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