Channel Sounding (CS)

LE Channel Sounding (CS) . More...

Data Structures
struct	bt_le_cs_set_default_settings_param
	Default CS settings in the local Controller. More...
struct	bt_le_cs_test_param
	CS Test parameters. More...
struct	bt_le_cs_create_config_params
	CS Create Config params. More...
struct	bt_le_cs_test_cb
	Callbacks for CS Test. More...
struct	bt_le_cs_subevent_step
	Subevent result step. More...
struct	bt_le_cs_iq_sample
	Sign-extended IQ value extracted from step data. More...
struct	bt_le_cs_procedure_enable_param
struct	bt_le_cs_set_procedure_parameters_param

Macros
#define	BT_LE_CS_CHANNEL_BIT_GET(chmap, bit)
	Macro for getting a specific channel bit in CS channel map.
#define	BT_LE_CS_CHANNEL_BIT_SET_VAL(chmap, bit, val)
	Macro for setting a specific channel bit value in CS channel map.
#define	BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_1   BIT(0)
#define	BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_2   BIT(1)
#define	BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_3   BIT(2)
#define	BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_4   BIT(3)

Enumerations
enum	bt_le_cs_sync_antenna_selection_opt {   BT_LE_CS_ANTENNA_SELECTION_OPT_ONE = BT_HCI_OP_LE_CS_ANTENNA_SEL_ONE , BT_LE_CS_ANTENNA_SELECTION_OPT_TWO = BT_HCI_OP_LE_CS_ANTENNA_SEL_TWO , BT_LE_CS_ANTENNA_SELECTION_OPT_THREE = BT_HCI_OP_LE_CS_ANTENNA_SEL_THREE , BT_LE_CS_ANTENNA_SELECTION_OPT_FOUR = BT_HCI_OP_LE_CS_ANTENNA_SEL_FOUR ,   BT_LE_CS_ANTENNA_SELECTION_OPT_REPETITIVE = BT_HCI_OP_LE_CS_ANTENNA_SEL_REP , BT_LE_CS_ANTENNA_SELECTION_OPT_NO_RECOMMENDATION = BT_HCI_OP_LE_CS_ANTENNA_SEL_NONE }
enum	bt_le_cs_test_cs_sync_antenna_selection { BT_LE_CS_TEST_CS_SYNC_ANTENNA_SELECTION_ONE = BT_HCI_OP_LE_CS_ANTENNA_SEL_ONE , BT_LE_CS_TEST_CS_SYNC_ANTENNA_SELECTION_TWO = BT_HCI_OP_LE_CS_ANTENNA_SEL_TWO , BT_LE_CS_TEST_CS_SYNC_ANTENNA_SELECTION_THREE = BT_HCI_OP_LE_CS_ANTENNA_SEL_THREE , BT_LE_CS_TEST_CS_SYNC_ANTENNA_SELECTION_FOUR = BT_HCI_OP_LE_CS_ANTENNA_SEL_FOUR }
	CS Test CS_SYNC Antenna Identifier. More...
enum	bt_le_cs_initiator_snr_control {   BT_LE_CS_INITIATOR_SNR_CONTROL_18dB = BT_HCI_OP_LE_CS_INITIATOR_SNR_18 , BT_LE_CS_INITIATOR_SNR_CONTROL_21dB = BT_HCI_OP_LE_CS_INITIATOR_SNR_21 , BT_LE_CS_INITIATOR_SNR_CONTROL_24dB = BT_HCI_OP_LE_CS_INITIATOR_SNR_24 , BT_LE_CS_INITIATOR_SNR_CONTROL_27dB = BT_HCI_OP_LE_CS_INITIATOR_SNR_27 ,   BT_LE_CS_INITIATOR_SNR_CONTROL_30dB = BT_HCI_OP_LE_CS_INITIATOR_SNR_30 , BT_LE_CS_INITIATOR_SNR_CONTROL_NOT_USED = BT_HCI_OP_LE_CS_INITIATOR_SNR_NOT_USED }
	CS Test Initiator SNR control options. More...
enum	bt_le_cs_reflector_snr_control {   BT_LE_CS_REFLECTOR_SNR_CONTROL_18dB = BT_HCI_OP_LE_CS_REFLECTOR_SNR_18 , BT_LE_CS_REFLECTOR_SNR_CONTROL_21dB = BT_HCI_OP_LE_CS_REFLECTOR_SNR_21 , BT_LE_CS_REFLECTOR_SNR_CONTROL_24dB = BT_HCI_OP_LE_CS_REFLECTOR_SNR_24 , BT_LE_CS_REFLECTOR_SNR_CONTROL_27dB = BT_HCI_OP_LE_CS_REFLECTOR_SNR_27 ,   BT_LE_CS_REFLECTOR_SNR_CONTROL_30dB = BT_HCI_OP_LE_CS_REFLECTOR_SNR_30 , BT_LE_CS_REFLECTOR_SNR_CONTROL_NOT_USED = BT_HCI_OP_LE_CS_REFLECTOR_SNR_NOT_USED }
	CS Test Reflector SNR control options. More...
enum	bt_le_cs_test_override_3_pm_tone_ext {   BT_LE_CS_TEST_OVERRIDE_3_NO_TONE_EXT = BT_HCI_OP_LE_CS_TEST_TONE_EXT_NONE , BT_LE_CS_TEST_OVERRIDE_3_INITIATOR_TONE_EXT_ONLY = BT_HCI_OP_LE_CS_TEST_TONE_EXT_INIT , BT_LE_CS_TEST_OVERRIDE_3_REFLECTOR_TONE_EXT_ONLY = BT_HCI_OP_LE_CS_TEST_TONE_EXT_REFL , BT_LE_CS_TEST_OVERRIDE_3_INITIATOR_AND_REFLECTOR_TONE_EXT ,   BT_LE_CS_TEST_OVERRIDE_3_REPETITIVE_TONE_EXT = BT_HCI_OP_LE_CS_TEST_TONE_EXT_REPEAT }
	CS Test Override 3 T_PM Tone Extension. More...
enum	bt_le_cs_test_override_4_tone_antenna_permutation {   BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_00 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_00 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_01 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_01 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_02 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_02 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_03 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_03 ,   BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_04 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_04 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_05 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_05 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_06 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_06 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_07 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_07 ,   BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_08 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_08 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_09 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_09 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_10 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_10 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_11 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_11 ,   BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_12 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_12 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_13 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_13 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_14 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_14 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_15 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_15 ,   BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_16 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_16 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_17 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_17 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_18 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_18 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_19 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_19 ,   BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_20 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_20 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_21 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_21 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_22 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_22 , BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_23 = BT_HCI_OP_LE_CS_TEST_AP_INDEX_23 ,   BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_LOOP }
	CS Test Override 4 Tone Antenna Permutation. More...
enum	bt_le_cs_test_override_7_ss_marker_value { BT_LE_CS_TEST_OVERRIDE_7_SS_MARKER_VAL_0011 = BT_HCI_OP_LE_CS_TEST_SS_MARKER_VAL_0011 , BT_LE_CS_TEST_OVERRIDE_7_SS_MARKER_VAL_1100 = BT_HCI_OP_LE_CS_TEST_SS_MARKER_VAL_1100 , BT_LE_CS_TEST_OVERRIDE_7_SS_MARKER_VAL_LOOP = BT_HCI_OP_LE_CS_TEST_SS_MARKER_VAL_LOOP }
	CS Test Override 7 Sounding Sequence Marker Value. More...
enum	bt_le_cs_test_override_8_cs_sync_payload_pattern {   BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_PRBS9 = BT_HCI_OP_LE_CS_TEST_PAYLOAD_PRBS9 , BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_11110000 = BT_HCI_OP_LE_CS_TEST_PAYLOAD_11110000 , BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_10101010 = BT_HCI_OP_LE_CS_TEST_PAYLOAD_10101010 , BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_PRBS15 = BT_HCI_OP_LE_CS_TEST_PAYLOAD_PRBS15 ,   BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_11111111 = BT_HCI_OP_LE_CS_TEST_PAYLOAD_11111111 , BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_00000000 = BT_HCI_OP_LE_CS_TEST_PAYLOAD_00000000 , BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_00001111 = BT_HCI_OP_LE_CS_TEST_PAYLOAD_00001111 , BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_01010101 = BT_HCI_OP_LE_CS_TEST_PAYLOAD_01010101 ,   BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_USER = BT_HCI_OP_LE_CS_TEST_PAYLOAD_USER }
	CS Test Override 8 CS_SYNC Payload Pattern. More...
enum	bt_le_cs_create_config_context { BT_LE_CS_CREATE_CONFIG_CONTEXT_LOCAL_ONLY , BT_LE_CS_CREATE_CONFIG_CONTEXT_LOCAL_AND_REMOTE }
	CS config creation context. More...
enum	bt_le_cs_procedure_phy { BT_LE_CS_PROCEDURE_PHY_1M = BT_HCI_OP_LE_CS_PROCEDURE_PHY_1M , BT_LE_CS_PROCEDURE_PHY_2M = BT_HCI_OP_LE_CS_PROCEDURE_PHY_2M , BT_LE_CS_PROCEDURE_PHY_CODED_S8 = BT_HCI_OP_LE_CS_PROCEDURE_PHY_CODED_S8 , BT_LE_CS_PROCEDURE_PHY_CODED_S2 = BT_HCI_OP_LE_CS_PROCEDURE_PHY_CODED_S2 }

Functions
struct bt_le_cs_iq_sample	bt_le_cs_parse_pct (const uint8_t pct[3])
	Extract in-phase and quadrature terms from HCI-formatted PCT.
void	bt_le_cs_set_valid_chmap_bits (uint8_t channel_map[10])
	Set all valid channel map bits.
int	bt_le_cs_read_remote_supported_capabilities (struct bt_conn *conn)
	Read Remote Supported Capabilities.
int	bt_le_cs_set_default_settings (struct bt_conn *conn, const struct bt_le_cs_set_default_settings_param *params)
	Set Channel Sounding default settings.
int	bt_le_cs_read_remote_fae_table (struct bt_conn *conn)
	Read Remote FAE Table.
int	bt_le_cs_test_cb_register (struct bt_le_cs_test_cb cs_test_cb)
	Register callbacks for the CS Test mode.
int	bt_le_cs_start_test (const struct bt_le_cs_test_param *params)
	Start a CS test.
int	bt_le_cs_create_config (struct bt_conn *conn, struct bt_le_cs_create_config_params *params, enum bt_le_cs_create_config_context context)
	Create CS configuration.
int	bt_le_cs_remove_config (struct bt_conn *conn, uint8_t config_id)
	Create CS configuration.
int	bt_le_cs_stop_test (void)
	Stop ongoing CS Test.
void	bt_le_cs_step_data_parse (struct net_buf_simple *step_data_buf, bool(*func)(struct bt_le_cs_subevent_step *step, void *user_data), void *user_data)
	Parse CS Subevent Step Data.
int	bt_le_cs_security_enable (struct bt_conn *conn)
	CS Security Enable.
int	bt_le_cs_procedure_enable (struct bt_conn *conn, const struct bt_le_cs_procedure_enable_param *params)
	CS Procedure Enable.
int	bt_le_cs_set_procedure_parameters (struct bt_conn *conn, const struct bt_le_cs_set_procedure_parameters_param *params)
	CS Set Procedure Parameters.
int	bt_le_cs_set_channel_classification (uint8_t channel_classification[10])
	CS Set Channel Classification.
int	bt_le_cs_read_local_supported_capabilities (struct bt_conn_le_cs_capabilities *ret)
	CS Read Local Supported Capabilities.
int	bt_le_cs_write_cached_remote_supported_capabilities (struct bt_conn *conn, const struct bt_conn_le_cs_capabilities *params)
	CS Write Cached Remote Supported Capabilities.
int	bt_le_cs_write_cached_remote_fae_table (struct bt_conn *conn, int8_t remote_fae_table[72])
	CS Write Cached Remote FAE Table.

Detailed Description

LE Channel Sounding (CS) .

Macro Definition Documentation

BT_LE_CS_CHANNEL_BIT_GET

#define BT_LE_CS_CHANNEL_BIT_GET	(		chmap,
			bit )

#include <zephyr/bluetooth/cs.h>

Value:

(((chmap)[(bit) / 8] >> ((bit) % 8)) & 1)

Macro for getting a specific channel bit in CS channel map.

Parameters

[in]	chmap	Channel map array
[in]	bit	Bit number to be accessed

Returns

Bit value, either 1 or 0

BT_LE_CS_CHANNEL_BIT_SET_VAL

#define BT_LE_CS_CHANNEL_BIT_SET_VAL	(		chmap,
			bit,
			val )

#include <zephyr/bluetooth/cs.h>

Value:

        ((chmap)[(bit) / 8] = ((chmap)[(bit) / 8] & ~BIT((bit) % 8)) | ((val) << ((bit) % 8)))

Macro for setting a specific channel bit value in CS channel map.

Parameters

[in]	chmap	Channel map array
[in]	bit	Bit number to be accessed
[in]	val	Bit value to be set, either 1 or 0

BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_1

#define BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_1   BIT(0)

#include <zephyr/bluetooth/cs.h>

BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_2

#define BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_2   BIT(1)

#include <zephyr/bluetooth/cs.h>

BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_3

#define BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_3   BIT(2)

#include <zephyr/bluetooth/cs.h>

BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_4

#define BT_LE_CS_PROCEDURE_PREFERRED_PEER_ANTENNA_4   BIT(3)

#include <zephyr/bluetooth/cs.h>

Enumeration Type Documentation

bt_le_cs_create_config_context

enum bt_le_cs_create_config_context

#include <zephyr/bluetooth/cs.h>

CS config creation context.

Enumerator
BT_LE_CS_CREATE_CONFIG_CONTEXT_LOCAL_ONLY	Write CS configuration in local Controller only
BT_LE_CS_CREATE_CONFIG_CONTEXT_LOCAL_AND_REMOTE	Write CS configuration in both local and remote Controller using Channel Sounding Configuration procedure.

bt_le_cs_initiator_snr_control

enum bt_le_cs_initiator_snr_control

#include <zephyr/bluetooth/cs.h>

CS Test Initiator SNR control options.

Enumerator
BT_LE_CS_INITIATOR_SNR_CONTROL_18dB
BT_LE_CS_INITIATOR_SNR_CONTROL_21dB
BT_LE_CS_INITIATOR_SNR_CONTROL_24dB
BT_LE_CS_INITIATOR_SNR_CONTROL_27dB
BT_LE_CS_INITIATOR_SNR_CONTROL_30dB
BT_LE_CS_INITIATOR_SNR_CONTROL_NOT_USED

bt_le_cs_procedure_phy

enum bt_le_cs_procedure_phy

#include <zephyr/bluetooth/cs.h>

Enumerator
BT_LE_CS_PROCEDURE_PHY_1M
BT_LE_CS_PROCEDURE_PHY_2M
BT_LE_CS_PROCEDURE_PHY_CODED_S8
BT_LE_CS_PROCEDURE_PHY_CODED_S2

bt_le_cs_reflector_snr_control

enum bt_le_cs_reflector_snr_control

#include <zephyr/bluetooth/cs.h>

CS Test Reflector SNR control options.

Enumerator
BT_LE_CS_REFLECTOR_SNR_CONTROL_18dB
BT_LE_CS_REFLECTOR_SNR_CONTROL_21dB
BT_LE_CS_REFLECTOR_SNR_CONTROL_24dB
BT_LE_CS_REFLECTOR_SNR_CONTROL_27dB
BT_LE_CS_REFLECTOR_SNR_CONTROL_30dB
BT_LE_CS_REFLECTOR_SNR_CONTROL_NOT_USED

bt_le_cs_sync_antenna_selection_opt

enum bt_le_cs_sync_antenna_selection_opt

#include <zephyr/bluetooth/cs.h>

Enumerator
BT_LE_CS_ANTENNA_SELECTION_OPT_ONE	Use antenna identifier 1 for CS_SYNC packets.
BT_LE_CS_ANTENNA_SELECTION_OPT_TWO	Use antenna identifier 2 for CS_SYNC packets.
BT_LE_CS_ANTENNA_SELECTION_OPT_THREE	Use antenna identifier 3 for CS_SYNC packets.
BT_LE_CS_ANTENNA_SELECTION_OPT_FOUR	Use antenna identifier 4 for CS_SYNC packets.
BT_LE_CS_ANTENNA_SELECTION_OPT_REPETITIVE	Use antennas in repetitive order from 1 to 4 for CS_SYNC packets.
BT_LE_CS_ANTENNA_SELECTION_OPT_NO_RECOMMENDATION	No recommendation for local controller antenna selection.

bt_le_cs_test_cs_sync_antenna_selection

enum bt_le_cs_test_cs_sync_antenna_selection

#include <zephyr/bluetooth/cs.h>

CS Test CS_SYNC Antenna Identifier.

Enumerator
BT_LE_CS_TEST_CS_SYNC_ANTENNA_SELECTION_ONE
BT_LE_CS_TEST_CS_SYNC_ANTENNA_SELECTION_TWO
BT_LE_CS_TEST_CS_SYNC_ANTENNA_SELECTION_THREE
BT_LE_CS_TEST_CS_SYNC_ANTENNA_SELECTION_FOUR

bt_le_cs_test_override_3_pm_tone_ext

enum bt_le_cs_test_override_3_pm_tone_ext

#include <zephyr/bluetooth/cs.h>

CS Test Override 3 T_PM Tone Extension.

Enumerator
BT_LE_CS_TEST_OVERRIDE_3_NO_TONE_EXT	Initiator and reflector tones sent without tone extension.
BT_LE_CS_TEST_OVERRIDE_3_INITIATOR_TONE_EXT_ONLY	Initiator tone sent with extension, reflector tone sent without tone extension.
BT_LE_CS_TEST_OVERRIDE_3_REFLECTOR_TONE_EXT_ONLY	Initiator tone sent without extension, reflector tone sent with tone extension.
BT_LE_CS_TEST_OVERRIDE_3_INITIATOR_AND_REFLECTOR_TONE_EXT	Initiator and reflector tones sent with tone extension.
BT_LE_CS_TEST_OVERRIDE_3_REPETITIVE_TONE_EXT	Applicable for mode-2 and mode-3 only: Loop through: BT_LE_CS_TEST_OVERRIDE_3_NO_TONE_EXT BT_LE_CS_TEST_OVERRIDE_3_INITIATOR_TONE_EXT_ONLY BT_LE_CS_TEST_OVERRIDE_3_REFLECTOR_TONE_EXT_ONLY BT_LE_CS_TEST_OVERRIDE_3_INITIATOR_AND_REFLECTOR_TONE_EXT

bt_le_cs_test_override_4_tone_antenna_permutation

enum bt_le_cs_test_override_4_tone_antenna_permutation

#include <zephyr/bluetooth/cs.h>

CS Test Override 4 Tone Antenna Permutation.

These values represent indices in an antenna path permutation table.

Which table is applicable (and which indices are valid) depends on the maximum number of antenna paths (N_AP).

If N_AP = 2, the permutation table is:

+-----------------------------—+---------------------------------------—+ | Antenna Path Permutation Index | Antenna Path Positions After Permutation | +-----------------------------—+---------------------------------------—+ | 0 | A1 A2 | | 1 | A2 A1 | +-----------------------------—+---------------------------------------—+

If N_AP = 3, the permutation table is:

+-----------------------------—+---------------------------------------—+ | Antenna Path Permutation Index | Antenna Path Positions After Permutation | +-----------------------------—+---------------------------------------—+ | 0 | A1 A2 A3 | | 1 | A2 A1 A3 | | 2 | A1 A3 A2 | | 3 | A3 A1 A2 | | 4 | A3 A2 A1 | | 5 | A2 A3 A1 | +-----------------------------—+---------------------------------------—+

If N_AP = 4, the permutation table is:

+-----------------------------—+---------------------------------------—+ | Antenna Path Permutation Index | Antenna Path Positions After Permutation | +-----------------------------—+---------------------------------------—+ | 0 | A1 A2 A3 A4 | | 1 | A2 A1 A3 A4 | | 2 | A1 A3 A2 A4 | | 3 | A3 A1 A2 A4 | | 4 | A3 A2 A1 A4 | | 5 | A2 A3 A1 A4 | | 6 | A1 A2 A4 A3 | | 7 | A2 A1 A4 A3 | | 8 | A1 A4 A2 A3 | | 9 | A4 A1 A2 A3 | | 10 | A4 A2 A1 A3 | | 11 | A2 A4 A1 A3 | | 12 | A1 A4 A3 A2 | | 13 | A4 A1 A3 A2 | | 14 | A1 A3 A4 A2 | | 15 | A3 A1 A4 A2 | | 16 | A3 A4 A1 A2 | | 17 | A4 A3 A1 A2 | | 18 | A4 A2 A3 A1 | | 19 | A2 A4 A3 A1 | | 20 | A4 A3 A2 A1 | | 21 | A3 A4 A2 A1 | | 22 | A3 A2 A4 A1 | | 23 | A2 A3 A4 A1 | +-----------------------------—+---------------------------------------—+

Enumerator
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_00
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_01
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_02
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_03
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_04
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_05
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_06
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_07
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_08
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_09
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_10
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_11
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_12
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_13
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_14
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_15
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_16
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_17
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_18
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_19
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_20
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_21
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_22
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_23
BT_LE_CS_TEST_OVERRIDE_4_ANTENNA_PERMUTATION_INDEX_LOOP	Loop through all valid Antenna Permutation Indices starting from the lowest index.

bt_le_cs_test_override_7_ss_marker_value

enum bt_le_cs_test_override_7_ss_marker_value

#include <zephyr/bluetooth/cs.h>

CS Test Override 7 Sounding Sequence Marker Value.

Enumerator
BT_LE_CS_TEST_OVERRIDE_7_SS_MARKER_VAL_0011
BT_LE_CS_TEST_OVERRIDE_7_SS_MARKER_VAL_1100
BT_LE_CS_TEST_OVERRIDE_7_SS_MARKER_VAL_LOOP	Loop through pattern '0011' and '1100' (in transmission order)

bt_le_cs_test_override_8_cs_sync_payload_pattern

enum bt_le_cs_test_override_8_cs_sync_payload_pattern

#include <zephyr/bluetooth/cs.h>

CS Test Override 8 CS_SYNC Payload Pattern.

Enumerator
BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_PRBS9	PRBS9 payload sequence.
BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_11110000	Repeated '11110000' payload sequence.
BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_10101010	Repeated '10101010' payload sequence.
BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_PRBS15	PRBS15 payload sequence.
BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_11111111	Repeated '11111111' payload sequence.
BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_00000000	Repeated '00000000' payload sequence.
BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_00001111	Repeated '00001111' payload sequence.
BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_01010101	Repeated '01010101' payload sequence.
BT_LE_CS_TEST_OVERRIDE_8_PAYLOAD_PATTERN_USER	Custom payload provided by the user.

Function Documentation

bt_le_cs_create_config()

int bt_le_cs_create_config	(	struct bt_conn *	conn,
		struct bt_le_cs_create_config_params *	params,
		enum bt_le_cs_create_config_context	context )

#include <zephyr/bluetooth/cs.h>

Create CS configuration.

This command is used to create a new CS configuration or update an existing one with the config id specified.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.
params	CS Create Config parameters
context	Controls whether the configuration is written to the local controller or both the local and the remote controller

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_parse_pct()

struct bt_le_cs_iq_sample bt_le_cs_parse_pct

(

const uint8_t

pct[3]

)

#include <zephyr/bluetooth/cs.h>

Extract in-phase and quadrature terms from HCI-formatted PCT.

Convenience function for processing 24-bit phase correction terms found in CS step data. The 12-bit signed real and imaginary components are converted to host endianness and sign-extended.

Parameters

pct	24-bit little-endian phase correction term.

Returns

struct bt_le_cs_iq_sample containing real and imaginary terms as int16_t

bt_le_cs_procedure_enable()

int bt_le_cs_procedure_enable	(	struct bt_conn *	conn,
		const struct bt_le_cs_procedure_enable_param *	params )

#include <zephyr/bluetooth/cs.h>

CS Procedure Enable.

This command is used to enable or disable the scheduling of CS procedures by the local Controller, with the remote device identified in the conn parameter.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.
params	Parameters for the CS Procedure Enable command.

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_read_local_supported_capabilities()

int bt_le_cs_read_local_supported_capabilities

(

struct bt_conn_le_cs_capabilities *

ret

)

#include <zephyr/bluetooth/cs.h>

CS Read Local Supported Capabilities.

This command is used to read the CS capabilities that are supported by the local Controller.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

ret	Return values for the CS Procedure Enable command.

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_read_remote_fae_table()

int bt_le_cs_read_remote_fae_table

(

struct bt_conn *

conn

)

#include <zephyr/bluetooth/cs.h>

Read Remote FAE Table.

This command is used to read the per-channel mode-0 Frequency Actuation Error table of the remote Controller.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_read_remote_supported_capabilities()

int bt_le_cs_read_remote_supported_capabilities

(

struct bt_conn *

conn

)

#include <zephyr/bluetooth/cs.h>

Read Remote Supported Capabilities.

This command is used to query the CS capabilities that are supported by the remote controller.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_remove_config()

int bt_le_cs_remove_config	(	struct bt_conn *	conn,
		uint8_t	config_id )

#include <zephyr/bluetooth/cs.h>

Create CS configuration.

This command is used to remove a CS configuration from the local controller identified by the config_id

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.
config_id	CS Config ID

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_security_enable()

int bt_le_cs_security_enable

(

struct bt_conn *

conn

)

#include <zephyr/bluetooth/cs.h>

CS Security Enable.

This command is used to start or restart the Channel Sounding Security Start procedure in the local Controller for the ACL connection identified in the conn parameter.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_set_channel_classification()

int bt_le_cs_set_channel_classification

(

uint8_t

channel_classification[10]

)

#include <zephyr/bluetooth/cs.h>

CS Set Channel Classification.

This command is used to update the channel classification based on its local information.

The nth bitfield (in the range 0 to 78) contains the value for the CS channel index n. Channel Enabled = 1; Channel Disabled = 0.

Channels n = 0, 1, 23, 24, 25, 77, and 78 shall be reserved for future use and shall be set to zero. At least 15 channels shall be enabled.

The most significant bit (bit 79) is reserved for future use.

Note

To use this API, CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

channel_classification

Bit fields

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_set_default_settings()

int bt_le_cs_set_default_settings	(	struct bt_conn *	conn,
		const struct bt_le_cs_set_default_settings_param *	params )

#include <zephyr/bluetooth/cs.h>

Set Channel Sounding default settings.

This command is used to set default Channel Sounding settings for this connection.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.
params	Channel sounding default settings parameters.

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_set_procedure_parameters()

int bt_le_cs_set_procedure_parameters	(	struct bt_conn *	conn,
		const struct bt_le_cs_set_procedure_parameters_param *	params )

#include <zephyr/bluetooth/cs.h>

CS Set Procedure Parameters.

This command is used to set the parameters for the scheduling of one or more CS procedures by the local controller.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.
params	Parameters for the CS Set Procedure Parameters command.

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_set_valid_chmap_bits()

void bt_le_cs_set_valid_chmap_bits

(

uint8_t

channel_map[10]

)

#include <zephyr/bluetooth/cs.h>

Set all valid channel map bits.

This command is used to enable all valid channels in a given CS channel map

Parameters

channel_map

Chanel map

bt_le_cs_start_test()

int bt_le_cs_start_test

(

const struct bt_le_cs_test_param *

params

)

#include <zephyr/bluetooth/cs.h>

Start a CS test.

This command is used to start a CS test where the IUT is placed in the role of either the initiator or reflector.

The first mode-0 channel in the list is used as the starting channel for the test. At the beginning of any test, the IUT in the reflector role shall listen on the first mode-0 channel until it receives the first transmission from the initiator. Similarly, with the IUT in the initiator role, the tester will start by listening on the first mode-0 channel and the IUT shall transmit on that channel for the first half of the first CS step. Thereafter, the parameters of this command describe the required transmit and receive behavior for the CS test.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING_TEST must be set.

Parameters

params

CS Test parameters

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_step_data_parse()

void bt_le_cs_step_data_parse	(	struct net_buf_simple *	step_data_buf,
		bool(*	func )(struct bt_le_cs_subevent_step *step, void *user_data),
		void *	user_data )

#include <zephyr/bluetooth/cs.h>

Parse CS Subevent Step Data.

A helper for parsing HCI-formatted step data found in channel sounding subevent results.

A typical use-case is filtering out data which does not meet certain packet quality or NADM requirements.

Warning

This function will consume the data when parsing.

Parameters

step_data_buf	Pointer to a buffer containing the step data.
func	Callback function which will be called for each step data found. The callback should return true to continue parsing, or false to stop.
user_data	User data to be passed to the callback.

bt_le_cs_stop_test()

int bt_le_cs_stop_test

(

void

)

#include <zephyr/bluetooth/cs.h>

Stop ongoing CS Test.

This command is used to stop any CS test that is in progress.

The controller is expected to finish reporting any subevent results before completing this termination.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING_TEST must be set.

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_test_cb_register()

int bt_le_cs_test_cb_register

(

struct bt_le_cs_test_cb

cs_test_cb

)

#include <zephyr/bluetooth/cs.h>

Register callbacks for the CS Test mode.

Existing callbacks can be unregistered by providing NULL function pointers.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING_TEST must be set.

Parameters

cs_test_cb

Set of callbacks to be used with CS Test

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_write_cached_remote_fae_table()

int bt_le_cs_write_cached_remote_fae_table	(	struct bt_conn *	conn,
		int8_t	remote_fae_table[72] )

#include <zephyr/bluetooth/cs.h>

CS Write Cached Remote FAE Table.

This command is used to write a cached copy of the per-channel mode-0 Frequency Actuation Error table of the remote device in the local Controller.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.
remote_fae_table	Per-channel mode-0 FAE table of the local Controller

Returns

Zero on success or (negative) error code on failure.

bt_le_cs_write_cached_remote_supported_capabilities()

int bt_le_cs_write_cached_remote_supported_capabilities	(	struct bt_conn *	conn,
		const struct bt_conn_le_cs_capabilities *	params )

#include <zephyr/bluetooth/cs.h>

CS Write Cached Remote Supported Capabilities.

This command is used to write the cached copy of the CS capabilities that are supported by the remote Controller for the connection identified.

Note

To use this API CONFIG_BT_CHANNEL_SOUNDING must be set.

Parameters

conn	Connection Object.
params	Parameters for the CS Write Cached Remote Supported Capabilities command.

Returns

Zero on success or (negative) error code on failure.