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_W2_CMAC_FOR_CONFIRMATION, 336 SM_SC_W4_CMAC_FOR_CONFIRMATION, 337 SM_SC_SEND_CONFIRMATION, 338 SM_SC_W2_CMAC_FOR_CHECK_CONFIRMATION, 339 SM_SC_W4_CMAC_FOR_CHECK_CONFIRMATION, 340 SM_SC_W4_CONFIRMATION, 341 SM_SC_SEND_PAIRING_RANDOM, 342 SM_SC_W4_PAIRING_RANDOM, 343 SM_SC_W2_CALCULATE_G2, 344 SM_SC_W4_CALCULATE_G2, 345 SM_SC_W4_CALCULATE_DHKEY, 346 SM_SC_W2_CALCULATE_F5_SALT, 347 SM_SC_W4_CALCULATE_F5_SALT, 348 SM_SC_W2_CALCULATE_F5_MACKEY, 349 SM_SC_W4_CALCULATE_F5_MACKEY, 350 SM_SC_W2_CALCULATE_F5_LTK, 351 SM_SC_W4_CALCULATE_F5_LTK, 352 SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK, 353 SM_SC_W4_CALCULATE_F6_FOR_DHKEY_CHECK, 354 SM_SC_W2_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 355 SM_SC_W4_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 356 SM_SC_W4_USER_RESPONSE, 357 SM_SC_SEND_DHKEY_CHECK_COMMAND, 358 SM_SC_W4_DHKEY_CHECK_COMMAND, 359 SM_SC_W4_LTK_REQUEST_SC, 360 SM_SC_W2_CALCULATE_H6_ILK, 361 SM_SC_W4_CALCULATE_H6_ILK, 362 SM_SC_W2_CALCULATE_H6_BR_EDR_LINK_KEY, 363 SM_SC_W4_CALCULATE_H6_BR_EDR_LINK_KEY, 364 } security_manager_state_t; 365 366 typedef enum { 367 IRK_LOOKUP_IDLE, 368 IRK_LOOKUP_W4_READY, 369 IRK_LOOKUP_STARTED, 370 IRK_LOOKUP_SUCCEEDED, 371 IRK_LOOKUP_FAILED 372 } irk_lookup_state_t; 373 374 typedef uint8_t sm_pairing_packet_t[7]; 375 376 // connection info available as long as connection exists 377 typedef struct sm_connection { 378 hci_con_handle_t sm_handle; 379 uint8_t sm_role; // 0 - IamMaster, 1 = IamSlave 380 uint8_t sm_security_request_received; 381 uint8_t sm_pairing_requested; 382 uint8_t sm_peer_addr_type; 383 bd_addr_t sm_peer_address; 384 security_manager_state_t sm_engine_state; 385 irk_lookup_state_t sm_irk_lookup_state; 386 uint8_t sm_connection_encrypted; 387 uint8_t sm_connection_authenticated; // [0..1] 388 uint8_t sm_connection_sc; 389 uint8_t sm_actual_encryption_key_size; 390 sm_pairing_packet_t sm_m_preq; // only used during c1 391 authorization_state_t sm_connection_authorization_state; 392 uint16_t sm_local_ediv; 393 uint8_t sm_local_rand[8]; 394 int sm_le_db_index; 395 } sm_connection_t; 396 397 // 398 // ATT Server 399 // 400 401 // max ATT request matches L2CAP PDU -- allow to use smaller buffer 402 #ifndef ATT_REQUEST_BUFFER_SIZE 403 #define ATT_REQUEST_BUFFER_SIZE HCI_ACL_PAYLOAD_SIZE 404 #endif 405 406 typedef enum { 407 ATT_SERVER_IDLE, 408 ATT_SERVER_REQUEST_RECEIVED, 409 ATT_SERVER_W4_SIGNED_WRITE_VALIDATION, 410 ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED, 411 ATT_SERVER_RESPONSE_PENDING, 412 } att_server_state_t; 413 414 typedef struct { 415 att_server_state_t state; 416 417 uint8_t peer_addr_type; 418 bd_addr_t peer_address; 419 420 int ir_le_device_db_index; 421 uint8_t ir_lookup_active; 422 uint8_t pairing_active; 423 424 int value_indication_handle; 425 btstack_timer_source_t value_indication_timer; 426 427 att_connection_t connection; 428 429 btstack_linked_list_t notification_requests; 430 btstack_linked_list_t indication_requests; 431 432 #ifdef ENABLE_GATT_OVER_CLASSIC 433 uint16_t l2cap_cid; 434 #endif 435 436 uint16_t request_size; 437 uint8_t request_buffer[ATT_REQUEST_BUFFER_SIZE]; 438 439 } att_server_t; 440 441 #endif 442 443 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 444 typedef enum { 445 L2CAP_INFORMATION_STATE_IDLE = 0, 446 L2CAP_INFORMATION_STATE_W2_SEND_EXTENDED_FEATURE_REQUEST, 447 L2CAP_INFORMATION_STATE_W4_EXTENDED_FEATURE_RESPONSE, 448 L2CAP_INFORMATION_STATE_DONE 449 } l2cap_information_state_t; 450 451 typedef struct { 452 l2cap_information_state_t information_state; 453 uint16_t extended_feature_mask; 454 } l2cap_state_t; 455 #endif 456 457 // 458 typedef struct { 459 // linked list - assert: first field 460 btstack_linked_item_t item; 461 462 // remote side 463 bd_addr_t address; 464 465 // module handle 466 hci_con_handle_t con_handle; 467 468 // le public, le random, classic 469 bd_addr_type_t address_type; 470 471 // role: 0 - master, 1 - slave 472 uint8_t role; 473 474 // connection state 475 CONNECTION_STATE state; 476 477 // bonding 478 uint16_t bonding_flags; 479 uint8_t bonding_status; 480 481 // encryption key size (in octets) 482 uint8_t encryption_key_size; 483 484 // requested security level 485 gap_security_level_t requested_security_level; 486 487 // 488 link_key_type_t link_key_type; 489 490 // remote supported features 491 uint8_t remote_supported_feature_eSCO; 492 493 #ifdef ENABLE_CLASSIC 494 // connection mode, default ACL_CONNECTION_MODE_ACTIVE 495 uint8_t connection_mode; 496 497 // enter/exit sniff mode requests 498 uint16_t sniff_min_interval; // 0: idle, 0xffff exit sniff, else enter sniff 499 uint16_t sniff_max_interval; 500 uint16_t sniff_attempt; 501 uint16_t sniff_timeout; 502 503 // track SCO rx event 504 uint32_t sco_rx_ms; 505 uint8_t sco_rx_count; 506 uint8_t sco_rx_valid; 507 508 // generate sco can send now based on received packets, using timeout below 509 uint8_t sco_tx_ready; 510 511 btstack_timer_source_t timeout_sco; 512 #endif /* ENABLE_CLASSIC */ 513 514 // errands 515 uint32_t authentication_flags; 516 517 btstack_timer_source_t timeout; 518 519 // timeout in system ticks (HAVE_EMBEDDED_TICK) or milliseconds (HAVE_EMBEDDED_TIME_MS) 520 uint32_t timestamp; 521 522 // ACL packet recombination - PRE_BUFFER + ACL Header + ACL payload 523 uint8_t acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + 4 + HCI_ACL_BUFFER_SIZE]; 524 uint16_t acl_recombination_pos; 525 uint16_t acl_recombination_length; 526 527 528 // number packets sent to controller 529 uint8_t num_packets_sent; 530 531 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 532 uint8_t num_packets_completed; 533 #endif 534 535 // LE Connection parameter update 536 le_con_parameter_update_state_t le_con_parameter_update_state; 537 uint8_t le_con_param_update_identifier; 538 uint16_t le_conn_interval_min; 539 uint16_t le_conn_interval_max; 540 uint16_t le_conn_latency; 541 uint16_t le_supervision_timeout; 542 543 #ifdef ENABLE_BLE 544 uint16_t le_connection_interval; 545 546 // LE PHY Update via set phy command 547 uint8_t le_phy_update_all_phys; // 0xff for idle 548 uint8_t le_phy_update_tx_phys; 549 uint8_t le_phy_update_rx_phys; 550 int8_t le_phy_update_phy_options; 551 552 // LE Security Manager 553 sm_connection_t sm_connection; 554 555 // ATT Server 556 att_server_t att_server; 557 #endif 558 559 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 560 l2cap_state_t l2cap_state; 561 #endif 562 563 } hci_connection_t; 564 565 566 /** 567 * HCI Inititizlization State Machine 568 */ 569 typedef enum hci_init_state{ 570 HCI_INIT_SEND_RESET = 0, 571 HCI_INIT_W4_SEND_RESET, 572 HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION, 573 HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION, 574 HCI_INIT_SEND_READ_LOCAL_NAME, 575 HCI_INIT_W4_SEND_READ_LOCAL_NAME, 576 577 HCI_INIT_SEND_BAUD_CHANGE, 578 HCI_INIT_W4_SEND_BAUD_CHANGE, 579 HCI_INIT_CUSTOM_INIT, 580 HCI_INIT_W4_CUSTOM_INIT, 581 HCI_INIT_SEND_RESET_CSR_WARM_BOOT, 582 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT, 583 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET, 584 HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY, 585 586 HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS, 587 HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS, 588 589 HCI_INIT_SEND_BAUD_CHANGE_BCM, 590 HCI_INIT_W4_SEND_BAUD_CHANGE_BCM, 591 592 HCI_INIT_SET_BD_ADDR, 593 HCI_INIT_W4_SET_BD_ADDR, 594 595 HCI_INIT_SEND_RESET_ST_WARM_BOOT, 596 HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT, 597 598 HCI_INIT_READ_BD_ADDR, 599 HCI_INIT_W4_READ_BD_ADDR, 600 601 HCI_INIT_READ_BUFFER_SIZE, 602 HCI_INIT_W4_READ_BUFFER_SIZE, 603 HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES, 604 HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES, 605 606 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 607 HCI_INIT_HOST_BUFFER_SIZE, 608 HCI_INIT_W4_HOST_BUFFER_SIZE, 609 HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 610 HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 611 #endif 612 613 HCI_INIT_SET_EVENT_MASK, 614 HCI_INIT_W4_SET_EVENT_MASK, 615 616 HCI_INIT_WRITE_SIMPLE_PAIRING_MODE, 617 HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE, 618 HCI_INIT_WRITE_PAGE_TIMEOUT, 619 HCI_INIT_W4_WRITE_PAGE_TIMEOUT, 620 HCI_INIT_WRITE_DEFAULT_LINK_POLICY_SETTING, 621 HCI_INIT_W4_WRITE_DEFAULT_LINK_POLICY_SETTING, 622 HCI_INIT_WRITE_CLASS_OF_DEVICE, 623 HCI_INIT_W4_WRITE_CLASS_OF_DEVICE, 624 HCI_INIT_WRITE_LOCAL_NAME, 625 HCI_INIT_W4_WRITE_LOCAL_NAME, 626 HCI_INIT_WRITE_EIR_DATA, 627 HCI_INIT_W4_WRITE_EIR_DATA, 628 HCI_INIT_WRITE_INQUIRY_MODE, 629 HCI_INIT_W4_WRITE_INQUIRY_MODE, 630 HCI_INIT_WRITE_SCAN_ENABLE, 631 HCI_INIT_W4_WRITE_SCAN_ENABLE, 632 633 // SCO over HCI 634 HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 635 HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 636 HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 637 HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 638 639 // SCO over HCI Broadcom 640 HCI_INIT_BCM_WRITE_SCO_PCM_INT, 641 HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT, 642 643 #ifdef ENABLE_BLE 644 HCI_INIT_LE_READ_BUFFER_SIZE, 645 HCI_INIT_W4_LE_READ_BUFFER_SIZE, 646 HCI_INIT_WRITE_LE_HOST_SUPPORTED, 647 HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED, 648 HCI_INIT_LE_SET_EVENT_MASK, 649 HCI_INIT_W4_LE_SET_EVENT_MASK, 650 #endif 651 652 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 653 HCI_INIT_LE_READ_MAX_DATA_LENGTH, 654 HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH, 655 HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH, 656 HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH, 657 #endif 658 659 #ifdef ENABLE_LE_CENTRAL 660 HCI_INIT_READ_WHITE_LIST_SIZE, 661 HCI_INIT_W4_READ_WHITE_LIST_SIZE, 662 663 HCI_INIT_LE_SET_SCAN_PARAMETERS, 664 HCI_INIT_W4_LE_SET_SCAN_PARAMETERS, 665 #endif 666 667 HCI_INIT_DONE, 668 669 HCI_FALLING_ASLEEP_DISCONNECT, 670 HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE, 671 HCI_FALLING_ASLEEP_COMPLETE, 672 673 HCI_INIT_AFTER_SLEEP, 674 675 HCI_HALTING_DISCONNECT_ALL_NO_TIMER, 676 HCI_HALTING_DISCONNECT_ALL_TIMER, 677 HCI_HALTING_W4_TIMER, 678 HCI_HALTING_CLOSE, 679 680 } hci_substate_t; 681 682 enum { 683 LE_ADVERTISEMENT_TASKS_DISABLE = 1 << 0, 684 LE_ADVERTISEMENT_TASKS_SET_ADV_DATA = 1 << 1, 685 LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA = 1 << 2, 686 LE_ADVERTISEMENT_TASKS_SET_PARAMS = 1 << 3, 687 LE_ADVERTISEMENT_TASKS_ENABLE = 1 << 4, 688 }; 689 690 enum { 691 LE_WHITELIST_ON_CONTROLLER = 1 << 0, 692 LE_WHITELIST_ADD_TO_CONTROLLER = 1 << 1, 693 LE_WHITELIST_REMOVE_FROM_CONTROLLER = 1 << 2, 694 }; 695 696 typedef struct { 697 btstack_linked_item_t item; 698 bd_addr_t address; 699 bd_addr_type_t address_type; 700 uint8_t state; 701 } whitelist_entry_t; 702 703 /** 704 * main data structure 705 */ 706 typedef struct { 707 // transport component with configuration 708 const hci_transport_t * hci_transport; 709 const void * config; 710 711 // chipset driver 712 const btstack_chipset_t * chipset; 713 714 // hardware power controller 715 const btstack_control_t * control; 716 717 /* link key db */ 718 const btstack_link_key_db_t * link_key_db; 719 720 // list of existing baseband connections 721 btstack_linked_list_t connections; 722 723 /* callback to L2CAP layer */ 724 btstack_packet_handler_t acl_packet_handler; 725 726 /* callback for SCO data */ 727 btstack_packet_handler_t sco_packet_handler; 728 729 /* callbacks for events */ 730 btstack_linked_list_t event_handlers; 731 732 // hardware error callback 733 void (*hardware_error_callback)(uint8_t error); 734 735 // basic configuration 736 const char * local_name; 737 const uint8_t * eir_data; 738 uint32_t class_of_device; 739 bd_addr_t local_bd_addr; 740 uint8_t default_link_policy_settings; 741 uint8_t ssp_enable; 742 uint8_t ssp_io_capability; 743 uint8_t ssp_authentication_requirement; 744 uint8_t ssp_auto_accept; 745 inquiry_mode_t inquiry_mode; 746 #ifdef ENABLE_CLASSIC 747 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3, we use 16 as default 748 uint8_t gap_required_encyrption_key_size; 749 #endif 750 751 // single buffer for HCI packet assembly + additional prebuffer for H4 drivers 752 uint8_t * hci_packet_buffer; 753 uint8_t hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE + HCI_OUTGOING_PACKET_BUFFER_SIZE]; 754 uint8_t hci_packet_buffer_reserved; 755 uint16_t acl_fragmentation_pos; 756 uint16_t acl_fragmentation_total_size; 757 uint8_t acl_fragmentation_tx_active; 758 759 /* host to controller flow control */ 760 uint8_t num_cmd_packets; 761 uint8_t acl_packets_total_num; 762 uint16_t acl_data_packet_length; 763 uint8_t sco_packets_total_num; 764 uint8_t sco_data_packet_length; 765 uint8_t synchronous_flow_control_enabled; 766 uint8_t le_acl_packets_total_num; 767 uint16_t le_data_packets_length; 768 uint8_t sco_waiting_for_can_send_now; 769 uint8_t sco_can_send_now; 770 771 /* local supported features */ 772 uint8_t local_supported_features[8]; 773 774 /* local supported commands summary - complete info is 64 bytes */ 775 /* 0 - Read Buffer Size (Octet 14/bit 7) */ 776 /* 1 - Write Le Host Supported (Octet 24/bit 6) */ 777 /* 2 - Write Synchronous Flow Control Enable (Octet 10/bit 4) */ 778 /* 3 - Write Default Erroneous Data Reporting (Octet 18/bit 3) */ 779 /* 4 - LE Write Suggested Default Data Length (Octet 34/bit 0) */ 780 /* 5 - LE Read Maximum Data Length (Octet 35/bit 3) */ 781 /* 6 - LE Set Default PHY (Octet 35/bit 5) */ 782 uint8_t local_supported_commands[1]; 783 784 /* bluetooth device information from hci read local version information */ 785 // uint16_t hci_version; 786 // uint16_t hci_revision; 787 // uint16_t lmp_version; 788 uint16_t manufacturer; 789 // uint16_t lmp_subversion; 790 791 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 792 uint16_t packet_types; 793 794 795 /* hci state machine */ 796 HCI_STATE state; 797 hci_substate_t substate; 798 btstack_timer_source_t timeout; 799 btstack_chipset_result_t chipset_result; 800 801 uint16_t last_cmd_opcode; 802 803 uint8_t cmds_ready; 804 805 /* buffer for scan enable cmd - 0xff no change */ 806 uint8_t new_scan_enable_value; 807 808 uint8_t discoverable; 809 uint8_t connectable; 810 uint8_t bondable; 811 812 uint8_t inquiry_state; // see hci.c for state defines 813 814 bd_addr_t remote_name_addr; 815 uint16_t remote_name_clock_offset; 816 uint8_t remote_name_page_scan_repetition_mode; 817 uint8_t remote_name_state; // see hci.c for state defines 818 819 bd_addr_t gap_pairing_addr; 820 uint8_t gap_pairing_state; // see hci.c for state defines 821 union { 822 const char * gap_pairing_pin; 823 uint32_t gap_pairing_passkey; 824 } gap_pairing_input; 825 826 uint16_t sco_voice_setting; 827 uint16_t sco_voice_setting_active; 828 829 uint8_t loopback_mode; 830 831 // buffer for single connection decline 832 uint8_t decline_reason; 833 bd_addr_t decline_addr; 834 835 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 836 uint8_t host_completed_packets; 837 #endif 838 839 #ifdef ENABLE_BLE 840 uint8_t le_own_addr_type; 841 bd_addr_t le_random_address; 842 uint8_t le_random_address_set; 843 #endif 844 845 #ifdef ENABLE_LE_CENTRAL 846 uint8_t le_scanning_enabled; 847 uint8_t le_scanning_active; 848 849 le_connecting_state_t le_connecting_state; 850 851 // buffer for le scan type command - 0xff not set 852 uint8_t le_scan_type; 853 uint16_t le_scan_interval; 854 uint16_t le_scan_window; 855 856 // LE Whitelist Management 857 uint8_t le_whitelist_capacity; 858 btstack_linked_list_t le_whitelist; 859 860 // Connection parameters 861 uint16_t le_connection_interval_min; 862 uint16_t le_connection_interval_max; 863 uint16_t le_connection_latency; 864 uint16_t le_supervision_timeout; 865 uint16_t le_minimum_ce_length; 866 uint16_t le_maximum_ce_length; 867 uint16_t le_connection_scan_interval; 868 uint16_t le_connection_scan_window; 869 #endif 870 871 le_connection_parameter_range_t le_connection_parameter_range; 872 873 #ifdef ENABLE_LE_PERIPHERAL 874 uint8_t * le_advertisements_data; 875 uint8_t le_advertisements_data_len; 876 877 uint8_t * le_scan_response_data; 878 uint8_t le_scan_response_data_len; 879 880 uint8_t le_advertisements_active; 881 uint8_t le_advertisements_enabled; 882 uint8_t le_advertisements_todo; 883 884 uint16_t le_advertisements_interval_min; 885 uint16_t le_advertisements_interval_max; 886 uint8_t le_advertisements_type; 887 uint8_t le_advertisements_direct_address_type; 888 uint8_t le_advertisements_channel_map; 889 uint8_t le_advertisements_filter_policy; 890 bd_addr_t le_advertisements_direct_address; 891 892 uint8_t le_max_number_peripheral_connections; 893 #endif 894 895 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 896 // LE Data Length 897 uint16_t le_supported_max_tx_octets; 898 uint16_t le_supported_max_tx_time; 899 #endif 900 901 // custom BD ADDR 902 bd_addr_t custom_bd_addr; 903 uint8_t custom_bd_addr_set; 904 905 #ifdef ENABLE_CLASSIC 906 uint8_t master_slave_policy; 907 #endif 908 909 // address and address_type of active create connection command (ACL, SCO, LE) 910 bd_addr_t outgoing_addr; 911 bd_addr_type_t outgoing_addr_type; 912 913 } hci_stack_t; 914 915 916 /* API_START */ 917 918 919 // HCI init and configuration 920 921 922 /** 923 * @brief Set up HCI. Needs to be called before any other function. 924 */ 925 void hci_init(const hci_transport_t *transport, const void *config); 926 927 /** 928 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information. 929 */ 930 void hci_set_chipset(const btstack_chipset_t *chipset_driver); 931 932 /** 933 * @brief Configure Bluetooth hardware control. Has to be called before power on. 934 */ 935 void hci_set_control(const btstack_control_t *hardware_control); 936 937 /** 938 * @brief Configure Bluetooth hardware control. Has to be called before power on. 939 */ 940 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db); 941 942 /** 943 * @brief Set callback for Bluetooth Hardware Error 944 */ 945 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)); 946 947 /** 948 * @brief Set Public BD ADDR - passed on to Bluetooth chipset during init if supported in bt_control_h 949 */ 950 void hci_set_bd_addr(bd_addr_t addr); 951 952 /** 953 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 954 */ 955 void hci_set_sco_voice_setting(uint16_t voice_setting); 956 957 /** 958 * @brief Get SCO Voice Setting 959 * @return current voice setting 960 */ 961 uint16_t hci_get_sco_voice_setting(void); 962 963 /** 964 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 965 * @param inquriy_mode see bluetooth_defines.h 966 */ 967 void hci_set_inquiry_mode(inquiry_mode_t mode); 968 969 /** 970 * @brief Requests the change of BTstack power mode. 971 */ 972 int hci_power_control(HCI_POWER_MODE mode); 973 974 /** 975 * @brief Shutdown HCI 976 */ 977 void hci_close(void); 978 979 980 // Callback registration 981 982 983 /** 984 * @brief Add event packet handler. 985 */ 986 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler); 987 988 /** 989 * @brief Registers a packet handler for ACL data. Used by L2CAP 990 */ 991 void hci_register_acl_packet_handler(btstack_packet_handler_t handler); 992 993 /** 994 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 995 */ 996 void hci_register_sco_packet_handler(btstack_packet_handler_t handler); 997 998 999 // Sending HCI Commands 1000 1001 /** 1002 * @brief Check if CMD packet can be sent to controller 1003 */ 1004 int hci_can_send_command_packet_now(void); 1005 1006 /** 1007 * @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. 1008 */ 1009 int hci_send_cmd(const hci_cmd_t *cmd, ...); 1010 1011 1012 // Sending SCO Packets 1013 1014 /** @brief Get SCO packet length for current SCO Voice setting 1015 * @note Using SCO packets of the exact length is required for USB transfer 1016 * @return Length of SCO packets in bytes (not audio frames) incl. 3 byte header 1017 */ 1018 int hci_get_sco_packet_length(void); 1019 1020 /** 1021 * @brief Request emission of HCI_EVENT_SCO_CAN_SEND_NOW as soon as possible 1022 * @note HCI_EVENT_SCO_CAN_SEND_NOW might be emitted during call to this function 1023 * so packet handler should be ready to handle it 1024 */ 1025 void hci_request_sco_can_send_now_event(void); 1026 1027 /** 1028 * @brief Check HCI packet buffer and if SCO packet can be sent to controller 1029 */ 1030 int hci_can_send_sco_packet_now(void); 1031 1032 /** 1033 * @brief Check if SCO packet can be sent to controller 1034 */ 1035 int hci_can_send_prepared_sco_packet_now(void); 1036 1037 /** 1038 * @brief Send SCO packet prepared in HCI packet buffer 1039 */ 1040 int hci_send_sco_packet_buffer(int size); 1041 1042 1043 // Outgoing packet buffer, also used for SCO packets 1044 // see hci_can_send_prepared_sco_packet_now amn hci_send_sco_packet_buffer 1045 1046 /** 1047 * Reserves outgoing packet buffer. 1048 * @return 1 on success 1049 */ 1050 int hci_reserve_packet_buffer(void); 1051 1052 /** 1053 * Get pointer for outgoing packet buffer 1054 */ 1055 uint8_t* hci_get_outgoing_packet_buffer(void); 1056 1057 /** 1058 * Release outgoing packet buffer\ 1059 * @note only called instead of hci_send_preparared 1060 */ 1061 void hci_release_packet_buffer(void); 1062 1063 /** 1064 * @brief Sets the master/slave policy 1065 * @param policy (0: attempt to become master, 1: let connecting device decide) 1066 */ 1067 void hci_set_master_slave_policy(uint8_t policy); 1068 1069 /* API_END */ 1070 1071 1072 /** 1073 * va_list version of hci_send_cmd, call hci_send_cmd_packet 1074 */ 1075 int hci_send_cmd_va_arg(const hci_cmd_t *cmd, va_list argtr); 1076 1077 /** 1078 * Get connection iterator. Only used by l2cap.c and sm.c 1079 */ 1080 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it); 1081 1082 /** 1083 * Get internal hci_connection_t for given handle. Used by L2CAP, SM, daemon 1084 */ 1085 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 1086 1087 /** 1088 * Get internal hci_connection_t for given Bluetooth addres. Called by L2CAP 1089 */ 1090 hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t addr, bd_addr_type_t addr_type); 1091 1092 /** 1093 * Check if outgoing packet buffer is reserved. Used for internal checks in l2cap.c 1094 */ 1095 int hci_is_packet_buffer_reserved(void); 1096 1097 /** 1098 * Check hci packet buffer is free and a classic acl packet can be sent to controller 1099 */ 1100 int hci_can_send_acl_classic_packet_now(void); 1101 1102 /** 1103 * Check hci packet buffer is free and an LE acl packet can be sent to controller 1104 */ 1105 int hci_can_send_acl_le_packet_now(void); 1106 1107 /** 1108 * Check hci packet buffer is free and an acl packet for the given handle can be sent to controller 1109 */ 1110 int hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 1111 1112 /** 1113 * Check if acl packet for the given handle can be sent to controller 1114 */ 1115 int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 1116 1117 /** 1118 * Send acl packet prepared in hci packet buffer 1119 */ 1120 int hci_send_acl_packet_buffer(int size); 1121 1122 /** 1123 * Check if authentication is active. It delays automatic disconnect while no L2CAP connection 1124 * Called by l2cap. 1125 */ 1126 int hci_authentication_active_for_handle(hci_con_handle_t handle); 1127 1128 /** 1129 * Get maximal ACL Classic data packet length based on used buffer size. Called by L2CAP 1130 */ 1131 uint16_t hci_max_acl_data_packet_length(void); 1132 1133 /** 1134 * Get supported packet types. Called by L2CAP 1135 */ 1136 uint16_t hci_usable_acl_packet_types(void); 1137 1138 /** 1139 * Check if ACL packets marked as non flushable can be sent. Called by L2CAP 1140 */ 1141 int hci_non_flushable_packet_boundary_flag_supported(void); 1142 1143 /** 1144 * Check if extended SCO Link is supported 1145 */ 1146 int hci_extended_sco_link_supported(void); 1147 1148 /** 1149 * Check if SSP is supported on both sides. Called by L2CAP 1150 */ 1151 int gap_ssp_supported_on_both_sides(hci_con_handle_t handle); 1152 1153 /** 1154 * Disconn because of security block. Called by L2CAP 1155 */ 1156 void hci_disconnect_security_block(hci_con_handle_t con_handle); 1157 1158 /** 1159 * Query if remote side supports eSCO 1160 */ 1161 int hci_remote_esco_supported(hci_con_handle_t con_handle); 1162 1163 /** 1164 * Emit current HCI state. Called by daemon 1165 */ 1166 void hci_emit_state(void); 1167 1168 /** 1169 * Send complete CMD packet. Called by daemon and hci_send_cmd_va_arg 1170 * @returns 0 if command was successfully sent to HCI Transport layer 1171 */ 1172 int hci_send_cmd_packet(uint8_t *packet, int size); 1173 1174 /** 1175 * Disconnect all HCI connections. Called by daemon 1176 */ 1177 void hci_disconnect_all(void); 1178 1179 /** 1180 * Get number of free acl slots for packets of given handle. Called by daemon 1181 */ 1182 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 1183 1184 /** 1185 * @brief Set Advertisement Parameters 1186 * @param adv_int_min 1187 * @param adv_int_max 1188 * @param adv_type 1189 * @param direct_address_type 1190 * @param direct_address 1191 * @param channel_map 1192 * @param filter_policy 1193 * 1194 * @note internal use. use gap_advertisements_set_params from gap.h instead. 1195 */ 1196 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 1197 uint8_t direct_address_typ, bd_addr_t direct_address, uint8_t channel_map, uint8_t filter_policy); 1198 1199 /** 1200 * 1201 * @note internal use. use gap_random_address_set_mode from gap.h instead. 1202 */ 1203 void hci_le_set_own_address_type(uint8_t own_address_type); 1204 1205 /** 1206 * @brief Get Manufactured 1207 * @return manufacturer id 1208 */ 1209 uint16_t hci_get_manufacturer(void); 1210 1211 // Only for PTS testing 1212 1213 /** 1214 * Disable automatic L2CAP disconnect if no L2CAP connection is established 1215 */ 1216 void hci_disable_l2cap_timeout_check(void); 1217 1218 /** 1219 * Get state 1220 */ 1221 HCI_STATE hci_get_state(void); 1222 1223 /** 1224 * Defer halt. Used by btstack_crypto to allow current HCI operation to complete 1225 */ 1226 void hci_halting_defer(void); 1227 1228 #if defined __cplusplus 1229 } 1230 #endif 1231 1232 #endif // HCI_H 1233