/* * Copyright (C) 2014 BlueKitchen GmbH * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holders nor the names of * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * 4. Any redistribution, use, or modification is done solely for * personal benefit and not for any commercial purpose or for * monetary gain. * * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * Please inquire about commercial licensing options at * contact@bluekitchen-gmbh.com * */ /* * hci.h * * Created by Matthias Ringwald on 4/29/09. * */ #ifndef __HCI_H #define __HCI_H #include "btstack-config.h" #include "bt_control.h" #include "classic/remote_device_db.h" #include "hci_cmds.h" #include "hci_transport.h" #include "bk_linked_list.h" #include "utils.h" #include #include #include #if defined __cplusplus extern "C" { #endif // packet buffer sizes // HCI_ACL_PAYLOAD_SIZE is configurable and defined in config.h #define HCI_EVENT_BUFFER_SIZE (HCI_EVENT_HEADER_SIZE + HCI_EVENT_PAYLOAD_SIZE) #define HCI_CMD_BUFFER_SIZE (HCI_CMD_HEADER_SIZE + HCI_CMD_PAYLOAD_SIZE) #define HCI_ACL_BUFFER_SIZE (HCI_ACL_HEADER_SIZE + HCI_ACL_PAYLOAD_SIZE) // size of hci buffers, big enough for command, event, or acl packet without H4 packet type // @note cmd buffer is bigger than event buffer #ifdef HCI_PACKET_BUFFER_SIZE #if HCI_PACKET_BUFFER_SIZE < HCI_ACL_BUFFER_SIZE #error HCI_PACKET_BUFFER_SIZE must be equal or larger than HCI_ACL_BUFFER_SIZE #endif #if HCI_PACKET_BUFFER_SIZE < HCI_CMD_BUFFER_SIZE #error HCI_PACKET_BUFFER_SIZE must be equal or larger than HCI_CMD_BUFFER_SIZE #endif #else #if HCI_ACL_BUFFER_SIZE > HCI_CMD_BUFFER_SIZE #define HCI_PACKET_BUFFER_SIZE HCI_ACL_BUFFER_SIZE #else #define HCI_PACKET_BUFFER_SIZE HCI_CMD_BUFFER_SIZE #endif #endif // additional pre-buffer space for packets to Bluetooth module, for now, used for HCI Transport H4 DMA #define HCI_OUTGOING_PRE_BUFFER_SIZE 1 // BNEP may uncompress the IP Header by 16 bytes #ifdef HAVE_BNEP #define HCI_INCOMING_PRE_BUFFER_SIZE (16 - HCI_ACL_HEADER_SIZE - 4) #endif #ifndef HCI_INCOMING_PRE_BUFFER_SIZE #define HCI_INCOMING_PRE_BUFFER_SIZE 0 #endif // #define IS_COMMAND(packet, command) (READ_BT_16(packet,0) == command.opcode) /** * LE connection parameter update state */ typedef enum { CON_PARAMETER_UPDATE_NONE, CON_PARAMETER_UPDATE_SEND_REQUEST, CON_PARAMETER_UPDATE_SEND_RESPONSE, CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS, CON_PARAMETER_UPDATE_DENY } le_con_parameter_update_state_t; typedef struct le_connection_parameter_range{ uint16_t le_conn_interval_min; uint16_t le_conn_interval_max; uint16_t le_conn_latency_min; uint16_t le_conn_latency_max; uint16_t le_supervision_timeout_min; uint16_t le_supervision_timeout_max; } le_connection_parameter_range_t; // Authentication flags typedef enum { AUTH_FLAGS_NONE = 0x0000, RECV_LINK_KEY_REQUEST = 0x0001, HANDLE_LINK_KEY_REQUEST = 0x0002, SENT_LINK_KEY_REPLY = 0x0004, SENT_LINK_KEY_NEGATIVE_REQUEST = 0x0008, RECV_LINK_KEY_NOTIFICATION = 0x0010, DENY_PIN_CODE_REQUEST = 0x0040, RECV_IO_CAPABILITIES_REQUEST = 0x0080, SEND_IO_CAPABILITIES_REPLY = 0x0100, SEND_USER_CONFIRM_REPLY = 0x0200, SEND_USER_PASSKEY_REPLY = 0x0400, // pairing status LEGACY_PAIRING_ACTIVE = 0x2000, SSP_PAIRING_ACTIVE = 0x4000, // connection status CONNECTION_ENCRYPTED = 0x8000, } hci_authentication_flags_t; /** * Connection State */ typedef enum { SEND_CREATE_CONNECTION = 0, SENT_CREATE_CONNECTION, SEND_CANCEL_CONNECTION, SENT_CANCEL_CONNECTION, RECEIVED_CONNECTION_REQUEST, ACCEPTED_CONNECTION_REQUEST, REJECTED_CONNECTION_REQUEST, OPEN, SEND_DISCONNECT, SENT_DISCONNECT, RECEIVED_DISCONNECTION_COMPLETE } CONNECTION_STATE; // bonding flags enum { BONDING_REQUEST_REMOTE_FEATURES = 0x01, BONDING_RECEIVED_REMOTE_FEATURES = 0x02, BONDING_REMOTE_SUPPORTS_SSP = 0x04, BONDING_DISCONNECT_SECURITY_BLOCK = 0x08, BONDING_DISCONNECT_DEDICATED_DONE = 0x10, BONDING_SEND_AUTHENTICATE_REQUEST = 0x20, BONDING_SEND_ENCRYPTION_REQUEST = 0x40, BONDING_DEDICATED = 0x80, BONDING_EMIT_COMPLETE_ON_DISCONNECT = 0x100 }; typedef enum { BLUETOOTH_OFF = 1, BLUETOOTH_ON, BLUETOOTH_ACTIVE } BLUETOOTH_STATE; // le central scanning state typedef enum { LE_SCAN_IDLE, LE_START_SCAN, LE_SCANNING, LE_STOP_SCAN, } le_scanning_state_t; typedef enum { LE_CONNECTING_IDLE, LE_CONNECTING_DIRECT, LE_CONNECTING_WHITELIST, } le_connecting_state_t; // // SM internal types and globals // typedef enum { // general states // state = 0 SM_GENERAL_IDLE, SM_GENERAL_SEND_PAIRING_FAILED, SM_GENERAL_TIMEOUT, // no other security messages are exchanged // Phase 1: Pairing Feature Exchange SM_PH1_W4_USER_RESPONSE, // Phase 2: Authenticating and Encrypting // get random number for use as TK Passkey if we show it SM_PH2_GET_RANDOM_TK, SM_PH2_W4_RANDOM_TK, // get local random number for confirm c1 SM_PH2_C1_GET_RANDOM_A, SM_PH2_C1_W4_RANDOM_A, SM_PH2_C1_GET_RANDOM_B, SM_PH2_C1_W4_RANDOM_B, // calculate confirm value for local side // state = 10 SM_PH2_C1_GET_ENC_A, SM_PH2_C1_W4_ENC_A, SM_PH2_C1_GET_ENC_B, SM_PH2_C1_W4_ENC_B, // calculate confirm value for remote side SM_PH2_C1_GET_ENC_C, SM_PH2_C1_W4_ENC_C, SM_PH2_C1_GET_ENC_D, SM_PH2_C1_W4_ENC_D, SM_PH2_C1_SEND_PAIRING_CONFIRM, SM_PH2_SEND_PAIRING_RANDOM, // calc STK // state = 20 SM_PH2_CALC_STK, SM_PH2_W4_STK, SM_PH2_W4_CONNECTION_ENCRYPTED, // Phase 3: Transport Specific Key Distribution // calculate DHK, Y, EDIV, and LTK SM_PH3_GET_RANDOM, SM_PH3_W4_RANDOM, SM_PH3_GET_DIV, SM_PH3_W4_DIV, SM_PH3_Y_GET_ENC, SM_PH3_Y_W4_ENC, SM_PH3_LTK_GET_ENC, // state = 30 SM_PH3_LTK_W4_ENC, SM_PH3_CSRK_GET_ENC, SM_PH3_CSRK_W4_ENC, // exchange keys SM_PH3_DISTRIBUTE_KEYS, SM_PH3_RECEIVE_KEYS, // RESPONDER ROLE // state = 35 SM_RESPONDER_IDLE, SM_RESPONDER_SEND_SECURITY_REQUEST, SM_RESPONDER_PH0_RECEIVED_LTK, SM_RESPONDER_PH0_SEND_LTK_REQUESTED_NEGATIVE_REPLY, SM_RESPONDER_PH1_W4_PAIRING_REQUEST, SM_RESPONDER_PH1_PAIRING_REQUEST_RECEIVED, SM_RESPONDER_PH1_SEND_PAIRING_RESPONSE, SM_RESPONDER_PH1_W4_PAIRING_CONFIRM, SM_RESPONDER_PH2_W4_PAIRING_RANDOM, SM_RESPONDER_PH2_W4_LTK_REQUEST, SM_RESPONDER_PH2_SEND_LTK_REPLY, // Phase 4: re-establish previously distributed LTK // state == 46 SM_RESPONDER_PH4_Y_GET_ENC, SM_RESPONDER_PH4_Y_W4_ENC, SM_RESPONDER_PH4_LTK_GET_ENC, SM_RESPONDER_PH4_LTK_W4_ENC, SM_RESPONDER_PH4_SEND_LTK, // INITITIATOR ROLE // state = 51 SM_INITIATOR_CONNECTED, SM_INITIATOR_PH0_HAS_LTK, SM_INITIATOR_PH0_SEND_START_ENCRYPTION, SM_INITIATOR_PH0_W4_CONNECTION_ENCRYPTED, SM_INITIATOR_PH1_W2_SEND_PAIRING_REQUEST, SM_INITIATOR_PH1_SEND_PAIRING_REQUEST, SM_INITIATOR_PH1_W4_PAIRING_RESPONSE, SM_INITIATOR_PH2_W4_PAIRING_CONFIRM, SM_INITIATOR_PH2_W4_PAIRING_RANDOM, SM_INITIATOR_PH3_SEND_START_ENCRYPTION, } security_manager_state_t; typedef enum { IRK_LOOKUP_IDLE, IRK_LOOKUP_W4_READY, IRK_LOOKUP_STARTED, IRK_LOOKUP_SUCCEEDED, IRK_LOOKUP_FAILED } irk_lookup_state_t; // Authorization state typedef enum { AUTHORIZATION_UNKNOWN, AUTHORIZATION_PENDING, AUTHORIZATION_DECLINED, AUTHORIZATION_GRANTED } authorization_state_t; typedef struct sm_pairing_packet { uint8_t code; uint8_t io_capability; uint8_t oob_data_flag; uint8_t auth_req; uint8_t max_encryption_key_size; uint8_t initiator_key_distribution; uint8_t responder_key_distribution; } sm_pairing_packet_t; // connection info available as long as connection exists typedef struct sm_connection { uint16_t sm_handle; uint8_t sm_role; // 0 - IamMaster, 1 = IamSlave uint8_t sm_security_request_received; uint8_t sm_bonding_requested; uint8_t sm_peer_addr_type; bd_addr_t sm_peer_address; security_manager_state_t sm_engine_state; irk_lookup_state_t sm_irk_lookup_state; uint8_t sm_connection_encrypted; uint8_t sm_connection_authenticated; // [0..1] uint8_t sm_actual_encryption_key_size; sm_pairing_packet_t sm_m_preq; // only used during c1 authorization_state_t sm_connection_authorization_state; uint16_t sm_local_ediv; uint8_t sm_local_rand[8]; int sm_le_db_index; } sm_connection_t; typedef struct { // linked list - assert: first field linked_item_t item; // remote side bd_addr_t address; // module handle hci_con_handle_t con_handle; // le public, le random, classic bd_addr_type_t address_type; // role: 0 - master, 1 - slave uint8_t role; // connection state CONNECTION_STATE state; // bonding uint16_t bonding_flags; uint8_t bonding_status; // requested security level gap_security_level_t requested_security_level; // link_key_type_t link_key_type; // remote supported features uint8_t remote_supported_feature_eSCO; // errands uint32_t authentication_flags; timer_source_t timeout; #ifdef HAVE_TIME // timer struct timeval timestamp; #endif #ifdef HAVE_TICK uint32_t timestamp; // timestamp in system ticks #endif #ifdef HAVE_TIME_MS uint32_t timestamp; // timestamp in ms #endif // ACL packet recombination - PRE_BUFFER + ACL Header + ACL payload uint8_t acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + 4 + HCI_ACL_BUFFER_SIZE]; uint16_t acl_recombination_pos; uint16_t acl_recombination_length; // number packets sent to controller uint8_t num_acl_packets_sent; uint8_t num_sco_packets_sent; // LE Connection parameter update le_con_parameter_update_state_t le_con_parameter_update_state; uint8_t le_con_param_update_identifier; uint16_t le_conn_interval_min; uint16_t le_conn_interval_max; uint16_t le_conn_latency; uint16_t le_supervision_timeout; #ifdef HAVE_BLE // LE Security Manager sm_connection_t sm_connection; #endif } hci_connection_t; /** * HCI Inititizlization State Machine */ typedef enum hci_init_state{ HCI_INIT_SEND_RESET = 0, HCI_INIT_W4_SEND_RESET, HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION, HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION, HCI_INIT_SEND_BAUD_CHANGE, HCI_INIT_W4_SEND_BAUD_CHANGE, HCI_INIT_CUSTOM_INIT, HCI_INIT_W4_CUSTOM_INIT, HCI_INIT_SEND_RESET_CSR_WARM_BOOT, HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT, HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS, HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS, HCI_INIT_SEND_BAUD_CHANGE_BCM, HCI_INIT_W4_SEND_BAUD_CHANGE_BCM, HCI_INIT_SET_BD_ADDR, HCI_INIT_W4_SET_BD_ADDR, HCI_INIT_SEND_RESET_ST_WARM_BOOT, HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT, HCI_INIT_READ_BD_ADDR, HCI_INIT_W4_READ_BD_ADDR, HCI_INIT_READ_BUFFER_SIZE, HCI_INIT_W4_READ_BUFFER_SIZE, HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES, HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES, HCI_INIT_SET_EVENT_MASK, HCI_INIT_W4_SET_EVENT_MASK, HCI_INIT_WRITE_SIMPLE_PAIRING_MODE, HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE, HCI_INIT_WRITE_PAGE_TIMEOUT, HCI_INIT_W4_WRITE_PAGE_TIMEOUT, HCI_INIT_WRITE_CLASS_OF_DEVICE, HCI_INIT_W4_WRITE_CLASS_OF_DEVICE, HCI_INIT_WRITE_LOCAL_NAME, HCI_INIT_W4_WRITE_LOCAL_NAME, HCI_INIT_WRITE_SCAN_ENABLE, HCI_INIT_W4_WRITE_SCAN_ENABLE, HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE, HCI_INIT_LE_READ_BUFFER_SIZE, HCI_INIT_W4_LE_READ_BUFFER_SIZE, HCI_INIT_WRITE_LE_HOST_SUPPORTED, HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED, HCI_INIT_READ_WHITE_LIST_SIZE, HCI_INIT_W4_READ_WHITE_LIST_SIZE, HCI_INIT_LE_SET_SCAN_PARAMETERS, HCI_INIT_W4_LE_SET_SCAN_PARAMETERS, HCI_INIT_DONE, HCI_FALLING_ASLEEP_DISCONNECT, HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE, HCI_FALLING_ASLEEP_COMPLETE, HCI_INIT_AFTER_SLEEP } hci_substate_t; enum { LE_ADVERTISEMENT_TASKS_DISABLE = 1 << 0, LE_ADVERTISEMENT_TASKS_SET_DATA = 1 << 1, LE_ADVERTISEMENT_TASKS_SET_PARAMS = 1 << 2, LE_ADVERTISEMENT_TASKS_ENABLE = 1 << 3, }; enum { LE_WHITELIST_ON_CONTROLLER = 1 << 0, LE_WHITELIST_ADD_TO_CONTROLLER = 1 << 1, LE_WHITELIST_REMOVE_FROM_CONTROLLER = 1 << 2, }; typedef struct { linked_item_t item; bd_addr_t address; bd_addr_type_t address_type; uint8_t state; } whitelist_entry_t; /** * main data structure */ typedef struct { // transport component with configuration hci_transport_t * hci_transport; void * config; // basic configuration const char * local_name; uint32_t class_of_device; bd_addr_t local_bd_addr; uint8_t ssp_enable; uint8_t ssp_io_capability; uint8_t ssp_authentication_requirement; uint8_t ssp_auto_accept; // hardware power controller bt_control_t * control; // list of existing baseband connections bk_linked_list_t connections; // single buffer for HCI packet assembly + additional prebuffer for H4 drivers uint8_t hci_packet_buffer_prefix[HCI_OUTGOING_PRE_BUFFER_SIZE]; uint8_t hci_packet_buffer[HCI_PACKET_BUFFER_SIZE]; // opcode (16), len(8) uint8_t hci_packet_buffer_reserved; uint16_t acl_fragmentation_pos; uint16_t acl_fragmentation_total_size; /* host to controller flow control */ uint8_t num_cmd_packets; uint8_t acl_packets_total_num; uint16_t acl_data_packet_length; uint8_t sco_packets_total_num; uint8_t sco_data_packet_length; uint8_t synchronous_flow_control_enabled; uint8_t le_acl_packets_total_num; uint16_t le_data_packets_length; /* local supported features */ uint8_t local_supported_features[8]; /* local supported commands summary - complete info is 64 bytes */ /* 0 - read buffer size */ /* 1 - write le host supported */ uint8_t local_supported_commands[1]; /* bluetooth device information from hci read local version information */ // uint16_t hci_version; // uint16_t hci_revision; // uint16_t lmp_version; uint16_t manufacturer; // uint16_t lmp_subversion; // usable packet types given acl_data_packet_length and HCI_ACL_BUFFER_SIZE uint16_t packet_types; /* callback to L2CAP layer */ void (*packet_handler)(uint8_t packet_type, uint8_t *packet, uint16_t size); /* callback for SCO data */ void (*sco_packet_handler)(uint8_t packet_type, uint8_t *packet, uint16_t size); /* remote device db */ remote_device_db_t const*remote_device_db; /* hci state machine */ HCI_STATE state; hci_substate_t substate; timer_source_t timeout; uint8_t cmds_ready; uint16_t last_cmd_opcode; uint8_t discoverable; uint8_t connectable; uint8_t bondable; /* buffer for scan enable cmd - 0xff no change */ uint8_t new_scan_enable_value; uint16_t sco_voice_setting; uint8_t loopback_mode; // buffer for single connection decline uint8_t decline_reason; bd_addr_t decline_addr; uint8_t adv_addr_type; bd_addr_t adv_address; le_scanning_state_t le_scanning_state; le_connecting_state_t le_connecting_state; // buffer for le scan type command - 0xff not set uint8_t le_scan_type; uint16_t le_scan_interval; uint16_t le_scan_window; le_connection_parameter_range_t le_connection_parameter_range; uint8_t * le_advertisements_data; uint8_t le_advertisements_data_len; uint8_t le_advertisements_active; uint8_t le_advertisements_enabled; uint8_t le_advertisements_todo; uint16_t le_advertisements_interval_min; uint16_t le_advertisements_interval_max; uint8_t le_advertisements_type; uint8_t le_advertisements_own_address_type; uint8_t le_advertisements_direct_address_type; uint8_t le_advertisements_channel_map; uint8_t le_advertisements_filter_policy; bd_addr_t le_advertisements_direct_address; // LE Whitelist Management uint16_t le_whitelist_capacity; bk_linked_list_t le_whitelist; // custom BD ADDR bd_addr_t custom_bd_addr; uint8_t custom_bd_addr_set; // hardware error handler void (*hardware_error_callback)(void); } hci_stack_t; /** * set connection iterator */ void hci_connections_get_iterator(linked_list_iterator_t *it); // create and send hci command packets based on a template and a list of parameters uint16_t hci_create_cmd(uint8_t *hci_cmd_buffer, hci_cmd_t *cmd, ...); uint16_t hci_create_cmd_internal(uint8_t *hci_cmd_buffer, const hci_cmd_t *cmd, va_list argptr); /** * run the hci control loop once */ void hci_run(void); // send ACL packet prepared in hci packet buffer int hci_send_acl_packet_buffer(int size); // send SCO packet prepared in hci packet buffer int hci_send_sco_packet_buffer(int size); int hci_can_send_acl_packet_now(hci_con_handle_t con_handle); int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle); int hci_can_send_sco_packet_now(hci_con_handle_t con_handle); int hci_can_send_prepared_sco_packet_now(hci_con_handle_t con_handle); // reserves outgoing packet buffer. @returns 1 if successful int hci_reserve_packet_buffer(void); void hci_release_packet_buffer(void); // used for internal checks in l2cap[-le].c int hci_is_packet_buffer_reserved(void); // get point to packet buffer uint8_t* hci_get_outgoing_packet_buffer(void); hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle); hci_connection_t * hci_connection_for_bd_addr_and_type(bd_addr_t addr, bd_addr_type_t addr_type); int hci_is_le_connection(hci_connection_t * connection); uint8_t hci_number_outgoing_packets(hci_con_handle_t handle); uint8_t hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle); int hci_authentication_active_for_handle(hci_con_handle_t handle); uint16_t hci_max_acl_data_packet_length(void); uint16_t hci_max_acl_le_data_packet_length(void); uint16_t hci_usable_acl_packet_types(void); int hci_non_flushable_packet_boundary_flag_supported(void); void hci_disconnect_all(void); void hci_emit_state(void); void hci_emit_connection_complete(hci_connection_t *conn, uint8_t status); void hci_emit_l2cap_check_timeout(hci_connection_t *conn); void hci_emit_disconnection_complete(uint16_t handle, uint8_t reason); void hci_emit_nr_connections_changed(void); void hci_emit_hci_open_failed(void); void hci_emit_btstack_version(void); void hci_emit_system_bluetooth_enabled(uint8_t enabled); void hci_emit_remote_name_cached(bd_addr_t addr, device_name_t *name); void hci_emit_discoverable_enabled(uint8_t enabled); void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); // query if the local side supports SSP int hci_local_ssp_activated(void); // query if the remote side supports SSP int hci_remote_ssp_supported(hci_con_handle_t con_handle); // query if both sides support SSP int hci_ssp_supported_on_both_sides(hci_con_handle_t handle); // disable automatic L2CAP disconnect for testing void hci_disable_l2cap_timeout_check(void); // disconnect because of security block void hci_disconnect_security_block(hci_con_handle_t con_handle); // send complete CMD packet int hci_send_cmd_packet(uint8_t *packet, int size); // query if remote side supports eSCO int hci_remote_eSCO_supported(hci_con_handle_t con_handle); /* API_START */ void gap_le_get_connection_parameter_range(le_connection_parameter_range_t range); void gap_le_set_connection_parameter_range(le_connection_parameter_range_t range); /* LE Client Start */ uint8_t le_central_start_scan(void); uint8_t le_central_stop_scan(void); uint8_t le_central_connect(bd_addr_t addr, bd_addr_type_t addr_type); uint8_t le_central_connect_cancel(void); uint8_t gap_disconnect(hci_con_handle_t handle); void le_central_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window); /* LE Client End */ void hci_connectable_control(uint8_t enable); void hci_close(void); /** * @note New functions replacing: hci_can_send_packet_now[_using_packet_buffer] */ int hci_can_send_command_packet_now(void); /** * @brief Gets local address. */ void hci_local_bd_addr(bd_addr_t address_buffer); /** * @brief Set up HCI. Needs to be called before any other function. */ void hci_init(hci_transport_t *transport, void *config, bt_control_t *control, remote_device_db_t const* remote_device_db); /** * @brief Set class of device that will be set during Bluetooth init. */ void hci_set_class_of_device(uint32_t class_of_device); /** * @brief Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h */ void hci_set_bd_addr(bd_addr_t addr); /** * @brief Registers a packet handler. Used if L2CAP is not used (rarely). */ void hci_register_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)); /** * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. */ void hci_register_sco_packet_handler(void (*handler)(uint8_t packet_type, uint8_t *packet, uint16_t size)); /** * @brief Requests the change of BTstack power mode. */ int hci_power_control(HCI_POWER_MODE mode); /** * @brief Allows to control if device is discoverable. OFF by default. */ void hci_discoverable_control(uint8_t enable); /** * @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. */ int hci_send_cmd(const hci_cmd_t *cmd, ...); /** * @brief Deletes link key for remote device with baseband address. */ void hci_drop_link_key_for_bd_addr(bd_addr_t addr); /* Configure Secure Simple Pairing */ /** * @brief Enable will enable SSP during init. */ void hci_ssp_set_enable(int enable); /** * @brief If set, BTstack will respond to io capability request using authentication requirement. */ void hci_ssp_set_io_capability(int ssp_io_capability); void hci_ssp_set_authentication_requirement(int authentication_requirement); /** * @brief If set, BTstack will confirm a numeric comparison and enter '000000' if requested. */ void hci_ssp_set_auto_accept(int auto_accept); /** * @brief Get addr type and address used in advertisement packets. */ void hci_le_advertisement_address(uint8_t * addr_type, bd_addr_t addr); /** * @brief Set callback for Bluetooth Hardware Error */ void hci_set_hardware_error_callback(void (*fn)(void)); /** * @brief Configure Voice Setting for use with SCO data in HSP/HFP */ void hci_set_sco_voice_setting(uint16_t voice_setting); /** * @brief Get SCO Voice Setting * @return current voice setting */ uint16_t hci_get_sco_voice_setting(void); /** @brief Get SCO packet length for current SCO Voice setting * @note Using SCO packets of the exact length is required for USB transfer * @return Length of SCO packets in bytes (not audio frames) incl. 3 byte header */ int hci_get_sco_packet_length(void); /* API_END */ /** * @brief Set Advertisement Parameters * @param adv_int_min * @param adv_int_max * @param adv_type * @param own_address_type * @param direct_address_type * @param direct_address * @param channel_map * @param filter_policy * * @note internal use. use gap_advertisements_set_params from gap_le.h instead. */ void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, uint8_t own_address_type, uint8_t direct_address_typ, bd_addr_t direct_address, uint8_t channel_map, uint8_t filter_policy); #if defined __cplusplus } #endif #endif // __HCI_H