIZE 1 132 #endif 133 #endif 134 135 // BNEP may uncompress the IP Header by 16 bytes 136 #ifndef HCI_INCOMING_PRE_BUFFER_SIZE 137 #ifdef ENABLE_CLASSIC 138 #define HCI_INCOMING_PRE_BUFFER_SIZE (16 - HCI_ACL_HEADER_SIZE - 4) 139 #else 140 #define HCI_INCOMING_PRE_BUFFER_SIZE 0 141 #endif 142 #endif 143 144 // 145 #define IS_COMMAND(packet, command) (little_endian_read_16(packet,0) == command.opcode) 146 147 // check if command complete event for given command 148 #define HCI_EVENT_IS_COMMAND_COMPLETE(event,cmd) ( event[0] == HCI_EVENT_COMMAND_COMPLETE && little_endian_read_16(event,3) == cmd.opcode) 149 #define HCI_EVENT_IS_COMMAND_STATUS(event,cmd) ( event[0] == HCI_EVENT_COMMAND_STATUS && little_endian_read_16(event,4) == cmd.opcode) 150 151 // Code+Len=2, Pkts+Opcode=3; total=5 152 #define OFFSET_OF_DATA_IN_COMMAND_COMPLETE 5 153 154 // ACL Packet 155 #define READ_ACL_CONNECTION_HANDLE( buffer ) ( little_endian_read_16(buffer,0) & 0x0fff) 156 #define READ_SCO_CONNECTION_HANDLE( buffer ) ( little_endian_read_16(buffer,0) & 0x0fff) 157 #define READ_ACL_FLAGS( buffer ) ( buffer[1] >> 4 ) 158 #define READ_ACL_LENGTH( buffer ) (little_endian_read_16(buffer, 2)) 159 160 // Sneak peak into L2CAP Packet 161 #define READ_L2CAP_LENGTH(buffer) ( little_endian_read_16(buffer, 4)) 162 #define READ_L2CAP_CHANNEL_ID(buffer) ( little_endian_read_16(buffer, 6)) 163 164 /** 165 * LE connection parameter update state 166 */ 167 168 typedef enum { 169 CON_PARAMETER_UPDATE_NONE, 170 // L2CAP 171 CON_PARAMETER_UPDATE_SEND_REQUEST, 172 CON_PARAMETER_UPDATE_SEND_RESPONSE, 173 CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS, 174 CON_PARAMETER_UPDATE_DENY, 175 // HCI - in respnose to HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST 176 CON_PARAMETER_UPDATE_REPLY, 177 CON_PARAMETER_UPDATE_NEGATIVE_REPLY, 178 } le_con_parameter_update_state_t; 179 180 // Authentication flags 181 typedef enum { 182 AUTH_FLAGS_NONE = 0x0000, 183 RECV_LINK_KEY_REQUEST = 0x0001, 184 HANDLE_LINK_KEY_REQUEST = 0x0002, 185 SENT_LINK_KEY_REPLY = 0x0004, 186 SENT_LINK_KEY_NEGATIVE_REQUEST = 0x0008, 187 RECV_LINK_KEY_NOTIFICATION = 0x0010, 188 DENY_PIN_CODE_REQUEST = 0x0040, 189 RECV_IO_CAPABILITIES_REQUEST = 0x0080, 190 SEND_IO_CAPABILITIES_REPLY = 0x0100, 191 SEND_USER_CONFIRM_REPLY = 0x0200, 192 SEND_USER_PASSKEY_REPLY = 0x0400, 193 194 // pairing status 195 LEGACY_PAIRING_ACTIVE = 0x2000, 196 SSP_PAIRING_ACTIVE = 0x4000, 197 198 // connection status 199 CONNECTION_ENCRYPTED = 0x8000, 200 } hci_authentication_flags_t; 201 202 /** 203 * Connection State 204 */ 205 typedef enum { 206 SEND_CREATE_CONNECTION = 0, 207 SENT_CREATE_CONNECTION, 208 SEND_CANCEL_CONNECTION, 209 SENT_CANCEL_CONNECTION, 210 RECEIVED_CONNECTION_REQUEST, 211 ACCEPTED_CONNECTION_REQUEST, 212 REJECTED_CONNECTION_REQUEST, 213 OPEN, 214 SEND_DISCONNECT, 215 SENT_DISCONNECT, 216 RECEIVED_DISCONNECTION_COMPLETE 217 } CONNECTION_STATE; 218 219 // bonding flags 220 enum { 221 BONDING_REQUEST_REMOTE_FEATURES = 0x01, 222 BONDING_RECEIVED_REMOTE_FEATURES = 0x02, 223 BONDING_REMOTE_SUPPORTS_SSP = 0x04, 224 BONDING_DISCONNECT_SECURITY_BLOCK = 0x08, 225 BONDING_DISCONNECT_DEDICATED_DONE = 0x10, 226 BONDING_SEND_AUTHENTICATE_REQUEST = 0x20, 227 BONDING_SEND_ENCRYPTION_REQUEST = 0x40, 228 BONDING_DEDICATED = 0x80, 229 BONDING_EMIT_COMPLETE_ON_DISCONNECT = 0x100 230 }; 231 232 typedef enum { 233 BLUETOOTH_OFF = 1, 234 BLUETOOTH_ON, 235 BLUETOOTH_ACTIVE 236 } BLUETOOTH_STATE; 237 238 typedef enum { 239 LE_CONNECTING_IDLE, 240 LE_CONNECTING_DIRECT, 241 LE_CONNECTING_WHITELIST, 242 } le_connecting_state_t; 243 244 #ifdef ENABLE_BLE 245 246 // 247 // SM internal types and globals 248 // 249 250 typedef enum { 251 252 // general states 253 SM_GENERAL_IDLE, 254 SM_GENERAL_SEND_PAIRING_FAILED, 255 SM_GENERAL_TIMEOUT, // no other security messages are exchanged 256 257 // Phase 1: Pairing Feature Exchange 258 SM_PH1_W4_USER_RESPONSE, 259 260 // Phase 2: Authenticating and Encrypting 261 262 // get random number for use as TK Passkey if we show it 263 SM_PH2_GET_RANDOM_TK, 264 SM_PH2_W4_RANDOM_TK, 265 266 // get local random number for confirm c1 267 SM_PH2_C1_GET_RANDOM_A, 268 SM_PH2_C1_W4_RANDOM_A, 269 SM_PH2_C1_GET_RANDOM_B, 270 SM_PH2_C1_W4_RANDOM_B, 271 272 // calculate confirm value for local side 273 SM_PH2_C1_GET_ENC_A, 274 SM_PH2_C1_W4_ENC_A, 275 276 // calculate confirm value for remote side 277 SM_PH2_C1_GET_ENC_C, 278 SM_PH2_C1_W4_ENC_C, 279 280 SM_PH2_C1_SEND_PAIRING_CONFIRM, 281 SM_PH2_SEND_PAIRING_RANDOM, 282 283 // calc STK 284 SM_PH2_CALC_STK, 285 SM_PH2_W4_STK, 286 287 SM_PH2_W4_CONNECTION_ENCRYPTED, 288 289 // Phase 3: Transport Specific Key Distribution 290 // calculate DHK, Y, EDIV, and LTK 291 SM_PH3_Y_GET_ENC, 292 SM_PH3_Y_W4_ENC, 293 SM_PH3_LTK_GET_ENC, 294 295 // exchange keys 296 SM_PH3_DISTRIBUTE_KEYS, 297 SM_PH3_RECEIVE_KEYS, 298 299 // RESPONDER ROLE 300 SM_RESPONDER_IDLE, 301 SM_RESPONDER_SEND_SECURITY_REQUEST, 302 SM_RESPONDER_PH0_RECEIVED_LTK_REQUEST, 303 SM_RESPONDER_PH0_RECEIVED_LTK_W4_IRK, 304 SM_RESPONDER_PH0_SEND_LTK_REQUESTED_NEGATIVE_REPLY, 305 SM_RESPONDER_PH1_W4_PAIRING_REQUEST, 306 SM_RESPONDER_PH1_PAIRING_REQUEST_RECEIVED, 307 SM_RESPONDER_PH1_SEND_PAIRING_RESPONSE, 308 SM_RESPONDER_PH1_W4_PAIRING_CONFIRM, 309 SM_RESPONDER_PH2_W4_PAIRING_RANDOM, 310 SM_RESPONDER_PH2_W4_LTK_REQUEST, 311 SM_RESPONDER_PH2_SEND_LTK_REPLY, 312 313 // Phase 4: re-establish previously distributed LTK 314 SM_RESPONDER_PH4_Y_GET_ENC, 315 SM_RESPONDER_PH4_Y_W4_ENC, 316 SM_RESPONDER_PH4_SEND_LTK_REPLY, 317 318 // INITITIATOR ROLE 319 SM_INITIATOR_CONNECTED, 320 SM_INITIATOR_PH0_HAS_LTK, 321 SM_INITIATOR_PH0_SEND_START_ENCRYPTION, 322 SM_INITIATOR_PH0_W4_CONNECTION_ENCRYPTED, 323 SM_INITIATOR_PH1_W2_SEND_PAIRING_REQUEST, 324 SM_INITIATOR_PH1_SEND_PAIRING_REQUEST, 325 SM_INITIATOR_PH1_W4_PAIRING_RESPONSE, 326 SM_INITIATOR_PH2_W4_PAIRING_CONFIRM, 327 SM_INITIATOR_PH2_W4_PAIRING_RANDOM, 328 SM_INITIATOR_PH3_SEND_START_ENCRYPTION, 329 330 // LE Secure Connections 331 SM_SC_RECEIVED_LTK_REQUEST, 332 SM_SC_SEND_PUBLIC_KEY_COMMAND, 333 SM_SC_W4_PUBLIC_KEY_COMMAND, 334 SM_SC_W2_GET_RANDOM_A, 335 SM_SC_W4_GET_RANDOM_A, 336 SM_SC_W2_GET_RANDOM_B, 337 SM_SC_W4_GET_RANDOM_B, 338 SM_SC_W2_CMAC_FOR_CONFIRMATION, 339 SM_SC_W4_CMAC_FOR_CONFIRMATION, 340 SM_SC_SEND_CONFIRMATION, 341 SM_SC_W2_CMAC_FOR_CHECK_CONFIRMATION, 342 SM_SC_W4_CMAC_FOR_CHECK_CONFIRMATION, 343 SM_SC_W4_CONFIRMATION, 344 SM_SC_SEND_PAIRING_RANDOM, 345 SM_SC_W4_PAIRING_RANDOM, 346 SM_SC_W2_CALCULATE_G2, 347 SM_SC_W4_CALCULATE_G2, 348 SM_SC_W4_CALCULATE_DHKEY, 349 SM_SC_W2_CALCULATE_F5_SALT, 350 SM_SC_W4_CALCULATE_F5_SALT, 351 SM_SC_W2_CALCULATE_F5_MACKEY, 352 SM_SC_W4_CALCULATE_F5_MACKEY, 353 SM_SC_W2_CALCULATE_F5_LTK, 354 SM_SC_W4_CALCULATE_F5_LTK, 355 SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK, 356 SM_SC_W4_CALCULATE_F6_FOR_DHKEY_CHECK, 357 SM_SC_W2_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 358 SM_SC_W4_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 359 SM_SC_W4_USER_RESPONSE, 360 SM_SC_SEND_DHKEY_CHECK_COMMAND, 361 SM_SC_W4_DHKEY_CHECK_COMMAND, 362 SM_SC_W4_LTK_REQUEST_SC, 363 SM_SC_W2_CALCULATE_H6_ILK, 364 SM_SC_W4_CALCULATE_H6_ILK, 365 SM_SC_W2_CALCULATE_H6_BR_EDR_LINK_KEY, 366 SM_SC_W4_CALCULATE_H6_BR_EDR_LINK_KEY, 367 } security_manager_state_t; 368 369 typedef enum { 370 IRK_LOOKUP_IDLE, 371 IRK_LOOKUP_W4_READY, 372 IRK_LOOKUP_STARTED, 373 IRK_LOOKUP_SUCCEEDED, 374 IRK_LOOKUP_FAILED 375 } irk_lookup_state_t; 376 377 typedef uint8_t sm_pairing_packet_t[7]; 378 379 // connection info available as long as connection exists 380 typedef struct sm_connection { 381 hci_con_handle_t sm_handle; 382 uint8_t sm_role; // 0 - IamMaster, 1 = IamSlave 383 uint8_t sm_security_request_received; 384 uint8_t sm_pairing_requested; 385 uint8_t sm_peer_addr_type; 386 bd_addr_t sm_peer_address; 387 security_manager_state_t sm_engine_state; 388 irk_lookup_state_t sm_irk_lookup_state; 389 uint8_t sm_connection_encrypted; 390 uint8_t sm_connection_authenticated; // [0..1] 391 uint8_t sm_actual_encryption_key_size; 392 sm_pairing_packet_t sm_m_preq; // only used during c1 393 authorization_state_t sm_connection_authorization_state; 394 uint16_t sm_local_ediv; 395 uint8_t sm_local_rand[8]; 396 int sm_le_db_index; 397 } sm_connection_t; 398 399 // 400 // ATT Server 401 // 402 403 // max ATT request matches L2CAP PDU -- allow to use smaller buffer 404 #ifndef ATT_REQUEST_BUFFER_SIZE 405 #define ATT_REQUEST_BUFFER_SIZE HCI_ACL_PAYLOAD_SIZE 406 #endif 407 408 typedef enum { 409 ATT_SERVER_IDLE, 410 ATT_SERVER_REQUEST_RECEIVED, 411 ATT_SERVER_W4_SIGNED_WRITE_VALIDATION, 412 ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED, 413 ATT_SERVER_RESPONSE_PENDING, 414 } att_server_state_t; 415 416 typedef struct { 417 att_server_state_t state; 418 419 uint8_t peer_addr_type; 420 bd_addr_t peer_address; 421 422 int ir_le_device_db_index; 423 uint8_t ir_lookup_active; 424 uint8_t pairing_active; 425 426 int value_indication_handle; 427 btstack_timer_source_t value_indication_timer; 428 429 att_connection_t connection; 430 431 btstack_linked_list_t notification_requests; 432 btstack_linked_list_t indication_requests; 433 434 uint16_t request_size; 435 uint8_t request_buffer[ATT_REQUEST_BUFFER_SIZE]; 436 437 } att_server_t; 438 439 #endif 440 441 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 442 typedef enum { 443 L2CAP_INFORMATION_STATE_IDLE = 0, 444 L2CAP_INFORMATION_STATE_W2_SEND_EXTENDED_FEATURE_REQUEST, 445 L2CAP_INFORMATION_STATE_W4_EXTENDED_FEATURE_RESPONSE, 446 L2CAP_INFORMATION_STATE_DONE 447 } l2cap_information_state_t; 448 449 typedef struct { 450 l2cap_information_state_t information_state; 451 uint16_t extended_feature_mask; 452 } l2cap_state_t; 453 #endif 454 455 // 456 typedef struct { 457 // linked list - assert: first field 458 btstack_linked_item_t item; 459 460 // remote side 461 bd_addr_t address; 462 463 // module handle 464 hci_con_handle_t con_handle; 465 466 // le public, le random, classic 467 bd_addr_type_t address_type; 468 469 // role: 0 - master, 1 - slave 470 uint8_t role; 471 472 // connection state 473 CONNECTION_STATE state; 474 475 // bonding 476 uint16_t bonding_flags; 477 uint8_t bonding_status; 478 479 // requested security level 480 gap_security_level_t requested_security_level; 481 482 // 483 link_key_type_t link_key_type; 484 485 // remote supported features 486 uint8_t remote_supported_feature_eSCO; 487 488 #ifdef ENABLE_CLASSIC 489 // connection mode, default ACL_CONNECTION_MODE_ACTIVE 490 uint8_t connection_mode; 491 492 // enter/exit sniff mode requests 493 uint16_t sniff_min_interval; // 0: idle, 0xffff exit sniff, else enter sniff 494 uint16_t sniff_max_interval; 495 uint16_t sniff_attempt; 496 uint16_t sniff_timeout; 497 #endif 498 499 // errands 500 uint32_t authentication_flags; 501 502 btstack_timer_source_t timeout; 503 504 // timeout in system ticks (HAVE_EMBEDDED_TICK) or milliseconds (HAVE_EMBEDDED_TIME_MS) 505 uint32_t timestamp; 506 507 // ACL packet recombination - PRE_BUFFER + ACL Header + ACL payload 508 uint8_t acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + 4 + HCI_ACL_BUFFER_SIZE]; 509 uint16_t acl_recombination_pos; 510 uint16_t acl_recombination_length; 511 512 // number packets sent to controller 513 uint8_t num_acl_packets_sent; 514 uint8_t num_sco_packets_sent; 515 516 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 517 uint8_t num_packets_completed; 518 #endif 519 520 // LE Connection parameter update 521 le_con_parameter_update_state_t le_con_parameter_update_state; 522 uint8_t le_con_param_update_identifier; 523 uint16_t le_conn_interval_min; 524 uint16_t le_conn_interval_max; 525 uint16_t le_conn_latency; 526 uint16_t le_supervision_timeout; 527 528 #ifdef ENABLE_BLE 529 uint16_t le_connection_interval; 530 // LE Security Manager 531 sm_connection_t sm_connection; 532 533 // ATT Server 534 att_server_t att_server; 535 #endif 536 537 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 538 l2cap_state_t l2cap_state; 539 #endif 540 541 } hci_connection_t; 542 543 544 /** 545 * HCI Inititizlization State Machine 546 */ 547 typedef enum hci_init_state{ 548 HCI_INIT_SEND_RESET = 0, 549 HCI_INIT_W4_SEND_RESET, 550 HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION, 551 HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION, 552 HCI_INIT_SEND_READ_LOCAL_NAME, 553 HCI_INIT_W4_SEND_READ_LOCAL_NAME, 554 555 HCI_INIT_SEND_BAUD_CHANGE, 556 HCI_INIT_W4_SEND_BAUD_CHANGE, 557 HCI_INIT_CUSTOM_INIT, 558 HCI_INIT_W4_CUSTOM_INIT, 559 HCI_INIT_SEND_RESET_CSR_WARM_BOOT, 560 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT, 561 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET, 562 HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY, 563 564 HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS, 565 HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS, 566 567 HCI_INIT_SEND_BAUD_CHANGE_BCM, 568 HCI_INIT_W4_SEND_BAUD_CHANGE_BCM, 569 570 HCI_INIT_SET_BD_ADDR, 571 HCI_INIT_W4_SET_BD_ADDR, 572 573 HCI_INIT_SEND_RESET_ST_WARM_BOOT, 574 HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT, 575 576 HCI_INIT_READ_BD_ADDR, 577 HCI_INIT_W4_READ_BD_ADDR, 578 579 HCI_INIT_READ_BUFFER_SIZE, 580 HCI_INIT_W4_READ_BUFFER_SIZE, 581 HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES, 582 HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES, 583 584 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 585 HCI_INIT_HOST_BUFFER_SIZE, 586 HCI_INIT_W4_HOST_BUFFER_SIZE, 587 HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 588 HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 589 #endif 590 591 HCI_INIT_SET_EVENT_MASK, 592 HCI_INIT_W4_SET_EVENT_MASK, 593 594 HCI_INIT_WRITE_SIMPLE_PAIRING_MODE, 595 HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE, 596 HCI_INIT_WRITE_PAGE_TIMEOUT, 597 HCI_INIT_W4_WRITE_PAGE_TIMEOUT, 598 HCI_INIT_WRITE_DEFAULT_LINK_POLICY_SETTING, 599 HCI_INIT_W4_WRITE_DEFAULT_LINK_POLICY_SETTING, 600 HCI_INIT_WRITE_CLASS_OF_DEVICE, 601 HCI_INIT_W4_WRITE_CLASS_OF_DEVICE, 602 HCI_INIT_WRITE_LOCAL_NAME, 603 HCI_INIT_W4_WRITE_LOCAL_NAME, 604 HCI_INIT_WRITE_EIR_DATA, 605 HCI_INIT_W4_WRITE_EIR_DATA, 606 HCI_INIT_WRITE_INQUIRY_MODE, 607 HCI_INIT_W4_WRITE_INQUIRY_MODE, 608 HCI_INIT_WRITE_SCAN_ENABLE, 609 HCI_INIT_W4_WRITE_SCAN_ENABLE, 610 611 // SCO over HCI 612 HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 613 HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 614 HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 615 HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 616 617 // SCO over HCI Broadcom 618 HCI_INIT_BCM_WRITE_SCO_PCM_INT, 619 HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT, 620 621 #ifdef ENABLE_BLE 622 HCI_INIT_LE_READ_BUFFER_SIZE, 623 HCI_INIT_W4_LE_READ_BUFFER_SIZE, 624 HCI_INIT_WRITE_LE_HOST_SUPPORTED, 625 HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED, 626 HCI_INIT_LE_SET_EVENT_MASK, 627 HCI_INIT_W4_LE_SET_EVENT_MASK, 628 #endif 629 630 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 631 HCI_INIT_LE_READ_MAX_DATA_LENGTH, 632 HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH, 633 HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH, 634 HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH, 635 #endif 636 637 #ifdef ENABLE_LE_CENTRAL 638 HCI_INIT_READ_WHITE_LIST_SIZE, 639 HCI_INIT_W4_READ_WHITE_LIST_SIZE, 640 641 HCI_INIT_LE_SET_SCAN_PARAMETERS, 642 HCI_INIT_W4_LE_SET_SCAN_PARAMETERS, 643 #endif 644 645 HCI_INIT_DONE, 646 647 HCI_FALLING_ASLEEP_DISCONNECT, 648 HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE, 649 HCI_FALLING_ASLEEP_COMPLETE, 650 651 HCI_INIT_AFTER_SLEEP 652 653 } hci_substate_t; 654 655 enum { 656 LE_ADVERTISEMENT_TASKS_DISABLE = 1 << 0, 657 LE_ADVERTISEMENT_TASKS_SET_ADV_DATA = 1 << 1, 658 LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA = 1 << 2, 659 LE_ADVERTISEMENT_TASKS_SET_PARAMS = 1 << 3, 660 LE_ADVERTISEMENT_TASKS_ENABLE = 1 << 4, 661 }; 662 663 enum { 664 LE_WHITELIST_ON_CONTROLLER = 1 << 0, 665 LE_WHITELIST_ADD_TO_CONTROLLER = 1 << 1, 666 LE_WHITELIST_REMOVE_FROM_CONTROLLER = 1 << 2, 667 }; 668 669 typedef struct { 670 btstack_linked_item_t item; 671 bd_addr_t address; 672 bd_addr_type_t address_type; 673 uint8_t state; 674 } whitelist_entry_t; 675 676 /** 677 * main data structure 678 */ 679 typedef struct { 680 // transport component with configuration 681 const hci_transport_t * hci_transport; 682 const void * config; 683 684 // chipset driver 685 const btstack_chipset_t * chipset; 686 687 // hardware power controller 688 const btstack_control_t * control; 689 690 /* link key db */ 691 const btstack_link_key_db_t * link_key_db; 692 693 // list of existing baseband connections 694 btstack_linked_list_t connections; 695 696 /* callback to L2CAP layer */ 697 btstack_packet_handler_t acl_packet_handler; 698 699 /* callback for SCO data */ 700 btstack_packet_handler_t sco_packet_handler; 701 702 /* callbacks for events */ 703 btstack_linked_list_t event_handlers; 704 705 // hardware error callback 706 void (*hardware_error_callback)(uint8_t error); 707 708 // basic configuration 709 const char * local_name; 710 const uint8_t * eir_data; 711 uint32_t class_of_device; 712 bd_addr_t local_bd_addr; 713 uint8_t default_link_policy_settings; 714 uint8_t ssp_enable; 715 uint8_t ssp_io_capability; 716 uint8_t ssp_authentication_requirement; 717 uint8_t ssp_auto_accept; 718 inquiry_mode_t inquiry_mode; 719 720 // single buffer for HCI packet assembly + additional prebuffer for H4 drivers 721 uint8_t * hci_packet_buffer; 722 uint8_t hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE + HCI_OUTGOING_PACKET_BUFFER_SIZE]; 723 uint8_t hci_packet_buffer_reserved; 724 uint16_t acl_fragmentation_pos; 725 uint16_t acl_fragmentation_total_size; 726 727 /* host to controller flow control */ 728 uint8_t num_cmd_packets; 729 uint8_t acl_packets_total_num; 730 uint16_t acl_data_packet_length; 731 uint8_t sco_packets_total_num; 732 uint8_t sco_data_packet_length; 733 uint8_t synchronous_flow_control_enabled; 734 uint8_t le_acl_packets_total_num; 735 uint16_t le_data_packets_length; 736 uint8_t sco_waiting_for_can_send_now; 737 738 /* local supported features */ 739 uint8_t local_supported_features[8]; 740 741 /* local supported commands summary - complete info is 64 bytes */ 742 /* 0 - Read Buffer Size */ 743 /* 1 - Write Le Host Supported */ 744 /* 2 - Write Synchronous Flow Control Enable (Octet 10/bit 4) */ 745 /* 3 - Write Default Erroneous Data Reporting (Octet 18/bit 3) */ 746 /* 4 - LE Write Suggested Default Data Length (Octet 34/bit 0) */ 747 /* 5 - LE Read Maximum Data Length (Octet 35/bit 3) */ 748 uint8_t local_supported_commands[1]; 749 750 /* bluetooth device information from hci read local version information */ 751 // uint16_t hci_version; 752 // uint16_t hci_revision; 753 // uint16_t lmp_version; 754 uint16_t manufacturer; 755 // uint16_t lmp_subversion; 756 757 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 758 uint16_t packet_types; 759 760 761 /* hci state machine */ 762 HCI_STATE state; 763 hci_substate_t substate; 764 btstack_timer_source_t timeout; 765 766 uint16_t last_cmd_opcode; 767 768 uint8_t cmds_ready; 769 770 /* buffer for scan enable cmd - 0xff no change */ 771 uint8_t new_scan_enable_value; 772 773 uint8_t discoverable; 774 uint8_t connectable; 775 uint8_t bondable; 776 777 uint8_t inquiry_state; // see hci.c for state defines 778 779 bd_addr_t remote_name_addr; 780 uint16_t remote_name_clock_offset; 781 uint8_t remote_name_page_scan_repetition_mode; 782 uint8_t remote_name_state; // see hci.c for state defines 783 784 bd_addr_t gap_pairing_addr; 785 uint8_t gap_pairing_state; // see hci.c for state defines 786 union { 787 const char * gap_pairing_pin; 788 uint32_t gap_pairing_passkey; 789 } gap_pairing_input; 790 791 uint16_t sco_voice_setting; 792 uint16_t sco_voice_setting_active; 793 794 uint8_t loopback_mode; 795 796 // buffer for single connection decline 797 uint8_t decline_reason; 798 bd_addr_t decline_addr; 799 800 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 801 uint8_t host_completed_packets; 802 #endif 803 804 #ifdef ENABLE_BLE 805 uint8_t le_own_addr_type; 806 bd_addr_t le_random_address; 807 uint8_t le_random_address_set; 808 #endif 809 810 #ifdef ENABLE_LE_CENTRAL 811 uint8_t le_scanning_enabled; 812 uint8_t le_scanning_active; 813 814 le_connecting_state_t le_connecting_state; 815 816 // buffer for le scan type command - 0xff not set 817 uint8_t le_scan_type; 818 uint16_t le_scan_interval; 819 uint16_t le_scan_window; 820 821 // LE Whitelist Management 822 uint8_t le_whitelist_capacity; 823 btstack_linked_list_t le_whitelist; 824 825 // Connection parameters 826 uint16_t le_connection_interval_min; 827 uint16_t le_connection_interval_max; 828 uint16_t le_connection_latency; 829 uint16_t le_supervision_timeout; 830 uint16_t le_minimum_ce_length; 831 uint16_t le_maximum_ce_length; 832 uint16_t le_connection_scan_interval; 833 uint16_t le_connection_scan_window; 834 #endif 835 836 le_connection_parameter_range_t le_connection_parameter_range; 837 838 #ifdef ENABLE_LE_PERIPHERAL 839 uint8_t * le_advertisements_data; 840 uint8_t le_advertisements_data_len; 841 842 uint8_t * le_scan_response_data; 843 uint8_t le_scan_response_data_len; 844 845 uint8_t le_advertisements_active; 846 uint8_t le_advertisements_enabled; 847 uint8_t le_advertisements_todo; 848 849 uint16_t le_advertisements_interval_min; 850 uint16_t le_advertisements_interval_max; 851 uint8_t le_advertisements_type; 852 uint8_t le_advertisements_direct_address_type; 853 uint8_t le_advertisements_channel_map; 854 uint8_t le_advertisements_filter_policy; 855 bd_addr_t le_advertisements_direct_address; 856 857 uint8_t le_max_number_peripheral_connections; 858 #endif 859 860 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 861 // LE Data Length 862 uint16_t le_supported_max_tx_octets; 863 uint16_t le_supported_max_tx_time; 864 #endif 865 866 // custom BD ADDR 867 bd_addr_t custom_bd_addr; 868 uint8_t custom_bd_addr_set; 869 870 #ifdef ENABLE_CLASSIC 871 uint8_t master_slave_policy; 872 #endif 873 874 // address and address_type of active create connection command (ACL, SCO, LE) 875 bd_addr_t outgoing_addr; 876 bd_addr_type_t outgoing_addr_type; 877 878 } hci_stack_t; 879 880 881 /* API_START */ 882 883 884 // HCI init and configuration 885 886 887 /** 888 * @brief Set up HCI. Needs to be called before any other function. 889 */ 890 void hci_init(const hci_transport_t *transport, const void *config); 891 892 /** 893 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information. 894 */ 895 void hci_set_chipset(const btstack_chipset_t *chipset_driver); 896 897 /** 898 * @brief Configure Bluetooth hardware control. Has to be called before power on. 899 */ 900 void hci_set_control(const btstack_control_t *hardware_control); 901 902 /** 903 * @brief Configure Bluetooth hardware control. Has to be called before power on. 904 */ 905 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db); 906 907 /** 908 * @brief Set callback for Bluetooth Hardware Error 909 */ 910 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)); 911 912 /** 913 * @brief Set Public BD ADDR - passed on to Bluetooth chipset during init if supported in bt_control_h 914 */ 915 void hci_set_bd_addr(bd_addr_t addr); 916 917 /** 918 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 919 */ 920 void hci_set_sco_voice_setting(uint16_t voice_setting); 921 922 /** 923 * @brief Get SCO Voice Setting 924 * @return current voice setting 925 */ 926 uint16_t hci_get_sco_voice_setting(void); 927 928 /** 929 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 930 * @param inquriy_mode see bluetooth_defines.h 931 */ 932 void hci_set_inquiry_mode(inquiry_mode_t mode); 933 934 /** 935 * @brief Requests the change of BTstack power mode. 936 */ 937 int hci_power_control(HCI_POWER_MODE mode); 938 939 /** 940 * @brief Shutdown HCI 941 */ 942 void hci_close(void); 943 944 945 // Callback registration 946 947 948 /** 949 * @brief Add event packet handler. 950 */ 951 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler); 952 953 /** 954 * @brief Registers a packet handler for ACL data. Used by L2CAP 955 */ 956 void hci_register_acl_packet_handler(btstack_packet_handler_t handler); 957 958 /** 959 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 960 */ 961 void hci_register_sco_packet_handler(btstack_packet_handler_t handler); 962 963 964 // Sending HCI Commands 965 966 /** 967 * @brief Check if CMD packet can be sent to controller 968 */ 969 int hci_can_send_command_packet_now(void); 970 971 /** 972 * @brief Creates and sends HCI command packets based on a template and a list of parameters. Will return error if outgoing data buffer is occupied. 973 */ 974 int hci_send_cmd(const hci_cmd_t *cmd, ...); 975 976 977 // Sending SCO Packets 978 979 /** @brief Get SCO packet length for current SCO Voice setting 980 * @note Using SCO packets of the exact length is required for USB transfer 981 * @return Length of SCO packets in bytes (not audio frames) incl. 3 byte header 982 */ 983 int hci_get_sco_packet_length(void); 984 985 /** 986 * @brief Request emission of HCI_EVENT_SCO_CAN_SEND_NOW as soon as possible 987 * @note HCI_EVENT_SCO_CAN_SEND_NOW might be emitted during call to this function 988 * so packet handler should be ready to handle it 989 */ 990 void hci_request_sco_can_send_now_event(void); 991 992 /** 993 * @brief Check HCI packet buffer and if SCO packet can be sent to controller 994 */ 995 int hci_can_send_sco_packet_now(void); 996 997 /** 998 * @brief Check if SCO packet can be sent to controller 999 */ 1000 int hci_can_send_prepared_sco_packet_now(void); 1001 1002 /** 1003 * @brief Send SCO packet prepared in HCI packet buffer 1004 */ 1005 int hci_send_sco_packet_buffer(int size); 1006 1007 1008 // Outgoing packet buffer, also used for SCO packets 1009 // see hci_can_send_prepared_sco_packet_now amn hci_send_sco_packet_buffer 1010 1011 /** 1012 * Reserves outgoing packet buffer. 1013 * @return 1 on success 1014 */ 1015 int hci_reserve_packet_buffer(void); 1016 1017 /** 1018 * Get pointer for outgoing packet buffer 1019 */ 1020 uint8_t* hci_get_outgoing_packet_buffer(void); 1021 1022 /** 1023 * Release outgoing packet buffer\ 1024 * @note only called instead of hci_send_preparared 1025 */ 1026 void hci_release_packet_buffer(void); 1027 1028 /** 1029 * @brief Sets the master/slave policy 1030 * @param policy (0: attempt to become master, 1: let connecting device decide) 1031 */ 1032 void hci_set_master_slave_policy(uint8_t policy); 1033 1034 /* API_END */ 1035 1036 1037 /** 1038 * va_list version of hci_send_cmd, call hci_send_cmd_packet 1039 */ 1040 int hci_send_cmd_va_arg(const hci_cmd_t *cmd, va_list argtr); 1041 1042 /** 1043 * Get connection iterator. Only used by l2cap.c and sm.c 1044 */ 1045 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it); 1046 1047 /** 1048 * Get internal hci_connection_t for given handle. Used by L2CAP, SM, daemon 1049 */ 1050 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 1051 1052 /** 1053 * Get internal hci_connection_t for given Bluetooth addres. Called by L2CAP 1054 */ 1055 hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t addr, bd_addr_type_t addr_type); 1056 1057 /** 1058 * Check if outgoing packet buffer is reserved. Used for internal checks in l2cap.c 1059 */ 1060 int hci_is_packet_buffer_reserved(void); 1061 1062 /** 1063 * Check hci packet buffer is free and a classic acl packet can be sent to controller 1064 */ 1065 int hci_can_send_acl_classic_packet_now(void); 1066 1067 /** 1068 * Check hci packet buffer is free and an LE acl packet can be sent to controller 1069 */ 1070 int hci_can_send_acl_le_packet_now(void); 1071 1072 /** 1073 * Check hci packet buffer is free and an acl packet for the given handle can be sent to controller 1074 */ 1075 int hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 1076 1077 /** 1078 * Check if acl packet for the given handle can be sent to controller 1079 */ 1080 int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 1081 1082 /** 1083 * Send acl packet prepared in hci packet buffer 1084 */ 1085 int hci_send_acl_packet_buffer(int size); 1086 1087 /** 1088 * Check if authentication is active. It delays automatic disconnect while no L2CAP connection 1089 * Called by l2cap. 1090 */ 1091 int hci_authentication_active_for_handle(hci_con_handle_t handle); 1092 1093 /** 1094 * Get maximal ACL Classic data packet length based on used buffer size. Called by L2CAP 1095 */ 1096 uint16_t hci_max_acl_data_packet_length(void); 1097 1098 /** 1099 * Get supported packet types. Called by L2CAP 1100 */ 1101 uint16_t hci_usable_acl_packet_types(void); 1102 1103 /** 1104 * Check if ACL packets marked as non flushable can be sent. Called by L2CAP 1105 */ 1106 int hci_non_flushable_packet_boundary_flag_supported(void); 1107 1108 /** 1109 * Check if extended SCO Link is supported 1110 */ 1111 int hci_extended_sco_link_supported(void); 1112 1113 /** 1114 * Check if SSP is supported on both sides. Called by L2CAP 1115 */ 1116 int gap_ssp_supported_on_both_sides(hci_con_handle_t handle); 1117 1118 /** 1119 * Disconn because of security block. Called by L2CAP 1120 */ 1121 void hci_disconnect_security_block(hci_con_handle_t con_handle); 1122 1123 /** 1124 * Query if remote side supports eSCO 1125 */ 1126 int hci_remote_esco_supported(hci_con_handle_t con_handle); 1127 1128 /** 1129 * Emit current HCI state. Called by daemon 1130 */ 1131 void hci_emit_state(void); 1132 1133 /** 1134 * Send complete CMD packet. Called by daemon and hci_send_cmd_va_arg 1135 * @returns 0 if command was successfully sent to HCI Transport layer 1136 */ 1137 int hci_send_cmd_packet(uint8_t *packet, int size); 1138 1139 /** 1140 * Disconnect all HCI connections. Called by daemon 1141 */ 1142 void hci_disconnect_all(void); 1143 1144 /** 1145 * Get number of free acl slots for packets of given handle. Called by daemon 1146 */ 1147 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 1148 1149 /** 1150 * @brief Set Advertisement Parameters 1151 * @param adv_int_min 1152 * @param adv_int_max 1153 * @param adv_type 1154 * @param direct_address_type 1155 * @param direct_address 1156 * @param channel_map 1157 * @param filter_policy 1158 * 1159 * @note internal use. use gap_advertisements_set_params from gap.h instead. 1160 */ 1161 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 1162 uint8_t direct_address_typ, bd_addr_t direct_address, uint8_t channel_map, uint8_t filter_policy); 1163 1164 /** 1165 * 1166 * @note internal use. use gap_random_address_set_mode from gap.h instead. 1167 */ 1168 void hci_le_set_own_address_type(uint8_t own_address_type); 1169 1170 /** 1171 * @brief Get Manufactured 1172 * @return manufacturer id 1173 */ 1174 uint16_t hci_get_manufacturer(void); 1175 1176 // Only for PTS testing 1177 1178 /** 1179 * Disable automatic L2CAP disconnect if no L2CAP connection is established 1180 */ 1181 void hci_disable_l2cap_timeout_check(void); 1182 1183 /** 1184 * Get state 1185 */ 1186 HCI_STATE hci_get_state(void); 1187 1188 #if defined __cplusplus 1189 } 1190 #endif 1191 1192 #endif // __HCI_H 1193