GAP API for btshell

Generic Access Profile (GAP) defines the generic procedures related to discovery of Bluetooth devices (idle mode procedures) and link management aspects of connecting to Bluetooth devices (connecting mode procedures). It also defines procedures related to use of different security levels.

Several different modes and procedures may be performed simultaneously over an LE physical transport. The following modes and procedures are defined for use over an LE physical transport:

1. Broadcast mode and observation procedure

   • These allow two devices to communicate in a unidirectional connectionless manner using the advertising events.

2. Discovery modes and procedures

   • All devices shall be in either non-discoverable mode or one of the discoverable modes.

   • A device in the discoverable mode shall be in either the general discoverable mode or the limited discoverable mode.

   • A device in non-discoverable mode will not be discovered by any device that is performing either the general discovery procedure or the limited discovery procedure.

3. Connection modes and procedures

   • allow a device to establish a connection to another device.

   • allow updating of parameters of the connection

   • allow termination of the connection

4. Bonding modes and procedures

   • Bonding allows two connected devices to exchange and store security and identity information to create a trusted relationship.

   • Bonding can occur only between two devices in bondable mode.

Available commands

Parameters default values are marked red.

Configuration

Command	Parmeters	** Possible values**	Description
set			Set configuration options
	addr	XX:XX:XX:XX:XX:XX	Local device address
	addr_type	public	Local device address type
		random	Use random address for scan requests
	mtu	[23-UINT16_MAX]	GATT Maximum Transmission Unit (MTU)
	irk	XX:XX:XX…	Local Identity Resolving Key (16 byte
set-priv-mode			Set privacy mode for device
	addr	XX:XX:XX:XX:XX:XX	Remote device address
	addr_type	public	Remote device public address type
		random	Remote device random address type
	mode	[0-1]	0 - use network privacy, 1 - use device privacy
white-list			Add devices to white list (this command accepts multiple instances of addr and addr_type parameters)
	addr	XX:XX:XX:XX:XX:XX	Remote device address
	addr_type	public	Remote device public address type
		random	Remote device random address type

Device discovery and connection

Command	Parmeters	** Possible values**	Description
scan			Discover remote devices
	cancel		cancel ongoing scan procedure
	extended	none	Start legacy scan
		1M	Start extended scan on 1M PHY
		coded	Start extended scan on Coded PHY
		both	Start extended scan on both PHYs
	duration	[1-INT32_MAX],	Duration of scan in milliseconds
	limited	[0-1]	Use limited discovery procedure
	passive	[0-1]	Use passive scan
	interval	[0-UINT16_MAX]	Scan interval, if 0 use stack’s default
	window	[0-UINT16_MAX]	Scan window, if 0 use stack’s default
	filter	no_wl	Scan filter policy - Accept all advertising packets
		use_wl	Accept only advertising packets from devices on White List
		no_wl_inita	Accept all advertising packets (including directed RPA)
		use_wl_inita	Accept only advertising packets from devices on White List (including directed RPA)
	nodups	[0-1]	Disable duplicates filtering
	own_addr_type	public	Use public address for scan requests
		random	Use random address for scan requests
		rpa_pub	Use RPA address for scan requests (fallback to public if no IRK)
		rpa_rnd	Use RPA address for scan requests (fallback to random if no IRK)
	extended_duration	[0-UINT16_MAX]	Duration of extended scan in 10 milliseconds
	extended_period	[0-UINT16_MAX]	Periodic scan interval in 1.28 seconds (0 disabled)
	longrange_interval	[0-UINT16_MAX]	Scan interval for Coded Scan , if 0 use stack’s default
	longrange_window	[0-UINT16_MAX]	Scan window for Coded Scan , if 0 use stack’s default
	longrange_passive	[0-1]	Use passive scan for Coded Scan
connect			Initiate connection to remote device
	cancel		Cancel ongoing connection procedure
	extended	none	Use legacy connection procedure
		1M	Extended connect using 1M PHY scan parameters
		coded	Extended connect using Coded PHY scan parameters
		both	Extended connect using 1M and Coded PHYs scan parameters
		all	Extended connect using 1M and Coded PHYs scan parameters (Provide also connection parameters for 2M PHY)
	peer_addr_type	public	Remote device public address type
		random	Remote device random address type
		public_id	Remote device public address type (Identity)
		random_id	Remote device random address type (Identity)
	peer_addr	XX:XX:XX:XX:XX:XX	Remote device address
	own_addr_type	public	Use public address for scan requests
		random	Use random address for scan requests
		rpa_pub	Use RPA address for scan requests (fallback to public if no IRK)
		rpa_rnd	Use RPA address for scan requests (fallback to random if no IRK)
	duration	[0-INT32_MAX]	Connection attempt duration, if 0 use stack’s default
	scan_interval	[0-UINT16_MAX]	Scan interval, default: 0x0010
	scan_window	[0-UINT16_MAX]	Scan window, default: 0x0010
	interval_min	[0-UINT16_MAX]	Minimum connection interval, default: 30
	interval_max	[0-UINT16_MAX]	Maximum connection interval, default: 50
	latency	[UINT16]	Connection latency, default: 0
	timeout	[UINT16]	Connection timeout, default: 0x0100
	min_conn_event_len	[UINT16]	Minimum length of connection event, default: 0x0010
	max_conn_event_len	[UINT16]	Maximum length of connection event, default: 0x0300
	coded_scan_interval	[0-UINT16_MAX]	Coded PHY Scan interval, default: 0x0010
	coded_scan_window	[0-UINT16_MAX]	Coded PHY Scan window, default: 0x0010
	coded_interval_min	[0-UINT16_MAX]	Coded PHY Minimum connection interval, default: 30
	coded_interval_max	[0-UINT16_MAX]	Coded PHY Maximum connection interval, default: 50
	coded_latency	[UINT16]	Coded PHY Connection latency, default: 0
	coded_timeout	[UINT16]	Coded PHY Connection timeout, default: 0x0100
	coded_min_conn_event_len	[UINT16]	Coded PHY Minimum length of connection event, default: 0x0010
	coded_max_conn_event_len	[UINT16]	Coded PHY Maximum length of connection event, default: 0x0300
	2M_scan_interval	[0-UINT16_MAX]	2M PHY Scan interval, default: 0x0010
	2M_scan_window	[0-UINT16_MAX]	2M PHY Scan window, default: 0x0010
	2M_interval_min	[0-UINT16_MAX]	2M PHY Minimum connection interval, default: 30
	2M_interval_max	[0-UINT16_MAX]	2M PHY Maximum connection interval, default: 50
	2M_latency	[UINT16]	2M PHY Connection latency, default: 0
	2M_timeout	[UINT16]	2M PHY Connection timeout, default: 0x0100
	2M_min_conn_event_len	[UINT16]	2M PHY Minimum length of connection event, default: 0x0010
	2M_max_conn_event_len	[UINT16]	2M PHY Maximum length of connection event, default: 0x0300
disconnect			Disconnect exisiting connection
	conn	[UINT16]	Connection handle
	reason	[UINT8]	Disconnect reason
show-addr			Show local public and random identity addresses
show-conn			Show current connections
conn-rssi			Obtain RSSI of specified connection
	conn	[UINT16]	Connection handle
conn-update-params			Update parameters of specified connection
	conn	[UINT16]	Connection handle
	interval_min	[0-UINT16_MAX]	Minimum connection interval, default: 30
	interval_max	[0-UINT16_MAX]	Maximum connection interval, default: 50
	latency	[UINT16]	Connection latency, default: 0
	timeout	[UINT16]	Connection timeout, default: 0x0100
	min_conn_event_len	[UINT16]	Minimum length of connection event, default: 0x0010
	max_conn_event_len	[UINT16]	Maximum length of connection event, default: 0x0300
conn-datalen			Set DLE parmaeters for connection
	conn	[UINT16]	Connection handle
	octets	[UINT16]	Maximum transmission packet size
	time	[UINT16]	Maximum transmission packet time
phy-set			Set prefered PHYs used for connection
	conn	[UINT16]	Connection handle
	tx_phys_mask	[UINT8]	Prefered PHYs on TX is mask of following bits0x00 - no preference0x01 - 1M, 0x02 - 2M, 0x04 - Coded
	rx_phys_mask	[UINT8]	Prefered PHYs on RX is mask of following bits0x00 - no preference0x01 - 1M, 0x02 - 2M, 0x04 - Coded
	phy_opts	[UINT16]	Options for Coded PHY 0 - any coding, 1 - prefer S2, 2 - prefer S8
phy-set-default			Set default prefered PHYs used for new connection
	tx_phys_mask	[UINT8]	Prefered PHYs on TX is mask of following bits0x00 - no preference0x01 - 1M, 0x02 - 2M, 0x04 - Coded
	rx_phys_mask	[UINT8]	Prefered PHYs on RX is mask of following bits0x00 - no preference0x01 - 1M, 0x02 - 2M, 0x04 - Coded
phy-read			Read connection current PHY
	conn	[UINT16]	Connection handle
l2cap-update			Update connection parameters
	interval_min	[0-UINT16_MAX]	Minimum connection interval, default: 30
	interval_max	[0-UINT16_MAX]	Maximum connection interval, default: 50
	latency	[UINT16]	Connection latency, default: 0
	timeout	[UINT16]	Connection timeout, default: 0x0100

Security

Command	Parmeters	** Possible values**	Description
security-set-data			Set security configuration
	oob-flag	[0-1]	Set Out-Of-Band (OOB) flag in Security Manager
	mitm-flag	[0-1]	Set Man-In-The-Middle (MITM) flag in Security Manager
	io_capabilities	0	Set Input-Output Capabilities to “DisplayOnly”
		1	Set Input-Output Capabilities to “DisplayYesNo”
		2	Set Input-Output Capabilities to “KeyboardOnly”
		3	Set Input-Output Capabilities to “NoInputNoOutput”
		4	Set Input-Output Capabilities to “KeyboardDisplay”
	our_key_dist	[UINT8]	Set Local Keys Distribution, this is a bit field of possible values: LTK (0x01), IRK (0x02), CSRK (0x04), LTK_SC(0x08)
	their_key_dist	[UINT8]	Set Remote Keys Distribution, this is a bit field of possible values: LTK (0x01), IRK (0x02), CSRK (0x04), LTK_SC(0x08)
	bonding-flag	[0-1]	Set Bonding flag in Security Manager
	sc-flag	[0-1]	Set Secure Connections flag in Security Manager
security-pair			Start pairing procedure
	conn	[UINT16]	Connection handle
security-encryption			Start encryption procedure
	conn	[UINT16]	Connection handle
	ediv	[UINT16]	EDIV for LTK to use (use storage if not provided)
	rand	[UINT64]	Rand for LTK
	ltk	XX:XX:XX…	LTK (16 bytes)
security-start			Start security procedure (This starts either pairing or encryption depending if keys are stored)
	conn	[UINT16]	Connection handle
auth-passkey			Reply to Passkey request
	conn	[UINT16]	Connection handle
	action	[UINT16]	Action to reply (as received in event)
	key	[0-999999]	Passkey to reply (Input or Display action)
	oob	XX:XX:XX:…	Out-Of-Band secret (16 bytes) (OOB action)
	yesno	Yy-Ny	Confirm passkey (for Passkey Confirm action)

Advertising with Extended Advertising enabled

Legacy Advertising with Extended Advertising disabled

Command	Parmeters	** Possible values**	Description
advertise			Enable advertising
	stop		Stop enabled advertising
	conn	und	Connectable mode: undirected
		non	non-connectable
		dir	directed
	discov	gen	Discoverable mode: general discoverable
		ltd	limited discoverable
		non	non-discoverable
	scannable	[0-1]	Use scannable advertising
	peer_addr_type	public	Remote device public address type
		random	Remote device random address type
		public_id	Remote device public address type (Identity)
		random_id	Remote device random address type (Identity)
	peer_addr	XX:XX:XX:XX:XX:XX	Remote device address - if provided perform directed advertising
	own_addr_type	public	Use public address for scan requests
		random	Use random address for scan requests
		rpa_pub	Use RPA address for scan requests (fallback to public if no IRK)
		rpa_rnd	Use RPA address for scan requests (fallback to random if no IRK)
	channel_map	[0-UINT8_MAX}	Primary advertising channels map. If 0 use all channels.
	filter	none	Advertising filter policy - no filtering, no whitelist used
		scan	process all connection requests but only scans from white list
		conn	process all scan request but only connection requests from white list
		both	ignore all scan and connection requests unless in white list
	interval_min	[0-UINT32_MAX]	Minimum advertising interval in 0.625 miliseconds If 0 use stack default.
	interval_max	[0-UINT32_MAX]	Maximum advertising interval in 0.625 miliseconds If 0 use stack default.
	high_duty	[0-1]	Use high_duty advertising
	duration	[1-INT32_MAX]	Advertising duration in ms
set-adv-data			Configure advertising instance ADV_DATA. This allow to configure following TLVs:
set-scan-rsp			Configure advertising instance SCAN_RSP. This allow to configure following TLVs:
	flags	[0-UINT8_MAX]	Flags value
	uuid16	[UINT16]	16-bit UUID value (can be passed multiple times)
	uuid16_is_complete	[0-1]	I 16-bit UUID list is complete
	uuid32	[UINT32]	32-bit UUID value (can be passed multiple times)
	uuid32_is_complete	[0-1]	I 32-bit UUID list is complete
	uuid128	XX:XX:XX:…	128-bit UUID value (16 bytes) (can be passed multiple times)
	uuid128_is_complete	[0-1]	I 128-bit UUID list is complete
	tx_power_level	[-127 - 127]	TX Power level to include
	appearance	[UINT16]	Appearance
	name	string	Name
	advertising_interval	[UINT16]	Advertising interval
	service_data_uuid32	XX:XX:XX:…	32-bit UUID service data
	service_data_uuid128	XX:XX:XX:…	128-bit UUID service data
	uri	XX:XX:XX:…	URI
	msg_data	XX:XX:XX:…	Manufacturer data
	eddystone_url	string	Eddystone with specified URL

L2CAP Connection Oriented Channels

Command	Parmeters	** Possible values**	Description
l2cap-create-server			Create L2CAP server
	psm	[UINT16]	PSM
l2cap-connect			Connect to remote L2CAP server
	conn	[UINT16]	Connection handle
	psm	[UINT16]	PSM
l2cap-disconnect			Disconnec from L2CAP server
	conn	[UINT16]	Connection handle
	idx	[UINT16]	L2CAP connection oriented channel identifier
l2cap-send			Send data over connected L2CAP channel
	conn	[UINT16]	Connection handle
	idx	[UINT16]	L2CAP connection oriented channel identifier
	bytes	[UINT16]	Number of bytes to send (hardcoded data pattern)
l2cap-show-coc			Show connected L2CAP channels

Keys storage

Command	Parmeters	** Possible values**	Description
keystore-add			Add keys to storage
	type	msec	Master Key
		ssec	Slave Key
		cccd	Client Characteristic Configuration Descriptor
	addr	XX:XX:XX:XX:XX:XX	Device address
	addr_type	public	Device address type
		random	Use random address for scan requests
	ediv	[UINT16]	EDIV for LTK to add
	rand	[UINT64]	Rand for LTK
	ltk	XX:XX:XX…	LTK (16 bytes)
	irk	XX:XX:XX…	Identity Resolving Key (16 bytes)
	csrk	XX:XX:XX…	Connection Signature Resolving Key (16 bytes)
keystore-del			Delete keys from storage
	type	msec	Master Key
		ssec	Slave Key
		cccd	Client Characteristic Configuration Descriptor
	addr	XX:XX:XX:XX:XX:XX	Device address
	addr_type	public	Device address type
		random	Use random address for scan requests
	ediv	[UINT16]	EDIV for LTK to remove
	rand	[UINT64]	Rand for LTK
keystore-show			Show stored keys
	type	msec	Master Keys
		ssec	Slave Keys
		cccd	Client Characteristic Configuration Descriptor s