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=== ThinkPad Bluetooth with Enhanced Data Rate (BDC-2) ===
This is a USB Bluetooth Adapter that is installed in a BDC slot in the screen assembly.

=== Features ===
* Chipset: Broadcom
* Model: BCM2045B
* USB VID/PID: 0A5C:2110
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=== IBM Partnumbers ===
IBM FRU PN: 39T0497

=== Linux Driver ===

The Bluetooth adapter uses the '''hci_usb''' driver {{kernelconf|CONFIG_BT_HCIUSB||||||}}.

One can enable Bluetooth by pressing {{key|Fn}}{{key|F5}}.  If this doesn't work, you can load the [[thinkpad-acpi]] kernel module and run the following command with root privileges:

{{cmdroot|echo "enable" > /proc/acpi/ibm/bluetooth}}

When Bluetooth is enabled, the Bluetooth-logo LED will light up and executing {{cmdroot|lsusb}} will show an entry mentioning "Broadcom".

On recent ThinkPads the Wireless killswitch disables both WiFi and Bluetooth (verified on a ThinkPad Z60m, Z61t, T60, T61 and X61).

=== Set Fn + F5 or Fn + F6 as hotkey to enable/disable Bluetooth ===
If the {{key|Fn}}{{key|F5}} combo doesn't work for you out-of-box, you can easily use Linux ACPI subsystem to enable and disable Bluetooh. You only need to create two small files (shown below). Note that you need to have <code>acpid</code> and <code>thinkpad_acpi</code> installed and properly working. The following scripts were tested on openSUSE 10.3.

Newer ThinkPad T Series Models cycle through four options:
# WLAN on + bluetooth on
# WLAN off + bluetooth off
# WLAN off + bluetooth on
# WLAN on + bluetooth off
If you don't like this and want to control only bluetooth without affecting WLAN you can simply add {{key|Fn}}{{key|F6}} as the bluetooth toggle. To do that use the second ACPI event handler scipt below instead of the first one.
==== ACPI action script ====
<pre># cat /etc/acpi/actions/bluetooth
#!/bin/bash
# Bluetooth enable/disable script

/etc/init.d/bluetooth status

if [ "$?" -ne 0 ]; then
        /etc/init.d/bluetooth start > /dev/null
        echo enabled > /proc/acpi/ibm/bluetooth
        echo "Bluetooth enabled"
else
        /etc/init.d/bluetooth stop > /dev/null
        echo disabled > /proc/acpi/ibm/bluetooth
        echo "Bluetooth disabled"
fi</pre>
This script, when executed, detects the current state of Bluetooth subsystem and changes it to the opposite state.

==== ACPI event handler ====
<pre># cat /etc/acpi/events/bluetooth
event=ibm/hotkey HKEY 00000080 00001005
action=/etc/acpi/actions/bluetooth</pre>
<code>acpid</code>, once detects Fn + F5 keypress, runs the given script which disables or enables Bluetooth (and changes state of indication LED).

To use {{key|Fn}}{{key|F6}} for bluetooth toggling only and leave the function of FN+F5 on newer ThinkPads intact use the following script instead of the one above:
<pre># cat /etc/acpi/events/bluetooth
event=ibm/hotkey HKEY 00000080 00001006
action=/etc/acpi/actions/bluetooth</pre>

=== See Also ===
* [[How_to_setup_Bluetooth|How to Setup Bluetooth]]

=== ThinkPads Using This Device ===
* {{Z60m}}, {{Z60t}}, {{Z61t}}
* {{R60}}, {{R61}}
* {{T60}}, {{T60p}}, {{T61}}, {{T61p}}
* {{T400}}
* {{X200}}

=== External Sources ===
*[http://www-307.ibm.com/pc/support/site.wss/document.do?lndocid=MIGR-51427 IBM's page about configuring Bluetooth under Linux]
*[http://www.broadcom.com/products/Bluetooth/Bluetooth-RF-Silicon-and-Software-Solutions/BCM2045 Broadcom BCM2045 Product]
*[http://blogs.ebay.com.hk/lingqi-tech/archive/2007/12 Compare CDC slot types and CDC Bluetooth Cards for various ThinkPad Models] (link is dead as of 18.01.2009)


[[Category:Components]]