Bluetooth Management API
*************************
Copyright (C) 2008-2009 Marcel Holtmann <marcel@holtmann.org>
Overview
========
This document describes the format of data used for communicating with
the kernel using a so-called Bluetooth Management sockets. These sockets
are available starting with Linux kernel version 3.4
The following kernel versions introduced new commands, new events or
important fixes to the Bluetooth Management API:
Linux kernel v3.4 Version 1.0
Linux kernel v3.5 Version 1.1
Linux kernel v3.7 Version 1.2
Linux kernel v3.9 Version 1.3
Linux kernel v3.13 Version 1.4
Linux kernel v3.15 Version 1.5
Linux kernel v3.16 Version 1.6
Linux kernel v3.17 Version 1.7
Linux kernel v3.19 Version 1.8
Linux kernel v4.1 Version 1.9
Linux kernel v4.2 Version 1.10
Linux kernel v4.5 Version 1.11
Linux kernel v4.6 Version 1.12
Linux kernel v4.8 Version 1.13
Linux kernel v4.9 Version 1.14
Version 1.1 introduces Set Device ID command.
Version 1.2 introduces Passkey Notify event.
Version 1.3 does not introduce any new command or event.
Version 1.4 introduces Set Advertising, Set BR/EDR, Set Static Address
and Set Scan Parameters commands. The existing Set Discoverable command
gained an extra setting for limited discoverable mode. The device name
is now provided in the scan response data for Low Energy.
Version 1.5 introduces Set Secure Connections, Set Debug Keys, Set Privacy
and Load Identity Resolving Keys commands. It also introduces New Identity
Resolving Key and New Signature Resolving Key events.
Version 1.6 introduces Get Connection Information command. It also updates
the Device Found event to combine advertising data and scan response data
into a single event.
Version 1.7 introduces Get Clock Information, Add Device, Remove Device,
Load Connection Parameters, Read Unconfigured Index List, Read Controller
Configuration Information, Set External Configuration and Set Public Address
commands. It also introduces Device Added, Device Removed, New Connection
Parameter, Unconfigured Index Added, Unconfigured Index Removed and New
Configuration Options events. The existing Set Debug Keys command gained
an extra setting for enabling SSP debug mode.
Version 1.8 introduces Start Service Discovery command. It also adds new
Long Term Key types for LE Secure Connection feature.
Version 1.9 introduces Read Local Out Of Band Extended, Data, Read Extended
Controller Index List, Read Advertising Features, Add Advertising and Remove
Advertising commands. It also introduces Extended Index Added, Extended Index
Removed, Local Out Of Band Extended Data Updated, Advertising Added and
Advertising Removed events. The existing Set Advertising command gained an
extra setting for enabling undirected connectable advertising. It provides
support for a new static address setting and allows the usage of Set Fast
Connectable when controller is powered off.
Version 1.10 does not introduce any new command or event. It extends the
advertising feature to support 5 parallel advertising instances.
Version 1.11 introduces Get Advertising Size Information and Start Limited
Discovery commands.
Version 1.12 introduces a new limited privacy mode (value 0x02 passed to
the Set Privacy command).
Version 1.13 introduces a new authentication failure reason code for the
Device Disconnected event.
Version 1.14 introduces Read Extended Controller Information command and
Extended Controller Information Changed event. It also adds Set Appearance
command. The advertising flags Appearance and Local Name for adding scan
response information are now supported.
Example
=======
The Bluetooth management sockets can be created by setting the hci_channel
member of struct sockaddr_hci to HCI_CHANNEL_CONTROL (3) when creating a
raw HCI socket. In C the needed code would look something like the following:
int mgmt_create(void)
{
struct sockaddr_hci addr;
int fd;
fd = socket(PF_BLUETOOTH, SOCK_RAW | SOCK_CLOEXEC | SOCK_NONBLOCK,
BTPROTO_HCI);
if (fd < 0)
return -errno;
memset(&addr, 0, sizeof(addr));
addr.hci_family = AF_BLUETOOTH;
addr.hci_dev = HCI_DEV_NONE;
addr.hci_channel = HCI_CHANNEL_CONTROL;
if (bind(fd, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
int err = -errno;
close(fd);
return err;
}
return fd;
}
The process creating the mgmt socket is required to have the
CAP_NET_ADMIN capability (e.g. root would have this).
Packet Structures
=================
Commands:
0 4 8 12 16 22 24 28 31 35 39 43 47
+-------------------+-------------------+-------------------+
| Command Code | Controller Index | Parameter Length |
+-------------------+-------------------+-------------------+
| |
Events:
0 4 8 12 16 22 24 28 31 35 39 43 47
+-------------------+-------------------+-------------------+
| Event Code | Controller Index | Parameter Length |
+-------------------+-------------------+-------------------+
| |
All fields are in little-endian byte order (least significant byte first).
Controller Index can have a special value <non-controller> to indicate that
command or event is not related to any controller. Possible values:
<controller id> 0x0000 to 0xFFFE
<non-controller> 0xFFFF
Error Codes
===========
The following values have been defined for use with the Command Status
and Command Complete events:
0x00 Success
0x01 Unknown Command
0x02 Not Connected
0x03 Failed
0x04 Connect Failed
0x05 Authentication Failed
0x06 Not Paired
0x07 No Resources
0x08 Timeout
0x09 Already Connected
0x0A Busy
0x0B Rejected
0x0C Not Supported
0x0D Invalid Parameters
0x0E Disconnected
0x0F Not Powered
0x10 Cancelled
0x11 Invalid Index
0x12 RFKilled
0x13 Already Paired
0x14 Permission Denied
As a general rule all commands generate the events as specified below,
however invalid lengths or unknown commands will always generate a
Command Status response (with Unknown Command or Invalid Parameters
status). Sending a command with an invalid Controller Index value will
also always generate a Command Status event with the Invalid Index
status code.
Read Management Version Information Command
===========================================
Command Code: 0x0001
Controller Index: <non-controller>
Command Parameters:
Return Parameters: Version (1 Octets)
Revision (2 Octets)
This command returns the Management version and revision.
Besides, being informational the information can be used to
determine whether certain behavior has changed or bugs fixed
when interacting with the kernel.
This command generates a Command Complete event on success or
a Command Status event on failure.
Read Management Supported Commands Command
==========================================
Command Code: 0x0002
Controller Index: <non-controller>
Command Parameters:
Return Parameters: Num_Of_Commands (2 Octets)
Num_Of_Events (2 Octets)
Command1 (2 Octets)
Command2 (2 Octets)
...
Event1 (2 Octets)
Event2 (2 Octets)
...
This command returns the list of supported Management commands
and events.
The commands Read Management Version Information and Read
management Supported Commands are not included in this list.
Both commands are always supported and mandatory.
The events Command Status and Command Complete are not included
in this list. Both are implicit and mandatory.
This command generates a Command Complete event on success or
a Command Status event on failure.
Read Controller Index List Command
==================================
Command Code: 0x0003
Controller Index: <non-controller>
Command Parameters:
Return Parameters: Num_Controllers (2 Octets)
Controller_Index[i] (2 Octets)
This command returns the list of currently known controllers.
Controllers added or removed after calling this command can be
monitored using the Index Added and Index Removed events.
This command generates a Command Complete event on success or
a Command Status event on failure.
Read Controller Information Command
===================================
Command Code: 0x0004
Controller Index: <controller id>
Command Parameters:
Return Parameters: Address (6 Octets)
Bluetooth_Version (1 Octet)
Manufacturer (2 Octets)
Supported_Settings (4 Octets)
Current_Settings (4 Octets)
Class_Of_Device (3 Octets)
Name (249 Octets)
Short_Name (11 Octets)
This command is used to retrieve the current state and basic
information of a controller. It is typically used right after
getting the response to the Read Controller Index List command
or an Index Added event.
The Address parameter describes the controllers public address
and it can be expected that it is set. However in case of single
mode Low Energy only controllers it can be 00:00:00:00:00:00. To
power on the controller in this case, it is required to configure
a static address using Set Static Address command first.
If the public address is set, then it will be used as identity
address for the controller. If no public address is available,
then the configured static address will be used as identity
address.
In the case of a dual-mode controller with public address that
is configured as Low Energy only device (BR/EDR switched off),
the static address is used when set and public address otherwise.
If no short name is set the Short_Name parameter will be empty
(begin with a nul byte).
Current_Settings and Supported_Settings is a bitmask with
currently the following available bits:
0 Powered
1 Connectable
2 Fast Connectable
3 Discoverable
4 Bondable
5 Link Level Security (Sec. mode 3)
6 Secure Simple Pairing
7 Basic Rate/Enhanced Data Rate
8 High Speed
9 Low Energy
10 Advertising
11 Secure Connections
12 Debug Keys
13 Privacy
14 Controller Configuration
15 Static Address
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Set Powered Command
===================
Command Code: 0x0005
Controller Index: <controller id>
Command Parameters: Powered (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to power on or off a controller. The
allowed Powered command parameter values are 0x00 and 0x01. All
other values will return Invalid Parameters.
If discoverable setting is activated with a timeout, then
switching the controller off will expire this timeout and
disable discoverable.
Settings programmed via Set Advertising and Add/Remove
Advertising while the controller was powered off will be activated
when powering the controller on.
Switching the controller off will permanently cancel and remove
all advertising instances with a timeout set, i.e. time limited
advertising instances are not being remembered across power cycles.
Advertising Removed events will be issued accordingly.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Invalid Parameters
Invalid Index
Set Discoverable Command
========================
Command Code: 0x0006
Controller Index: <controller id>
Command Parameters: Discoverable (1 Octet)
Timeout (2 Octets)
Return Parameters: Current_Settings (4 Octets)
This command is used to set the discoverable property of a
controller. The allowed Discoverable command parameter values
are 0x00, 0x01 and 0x02. All other values will return Invalid
Parameters.
Timeout is the time in seconds and is only meaningful when
Discoverable is set to 0x01 or 0x02. Providing a timeout
with 0x00 return Invalid Parameters. For 0x02, the timeout
value is required.
The value 0x00 disables discoverable, the value 0x01 enables
general discoverable and the value 0x02 enables limited
discoverable.
This command is only available for BR/EDR capable controllers
(e.g. not for single-mode LE ones). It will return Not Supported
otherwise.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
However using a timeout when the controller is not powered will
return Not Powered error.
When switching discoverable on and the connectable setting is
off it will return Rejected error.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Rejected
Not Supported
Invalid Parameters
Not Powered
Invalid Index
Set Connectable Command
=======================
Command Code: 0x0007
Controller Index: <controller id>
Command Parameters: Connectable (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to set the connectable property of a
controller. The allowed Connectable command parameter values are
0x00 and 0x01. All other values will return Invalid Parameters.
This command is available for BR/EDR, LE-only and also dual
mode controllers. For BR/EDR is changes the page scan setting
and for LE controllers it changes the advertising type. For
dual mode controllers it affects both settings.
For LE capable controllers the connectable setting takes effect
when advertising is enabled (peripheral) or when directed
advertising events are received (central).
This command can be used when the controller is not powered and
all settings will be programmed once powered.
When switching connectable off, it will also switch off the
discoverable setting. Switching connectable back on will not
restore a previous discoverable. It will stay off and needs
to be manually switched back on.
When switching connectable off, it will expire a discoverable
setting with a timeout.
This setting does not affect known devices from Add Device
command. These devices are always allowed to connect.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Invalid Index
Set Fast Connectable Command
============================
Command Code: 0x0008
Controller Index: <controller id>
Command Parameters: Enable (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to set the controller into a connectable
state where the page scan parameters have been set in a way to
favor faster connect times with the expense of higher power
consumption.
The allowed values of the Enable command parameter are 0x00 and
0x01. All other values will return Invalid Parameters.
This command is only available for BR/EDR capable controllers
(e.g. not for single-mode LE ones). It will return Not Supported
otherwise.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
The setting will be remembered during power down/up toggles.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Failed
Busy
Not Supported
Invalid Parameters
Invalid Index
Set Bondable Command
====================
Command Code: 0x0009
Controller Index: <controller id>
Command Parameters: Bondable (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to set the bondable property of an
controller. The allowed values for the Bondable command
parameter are 0x00 and 0x01. All other values will return
Invalid Parameters.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
Turning bondable on will not automatically switch the controller
into connectable mode. That needs to be done separately.
The setting will be remembered during power down/up toggles.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Set Link Security Command
=========================
Command Code: 0x000A
Controller Index: <controller id>
Command Parameters: Link_Security (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to either enable or disable link level
security for an controller (also known as Security Mode 3). The
allowed values for the Link_Security command parameter are 0x00
and 0x01. All other values will return Invalid Parameters.
This command is only available for BR/EDR capable controllers
(e.g. not for single-mode LE ones). It will return Not Supported
otherwise.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Invalid Index
Set Secure Simple Pairing Command
=================================
Command Code: 0x000B
Controller Index: <controller id>
Command Parameters: Secure_Simple_Pairing (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to enable/disable Secure Simple Pairing
support for a controller. The allowed values for the
Secure_Simple_Pairing command parameter are 0x00 and 0x01. All
other values will return Invalid Parameters.
This command is only available for BR/EDR capable controllers
supporting the core specification version 2.1 or greater
(e.g. not for single-mode LE controllers or pre-2.1 ones).
This command can be used when the controller is not powered and
all settings will be programmed once powered.
In case the controller does not support Secure Simple Pairing,
the command will fail regardless with Not Supported error.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Invalid Index
Set High Speed Command
======================
Command Code: 0x000C
Controller Index: <controller id>
Command Parameters: High_Speed (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to enable/disable Bluetooth High Speed
support for a controller. The allowed values for the High_Speed
command parameter are 0x00 and 0x01. All other values will
return Invalid Parameters.
This command is only available for BR/EDR capable controllers
(e.g. not for single-mode LE ones).
This command can be used when the controller is not powered and
all settings will be programmed once powered.
To enable High Speed support, it is required that Secure Simple
Pairing support is enabled first. High Speed support is not
possible for connections without Secure Simple Pairing.
When switching Secure Simple Pairing off, the support for High
Speed will be switched off as well. Switching Secure Simple
Pairing back on, will not re-enable High Speed support. That
needs to be done manually.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Not Supported
Invalid Parameters
Invalid Index
Set Low Energy Command
======================
Command Code: 0x000D
Controller Index: <controller id>
Command Parameters: Low_Energy (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to enable/disable Low Energy support for a
controller. The allowed values of the Low_Energy command
parameter are 0x00 and 0x01. All other values will return
Invalid Parameters.
This command is only available for LE capable controllers and
will yield in a Not Supported error otherwise.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
In case the kernel subsystem does not support Low Energy or the
controller does not either, the command will fail regardless.
Disabling LE support will permanently disable and remove all
advertising instances configured with the Add Advertising
command. Advertising Removed events will be issued accordingly.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Invalid Index
Set Device Class
================
Command Code: 0x000E
Controller Index: <controller id>
Command Parameters: Major_Class (1 Octet)
Minor_Class (1 Octet)
Return Parameters: Class_Of_Device (3 Octets)
This command is used to set the major and minor device class for
BR/EDR capable controllers.
This command will also implicitly disable caching of pending CoD
and EIR updates.
This command is only available for BR/EDR capable controllers
(e.g. not for single-mode LE ones).
This command can be used when the controller is not powered and
all settings will be programmed once powered.
In case the controller is powered off, 0x000000 will be returned
for the class of device parameter. And after power on the new
value will be announced via class of device changed event.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Invalid Index
Set Local Name Command
======================
Command Code: 0x000F
Controller Index: <controller id>
Command Parameters: Name (249 Octets)
Short_Name (11 Octets)
Return Parameters: Name (249 Octets)
Short_Name (11 Octets)
This command is used to set the local name of a controller. The
command parameters also include a short name which will be used
in case the full name doesn't fit within EIR/AD data.
The name parameters need to always end with a null byte (failure
to do so will cause the command to fail).
This command can be used when the controller is not powered and
all settings will be programmed once powered.
The values of name and short name will be remembered when
switching the controller off and back on again. So the name
and short name only have to be set once when a new controller
is found and will stay until removed.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Add UUID Command
================
Command Code: 0x0010
Controller Index: <controller id>
Command Parameters: UUID (16 Octets)
SVC_Hint (1 Octet)
Return Parameters: Class_Of_Device (3 Octets)
This command is used to add a UUID to be published in EIR data.
The accompanied SVC_Hint parameter is used to tell the kernel
whether the service class bits of the Class of Device value need
modifying due to this UUID.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
In case the controller is powered off, 0x000000 will be returned
for the class of device parameter. And after power on the new
value will be announced via class of device changed event.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Invalid Parameters
Invalid Index
Remove UUID Command
===================
Command Code: 0x0011
Controller Index: <controller id>
Command Parameters: UUID (16 Octets)
Return Parameters: Class_Of_Device (3 Octets)
This command is used to remove a UUID previously added using the
Add UUID command.
When the UUID parameter is an empty UUID (16 x 0x00), then all
previously loaded UUIDs will be removed.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
In case the controller is powered off, 0x000000 will be returned
for the class of device parameter. And after power on the new
value will be announced via class of device changed event.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Invalid Parameters
Invalid Index
Load Link Keys Command
======================
Command Code: 0x0012
Controller Index: <controller id>
Command Parameters: Debug_Keys (1 Octet)
Key_Count (2 Octets)
Key1 {
Address (6 Octets)
Address_Type (1 Octet)
Key_Type (1 Octet)
Value (16 Octets)
PIN_Length (1 Octet)
}
Key2 { }
...
Return Parameters:
This command is used to feed the kernel with currently known
link keys. The command does not need to be called again upon the
receipt of New Link Key events since the kernel updates its list
automatically.
The Debug_Keys parameter is used to tell the kernel whether to
accept the usage of debug keys or not. The allowed values for
this parameter are 0x00 and 0x01. All other values will return
an Invalid Parameters response.
Usage of the Debug_Keys parameter is deprecated and has been
replaced with the Set Debug Keys command. When setting the
Debug_Keys option via Load Link Keys command it has the same
affect as setting it via Set Debug Keys and applies to all
keys in the system.
Possible values for the Address_Type parameter:
0 BR/EDR
1 Reserved (not in use)
2 Reserved (not in use)
Public and random LE addresses are not valid and will be rejected.
Currently defined Key_Type values are:
0x00 Combination key
0x01 Local Unit key
0x02 Remote Unit key
0x03 Debug Combination key
0x04 Unauthenticated Combination key from P-192
0x05 Authenticated Combination key from P-192
0x06 Changed Combination key
0x07 Unauthenticated Combination key from P-256
0x08 Authenticated Combination key from P-256
This command can be used when the controller is not powered.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Load Long Term Keys Command
===========================
Command Code: 0x0013
Controller Index: <controller id>
Command Parameters: Key_Count (2 Octets)
Key1 {
Address (6 Octets)
Address_Type (1 Octet)
Key_Type (1 Octet)
Master (1 Octet)
Encryption_Size (1 Octet)
Encryption_Diversifier (2 Octets)
Random_Number (8 Octets)
Value (16 Octets)
}
Key2 { }
...
Return Parameters:
This command is used to feed the kernel with currently known
(SMP) Long Term Keys. The command does not need to be called
again upon the receipt of New Long Term Key events since the
kernel updates its list automatically.
Possible values for the Address_Type parameter:
0 Reserved (not in use)
1 LE Public
2 LE Random
The provided Address and Address_Type are the identity of
a device. So either its public address or static random address.
Unresolvable random addresses and resolvable random addresses are
not valid and will be rejected.
Currently defined Key_Type values are:
0x00 Unauthenticated key
0x01 Authenticated key
This command can be used when the controller is not powered.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Disconnect Command
==================
Command Code: 0x0014
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to force the disconnection of a currently
connected device.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Not Connected
Busy
Invalid Parameters
Not Powered
Invalid Index
Get Connections Command
=======================
Command Code: 0x0015
Controller Index: <controller id>
Command Parameters:
Return Parameters: Connection_Count (2 Octets)
Address1 {
Address (6 Octets)
Address_Type (1 Octet)
}
Address2 { }
...
This command is used to retrieve a list of currently connected
devices.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
For devices using resolvable random addresses with a known
identity resolving key, the Address and Address_Type will
contain the identity information.
This command can only be used when the controller is powered.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Not Powered
Invalid Index
PIN Code Reply Command
=======================
Command Code: 0x0016
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
PIN_Length (1 Octet)
PIN_Code (16 Octets)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to respond to a PIN Code request event.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Not Connected
Invalid Parameters
Not Powered
Invalid Index
PIN Code Negative Reply Command
===============================
Command Code: 0x0017
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to return a negative response to a PIN Code
Request event.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Not Connected
Invalid Parameters
Not Powered
Invalid Index
Set IO Capability Command
=========================
Command Code: 0x0018
Controller Index: <controller id>
Command Parameters: IO_Capability (1 Octet)
Return Parameters:
This command is used to set the IO Capability used for pairing.
The command accepts both SSP and SMP values.
Possible values for the IO_Capability parameter:
0 DisplayOnly
1 DisplayYesNo
2 KeyboardOnly
3 NoInputNoOutput
4 KeyboardDisplay
Passing a value 4 (KeyboardDisplay) will cause the kernel to
convert it to 1 (DisplayYesNo) in the case of a BR/EDR
connection (as KeyboardDisplay is specific to SMP).
This command can be used when the controller is not powered.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Pair Device Command
===================
Command Code: 0x0019
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
IO_Capability (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to trigger pairing with a remote device.
The IO_Capability command parameter is used to temporarily (for
this pairing event only) override the global IO Capability (set
using the Set IO Capability command).
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
Possible values for the IO_Capability parameter:
0 DisplayOnly
1 DisplayYesNo
2 KeyboardOnly
3 NoInputNoOutput
4 KeyboardDisplay
Passing a value 4 (KeyboardDisplay) will cause the kernel to
convert it to 1 (DisplayYesNo) in the case of a BR/EDR
connection (as KeyboardDisplay is specific to SMP).
The Address and Address_Type of the return parameters will
return the identity address if known. In case of resolvable
random address given as command parameters and the remote
provides an identity resolving key, the return parameters
will provide the resolved address.
To allow tracking of which resolvable random address changed
into which identity address, the New Identity Resolving Key
event will be sent before receiving Command Complete event
for this command.
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Reject status is used when requested transport is not enabled.
Not Supported status is used if controller is not capable with
requested transport.
Possible errors: Rejected
Not Supported
Connect Failed
Busy
Invalid Parameters
Not Powered
Invalid Index
Already Paired
Cancel Pair Device Command
==========================
Command Code: 0x001A
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
The Address and Address_Type parameters should match what was
given to a preceding Pair Device command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Invalid Parameters
Not Powered
Invalid Index
Unpair Device Command
=====================
Command Code: 0x001B
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Disconnect (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
Removes all keys associated with the remote device.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
The Disconnect parameter tells the kernel whether to forcefully
disconnect any existing connections to the device. It should in
practice always be 1 except for some special GAP qualification
test-cases where a key removal without disconnecting is needed.
When unpairing a device its link key, long term key and if
provided identity resolving key will be purged.
For devices using resolvable random addresses where the identity
resolving key was available, after this command they will now no
longer be resolved. The device will essentially become private
again.
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Not Paired
Invalid Parameters
Not Powered
Invalid Index
User Confirmation Reply Command
===============================
Command Code: 0x001C
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to respond to a User Confirmation Request
event.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Not Connected
Invalid Parameters
Not Powered
Invalid Index
User Confirmation Negative Reply Command
========================================
Command Code: 0x001D
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to return a negative response to a User
Confirmation Request event.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Not Connected
Invalid Parameters
Not Powered
Invalid Index
User Passkey Reply Command
==========================
Command Code: 0x001E
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Passkey (4 Octets)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to respond to a User Confirmation Passkey
Request event.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Not Connected
Invalid Parameters
Not Powered
Invalid Index
User Passkey Negative Reply Command
===================================
Command Code: 0x001F
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to return a negative response to a User
Passkey Request event.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Not Connected
Invalid Parameters
Not Powered
Invalid Index
Read Local Out Of Band Data Command
===================================
Command Code: 0x0020
Controller Index: <controller id>
Command Parameters:
Return Parameters: Hash_192 (16 Octets)
Randomizer_192 (16 Octets)
Hash_256 (16 Octets, Optional)
Randomizer_256 (16 Octets, Optional)
This command is used to read the local Out of Band data.
This command can only be used when the controller is powered.
If Secure Connections support is enabled, then this command
will return P-192 versions of hash and randomizer as well as
P-256 versions of both.
Values returned by this command become invalid when the controller
is powered down. After each power-cycle it is required to call
this command again to get updated values.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Not Supported
Busy
Invalid Parameters
Not Powered
Invalid Index
Add Remote Out Of Band Data Command
===================================
Command Code: 0x0021
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Hash_192 (16 Octets)
Randomizer_192 (16 Octets)
Hash_256 (16 Octets, Optional)
Randomizer_256 (16 Octets, Optional)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to provide Out of Band data for a remote
device.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
Provided Out Of Band data is persistent over power down/up toggles.
This command also accept optional P-256 versions of hash and
randomizer. If they are not provided, then they are set to
zero value.
The P-256 versions of both can also be provided when the
support for Secure Connections is not enabled. However in
that case they will never be used.
To only provide the P-256 versions of hash and randomizer,
it is valid to leave both P-192 fields as zero values. If
Secure Connections is disabled, then of course this is the
same as not providing any data at all.
When providing data for remote LE devices, then the Hash_192 and
and Randomizer_192 fields are not used and shell be set to zero.
The Hash_256 and Randomizer_256 fields can be used for LE secure
connections Out Of Band data. If only LE secure connections data
is provided the Hash_P192 and Randomizer_P192 fields can be set
to zero. Currently there is no support for providing the Security
Manager TK Value for LE legacy pairing.
If Secure Connections Only mode has been enabled, then providing
Hash_P192 and Randomizer_P192 is not allowed. They are required
to be set to zero values.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Failed
Invalid Parameters
Not Powered
Invalid Index
Remove Remote Out Of Band Data Command
======================================
Command Code: 0x0022
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to remove data added using the Add Remote
Out Of Band Data command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
When the Address parameter is 00:00:00:00:00:00, then all
previously added data will be removed.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Invalid Parameters
Not Powered
Invalid Index
Start Discovery Command
=======================
Command Code: 0x0023
Controller Index: <controller id>
Command Parameters: Address_Type (1 Octet)
Return Parameters: Address_Type (1 Octet)
This command is used to start the process of discovering remote
devices. A Device Found event will be sent for each discovered
device.
Possible values for the Address_Type parameter are a bit-wise or
of the following bits:
0 BR/EDR
1 LE Public
2 LE Random
By combining these e.g. the following values are possible:
1 BR/EDR
6 LE (public & random)
7 BR/EDR/LE (interleaved discovery)
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Not Powered
Invalid Index
Stop Discovery Command
======================
Command Code: 0x0024
Controller Index: <controller id>
Command Parameters: Address_Type (1 Octet)
Return Parameters: Address_Type (1 Octet)
This command is used to stop the discovery process started using
the Start Discovery command.
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Rejected
Invalid Parameters
Invalid Index
Confirm Name Command
====================
Command Code: 0x0025
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Name_Known (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is only valid during device discovery and is
expected for each Device Found event with the Confirm Name
flag set.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
The Name_Known parameter should be set to 0x01 if user space
knows the name for the device and 0x00 if it doesn't. If set to
0x00 the kernel will perform a name resolving procedure for the
device in question.
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Failed
Invalid Parameters
Invalid Index
Block Device Command
====================
Command Code: 0x0026
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to add a device to the list of devices
which should be blocked from being connected to the local
controller.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
For Low Energy devices, the blocking of a device takes precedence
over auto-connection actions provided by Add Device. Blocked
devices will not be auto-connected or even reported when found
during background scanning. If the controller is connectable
direct advertising from blocked devices will also be ignored.
Connections created from advertising of the controller will
be dropped if the device is blocked.
This command can be used when the controller is not powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Failed
Invalid Parameters
Invalid Index
Unblock Device Command
======================
Command Code: 0x0027
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to remove a device from the list of blocked
devices (where it was added to using the Block Device command).
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
When the Address parameter is 00:00:00:00:00:00, then all
previously blocked devices will be unblocked.
This command can be used when the controller is not powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Invalid Parameters
Invalid Index
Set Device ID Command
=====================
Command Code: 0x0028
Controller Index: <controller id>
Command Parameters: Source (2 Octets)
Vendor (2 Octets)
Product (2 Octets)
Version (2 Octets)
Return Parameters:
This command can be used when the controller is not powered and
all settings will be programmed once powered.
The Source parameter selects the organization that assigned the
Vendor parameter:
0x0000 Disable Device ID
0x0001 Bluetooth SIG
0x0002 USB Implementer's Forum
The information is put into the EIR data. If the controller does
not support EIR or if SSP is disabled, this command will still
succeed. The information is stored for later use and will survive
toggling SSP on and off.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Set Advertising Command
=======================
Command Code: 0x0029
Controller Index: <controller id>
Command Parameters: Advertising (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to enable LE advertising on a controller
that supports it. The allowed values for the Advertising command
parameter are 0x00, 0x01 and 0x02. All other values will return
Invalid Parameters.
The value 0x00 disables advertising, the value 0x01 enables
advertising with considering of connectable setting and the
value 0x02 enables advertising in connectable mode.
Using value 0x01 means that when connectable setting is disabled,
the advertising happens with undirected non-connectable advertising
packets and a non-resolvable random address is used. If connectable
setting is enabled, then undirected connectable advertising packets
and the identity address or resolvable private address are used.
LE Devices configured via Add Device command with Action 0x01
have no effect when using Advertising value 0x01 since only the
connectable setting is taken into account.
To utilize undirected connectable advertising without changing the
connectable setting, the value 0x02 can be utilized. It makes the
device connectable via LE without the requirement for being
connectable on BR/EDR (and/or LE).
The value 0x02 should be the preferred mode of operation when
implementing peripheral mode.
Using this command will temporarily deactivate any configuration
made by the Add Advertising command. This command takes precedence.
Once a Set Advertising command with value 0x00 is issued any
previously made configurations via Add/Remove Advertising, including
such changes made while Set Advertising was active, will be re-
enabled.
A pre-requisite is that LE is already enabled, otherwise this
command will return a "rejected" response.
This command generates a Command Complete event on success or a
Command Status event on failure.
Possible errors: Busy
Rejected
Not Supported
Invalid Parameters
Invalid Index
Set BR/EDR Command
==================
Command Code: 0x002A
Controller Index: <controller id>
Command Parameters: BR/EDR (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to enable or disable BR/EDR support
on a dual-mode controller. The allowed values for the Advertising
command parameter are 0x00 and 0x01. All other values will
return Invalid Parameters.
A pre-requisite is that LE is already enabled, otherwise
this command will return a "rejected" response. Enabling BR/EDR
can be done both when powered on and powered off, however
disabling it can only be done when powered off (otherwise the
command will again return "rejected"). Disabling BR/EDR will
automatically disable all other BR/EDR related settings.
This command generates a Command Complete event on success or a
Command Status event on failure.
Possible errors: Busy
Rejected
Not Supported
Invalid Parameters
Invalid Index
Set Static Address Command
==========================
Command Code: 0x002B
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Return Parameters: Current_Settings (4 Octets)
This command allows for setting the static random address. It is
only supported on controllers with LE support. The static random
address is suppose to be valid for the lifetime of the
controller or at least until the next power cycle. To ensure
such behavior, setting of the address is limited to when the
controller is powered off.
The special BDADDR_ANY address (00:00:00:00:00:00) can be used
to disable the static address.
When a controller has a public address (which is required for
all dual-mode controllers), this address is not used. If a dual-mode
controller is configured as Low Energy only devices (BR/EDR has
been switched off), then the static address is used. Only when
the controller information reports BDADDR_ANY (00:00:00:00:00:00),
it is required to configure a static address first.
If privacy mode is enabled and the controller is single mode
LE only without a public address, the static random address is
used as identity address.
The Static Address flag from the current settings can also be used
to determine if the configured static address is in use or not.
This command generates a Command Complete event on success or a
Command Status event on failure.
Possible errors: Rejected
Not Supported
Invalid Parameters
Invalid Index
Set Scan Parameters Command
===========================
Command Code: 0x002C
Controller Index: <controller id>
Command Parameters: Interval (2 Octets)
Window (2 Octets)
Return Parameters:
This command allows for setting the Low Energy scan parameters
used for connection establishment and passive scanning. It is
only supported on controllers with LE support.
This command generates a Command Complete event on success or a
Command Status event on failure.
Possible errors: Rejected
Not Supported
Invalid Parameters
Invalid Index
Set Secure Connections Command
==============================
Command Code: 0x002D
Controller Index: <controller id>
Command Parameters: Secure_Connections (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to enable/disable Secure Connections
support for a controller. The allowed values for the
Secure_Connections command parameter are 0x00, 0x01 and 0x02.
All other values will return Invalid Parameters.
The value 0x00 disables Secure Connections, the value 0x01
enables Secure Connections and the value 0x02 enables Secure
Connections Only mode.
This command is only available for LE capable controllers as
well as controllers supporting the core specification version
4.1 or greater.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
In case the controller does not support Secure Connections
the command will fail regardless with Not Supported error.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Invalid Index
Set Debug Keys Command
======================
Command Code: 0x002E
Controller Index: <controller id>
Command Parameters: Debug_Keys (1 Octet)
Return Parameters: Current_Settings (4 Octets)
This command is used to tell the kernel whether to accept the
usage of debug keys or not. The allowed values for this parameter
are 0x00, 0x01 and 0x02. All other values will return an Invalid
Parameters response.
With a value of 0x00 any generated debug key will be discarded
as soon as the connection terminates.
With a value of 0x01 generated debug keys will be kept and can
be used for future connections. However debug keys are always
marked as non persistent and should not be stored. This means
a reboot or changing the value back to 0x00 will delete them.
With a value of 0x02 generated debug keys will be kept and can
be used for future connections. This has the same affect as
with value 0x01. However in addition this value will also
enter the controller mode to generate debug keys for each
new pairing. Changing the value back to 0x01 or 0x00 will
disable the controller mode for generating debug keys.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Invalid Index
Set Privacy Command
===================
Command Code: 0x002F
Controller Index: <controller id>
Command Parameters: Privacy (1 Octet)
Identity_Resolving_Key (16 Octets)
Return Parameters: Current_Settings (4 Octets)
This command is used to enable Low Energy Privacy feature using
resolvable private addresses.
The value 0x00 disables privacy mode, the values 0x01 and 0x02
enable privacy mode.
With value 0x01 the kernel will always use the privacy mode. This
means resolvable private address is used when the controller is
discoverable and also when pairing is initiated.
With value 0x02 the kernel will use a limited privacy mode with a
resolvable private address except when the controller is bondable
and discoverable, in which case the identity address is used.
Exposing the identity address when bondable and discoverable or
during initiated pairing can be a privacy issue. For dual-mode
controllers this can be neglected since its public address will
be exposed over BR/EDR anyway. The benefit of exposing the
identity address for pairing purposes is that it makes matching
up devices with dual-mode topology during device discovery now
possible.
If the privacy value 0x02 is used, then also the GATT database
should expose the Privacy Characteristic so that remote devices
can determine if the privacy feature is in use or not.
When the controller has a public address (mandatory for dual-mode
controllers) it is used as identity address. In case the controller
is single mode LE only without a public address, it is required
to configure a static random address first. The privacy mode can
only be enabled when an identity address is available.
The Identity_Resolving_Key is the local key assigned for the local
resolvable private address.
Possible errors: Busy
Not Supported
Invalid Parameters
Invalid Index
Load Identity Resolving Keys Command
====================================
Command Code: 0x0030
Controller Index: <controller id>
Command Parameters: Key_Count (2 Octets)
Key1 {
Address (6 Octets)
Address_Type (1 Octet)
Value (16 Octets)
}
Key2 { }
...
Return Parameters:
This command is used to feed the kernel with currently known
identity resolving keys. The command does not need to be called
again upon the receipt of New Identity Resolving Key events
since the kernel updates its list automatically.
Possible values for the Address_Type parameter:
0 Reserved (not in use)
1 LE Public
2 LE Random
The provided Address and Address_Type are the identity of
a device. So either its public address or static random address.
Unresolvable random addresses and resolvable random addresses are
not valid and will be rejected.
This command can be used when the controller is not powered.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Get Connection Information Command
==================================
Command Code: 0x0031
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
RSSI (1 Octet)
TX_Power (1 Octet)
Max_TX_Power (1 Octet)
This command is used to get connection information.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
TX_Power and Max_TX_Power can be set to 127 if values are invalid or
unknown. A value of 127 for RSSI indicates that it is not available.
This command generates a Command Complete event on success and
on failure. In case of failure only Address and Address_Type fields
are valid and values of remaining parameters are considered invalid
and shall be ignored.
Possible errors: Not Connected
Not Powered
Invalid Parameters
Invalid Index
Get Clock Information Command
=============================
Command Code: 0x0032
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
Local_Clock (4 Octets)
Piconet_Clock (4 Octets)
Accuracy (2 Octets)
This command is used to get local and piconet clock information.
Possible values for the Address_Type parameter:
0 BR/EDR
1 Reserved (not in use)
2 Reserved (not in use)
The Accuracy can be set to 0xffff which means the value is unknown.
If the Address is set to 00:00:00:00:00:00, then only the
Local_Clock field has a valid value. The Piconet_Clock and
Accuracy fields are invalid and shall be ignored.
This command generates a Command Complete event on success and
on failure. In case of failure only Address and Address_Type fields
are valid and values of remaining parameters are considered invalid
and shall be ignored.
Possible errors: Not Connected
Not Powered
Invalid Parameters
Invalid Index
Add Device Command
==================
Command Code: 0x0033
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Action (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to add a device to the action list. The
action list allows scanning for devices and enables incoming
connections from known devices.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
Possible values for the Action parameter:
0 Background scan for device
1 Allow incoming connection
2 Auto-connect remote device
With the Action 0, when the device is found, a new Device Found
event will be sent indicating this device is available. This
action is only valid for LE Public and LE Random address types.
With the Action 1, the device is allowed to connect. For BR/EDR
address type this means an incoming connection. For LE Public
and LE Random address types, a connection will be established
to devices using directed advertising. If successful a Device
Connected event will be sent.
With the Action 2, when the device is found, it will be connected
and if successful a Device Connected event will be sent. This
action is only valid for LE Public and LE Random address types.
When a device is blocked using Block Device command, then it is
valid to add the device here, but all actions will be ignored
until the device is unblocked.
Devices added with Action 1 are allowed to connect even if the
connectable setting is off. This acts as list of known trusted
devices.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Failed
Invalid Parameters
Invalid Index
Remove Device Command
=====================
Command Code: 0x0034
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
Address_Type (1 Octet)
This command is used to remove a device from the action list
previously added by using the Add Device command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
When the Address parameter is 00:00:00:00:00:00, then all
previously added devices will be removed.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Invalid Parameters
Invalid Index
Load Connection Parameters Command
==================================
Command Code: 0x0035
Controller Index: <controller id>
Command Parameters: Param_Count (2 Octets)
Param1 {
Address (6 Octets)
Address_Type (1 Octet)
Min_Connection_Interval (2 Octets)
Max_Connection_Interval (2 Octets)
Connection_Latency (2 Octets)
Supervision_Timeout (2 Octets)
}
Param2 { }
...
Return Parameters:
This command is used to load connection parameters from several
devices into kernel. Currently this is only supported on controllers
with Low Energy support.
Possible values for the Address_Type parameter:
0 Reserved (not in use)
1 LE Public
2 LE Random
The provided Address and Address_Type are the identity of
a device. So either its public address or static random address.
The Min_Connection_Interval, Max_Connection_Interval,
Connection_Latency and Supervision_Timeout parameters should
be configured as described in Core 4.1 spec, Vol 2, 7.8.12.
This command can be used when the controller is not powered.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Not Supported
Read Unconfigured Controller Index List Command
===============================================
Command Code: 0x0036
Controller Index: <non-controller>
Command Parameters:
Return Parameters: Num_Controllers (2 Octets)
Controller_Index[i] (2 Octets)
This command returns the list of currently unconfigured controllers.
Unconfigured controllers added after calling this command can be
monitored using the Unconfigured Index Added event.
An unconfigured controller can either move to a configured state
by indicating Unconfigured Index Removed event followed by an
Index Added event; or it can be removed from the system which
would be indicated by the Unconfigured Index Removed event.
Only controllers that require configuration will be listed with
this command. A controller that is fully configured will not
be listed even if it supports configuration changes.
This command generates a Command Complete event on success or
a Command Status event on failure.
Read Controller Configuration Information Command
=================================================
Command Code: 0x0037
Controller Index: <controller id>
Command Parameters:
Return Parameters: Manufacturer (2 Octets)
Supported_Options (4 Octets)
Missing_Options (4 Octets)
This command is used to retrieve the supported configuration
options of a controller and the missing configuration options.
The missing options are required to be configured before the
controller is considered fully configured and ready for standard
operation. The command is typically used right after getting the
response to Read Unconfigured Controller Index List command or
Unconfigured Index Added event.
Supported_Options and Missing_Options is a bitmask with currently
the following available bits:
0 External configuration
1 Bluetooth public address configuration
It is valid to call this command on controllers that do not
require any configuration. It is possible that a fully configured
controller offers additional support for configuration.
For example a controller may contain a valid Bluetooth public
device address, but also allows to configure it from the host
stack. In this case the general support for configurations will
be indicated by the Controller Configuration settings. For
controllers where no configuration options are available that
setting option will not be present.
When all configurations have been completed and as a result the
Missing_Options mask would become empty, then the now ready
controller will be announced via Index Added event.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Set External Configuration Command
==================================
Command Code: 0x0038
Controller Index: <controller id>
Command Parameters: Configuration (1 Octet)
Return Parameters: Missing_Options (4 Octets)
This command allows to change external configuration option to
indicate that a controller is now configured or unconfigured.
The value 0x00 sets unconfigured state and the value 0x01 sets
configured state of the controller.
It is not mandatory that this configuration option is provided
by a controller. If it is provided, the configuration has to
happen externally using user channel operation or via vendor
specific methods.
Setting this option and when Missing_Options returns zero, this
means that the controller will switch to configured state and it
can be expected that it will be announced via Index Added event.
Wrongly configured controllers might still cause an error when
trying to power them via Set Powered command.
This command generates a Command Complete event on success or a
Command Status event on failure.
Possible errors: Rejected
Not Supported
Invalid Parameters
Invalid Index
Set Public Address Command
==========================
Command Code: 0x0039
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
Return Parameters: Missing_Options (4 Octets)
This command allows configuration of public address. Since a vendor
specific procedure is required, this command might not be supported
by all controllers. Actually most likely only a handful embedded
controllers will offer support for this command.
When the support for Bluetooth public address configuration is
indicated in the supported options mask, then this command
can be used to configure the public address.
It is only possible to configure the public address when the
controller is powered off.
For an unconfigured controller and when Missing_Options returns
an empty mask, this means that a Index Added event for the now
fully configured controller can be expected.
For a fully configured controller, the current controller index
will become invalid and an Unconfigured Index Removed event will
be sent. Once the address has been successfully changed an Index
Added event will be sent. There is no guarantee that the controller
index stays the same.
All previous configured parameters and settings are lost when
this command succeeds. The controller has to be treated as new
one. Use this command for a fully configured controller only when
you really know what you are doing.
This command generates a Command Complete event on success or a
Command Status event on failure.
Possible errors: Rejected
Not Supported
Invalid Parameters
Invalid Index
Start Service Discovery Command
===============================
Command Code: 0x003a
Controller Index: <controller id>
Command Parameters: Address_Type (1 Octet)
RSSI_Threshold (1 Octet)
UUID_Count (2 Octets)
UUID[i] (16 Octets)
Return Parameters: Address_Type (1 Octet)
This command is used to start the process of discovering remote
devices with a specific UUID. A Device Found event will be sent
for each discovered device.
Possible values for the Address_Type parameter are a bit-wise or
of the following bits:
0 BR/EDR
1 LE Public
2 LE Random
By combining these e.g. the following values are possible:
1 BR/EDR
6 LE (public & random)
7 BR/EDR/LE (interleaved discovery)
The service discovery uses active scanning for Low Energy scanning
and will search for UUID in both advertising data and scan response
data.
Found devices that have a RSSI value smaller than RSSI_Threshold
are not reported via DeviceFound event. Setting a value of 127
will cause all devices to be reported.
The list of UUIDs identifies a logical OR. Only one of the UUIDs
have to match to cause a DeviceFound event. Providing an empty
list of UUIDs with Num_UUID set to 0 which means that DeviceFound
events are send out for all devices above the RSSI_Threshold.
In case RSSI_Threshold is set to 127 and UUID_Count is 0, then
this command behaves exactly the same as Start Discovery.
When the discovery procedure starts the Discovery event will
notify this similar to Start Discovery.
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Not Powered
Invalid Index
Read Local Out Of Band Extended Data Command
============================================
Command Code: 0x003b
Controller Index: <controller id>
Command Parameters: Address_Type (1 Octet)
Return Parameters: Address_Type (1 Octet)
EIR_Data_Length (2 Octets)
EIR_Data (0-65535 Octets)
This command is used to read the local Out of Band data
information and provide them encoded as extended inquiry
response information or advertising data.
Possible values for the Address_Type parameter are a bit-wise or
of the following bits:
0 BR/EDR
1 LE Public
2 LE Random
By combining these e.g. the following values are possible:
1 BR/EDR
6 LE (public & random)
7 Reserved (not in use)
For BR/EDR controller (Address_Type 1) the returned information
will contain the following information:
Class of Device
Simple Pairing Hash C-192 (optional)
Simple Pairing Randomizer R-192 (optional)
Simple Pairing Hash C-256 (optional)
Simple Pairing Randomizer R-256 (optional)
Service Class UUID (optional)
Bluetooth Local Name (optional)
The Simple Pairing Hash C-256 and Simple Pairing Randomizer R-256
fields are only included when secure connections has been enabled.
The Device Address (BD_ADDR) is not included in the EIR_Data and
needs to be taken from controller information.
For LE controller (Address_Type 6) the returned information
will contain the following information:
LE Bluetooth Device Address
LE Role
LE Secure Connections Confirmation Value (optional)
LE Secure Connections Random Value (optional)
Appearance (optional)
Local Name (optional)
Flags
The LE Secure Connections Confirmation Value and LE Secure Connections
Random Value fields are only included when secure connections has been
enabled.
The Security Manager TK Value from the Bluetooth specification can
not be provided by this command. The Out Of Band information here are
for asymmetric exchanges based on Diffie-Hellman key exchange. The
Security Manager TK Value is a symmetric random number that has to
be acquired and agreed upon differently.
The returned information from BR/EDR controller and LE controller
types are not related to each other. Once they have been used
over an Out Of Band link, a new set of information shall be
requested.
When Secure Connections Only mode has been enabled, then the fields
for Simple Pairing Hash C-192 and Simple Pairing Randomizer R-192
are not returned. Only the fields for the strong secure connections
pairing are included.
This command can only be used when the controller is powered.
Values returned by this command become invalid when the controller
is powered down. After each power-cycle it is required to call
this command again to get updated information.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Not Supported
Busy
Invalid Parameters
Not Powered
Invalid Index
Read Extended Controller Index List Command
===========================================
Command Code: 0x003c
Controller Index: <non-controller>
Command Parameters:
Return Parameters: Num_Controllers (2 Octets)
Controller_Index[i] (2 Octets)
Controller_Type[i] (1 Octet)
Controller_Bus[i] (1 Octet)
This command returns the list of currently known controllers. It
includes configured, unconfigured and alternate controllers.
Controllers added or removed after calling this command can be
be monitored using the Extended Index Added and Extended Index
Removed events.
The existing Index Added, Index Removed, Unconfigured Index Added
and Unconfigured Index Removed are no longer sent after this command
has been used at least once.
Instead of calling Read Controller Index List and Read Unconfigured
Controller Index List, this command combines all the information
and can be used to retrieve the controller list.
The Controller_Type parameter has these values:
0x00 Primary Controller (BR/EDR and/or LE)
0x01 Unconfigured Controller (BR/EDR and/or LE)
0x02 Alternate MAC/PHY Controller (AMP)
The 0x00 and 0x01 types indicate a primary BR/EDR and/or LE
controller. The difference is just if they need extra configuration
or if they are fully configured.
Controllers in configured state will be listed as 0x00 and controllers
in unconfigured state will be listed as 0x01. A controller that is
fully configured and supports configuration changes will be listed
as 0x00.
Alternate MAC/PHY controllers will be listed as 0x02. They do not
support the difference between configured and unconfigured state.
The Controller_Bus parameter has these values:
0x00 Virtual
0x01 USB
0x02 PCMCIA
0x03 UART
0x04 RS232
0x05 PCI
0x06 SDIO
0x07 SPI
0x08 I2C
0x09 SMD
Controllers marked as RAW only operation are currently not listed
by this command.
This command generates a Command Complete event on success or
a Command Status event on failure.
Read Advertising Features Command
=================================
Command Code: 0x003d
Controller Index: <controller id>
Command Parameters:
Return Parameters: Supported_Flags (4 Octets)
Max_Adv_Data_Len (1 Octet)
Max_Scan_Rsp_Len (1 Octet)
Max_Instances (1 Octet)
Num_Instances (1 Octet)
Instance[i] (1 Octet)
This command is used to read the advertising features supported
by the controller and stack.
With the Supported_Flags field the possible values for the Flags
field in Add Advertising command provided:
0 Switch into Connectable mode
1 Advertise as Discoverable
2 Advertise as Limited Discoverable
3 Add Flags field to Adv_Data
4 Add TX Power field to Adv_Data
5 Add Appearance field to Scan_Rsp
6 Add Local Name in Scan_Rsp
7 Secondary Channel with LE 1M
8 Secondary Channel with LE 2M
9 Secondary Channel with LE Coded
The Flags bit 0 indicates support for connectable advertising
and for switching to connectable advertising independent of the
connectable global setting. When this flag is not supported, then
the global connectable setting determines if undirected connectable,
undirected scannable or undirected non-connectable advertising is
used. It also determines the use of non-resolvable random address
versus identity address or resolvable private address.
The Flags bit 1 indicates support for advertising with discoverable
mode enabled. Users of this flag will decrease the Max_Adv_Data_Len
by 3 octets. In this case the advertising data flags are managed
and added in front of the provided advertising data.
The Flags bit 2 indicates support for advertising with limited
discoverable mode enabled. Users of this flag will decrease the
Max_Adv_Data_Len by 3 octets. In this case the advertising data
flags are managed and added in front of the provided advertising
data.
The Flags bit 3 indicates support for automatically keeping the
Flags field of the advertising data updated. Users of this flag
will decrease the Max_Adv_Data_Len by 3 octets and need to keep
that in mind. The Flags field will be added in front of the
advertising data provided by the user. Note that with Flags bit 1
and Flags bit 2, this one will be implicitly used even if it is
not marked as supported.
The Flags bit 4 indicates support for automatically adding the
TX Power value to the advertising data. Users of this flag will
decrease the Max_Adv_Data_Len by 3 octets. The TX Power field will
be added at the end of the user provided advertising data. If the
controller does not support TX Power information, then this bit will
not be set.
The Flags bit 5 indicates support for automatically adding the
Appearance value to the scan response data. Users of this flag
will decrease the Max_Scan_Rsp_len by 4 octets. The Appearance
field will be added in front of the scan response data provided
by the user. If the appearance value is not supported, then this
bit will not be set.
The Flags bit 6 indicates support for automatically adding the
Local Name value to the scan response data. This flag indicates
an opportunistic approach for the Local Name. If enough space
in the scan response data is available, it will be added. If the
space is limited a short version or no name information. The
Local Name will be added at the end of the scan response data.
The Flags bit 7 indicates support for advertising in secondary
channel in LE 1M PHY.
The Flags bit 8 indicates support for advertising in secondary
channel in LE 2M PHY. Primary channel would be on 1M.
The Flags bit 9 indicates support for advertising in secondary
channel in LE CODED PHY.
The valid range for Instance identifiers is 1-254. The value 0
is reserved for internal use and the value 255 is reserved for
future extensions. However the Max_Instances value for indicating
the number of supported Instances can be also 0 if the controller
does not support any advertising.
The Max_Adv_Data_Len and Max_Scan_Rsp_Len provides extra
information about the maximum length of the data fields. For
now this will always return the value 31. Different flags
however might decrease the actual available length in these
data fields.
With Num_Instances and Instance array the currently occupied
Instance identifiers can be retrieved.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Add Advertising Command
=======================
Command Code: 0x003e
Controller Index: <controller id>
Command Parameters: Instance (1 Octet)
Flags (4 Octets)
Duration (2 Octets)
Timeout (2 Octets)
Adv_Data_Len (1 Octet)
Scan_Rsp_len (1 Octet)
Adv_Data (0-255 Octets)
Scan_Rsp (0-255 Octets)
Return Parameters: Instance (1 Octet)
This command is used to configure an advertising instance that
can be used to switch a Bluetooth Low Energy controller into
advertising mode.
Added advertising information with this command will not be visible
immediately if advertising is enabled via the Set Advertising
command. The usage of the Set Advertising command takes precedence
over this command. Instance information is stored and will be
advertised once advertising via Set Advertising has been disabled.
The Instance identifier is a value between 1 and the number of
supported instances. The value 0 is reserved.
With the Flags value the type of advertising is controlled and
the following flags are defined:
0 Switch into Connectable mode
1 Advertise as Discoverable
2 Advertise as Limited Discoverable
3 Add Flags field to Adv_Data
4 Add TX Power field to Adv_Data
5 Add Appearance field to Scan_Rsp
6 Add Local Name in Scan_Rsp
7 Secondary Channel with LE 1M
8 Secondary Channel with LE 2M
9 Secondary Channel with LE Coded
When the connectable flag is set, then the controller will use
undirected connectable advertising. The value of the connectable
setting can be overwritten this way. This is useful to switch a
controller into connectable mode only for LE operation. This is
similar to the mode 0x02 from the Set Advertising command.
When the connectable flag is not set, then the controller will
use advertising based on the connectable setting. When using
non-connectable or scannable advertising, the controller will
be programmed with a non-resolvable random address. When the
system is connectable, then the identity address or resolvable
private address will be used.
Using the connectable flag is useful for peripheral mode support
where BR/EDR (and/or LE) is controlled by Add Device. This allows
making the peripheral connectable without having to interfere
with the global connectable setting.
If Scan_Rsp_Len is zero and connectable flag is not set and
the global connectable setting is off, then non-connectable
advertising is used. If Scan_Rsp_Len is larger than zero and
connectable flag is not set and the global advertising is off,
then scannable advertising is used. This small difference is
supported to provide less air traffic for devices implementing
broadcaster role.
Secondary channel flags can be used to advertise in secondary
channel with the corresponding PHYs. These flag bits are mutually
exclusive and setting multiple will result in Invalid Parameter
error. Choosing either LE 1M or LE 2M will result in using
extended advertising on the primary channel with LE 1M and the
respectively LE 1M or LE 2M on the secondary channel. Choosing
LE Coded will result in using extended advertising on the primary
and secondary channels with LE Coded. Choosing none of these flags
will result in legacy advertising.
The Duration parameter configures the length of an Instance. The
value is in seconds.
A value of 0 indicates a default value is chosen for the
Duration. The default is 2 seconds.
If only one advertising Instance has been added, then the Duration
value will be ignored. It only applies for the case where multiple
Instances are configured. In that case every Instance will be
available for the Duration time and after that it switches to
the next one. This is a simple round-robin based approach.
The Timeout parameter configures the life-time of an Instance. In
case the value 0 is used it indicates no expiration time. If a
timeout value is provided, then the advertising Instance will be
automatically removed when the timeout passes. The value for the
timeout is in seconds. Powering down a controller will invalidate
all advertising Instances and it is not possible to add a new
Instance with a timeout when the controller is powered down.
When a Timeout is provided, then the Duration subtracts from
the actual Timeout value of that Instance. For example an Instance
with Timeout of 5 and Duration of 2 will be scheduled exactly 3
times, twice with 2 seconds and once with one second. Other
Instances have no influence on the Timeout.
Re-adding an already existing instance (i.e. issuing the Add
Advertising command with an Instance identifier of an existing
instance) will update that instance's configuration.
An instance being added or changed while another instance is
being advertised will not be visible immediately but only when
the new/changed instance is being scheduled by the round robin
advertising algorithm.
Changes to an instance that is currently being advertised will
cancel that instance and switch to the next instance. The changes
will be visible the next time the instance is scheduled for
advertising. In case a single instance is active, this means
that changes will be visible right away.
A pre-requisite is that LE is already enabled, otherwise this
command will return a "rejected" response.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
This command generates a Command Complete event on success or a
Command Status event on failure.
Possible errors: Failed
Rejected
Not Supported
Invalid Parameters
Invalid Index
Remove Advertising Command
==========================
Command Code: 0x003f
Controller Index: <controller id>
Command Parameters: Instance (1 Octet)
Return Parameters: Instance (1 Octet)
This command is used to remove an advertising instance that
can be used to switch a Bluetooth Low Energy controller into
advertising mode.
When the Instance parameter is zero, then all previously added
advertising Instances will be removed.
Removing advertising information with this command will not be
visible as long as advertising is enabled via the Set Advertising
command. The usage of the Set Advertising command takes precedence
over this command. Changes to Instance information are stored and
will be advertised once advertising via Set Advertising has been
disabled.
Removing an instance while it is being advertised will immediately
cancel the instance, even when it has been advertised less then its
configured Timeout or Duration.
This command can be used when the controller is not powered and
all settings will be programmed once powered.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Get Advertising Size Information Command
========================================
Command Code: 0x0040
Controller Index: <controller id>
Command Parameters: Instance (1 Octet)
Flags (4 Octets)
Return Parameters: Instance (1 Octet)
Flags (4 Octets)
Max_Adv_Data_Len (1 Octet)
Max_Scan_Rsp_Len (1 Octet)
The Read Advertising Features command returns the overall maximum
size of advertising data and scan response data fields. That size is
valid when no Flags are used. However when certain Flags are used,
then the size might decrease. This command can be used to request
detailed information about the maximum available size.
The following Flags values are defined:
0 Switch into Connectable mode
1 Advertise as Discoverable
2 Advertise as Limited Discoverable
3 Add Flags field to Adv_Data
4 Add TX Power field to Adv_Data
5 Add Appearance field to Scan_Rsp
6 Add Local Name in Scan_Rsp
To get accurate information about the available size, the same Flags
values should be used with the Add Advertising command.
The Max_Adv_Data_Len and Max_Scan_Rsp_Len fields provide information
about the maximum length of the data fields for the given Flags
values. When the Flags field is zero, then these fields would contain
the same values as Read Advertising Features.
Possible errors: Invalid Parameters
Invalid Index
Start Limited Discovery Command
===============================
Command Code: 0x0041
Controller Index: <controller id>
Command Parameters: Address_Type (1 Octet)
Return Parameters: Address_Type (1 Octet)
This command is used to start the process of discovering remote
devices using the limited discovery procedure. A Device Found event
will be sent for each discovered device.
Possible values for the Address_Type parameter are a bit-wise or
of the following bits:
0 BR/EDR
1 LE Public
2 LE Random
By combining these e.g. the following values are possible:
1 BR/EDR
6 LE (public & random)
7 BR/EDR/LE (interleaved discovery)
The limited discovery uses active scanning for Low Energy scanning
and will search for devices with the limited discoverability flag
configured. On BR/EDR it uses LIAC and filters on the limited
discoverability flag of the class of device.
When the discovery procedure starts the Discovery event will
notify this similar to Start Discovery.
This command can only be used when the controller is powered.
This command generates a Command Complete event on success
or failure.
Possible errors: Busy
Not Supported
Invalid Parameters
Not Powered
Invalid Index
Read Extended Controller Information Command
============================================
Command Code: 0x0042
Controller Index: <controller id>
Command Parameters:
Return Parameters: Address (6 Octets)
Bluetooth_Version (1 Octet)
Manufacturer (2 Octets)
Supported_Settings (4 Octets)
Current_Settings (4 Octets)
EIR_Data_Length (2 Octets)
EIR_Data (0-65535 Octets)
This command is used to retrieve the current state and basic
information of a controller. It is typically used right after
getting the response to the Read Controller Index List command
or an Index Added event (or its extended counterparts).
The Address parameter describes the controllers public address
and it can be expected that it is set. However in case of single
mode Low Energy only controllers it can be 00:00:00:00:00:00. To
power on the controller in this case, it is required to configure
a static address using Set Static Address command first.
If the public address is set, then it will be used as identity
address for the controller. If no public address is available,
then the configured static address will be used as identity
address.
In the case of a dual-mode controller with public address that
is configured as Low Energy only device (BR/EDR switched off),
the static address is used when set and public address otherwise.
Current_Settings and Supported_Settings is a bitmask with
currently the following available bits:
0 Powered
1 Connectable
2 Fast Connectable
3 Discoverable
4 Bondable
5 Link Level Security (Sec. mode 3)
6 Secure Simple Pairing
7 Basic Rate/Enhanced Data Rate
8 High Speed
9 Low Energy
10 Advertising
11 Secure Connections
12 Debug Keys
13 Privacy
14 Controller Configuration
15 Static Address
The EIR_Data field contains information about class of device,
local name and other values. Not all of them might be present. For
example a Low Energy only device does not contain class of device
information.
When any of the values in the EIR_Data field changes, the event
Extended Controller Information Changed will be used to inform
clients about the updated information.
This command generates a Command Complete event on success or
a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Set Appearance Command
======================
Command Code: 0x0042
Controller Index: <controller id>
Command Parameters: Appearance (2 Octets)
Return Parameters:
This command is used to set the appearance value of a controller.
This command can be used when the controller is not
powered and all settings will be programmed once powered.
The value of appearance will be remembered when switching
the controller off and back on again. So the appearance only
have to be set once when a new controller is found and will
stay until removed.
This command generates a Command Complete event on success
or a Command Status event on failure.
This command is only available for LE capable controllers.
It will return Not Supported otherwise.
Possible errors: Not Supported
Invalid Parameters
Invalid Index
Get PHY Configuration Command
=============================
Command Code: 0x0043
Controller Index: <controller id>
Command Parameters:
Return Parameters: Supported_PHYs (4 Octet)
Configurable_PHYs (4 Octets)
Selected_PHYs (4 Octet)
The PHYs parameters are a bitmask with currently the
following available bits:
0 BR 1M 1-Slot
1 BR 1M 3-Slot
2 BR 1M 5-Slot
3 EDR 2M 1-Slot
4 EDR 2M 3-Slot
5 EDR 2M 5-Slot
6 EDR 3M 1-Slot
7 EDR 3M 3-Slot
8 EDR 3M 5-Slot
9 LE 1M TX
10 LE 1M RX
11 LE 2M TX
12 LE 2M RX
13 LE Coded TX
14 LE Coded RX
If BR/EDR is supported, then BR 1M 1-Slot is supported by
default and can also not be deselected. If LE is supported,
then LE 1M TX and LE 1M RX are supported by default.
Disabling BR/EDR completely or respectively LE has no impact
on the PHY configuration. It is remembered over power cycles.
This command generates a Command Complete event on success
or a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Set PHY Configuration Command
=============================
Command Code: 0x0044
Controller Index: <controller id>
Command Parameters: Selected_PHYs (4 Octet)
Return Parameters:
This command is used to set the default PHY to the controller.
This will be stored and used for all the subsequent scanning
and connection initiation.
The list of supported PHYs can be retrieved via the
Get PHY Configuration command. Selecting unsupported or
deselecting default PHYs will result in an Invalid Parameter
error.
This can be called at any point to change the Selected PHYs.
Refer Get PHY Configuration command for PHYs parameter.
This command generates a Command Complete event on success
or a Command Status event on failure.
Possible errors: Invalid Parameters
Invalid Index
Command Complete Event
======================
Event Code: 0x0001
Controller Index: <controller id> or <non-controller>
Event Parameters: Command_Opcode (2 Octets)
Status (1 Octet)
Return_Parameters
This event is an indication that a command has completed. The
fixed set of parameters includes the opcode to identify the
command that completed as well as a status value to indicate
success or failure. The rest of the parameters are command
specific and documented in the section for each command
separately.
Command Status Event
====================
Event Code: 0x0002
Controller Index: <controller id> or <non-controller>
Event Parameters: Command_Opcode (2 Octets)
Status (1 Octet)
The command status event is used to indicate an early status for
a pending command. In the case that the status indicates failure
(anything else except success status) this also means that the
command has finished executing.
Controller Error Event
======================
Event Code: 0x0003
Controller Index: <controller id>
Event Parameters: Error_Code (1 Octet)
This event maps straight to the HCI Hardware Error event and is
used to indicate something wrong with the controller hardware.
Index Added Event
=================
Event Code: 0x0004
Controller Index: <controller id>
Event Parameters:
This event indicates that a new controller has been added to the
system. It is usually followed by a Read Controller Information
command.
Once the Read Extended Controller Index List command has been
used at least once, the Extended Index Added event will be
send instead of this one.
Index Removed Event
===================
Event Code: 0x0005
Controller Index: <controller id>
Event Parameters:
This event indicates that a controller has been removed from the
system.
Once the Read Extended Controller Index List command has been
used at least once, the Extended Index Removed event will be
send instead of this one.
New Settings Event
==================
Event Code: 0x0006
Controller Index: <controller id>
Event Parameters: Current_Settings (4 Octets)
This event indicates that one or more of the settings for a
controller has changed.
Class Of Device Changed Event
=============================
Event Code: 0x0007
Controller Index: <controller id>
Event Parameters: Class_Of_Device (3 Octets)
This event indicates that the Class of Device value for the
controller has changed. When the controller is powered off the
Class of Device value will always be reported as zero.
Local Name Changed Event
========================
Event Code: 0x0008
Controller Index: <controller id>
Event Parameters: Name (249 Octets)
Short_Name (11 Octets)
This event indicates that the local name of the controller has
changed.
New Link Key Event
==================
Event Code: 0x0009
Controller Index: <controller id>
Event Parameters: Store_Hint (1 Octet)
Key {
Address (6 Octets)
Address_Type (1 Octet)
Key_Type (1 Octet)
Value (16 Octets)
PIN_Length (1 Octet)
}
This event indicates that a new link key has been generated for a
remote device.
The Store_Hint parameter indicates whether the host is expected
to store the key persistently or not (e.g. this would not be set
if the authentication requirement was "No Bonding").
Possible values for the Address_Type parameter:
0 BR/EDR
1 Reserved (not in use)
2 Reserved (not in use)
Public and random LE addresses are not valid and will be rejected.
Currently defined Key_Type values are:
0x00 Combination key
0x01 Local Unit key
0x02 Remote Unit key
0x03 Debug Combination key
0x04 Unauthenticated Combination key from P-192
0x05 Authenticated Combination key from P-192
0x06 Changed Combination key
0x07 Unauthenticated Combination key from P-256
0x08 Authenticated Combination key from P-256
Receiving this event indicates that a pairing procedure has
been completed.
New Long Term Key Event
=======================
Event Code: 0x000A
Controller Index: <controller id>
Event Parameters: Store_Hint (1 Octet)
Key {
Address (6 Octets)
Address_Type (1 Octet)
Key_Type (1 Octet)
Master (1 Octet)
Encryption Size (1 Octet)
Enc. Diversifier (2 Octets)
Random Number (8 Octets)
Value (16 Octets)
}
This event indicates that a new long term key has been generated
for a remote device.
The Store_Hint parameter indicates whether the host is expected
to store the key persistently or not (e.g. this would not be set
if the authentication requirement was "No Bonding").
Possible values for the Address_Type parameter:
0 Reserved (not in use)
1 LE Public
2 LE Random
The provided Address and Address_Type are the identity of
a device. So either its public address or static random address.
For unresolvable random addresses and resolvable random addresses
without identity information and identity resolving key, the
Store_Hint will be set to not store the long term key.
Currently defined Key_Type values are:
0x00 Unauthenticated legacy key
0x01 Authenticated legacy key
0x02 Unauthenticated key from P-256
0x03 Authenticated key from P-256
0x04 Debug key from P-256
Receiving this event indicates that a pairing procedure has
been completed.
Device Connected Event
======================
Event Code: 0x000B
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
Flags (4 Octets)
EIR_Data_Length (2 Octets)
EIR_Data (0-65535 Octets)
This event indicates that a successful baseband connection has
been created to the remote device.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
For devices using resolvable random addresses with a known
identity resolving key, the Address and Address_Type will
contain the identity information.
It is possible that devices get connected via its resolvable
random address and after New Identity Resolving Key event
start using its identity.
The following bits are defined for the Flags parameter:
0 Reserved (not in use)
1 Legacy Pairing
2 Reserved (not in use)
Device Disconnected Event
=========================
Event Code: 0x000C
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
Reason (1 Octet)
This event indicates that the baseband connection was lost to a
remote device.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
For devices using resolvable random addresses with a known
identity resolving key, the Address and Address_Type will
contain the identity information.
Possible values for the Reason parameter:
0 Unspecified
1 Connection timeout
2 Connection terminated by local host
3 Connection terminated by remote host
4 Connection terminated due to authentication failure
Note that the local/remote distinction just determines which side
terminated the low-level connection, regardless of the
disconnection of the higher-level profiles.
This can sometimes be misleading and thus must be used with care.
For example, some hardware combinations would report a locally
initiated disconnection even if the user turned Bluetooth off in
the remote side.
Connect Failed Event
====================
Event Code: 0x000D
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
Status (1 Octet)
This event indicates that a connection attempt failed to a
remote device.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
For devices using resolvable random addresses with a known
identity resolving key, the Address and Address_Type will
contain the identity information.
PIN Code Request Event
======================
Event Code: 0x000E
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
Secure (1 Octet)
This event is used to request a PIN Code reply from user space.
The reply should either be returned using the PIN Code Reply or
the PIN Code Negative Reply command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
Secure: 0x01 secure PIN code required
0x00 secure PIN code not required
User Confirmation Request Event
===============================
Event Code: 0x000F
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
Confirm_Hint (1 Octet)
Value (4 Octets)
This event is used to request a user confirmation request from
user space.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
If the Confirm_Hint parameter value is 0x01 this means that
a simple "Yes/No" confirmation should be presented to the user
instead of a full numerical confirmation (in which case the
parameter value will be 0x00).
User space should respond to this command either using the User
Confirmation Reply or the User Confirmation Negative Reply
command.
User Passkey Request Event
==========================
Event Code: 0x0010
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
This event is used to request a passkey from user space. The
response to this event should either be the User Passkey Reply
command or the User Passkey Negative Reply command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
Authentication Failed Event
===========================
Event Code: 0x0011
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
Status (1 Octet)
This event indicates that there was an authentication failure
with a remote device.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
Device Found Event
==================
Event Code: 0x0012
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
RSSI (1 Octet)
Flags (4 Octets)
EIR_Data_Length (2 Octets)
EIR_Data (0-65535 Octets)
This event indicates that a device was found during device
discovery.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
The following bits are defined for the Flags parameter:
0 Confirm name
1 Legacy Pairing
2 Not Connectable
For the RSSI field a value of 127 indicates that the RSSI is
not available. That can happen with Bluetooth 1.1 and earlier
controllers or with bad radio conditions.
The Confirm name flag indicates that the kernel wants to know
whether user space knows the name for this device or not. If
this flag is set user space should respond to it using the
Confirm Name command.
The Legacy Pairing flag indicates that Legacy Pairing is likely
to occur when pairing with this device. An application could use
this information to optimize the pairing process by locally
pre-generating a PIN code and thereby eliminate the risk of
local input timeout when pairing. Note that there is a risk of
false-positives for this flag so user space should be able to
handle getting something else as a PIN Request when pairing.
The Not Connectable flag indicates that the device will not
accept any connections. This can be indicated by Low Energy
devices that are in broadcaster role.
Discovering Event
=================
Event Code: 0x0013
Controller Index: <controller id>
Event Parameters: Address_Type (1 Octet)
Discovering (1 Octet)
This event indicates that the controller has started discovering
devices. This discovering state can come and go multiple times
between a Start Discovery and a Stop Discovery commands.
The Start Service Discovery command will also trigger this event.
The valid values for the Discovering parameter are 0x01
(enabled) and 0x00 (disabled).
Device Blocked Event
====================
Event Code: 0x0014
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
This event indicates that a device has been blocked using the
Block Device command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
The event will only be sent to Management sockets other than the
one through which the command was sent.
Device Unblocked Event
======================
Event Code: 0x0015
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
This event indicates that a device has been unblocked using the
Unblock Device command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
The event will only be sent to Management sockets other than the
one through which the command was sent.
Device Unpaired Event
=====================
Event Code: 0x0016
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
This event indicates that a device has been unpaired (i.e. all
its keys have been removed from the kernel) using the Unpair
Device command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
For devices using resolvable random addresses with a known
identity resolving key, the event parameters will contain
the identity. After receiving this event, the device will
become essentially private again.
The event will only be sent to Management sockets other than the
one through which the Unpair Device command was sent.
Passkey Notify Event
====================
Event Code: 0x0017
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
Passkey (4 Octets)
Entered (1 Octet)
This event is used to request passkey notification to the user.
Unlike the other authentication events it does not need
responding to using any Management command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
The Passkey parameter indicates the passkey to be shown to the
user whereas the Entered parameter indicates how many characters
the user has entered on the remote side.
New Identity Resolving Key Event
================================
Event Code: 0x0018
Controller Index: <controller id>
Event Parameters: Store_Hint (1 Octet)
Random_Address (6 Octets)
Key {
Address (6 Octets)
Address_Type (1 Octet)
Value (16 Octets)
}
This event indicates that a new identity resolving key has been
generated for a remote device.
The Store_Hint parameter indicates whether the host is expected
to store the key persistently or not.
The Random_Address provides the resolvable random address that
was resolved into an identity. A value of 00:00:00:00:00:00
indicates that the identity resolving key was provided for
a public address or static random address.
Once this event has been send for a resolvable random address,
all further events mapping this device will send out using the
identity address information.
This event also indicates that now the identity address should
be used for commands instead of the resolvable random address.
It is possible that some devices allow discovering via its
identity address, but after pairing using resolvable private
address only. In such a case Store_Hint will be 0x00 and the
Random_Address will indicate 00:00:00:00:00:00. For these devices,
the Privacy Characteristic of the remote GATT database should
be consulted to decide if the identity resolving key must be
stored persistently or not.
Devices using Set Privacy command with the option 0x02 would
be such type of device.
Possible values for the Address_Type parameter:
0 Reserved (not in use)
1 LE Public
2 LE Random
The provided Address and Address_Type are the identity of
a device. So either its public address or static random address.
New Signature Resolving Key Event
=================================
Event Code: 0x0019
Controller Index: <controller id>
Event Parameters: Store_Hint (1 Octet)
Key {
Address (6 Octets)
Address_Type (1 Octet)
Type (1 Octet)
Value (16 Octets)
}
This event indicates that a new signature resolving key has been
generated for either the master or slave device.
The Store_Hint parameter indicates whether the host is expected
to store the key persistently or not.
The Type parameter has the following possible values:
0x00 Unauthenticated local CSRK
0x01 Unauthenticated remote CSRK
0x02 Authenticated local CSRK
0x03 Authenticated remote CSRK
The local keys are used for signing data to be sent to the
remote device, whereas the remote keys are used to verify
signatures received from the remote device.
The local signature resolving key will be generated with each
pairing request. Only after receiving this event with the Type
indicating a local key is it possible to use ATT Signed Write
procedures.
Possible values for the Address_Type parameter:
0 Reserved (not in use)
1 LE Public
2 LE Random
The provided Address and Address_Type are the identity of
a device. So either its public address or static random address.
Device Added Event
==================
Event Code: 0x001a
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
Action (1 Octet)
This event indicates that a device has been added using the
Add Device command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
The event will only be sent to management sockets other than the
one through which the command was sent.
Device Removed Event
====================
Event Code: 0x001b
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
Address_Type (1 Octet)
This event indicates that a device has been removed using the
Remove Device command.
Possible values for the Address_Type parameter:
0 BR/EDR
1 LE Public
2 LE Random
The event will only be sent to management sockets other than the
one through which the command was sent.
New Connection Parameter Event
==============================
Event Code: 0x001c
Controller Index: <controller id>
Event Parameters: Store_Hint (1 Octet)
Param {
Address (6 Octets)
Address_Type (1 Octet)
Min_Connection_Interval (2 Octets)
Max_Connection_Interval (2 Octets)
Connection_Latency (2 Octets)
Supervision_Timeout (2 Octets)
}
This event indicates a new set of connection parameters from
a peripheral device.
The Store_Hint parameter indicates whether the host is expected
to store this information persistently or not.
Possible values for the Address_Type parameter:
0 Reserved (not in use)
1 LE Public
2 LE Random
The Min_Connection_Interval, Max_Connection_Interval,
Connection_Latency and Supervision_Timeout parameters are
encoded as described in Core 4.1 spec, Vol 2, 7.7.65.3.
Unconfigured Index Added Event
==============================
Event Code: 0x001d
Controller Index: <controller id>
Event Parameters:
This event indicates that a new unconfigured controller has been
added to the system. It is usually followed by a Read Controller
Configuration Information command.
Only when a controller requires further configuration, it will
be announced with this event. If it supports configuration, but
does not require it, then an Index Added event will be used.
Once the Read Extended Controller Index List command has been
used at least once, the Extended Index Added event will be
send instead of this one.
Unconfigured Index Removed Event
================================
Event Code: 0x001e
Controller Index: <controller id>
Event Parameters:
This event indicates that an unconfigured controller has been
removed from the system.
Once the Read Extended Controller Index List command has been
used at least once, the Extended Index Removed event will be
send instead of this one.
New Configuration Options Event
===============================
Event Code: 0x001f
Controller Index: <controller id>
Event Parameters: Missing_Options (4 Octets)
This event indicates that one or more of the options for the
controller configuration has changed.
Extended Index Added Event
==========================
Event Code: 0x0020
Controller Index: <controller id>
Event Parameters: Controller_Type (1 Octet)
Controller_Bus (1 Octet)
This event indicates that a new controller index has been
added to the system.
This event will only be used after Read Extended Controller Index
List has been used at least once. If it has not been used, then
Index Added and Unconfigured Index Added are sent instead.
Extended Index Removed Event
============================
Event Code: 0x0021
Controller Index: <controller id>
Event Parameters: Controller_Type (1 Octet)
Controller_Bus (1 Octet)
This event indicates that an existing controller index has been
removed from the system.
This event will only be used after Read Extended Controller Index
List has been used at least once. If it has not been used, then
Index Removed and Unconfigured Index Removed are sent instead.
Local Out Of Band Extended Data Updated Event
=============================================
Event Code: 0x0022
Controller Index: <controller id>
Event Parameters: Address_Type (1 Octet)
EIR_Data_Length (2 Octets)
EIR_Data (0-65535 Octets)
This event is used when the Read Local Out Of Band Extended Data
command has been used and some other user requested a new set
of local out-of-band data. This allows for the original caller
to adjust the data.
Possible values for the Address_Type parameter are a bit-wise or
of the following bits:
0 BR/EDR
1 LE Public
2 LE Random
By combining these e.g. the following values are possible:
1 BR/EDR
6 LE (public & random)
7 Reserved (not in use)
The value for EIR_Data_Length and content for EIR_Data is the
same as described in Read Local Out Of Band Extended Data command.
When LE Privacy is used and LE Secure Connections out-of-band
data has been requested, then this event will be emitted every
time the Resolvable Private Address (RPA) gets changed. The new
RPA will be included in the EIR_Data.
The event will only be sent to management sockets other than the
one through which the command was sent. It will additionally also
only be sent to sockets that have used the command at least once.
Advertising Added Event
=======================
Event Code: 0x0023
Controller Index: <controller id>
Event Parameters: Instance (1 Octet)
This event indicates that an advertising instance has been added
using the Add Advertising command.
The event will only be sent to management sockets other than the
one through which the command was sent.
Advertising Removed Event
=========================
Event Code: 0x0024
Controller Index: <controller id>
Event Parameters: Instance (1 Octet)
This event indicates that an advertising instance has been removed
using the Remove Advertising command.
The event will only be sent to management sockets other than the
one through which the command was sent.
Extended Controller Information Changed Event
=============================================
Event Code: 0x0025
Controller Index: <controller id>
Event Parameters: EIR_Data_Length (2 Octets)
EIR_Data (0-65535 Octets)
This event indicates that controller information has been updated
and new values are used. This includes the local name, class of
device, device id and LE address information.
This event will only be used after Read Extended Controller
Information command has been used at least once. If it has not
been used the legacy events are used.
The event will only be sent to management sockets other than the
one through which the change was triggered.
PHY Configuration Changed Event
===============================
Event Code: 0x0026
Controller Index: <controller id>
Event Parameters: Selected_PHYs (4 Octets)
This event indicates that default PHYs have been updated.
This event will only be used after Set PHY Configuration
command has been used at least once.
The event will only be sent to management sockets other than the
one through which the change was triggered.
Refer Get PHY Configuration command for PHYs parameter.