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