1 /* 2 * Copyright (C) 2009-2012 by Matthias Ringwald 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 MATTHIAS RINGWALD 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 [email protected] 34 * 35 */ 36 37 /* 38 * hci.h 39 * 40 * Created by Matthias Ringwald on 4/29/09. 41 * 42 */ 43 44 #ifndef __HCI_H 45 #define __HCI_H 46 47 #include "btstack-config.h" 48 49 #include <btstack/hci_cmds.h> 50 #include <btstack/utils.h> 51 #include "hci_transport.h" 52 #include "bt_control.h" 53 #include "remote_device_db.h" 54 55 #include <stdint.h> 56 #include <stdlib.h> 57 #include <stdarg.h> 58 #include <btstack/linked_list.h> 59 60 #if defined __cplusplus 61 extern "C" { 62 #endif 63 64 // packet header sizes 65 #define HCI_CMD_HEADER_SIZE 3 66 #define HCI_ACL_HEADER_SIZE 4 67 #define HCI_SCO_HEADER_SIZE 3 68 #define HCI_EVENT_HEADER_SIZE 2 69 70 // packet sizes (max payload) 71 #define HCI_ACL_DM1_SIZE 17 72 #define HCI_ACL_DH1_SIZE 27 73 #define HCI_ACL_2DH1_SIZE 54 74 #define HCI_ACL_3DH1_SIZE 83 75 #define HCI_ACL_DM3_SIZE 121 76 #define HCI_ACL_DH3_SIZE 183 77 #define HCI_ACL_DM5_SIZE 224 78 #define HCI_ACL_DH5_SIZE 339 79 #define HCI_ACL_2DH3_SIZE 367 80 #define HCI_ACL_3DH3_SIZE 552 81 #define HCI_ACL_2DH5_SIZE 679 82 #define HCI_ACL_3DH5_SIZE 1021 83 84 #define HCI_EVENT_PAYLOAD_SIZE 255 85 #define HCI_CMD_PAYLOAD_SIZE 255 86 87 // packet buffer sizes 88 // HCI_ACL_PAYLOAD_SIZE is configurable and defined in config.h 89 #define HCI_EVENT_BUFFER_SIZE (HCI_EVENT_HEADER_SIZE + HCI_EVENT_PAYLOAD_SIZE) 90 #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE) 91 #define HCI_ACL_BUFFER_SIZE (HCI_ACL_HEADER_SIZE + HCI_ACL_PAYLOAD_SIZE) 92 93 // size of hci buffers, big enough for command, event, or acl packet without H4 packet type 94 // @note cmd buffer is bigger than event buffer 95 #ifdef HCI_PACKET_BUFFER_SIZE 96 #if HCI_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE 97 #error HCI_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE 98 #endif 99 #if HCI_PACKET_BUFFER_SIZE < HCI_CMD_BUFFER_SIZE 100 #error HCI_PACKET_BUFFER_SIZE must be equal or larger than HCI_CMD_BUFFER_SIZE 101 #endif 102 #else 103 #if HCI_ACL_BUFFER_SIZE > HCI_CMD_BUFFER_SIZE 104 #define HCI_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE 105 #else 106 #define HCI_PACKET_BUFFER_SIZE HCI_CMD_BUFFER_SIZE 107 #endif 108 #endif 109 110 // OGFs 111 #define OGF_LINK_CONTROL 0x01 112 #define OGF_LINK_POLICY 0x02 113 #define OGF_CONTROLLER_BASEBAND 0x03 114 #define OGF_INFORMATIONAL_PARAMETERS 0x04 115 #define OGF_STATUS_PARAMETERS 0x05 116 #define OGF_LE_CONTROLLER 0x08 117 #define OGF_BTSTACK 0x3d 118 #define OGF_VENDOR 0x3f 119 120 // cmds for BTstack 121 // get state: @returns HCI_STATE 122 #define BTSTACK_GET_STATE 0x01 123 124 // set power mode: @param HCI_POWER_MODE 125 #define BTSTACK_SET_POWER_MODE 0x02 126 127 // set capture mode: @param on 128 #define BTSTACK_SET_ACL_CAPTURE_MODE 0x03 129 130 // get BTstack version 131 #define BTSTACK_GET_VERSION 0x04 132 133 // get system Bluetooth state 134 #define BTSTACK_GET_SYSTEM_BLUETOOTH_ENABLED 0x05 135 136 // set system Bluetooth state 137 #define BTSTACK_SET_SYSTEM_BLUETOOTH_ENABLED 0x06 138 139 // enable inquiry scan for this client 140 #define BTSTACK_SET_DISCOVERABLE 0x07 141 142 // set global Bluetooth state 143 #define BTSTACK_SET_BLUETOOTH_ENABLED 0x08 144 145 // create l2cap channel: @param bd_addr(48), psm (16) 146 #define L2CAP_CREATE_CHANNEL 0x20 147 148 // disconnect l2cap disconnect, @param channel(16), reason(8) 149 #define L2CAP_DISCONNECT 0x21 150 151 // register l2cap service: @param psm(16), mtu (16) 152 #define L2CAP_REGISTER_SERVICE 0x22 153 154 // unregister l2cap disconnect, @param psm(16) 155 #define L2CAP_UNREGISTER_SERVICE 0x23 156 157 // accept connection @param bd_addr(48), dest cid (16) 158 #define L2CAP_ACCEPT_CONNECTION 0x24 159 160 // decline l2cap disconnect,@param bd_addr(48), dest cid (16), reason(8) 161 #define L2CAP_DECLINE_CONNECTION 0x25 162 163 // create l2cap channel: @param bd_addr(48), psm (16), mtu (16) 164 #define L2CAP_CREATE_CHANNEL_MTU 0x26 165 166 // register SDP Service Record: service record (size) 167 #define SDP_REGISTER_SERVICE_RECORD 0x30 168 169 // unregister SDP Service Record 170 #define SDP_UNREGISTER_SERVICE_RECORD 0x31 171 172 // Get remote RFCOMM services 173 #define SDP_CLIENT_QUERY_RFCOMM_SERVICES 0x32 174 175 // Get remote SDP services 176 #define SDP_CLIENT_QUERY_SERVICES 0x33 177 178 // RFCOMM "HCI" Commands 179 #define RFCOMM_CREATE_CHANNEL 0x40 180 #define RFCOMM_DISCONNECT 0x41 181 #define RFCOMM_REGISTER_SERVICE 0x42 182 #define RFCOMM_UNREGISTER_SERVICE 0x43 183 #define RFCOMM_ACCEPT_CONNECTION 0x44 184 #define RFCOMM_DECLINE_CONNECTION 0x45 185 #define RFCOMM_PERSISTENT_CHANNEL 0x46 186 #define RFCOMM_CREATE_CHANNEL_WITH_CREDITS 0x47 187 #define RFCOMM_REGISTER_SERVICE_WITH_CREDITS 0x48 188 #define RFCOMM_GRANT_CREDITS 0x49 189 190 // GAP Classic 0x50 191 #define GAP_DISCONNECT 0x50 192 193 // GAP LE 0x60 194 #define GAP_LE_SCAN_START 0x60 195 #define GAP_LE_SCAN_STOP 0x61 196 #define GAP_LE_CONNECT 0x62 197 #define GAP_LE_CONNECT_CANCEL 0x63 198 #define GAP_LE_SET_SCAN_PARAMETERS 0x64 199 200 // GATT (Client) 0x70 201 #define GATT_DISCOVER_ALL_PRIMARY_SERVICES 0x70 202 #define GATT_DISCOVER_PRIMARY_SERVICES_BY_UUID16 0x71 203 #define GATT_DISCOVER_PRIMARY_SERVICES_BY_UUID128 0x72 204 #define GATT_FIND_INCLUDED_SERVICES_FOR_SERVICE 0x73 205 #define GATT_DISCOVER_CHARACTERISTICS_FOR_SERVICE 0x74 206 #define GATT_DISCOVER_CHARACTERISTICS_FOR_SERVICE_BY_UUID128 0x75 207 #define GATT_DISCOVER_CHARACTERISTIC_DESCRIPTORS 0x76 208 #define GATT_READ_VALUE_OF_CHARACTERISTIC 0x77 209 #define GATT_READ_LONG_VALUE_OF_CHARACTERISTIC 0x78 210 #define GATT_WRITE_VALUE_OF_CHARACTERISTIC_WITHOUT_RESPONSE 0x79 211 #define GATT_WRITE_VALUE_OF_CHARACTERISTIC 0x7A 212 #define GATT_WRITE_LONG_VALUE_OF_CHARACTERISTIC 0x7B 213 #define GATT_RELIABLE_WRITE_LONG_VALUE_OF_CHARACTERISTIC 0x7C 214 #define GATT_READ_CHARACTERISTIC_DESCRIPTOR 0X7D 215 #define GATT_READ_LONG_CHARACTERISTIC_DESCRIPTOR 0X7E 216 #define GATT_WRITE_CHARACTERISTIC_DESCRIPTOR 0X7F 217 #define GATT_WRITE_LONG_CHARACTERISTIC_DESCRIPTOR 0X80 218 #define GATT_WRITE_CLIENT_CHARACTERISTIC_CONFIGURATION 0X81 219 220 // 221 #define IS_COMMAND(packet, command) (READ_BT_16(packet,0) == command.opcode) 222 223 // data: event(8) 224 #define DAEMON_EVENT_CONNECTION_OPENED 0x50 225 226 // data: event(8) 227 #define DAEMON_EVENT_CONNECTION_CLOSED 0x51 228 229 // data: event(8), nr_connections(8) 230 #define DAEMON_NR_CONNECTIONS_CHANGED 0x52 231 232 // data: event(8) 233 #define DAEMON_EVENT_NEW_RFCOMM_CREDITS 0x53 234 235 // data: event(8) 236 #define DAEMON_EVENT_HCI_PACKET_SENT 0x54 237 238 /** 239 * LE connection parameter update state 240 */ 241 242 typedef enum { 243 CON_PARAMETER_UPDATE_NONE, 244 CON_PARAMETER_UPDATE_SEND_RESPONSE, 245 CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS, 246 CON_PARAMETER_UPDATE_DENY 247 } le_con_parameter_update_state_t; 248 249 typedef struct le_connection_parameter_range{ 250 uint16_t le_conn_interval_min; 251 uint16_t le_conn_interval_max; 252 uint16_t le_conn_latency_min; 253 uint16_t le_conn_latency_max; 254 uint16_t le_supervision_timeout_min; 255 uint16_t le_supervision_timeout_max; 256 } le_connection_parameter_range_t; 257 258 // Authentication flags 259 typedef enum { 260 AUTH_FLAGS_NONE = 0x0000, 261 RECV_LINK_KEY_REQUEST = 0x0001, 262 HANDLE_LINK_KEY_REQUEST = 0x0002, 263 SENT_LINK_KEY_REPLY = 0x0004, 264 SENT_LINK_KEY_NEGATIVE_REQUEST = 0x0008, 265 RECV_LINK_KEY_NOTIFICATION = 0x0010, 266 DENY_PIN_CODE_REQUEST = 0x0040, 267 RECV_IO_CAPABILITIES_REQUEST = 0x0080, 268 SEND_IO_CAPABILITIES_REPLY = 0x0100, 269 SEND_USER_CONFIRM_REPLY = 0x0200, 270 SEND_USER_PASSKEY_REPLY = 0x0400, 271 272 // pairing status 273 LEGACY_PAIRING_ACTIVE = 0x2000, 274 SSP_PAIRING_ACTIVE = 0x4000, 275 276 // connection status 277 CONNECTION_ENCRYPTED = 0x8000, 278 } hci_authentication_flags_t; 279 280 /** 281 * Connection State 282 */ 283 typedef enum { 284 SEND_CREATE_CONNECTION = 0, 285 SENT_CREATE_CONNECTION, 286 SEND_CANCEL_CONNECTION, 287 SENT_CANCEL_CONNECTION, 288 RECEIVED_CONNECTION_REQUEST, 289 ACCEPTED_CONNECTION_REQUEST, 290 REJECTED_CONNECTION_REQUEST, 291 OPEN, 292 SEND_DISCONNECT, 293 SENT_DISCONNECT 294 } CONNECTION_STATE; 295 296 // bonding flags 297 enum { 298 BONDING_REQUEST_REMOTE_FEATURES = 0x01, 299 BONDING_RECEIVED_REMOTE_FEATURES = 0x02, 300 BONDING_REMOTE_SUPPORTS_SSP = 0x04, 301 BONDING_DISCONNECT_SECURITY_BLOCK = 0x08, 302 BONDING_DISCONNECT_DEDICATED_DONE = 0x10, 303 BONDING_SEND_AUTHENTICATE_REQUEST = 0x20, 304 BONDING_SEND_ENCRYPTION_REQUEST = 0x40, 305 BONDING_DEDICATED = 0x80, 306 BONDING_EMIT_COMPLETE_ON_DISCONNECT = 0x100 307 }; 308 309 typedef enum { 310 BLUETOOTH_OFF = 1, 311 BLUETOOTH_ON, 312 BLUETOOTH_ACTIVE 313 } BLUETOOTH_STATE; 314 315 // le central scanning state 316 typedef enum { 317 LE_SCAN_IDLE, 318 LE_START_SCAN, 319 LE_SCANNING, 320 LE_STOP_SCAN, 321 } le_scanning_state_t; 322 323 324 typedef struct { 325 // linked list - assert: first field 326 linked_item_t item; 327 328 // remote side 329 bd_addr_t address; 330 331 // module handle 332 hci_con_handle_t con_handle; 333 334 // le public, le random, classic 335 bd_addr_type_t address_type; 336 337 // connection state 338 CONNECTION_STATE state; 339 340 // bonding 341 uint16_t bonding_flags; 342 uint8_t bonding_status; 343 // requested security level 344 gap_security_level_t requested_security_level; 345 346 // 347 link_key_type_t link_key_type; 348 349 // errands 350 uint32_t authentication_flags; 351 352 timer_source_t timeout; 353 354 #ifdef HAVE_TIME 355 // timer 356 struct timeval timestamp; 357 #endif 358 #ifdef HAVE_TICK 359 uint32_t timestamp; // timeout in system ticks 360 #endif 361 362 // ACL packet recombination - ACL Header + ACL payload 363 uint8_t acl_recombination_buffer[4 + HCI_ACL_BUFFER_SIZE]; 364 uint16_t acl_recombination_pos; 365 uint16_t acl_recombination_length; 366 367 // number ACL packets sent to controller 368 uint8_t num_acl_packets_sent; 369 370 // connection parameter update 371 le_con_parameter_update_state_t le_con_parameter_update_state; 372 uint16_t le_conn_interval_min; 373 uint16_t le_conn_interval_max; 374 uint16_t le_conn_latency; 375 uint16_t le_supervision_timeout; 376 uint16_t le_update_con_parameter_response; 377 } hci_connection_t; 378 379 380 /** 381 * main data structure 382 */ 383 typedef struct { 384 // transport component with configuration 385 hci_transport_t * hci_transport; 386 void * config; 387 388 // bsic configuration 389 const char * local_name; 390 uint32_t class_of_device; 391 bd_addr_t local_bd_addr; 392 uint8_t ssp_enable; 393 uint8_t ssp_io_capability; 394 uint8_t ssp_authentication_requirement; 395 uint8_t ssp_auto_accept; 396 397 // hardware power controller 398 bt_control_t * control; 399 400 // list of existing baseband connections 401 linked_list_t connections; 402 403 // single buffer for HCI packet assembly 404 uint8_t hci_packet_buffer[HCI_PACKET_BUFFER_SIZE]; // opcode (16), len(8) 405 uint8_t hci_packet_buffer_reserved; 406 uint16_t acl_fragmentation_pos; 407 uint16_t acl_fragmentation_total_size; 408 409 /* host to controller flow control */ 410 uint8_t num_cmd_packets; 411 // uint8_t total_num_cmd_packets; 412 uint8_t acl_packets_total_num; 413 uint16_t acl_data_packet_length; 414 uint8_t le_acl_packets_total_num; 415 uint16_t le_data_packets_length; 416 417 /* local supported features */ 418 uint8_t local_supported_features[8]; 419 420 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 421 uint16_t packet_types; 422 423 /* callback to L2CAP layer */ 424 void (*packet_handler)(uint8_t packet_type, uint8_t *packet, uint16_t size); 425 426 /* remote device db */ 427 remote_device_db_t const*remote_device_db; 428 429 /* hci state machine */ 430 HCI_STATE state; 431 uint8_t substate; 432 uint8_t cmds_ready; 433 434 uint16_t last_cmd_opcode; 435 436 uint8_t discoverable; 437 uint8_t connectable; 438 uint8_t bondable; 439 440 /* buffer for scan enable cmd - 0xff no change */ 441 uint8_t new_scan_enable_value; 442 443 // buffer for single connection decline 444 uint8_t decline_reason; 445 bd_addr_t decline_addr; 446 447 uint8_t adv_addr_type; 448 bd_addr_t adv_address; 449 450 le_scanning_state_t le_scanning_state; 451 452 // buffer for le scan type command - 0xff not set 453 uint8_t le_scan_type; 454 uint16_t le_scan_interval; 455 uint16_t le_scan_window; 456 457 le_connection_parameter_range_t le_connection_parameter_range; 458 } hci_stack_t; 459 460 /** 461 * set connection iterator 462 */ 463 void hci_connections_get_iterator(linked_list_iterator_t *it); 464 465 le_connection_parameter_range_t gap_le_get_connection_parameter_range(); 466 void gap_le_set_connection_parameter_range(le_connection_parameter_range_t range); 467 468 // *************** le client start 469 470 le_command_status_t le_central_start_scan(void); 471 le_command_status_t le_central_stop_scan(void); 472 le_command_status_t le_central_connect(bd_addr_t * addr, bd_addr_type_t addr_type); 473 le_command_status_t le_central_connect_cancel(void); 474 le_command_status_t gap_disconnect(hci_con_handle_t handle); 475 void le_central_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window); 476 477 // *************** le client end 478 479 // create and send hci command packets based on a template and a list of parameters 480 uint16_t hci_create_cmd(uint8_t *hci_cmd_buffer, hci_cmd_t *cmd, ...); 481 uint16_t hci_create_cmd_internal(uint8_t *hci_cmd_buffer, const hci_cmd_t *cmd, va_list argptr); 482 483 void hci_connectable_control(uint8_t enable); 484 void hci_close(void); 485 486 /** 487 * run the hci control loop once 488 */ 489 void hci_run(void); 490 491 // send complete CMD packet 492 int hci_send_cmd_packet(uint8_t *packet, int size); 493 494 // send ACL packet prepared in hci packet buffer 495 int hci_send_acl_packet_buffer(int size); 496 497 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 498 int hci_can_send_command_packet_now(void); 499 int hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 500 int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 501 502 // non-blocking UART driver needs 503 // @deprecated use hci_can_send_X_now instead 504 int hci_can_send_packet_now(uint8_t packet_type); 505 506 // same as hci_can_send_packet_now, but also checks if packet buffer is free for use 507 // @deprecated use hci_can_send_X_now instead 508 int hci_can_send_packet_now_using_packet_buffer(uint8_t packet_type); 509 510 // reserves outgoing packet buffer. @returns 1 if successful 511 int hci_reserve_packet_buffer(void); 512 void hci_release_packet_buffer(void); 513 514 // used for internal checks in l2cap[-le].c 515 int hci_is_packet_buffer_reserved(void); 516 517 // get point to packet buffer 518 uint8_t* hci_get_outgoing_packet_buffer(void); 519 520 bd_addr_t * hci_local_bd_addr(void); 521 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 522 hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t *addr, bd_addr_type_t addr_type); 523 int hci_is_le_connection(hci_connection_t * connection); 524 uint8_t hci_number_outgoing_packets(hci_con_handle_t handle); 525 uint8_t hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 526 int hci_authentication_active_for_handle(hci_con_handle_t handle); 527 uint16_t hci_max_acl_data_packet_length(void); 528 uint16_t hci_max_acl_le_data_packet_length(void); 529 uint16_t hci_usable_acl_packet_types(void); 530 int hci_non_flushable_packet_boundary_flag_supported(void); 531 532 void hci_disconnect_all(void); 533 534 void hci_emit_state(void); 535 void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status); 536 void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 537 void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason); 538 void hci_emit_nr_connections_changed(void); 539 void hci_emit_hci_open_failed(void); 540 void hci_emit_btstack_version(void); 541 void hci_emit_system_bluetooth_enabled(uint8_t enabled); 542 void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name); 543 void hci_emit_discoverable_enabled(uint8_t enabled); 544 void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 545 void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 546 547 // query if remote side supports SSP 548 // query if the local side supports SSP 549 int hci_local_ssp_activated(void); 550 551 // query if the remote side supports SSP 552 int hci_remote_ssp_supported(hci_con_handle_t con_handle); 553 554 // query if both sides support SSP 555 int hci_ssp_supported_on_both_sides(hci_con_handle_t handle); 556 557 // disable automatic l2cap disconnect for testing 558 void hci_disable_l2cap_timeout_check(void); 559 560 // disconnect because of security block 561 void hci_disconnect_security_block(hci_con_handle_t con_handle); 562 563 /** Embedded API **/ 564 565 // Set up HCI. Needs to be called before any other function 566 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t const* remote_device_db); 567 568 // Set class of device that will be set during Bluetooth init 569 void hci_set_class_of_device(uint32_t class_of_device); 570 571 // Registers a packet handler. Used if L2CAP is not used (rarely). 572 void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)); 573 574 // Requests the change of BTstack power mode. 575 int hci_power_control(HCI_POWER_MODE mode); 576 577 // Allows to control if device is discoverable. OFF by default. 578 void hci_discoverable_control(uint8_t enable); 579 580 // Creates and sends HCI command packets based on a template and 581 // a list of parameters. Will return error if outgoing data buffer 582 // is occupied. 583 int hci_send_cmd(const hci_cmd_t *cmd, ...); 584 585 // Deletes link key for remote device with baseband address. 586 void hci_drop_link_key_for_bd_addr(bd_addr_t *addr); 587 588 // Configure Secure Simple Pairing 589 590 // enable will enable SSP during init 591 void hci_ssp_set_enable(int enable); 592 593 // if set, BTstack will respond to io capability request using authentication requirement 594 void hci_ssp_set_io_capability(int ssp_io_capability); 595 void hci_ssp_set_authentication_requirement(int authentication_requirement); 596 597 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 598 void hci_ssp_set_auto_accept(int auto_accept); 599 600 // get addr type and address used in advertisement packets 601 void hci_le_advertisement_address(uint8_t * addr_type, bd_addr_t * addr); 602 603 604 #if defined __cplusplus 605 } 606 #endif 607 608 #endif // __HCI_H 609