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_GET_RANDOM_A, 336 SM_SC_W4_GET_RANDOM_A, 337 SM_SC_W2_GET_RANDOM_B, 338 SM_SC_W4_GET_RANDOM_B, 339 SM_SC_W2_CMAC_FOR_CONFIRMATION, 340 SM_SC_W4_CMAC_FOR_CONFIRMATION, 341 SM_SC_SEND_CONFIRMATION, 342 SM_SC_W2_CMAC_FOR_CHECK_CONFIRMATION, 343 SM_SC_W4_CMAC_FOR_CHECK_CONFIRMATION, 344 SM_SC_W4_CONFIRMATION, 345 SM_SC_SEND_PAIRING_RANDOM, 346 SM_SC_W4_PAIRING_RANDOM, 347 SM_SC_W2_CALCULATE_G2, 348 SM_SC_W4_CALCULATE_G2, 349 SM_SC_W4_CALCULATE_DHKEY, 350 SM_SC_W2_CALCULATE_F5_SALT, 351 SM_SC_W4_CALCULATE_F5_SALT, 352 SM_SC_W2_CALCULATE_F5_MACKEY, 353 SM_SC_W4_CALCULATE_F5_MACKEY, 354 SM_SC_W2_CALCULATE_F5_LTK, 355 SM_SC_W4_CALCULATE_F5_LTK, 356 SM_SC_W2_CALCULATE_F6_FOR_DHKEY_CHECK, 357 SM_SC_W4_CALCULATE_F6_FOR_DHKEY_CHECK, 358 SM_SC_W2_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 359 SM_SC_W4_CALCULATE_F6_TO_VERIFY_DHKEY_CHECK, 360 SM_SC_W4_USER_RESPONSE, 361 SM_SC_SEND_DHKEY_CHECK_COMMAND, 362 SM_SC_W4_DHKEY_CHECK_COMMAND, 363 SM_SC_W4_LTK_REQUEST_SC, 364 SM_SC_W2_CALCULATE_H6_ILK, 365 SM_SC_W4_CALCULATE_H6_ILK, 366 SM_SC_W2_CALCULATE_H6_BR_EDR_LINK_KEY, 367 SM_SC_W4_CALCULATE_H6_BR_EDR_LINK_KEY, 368 } security_manager_state_t; 369 370 typedef enum { 371 IRK_LOOKUP_IDLE, 372 IRK_LOOKUP_W4_READY, 373 IRK_LOOKUP_STARTED, 374 IRK_LOOKUP_SUCCEEDED, 375 IRK_LOOKUP_FAILED 376 } irk_lookup_state_t; 377 378 typedef uint8_t sm_pairing_packet_t[7]; 379 380 // connection info available as long as connection exists 381 typedef struct sm_connection { 382 hci_con_handle_t sm_handle; 383 uint8_t sm_role; // 0 - IamMaster, 1 = IamSlave 384 uint8_t sm_security_request_received; 385 uint8_t sm_pairing_requested; 386 uint8_t sm_peer_addr_type; 387 bd_addr_t sm_peer_address; 388 security_manager_state_t sm_engine_state; 389 irk_lookup_state_t sm_irk_lookup_state; 390 uint8_t sm_connection_encrypted; 391 uint8_t sm_connection_authenticated; // [0..1] 392 uint8_t sm_connection_sc; 393 uint8_t sm_actual_encryption_key_size; 394 sm_pairing_packet_t sm_m_preq; // only used during c1 395 authorization_state_t sm_connection_authorization_state; 396 uint16_t sm_local_ediv; 397 uint8_t sm_local_rand[8]; 398 int sm_le_db_index; 399 } sm_connection_t; 400 401 // 402 // ATT Server 403 // 404 405 // max ATT request matches L2CAP PDU -- allow to use smaller buffer 406 #ifndef ATT_REQUEST_BUFFER_SIZE 407 #define ATT_REQUEST_BUFFER_SIZE HCI_ACL_PAYLOAD_SIZE 408 #endif 409 410 typedef enum { 411 ATT_SERVER_IDLE, 412 ATT_SERVER_REQUEST_RECEIVED, 413 ATT_SERVER_W4_SIGNED_WRITE_VALIDATION, 414 ATT_SERVER_REQUEST_RECEIVED_AND_VALIDATED, 415 ATT_SERVER_RESPONSE_PENDING, 416 } att_server_state_t; 417 418 typedef struct { 419 att_server_state_t state; 420 421 uint8_t peer_addr_type; 422 bd_addr_t peer_address; 423 424 int ir_le_device_db_index; 425 uint8_t ir_lookup_active; 426 uint8_t pairing_active; 427 428 int value_indication_handle; 429 btstack_timer_source_t value_indication_timer; 430 431 att_connection_t connection; 432 433 btstack_linked_list_t notification_requests; 434 btstack_linked_list_t indication_requests; 435 436 #ifdef ENABLE_GATT_OVER_CLASSIC 437 uint16_t l2cap_cid; 438 #endif 439 440 uint16_t request_size; 441 uint8_t request_buffer[ATT_REQUEST_BUFFER_SIZE]; 442 443 } att_server_t; 444 445 #endif 446 447 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 448 typedef enum { 449 L2CAP_INFORMATION_STATE_IDLE = 0, 450 L2CAP_INFORMATION_STATE_W2_SEND_EXTENDED_FEATURE_REQUEST, 451 L2CAP_INFORMATION_STATE_W4_EXTENDED_FEATURE_RESPONSE, 452 L2CAP_INFORMATION_STATE_DONE 453 } l2cap_information_state_t; 454 455 typedef struct { 456 l2cap_information_state_t information_state; 457 uint16_t extended_feature_mask; 458 } l2cap_state_t; 459 #endif 460 461 // 462 typedef struct { 463 // linked list - assert: first field 464 btstack_linked_item_t item; 465 466 // remote side 467 bd_addr_t address; 468 469 // module handle 470 hci_con_handle_t con_handle; 471 472 // le public, le random, classic 473 bd_addr_type_t address_type; 474 475 // role: 0 - master, 1 - slave 476 uint8_t role; 477 478 // connection state 479 CONNECTION_STATE state; 480 481 // bonding 482 uint16_t bonding_flags; 483 uint8_t bonding_status; 484 485 // encryption key size (in octets) 486 uint8_t encryption_key_size; 487 488 // requested security level 489 gap_security_level_t requested_security_level; 490 491 // 492 link_key_type_t link_key_type; 493 494 // remote supported features 495 uint8_t remote_supported_feature_eSCO; 496 497 #ifdef ENABLE_CLASSIC 498 // connection mode, default ACL_CONNECTION_MODE_ACTIVE 499 uint8_t connection_mode; 500 501 // enter/exit sniff mode requests 502 uint16_t sniff_min_interval; // 0: idle, 0xffff exit sniff, else enter sniff 503 uint16_t sniff_max_interval; 504 uint16_t sniff_attempt; 505 uint16_t sniff_timeout; 506 507 // track SCO rx event 508 uint32_t sco_rx_ms; 509 uint8_t sco_rx_count; 510 uint8_t sco_rx_valid; 511 512 // generate sco can send now based on received packets, using timeout below 513 uint8_t sco_tx_ready; 514 515 btstack_timer_source_t timeout_sco; 516 #endif /* ENABLE_CLASSIC */ 517 518 // errands 519 uint32_t authentication_flags; 520 521 btstack_timer_source_t timeout; 522 523 // timeout in system ticks (HAVE_EMBEDDED_TICK) or milliseconds (HAVE_EMBEDDED_TIME_MS) 524 uint32_t timestamp; 525 526 // ACL packet recombination - PRE_BUFFER + ACL Header + ACL payload 527 uint8_t acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + 4 + HCI_ACL_BUFFER_SIZE]; 528 uint16_t acl_recombination_pos; 529 uint16_t acl_recombination_length; 530 531 532 // number packets sent to controller 533 uint8_t num_packets_sent; 534 535 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 536 uint8_t num_packets_completed; 537 #endif 538 539 // LE Connection parameter update 540 le_con_parameter_update_state_t le_con_parameter_update_state; 541 uint8_t le_con_param_update_identifier; 542 uint16_t le_conn_interval_min; 543 uint16_t le_conn_interval_max; 544 uint16_t le_conn_latency; 545 uint16_t le_supervision_timeout; 546 547 #ifdef ENABLE_BLE 548 uint16_t le_connection_interval; 549 550 // LE PHY Update via set phy command 551 uint8_t le_phy_update_all_phys; // 0xff for idle 552 uint8_t le_phy_update_tx_phys; 553 uint8_t le_phy_update_rx_phys; 554 int8_t le_phy_update_phy_options; 555 556 // LE Security Manager 557 sm_connection_t sm_connection; 558 559 // ATT Server 560 att_server_t att_server; 561 #endif 562 563 #ifdef ENABLE_L2CAP_ENHANCED_RETRANSMISSION_MODE 564 l2cap_state_t l2cap_state; 565 #endif 566 567 } hci_connection_t; 568 569 570 /** 571 * HCI Inititizlization State Machine 572 */ 573 typedef enum hci_init_state{ 574 HCI_INIT_SEND_RESET = 0, 575 HCI_INIT_W4_SEND_RESET, 576 HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION, 577 HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION, 578 HCI_INIT_SEND_READ_LOCAL_NAME, 579 HCI_INIT_W4_SEND_READ_LOCAL_NAME, 580 581 HCI_INIT_SEND_BAUD_CHANGE, 582 HCI_INIT_W4_SEND_BAUD_CHANGE, 583 HCI_INIT_CUSTOM_INIT, 584 HCI_INIT_W4_CUSTOM_INIT, 585 HCI_INIT_SEND_RESET_CSR_WARM_BOOT, 586 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT, 587 HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET, 588 HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY, 589 590 HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS, 591 HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS, 592 593 HCI_INIT_SEND_BAUD_CHANGE_BCM, 594 HCI_INIT_W4_SEND_BAUD_CHANGE_BCM, 595 596 HCI_INIT_SET_BD_ADDR, 597 HCI_INIT_W4_SET_BD_ADDR, 598 599 HCI_INIT_SEND_RESET_ST_WARM_BOOT, 600 HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT, 601 602 HCI_INIT_READ_BD_ADDR, 603 HCI_INIT_W4_READ_BD_ADDR, 604 605 HCI_INIT_READ_BUFFER_SIZE, 606 HCI_INIT_W4_READ_BUFFER_SIZE, 607 HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES, 608 HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES, 609 610 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 611 HCI_INIT_HOST_BUFFER_SIZE, 612 HCI_INIT_W4_HOST_BUFFER_SIZE, 613 HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 614 HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL, 615 #endif 616 617 HCI_INIT_SET_EVENT_MASK, 618 HCI_INIT_W4_SET_EVENT_MASK, 619 620 HCI_INIT_WRITE_SIMPLE_PAIRING_MODE, 621 HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE, 622 HCI_INIT_WRITE_PAGE_TIMEOUT, 623 HCI_INIT_W4_WRITE_PAGE_TIMEOUT, 624 HCI_INIT_WRITE_DEFAULT_LINK_POLICY_SETTING, 625 HCI_INIT_W4_WRITE_DEFAULT_LINK_POLICY_SETTING, 626 HCI_INIT_WRITE_CLASS_OF_DEVICE, 627 HCI_INIT_W4_WRITE_CLASS_OF_DEVICE, 628 HCI_INIT_WRITE_LOCAL_NAME, 629 HCI_INIT_W4_WRITE_LOCAL_NAME, 630 HCI_INIT_WRITE_EIR_DATA, 631 HCI_INIT_W4_WRITE_EIR_DATA, 632 HCI_INIT_WRITE_INQUIRY_MODE, 633 HCI_INIT_W4_WRITE_INQUIRY_MODE, 634 HCI_INIT_WRITE_SCAN_ENABLE, 635 HCI_INIT_W4_WRITE_SCAN_ENABLE, 636 637 // SCO over HCI 638 HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 639 HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, 640 HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 641 HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 642 643 // SCO over HCI Broadcom 644 HCI_INIT_BCM_WRITE_SCO_PCM_INT, 645 HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT, 646 647 #ifdef ENABLE_BLE 648 HCI_INIT_LE_READ_BUFFER_SIZE, 649 HCI_INIT_W4_LE_READ_BUFFER_SIZE, 650 HCI_INIT_WRITE_LE_HOST_SUPPORTED, 651 HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED, 652 HCI_INIT_LE_SET_EVENT_MASK, 653 HCI_INIT_W4_LE_SET_EVENT_MASK, 654 #endif 655 656 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 657 HCI_INIT_LE_READ_MAX_DATA_LENGTH, 658 HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH, 659 HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH, 660 HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH, 661 #endif 662 663 #ifdef ENABLE_LE_CENTRAL 664 HCI_INIT_READ_WHITE_LIST_SIZE, 665 HCI_INIT_W4_READ_WHITE_LIST_SIZE, 666 667 HCI_INIT_LE_SET_SCAN_PARAMETERS, 668 HCI_INIT_W4_LE_SET_SCAN_PARAMETERS, 669 #endif 670 671 HCI_INIT_DONE, 672 673 HCI_FALLING_ASLEEP_DISCONNECT, 674 HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE, 675 HCI_FALLING_ASLEEP_COMPLETE, 676 677 HCI_INIT_AFTER_SLEEP, 678 679 HCI_HALTING_DISCONNECT_ALL_NO_TIMER, 680 HCI_HALTING_DISCONNECT_ALL_TIMER, 681 HCI_HALTING_W4_TIMER, 682 HCI_HALTING_CLOSE, 683 684 } hci_substate_t; 685 686 enum { 687 LE_ADVERTISEMENT_TASKS_DISABLE = 1 << 0, 688 LE_ADVERTISEMENT_TASKS_SET_ADV_DATA = 1 << 1, 689 LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA = 1 << 2, 690 LE_ADVERTISEMENT_TASKS_SET_PARAMS = 1 << 3, 691 LE_ADVERTISEMENT_TASKS_ENABLE = 1 << 4, 692 }; 693 694 enum { 695 LE_WHITELIST_ON_CONTROLLER = 1 << 0, 696 LE_WHITELIST_ADD_TO_CONTROLLER = 1 << 1, 697 LE_WHITELIST_REMOVE_FROM_CONTROLLER = 1 << 2, 698 }; 699 700 typedef struct { 701 btstack_linked_item_t item; 702 bd_addr_t address; 703 bd_addr_type_t address_type; 704 uint8_t state; 705 } whitelist_entry_t; 706 707 /** 708 * main data structure 709 */ 710 typedef struct { 711 // transport component with configuration 712 const hci_transport_t * hci_transport; 713 const void * config; 714 715 // chipset driver 716 const btstack_chipset_t * chipset; 717 718 // hardware power controller 719 const btstack_control_t * control; 720 721 /* link key db */ 722 const btstack_link_key_db_t * link_key_db; 723 724 // list of existing baseband connections 725 btstack_linked_list_t connections; 726 727 /* callback to L2CAP layer */ 728 btstack_packet_handler_t acl_packet_handler; 729 730 /* callback for SCO data */ 731 btstack_packet_handler_t sco_packet_handler; 732 733 /* callbacks for events */ 734 btstack_linked_list_t event_handlers; 735 736 // hardware error callback 737 void (*hardware_error_callback)(uint8_t error); 738 739 // basic configuration 740 const char * local_name; 741 const uint8_t * eir_data; 742 uint32_t class_of_device; 743 bd_addr_t local_bd_addr; 744 uint8_t default_link_policy_settings; 745 uint8_t ssp_enable; 746 uint8_t ssp_io_capability; 747 uint8_t ssp_authentication_requirement; 748 uint8_t ssp_auto_accept; 749 inquiry_mode_t inquiry_mode; 750 #ifdef ENABLE_CLASSIC 751 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3, we use 16 as default 752 uint8_t gap_required_encyrption_key_size; 753 #endif 754 755 // single buffer for HCI packet assembly + additional prebuffer for H4 drivers 756 uint8_t * hci_packet_buffer; 757 uint8_t hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE + HCI_OUTGOING_PACKET_BUFFER_SIZE]; 758 uint8_t hci_packet_buffer_reserved; 759 uint16_t acl_fragmentation_pos; 760 uint16_t acl_fragmentation_total_size; 761 uint8_t acl_fragmentation_tx_active; 762 763 /* host to controller flow control */ 764 uint8_t num_cmd_packets; 765 uint8_t acl_packets_total_num; 766 uint16_t acl_data_packet_length; 767 uint8_t sco_packets_total_num; 768 uint8_t sco_data_packet_length; 769 uint8_t synchronous_flow_control_enabled; 770 uint8_t le_acl_packets_total_num; 771 uint16_t le_data_packets_length; 772 uint8_t sco_waiting_for_can_send_now; 773 uint8_t sco_can_send_now; 774 775 /* local supported features */ 776 uint8_t local_supported_features[8]; 777 778 /* local supported commands summary - complete info is 64 bytes */ 779 /* 0 - Read Buffer Size (Octet 14/bit 7) */ 780 /* 1 - Write Le Host Supported (Octet 24/bit 6) */ 781 /* 2 - Write Synchronous Flow Control Enable (Octet 10/bit 4) */ 782 /* 3 - Write Default Erroneous Data Reporting (Octet 18/bit 3) */ 783 /* 4 - LE Write Suggested Default Data Length (Octet 34/bit 0) */ 784 /* 5 - LE Read Maximum Data Length (Octet 35/bit 3) */ 785 /* 6 - LE Set Default PHY (Octet 35/bit 5) */ 786 uint8_t local_supported_commands[1]; 787 788 /* bluetooth device information from hci read local version information */ 789 // uint16_t hci_version; 790 // uint16_t hci_revision; 791 // uint16_t lmp_version; 792 uint16_t manufacturer; 793 // uint16_t lmp_subversion; 794 795 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 796 uint16_t packet_types; 797 798 799 /* hci state machine */ 800 HCI_STATE state; 801 hci_substate_t substate; 802 btstack_timer_source_t timeout; 803 btstack_chipset_result_t chipset_result; 804 805 uint16_t last_cmd_opcode; 806 807 uint8_t cmds_ready; 808 809 /* buffer for scan enable cmd - 0xff no change */ 810 uint8_t new_scan_enable_value; 811 812 uint8_t discoverable; 813 uint8_t connectable; 814 uint8_t bondable; 815 816 uint8_t inquiry_state; // see hci.c for state defines 817 818 bd_addr_t remote_name_addr; 819 uint16_t remote_name_clock_offset; 820 uint8_t remote_name_page_scan_repetition_mode; 821 uint8_t remote_name_state; // see hci.c for state defines 822 823 bd_addr_t gap_pairing_addr; 824 uint8_t gap_pairing_state; // see hci.c for state defines 825 union { 826 const char * gap_pairing_pin; 827 uint32_t gap_pairing_passkey; 828 } gap_pairing_input; 829 830 uint16_t sco_voice_setting; 831 uint16_t sco_voice_setting_active; 832 833 uint8_t loopback_mode; 834 835 // buffer for single connection decline 836 uint8_t decline_reason; 837 bd_addr_t decline_addr; 838 839 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 840 uint8_t host_completed_packets; 841 #endif 842 843 #ifdef ENABLE_BLE 844 uint8_t le_own_addr_type; 845 bd_addr_t le_random_address; 846 uint8_t le_random_address_set; 847 #endif 848 849 #ifdef ENABLE_LE_CENTRAL 850 uint8_t le_scanning_enabled; 851 uint8_t le_scanning_active; 852 853 le_connecting_state_t le_connecting_state; 854 855 // buffer for le scan type command - 0xff not set 856 uint8_t le_scan_type; 857 uint16_t le_scan_interval; 858 uint16_t le_scan_window; 859 860 // LE Whitelist Management 861 uint8_t le_whitelist_capacity; 862 btstack_linked_list_t le_whitelist; 863 864 // Connection parameters 865 uint16_t le_connection_interval_min; 866 uint16_t le_connection_interval_max; 867 uint16_t le_connection_latency; 868 uint16_t le_supervision_timeout; 869 uint16_t le_minimum_ce_length; 870 uint16_t le_maximum_ce_length; 871 uint16_t le_connection_scan_interval; 872 uint16_t le_connection_scan_window; 873 #endif 874 875 le_connection_parameter_range_t le_connection_parameter_range; 876 877 #ifdef ENABLE_LE_PERIPHERAL 878 uint8_t * le_advertisements_data; 879 uint8_t le_advertisements_data_len; 880 881 uint8_t * le_scan_response_data; 882 uint8_t le_scan_response_data_len; 883 884 uint8_t le_advertisements_active; 885 uint8_t le_advertisements_enabled; 886 uint8_t le_advertisements_todo; 887 888 uint16_t le_advertisements_interval_min; 889 uint16_t le_advertisements_interval_max; 890 uint8_t le_advertisements_type; 891 uint8_t le_advertisements_direct_address_type; 892 uint8_t le_advertisements_channel_map; 893 uint8_t le_advertisements_filter_policy; 894 bd_addr_t le_advertisements_direct_address; 895 896 uint8_t le_max_number_peripheral_connections; 897 #endif 898 899 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 900 // LE Data Length 901 uint16_t le_supported_max_tx_octets; 902 uint16_t le_supported_max_tx_time; 903 #endif 904 905 // custom BD ADDR 906 bd_addr_t custom_bd_addr; 907 uint8_t custom_bd_addr_set; 908 909 #ifdef ENABLE_CLASSIC 910 uint8_t master_slave_policy; 911 #endif 912 913 // address and address_type of active create connection command (ACL, SCO, LE) 914 bd_addr_t outgoing_addr; 915 bd_addr_type_t outgoing_addr_type; 916 917 } hci_stack_t; 918 919 920 /* API_START */ 921 922 923 // HCI init and configuration 924 925 926 /** 927 * @brief Set up HCI. Needs to be called before any other function. 928 */ 929 void hci_init(const hci_transport_t *transport, const void *config); 930 931 /** 932 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information. 933 */ 934 void hci_set_chipset(const btstack_chipset_t *chipset_driver); 935 936 /** 937 * @brief Configure Bluetooth hardware control. Has to be called before power on. 938 */ 939 void hci_set_control(const btstack_control_t *hardware_control); 940 941 /** 942 * @brief Configure Bluetooth hardware control. Has to be called before power on. 943 */ 944 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db); 945 946 /** 947 * @brief Set callback for Bluetooth Hardware Error 948 */ 949 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)); 950 951 /** 952 * @brief Set Public BD ADDR - passed on to Bluetooth chipset during init if supported in bt_control_h 953 */ 954 void hci_set_bd_addr(bd_addr_t addr); 955 956 /** 957 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 958 */ 959 void hci_set_sco_voice_setting(uint16_t voice_setting); 960 961 /** 962 * @brief Get SCO Voice Setting 963 * @return current voice setting 964 */ 965 uint16_t hci_get_sco_voice_setting(void); 966 967 /** 968 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 969 * @param inquriy_mode see bluetooth_defines.h 970 */ 971 void hci_set_inquiry_mode(inquiry_mode_t mode); 972 973 /** 974 * @brief Requests the change of BTstack power mode. 975 */ 976 int hci_power_control(HCI_POWER_MODE mode); 977 978 /** 979 * @brief Shutdown HCI 980 */ 981 void hci_close(void); 982 983 984 // Callback registration 985 986 987 /** 988 * @brief Add event packet handler. 989 */ 990 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler); 991 992 /** 993 * @brief Registers a packet handler for ACL data. Used by L2CAP 994 */ 995 void hci_register_acl_packet_handler(btstack_packet_handler_t handler); 996 997 /** 998 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 999 */ 1000 void hci_register_sco_packet_handler(btstack_packet_handler_t handler); 1001 1002 1003 // Sending HCI Commands 1004 1005 /** 1006 * @brief Check if CMD packet can be sent to controller 1007 */ 1008 int hci_can_send_command_packet_now(void); 1009 1010 /** 1011 * @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. 1012 */ 1013 int hci_send_cmd(const hci_cmd_t *cmd, ...); 1014 1015 1016 // Sending SCO Packets 1017 1018 /** @brief Get SCO packet length for current SCO Voice setting 1019 * @note Using SCO packets of the exact length is required for USB transfer 1020 * @return Length of SCO packets in bytes (not audio frames) incl. 3 byte header 1021 */ 1022 int hci_get_sco_packet_length(void); 1023 1024 /** 1025 * @brief Request emission of HCI_EVENT_SCO_CAN_SEND_NOW as soon as possible 1026 * @note HCI_EVENT_SCO_CAN_SEND_NOW might be emitted during call to this function 1027 * so packet handler should be ready to handle it 1028 */ 1029 void hci_request_sco_can_send_now_event(void); 1030 1031 /** 1032 * @brief Check HCI packet buffer and if SCO packet can be sent to controller 1033 */ 1034 int hci_can_send_sco_packet_now(void); 1035 1036 /** 1037 * @brief Check if SCO packet can be sent to controller 1038 */ 1039 int hci_can_send_prepared_sco_packet_now(void); 1040 1041 /** 1042 * @brief Send SCO packet prepared in HCI packet buffer 1043 */ 1044 int hci_send_sco_packet_buffer(int size); 1045 1046 1047 // Outgoing packet buffer, also used for SCO packets 1048 // see hci_can_send_prepared_sco_packet_now amn hci_send_sco_packet_buffer 1049 1050 /** 1051 * Reserves outgoing packet buffer. 1052 * @return 1 on success 1053 */ 1054 int hci_reserve_packet_buffer(void); 1055 1056 /** 1057 * Get pointer for outgoing packet buffer 1058 */ 1059 uint8_t* hci_get_outgoing_packet_buffer(void); 1060 1061 /** 1062 * Release outgoing packet buffer\ 1063 * @note only called instead of hci_send_preparared 1064 */ 1065 void hci_release_packet_buffer(void); 1066 1067 /** 1068 * @brief Sets the master/slave policy 1069 * @param policy (0: attempt to become master, 1: let connecting device decide) 1070 */ 1071 void hci_set_master_slave_policy(uint8_t policy); 1072 1073 /* API_END */ 1074 1075 1076 /** 1077 * va_list version of hci_send_cmd, call hci_send_cmd_packet 1078 */ 1079 int hci_send_cmd_va_arg(const hci_cmd_t *cmd, va_list argtr); 1080 1081 /** 1082 * Get connection iterator. Only used by l2cap.c and sm.c 1083 */ 1084 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it); 1085 1086 /** 1087 * Get internal hci_connection_t for given handle. Used by L2CAP, SM, daemon 1088 */ 1089 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 1090 1091 /** 1092 * Get internal hci_connection_t for given Bluetooth addres. Called by L2CAP 1093 */ 1094 hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t addr, bd_addr_type_t addr_type); 1095 1096 /** 1097 * Check if outgoing packet buffer is reserved. Used for internal checks in l2cap.c 1098 */ 1099 int hci_is_packet_buffer_reserved(void); 1100 1101 /** 1102 * Check hci packet buffer is free and a classic acl packet can be sent to controller 1103 */ 1104 int hci_can_send_acl_classic_packet_now(void); 1105 1106 /** 1107 * Check hci packet buffer is free and an LE acl packet can be sent to controller 1108 */ 1109 int hci_can_send_acl_le_packet_now(void); 1110 1111 /** 1112 * Check hci packet buffer is free and an acl packet for the given handle can be sent to controller 1113 */ 1114 int hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 1115 1116 /** 1117 * Check if acl packet for the given handle can be sent to controller 1118 */ 1119 int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 1120 1121 /** 1122 * Send acl packet prepared in hci packet buffer 1123 */ 1124 int hci_send_acl_packet_buffer(int size); 1125 1126 /** 1127 * Check if authentication is active. It delays automatic disconnect while no L2CAP connection 1128 * Called by l2cap. 1129 */ 1130 int hci_authentication_active_for_handle(hci_con_handle_t handle); 1131 1132 /** 1133 * Get maximal ACL Classic data packet length based on used buffer size. Called by L2CAP 1134 */ 1135 uint16_t hci_max_acl_data_packet_length(void); 1136 1137 /** 1138 * Get supported packet types. Called by L2CAP 1139 */ 1140 uint16_t hci_usable_acl_packet_types(void); 1141 1142 /** 1143 * Check if ACL packets marked as non flushable can be sent. Called by L2CAP 1144 */ 1145 int hci_non_flushable_packet_boundary_flag_supported(void); 1146 1147 /** 1148 * Check if extended SCO Link is supported 1149 */ 1150 int hci_extended_sco_link_supported(void); 1151 1152 /** 1153 * Check if SSP is supported on both sides. Called by L2CAP 1154 */ 1155 int gap_ssp_supported_on_both_sides(hci_con_handle_t handle); 1156 1157 /** 1158 * Disconn because of security block. Called by L2CAP 1159 */ 1160 void hci_disconnect_security_block(hci_con_handle_t con_handle); 1161 1162 /** 1163 * Query if remote side supports eSCO 1164 */ 1165 int hci_remote_esco_supported(hci_con_handle_t con_handle); 1166 1167 /** 1168 * Emit current HCI state. Called by daemon 1169 */ 1170 void hci_emit_state(void); 1171 1172 /** 1173 * Send complete CMD packet. Called by daemon and hci_send_cmd_va_arg 1174 * @returns 0 if command was successfully sent to HCI Transport layer 1175 */ 1176 int hci_send_cmd_packet(uint8_t *packet, int size); 1177 1178 /** 1179 * Disconnect all HCI connections. Called by daemon 1180 */ 1181 void hci_disconnect_all(void); 1182 1183 /** 1184 * Get number of free acl slots for packets of given handle. Called by daemon 1185 */ 1186 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 1187 1188 /** 1189 * @brief Set Advertisement Parameters 1190 * @param adv_int_min 1191 * @param adv_int_max 1192 * @param adv_type 1193 * @param direct_address_type 1194 * @param direct_address 1195 * @param channel_map 1196 * @param filter_policy 1197 * 1198 * @note internal use. use gap_advertisements_set_params from gap.h instead. 1199 */ 1200 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 1201 uint8_t direct_address_typ, bd_addr_t direct_address, uint8_t channel_map, uint8_t filter_policy); 1202 1203 /** 1204 * 1205 * @note internal use. use gap_random_address_set_mode from gap.h instead. 1206 */ 1207 void hci_le_set_own_address_type(uint8_t own_address_type); 1208 1209 /** 1210 * @brief Get Manufactured 1211 * @return manufacturer id 1212 */ 1213 uint16_t hci_get_manufacturer(void); 1214 1215 // Only for PTS testing 1216 1217 /** 1218 * Disable automatic L2CAP disconnect if no L2CAP connection is established 1219 */ 1220 void hci_disable_l2cap_timeout_check(void); 1221 1222 /** 1223 * Get state 1224 */ 1225 HCI_STATE hci_get_state(void); 1226 1227 /** 1228 * Defer halt. Used by btstack_crypto to allow current HCI operation to complete 1229 */ 1230 void hci_halting_defer(void); 1231 1232 #if defined __cplusplus 1233 } 1234 #endif 1235 1236 #endif // HCI_H 1237