d8d8ef74ce
Add vendor specific IQ samples report that holds IQ data in 16 bits signed integer format. Thanks to that we preserve complete accuracy of IQ samples provided by Nordic Direction Finding Extension in Radio peripheral. That helps to maintain better accuracy of evaluated angles with use of reported IQ samples. Signed-off-by: Piotr Pryga <piotr.pryga@nordicsemi.no>
339 lines
12 KiB
Plaintext
339 lines
12 KiB
Plaintext
# Zephyr Bluetooth Controller configuration options
|
|
|
|
# Copyright (c) 2020 Nordic Semiconductor ASA
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
|
|
# BT_CTLR_DF_SUPPORT is a wrapper for all DF features.
|
|
# If only certain DF features are supported, those should be selected
|
|
# individually.
|
|
config BT_CTLR_DF_SUPPORT
|
|
bool
|
|
depends on BT_LL_SW_SPLIT && !BT_CTLR_TIFS_HW
|
|
select BT_CTLR_DF_CTE_TX_SUPPORT
|
|
select BT_CTLR_DF_ANT_SWITCH_2US_SUPPORT
|
|
select BT_CTLR_DF_ANT_SWITCH_1US_SUPPORT
|
|
select BT_CTLR_DF_CTE_RX_SUPPORT
|
|
select BT_CTLR_DF_CTE_RX_SAMPLE_1US_SUPPORT
|
|
|
|
config BT_CTLR_DF_CTE_TX_SUPPORT
|
|
bool
|
|
|
|
config BT_CTLR_DF_CTE_RX_SUPPORT
|
|
bool
|
|
|
|
config BT_CTLR_DF_CTE_RX_SAMPLE_1US_SUPPORT
|
|
bool
|
|
|
|
config BT_CTLR_DF_ANT_SWITCH_2US_SUPPORT
|
|
bool
|
|
|
|
config BT_CTLR_DF_ANT_SWITCH_1US_SUPPORT
|
|
bool
|
|
|
|
config BT_CTLR_CTEINLINE_SUPPORT
|
|
bool
|
|
|
|
menuconfig BT_CTLR_DF
|
|
bool "LE Direction Finding"
|
|
depends on BT_CTLR_DF_CTE_TX_SUPPORT || BT_CTLR_DF_CTE_RX_SUPPORT
|
|
help
|
|
Enable support for Bluetooth 5.1 Direction Finding
|
|
|
|
if BT_CTLR_DF
|
|
|
|
# Basic controller functionalities required for implementation of
|
|
# Bluetooth v5.1 Direction Finding
|
|
|
|
config BT_CTLR_DF_CTE_TX
|
|
bool "Transmission of Constant Tone Extension"
|
|
depends on BT_CTLR_DF_CTE_TX_SUPPORT
|
|
default y
|
|
help
|
|
Enable support for transmission of Constant Tone Extension in
|
|
controller.
|
|
|
|
config BT_CTLR_DF_CTE_RX_SAMPLE_1US
|
|
bool "Reception of CTE with 1us sampling slots"
|
|
depends on BT_CTLR_DF_CTE_RX_SAMPLE_1US_SUPPORT
|
|
default y
|
|
help
|
|
Enable reception of Constant Tone Extension. Process IQ sampling
|
|
during CTE reception with 1us sampling slots.
|
|
This sampling mode is optional for Direction Finding according to
|
|
Bluetooth v5.1.
|
|
|
|
config BT_CTLR_DF_ANT_SWITCH_1US
|
|
bool "Support for 1us antenna switch slots"
|
|
depends on BT_CTLR_DF_ANT_SWITCH_1US_SUPPORT
|
|
default y
|
|
help
|
|
Enable support for 1us antenna switching slots. This antenna switching
|
|
mode is optional for Direction Finding according to Bluetooth v5.1.
|
|
|
|
# Features related with Direction Finding
|
|
# BT Core spec 5.1, Vol 6, Part B, sec. 4.6 Feature Support
|
|
|
|
config BT_CTLR_DF_ANT_SWITCH_TX
|
|
bool "Antenna switching during CTE transmission (AoD) feature"
|
|
depends on BT_CTLR_DF_CTE_TX && BT_CTLR_DF_ANT_SWITCH_2US_SUPPORT
|
|
default y
|
|
help
|
|
Enable support for antenna switching during CTE transmission.
|
|
Also known as Angle of Departure mode.
|
|
|
|
config BT_CTLR_DF_ANT_SWITCH_RX
|
|
bool "Antenna switching during CTE reception (AoA) feature"
|
|
depends on BT_CTLR_DF_CTE_RX && BT_CTLR_DF_ANT_SWITCH_2US_SUPPORT
|
|
default y
|
|
help
|
|
Enable support for antenna switching during CTE reception.
|
|
Also known as Angle of Arrival mode.
|
|
|
|
config BT_CTLR_DF_CTE_RX
|
|
bool "Reception of Constant Tone Extension feature"
|
|
depends on BT_CTLR_DF_CTE_RX_SUPPORT
|
|
select BT_CTLR_CONN_RSSI if BT_CONN
|
|
default y
|
|
help
|
|
Enable support for reception of Constant Tone Extension in controller.
|
|
|
|
config BT_CTLR_DF_CONN_CTE_REQ
|
|
bool "Connection CTE Request feature"
|
|
depends on BT_CTLR_DF_CONN_CTE_RX
|
|
help
|
|
Enable support for Bluetooth v5.1 Connection CTE Request feature
|
|
in controller.
|
|
|
|
config BT_CTLR_DF_CONN_CTE_RSP
|
|
bool "Connection CTE Response feature"
|
|
depends on BT_CTLR_DF_CONN_CTE_TX
|
|
help
|
|
Enable support for Bluetooth v5.1 Connection CTE Response feature
|
|
in controller.
|
|
|
|
config BT_CTLR_DF_ADV_CTE_TX
|
|
bool "Connectionless CTE Transmitter feature"
|
|
depends on BT_CTLR_DF_CTE_TX && BT_CTLR_ADV_PERIODIC
|
|
select BT_CTLR_ADV_EXT_PDU_EXTRA_DATA_MEMORY if BT_LL_SW_SPLIT
|
|
default y
|
|
help
|
|
Enable support for Bluetooth v5.1 Connectionless CTE Transmitter
|
|
feature in controller.
|
|
|
|
config BT_CTLR_DF_SCAN_CTE_RX
|
|
bool "Connectionless CTE Receiver"
|
|
depends on BT_CTLR_DF_CTE_RX && BT_CTLR_SYNC_PERIODIC
|
|
default y
|
|
help
|
|
Enable support for Bluetooth v5.1 connectionless CTE reception
|
|
in controller.
|
|
|
|
config BT_CTLR_DF_CONN_CTE_TX
|
|
bool "Connection based CTE Transmitter"
|
|
depends on BT_CTLR_DF_CTE_TX && BT_CONN
|
|
default y
|
|
help
|
|
Enable transmission of Constant Tone Extension in
|
|
direction finding connected mode.
|
|
|
|
config BT_CTLR_DF_CONN_CTE_RX
|
|
bool "Connection based CTE Receiver"
|
|
depends on BT_CTLR_DF_CTE_RX && BT_CONN
|
|
default y
|
|
help
|
|
Enable reception and sampling of Constant Tone Extension in direction
|
|
finding connected mode.
|
|
|
|
if BT_LL_SW_SPLIT
|
|
|
|
config BT_CTLR_DF_SAMPLE_CTE_FOR_PDU_WITH_BAD_CRC
|
|
bool "Sampling of CTE for PDUs with bad CRC"
|
|
depends on BT_CTLR_DF_SCAN_CTE_RX
|
|
default y
|
|
help
|
|
Enable support for sampling of CTE for PDUs that have bad CRC.
|
|
|
|
# Customization setting to manage memory usage footprint
|
|
|
|
config BT_CTLR_DF_MAX_ANT_SW_PATTERN_LEN
|
|
int "Maximum length of antenna switch pattern"
|
|
range 2 38 if SOC_COMPATIBLE_NRF
|
|
range 2 75 if !SOC_COMPATIBLE_NRF
|
|
default 12
|
|
help
|
|
Defines maximum length of antenna switch pattern that controller
|
|
is able to store. For nRF5x-based controllers, the hardware imposes
|
|
the value is within range 2 to 38, where last value is maximum.
|
|
For general use cases Bluetooth Core 5.1 spec. required the value
|
|
to be within range 2 up to 75.
|
|
|
|
config BT_CTLR_DF_INIT_ANT_SEL_GPIOS
|
|
bool "Initialization of GPIOs responsible for antenna switching"
|
|
depends on BT_CTLR_DF_ANT_SWITCH_TX || BT_CTLR_DF_ANT_SWITCH_RX
|
|
default y
|
|
help
|
|
Enable implicit initialization of GPIOs responsible for antenna
|
|
switching during Radio initialization.
|
|
If this feature is not enabled, the Radio initialization procedure will
|
|
not initialize GPIOs pins selected to drive antenna switching.
|
|
In such case application is responsible for appropriate GPIOs
|
|
initialization.
|
|
|
|
config BT_CTLR_DF_PER_ADV_CTE_NUM_MAX
|
|
int "Maximum number of transmitted PDUs with Constant Tone Extension in connectionless mode"
|
|
depends on BT_CTLR_DF_ADV_CTE_TX && BT_CTLR_ADV_PDU_LINK
|
|
range 1 16
|
|
default 1
|
|
help
|
|
Maximum supported number of PDUs, that have Constant Tone Extension, transmitted in single
|
|
periodic advertising chain. The range is taken from BT Core spec 5.1, Vol 4 Part E
|
|
section 7.8.82 HCI_LE_Set_Connectionless_IQ_Sampling_Enable Max_Sampled_CTEs parameter.
|
|
|
|
config BT_CTLR_DF_PER_SCAN_CTE_NUM_MAX
|
|
int "Maximum number of received PDUs with Constant Tone Extension in connectionless mode"
|
|
depends on BT_CTLR_DF_SCAN_CTE_RX
|
|
range 1 16
|
|
default 16
|
|
help
|
|
Maximum supported number of PDUs, that have Constant Tone Extension, received in single
|
|
periodic advertising chain. The range is taken from BT Core spec 5.1, Vol 4 Part E
|
|
section 7.8.82 HCI_LE_Set_Connectionless_IQ_Sampling_Enable Max_Sampled_CTEs parameter.
|
|
|
|
config BT_CTLR_DF_SWITCH_OFFSET
|
|
int "Antenna switch offset relative to end of CRC"
|
|
depends on SOC_COMPATIBLE_NRF
|
|
range -2048 2047
|
|
default 0
|
|
help
|
|
Offset of start of antenna switching after end of the CRC. It is a signed value in number
|
|
of 16M cycles. Decreasing the offset value beyond the trigger of the AoA/AoD procedure
|
|
will have no effect.
|
|
|
|
config BT_CTLR_DF_SAMPLE_OFFSET_PHY_1M_SAMPLING_1US
|
|
int "CTE sampling offset relative for PHY 1M and 1US samples spacing"
|
|
depends on SOC_COMPATIBLE_NRF
|
|
range -2048 2047
|
|
default 1
|
|
help
|
|
Offset of sampling start from beginning of sampling slot. The value is a signed number
|
|
of 16M cycles relative. It is used when PHY is set to PHY 1M and sampling slot duration
|
|
is 1 us. Decreasing the offset beyond the trigger of the AoA/AoD procedure will have
|
|
no effect.
|
|
|
|
config BT_CTLR_DF_SAMPLE_OFFSET_PHY_2M_SAMPLING_1US
|
|
int "CTE sampling offset relative for PHY 1M and 1US samples spacing"
|
|
depends on SOC_COMPATIBLE_NRF
|
|
range -2048 2047
|
|
default 15
|
|
help
|
|
Offset of sampling start from beginning of sampling slot. The value is a signed number
|
|
of 16M cycles relative. It is used when PHY is set to PHY 1M and sampling slot duration
|
|
is 1 us. Decreasing the offset beyond the trigger of the AoA/AoD procedure will have
|
|
no effect.
|
|
|
|
|
|
config BT_CTLR_DF_SAMPLE_OFFSET_PHY_1M_SAMPLING_2US
|
|
int "CTE sampling offset relative for PHY 1M and 2US samples spacing"
|
|
depends on SOC_COMPATIBLE_NRF
|
|
range -2048 2047
|
|
default 6
|
|
help
|
|
Offset of sampling start from beginning of sampling slot. The value is a signed number
|
|
of 16M cycles relative. It is used when PHY is set to PHY 1M and sampling slot duration
|
|
is 2 us. Decreasing the offset beyond the trigger of the AoA/AoD procedure will have
|
|
no effect.
|
|
|
|
config BT_CTLR_DF_SAMPLE_OFFSET_PHY_2M_SAMPLING_2US
|
|
int "CTE sampling offset relative for PHY 1M and 2US samples spacing"
|
|
depends on SOC_COMPATIBLE_NRF
|
|
range -2048 2047
|
|
default 20
|
|
help
|
|
Offset of sampling start from beginning of sampling slot. The value is a signed number
|
|
of 16M cycles relative. It is used when PHY is set to PHY 1M and sampling slot duration
|
|
is 2 us. Decreasing the offset beyond the trigger of the AoA/AoD procedure will have
|
|
no effect.
|
|
|
|
config BT_CTLR_DF_DEBUG_ENABLE
|
|
bool "Bluetooth Direction Finding debug support enable"
|
|
help
|
|
This option enables debug support for the Direction Finding
|
|
implementation in controller.
|
|
|
|
config BT_CTLR_DF_PHYEND_OFFSET_COMPENSATION_ENABLE
|
|
bool
|
|
depends on BT_CTLR_DF_CTE_RX && BT_CONN && (SOC_NRF52811 || SOC_NRF52820 || SOC_NRF52833 || SOC_NRF5340_CPUNET)
|
|
default y
|
|
help
|
|
SOCs nRF52811, nRF52820, nRF52833, nRF5340 generate PHYEND event delayed when
|
|
CTEINLINECTRLEN is enabled and received PDU does not have CTEInfo field. The option
|
|
enables workaround for the delay to maintain inter frame spacing (IFS) for connection
|
|
events.
|
|
|
|
choice
|
|
prompt "IQ samples 12 bit to 8 bit conversion approach"
|
|
default BT_CTLR_DF_IQ_SAMPLES_CONVERT_2_BITS_SHIFT if !SOC_NRF5340_CPUNET
|
|
default BT_CTLR_DF_IQ_SAMPLES_CONVERT_USE_8_LSB if SOC_NRF5340_CPUNET
|
|
|
|
config BT_CTLR_DF_IQ_SAMPLES_CONVERT_4_BITS_SHIFT
|
|
bool "Conversion of IQ samples to 8 bits wide by 4 bits shift"
|
|
depends on BT_CTLR_DF_SCAN_CTE_RX || BT_CTLR_DF_CONN_CTE_RX
|
|
help
|
|
IQ samples provided by the Radio Direction Finding Extension are 12 bit wide. The
|
|
Bluetooth 5.3 Core Specification defines IQ samples to be 8 bits wide: Vol 4, Part E
|
|
sections 7.7.65.21 and 7.7.65.22. This config enables conversion of 12 bit IQ samples to
|
|
8 bits by ordinary right shift operation by 4 bits. That means there is loss in accuracy
|
|
since only the 8 MSB are used.
|
|
|
|
config BT_CTLR_DF_IQ_SAMPLES_CONVERT_2_BITS_SHIFT
|
|
bool "Conversion of IQ samples to 8 bits wide by 2 bits shift"
|
|
depends on BT_CTLR_DF_SCAN_CTE_RX || BT_CTLR_DF_CONN_CTE_RX
|
|
help
|
|
IQ samples provided by the Radio Direction Finding Extension are 12 bit wide. The
|
|
Bluetooth 5.3 Core Specification defines IQ samples to be 8 bits wide: Vol 4, Part E
|
|
sections 7.7.65.21 and 7.7.65.22. This config enables conversion of 12 bit IQ samples to
|
|
8 bits by ordinary right shift operation by 2 bits and a cast to int8_t. That means there
|
|
is a loss in accuracy. This conversion may be used only if you are sure samples will not
|
|
saturate.
|
|
|
|
config BT_CTLR_DF_IQ_SAMPLES_CONVERT_USE_8_LSB
|
|
bool "Conversion of IQ samples to 8 bits wide by use of 8 LSB"
|
|
depends on SOC_NRF5340_CPUNET && (BT_CTLR_DF_SCAN_CTE_RX || BT_CTLR_DF_CONN_CTE_RX)
|
|
help
|
|
IQ samples provided by the Radio Direction Finding Extension are 12 bit wide. The
|
|
Bluetooth 5.3 Core Specification defines IQ samples to be 8 bits wide: Vol 4, Part E
|
|
sections 7.7.65.21 and 7.7.65.22. This config enables conversion of 12 bit IQ samples to
|
|
8 bits by use of 8 least significant bits. This conversion may be used only if you are
|
|
sure actual samples are not greater than 8 bits. This prevents additional accuracy loss
|
|
due to shifting operation.
|
|
|
|
endchoice
|
|
|
|
# Vendor specifici extensions configuration
|
|
|
|
config BT_CTLR_DF_VS_CL_IQ_REPORT_16_BITS_IQ_SAMPLES
|
|
bool "Use 16 bits signed integer IQ samples in connectionless IQ reports"
|
|
depends on BT_CTLR_DF_SCAN_CTE_RX && BT_HCI_VS_EXT
|
|
select BT_HCI_VS_EVT
|
|
help
|
|
Direction Finging connectionless IQ reports provide a set of IQ samples collected during
|
|
sampling of CTE. Bluetooth 5.3 Core Specification defines IQ samples to be 8 bits signed
|
|
integer, see Vol 4, Part E section 7.7.65.21. This option enables a vendor specific
|
|
extenstion to HCI layer, so that connectionless IQ reports store samples in 16 bit signed
|
|
integer format.
|
|
|
|
config BT_CTLR_DF_VS_CONN_IQ_REPORT_16_BITS_IQ_SAMPLES
|
|
bool "Use 16 bits signed integer IQ samples in connection IQ reports"
|
|
depends on BT_CTLR_DF_CONN_CTE_RX && BT_HCI_VS_EXT
|
|
select BT_HCI_VS_EVT
|
|
help
|
|
Direction Finging connection IQ reports provide a set of IQ samples collected during
|
|
sampling of CTE. Bluetooth 5.3 Core Specification defines IQ samples to be 8 bits signed
|
|
integer, see Vol 4, Part E section 7.7.65.22. This option enables a vendor specific
|
|
extenstion to HCI layer, so that connection IQ reports store samples in 16 bit signed
|
|
integer format.
|
|
|
|
endif # BT_LL_SW_SPLIT
|
|
|
|
endif # BT_CTLR_DF
|