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 // additional pre-buffer space for packets to Bluetooth module, for now, used for HCI Transport H4 DMA 111 #define HCI_OUTGOING_PRE_BUFFER_SIZE 1 112 113 // OGFs 114 #define OGF_LINK_CONTROL 0x01 115 #define OGF_LINK_POLICY 0x02 116 #define OGF_CONTROLLER_BASEBAND 0x03 117 #define OGF_INFORMATIONAL_PARAMETERS 0x04 118 #define OGF_STATUS_PARAMETERS 0x05 119 #define OGF_LE_CONTROLLER 0x08 120 #define OGF_BTSTACK 0x3d 121 #define OGF_VENDOR 0x3f 122 123 // cmds for BTstack 124 // get state: @returns HCI_STATE 125 #define BTSTACK_GET_STATE 0x01 126 127 // set power mode: @param HCI_POWER_MODE 128 #define BTSTACK_SET_POWER_MODE 0x02 129 130 // set capture mode: @param on 131 #define BTSTACK_SET_ACL_CAPTURE_MODE 0x03 132 133 // get BTstack version 134 #define BTSTACK_GET_VERSION 0x04 135 136 // get system Bluetooth state 137 #define BTSTACK_GET_SYSTEM_BLUETOOTH_ENABLED 0x05 138 139 // set system Bluetooth state 140 #define BTSTACK_SET_SYSTEM_BLUETOOTH_ENABLED 0x06 141 142 // enable inquiry scan for this client 143 #define BTSTACK_SET_DISCOVERABLE 0x07 144 145 // set global Bluetooth state 146 #define BTSTACK_SET_BLUETOOTH_ENABLED 0x08 147 148 // create l2cap channel: @param bd_addr(48), psm (16) 149 #define L2CAP_CREATE_CHANNEL 0x20 150 151 // disconnect l2cap disconnect, @param channel(16), reason(8) 152 #define L2CAP_DISCONNECT 0x21 153 154 // register l2cap service: @param psm(16), mtu (16) 155 #define L2CAP_REGISTER_SERVICE 0x22 156 157 // unregister l2cap disconnect, @param psm(16) 158 #define L2CAP_UNREGISTER_SERVICE 0x23 159 160 // accept connection @param bd_addr(48), dest cid (16) 161 #define L2CAP_ACCEPT_CONNECTION 0x24 162 163 // decline l2cap disconnect,@param bd_addr(48), dest cid (16), reason(8) 164 #define L2CAP_DECLINE_CONNECTION 0x25 165 166 // create l2cap channel: @param bd_addr(48), psm (16), mtu (16) 167 #define L2CAP_CREATE_CHANNEL_MTU 0x26 168 169 // register SDP Service Record: service record (size) 170 #define SDP_REGISTER_SERVICE_RECORD 0x30 171 172 // unregister SDP Service Record 173 #define SDP_UNREGISTER_SERVICE_RECORD 0x31 174 175 // Get remote RFCOMM services 176 #define SDP_CLIENT_QUERY_RFCOMM_SERVICES 0x32 177 178 // Get remote SDP services 179 #define SDP_CLIENT_QUERY_SERVICES 0x33 180 181 // RFCOMM "HCI" Commands 182 #define RFCOMM_CREATE_CHANNEL 0x40 183 #define RFCOMM_DISCONNECT 0x41 184 #define RFCOMM_REGISTER_SERVICE 0x42 185 #define RFCOMM_UNREGISTER_SERVICE 0x43 186 #define RFCOMM_ACCEPT_CONNECTION 0x44 187 #define RFCOMM_DECLINE_CONNECTION 0x45 188 #define RFCOMM_PERSISTENT_CHANNEL 0x46 189 #define RFCOMM_CREATE_CHANNEL_WITH_CREDITS 0x47 190 #define RFCOMM_REGISTER_SERVICE_WITH_CREDITS 0x48 191 #define RFCOMM_GRANT_CREDITS 0x49 192 193 // GAP Classic 0x50 194 #define GAP_DISCONNECT 0x50 195 196 // GAP LE 0x60 197 #define GAP_LE_SCAN_START 0x60 198 #define GAP_LE_SCAN_STOP 0x61 199 #define GAP_LE_CONNECT 0x62 200 #define GAP_LE_CONNECT_CANCEL 0x63 201 #define GAP_LE_SET_SCAN_PARAMETERS 0x64 202 203 // GATT (Client) 0x70 204 #define GATT_DISCOVER_ALL_PRIMARY_SERVICES 0x70 205 #define GATT_DISCOVER_PRIMARY_SERVICES_BY_UUID16 0x71 206 #define GATT_DISCOVER_PRIMARY_SERVICES_BY_UUID128 0x72 207 #define GATT_FIND_INCLUDED_SERVICES_FOR_SERVICE 0x73 208 #define GATT_DISCOVER_CHARACTERISTICS_FOR_SERVICE 0x74 209 #define GATT_DISCOVER_CHARACTERISTICS_FOR_SERVICE_BY_UUID128 0x75 210 #define GATT_DISCOVER_CHARACTERISTIC_DESCRIPTORS 0x76 211 #define GATT_READ_VALUE_OF_CHARACTERISTIC 0x77 212 #define GATT_READ_LONG_VALUE_OF_CHARACTERISTIC 0x78 213 #define GATT_WRITE_VALUE_OF_CHARACTERISTIC_WITHOUT_RESPONSE 0x79 214 #define GATT_WRITE_VALUE_OF_CHARACTERISTIC 0x7A 215 #define GATT_WRITE_LONG_VALUE_OF_CHARACTERISTIC 0x7B 216 #define GATT_RELIABLE_WRITE_LONG_VALUE_OF_CHARACTERISTIC 0x7C 217 #define GATT_READ_CHARACTERISTIC_DESCRIPTOR 0X7D 218 #define GATT_READ_LONG_CHARACTERISTIC_DESCRIPTOR 0X7E 219 #define GATT_WRITE_CHARACTERISTIC_DESCRIPTOR 0X7F 220 #define GATT_WRITE_LONG_CHARACTERISTIC_DESCRIPTOR 0X80 221 #define GATT_WRITE_CLIENT_CHARACTERISTIC_CONFIGURATION 0X81 222 223 // 224 #define IS_COMMAND(packet, command) (READ_BT_16(packet,0) == command.opcode) 225 226 // data: event(8) 227 #define DAEMON_EVENT_CONNECTION_OPENED 0x50 228 229 // data: event(8) 230 #define DAEMON_EVENT_CONNECTION_CLOSED 0x51 231 232 // data: event(8), nr_connections(8) 233 #define DAEMON_NR_CONNECTIONS_CHANGED 0x52 234 235 // data: event(8) 236 #define DAEMON_EVENT_NEW_RFCOMM_CREDITS 0x53 237 238 // data: event(8) 239 #define DAEMON_EVENT_HCI_PACKET_SENT 0x54 240 241 /** 242 * LE connection parameter update state 243 */ 244 245 typedef enum { 246 CON_PARAMETER_UPDATE_NONE, 247 CON_PARAMETER_UPDATE_SEND_RESPONSE, 248 CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS, 249 CON_PARAMETER_UPDATE_DENY 250 } le_con_parameter_update_state_t; 251 252 typedef struct le_connection_parameter_range{ 253 uint16_t le_conn_interval_min; 254 uint16_t le_conn_interval_max; 255 uint16_t le_conn_latency_min; 256 uint16_t le_conn_latency_max; 257 uint16_t le_supervision_timeout_min; 258 uint16_t le_supervision_timeout_max; 259 } le_connection_parameter_range_t; 260 261 // Authentication flags 262 typedef enum { 263 AUTH_FLAGS_NONE = 0x0000, 264 RECV_LINK_KEY_REQUEST = 0x0001, 265 HANDLE_LINK_KEY_REQUEST = 0x0002, 266 SENT_LINK_KEY_REPLY = 0x0004, 267 SENT_LINK_KEY_NEGATIVE_REQUEST = 0x0008, 268 RECV_LINK_KEY_NOTIFICATION = 0x0010, 269 DENY_PIN_CODE_REQUEST = 0x0040, 270 RECV_IO_CAPABILITIES_REQUEST = 0x0080, 271 SEND_IO_CAPABILITIES_REPLY = 0x0100, 272 SEND_USER_CONFIRM_REPLY = 0x0200, 273 SEND_USER_PASSKEY_REPLY = 0x0400, 274 275 // pairing status 276 LEGACY_PAIRING_ACTIVE = 0x2000, 277 SSP_PAIRING_ACTIVE = 0x4000, 278 279 // connection status 280 CONNECTION_ENCRYPTED = 0x8000, 281 } hci_authentication_flags_t; 282 283 /** 284 * Connection State 285 */ 286 typedef enum { 287 SEND_CREATE_CONNECTION = 0, 288 SENT_CREATE_CONNECTION, 289 SEND_CANCEL_CONNECTION, 290 SENT_CANCEL_CONNECTION, 291 RECEIVED_CONNECTION_REQUEST, 292 ACCEPTED_CONNECTION_REQUEST, 293 REJECTED_CONNECTION_REQUEST, 294 OPEN, 295 SEND_DISCONNECT, 296 SENT_DISCONNECT 297 } CONNECTION_STATE; 298 299 // bonding flags 300 enum { 301 BONDING_REQUEST_REMOTE_FEATURES = 0x01, 302 BONDING_RECEIVED_REMOTE_FEATURES = 0x02, 303 BONDING_REMOTE_SUPPORTS_SSP = 0x04, 304 BONDING_DISCONNECT_SECURITY_BLOCK = 0x08, 305 BONDING_DISCONNECT_DEDICATED_DONE = 0x10, 306 BONDING_SEND_AUTHENTICATE_REQUEST = 0x20, 307 BONDING_SEND_ENCRYPTION_REQUEST = 0x40, 308 BONDING_DEDICATED = 0x80, 309 BONDING_EMIT_COMPLETE_ON_DISCONNECT = 0x100 310 }; 311 312 typedef enum { 313 BLUETOOTH_OFF = 1, 314 BLUETOOTH_ON, 315 BLUETOOTH_ACTIVE 316 } BLUETOOTH_STATE; 317 318 // le central scanning state 319 typedef enum { 320 LE_SCAN_IDLE, 321 LE_START_SCAN, 322 LE_SCANNING, 323 LE_STOP_SCAN, 324 } le_scanning_state_t; 325 326 327 typedef struct { 328 // linked list - assert: first field 329 linked_item_t item; 330 331 // remote side 332 bd_addr_t address; 333 334 // module handle 335 hci_con_handle_t con_handle; 336 337 // le public, le random, classic 338 bd_addr_type_t address_type; 339 340 // connection state 341 CONNECTION_STATE state; 342 343 // bonding 344 uint16_t bonding_flags; 345 uint8_t bonding_status; 346 // requested security level 347 gap_security_level_t requested_security_level; 348 349 // 350 link_key_type_t link_key_type; 351 352 // errands 353 uint32_t authentication_flags; 354 355 timer_source_t timeout; 356 357 #ifdef HAVE_TIME 358 // timer 359 struct timeval timestamp; 360 #endif 361 #ifdef HAVE_TICK 362 uint32_t timestamp; // timeout in system ticks 363 #endif 364 365 // ACL packet recombination - ACL Header + ACL payload 366 uint8_t acl_recombination_buffer[4 + HCI_ACL_BUFFER_SIZE]; 367 uint16_t acl_recombination_pos; 368 uint16_t acl_recombination_length; 369 370 // number ACL packets sent to controller 371 uint8_t num_acl_packets_sent; 372 373 // connection parameter update 374 le_con_parameter_update_state_t le_con_parameter_update_state; 375 uint16_t le_conn_interval_min; 376 uint16_t le_conn_interval_max; 377 uint16_t le_conn_latency; 378 uint16_t le_supervision_timeout; 379 uint16_t le_update_con_parameter_response; 380 } hci_connection_t; 381 382 383 /** 384 * main data structure 385 */ 386 typedef struct { 387 // transport component with configuration 388 hci_transport_t * hci_transport; 389 void * config; 390 391 // bsic configuration 392 const char * local_name; 393 uint32_t class_of_device; 394 bd_addr_t local_bd_addr; 395 uint8_t ssp_enable; 396 uint8_t ssp_io_capability; 397 uint8_t ssp_authentication_requirement; 398 uint8_t ssp_auto_accept; 399 400 // hardware power controller 401 bt_control_t * control; 402 403 // list of existing baseband connections 404 linked_list_t connections; 405 406 // single buffer for HCI packet assembly + additional prebuffer for H4 drivers 407 uint8_t hci_packet_buffer_prefix[HCI_OUTGOING_PRE_BUFFER_SIZE]; 408 uint8_t hci_packet_buffer[HCI_PACKET_BUFFER_SIZE]; // opcode (16), len(8) 409 uint8_t hci_packet_buffer_reserved; 410 uint16_t acl_fragmentation_pos; 411 uint16_t acl_fragmentation_total_size; 412 413 /* host to controller flow control */ 414 uint8_t num_cmd_packets; 415 // uint8_t total_num_cmd_packets; 416 uint8_t acl_packets_total_num; 417 uint16_t acl_data_packet_length; 418 uint8_t le_acl_packets_total_num; 419 uint16_t le_data_packets_length; 420 421 /* local supported features */ 422 uint8_t local_supported_features[8]; 423 424 // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE 425 uint16_t packet_types; 426 427 /* callback to L2CAP layer */ 428 void (*packet_handler)(uint8_t packet_type, uint8_t *packet, uint16_t size); 429 430 /* remote device db */ 431 remote_device_db_t const*remote_device_db; 432 433 /* hci state machine */ 434 HCI_STATE state; 435 uint8_t substate; 436 uint8_t cmds_ready; 437 438 uint16_t last_cmd_opcode; 439 440 uint8_t discoverable; 441 uint8_t connectable; 442 uint8_t bondable; 443 444 /* buffer for scan enable cmd - 0xff no change */ 445 uint8_t new_scan_enable_value; 446 447 // buffer for single connection decline 448 uint8_t decline_reason; 449 bd_addr_t decline_addr; 450 451 uint8_t adv_addr_type; 452 bd_addr_t adv_address; 453 454 le_scanning_state_t le_scanning_state; 455 456 // buffer for le scan type command - 0xff not set 457 uint8_t le_scan_type; 458 uint16_t le_scan_interval; 459 uint16_t le_scan_window; 460 461 le_connection_parameter_range_t le_connection_parameter_range; 462 } hci_stack_t; 463 464 /** 465 * set connection iterator 466 */ 467 void hci_connections_get_iterator(linked_list_iterator_t *it); 468 469 le_connection_parameter_range_t gap_le_get_connection_parameter_range(); 470 void gap_le_set_connection_parameter_range(le_connection_parameter_range_t range); 471 472 // *************** le client start 473 474 le_command_status_t le_central_start_scan(void); 475 le_command_status_t le_central_stop_scan(void); 476 le_command_status_t le_central_connect(bd_addr_t * addr, bd_addr_type_t addr_type); 477 le_command_status_t le_central_connect_cancel(void); 478 le_command_status_t gap_disconnect(hci_con_handle_t handle); 479 void le_central_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window); 480 481 // *************** le client end 482 483 // create and send hci command packets based on a template and a list of parameters 484 uint16_t hci_create_cmd(uint8_t *hci_cmd_buffer, hci_cmd_t *cmd, ...); 485 uint16_t hci_create_cmd_internal(uint8_t *hci_cmd_buffer, const hci_cmd_t *cmd, va_list argptr); 486 487 void hci_connectable_control(uint8_t enable); 488 void hci_close(void); 489 490 /** 491 * run the hci control loop once 492 */ 493 void hci_run(void); 494 495 // send complete CMD packet 496 int hci_send_cmd_packet(uint8_t *packet, int size); 497 498 // send ACL packet prepared in hci packet buffer 499 int hci_send_acl_packet_buffer(int size); 500 501 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 502 int hci_can_send_command_packet_now(void); 503 int hci_can_send_acl_packet_now(hci_con_handle_t con_handle); 504 int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); 505 506 // non-blocking UART driver needs 507 // @deprecated use hci_can_send_X_now instead 508 int hci_can_send_packet_now(uint8_t packet_type); 509 510 // same as hci_can_send_packet_now, but also checks if packet buffer is free for use 511 // @deprecated use hci_can_send_X_now instead 512 int hci_can_send_packet_now_using_packet_buffer(uint8_t packet_type); 513 514 // reserves outgoing packet buffer. @returns 1 if successful 515 int hci_reserve_packet_buffer(void); 516 void hci_release_packet_buffer(void); 517 518 // used for internal checks in l2cap[-le].c 519 int hci_is_packet_buffer_reserved(void); 520 521 // get point to packet buffer 522 uint8_t* hci_get_outgoing_packet_buffer(void); 523 524 bd_addr_t * hci_local_bd_addr(void); 525 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); 526 hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t *addr, bd_addr_type_t addr_type); 527 int hci_is_le_connection(hci_connection_t * connection); 528 uint8_t hci_number_outgoing_packets(hci_con_handle_t handle); 529 uint8_t hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); 530 int hci_authentication_active_for_handle(hci_con_handle_t handle); 531 uint16_t hci_max_acl_data_packet_length(void); 532 uint16_t hci_max_acl_le_data_packet_length(void); 533 uint16_t hci_usable_acl_packet_types(void); 534 int hci_non_flushable_packet_boundary_flag_supported(void); 535 536 void hci_disconnect_all(void); 537 538 void hci_emit_state(void); 539 void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status); 540 void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 541 void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason); 542 void hci_emit_nr_connections_changed(void); 543 void hci_emit_hci_open_failed(void); 544 void hci_emit_btstack_version(void); 545 void hci_emit_system_bluetooth_enabled(uint8_t enabled); 546 void hci_emit_remote_name_cached(bd_addr_t *addr, device_name_t *name); 547 void hci_emit_discoverable_enabled(uint8_t enabled); 548 void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 549 void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 550 551 // query if remote side supports SSP 552 // query if the local side supports SSP 553 int hci_local_ssp_activated(void); 554 555 // query if the remote side supports SSP 556 int hci_remote_ssp_supported(hci_con_handle_t con_handle); 557 558 // query if both sides support SSP 559 int hci_ssp_supported_on_both_sides(hci_con_handle_t handle); 560 561 // disable automatic l2cap disconnect for testing 562 void hci_disable_l2cap_timeout_check(void); 563 564 // disconnect because of security block 565 void hci_disconnect_security_block(hci_con_handle_t con_handle); 566 567 /** Embedded API **/ 568 569 // Set up HCI. Needs to be called before any other function 570 void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t const* remote_device_db); 571 572 // Set class of device that will be set during Bluetooth init 573 void hci_set_class_of_device(uint32_t class_of_device); 574 575 // Registers a packet handler. Used if L2CAP is not used (rarely). 576 void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)); 577 578 // Requests the change of BTstack power mode. 579 int hci_power_control(HCI_POWER_MODE mode); 580 581 // Allows to control if device is discoverable. OFF by default. 582 void hci_discoverable_control(uint8_t enable); 583 584 // Creates and sends HCI command packets based on a template and 585 // a list of parameters. Will return error if outgoing data buffer 586 // is occupied. 587 int hci_send_cmd(const hci_cmd_t *cmd, ...); 588 589 // Deletes link key for remote device with baseband address. 590 void hci_drop_link_key_for_bd_addr(bd_addr_t *addr); 591 592 // Configure Secure Simple Pairing 593 594 // enable will enable SSP during init 595 void hci_ssp_set_enable(int enable); 596 597 // if set, BTstack will respond to io capability request using authentication requirement 598 void hci_ssp_set_io_capability(int ssp_io_capability); 599 void hci_ssp_set_authentication_requirement(int authentication_requirement); 600 601 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 602 void hci_ssp_set_auto_accept(int auto_accept); 603 604 // get addr type and address used in advertisement packets 605 void hci_le_advertisement_address(uint8_t * addr_type, bd_addr_t * addr); 606 607 608 #if defined __cplusplus 609 } 610 #endif 611 612 #endif // __HCI_H 613