Module hci

veridian_kernel::drivers::bluetooth

Module hci

Expand description

Bluetooth HCI (Host Controller Interface) Driver

Implements the HCI transport layer, command/event protocol, device discovery, connection management, L2CAP basics, and SDP service discovery stubs.

Reference: Bluetooth Core Specification v5.4, Volume 4 (HCI)

Structs§

AclHeader: ACL Data packet header
BluetoothController: Main Bluetooth HCI controller
BluetoothStats: Statistics for the Bluetooth controller
DiscoveredDevice: A discovered Bluetooth device
HciCommand: HCI Command packet header + parameters
HciConnection: An active HCI connection
HciEvent: HCI Event packet
HciUsbTransport: USB HCI transport endpoint configuration
L2capHeader: L2CAP header (4 bytes: length + channel ID)
L2capSignalHeader: L2CAP signaling packet header (code + identifier + length)
SdpServiceRecord: SDP service record (stub)

Enums§

AclBoundaryFlag: ACL packet boundary flags
AclBroadcastFlag: ACL packet broadcast flag
ConnectionState: Connection state
ControllerState: Bluetooth controller state
HciEventCode: HCI Event codes
HciPacketType: HCI packet type indicators (UART H4 transport)
L2capSignalCode: L2CAP signaling command codes
Ogf: OpCode Group Field values
ScanEnable: Scan enable modes for HCI_Write_Scan_Enable
SdpPduId: SDP PDU IDs

Constants§

ACL_MAX_DATA_LEN: Maximum ACL data payload
BD_ADDR_ZERO: Zero / unset BD_ADDR
GIAC_LAP: General Inquiry Access Code LAP (GIAC)
HCI_CREATE_CONNECTION: HCI_Create_Connection (OGF=0x01, OCF=0x0005)
HCI_DISCONNECT: HCI_Disconnect (OGF=0x01, OCF=0x0006)
HCI_INQUIRY: HCI_Inquiry (OGF=0x01, OCF=0x0001)
HCI_MAX_COMMAND_PARAMS: Maximum HCI command parameter length
HCI_MAX_EVENT_PARAMS: Maximum HCI event parameter length
HCI_READ_BD_ADDR: HCI_Read_BD_ADDR (OGF=0x04, OCF=0x0009)
HCI_READ_LOCAL_NAME: HCI_Read_Local_Name (OGF=0x03, OCF=0x0014)
HCI_RESET: HCI_Reset (OGF=0x03, OCF=0x0003)
HCI_WRITE_SCAN_ENABLE: HCI_Write_Scan_Enable (OGF=0x03, OCF=0x001A)
L2CAP_CID_ATT: L2CAP ATT (Attribute Protocol) fixed channel CID
L2CAP_CID_CONNECTIONLESS: L2CAP connectionless channel CID
L2CAP_CID_LE_SIGNALING: L2CAP LE Signaling channel CID
L2CAP_CID_SIGNALING: L2CAP signaling channel CID
L2CAP_CID_SMP: L2CAP SMP (Security Manager Protocol) fixed channel CID
LIAC_LAP: Limited Inquiry Access Code LAP (LIAC)
MAX_CONNECTIONS: Maximum number of simultaneous connections
MAX_DISCOVERED_DEVICES: Maximum number of discovered devices
MAX_SDP_RECORDS: Maximum number of SDP service records
UUID_A2DP_SINK
UUID_A2DP_SOURCE
UUID_HFP
UUID_HID
UUID_L2CAP
UUID_OBEX_PUSH
UUID_RFCOMM
UUID_SDP: Common Bluetooth UUIDs (16-bit short form)
UUID_SERIAL_PORT

Functions§

init: Initialize the HCI subsystem (called from bluetooth::init)
make_opcode: Build an HCI opcode from OGF and OCF fields Format: bits [15:10] = OGF, bits [9:0] = OCF
opcode_ocf: Extract OCF from an HCI opcode
opcode_ogf: Extract OGF from an HCI opcode

Type Aliases§

BdAddr: Bluetooth device address (6 bytes, little-endian)