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 /** 259 * Connection State 260 */ 261 typedef enum { 262 AUTH_FLAGS_NONE = 0x0000, 263 RECV_LINK_KEY_REQUEST = 0x0001, 264 HANDLE_LINK_KEY_REQUEST = 0x0002, 265 SENT_LINK_KEY_REPLY = 0x0004, 266 SENT_LINK_KEY_NEGATIVE_REQUEST = 0x0008, 267 RECV_LINK_KEY_NOTIFICATION = 0x0010, 268 DENY_PIN_CODE_REQUEST = 0x0040, 269 RECV_IO_CAPABILITIES_REQUEST = 0x0080, 270 SEND_IO_CAPABILITIES_REPLY = 0x0100, 271 SEND_USER_CONFIRM_REPLY = 0x0200, 272 SEND_USER_PASSKEY_REPLY = 0x0400, 273 274 // pairing status 275 LEGACY_PAIRING_ACTIVE = 0x2000, 276 SSP_PAIRING_ACTIVE = 0x4000, 277 278 // connection status 279 CONNECTION_ENCRYPTED = 0x8000, 280 } hci_authentication_flags_t; 281 282 typedef enum { 283 SEND_CREATE_CONNECTION = 0, 284 SENT_CREATE_CONNECTION, 285 SEND_CANCEL_CONNECTION, 286 SENT_CANCEL_CONNECTION, 287 RECEIVED_CONNECTION_REQUEST, 288 ACCEPTED_CONNECTION_REQUEST, 289 REJECTED_CONNECTION_REQUEST, 290 OPEN, 291 SEND_DISCONNECT, 292 SENT_DISCONNECT 293 } CONNECTION_STATE; 294 295 typedef enum { 296 BONDING_REQUEST_REMOTE_FEATURES = 0x01, 297 BONDING_RECEIVED_REMOTE_FEATURES = 0x02, 298 BONDING_REMOTE_SUPPORTS_SSP = 0x04, 299 BONDING_DISCONNECT_SECURITY_BLOCK = 0x08, 300 BONDING_DISCONNECT_DEDICATED_DONE = 0x10, 301 BONDING_SEND_AUTHENTICATE_REQUEST = 0x20, 302 BONDING_SEND_ENCRYPTION_REQUEST = 0x40, 303 BONDING_DEDICATED = 0x80, 304 BONDING_EMIT_COMPLETE_ON_DISCONNECT = 0x100 305 } bonding_flags_t; 306 307 typedef enum { 308 BLUETOOTH_OFF = 1, 309 BLUETOOTH_ON, 310 BLUETOOTH_ACTIVE 311 } BLUETOOTH_STATE; 312 313 // le central scanning state 314 typedef enum { 315 LE_SCAN_IDLE, 316 LE_START_SCAN, 317 LE_SCANNING, 318 LE_STOP_SCAN, 319 } le_scanning_state_t; 320 321 322 typedef struct { 323 // linked list - assert: first field 324 linked_item_t item; 325 326 // remote side 327 bd_addr_t address; 328 329 // module handle 330 hci_con_handle_t con_handle; 331 332 // le public, le random, classic 333 bd_addr_type_t address_type; 334 335 // connection state 336 CONNECTION_STATE state; 337 338 // bonding 339 uint16_t bonding_flags; 340 uint8_t bonding_status; 341 // requested security level 342 gap_security_level_t requested_security_level; 343 344 // 345 link_key_type_t link_key_type; 346 347 // errands 348 uint32_t authentication_flags; 349 350 timer_source_t timeout; 351 352 #ifdef HAVE_TIME 353 // timer 354 struct timeval timestamp; 355 #endif 356 #ifdef HAVE_TICK 357 uint32_t timestamp; // timeout in system ticks 358 #endif 359 360 // ACL packet recombination - ACL Header + ACL payload 361 uint8_t acl_recombination_buffer[4 + HCI_ACL_BUFFER_SIZE]; 362 uint16_t acl_recombination_pos; 363 uint16_t acl_recombination_length; 364 365 // number ACL packets sent to controller 366 uint8_t num_acl_packets_sent; 367 368 // connection parameter update 369 le_con_parameter_update_state_t le_con_parameter_update_state; 370 uint16_t le_conn_interval_min; 371 uint16_t le_conn_interval_max; 372 uint16_t le_conn_latency; 373 uint16_t le_supervision_timeout; 374 uint16_t le_update_con_parameter_response; 375 } hci_connection_t; 376 377 378 /** 379 * main data structure 380 */ 381 typedef struct { 382 // transport component with configuration 383 hci_transport_t * hci_transport; 384 void * config; 385 386 // bsic configuration 387 const char * local_name; 388 uint32_t class_of_device; 389 bd_addr_t local_bd_addr; 390 uint8_t ssp_enable; 391 uint8_t ssp_io_capability; 392 uint8_t ssp_authentication_requirement; 393 uint8_t ssp_auto_accept; 394 395 // hardware power controller 396 bt_control_t * control; 397 398 // list of existing baseband connections 399 linked_list_t connections; 400 401 // single buffer for HCI packet assembly 402 uint8_t hci_packet_buffer[HCI_PACKET_BUFFER_SIZE]; // opcode (16), len(8) 403 uint8_t hci_packet_buffer_reserved; 404 uint16_t acl_fragmentation_pos; 405 uint16_t acl_fragmentation_total_size; 406 407 /* host to controller flow control */ 408 uint8_t num_cmd_packets; 409 // uint8_t total_num_cmd_packets; 410 uint8_t acl_packets_total_num; 411 uint16_t acl_data_packet_length; 412 uint8_t le_acl_packets_total_num; 413 uint16_t le_data_packets_length; 414 415 /* local supported features */ 416 uint8_t local_supported_features[8]; 417 418 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 419 uint16_t packet_types; 420 421 /* callback to L2CAP layer */ 422 void (*packet_handler)(uint8_t packet_type, uint8_t *packet, uint16_t size); 423 424 /* remote device db */ 425 remote_device_db_t const*remote_device_db; 426 427 /* hci state machine */ 428 HCI_STATE state; 429 uint8_t substate; 430 uint8_t cmds_ready; 431 432 uint16_t last_cmd_opcode; 433 434 uint8_t discoverable; 435 uint8_t connectable; 436 uint8_t bondable; 437 438 /* buffer for scan enable cmd - 0xff no change */ 439 uint8_t new_scan_enable_value; 440 441 // buffer for single connection decline 442 uint8_t decline_reason; 443 bd_addr_t decline_addr; 444 445 uint8_t adv_addr_type; 446 bd_addr_t adv_address; 447 448 le_scanning_state_t le_scanning_state; 449 450 // buffer for le scan type command - 0xff not set 451 uint8_t le_scan_type; 452 uint16_t le_scan_interval; 453 uint16_t le_scan_window; 454 455 le_connection_parameter_range_t le_connection_parameter_range; 456 } hci_stack_t; 457 458 /** 459 * set connection iterator 460 */ 461 void hci_connections_get_iterator(linked_list_iterator_t *it); 462 463 le_connection_parameter_range_t gap_le_get_connection_parameter_range(); 464 void gap_le_set_connection_parameter_range(le_connection_parameter_range_t range); 465 466 //*************** le client start 467 468 le_command_status_t le_central_start_scan(void); 469 le_command_status_t le_central_stop_scan(void); 470 le_command_status_t le_central_connect(bd_addr_t * addr, bd_addr_type_t addr_type); 471 le_command_status_t le_central_connect_cancel(void); 472 le_command_status_t gap_disconnect(hci_con_handle_t handle); 473 void le_central_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window); 474 475 //*************** le client end 476 477 // create and send hci command packets based on a template and a list of parameters 478 uint16_t hci_create_cmd(uint8_t *hci_cmd_buffer, hci_cmd_t *cmd, ...); 479 uint16_t hci_create_cmd_internal(uint8_t *hci_cmd_buffer, const hci_cmd_t *cmd, va_list argptr); 480 481 void hci_connectable_control(uint8_t enable); 482 void hci_close(void); 483 484 /** 485 * run the hci control loop once 486 */ 487 void hci_run(void); 488 489 // send complete CMD packet 490 int hci_send_cmd_packet(uint8_t *packet, int size); 491 492 // send ACL packet prepared in hci packet buffer 493 int hci_send_acl_packet_buffer(int size); 494 495 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 496 int hci_can_send_command_packet_now(void); 497 int hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 498 int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 499 500 // non-blocking UART driver needs 501 // @deprecated use hci_can_send_X_now instead 502 int hci_can_send_packet_now(uint8_t packet_type); 503 504 // same as hci_can_send_packet_now, but also checks if packet buffer is free for use 505 // @deprecated use hci_can_send_X_now instead 506 int hci_can_send_packet_now_using_packet_buffer(uint8_t packet_type); 507 508 // reserves outgoing packet buffer. @returns 1 if successful 509 int hci_reserve_packet_buffer(void); 510 void hci_release_packet_buffer(void); 511 512 // used for internal checks in l2cap[-le].c 513 int hci_is_packet_buffer_reserved(void); 514 515 // get point to packet buffer 516 uint8_t* hci_get_outgoing_packet_buffer(void); 517 518 bd_addr_t * hci_local_bd_addr(void); 519 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 520 hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t *addr, bd_addr_type_t addr_type); 521 int hci_is_le_connection(hci_connection_t * connection); 522 uint8_t hci_number_outgoing_packets(hci_con_handle_t handle); 523 uint8_t hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 524 int hci_authentication_active_for_handle(hci_con_handle_t handle); 525 uint16_t hci_max_acl_data_packet_length(void); 526 uint16_t hci_max_acl_le_data_packet_length(void); 527 uint16_t hci_usable_acl_packet_types(void); 528 int hci_non_flushable_packet_boundary_flag_supported(void); 529 530 void hci_disconnect_all(void); 531 532 void hci_emit_state(void); 533 void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status); 534 void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 535 void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason); 536 void hci_emit_nr_connections_changed(void); 537 void hci_emit_hci_open_failed(void); 538 void hci_emit_btstack_version(void); 539 void hci_emit_system_bluetooth_enabled(uint8_t enabled); 540 void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name); 541 void hci_emit_discoverable_enabled(uint8_t enabled); 542 void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 543 void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 544 545 // query if remote side supports SSP 546 // query if the local side supports SSP 547 int hci_local_ssp_activated(void); 548 549 // query if the remote side supports SSP 550 int hci_remote_ssp_supported(hci_con_handle_t con_handle); 551 552 // query if both sides support SSP 553 int hci_ssp_supported_on_both_sides(hci_con_handle_t handle); 554 555 // disable automatic l2cap disconnect for testing 556 void hci_disable_l2cap_timeout_check(void); 557 558 // disconnect because of security block 559 void hci_disconnect_security_block(hci_con_handle_t con_handle); 560 561 /** Embedded API **/ 562 563 // Set up HCI. Needs to be called before any other function 564 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t const* remote_device_db); 565 566 // Set class of device that will be set during Bluetooth init 567 void hci_set_class_of_device(uint32_t class_of_device); 568 569 // Registers a packet handler. Used if L2CAP is not used (rarely). 570 void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)); 571 572 // Requests the change of BTstack power mode. 573 int hci_power_control(HCI_POWER_MODE mode); 574 575 // Allows to control if device is discoverable. OFF by default. 576 void hci_discoverable_control(uint8_t enable); 577 578 // Creates and sends HCI command packets based on a template and 579 // a list of parameters. Will return error if outgoing data buffer 580 // is occupied. 581 int hci_send_cmd(const hci_cmd_t *cmd, ...); 582 583 // Deletes link key for remote device with baseband address. 584 void hci_drop_link_key_for_bd_addr(bd_addr_t *addr); 585 586 // Configure Secure Simple Pairing 587 588 // enable will enable SSP during init 589 void hci_ssp_set_enable(int enable); 590 591 // if set, BTstack will respond to io capability request using authentication requirement 592 void hci_ssp_set_io_capability(int ssp_io_capability); 593 void hci_ssp_set_authentication_requirement(int authentication_requirement); 594 595 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 596 void hci_ssp_set_auto_accept(int auto_accept); 597 598 // get addr type and address used in advertisement packets 599 void hci_le_advertisement_address(uint8_t * addr_type, bd_addr_t * addr); 600 601 602 #if defined __cplusplus 603 } 604 #endif 605 606 #endif // __HCI_H 607