NG_BT3C(4)

NAME
ng_bt3c - Netgraph node type that is also a 3Com Bluetooth PC card driver

SYNOPSIS
#include <sys/types.h>
#include <netgraph/bluetooth/include/ng_bt3c.h>

DESCRIPTION
The btccc node type is both a persistent Netgraph node type and a driver for the 3Com Bluetooth PC card (3CRWB6096-HP). It implements a Bluetooth HCI UART transport layer as per chapter H4 of the Bluetooth Specification Book v1.1. A new node is created when the card is plugged.

In order to use the card one MUST download the firmware first. Due to copyright issues the firmware cannot be provided with this driver. The firmware can be obtained from the Windows driver package that can be downloaded from the 3Com web site at no charge. The firmware name is BT3CPCC.BIN. To load the firmware into the card, use bt3cfw(8). I am using the original firmware that came with the card on CD-ROM.

    MD5 (BT3CPCC.BIN) = 36170fda56ea9fdbf1702c966f8a97f1

The node has a single hook called hook. Incoming bytes received on the device are re-assembled into HCI frames (according to the length). Full HCI frames are sent out on the hook. HCI frames received on hook are transmitted out. No modification to the data is performed in either direction.

HARDWARE
The ng_bt3c driver provides support for the 3Com/HP 3CRWB6096-A PCCARD bluetooth adapter.

HOOKS
This node type supports the following hooks:

hook
    single HCI frame contained in single mbuf structure.

CONTROL MESSAGES
This node type supports the generic control messages, plus the following:

NGM_BT3C_NODE_GET_STATE
    Returns the current receiving state for the node.

NGM_BT3C_NODE_GET_DEBUG
    Returns an integer containing the current debug level for the node.

NGM_BT3C_NODE_SET_DEBUG
    This command takes an integer argument and sets the current debug level for the node.

NGM_BT3C_NODE_GET_QLEN
    This command takes a parameter that specifies queue number and returns the current length of the queue for the node.

NGM_BT3C_NODE_SET_QLEN
    This command takes two parameters that specify the queue number and the maximum length of the queue and sets the maximum length of the queue for the node.

NGM_BT3C_NODE_GET_STAT
    Returns various statistic information for the node, such as: number of bytes (frames) sent, number of bytes (frames) received and number of input (output) errors.

NGM_BT3C_NODE_RESET_STAT
    Reset all statistic counters to zero.

NGM_BT3C_NODE_DOWNLOAD_FIRMWARE
    Download card firmware.

SHUTDOWN
This node shuts down when the corresponding card is un-plugged.

SEE ALSO
cardbus(4), netgraph(4), pccbb(4), pcic(4), pccard.conf(5), bt3cfw(8), ngctl(8)

HISTORY
The btccc node type was implemented in FreeBSD 5.0.

AUTHORS
Maksim Yevmenkin <m_evmenkin@yahoo.com>

BUGS
The driver is based on information obtained from Jose Orlando Pereira <jop@di.uminho.pt> and disassembled the W2K driver.