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 #include "btstack_run_loop.h" 59 60 #ifdef ENABLE_BLE 61 #include "ble/att_db.h" 62 #endif 63 64 #include <stdint.h> 65 #include <stdlib.h> 66 #include <stdarg.h> 67 68 #if defined __cplusplus 69 extern "C" { 70 #endif 71 72 // packet buffer sizes 73 74 // Max HCI Command LE payload size: 75 // 64 from LE Generate DHKey command 76 // 32 from LE Encrypt command 77 #if defined(ENABLE_LE_SECURE_CONNECTIONS) && !defined(ENABLE_MICRO_ECC_FOR_LE_SECURE_CONNECTIONS) 78 #define HCI_CMD_PAYLOAD_SIZE_LE 64 79 #else 80 #define HCI_CMD_PAYLOAD_SIZE_LE 32 81 #endif 82 83 // HCI_ACL_PAYLOAD_SIZE is configurable and defined in config.h 84 // addition byte in even to terminate remote name request with '\0' 85 #define HCI_EVENT_BUFFER_SIZE (HCI_EVENT_HEADER_SIZE + HCI_EVENT_PAYLOAD_SIZE + 1) 86 87 #ifdef ENABLE_CLASSIC 88 #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE) 89 #else 90 #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE_LE) 91 #endif 92 93 #define HCI_ACL_BUFFER_SIZE (HCI_ACL_HEADER_SIZE + HCI_ACL_PAYLOAD_SIZE) 94 95 // size of hci incoming buffer, big enough for event or acl packet without H4 packet type 96 #ifdef HCI_INCOMING_PACKET_BUFFER_SIZE 97 #if HCI_INCOMING_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE 98 #error HCI_INCOMING_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE 99 #endif 100 #if HCI_INCOMING_PACKET_BUFFER_SIZE < HCI_EVENT_BUFFER_SIZE 101 #error HCI_INCOMING_PACKET_BUFFER_SIZE must be equal or larger than HCI_EVENT_BUFFER_SIZE 102 #endif 103 #else 104 #if HCI_ACL_BUFFER_SIZE > HCI_EVENT_BUFFER_SIZE 105 #define HCI_INCOMING_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE 106 #else 107 #define HCI_INCOMING_PACKET_BUFFER_SIZE HCI_EVENT_BUFFER_SIZE 108 #endif 109 #endif 110 111 // size of hci outgoing buffer, big enough for command or acl packet without H4 packet type 112 #ifdef HCI_OUTGOING_PACKET_BUFFER_SIZE 113 #if HCI_OUTGOING_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE 114 #error HCI_OUTGOING_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE 115 #endif 116 #if HCI_OUTGOING_PACKET_BUFFER_SIZE < HCI_CMD_BUFFER_SIZE 117 #error HCI_OUTGOING_PACKET_BUFFER_SIZE must be equal or larger than HCI_CMD_BUFFER_SIZE 118 #endif 119 #else 120 #if HCI_ACL_BUFFER_SIZE > HCI_CMD_BUFFER_SIZE 121 #define HCI_OUTGOING_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE 122 #else 123 #define HCI_OUTGOING_PACKET_BUFFER_SIZE HCI_CMD_BUFFER_SIZE 124 #endif 125 #endif 126 127 // additional pre-buffer space for packets to Bluetooth module, for now, used for HCI Transport H4 DMA 128 #ifndef HCI_OUTGOING_PRE_BUFFER_SIZE 129 #ifdef HAVE_HOST_CONTROLLER_API 130 #define HCI_OUTGOING_PRE_BUFFER_SIZE 0 131 #else 132 #define HCI_OUTGOING_PRE_BUFFER_SIZE 1 133 #endif 134 #endif 135 136 // BNEP may uncompress the IP Header by 16 bytes, GATT Client requires two additional bytes for long characteristic reads 137 #ifndef HCI_INCOMING_PRE_BUFFER_SIZE 138 #ifdef ENABLE_CLASSIC 139 #define HCI_INCOMING_PRE_BUFFER_SIZE (16 - HCI_ACL_HEADER_SIZE - 4) 140 #else 141 #define HCI_INCOMING_PRE_BUFFER_SIZE 2 142 #endif 143 #endif 144 145 // packet header sizes 146 #define HCI_CMD_HEADER_SIZE 3 147 #define HCI_ACL_HEADER_SIZE 4 148 #define HCI_SCO_HEADER_SIZE 3 149 #define HCI_EVENT_HEADER_SIZE 2 150 151 #define HCI_EVENT_PAYLOAD_SIZE 255 152 #define HCI_CMD_PAYLOAD_SIZE 255 153 154 // 155 #define IS_COMMAND(packet, command) ( little_endian_read_16(packet,0) == command.opcode ) 156 157 // check if command complete event for given command 158 #define HCI_EVENT_IS_COMMAND_COMPLETE(event,cmd) ( (event[0] == HCI_EVENT_COMMAND_COMPLETE) && (little_endian_read_16(event,3) == cmd.opcode) ) 159 #define HCI_EVENT_IS_COMMAND_STATUS(event,cmd) ( (event[0] == HCI_EVENT_COMMAND_STATUS) && (little_endian_read_16(event,4) == cmd.opcode) ) 160 161 // Code+Len=2, Pkts+Opcode=3; total=5 162 #define OFFSET_OF_DATA_IN_COMMAND_COMPLETE 5 163 164 // ACL Packet 165 #define READ_ACL_CONNECTION_HANDLE( buffer ) ( little_endian_read_16(buffer,0) & 0x0fff) 166 #define READ_SCO_CONNECTION_HANDLE( buffer ) ( little_endian_read_16(buffer,0) & 0x0fff) 167 #define READ_ACL_FLAGS( buffer ) ( buffer[1] >> 4 ) 168 #define READ_ACL_LENGTH( buffer ) (little_endian_read_16(buffer, 2)) 169 170 // Sneak peak into L2CAP Packet 171 #define READ_L2CAP_LENGTH(buffer) ( little_endian_read_16(buffer, 4)) 172 #define READ_L2CAP_CHANNEL_ID(buffer) ( little_endian_read_16(buffer, 6)) 173 174 /** 175 * LE connection parameter update state 176 */ 177 178 typedef enum { 179 CON_PARAMETER_UPDATE_NONE, 180 // L2CAP 181 CON_PARAMETER_UPDATE_SEND_REQUEST, 182 CON_PARAMETER_UPDATE_SEND_RESPONSE, 183 CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS, 184 CON_PARAMETER_UPDATE_DENY, 185 // HCI - in respnose to HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST 186 CON_PARAMETER_UPDATE_REPLY, 187 CON_PARAMETER_UPDATE_NEGATIVE_REPLY, 188 } le_con_parameter_update_state_t; 189 190 // Authentication flags 191 typedef enum { 192 AUTH_FLAGS_NONE = 0x0000, 193 RECV_LINK_KEY_REQUEST = 0x0001, 194 HANDLE_LINK_KEY_REQUEST = 0x0002, 195 SENT_LINK_KEY_REPLY = 0x0004, 196 SENT_LINK_KEY_NEGATIVE_REQUEST = 0x0008, 197 RECV_LINK_KEY_NOTIFICATION = 0x0010, 198 DENY_PIN_CODE_REQUEST = 0x0040, 199 RECV_IO_CAPABILITIES_REQUEST = 0x0080, 200 SEND_IO_CAPABILITIES_REPLY = 0x0100, 201 SEND_USER_CONFIRM_REPLY = 0x0200, 202 SEND_USER_PASSKEY_REPLY = 0x0400, 203 204 // pairing status 205 LEGACY_PAIRING_ACTIVE = 0x2000, 206 SSP_PAIRING_ACTIVE = 0x4000, 207 208 // connection status 209 CONNECTION_ENCRYPTED = 0x8000, 210 211 // errands 212 READ_RSSI = 0x10000, 213 WRITE_SUPERVISION_TIMEOUT = 0x20000, 214 215 } hci_authentication_flags_t; 216 217 /** 218 * Connection State 219 */ 220 typedef enum { 221 SEND_CREATE_CONNECTION = 0, 222 SENT_CREATE_CONNECTION, 223 SEND_CANCEL_CONNECTION, 224 SENT_CANCEL_CONNECTION, 225 RECEIVED_CONNECTION_REQUEST, 226 ACCEPTED_CONNECTION_REQUEST, 227 REJECTED_CONNECTION_REQUEST, 228 OPEN, 229 SEND_DISCONNECT, 230 SENT_DISCONNECT, 231 RECEIVED_DISCONNECTION_COMPLETE 232 } CONNECTION_STATE; 233 234 // bonding flags 235 enum { 236 BONDING_REQUEST_REMOTE_FEATURES = 0x01, 237 BONDING_RECEIVED_REMOTE_FEATURES = 0x02, 238 BONDING_REMOTE_SUPPORTS_SSP = 0x04, 239 BONDING_DISCONNECT_SECURITY_BLOCK = 0x08, 240 BONDING_DISCONNECT_DEDICATED_DONE = 0x10, 241 BONDING_SEND_AUTHENTICATE_REQUEST = 0x20, 242 BONDING_SEND_ENCRYPTION_REQUEST = 0x40, 243 BONDING_SEND_READ_ENCRYPTION_KEY_SIZE = 0x80, 244 BONDING_DEDICATED = 0x100, 245 BONDING_EMIT_COMPLETE_ON_DISCONNECT = 0x200 246 }; 247 248 typedef enum { 249 BLUETOOTH_OFF = 1, 250 BLUETOOTH_ON, 251 BLUETOOTH_ACTIVE 252 } BLUETOOTH_STATE; 253 254 typedef enum { 255 LE_CONNECTING_IDLE, 256 LE_CONNECTING_DIRECT, 257 LE_CONNECTING_WHITELIST, 258 } le_connecting_state_t; 259 260 #ifdef ENABLE_BLE 261 262 // 263 // SM internal types and globals 264 // 265 266 typedef enum { 267 268 // general states 269 SM_GENERAL_IDLE, 270 SM_GENERAL_SEND_PAIRING_FAILED, 271 SM_GENERAL_TIMEOUT, // no other security messages are exchanged 272 273 // Phase 1: Pairing Feature Exchange 274 SM_PH1_W4_USER_RESPONSE, 275 276 // Phase 2: Authenticating and Encrypting 277 278 // get random number for use as TK Passkey if we show it 279 SM_PH2_GET_RANDOM_TK, 280 SM_PH2_W4_RANDOM_TK, 281 282 // get local random number for confirm c1 283 SM_PH2_C1_GET_RANDOM_A, 284 SM_PH2_C1_W4_RANDOM_A, 285 SM_PH2_C1_GET_RANDOM_B, 286 SM_PH2_C1_W4_RANDOM_B, 287 288 // calculate confirm value for local side 289 SM_PH2_C1_GET_ENC_A, 290 SM_PH2_C1_W4_ENC_A, 291 292 // calculate confirm value for remote side 293 SM_PH2_C1_GET_ENC_C, 294 SM_PH2_C1_W4_ENC_C, 295 296 SM_PH2_C1_SEND_PAIRING_CONFIRM, 297 SM_PH2_SEND_PAIRING_RANDOM, 298 299 // calc STK 300 SM_PH2_CALC_STK, 301 SM_PH2_W4_STK, 302 303 SM_PH2_W4_CONNECTION_ENCRYPTED, 304 305 // Phase 3: Transport Specific Key Distribution 306 // calculate DHK, Y, EDIV, and LTK 307 SM_PH3_Y_GET_ENC, 308 SM_PH3_Y_W4_ENC, 309 SM_PH3_LTK_GET_ENC, 310 311 // exchange keys 312 SM_PH3_DISTRIBUTE_KEYS, 313 SM_PH3_RECEIVE_KEYS, 314 315 // RESPONDER ROLE 316 SM_RESPONDER_IDLE, 317 SM_RESPONDER_SEND_SECURITY_REQUEST, 318 SM_RESPONDER_PH0_RECEIVED_LTK_REQUEST, 319 SM_RESPONDER_PH0_RECEIVED_LTK_W4_IRK, 320 SM_RESPONDER_PH0_SEND_LTK_REQUESTED_NEGATIVE_REPLY, 321 SM_RESPONDER_PH1_W4_PAIRING_REQUEST, 322 SM_RESPONDER_PH1_PAIRING_REQUEST_RECEIVED, 323 SM_RESPONDER_PH1_SEND_PAIRING_RESPONSE, 324 SM_RESPONDER_PH1_W4_PAIRING_CONFIRM, 325 SM_RESPONDER_PH2_W4_PAIRING_RANDOM, 326 SM_RESPONDER_PH2_W4_LTK_REQUEST, 327 SM_RESPONDER_PH2_SEND_LTK_REPLY, 328 329 // Phase 4: re-establish previously distributed LTK 330 SM_RESPONDER_PH4_Y_GET_ENC, 331 SM_RESPONDER_PH4_Y_W4_ENC, 332 SM_RESPONDER_PH4_SEND_LTK_REPLY, 333 334 // INITITIATOR ROLE 335 SM_INITIATOR_CONNECTED, 336 SM_INITIATOR_PH0_HAS_LTK, 337 SM_INITIATOR_PH0_SEND_START_ENCRYPTION, 338 SM_INITIATOR_PH0_W4_CONNECTION_ENCRYPTED, 339 SM_INITIATOR_PH1_W2_SEND_PAIRING_REQUEST, 340 SM_INITIATOR_PH1_SEND_PAIRING_REQUEST, 341 SM_INITIATOR_PH1_W4_PAIRING_RESPONSE, 342 SM_INITIATOR_PH2_W4_PAIRING_CONFIRM, 343 SM_INITIATOR_PH2_W4_PAIRING_RANDOM, 344 SM_INITIATOR_PH3_SEND_START_ENCRYPTION, 345 346 // LE Secure Connections 347 SM_SC_RECEIVED_LTK_REQUEST, 348 SM_SC_SEND_PUBLIC_KEY_COMMAND, 349 SM_SC_W4_PUBLIC_KEY_COMMAND, 350 SM_SC_W4_LOCAL_NONCE, 351 SM_SC_W2_CMAC_FOR_CONFIRMATION, 352 SM_SC_W4_CMAC_FOR_CONFIRMATION, 353 SM_SC_SEND_CONFIRMATION, 354 SM_SC_W2_CMAC_FOR_CHECK_CONFIRMATION, 355 SM_SC_W4_CMAC_FOR_CHECK_CONFIRMATION, 356 SM_SC_W4_CONFIRMATION, 357 SM_SC_SEND_PAIRING_RANDOM, 358 SM_SC_W4_PAIRING_RANDOM, 359 SM_SC_W2_CALCULATE_G2, 360 SM_SC_W4_CALCULATE_G2, 361 SM_SC_W4_CALCULATE_DHKEY, 362 SM_SC_W2_CALCULATE_F5_SALT, 363 SM_SC_W4_CALCULATE_F5_SALT, 364 SM_SC_W2_CALCULATE_F5_MACKEY, 365 SM_SC_W4_CALCULATE_F5_MACKEY, 366 SM_SC_W2_CALCULATE_F5_LTK, 367 SM_SC_W4_CALCULATE_F5_LTK, 368 SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK, 369 SM_SC_W4_CALCULATE_F6_FOR_DHKEY_CHECK, 370 SM_SC_W2_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 371 SM_SC_W4_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 372 SM_SC_W4_USER_RESPONSE, 373 SM_SC_SEND_DHKEY_CHECK_COMMAND, 374 SM_SC_W4_DHKEY_CHECK_COMMAND, 375 SM_SC_W4_LTK_REQUEST_SC, 376 SM_SC_W2_CALCULATE_H6_ILK, 377 SM_SC_W4_CALCULATE_H6_ILK, 378 SM_SC_W2_CALCULATE_H6_BR_EDR_LINK_KEY, 379 SM_SC_W4_CALCULATE_H6_BR_EDR_LINK_KEY, 380 } security_manager_state_t; 381 382 typedef enum { 383 IRK_LOOKUP_IDLE, 384 IRK_LOOKUP_W4_READY, 385 IRK_LOOKUP_STARTED, 386 IRK_LOOKUP_SUCCEEDED, 387 IRK_LOOKUP_FAILED 388 } irk_lookup_state_t; 389 390 typedef uint8_t sm_pairing_packet_t[7]; 391 392 // connection info available as long as connection exists 393 typedef struct sm_connection { 394 hci_con_handle_t sm_handle; 395 uint8_t sm_role; // 0 - IamMaster, 1 = IamSlave 396 uint8_t sm_security_request_received; 397 uint8_t sm_pairing_requested; 398 uint8_t sm_peer_addr_type; 399 bd_addr_t sm_peer_address; 400 security_manager_state_t sm_engine_state; 401 irk_lookup_state_t sm_irk_lookup_state; 402 uint8_t sm_connection_encrypted; 403 uint8_t sm_connection_authenticated; // [0..1] 404 uint8_t sm_connection_sc; 405 uint8_t sm_actual_encryption_key_size; 406 sm_pairing_packet_t sm_m_preq; // only used during c1 407 authorization_state_t sm_connection_authorization_state; 408 uint16_t sm_local_ediv; 409 uint8_t sm_local_rand[8]; 410 int sm_le_db_index; 411 } sm_connection_t; 412 413 // 414 // ATT Server 415 // 416 417 // max ATT request matches L2CAP PDU -- allow to use smaller buffer 418 #ifndef ATT_REQUEST_BUFFER_SIZE 419 #define ATT_REQUEST_BUFFER_SIZE HCI_ACL_PAYLOAD_SIZE 420 #endif 421 422 typedef enum { 423 ATT_SERVER_IDLE, 424 ATT_SERVER_REQUEST_RECEIVED, 425 ATT_SERVER_W4_SIGNED_WRITE_VALIDATION, 426 ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED, 427 ATT_SERVER_RESPONSE_PENDING, 428 } att_server_state_t; 429 430 typedef struct { 431 att_server_state_t state; 432 433 uint8_t peer_addr_type; 434 bd_addr_t peer_address; 435 436 int ir_le_device_db_index; 437 uint8_t ir_lookup_active; 438 uint8_t pairing_active; 439 440 int value_indication_handle; 441 btstack_timer_source_t value_indication_timer; 442 443 att_connection_t connection; 444 445 btstack_linked_list_t notification_requests; 446 btstack_linked_list_t indication_requests; 447 448 #ifdef ENABLE_GATT_OVER_CLASSIC 449 uint16_t l2cap_cid; 450 #endif 451 452 uint16_t request_size; 453 uint8_t request_buffer[ATT_REQUEST_BUFFER_SIZE]; 454 455 } att_server_t; 456 457 #endif 458 459 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 460 typedef enum { 461 L2CAP_INFORMATION_STATE_IDLE = 0, 462 L2CAP_INFORMATION_STATE_W2_SEND_EXTENDED_FEATURE_REQUEST, 463 L2CAP_INFORMATION_STATE_W4_EXTENDED_FEATURE_RESPONSE, 464 L2CAP_INFORMATION_STATE_DONE 465 } l2cap_information_state_t; 466 467 typedef struct { 468 l2cap_information_state_t information_state; 469 uint16_t extended_feature_mask; 470 } l2cap_state_t; 471 #endif 472 473 // 474 typedef struct { 475 // linked list - assert: first field 476 btstack_linked_item_t item; 477 478 // remote side 479 bd_addr_t address; 480 481 // module handle 482 hci_con_handle_t con_handle; 483 484 // le public, le random, classic 485 bd_addr_type_t address_type; 486 487 // role: 0 - master, 1 - slave 488 uint8_t role; 489 490 // connection state 491 CONNECTION_STATE state; 492 493 // bonding 494 uint16_t bonding_flags; 495 uint8_t bonding_status; 496 497 // encryption key size (in octets) 498 uint8_t encryption_key_size; 499 500 // requested security level 501 gap_security_level_t requested_security_level; 502 503 // 504 link_key_type_t link_key_type; 505 506 // remote supported features 507 uint8_t remote_supported_feature_eSCO; 508 509 #ifdef ENABLE_CLASSIC 510 // connection mode, default ACL_CONNECTION_MODE_ACTIVE 511 uint8_t connection_mode; 512 513 // enter/exit sniff mode requests 514 uint16_t sniff_min_interval; // 0: idle, 0xffff exit sniff, else enter sniff 515 uint16_t sniff_max_interval; 516 uint16_t sniff_attempt; 517 uint16_t sniff_timeout; 518 519 // track SCO rx event 520 uint32_t sco_rx_ms; 521 uint8_t sco_rx_count; 522 uint8_t sco_rx_valid; 523 524 // generate sco can send now based on received packets, using timeout below 525 uint8_t sco_tx_ready; 526 527 btstack_timer_source_t timeout_sco; 528 #endif /* ENABLE_CLASSIC */ 529 530 // authentication and other errands 531 uint32_t authentication_flags; 532 533 btstack_timer_source_t timeout; 534 535 // timeout in system ticks (HAVE_EMBEDDED_TICK) or milliseconds (HAVE_EMBEDDED_TIME_MS) 536 uint32_t timestamp; 537 538 // ACL packet recombination - PRE_BUFFER + ACL Header + ACL payload 539 uint8_t acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + 4 + HCI_ACL_BUFFER_SIZE]; 540 uint16_t acl_recombination_pos; 541 uint16_t acl_recombination_length; 542 543 544 // number packets sent to controller 545 uint8_t num_packets_sent; 546 547 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 548 uint8_t num_packets_completed; 549 #endif 550 551 // LE Connection parameter update 552 le_con_parameter_update_state_t le_con_parameter_update_state; 553 uint8_t le_con_param_update_identifier; 554 uint16_t le_conn_interval_min; 555 uint16_t le_conn_interval_max; 556 uint16_t le_conn_latency; 557 uint16_t le_supervision_timeout; 558 559 #ifdef ENABLE_BLE 560 uint16_t le_connection_interval; 561 562 // LE PHY Update via set phy command 563 uint8_t le_phy_update_all_phys; // 0xff for idle 564 uint8_t le_phy_update_tx_phys; 565 uint8_t le_phy_update_rx_phys; 566 int8_t le_phy_update_phy_options; 567 568 // LE Security Manager 569 sm_connection_t sm_connection; 570 571 // ATT Server 572 att_server_t att_server; 573 #endif 574 575 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 576 l2cap_state_t l2cap_state; 577 #endif 578 579 } hci_connection_t; 580 581 582 /** 583 * HCI Inititizlization State Machine 584 */ 585 typedef enum hci_init_state{ 586 HCI_INIT_SEND_RESET = 0, 587 HCI_INIT_W4_SEND_RESET, 588 HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION, 589 HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION, 590 HCI_INIT_SEND_READ_LOCAL_NAME, 591 HCI_INIT_W4_SEND_READ_LOCAL_NAME, 592 593 HCI_INIT_SEND_BAUD_CHANGE, 594 HCI_INIT_W4_SEND_BAUD_CHANGE, 595 HCI_INIT_CUSTOM_INIT, 596 HCI_INIT_W4_CUSTOM_INIT, 597 HCI_INIT_SEND_RESET_CSR_WARM_BOOT, 598 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT, 599 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET, 600 HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY, 601 602 HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS, 603 HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS, 604 605 HCI_INIT_SEND_BAUD_CHANGE_BCM, 606 HCI_INIT_W4_SEND_BAUD_CHANGE_BCM, 607 608 HCI_INIT_SET_BD_ADDR, 609 HCI_INIT_W4_SET_BD_ADDR, 610 611 HCI_INIT_SEND_RESET_ST_WARM_BOOT, 612 HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT, 613 614 HCI_INIT_READ_BD_ADDR, 615 HCI_INIT_W4_READ_BD_ADDR, 616 617 HCI_INIT_READ_BUFFER_SIZE, 618 HCI_INIT_W4_READ_BUFFER_SIZE, 619 HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES, 620 HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES, 621 622 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 623 HCI_INIT_HOST_BUFFER_SIZE, 624 HCI_INIT_W4_HOST_BUFFER_SIZE, 625 HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 626 HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 627 #endif 628 629 HCI_INIT_SET_EVENT_MASK, 630 HCI_INIT_W4_SET_EVENT_MASK, 631 632 HCI_INIT_WRITE_SIMPLE_PAIRING_MODE, 633 HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE, 634 HCI_INIT_WRITE_PAGE_TIMEOUT, 635 HCI_INIT_W4_WRITE_PAGE_TIMEOUT, 636 HCI_INIT_WRITE_DEFAULT_LINK_POLICY_SETTING, 637 HCI_INIT_W4_WRITE_DEFAULT_LINK_POLICY_SETTING, 638 HCI_INIT_WRITE_CLASS_OF_DEVICE, 639 HCI_INIT_W4_WRITE_CLASS_OF_DEVICE, 640 HCI_INIT_WRITE_LOCAL_NAME, 641 HCI_INIT_W4_WRITE_LOCAL_NAME, 642 HCI_INIT_WRITE_EIR_DATA, 643 HCI_INIT_W4_WRITE_EIR_DATA, 644 HCI_INIT_WRITE_INQUIRY_MODE, 645 HCI_INIT_W4_WRITE_INQUIRY_MODE, 646 HCI_INIT_WRITE_SCAN_ENABLE, 647 HCI_INIT_W4_WRITE_SCAN_ENABLE, 648 649 // SCO over HCI 650 HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 651 HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 652 HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 653 HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 654 655 // SCO over HCI Broadcom 656 HCI_INIT_BCM_WRITE_SCO_PCM_INT, 657 HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT, 658 659 #ifdef ENABLE_BLE 660 HCI_INIT_LE_READ_BUFFER_SIZE, 661 HCI_INIT_W4_LE_READ_BUFFER_SIZE, 662 HCI_INIT_WRITE_LE_HOST_SUPPORTED, 663 HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED, 664 HCI_INIT_LE_SET_EVENT_MASK, 665 HCI_INIT_W4_LE_SET_EVENT_MASK, 666 #endif 667 668 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 669 HCI_INIT_LE_READ_MAX_DATA_LENGTH, 670 HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH, 671 HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH, 672 HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH, 673 #endif 674 675 #ifdef ENABLE_LE_CENTRAL 676 HCI_INIT_READ_WHITE_LIST_SIZE, 677 HCI_INIT_W4_READ_WHITE_LIST_SIZE, 678 679 HCI_INIT_LE_SET_SCAN_PARAMETERS, 680 HCI_INIT_W4_LE_SET_SCAN_PARAMETERS, 681 #endif 682 683 HCI_INIT_DONE, 684 685 HCI_FALLING_ASLEEP_DISCONNECT, 686 HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE, 687 HCI_FALLING_ASLEEP_COMPLETE, 688 689 HCI_INIT_AFTER_SLEEP, 690 691 HCI_HALTING_DISCONNECT_ALL_NO_TIMER, 692 HCI_HALTING_DISCONNECT_ALL_TIMER, 693 HCI_HALTING_W4_TIMER, 694 HCI_HALTING_CLOSE, 695 696 } hci_substate_t; 697 698 enum { 699 LE_ADVERTISEMENT_TASKS_DISABLE = 1 << 0, 700 LE_ADVERTISEMENT_TASKS_SET_ADV_DATA = 1 << 1, 701 LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA = 1 << 2, 702 LE_ADVERTISEMENT_TASKS_SET_PARAMS = 1 << 3, 703 LE_ADVERTISEMENT_TASKS_ENABLE = 1 << 4, 704 }; 705 706 enum { 707 LE_WHITELIST_ON_CONTROLLER = 1 << 0, 708 LE_WHITELIST_ADD_TO_CONTROLLER = 1 << 1, 709 LE_WHITELIST_REMOVE_FROM_CONTROLLER = 1 << 2, 710 }; 711 712 typedef struct { 713 btstack_linked_item_t item; 714 bd_addr_t address; 715 bd_addr_type_t address_type; 716 uint8_t state; 717 } whitelist_entry_t; 718 719 /** 720 * main data structure 721 */ 722 typedef struct { 723 // transport component with configuration 724 const hci_transport_t * hci_transport; 725 const void * config; 726 727 // chipset driver 728 const btstack_chipset_t * chipset; 729 730 // hardware power controller 731 const btstack_control_t * control; 732 733 /* link key db */ 734 const btstack_link_key_db_t * link_key_db; 735 736 // list of existing baseband connections 737 btstack_linked_list_t connections; 738 739 /* callback to L2CAP layer */ 740 btstack_packet_handler_t acl_packet_handler; 741 742 /* callback for SCO data */ 743 btstack_packet_handler_t sco_packet_handler; 744 745 /* callbacks for events */ 746 btstack_linked_list_t event_handlers; 747 748 #ifdef ENABLE_CLASSIC 749 /* callback for reject classic connection */ 750 int (*gap_classic_accept_callback)(bd_addr_t addr); 751 #endif 752 753 // hardware error callback 754 void (*hardware_error_callback)(uint8_t error); 755 756 // basic configuration 757 const char * local_name; 758 const uint8_t * eir_data; 759 uint32_t class_of_device; 760 bd_addr_t local_bd_addr; 761 uint8_t default_link_policy_settings; 762 uint8_t ssp_enable; 763 uint8_t ssp_io_capability; 764 uint8_t ssp_authentication_requirement; 765 uint8_t ssp_auto_accept; 766 inquiry_mode_t inquiry_mode; 767 #ifdef ENABLE_CLASSIC 768 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3, we use 16 as default 769 uint8_t gap_required_encyrption_key_size; 770 uint16_t link_supervision_timeout; 771 #endif 772 773 // single buffer for HCI packet assembly + additional prebuffer for H4 drivers 774 uint8_t * hci_packet_buffer; 775 uint8_t hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE + HCI_OUTGOING_PACKET_BUFFER_SIZE]; 776 uint8_t hci_packet_buffer_reserved; 777 uint16_t acl_fragmentation_pos; 778 uint16_t acl_fragmentation_total_size; 779 uint8_t acl_fragmentation_tx_active; 780 781 /* host to controller flow control */ 782 uint8_t num_cmd_packets; 783 uint8_t acl_packets_total_num; 784 uint16_t acl_data_packet_length; 785 uint8_t sco_packets_total_num; 786 uint8_t sco_data_packet_length; 787 uint8_t synchronous_flow_control_enabled; 788 uint8_t le_acl_packets_total_num; 789 uint16_t le_data_packets_length; 790 uint8_t sco_waiting_for_can_send_now; 791 uint8_t sco_can_send_now; 792 793 /* local supported features */ 794 uint8_t local_supported_features[8]; 795 796 /* local supported commands summary - complete info is 64 bytes */ 797 /* 0 - Read Buffer Size (Octet 14/bit 7) */ 798 /* 1 - Write Le Host Supported (Octet 24/bit 6) */ 799 /* 2 - Write Synchronous Flow Control Enable (Octet 10/bit 4) */ 800 /* 3 - Write Default Erroneous Data Reporting (Octet 18/bit 3) */ 801 /* 4 - LE Write Suggested Default Data Length (Octet 34/bit 0) */ 802 /* 5 - LE Read Maximum Data Length (Octet 35/bit 3) */ 803 /* 6 - LE Set Default PHY (Octet 35/bit 5) */ 804 uint8_t local_supported_commands[1]; 805 806 /* bluetooth device information from hci read local version information */ 807 // uint16_t hci_version; 808 // uint16_t hci_revision; 809 // uint16_t lmp_version; 810 uint16_t manufacturer; 811 // uint16_t lmp_subversion; 812 813 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 814 uint16_t packet_types; 815 816 817 /* hci state machine */ 818 HCI_STATE state; 819 hci_substate_t substate; 820 btstack_timer_source_t timeout; 821 btstack_chipset_result_t chipset_result; 822 823 uint16_t last_cmd_opcode; 824 825 uint8_t cmds_ready; 826 827 /* buffer for scan enable cmd - 0xff no change */ 828 uint8_t new_scan_enable_value; 829 830 uint8_t discoverable; 831 uint8_t connectable; 832 uint8_t bondable; 833 834 uint8_t inquiry_state; // see hci.c for state defines 835 836 bd_addr_t remote_name_addr; 837 uint16_t remote_name_clock_offset; 838 uint8_t remote_name_page_scan_repetition_mode; 839 uint8_t remote_name_state; // see hci.c for state defines 840 841 bd_addr_t gap_pairing_addr; 842 uint8_t gap_pairing_state; // see hci.c for state defines 843 union { 844 const char * gap_pairing_pin; 845 uint32_t gap_pairing_passkey; 846 } gap_pairing_input; 847 848 uint16_t sco_voice_setting; 849 uint16_t sco_voice_setting_active; 850 851 uint8_t loopback_mode; 852 853 // buffer for single connection decline 854 uint8_t decline_reason; 855 bd_addr_t decline_addr; 856 857 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 858 uint8_t host_completed_packets; 859 #endif 860 861 #ifdef ENABLE_BLE 862 uint8_t le_own_addr_type; 863 bd_addr_t le_random_address; 864 uint8_t le_random_address_set; 865 #endif 866 867 #ifdef ENABLE_LE_CENTRAL 868 uint8_t le_scanning_enabled; 869 uint8_t le_scanning_active; 870 871 le_connecting_state_t le_connecting_state; 872 873 // buffer for le scan type command - 0xff not set 874 uint8_t le_scan_type; 875 uint16_t le_scan_interval; 876 uint16_t le_scan_window; 877 878 // LE Whitelist Management 879 uint8_t le_whitelist_capacity; 880 btstack_linked_list_t le_whitelist; 881 882 // Connection parameters 883 uint16_t le_connection_interval_min; 884 uint16_t le_connection_interval_max; 885 uint16_t le_connection_latency; 886 uint16_t le_supervision_timeout; 887 uint16_t le_minimum_ce_length; 888 uint16_t le_maximum_ce_length; 889 uint16_t le_connection_scan_interval; 890 uint16_t le_connection_scan_window; 891 #endif 892 893 le_connection_parameter_range_t le_connection_parameter_range; 894 895 #ifdef ENABLE_LE_PERIPHERAL 896 uint8_t * le_advertisements_data; 897 uint8_t le_advertisements_data_len; 898 899 uint8_t * le_scan_response_data; 900 uint8_t le_scan_response_data_len; 901 902 uint8_t le_advertisements_active; 903 uint8_t le_advertisements_enabled; 904 uint8_t le_advertisements_todo; 905 906 uint16_t le_advertisements_interval_min; 907 uint16_t le_advertisements_interval_max; 908 uint8_t le_advertisements_type; 909 uint8_t le_advertisements_direct_address_type; 910 uint8_t le_advertisements_channel_map; 911 uint8_t le_advertisements_filter_policy; 912 bd_addr_t le_advertisements_direct_address; 913 914 uint8_t le_max_number_peripheral_connections; 915 #endif 916 917 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 918 // LE Data Length 919 uint16_t le_supported_max_tx_octets; 920 uint16_t le_supported_max_tx_time; 921 #endif 922 923 // custom BD ADDR 924 bd_addr_t custom_bd_addr; 925 uint8_t custom_bd_addr_set; 926 927 #ifdef ENABLE_CLASSIC 928 uint8_t master_slave_policy; 929 #endif 930 931 // address and address_type of active create connection command (ACL, SCO, LE) 932 bd_addr_t outgoing_addr; 933 bd_addr_type_t outgoing_addr_type; 934 } hci_stack_t; 935 936 937 /* API_START */ 938 939 940 // HCI init and configuration 941 942 943 /** 944 * @brief Set up HCI. Needs to be called before any other function. 945 */ 946 void hci_init(const hci_transport_t *transport, const void *config); 947 948 /** 949 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information. 950 */ 951 void hci_set_chipset(const btstack_chipset_t *chipset_driver); 952 953 /** 954 * @brief Configure Bluetooth hardware control. Has to be called before power on. 955 */ 956 void hci_set_control(const btstack_control_t *hardware_control); 957 958 /** 959 * @brief Configure Bluetooth hardware control. Has to be called before power on. 960 */ 961 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db); 962 963 /** 964 * @brief Set callback for Bluetooth Hardware Error 965 */ 966 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)); 967 968 /** 969 * @brief Set Public BD ADDR - passed on to Bluetooth chipset during init if supported in bt_control_h 970 */ 971 void hci_set_bd_addr(bd_addr_t addr); 972 973 /** 974 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 975 */ 976 void hci_set_sco_voice_setting(uint16_t voice_setting); 977 978 /** 979 * @brief Get SCO Voice Setting 980 * @return current voice setting 981 */ 982 uint16_t hci_get_sco_voice_setting(void); 983 984 /** 985 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 986 * @param inquriy_mode see bluetooth_defines.h 987 */ 988 void hci_set_inquiry_mode(inquiry_mode_t mode); 989 990 /** 991 * @brief Requests the change of BTstack power mode. 992 */ 993 int hci_power_control(HCI_POWER_MODE mode); 994 995 /** 996 * @brief Shutdown HCI 997 */ 998 void hci_close(void); 999 1000 1001 // Callback registration 1002 1003 1004 /** 1005 * @brief Add event packet handler. 1006 */ 1007 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler); 1008 1009 /** 1010 * @brief Registers a packet handler for ACL data. Used by L2CAP 1011 */ 1012 void hci_register_acl_packet_handler(btstack_packet_handler_t handler); 1013 1014 /** 1015 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 1016 */ 1017 void hci_register_sco_packet_handler(btstack_packet_handler_t handler); 1018 1019 1020 // Sending HCI Commands 1021 1022 /** 1023 * @brief Check if CMD packet can be sent to controller 1024 */ 1025 int hci_can_send_command_packet_now(void); 1026 1027 /** 1028 * @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. 1029 */ 1030 int hci_send_cmd(const hci_cmd_t *cmd, ...); 1031 1032 1033 // Sending SCO Packets 1034 1035 /** @brief Get SCO packet length for current SCO Voice setting 1036 * @note Using SCO packets of the exact length is required for USB transfer 1037 * @return Length of SCO packets in bytes (not audio frames) incl. 3 byte header 1038 */ 1039 int hci_get_sco_packet_length(void); 1040 1041 /** 1042 * @brief Request emission of HCI_EVENT_SCO_CAN_SEND_NOW as soon as possible 1043 * @note HCI_EVENT_SCO_CAN_SEND_NOW might be emitted during call to this function 1044 * so packet handler should be ready to handle it 1045 */ 1046 void hci_request_sco_can_send_now_event(void); 1047 1048 /** 1049 * @brief Check HCI packet buffer and if SCO packet can be sent to controller 1050 */ 1051 int hci_can_send_sco_packet_now(void); 1052 1053 /** 1054 * @brief Check if SCO packet can be sent to controller 1055 */ 1056 int hci_can_send_prepared_sco_packet_now(void); 1057 1058 /** 1059 * @brief Send SCO packet prepared in HCI packet buffer 1060 */ 1061 int hci_send_sco_packet_buffer(int size); 1062 1063 1064 // Outgoing packet buffer, also used for SCO packets 1065 // see hci_can_send_prepared_sco_packet_now amn hci_send_sco_packet_buffer 1066 1067 /** 1068 * Reserves outgoing packet buffer. 1069 * @return 1 on success 1070 */ 1071 int hci_reserve_packet_buffer(void); 1072 1073 /** 1074 * Get pointer for outgoing packet buffer 1075 */ 1076 uint8_t* hci_get_outgoing_packet_buffer(void); 1077 1078 /** 1079 * Release outgoing packet buffer\ 1080 * @note only called instead of hci_send_preparared 1081 */ 1082 void hci_release_packet_buffer(void); 1083 1084 /** 1085 * @brief Sets the master/slave policy 1086 * @param policy (0: attempt to become master, 1: let connecting device decide) 1087 */ 1088 void hci_set_master_slave_policy(uint8_t policy); 1089 1090 /* API_END */ 1091 1092 1093 /** 1094 * va_list version of hci_send_cmd, call hci_send_cmd_packet 1095 */ 1096 int hci_send_cmd_va_arg(const hci_cmd_t *cmd, va_list argtr); 1097 1098 /** 1099 * Get connection iterator. Only used by l2cap.c and sm.c 1100 */ 1101 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it); 1102 1103 /** 1104 * Get internal hci_connection_t for given handle. Used by L2CAP, SM, daemon 1105 */ 1106 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 1107 1108 /** 1109 * Get internal hci_connection_t for given Bluetooth addres. Called by L2CAP 1110 */ 1111 hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t addr, bd_addr_type_t addr_type); 1112 1113 /** 1114 * Check if outgoing packet buffer is reserved. Used for internal checks in l2cap.c 1115 */ 1116 int hci_is_packet_buffer_reserved(void); 1117 1118 /** 1119 * Check hci packet buffer is free and a classic acl packet can be sent to controller 1120 */ 1121 int hci_can_send_acl_classic_packet_now(void); 1122 1123 /** 1124 * Check hci packet buffer is free and an LE acl packet can be sent to controller 1125 */ 1126 int hci_can_send_acl_le_packet_now(void); 1127 1128 /** 1129 * Check hci packet buffer is free and an acl packet for the given handle can be sent to controller 1130 */ 1131 int hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 1132 1133 /** 1134 * Check if acl packet for the given handle can be sent to controller 1135 */ 1136 int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 1137 1138 /** 1139 * Send acl packet prepared in hci packet buffer 1140 */ 1141 int hci_send_acl_packet_buffer(int size); 1142 1143 /** 1144 * Check if authentication is active. It delays automatic disconnect while no L2CAP connection 1145 * Called by l2cap. 1146 */ 1147 int hci_authentication_active_for_handle(hci_con_handle_t handle); 1148 1149 /** 1150 * Get maximal ACL Classic data packet length based on used buffer size. Called by L2CAP 1151 */ 1152 uint16_t hci_max_acl_data_packet_length(void); 1153 1154 /** 1155 * Get supported packet types. Called by L2CAP 1156 */ 1157 uint16_t hci_usable_acl_packet_types(void); 1158 1159 /** 1160 * Check if ACL packets marked as non flushable can be sent. Called by L2CAP 1161 */ 1162 int hci_non_flushable_packet_boundary_flag_supported(void); 1163 1164 /** 1165 * Check if extended SCO Link is supported 1166 */ 1167 int hci_extended_sco_link_supported(void); 1168 1169 /** 1170 * Check if SSP is supported on both sides. Called by L2CAP 1171 */ 1172 int gap_ssp_supported_on_both_sides(hci_con_handle_t handle); 1173 1174 /** 1175 * Disconn because of security block. Called by L2CAP 1176 */ 1177 void hci_disconnect_security_block(hci_con_handle_t con_handle); 1178 1179 /** 1180 * Query if remote side supports eSCO 1181 */ 1182 int hci_remote_esco_supported(hci_con_handle_t con_handle); 1183 1184 /** 1185 * Emit current HCI state. Called by daemon 1186 */ 1187 void hci_emit_state(void); 1188 1189 /** 1190 * Send complete CMD packet. Called by daemon and hci_send_cmd_va_arg 1191 * @returns 0 if command was successfully sent to HCI Transport layer 1192 */ 1193 int hci_send_cmd_packet(uint8_t *packet, int size); 1194 1195 /** 1196 * Disconnect all HCI connections. Called by daemon 1197 */ 1198 void hci_disconnect_all(void); 1199 1200 /** 1201 * Get number of free acl slots for packets of given handle. Called by daemon 1202 */ 1203 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 1204 1205 /** 1206 * @brief Set Advertisement Parameters 1207 * @param adv_int_min 1208 * @param adv_int_max 1209 * @param adv_type 1210 * @param direct_address_type 1211 * @param direct_address 1212 * @param channel_map 1213 * @param filter_policy 1214 * 1215 * @note internal use. use gap_advertisements_set_params from gap.h instead. 1216 */ 1217 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 1218 uint8_t direct_address_typ, bd_addr_t direct_address, uint8_t channel_map, uint8_t filter_policy); 1219 1220 /** 1221 * 1222 * @note internal use. use gap_random_address_set_mode from gap.h instead. 1223 */ 1224 void hci_le_set_own_address_type(uint8_t own_address_type); 1225 1226 /** 1227 * @brief Get Manufactured 1228 * @return manufacturer id 1229 */ 1230 uint16_t hci_get_manufacturer(void); 1231 1232 /** 1233 * Defer halt. Used by btstack_crypto to allow current HCI operation to complete 1234 */ 1235 void hci_halting_defer(void); 1236 1237 // Only for PTS testing 1238 1239 /** 1240 * Disable automatic L2CAP disconnect if no L2CAP connection is established 1241 */ 1242 void hci_disable_l2cap_timeout_check(void); 1243 1244 /** 1245 * Get state 1246 */ 1247 HCI_STATE hci_get_state(void); 1248 1249 // setup test connections, used for fuzzing 1250 void hci_setup_test_connections_fuzz(void); 1251 1252 // free all connections, used for fuzzing 1253 void hci_free_connections_fuzz(void); 1254 1255 #if defined __cplusplus 1256 } 1257 #endif 1258 1259 #endif // HCI_H 1260