mgmt - Man Page

Bluetooth Management Protocol documentation

Synopsis

The Bluetooth management sockets can be created by setting the hci_channel member of struct sockaddr_hci to HCI_CHANNEL_CONTROL (see hci(7)) when creating a raw HCI socket:

 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).

Description

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:

Version	Kernel Version	Commands	Events
1.1	3.4	Set Device ID
1.2	3.7		Passkey Notify
1.3	3.9
1.4	3.13	Set Advertising
		Set BR/EDR
		Set Static Address
		Set Scan Parameters
1.5	3.15	Set Secure Connections	New Identity Resolving Key
		Set Debug Keys	New Signature Resolving Key
		Set Privacy
		Load Identity Resolving Keys
1.6	3.16	Get Connection Information
1.7	3.17	Get Clock Information
		Add Device	Device Added
		Remove Device	Device Removed
		Load Connection Parameters	New Connection Parameter
		Read Unconfigured Index List	Unconfigured Index Added
		Read Controller Configuration Information	Unconfigured Index Removed
		Set External Configuration	New Configuration Options
		Set Public Address commands
1.8	3.19	Start Service Discovery
1.9	4.1	Read Local Out Of Band Extended Data	Extended Index Added
		Read Extended Controller Index List	Extended Index Removed
		Read Advertising Features	Local Out Of Band Extended Data Updated
		Add Advertising	Advertising Added
		Remove Advertising	Advertising Removed
1.10	4.2
1.11	4.5	Get Advertising Size Information
		Start Limited Discovery
1.12	4.6
1.13	4.8
1.14	4.9	Read Extended Controller Information	Extended Controller Information Changed
		Set Appearance
1.15	5.5	Get PHY Configuration	PHY Configuration Changed
		Set PHY Configuration
		Load Blocked Keys
1.16	5.6	Set Wideband Speech
1.17	5.7	Read Controller Capabilities	Experimental Feature Changed
		Read Experimental Features Information
		Set Experimental Feature
1.18	5.8	Read Default System Configuration	Default System Configuration Changed
		Set Default System Configuration	Default Runtime Configuration Changed
		Read Default Runtime Configuration	Default Runtime Configuration Changed
		Set Default Runtime Configuration	Device Flags Changed
		Get Device Flags	Advertisement Monitor Added
		Set Device Flags	Advertisement Monitor Removed
		Read Advertisement Monitor Features	Controller Suspend
		Add Advertisement Patterns Monitor	Controller Resume
		Remove Advertisement Monitor	Advertisement Monitor Device Found
			Advertisement Monitor Device Lost
1.19	5.10	Add Extended Advertising Parameters
		Add Extended Advertising Data
1.20	5.11	Add Advertisement Patterns Monitor With RSSI Threshold
1.21	6.0	Set Mesh Receiver	Mesh Device Found
		Read Mesh Features	Mesh Packet Transmit Complete
		Transmit Mesh Packet
		Cancel Transmit Mesh Packet

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:

Value	Description
0x0000-0xFFFE	<controller id>
0xFFFF	<non-controller>

Error Codes

The following values have been defined for use with the Command Status and Command Complete events:

Value	Description
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.

Commands

Read Management Version Information

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 Code: 0x0002
Controller Index: <non-controller>
Command Parameters
Return Parameters: Num_Of_Commands (2 Octets)
...: Num_Of_Events (2 Octets)
...: Command[] (2 Octets)
...: ...[]
...: Event[] (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 Code: 0x0003
Controller Index: <non-controller>
Command Parameters
Return Parameters: Num_Controllers (2 Octets)
...: Controller_Index[] (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 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:

Bit	Description
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
16	PHY Configuration
17	Wideband Speech
18	Connected Isochronous Stream - Central
19	Connected Isochronous Stream - Peripheral
20	Isochronous Broadcaster
21	Synchronized Receiver
22	LL Privacy

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 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 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:

Value	Description
0x00	Not Discoverable
0x01	General Discoverable
0x02 (since 1.4)	Limited Discoverable

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.

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 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 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 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 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 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 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 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 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 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 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

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:

Value	Description
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:

Value	Description
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 Code: 0x0013
Controller Index: <controller id>
Command Parameters: Key_Count (2 Octets)
...: Address[] (6 Octets)
...: Address_Type[] (1 Octet)
...: Key_Type[] (1 Octet)
...: Central[] (1 Octet)
...: Encryption_Size[] (1 Octet)
...: Encryption_Diversifier[] (2 Octets)
...: Random_Number[] (8 Octets)
...: Value[] (16 Octets)
...: ...[]

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:

Value	Description
0x00	Reserved (not in use)
0x01	LE Public
0x02	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:

Value	Description
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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 Code: 0x0015
Controller Index: <controller id>
Command Parameters
Return Parameters: Connection_Count (2 Octets)
...: Address[] (6 Octets)
...: Address_Type[] (1 Octet)
...: ...[]

This command is used to retrieve a list of currently connected devices.

Possible values for the Address_Type parameter:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	DisplayOnly
0x01	DisplayYesNo
0x02	KeyboardOnly
0x03	NoInputNoOutput
0x04	KeyboardDisplay

Passing a value 0x04 (KeyboardDisplay) will cause the kernel to convert it to 0x01 (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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

Possible values for the IO_Capability parameter:

Value	Description
0x00	DisplayOnly
0x01	DisplayYesNo
0x02	KeyboardOnly
0x03	NoInputNoOutput
0x04	KeyboardDisplay

Passing a value 0x04 (KeyboardDisplay) will cause the kernel to convert it to 0x01 (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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
widths auto
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Bit	Description
0	BR/EDR
1	LE Public
2	LE Random

By combining these e.g. the following values are possible:

Value	Description
0x01	BR/EDR
0x06	LE (public & random)
0x07	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 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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
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 (since 1.4)

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:

Value	Description
0x00	Disable advertising
0x01	Enables advertising
0x02 (since 1.9)	Enabled 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 (since 1.4)

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 (since 1.4)

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 (since 1.4)

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 (since 1.5)

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 (since 1.5)

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:

Value	Description
0x00	Discard keys on disconnect
0x01	Discard keys on reboot
0x02 (since 1.7)	Discard keys on reboot (SSP debug mode)

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 (since 1.5)

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 (since 1.5)

Command Code: 0x0030
Controller Index: <controller id>
Command Parameters: Key_Count (2 Octets)
...: Address[] (6 Octets)
...: Address_Type[] (1 Octet)
...: Value[] (16 Octets)
...: ...[]

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:

Value	Description
0x00	Reserved (not in use)
0x01	LE Public
0x02	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 (since 1.6)

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:

Value	Description
0x00	Reserved (not in use)
0x01	LE Public
0x02	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 (since 1.7)

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:

Value	Description
0x00	BR/EDR
0x01	Reserved (not in use)
0x02	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.

Possible errors:

Not Connected

Not Powered

Invalid Parameters

Invalid Index

Add Device (since 1.7)

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

Possible values for the Action parameter:

Value	Description
0x00	Background scan for device
0x01	Allow incoming connection
0x02	Auto-connect remote device

With the Action 0x00, 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 0x01, 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 (since 1.7)

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 (since 1.7)

Command Code: 0x0035
Controller Index: <controller id>
Command Parameters: Param_Count (2 Octets)
...: 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)
...: ...[]

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 (since 1.7)

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 (since 1.7)

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:

Bit	Description
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 (since 1.7)

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 (since 1.7)

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 (since 1.8)

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:

Bit	Description
0	BR/EDR
1	LE Public
2	LE Random

By combining these e.g. the following values are possible:

Value	Description
0x01	BR/EDR
0x06	LE (public & random)
0x07	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 (since 1.9)

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:

Bit	Description
0	BR/EDR
1	LE Public
2	LE Random

By combining these e.g. the following values are possible:

Value	Description
0x01	BR/EDR
0x06	LE (public & random)
0x07	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 (since 1.9)

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 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:

Value	Description
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:

Value	Description
0x00	Virtual
0x01	USB
0x02	PCMCIA
0x03	UART
0x04	RS232
0x05	PCI
0x06	SDIO
0x07	SPI
0x08	I2C
0x09	SMD
0x0A	VIRTIO
0x0B	IPC

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 (since 1.9)

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[] (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:

Bit	Description
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 (since 1.14)	Add Appearance field to Scan_Rsp
6 (since 1.14)	Add Local Name in Scan_Rsp
7 (since 1.15)	Secondary Channel with LE 1M
8 (since 1.15)	Secondary Channel with LE 2M
9 (since 1.15)	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 (since 1.9)

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:

Bit	Description
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 (since 1.14)	Add Appearance field to Scan_Rsp
6 (since 1.14)	Add Local Name in Scan_Rsp
7 (since 1.15)	Secondary Channel with LE 1M
8 (since 1.15)	Secondary Channel with LE 2M
9 (since 1.15)	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 (since 1.9)

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 (since 1.11)

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:

Value	Description
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 (since 1.11)

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:

Bit	Description
0	BR/EDR
1	LE Public
2	LE Random

By combining these e.g. the following values are possible:

Value	Description
0x01	BR/EDR
0x06	LE (public & random)
0x07	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 (since 1.14)

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)

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:

Bit	Description
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
16	PHY Configuration
17	Wideband Speech
18	Connected Isochronous Stream - Central
19	Connected Isochronous Stream - Peripheral

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 (since 1.14)

Command Code: 0x0043
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 (since 1.15)

Command Code: 0x0044
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:

Bit	Description
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	ERDR 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 (since 1.15)

Command Code: 0x0045
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

Load Blocked Keys (since 1.15)

Command Code: 0x0046
Controller Index: <controller id>
Command Parameters: Key_Count (2 Octets)
...: Key_Type[] (1 Octet)
...: Value[] (16 Octets)
...: ...[]

Return Parameters

This command is used to feed the kernel a list of keys that are known to be vulnerable.

If the pairing procedure produces any of these keys, they will be silently dropped and any attempt to enable encryption rejected.

Currently defined Key_Type values are:

Value	Description
0x00	Link Key (BR/EDR)
0x01	Long Term Key (LE)
0x02	Identity Resolving Key (LE)

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

Set Wideband Speech (since 1.16)

Command Code: 0x0047
Controller Index: <controller id>
Command Parameters: Wideband_Speech (1 Octet)
Return Parameters: Current_Settings (4 Octets)

This command is used to enable/disable Wideband Speech support for a controller. The allowed values for the Wideband_Speech command parameter are 0x00 and 0x01. All other values will return Invalid Parameters.

The value 0x00 disables Wideband Speech, the value 0x01 enables Wideband Speech.

This command is only available for BR/EDR capable controllers and require controller specific support.

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 Wideband Speech 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

Read Controller Capabilities (since 1.17)

Command Code: 0x0048
Controller Index: <controller id>
Command Parameters
Return Parameters: Capabilities_Data_Length (2 Octets)
...: Capabilities_Data[] (0-65535 Octets)

This command is used to retrieve the supported capabilities by the controller or the host stack.

The Capabilities_Data_Length and Capabilities_Data parameters provide a list of security settings, features and information. It uses the same format as EIR_Data, but with the namespace defined here.

Data Type	Name
0x01	Flags
0x02	Max Encryption Key Size (BR/EDR)
0x03	Max Encryption Key Size (LE)
0x04	Supported Tx Power (LE)

Flags (data type 0x01)

Bit	Description
0	Remote public key validation (BR/EDR)
1	Remote public key validation (LE)
2	Encryption key size enforcement (BR/EDR)
3	Encryption key size enforcement (LE)

Max Encryption Key Size (data types 0x02 and 0x03)

When the field is present, then it provides 1 Octet value indicating the max encryption key size. If the field is not present, then it is unknown what the max encryption key size of the controller or host is in use.

Supported LE Tx Power (data type 0x04)

When present, this 2-octet field provides the min and max LE Tx power supported by the controller, respectively, as reported by the LE Read Transmit Power HCI command. If this field is not available, it indicates that the LE Read Transmit Power HCI command was not available.

This command generates a Command Complete event on success or a Command Status event on failure.

Possible errors:

Invalid Parameters

Invalid Index

Read Experimental Features Information (since 1.17)

Command Code: 0x0049
Controller Index: <controller id> or <non-controller>
Command Parameters
Return Parameters: Feature_Count (2 Octets)
...: UUID[] (16 Octets)
...: Flags[] (4 Octets)
...: ...[]

This command is used to retrieve the supported experimental features by the host stack.

The UUID values are not defined here. They can change over time and are on purpose not stable. Features that mature will be removed at some point. The mapping of feature UUID to the actual functionality of a given feature is out of scope here.

The following bits are defined for the Flags parameter:

Bit	Description
0	Feature active
1	Causes change in supported settings

This command generates a Command Complete event on success or a Command Status event on failure.

Possible errors:

Invalid Parameters

Invalid Index

Set Experimental Feature (since 1.17)

Command Code: 0x004a
Controller Index: <controller id> or <non-controller>
Command Parameters: UUID (16 Octets)
...: Action (1 Octet)
Return Parameters: UUID (16 Octets)
...: Flags (4 Octets)

This command is used to change the setting of an experimental feature of the host stack.

The UUID value must be a supported value returned from the Read Experimental Features Information command.

The Action parameter is UUID specific, but in most cases it will be just a simple on/off toggle with these values:

Bit	Description
0x00	Disable feature
0x01	Enable feature

It depends on the feature if the command can be used when the controller is powered up. See Flags parameter of Read Experimental Features Information command for details if the controller has to be powered down first.

The following bits are defined for the Flags return parameter:

Bit	Description
0	Feature active
1	Supported settings changed

When a feature causes the change of supported settings, then it is a good idea to re-read the controller information.

When the UUID parameter is an empty UUID (16 x 0x00), then all experimental features will be deactivated.

This command generates a Command Complete event on success or a Command Status event on failure.

Possible errors:

Invalid Parameters

Not Powered

Invalid Index

Read Default System Configuration (since 1.18)

Command Code: 0x004b
Controller Index: <controller id>
Command Parameters
Return Parameters: Parameter_Type[] (2 Octet)
...: Value_Length[] (1 Octet)
...: Value (0-255[] Octets)
...: ...[]

This command is used to read a list of default controller parameters.

Currently defined Parameter_Type values are:

Value	Description
0x0000	BR/EDR Page Scan Type
0x0001	BR/EDR Page Scan Interval
0x0002	BR/EDR Page Scan Window
0x0003	BR/EDR Inquiry Scan Type
0x0004	BR/EDR Inquiry Scan Interval
0x0005	BR/EDR Inquiry Scan Window
0x0006	BR/EDR Link Supervision Timeout
0x0007	BR/EDR Page Timeout
0x0008	BR/EDR Min Sniff Interval
0x0009	BR/EDR Max Sniff Interval
0x000a	LE Advertisement Min Interval
0x000b	LE Advertisement Max Interval
0x000c	LE Multi Advertisement Rotation Interval
0x000d	LE Scanning Interval for auto connect
0x000e	LE Scanning Window for auto connect
0x000f	LE Scanning Interval for wake scenarios
0x0010	LE Scanning Window for wake scenarios
0x0011	LE Scanning Interval for discovery
0x0012	LE Scanning Window for discovery
0x0013	LE Scanning Interval for adv monitoring
0x0014	LE Scanning Window for adv monitoring
0x0015	LE Scanning Interval for connect
0x0016	LE Scanning Window for connect
0x0017	LE Min Connection Interval
0x0018	LE Max Connection Interval
0x0019	LE Connection Latency
0x001a	LE Connection Supervision Timeout
0x001b	LE Autoconnect Timeout

This command can be used at any time and will return a list of supported default parameters as well as their current value.

This command generates a Command Complete event on success or a Command Status event on failure.

Possible errors:

Invalid Parameters

Invalid Index

Set Default System Configuration (since 1.18)

Command Code: 0x004c
Controller Index: <controller id>
Command Parameters: Parameter_Type[] (2 Octet)
...: Value_Length[] (1 Octet)
...: Value[] (0-255 Octets)
...: ...[]

Return Parameters

This command is used to set a list of default controller parameters.

See Read Default System Configuration command for list of supported Parameter_Type values.

This command can be used when the controller is not powered and all supported parameters will be programmed once powered.

When providing unsupported values or invalid values, no parameter value will be changed and all values discarded.

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

Read Default Runtime Configuration (since 1.18)

Command Code: 0x004d
Controller Index: <controller id>
Command Parameters
Return Parameters: Parameter_Type[] (2 Octet)
...: Value_Length[] (1 Octet)
...: Value[] (0-255 Octets)
...: ...[]

This command is used to read a list of default runtime parameters.

Currently no Parameter_Type values are defined and an empty list will be returned.

This command can be used at any time and will return a list of supported default parameters as well as their current value.

This command generates a Command Complete event on success or a Command Status event on failure.

Possible errors:

Invalid Parameters

Invalid Index

Set Default Runtime Configuration (since 1.18)

Command Code: 0x004e
Controller Index: <controller id>
Command Parameters: Parameter_Type[] (2 Octet)
...: Value_Length[] (1 Octet)
...: Value[] (0-255 Octets)
...: ...[]

Return Parameters

This command is used to set a list of default runtime parameters.

See Read Default Runtime Configuration command for list of supported Parameter_Type values.

This command can be used at any time and will change the runtime default. Changes however will not apply to existing connections or currently active operations.

When providing unsupported values or invalid values, no parameter value will be changed and all values discarded.

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

Get Device Flags (since 1.18)

Command Code: 0x004f
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
...: Address_Type (1 Octet)
Return Parameters: Address (6 Octets)
...: Address_Type (1 Octet)
...: Supported_Flags (4 Octets)
...: Current_Flags (4 Octets)

This command is used to retrieve additional flags and settings for devices that are added via Add Device command.

Possible values for the Address_Type parameter:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

The Flags parameters are a bitmask with currently the following available bits:

Bit	Description
0	Remote Wakeup enabled
1	Device Privacy Mode enabled
2	Address Resolution enabled

This command generates a Command Complete event on success or a Command Status event on failure.

Possible errors:

Invalid Parameters

Invalid Index

Set Device Flags (since 1.18)

Command Code: 0x0050
Controller Index: <controller id>
Command Parameters: Address (6 Octets)
...: Address_Type (1 Octet)
...: Current_Flags (4 Octets)
Return Parameters: Address (6 Octets)
...: Address_Type (1 Octet)

This command is used to configure additional flags and settings for devices that are added via Add Device command.

Possible values for the Address_Type parameter:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

The list of supported Flags can be retrieved via the Get Device Flags or Device Flags Changed command. Selecting unsupported flags will result in an Invalid Parameter error;

Refer to the Get Device Flags command for a detailed description of the Flags parameters.

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

Read Advertisement Monitor Features (since 1.18)

Command Code: 0x0051
Controller Index: <controller id>
Command Parameters
Return Parameters: Supported_Features (4 Octets)
...: Enabled_Features (4 Octets)
...: Max_Num_Handles (2 Octets)
...: Max_Num_Patterns (1 Octet)
...: Num_Handles (2 Octets)
...: Handle[] (2 Octets)
...: ...[]

This command is used to read the advertisement monitor features supported by the controller and stack. Supported_Features lists all related features supported by the controller while Enabled_Features lists the ones currently used by the kernel.

Supported_Features and Enabled_Features are bitmasks with currently the following available bits:

Bit	Description
0	Advertisement content monitoring based on patterns with logic OR.

Max_Num_Handles indicates the maximum number of supported advertisement monitors. Note that the actual number of supported ones might be less depending on the limitation of the controller.

Max_Num_Pattern indicates the maximum number of supported patterns in an advertisement patterns monitor. Note that the actual number of supported ones might be less depending on the limitation of the controller.

Num_Handles indicates the number of added advertisement monitors, and it is followed by a list of handles.

This command can be used when the controller is not powered.

Add Advertisement Patterns Monitor (since 1.18)

Command Code: 0x0052
Controller Index: <controller id>
Command Parameters: Pattern_Count (1 Octet)
...: AD_Type[] (1 Octet)
...: Offset[] (1 Octet)
...: Length[] (1 Octet)
...: Value[] (31 Octets)
...: ...[]
Return Parameters: Monitor_Handle (2 Octets)

This command is used to add an advertisement monitor whose filtering conditions are patterns. The kernel will trigger scanning if there is at least one monitor added. If the controller supports advertisement filtering, the kernel would offload the content filtering to the controller in order to reduce power consumption; otherwise the kernel ignores the content of the monitor. Note that if the there are more than one patterns, OR logic would applied among patterns during filtering. In other words, any advertisement matching at least one pattern in a given monitor would be considered as a match.

A pattern contains the following fields:

AD_Data_Type: Advertising Data Type. The possible values are defined in Core
...: Specification Supplement.
Offset: The start index where pattern matching shall be performed with
...: in the AD data.
Length: The length of the pattern value in bytes.
Value: The value of the pattern in bytes.

Here is an example of a pattern.

{
        0x16, // Service Data - 16-bit UUID
        0x02, // Skip the UUID part.
        0x04, // Length of the value
        {0x11, 0x22, 0x33, 0x44},
}

This command can be used when the controller is not powered and all settings will be programmed once powered.

Possible errors:

Failed

Busy

No Resources

Invalid Parameters

Remove Advertisement Monitor (since 1.18)

Command Code: 0x0053
Controller Index: <controller id>
Command Parameters: Monitor_Handle (2 Octets)
Return Parameters: Monitor_Handle (2 Octets)

This command is used to remove advertisement monitor(s). The kernel would remove the monitor(s) with Monitor_Handle and update the LE scanning.

When the Monitor_Handle is set to zero, then all previously added handles will be removed.

Removing a monitor while it is being added will be ignored.

This command can be used when the controller is not powered and all settings will be programmed once powered.

Possible errors:

Failed

Busy

Add Extended Advertising Parameters (since 1.19)

Command Code: 0x0054
Controller Index: <controller id>
Command Parameters: Instance (1 Octet)
...: Flags (4 Octets)
...: Duration (2 Octets)
...: Timeout (2 Octets)
...: MinInterval (4 Octets)
...: MaxInterval (4 Octets)
...: TxPower (1 Octet)
Return Parameters: Instance (1 Octet)
...: TxPower (1 Octet)
...: MaxAdvDataLen (1 Octet)
...: MaxScanRspLen (1 Octet)

This command is used to configure the parameters for Bluetooth Low Energy advertising instance. This command is expected to be followed by an Add Extended Advertising Data command to complete and enable the advertising instance.

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:

Bit	Description
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
10	Indicate tx power can be specified
11	Indicate HW supports the advertising offload
12	The Duration parameter should be used
13	The Timeout parameter should be used
14	The Interval parameters should be used
15	The Tx Power parameter should be used
16	The advertisement will contain a scan response

To allow future parameters to be optionally extended in this structure, the flags member has been used to specify which of the structure fields were purposefully set by the caller. Unspecified parameters will be given sensible defaults by the kernel before the advertisement is registered.

The Duration parameter configures the length of an Instance. The value is in seconds. The default is 2 seconds.

MinInterval and MaxInterval define the minimum and maximum advertising intervals, with units as number of .625ms advertising slots. The Max interval is expected to be greater than or equal to the Min interval, and both must have values in the range [0x000020, 0xFFFFFF]. If either condition is not met, the registration will fail.

The provided Tx Power parameter will only be used if the controller supports it, which can be determined by the presence of the CanSetTxPower member of the Read Advertising Features command.

The acceptable range for requested Tx Power is defined in the spec (Version 5.2 | Vol 4, Part E, page 2585) to be [-127, +20] dBm, and the controller will select a power value up to the requested one. The transmission power selected by the controller is not guaranteed to match the requested one, so the reply will contain the power chosen by the controller. If the requested Tx Power is outside the valid range, the registration will fail.

When flag bit 16 is enabled, it indicates that the subsequent request to set advertising data will contain a scan response, and that the parameters should set a PDU type that is scannable.

Re-adding an already existing instance (i.e. issuing the Add Extended Advertising Parameters command with an Instance identifier of an existing instance) will update that instance's configuration. In this case where no new instance is added, no Advertising Added event will be generated. However, if the update of the instance fails, the instance will be removed, and an Advertising Removed event will be generated.

The MaxAdvDataLen return parameter indicates how large the data payload can be in the subsequent Add Extended Advertising Data Command, as it accounts for the data required for the selected flags. Similarly, the MaxScanRspLen return parameter indicates how large the scan response can be.

LE must already be enabled, and the controller must be powered, otherwise a "rejected" status will be returned.

This command generates a Command Complete event on success or a Command Status event on failure.

Possible errors:

Failed

Rejected

Not Supported

Invalid Parameters

Busy

Add Extended Advertising Data (since 1.19)

Command Code: 0x0055
Controller Index: <controller id>
Command Parameters: Instance (1 Octet)
...: Advertising Data Length (1 Octet)
...: Scan Response Length (1 Octet)
...: Advertising Data (0-255 Octets)
...: Scan Response (0-255 Octets)
Return Parameters: Instance (1 Octet)

The Add Extended Advertising Data command is used to update the advertising data of an existing advertising instance known to the kernel. It is expected to be called after an Add Extended Advertising Parameters command, as part of the advertisement registration process.

If extended advertising is available, this call will initiate HCI commands to set the instance's advertising data, set scan response data, and then enable the instance. If extended advertising is unavailable, the advertising instance structure maintained in kernel will have its advertising data and scan response updated, and the instance will either be scheduled immediately or left in the queue for later advertisement as part of round-robin advertisement rotation in software.

If Scan_Rsp_Len is zero and the flags defined in Add Extended Advertising Parameters command do not have connectable flag 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.

If the Instance provided does not match a known instance, or if the provided advertising data or scan response are in an unrecognized format, an "Invalid Parameters" status will be returned.

If a "Set LE" or Advertising command is still in progress, a "Busy" status will be returned.

If the controller is not powered, a "rejected" status will be returned.

This command generates a Command Complete event on success or a Command Status event on failure.

Possible errors:

Failed

Rejected

Invalid Parameters

Busy

Add Advertisement Patterns Monitor With RSSI Threshold (since 1.20)

Command Code: 0x0056
Controller Index: <controller id>
Command Parameters: High_Threshold (1 Octet)
...: High_Threshold_Timer (2 Octets)
...: Low_Threshold (1 Octet)
...: Low_Threshold_Timer (2 Octets)
...: Sampling_Period (1 Octet)
...: Pattern_Count (1 Octet)
...: AD_Type[] (1 Octet)
...: Offset[] (1 Octet)
...: Length[] (1 Octet)
...: Value[] (31 Octets)
...: ...[]
Return Parameters: Monitor_Handle (2 Octets)

This command is essentially the same as Add Advertisement Patterns Monitor Command (0x0052), but with an additional RSSI parameters. As such, if the kernel supports advertisement filtering, then the advertisement data will be filtered in accordance with the set RSSI parameters. Otherwise, it would behave exactly the same as the Add Advertisement Patterns Monitor Command.

Devices would be considered "in-range" if the RSSI of the received adv packets are greater than High_Threshold dBm for High_Threshold_Timer seconds. Similarly, devices would be considered lost if no received adv have RSSI greater than Low_Threshold dBm for Low_Threshold_Timer seconds. Only adv packets of "in-range" device would be propagated.

The meaning of Sampling_Period is as follows:

0x00: All adv packets from "in-range" devices would be propagated.
0xFF: Only the first adv data of "in-range" devices would be
...: propagated. If the device becomes lost, then the first data when
...: it is found again will also be propagated.
other: Advertisement data would be grouped into 100ms * N time period. Data in the same group will only be reported once, with the RSSI value being averaged out.

Possible errors:

Failed

Busy

No Resources

Invalid Parameters

Set Mesh Receiver (since 1.21)

Command Code: 0x0057
Controller Index: <controller id>
Command Parameters: Enable (1 Octets)
...: Window (2 Octets)
...: Period (2 Octets)
...: Num AD Types (1 Octets)
...: AD Types[]

This command Enables or Disables Mesh Receiving. When enabled passive scanning remains enabled for this controller.

The Window/Period values are used to set the Scan Parameters when no other scanning is being done.

Num AD Types and AD Types parameter, filter Advertising and Scan responses by AD type. Reponses that do not contain at least one of the requested AD types will be ignored. Otherwise they will be delivered with the Mesh Device Found event.

Possible errors:

Failed

No Resources

Invalid Parameters

Read Mesh Features (since 1.21)

Command Code: 0x0058
Controller Index: <controller id>
Command Parameters
Return Parameters: Index (2 Octets)
...: Max Handles (1 Octets)
...: Used Handles (1 Octets)
...: Handle[]

This command is used to both verify that Outbound Mesh packet support is enabled, and to indicate the number of packets that can and are simultaneously queued.

Index identifies the HCI Controller that this information is valid for.

Max Handles indicates the maximum number of packets that may be queued.

Used Handles indicates the number of packets awaiting transmission.

Handle is an array of the currently outstanding packets.

Possible errors:

Failed

No Resources

Invalid Parameters

Transmit Mesh Packet (since 1.21)

Command Code: 0x0059
Controller Index: <controller id>
Command Parameters: Addr (6 octets)
...: Addr Type (1 Octets)
...: Instant (8 Octets)
...: Delay (2 Octets)
...: Count (1 Octets)
...: Data Length (1 Octets)
...: Data[] (variable)
Return Parameters: Handle (1 Octets)

This command sends a Mesh Packet as a NONCONN LE Advertisement.

The Addr + Addr Type parameters specifify the address to use in the outbound advertising packet. If BD_ADDR_ANY and LE_RANDOM is set, the kernel will create a single use non-resolvable address.

The Instant parameter is used in combination with the Delay parameter, to finely time the sending of the Advertising packet. It should be set to the Instant value tag of a received incoming Mesh Device Found Event. It is only useful in POLL-RESPONSE situations where a response must be sent within a negotiated time window. The value of the Instant parameter should not be interpreted by the host, and only has meaning to the controller.

The Delay parameter, if 0x0000, will cause the packet to be sent at the earliest opportunity. If non-Zero, and the controller supports delayed delivery, the Instant and Delay parameters will be used to delay the outbound packet. While the Instant is not defined, the Delay is specified in milliseconds.

The Count parameter must be sent to a non-Zero value indicating the number of times this packet will be sent before transmission completes. If the Delay parameter is non-Zero, then Count must be 1 only.

The Data parameter is an octet array of the AD Type and Mesh Packet.

This command will return immediately, and if it succeeds, will generate a Mesh Packet Transmission Complete event when after the packet has been sent.

Possible errors:

Failed

Busy

No Resources

Invalid Parameters

Cancel Transmit Mesh Packet (since 1.21)

Command Code: 0x005A
Controller Index: <controller id>
Command Parameters: Handle (1 Octets)

This command may be used to cancel an outbound transmission request.

The Handle parameter is the returned handle from a successful Transmit Mesh Packet request. If Zero is specified as the handle, all outstanding send requests are canceled.

For each mesh packet canceled, the Mesh Packet Transmission Complete event will be generated, regardless of whether the packet was sent successfully.

Possible errors:

Failed

Invalid Parameters

Send HCI command and wait for event

Command Code: 0x005B
Controller Index: <controller id>
Command Parameters: Opcode (2 Octets)
...: Event (1 Octet)
...: Timeout (1 Octet)
...: Parameter Length (2 Octets)
...: Parameter[] (variable)
Return Parameters: Response (1-variable Octets)

This command may be used to send a HCI command and wait for an (optional) event.

The HCI command is specified by the Opcode, any arbitrary is supported including vendor commands, but contrary to the like of Raw/User channel it is run as an HCI command send by the kernel since it uses its command synchronization thus it is possible to wait for a specific event as a response.

Setting event to 0x00 will cause the command to wait for either HCI Command Status or HCI Command Complete.

Timeout is specified in seconds, setting it to 0 will cause the default timeout to be used.

Possible errors:

Failed

Invalid Parameters

Events

Command Complete

Event Code: 0x0001
Controller Index: <controller id> or <non-controller>
Event Parameters: Command_Opcode (2 Octets)
...: Status (1 Octet)
...: Return_Parameters[] (variable)

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 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 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 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 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 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 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 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.

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:

Value	Description
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:

Value	Description
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 Code: 0x000A
Controller Index: <controller id>
Event Parameters: Store_Hint (1 Octet)
...: Address (6 Octets)
...: Address_Type (1 Octet)
...: Key_Type (1 Octet)
...: Central (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:

Value	Description
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:

Value	Description
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 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:

Value	Description
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:

Value	Description
0	Reserved (not in use)
1	Legacy Pairing
2	Reserved (not in use)
3	Initiated Connection
4	Reserved (not in use)

Device Disconnected

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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:

Value	Description
0x00	Unspecified
0x01	Connection timeout
0x02	Connection terminated by local host
0x03	Connection terminated by remote host
0x04	Connection terminated due to authentication failure
0x05	Connection terminated by local host for suspend

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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

Secure: 0x01 secure PIN code required 0x00 secure PIN code not required

User Confirmation Request

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.

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

Authentication Failed

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

Device Found

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

The following bits are defined for the Flags parameter:

Bit	Description
0	Confirm name
1	Legacy Pairing
2	Not Connectable
3	Reserved (not in use)
4	Name Request Failed
5	Scan Response

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.

The Name Request Failed flag indicates that name resolving procedure has ended with failure for this device. The user space should use this information to determine when is a good time to retry the name resolving procedure.

Discovering

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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

The event will only be sent to Management sockets other than the one through which the command was sent.

Device Unblocked

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

The event will only be sent to Management sockets other than the one through which the command was sent.

Device Unpaired

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	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 (since 1.5)

Event Code: 0x0018
Controller Index: <controller id>
Event Parameters: Store_Hint (1 Octet)
...: Random_Address (6 Octets)
...: 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:

Value	Description
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 (since 1.5)

Event Code: 0x0019
Controller Index: <controller id>
Event Parameters: Store_Hint (1 Octet)
...: 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 central or peripheral 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:

Value	Description
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:

Value	Description
0x00	Reserved (not in use)
0x01	LE Public
0x02	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 (since 1.7)

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

The event will only be sent to management sockets other than the one through which the command was sent.

Device Removed (since 1.7)

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:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

The event will only be sent to management sockets other than the one through which the command was sent.

New Connection Parameter (since 1.7)

Event Code: 0x001c
Controller Index: <controller id>
Event Parameters: Store_Hint (1 Octet)
...: 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:

Value	Description
0x00	Reserved (not in use)
0x01	LE Public
0x02	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 (since 1.7)

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 (since 1.7)

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 (since 1.7)

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 (since 1.9)

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 (since 1.9)

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 (since 1.9)

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:

Bit	Description
0	BR/EDR
1	LE Public
2	LE Random

By combining these e.g. the following values are possible:

Value	Description
0x01	BR/EDR
0x06	LE (public & random)
0x07	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 (since 1.9)

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 (since 1.9)

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 (since 1.14)

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 (since 1.14)

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.

Experimental Feature Changed (since 1.17)

Event Code: 0x0027
Controller Index: <controller id>
Event Parameters: UUID (16 Octets)
...: Flags (4 Octets)

This event indicates that the status of an experimental feature has been changed.

The event will only be sent to management sockets other than the one through which the change was triggered.

Refer to Set Experimental Feature command for the Flags parameter.

Default System Configuration Changed (since 1.18)

Event Code: 0x0028
Controller Index: <controller id>
Event Parameters: Parameter_Type[] (2 Octet)
...: Value_Length[] (1 Octet)
...: Value[] (0-255 Octets)

This event indicates the change of default system parameter values.

The event will only be sent to management sockets other than the one through which the change was triggered. In addition it will only be sent to sockets that have issues the Read Default System Configuration command.

Refer to Read Default System configuration command for the supported Parameter_Type values.

Default Runtime Configuration Changed (since 1.18)

Event Code: 0x0029
Controller Index: <controller id>
Event Parameters: Parameter_Type[] (2 Octet)
...: Value_Length[] (1 Octet)
...: Value[] (0-255 Octets)

This event indicates the change of default runtime parameter values.

Refer to Read Default Runtime configuration command for the supported Parameter_Type values.

Device Flags Changed (since 1.18)

Event Code: 0x002a
Controller Index: <controller id>
Event Parameters: Address (6 Octets)
...: Address_Type (1 Octet)
...: Supported_Flags (4 Octets)
...: Current_Flags (4 Octets)

This event indicates that the device flags have been changed via the Set Device Flags command or that a new device has been added via the Add Device command. In the latter case it is send right after the Device Added event.

Possible values for the Address_Type parameter:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

The event will only be sent to management sockets other than the one through which the command was sent.

In case this event is triggered by Add Device then it is sent to all management sockets.

Advertisement Monitor Added (since 1.18)

Event Code: 0x002b
Controller Index: <controller id>
Event Parameters: Monitor_Handle (2 Octets)

This event indicates that an advertisement monitor has been added using the Add Advertisement Patterns Monitor command.

The event will only be sent to management sockets other than the one through which the command was sent.

Advertisement Monitor Removed (since 1.18)

Event Code: 0x002c
Controller Index: <controller id>
Event Parameters: Monitor_Handle (2 Octets)

This event indicates that an advertisement monitor has been removed using the Remove Advertisement Monitor command.

The event will only be sent to management sockets other than the one through which the command was sent.

Controller Suspend (since 1.18)

Event Code: 0x002d
Controller Index: <controller_id>
Event Parameters: Suspend_State (1 octet)

This event indicates that the controller is suspended for host suspend.

Possible values for the Suspend_State parameter:

Value	Description
0x00	Running (not disconnected)
0x01	Disconnected and not scanning
0x02	Page scanning and/or passive scanning.

The value 0x00 is used for the running state and may be sent if the controller could not be configured to suspend properly.

This event will be sent to all management sockets.

Controller Resume (since 1.18)

Event Code: 0x002e
Controller Index: <controller_id>
Event Parameters: Wake_Reason (1 octet)
...: Address (6 octets)
...: Address_Type (1 octet)

This event indicates that the controller has resumed from suspend.

Possible values for the Wake_Reason parameter:

Value	Description
0x00	Resume from non-Bluetooth wake source
0x01	Wake due to unexpected event
0x02	Remote wake due to peer device connection

Currently, we expect that only peer reconnections should wake us from the suspended state. Any other events that occurred while the system should have been suspended results in wake due to unexpected event.

If the Wake_Reason is Remote wake due to connection, the address of the peer device that caused the event will be shared in Address and Address_Type. Otherwise, Address and Address_Type will both be zero.

This event will be sent to all management sockets.

Advertisement Monitor Device Found (since 1.18)

Event Code: 0x002f
Controller Index: <controller_id>
Event Parameters: Monitor_Handle (2 Octets)
...: Address (6 Octets)
...: Address_Type (1 Octet)
...: RSSI (1 Octet)
...: Flags (4 Octets)
...: AD_Data_Length (2 Octets)
...: AD_Data (0-65535 Octets)

This event indicates that the controller has started tracking a device matching an Advertisement Monitor with handle Monitor_Handle.

Monitor_Handle 0 indicates that we are not active scanning and this is a subsequent advertisement report for already matched Advertisement Monitor or the controller offloading support is not available so need to report all advertisements for software based filtering.

The address of the device being tracked will be shared in Address and Address_Type.

Possible values for the Address_Type parameter:

Value	Description
0x00	BR/EDR
0x01	LE Public
0x02	LE Random

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.

This event will be sent to all management sockets.

Advertisement Monitor Device Lost (since 1.18)

Event Code: 0x0030
Controller Index: <controller_id>
Event Parameters: Monitor_Handle (2 Octets)
...: Address (6 Octets)
...: Address_Type (1 Octet)

This event indicates that the controller has stopped tracking a device that was being tracked by an Advertisement Monitor with the handle Monitor_Handle.

The address of the device being tracked will be shared in Address and Address_Type.

Possible values for the Address_Type parameter:

Value	Description
0	Reserved (not in use)
1	LE Public
2	LE Random

This event will be sent to all management sockets.

Mesh Device Found (since 1.21)

Event Code: 0x0031
Controller Index: <controller_id>
Event Parameters: Address (6 Octets)
...: Address_Type (1 Octet)
...: RSSI (1 Octet)
...: Instant (8 Octets)
...: Flags (4 Octets)
...: AD_Data_Length (2 Octets)
...: AD_Data (0-65535 Octets)

This event indicates that the controller has received an Advertisement or Scan Result containing an AD Type matching the Mesh scan set.

The address of the sending device is returned, and must be a valid LE Address_Type.

Possible values for the Address_Type parameter:

Value	Description
0	Reserved (not in use)
1	LE Public
2	LE Random

The RSSI field is a signed octet, and is the RSSI reported by the receiving controller.

The Instant field is 64 bit value that represents the instant in time the packet was received. It's value is not intended to be interpretted by the host, and is only useful if the host wants to make a timed response to the received packet (i.e. a Poll/Response).

AD_Length and AD_Data contains the Info structure of Advertising and Scan rsults. To receive this event, AD filters must be requested with the Set Mesh Receiver command, specifying which AD Types to return. All AD structures will be received in this event if any of the filtered AD Types are present.

This event will be sent to all management sockets.

Mesh Packet Transmit Complete (since 1.21)

Event Code: 0x0032
Controller Index: <controller_id>
Event Parameters: Handle (1 Octets)

This event indicates that a requested outbound Mesh packet has completed and no longer occupies a transmit slot.

This event will be sent to all management sockets.

Copyright

Free use of this software is granted under the terms of the GNU Lesser General Public Licenses (LGPL).

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April 2025 BlueZ Linux System Administration