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