# Bluetooth Controller configuration options # Copyright (c) 2016-2017 Nordic Semiconductor ASA # SPDX-License-Identifier: Apache-2.0 comment "BLE Controller support" # The following symbols are enabled depending if the controller actually # supports the respective features. config BT_CTLR_LE_ENC_SUPPORT bool config BT_CTLR_CONN_PARAM_REQ_SUPPORT bool config BT_CTLR_EXT_REJ_IND_SUPPORT bool config BT_CTLR_SLAVE_FEAT_REQ_SUPPORT bool config BT_CTLR_DATA_LEN_UPDATE_SUPPORT bool config BT_CTLR_PRIVACY_SUPPORT bool config BT_CTLR_EXT_SCAN_FP_SUPPORT bool config BT_CTLR_PHY_UPDATE_SUPPORT bool config BT_CTLR_ADV_EXT_SUPPORT bool config BT_CTLR_CHAN_SEL_2_SUPPORT bool config BT_CTLR_MIN_USED_CHAN_SUPPORT bool config BT_CTLR_DTM_HCI_SUPPORT bool config BT_CTLR_XTAL_ADVANCED_SUPPORT bool config BT_CTLR_SCHED_ADVANCED_SUPPORT bool config BT_CTLR_TIFS_HW_SUPPORT bool config BT_CTLR bool "Bluetooth Controller" help Enables support for SoC native controller implementations. if BT_CTLR choice BT_LL_CHOICE prompt "Bluetooth Link Layer Selection" help Select the Bluetooth Link Layer to compile. config BT_LL_SW_SPLIT bool "Software-based BLE Link Layer" select BT_RECV_IS_RX_THREAD select ENTROPY_GENERATOR help Use Zephyr software BLE Link Layer ULL LLL split implementation. config BT_LL_SW_LEGACY # NOTE: This OLD architecture implementation will be deprecated, with # no further new feature development. bool "Software-based BLE Link Layer (deprecated)" select BT_RECV_IS_RX_THREAD select BT_HAS_HCI_VS select ENTROPY_GENERATOR select ENTROPY_NRF5_RNG if SOC_COMPATIBLE_NRF select ENTROPY_NRF5_BIAS_CORRECTION if SOC_COMPATIBLE_NRF depends on SOC_COMPATIBLE_NRF select BT_CTLR_LE_ENC_SUPPORT if !BT_CTLR_DATA_LENGTH_CLEAR && \ !BT_CTLR_PHY_2M_NRF select BT_CTLR_CONN_PARAM_REQ_SUPPORT select BT_CTLR_EXT_REJ_IND_SUPPORT select BT_CTLR_SLAVE_FEAT_REQ_SUPPORT select BT_CTLR_DATA_LEN_UPDATE_SUPPORT if !SOC_SERIES_NRF51X || \ BT_CTLR_DATA_LENGTH_CLEAR select BT_CTLR_PRIVACY_SUPPORT if !SOC_SERIES_NRF51X select BT_CTLR_EXT_SCAN_FP_SUPPORT select BT_CTLR_PHY_UPDATE_SUPPORT if !SOC_SERIES_NRF51X || \ BT_CTLR_PHY_2M_NRF select BT_CTLR_ADV_EXT_SUPPORT select BT_CTLR_CHAN_SEL_2_SUPPORT select BT_CTLR_MIN_USED_CHAN_SUPPORT select BT_CTLR_DTM_HCI_SUPPORT select BT_CTLR_XTAL_ADVANCED_SUPPORT select BT_CTLR_SCHED_ADVANCED_SUPPORT select BT_CTLR_TIFS_HW_SUPPORT help Use Zephyr software BLE Link Layer implementation. endchoice config BT_LLL_VENDOR_NORDIC bool "Use Nordic LLL" depends on BT_LL_SW_SPLIT && SOC_COMPATIBLE_NRF select BT_HAS_HCI_VS select ENTROPY_NRF5_RNG select ENTROPY_NRF5_BIAS_CORRECTION select BT_CTLR_LE_ENC_SUPPORT if !BT_CTLR_DATA_LENGTH_CLEAR && \ !BT_CTLR_PHY_2M_NRF select BT_CTLR_CONN_PARAM_REQ_SUPPORT select BT_CTLR_EXT_REJ_IND_SUPPORT select BT_CTLR_SLAVE_FEAT_REQ_SUPPORT select BT_CTLR_DATA_LEN_UPDATE_SUPPORT if !SOC_SERIES_NRF51X || \ BT_CTLR_DATA_LENGTH_CLEAR select BT_CTLR_PRIVACY_SUPPORT if !SOC_SERIES_NRF51X select BT_CTLR_EXT_SCAN_FP_SUPPORT select BT_CTLR_PHY_UPDATE_SUPPORT if !SOC_SERIES_NRF51X || \ BT_CTLR_PHY_2M_NRF select BT_CTLR_ADV_EXT_SUPPORT select BT_CTLR_CHAN_SEL_2_SUPPORT select BT_CTLR_MIN_USED_CHAN_SUPPORT select BT_CTLR_DTM_HCI_SUPPORT select BT_CTLR_XTAL_ADVANCED_SUPPORT select BT_CTLR_SCHED_ADVANCED_SUPPORT select BT_CTLR_TIFS_HW_SUPPORT default y help Use Nordic Lower Link Layer implementation. config BT_LLL_VENDOR_OPENISA bool "Use OpenISA LLL" depends on BT_LL_SW_SPLIT && SOC_OPENISA_RV32M1_RISCV32 select BT_HAS_HCI_VS default y help Use OpenISA Lower Link Layer implementation. comment "BLE Controller configuration" config BT_CTLR_CRYPTO bool "Enable crypto functions in Controller" default y select ENTROPY_GENERATOR help Use random number generation and AES encryption support functions provided by the controller. config BT_CTLR_RX_PRIO_STACK_SIZE # Controller's Co-Operative high priority Rx thread stack size. int "High priority Rx thread stack size" if !SOC_COMPATIBLE_NRF default 448 config BT_CTLR_RX_PRIO # Hidden option for Controller's Co-Operative high priority Rx thread # priority. int default 6 config BT_CTLR_HCI_VS_BUILD_INFO string "Zephyr HCI VS Build Info string" default "" depends on BT_HCI_VS_EXT help User-defined string that will be returned by the Zephyr VS Read Build Information command after the Zephyr version and build time. When setting this to a value different from an empty string, a space character is required at the beginning to separate it from the already included information. config BT_CTLR_DUP_FILTER_LEN int "Number of addresses in the scan duplicate filter" depends on BT_OBSERVER default 16 help Set the number of unique BLE addresses that can be filtered as duplicates while scanning. config BT_CTLR_MESH_SCAN_FILTERS int "Number of Mesh scan filters" depends on BT_HCI_MESH_EXT default 1 range 1 15 help Set the number of unique Mesh Scan Filters available as part of the Intel Mesh Vendor Specific Extensions. config BT_CTLR_MESH_SF_PATTERNS int "Number of Mesh scan filter patterns" depends on BT_HCI_MESH_EXT default 15 range 1 15 help Set the number of unique Mesh Scan Filter patterns available per Scan Filter as part of the Intel Mesh Vendor Specific Extensions. config BT_CTLR_RX_BUFFERS int "Number of Rx buffers" default 6 if BT_HCI_RAW default 1 range 1 18 help Set the number of Rx PDUs to be buffered in the controller. In a 7.5ms connection interval and 2M PHY, maximum 18 packets with L2CAP payload size of 1 byte can be received. config BT_CTLR_TX_BUFFERS int "Number of Tx buffers" default 7 if BT_HCI_RAW default 3 range 1 19 help Set the number of Tx PDUs to be queued for transmission in the controller. In a 7.5ms connection interval and 2M PHY, maximum 19 packets can be enqueued, with 18 packets with L2CAP payload size of 1 byte can be acknowledged. config BT_CTLR_TX_BUFFER_SIZE int "Tx buffer size" range 27 251 default 27 help Size of the Tx buffers and the value returned in HCI LE Read Buffer Size command response. If this size if greater than effective PDU size then controller will perform fragmentation before transmitting on the the packet on air. Maximum is set to 251 due to implementation limitations (use of u8_t for length field in PDU buffer structure). choice prompt "Tx Power" default BT_CTLR_TX_PWR_0 help Select the supported BLE Radio transmit power level in dBm. config BT_CTLR_TX_PWR_PLUS_8 bool "+8 dBm" depends on SOC_NRF52840 config BT_CTLR_TX_PWR_PLUS_7 bool "+7 dBm" depends on SOC_NRF52840 config BT_CTLR_TX_PWR_PLUS_6 bool "+6 dBm" depends on SOC_NRF52840 config BT_CTLR_TX_PWR_PLUS_5 bool "+5 dBm" depends on SOC_NRF52840 config BT_CTLR_TX_PWR_PLUS_4 bool "+4 dBm" depends on SOC_SERIES_NRF51X || SOC_COMPATIBLE_NRF52X config BT_CTLR_TX_PWR_PLUS_3 bool "+3 dBm" depends on SOC_COMPATIBLE_NRF52X config BT_CTLR_TX_PWR_PLUS_2 bool "+2 dBm" depends on SOC_NRF52840 config BT_CTLR_TX_PWR_0 bool "0 dBm" config BT_CTLR_TX_PWR_MINUS_4 bool "-4 dBm" config BT_CTLR_TX_PWR_MINUS_8 bool "-8 dBm" config BT_CTLR_TX_PWR_MINUS_12 bool "-12 dBm" config BT_CTLR_TX_PWR_MINUS_16 bool "-16 dBm" config BT_CTLR_TX_PWR_MINUS_20 bool "-20 dBm" config BT_CTLR_TX_PWR_MINUS_30 bool "-30 dBm" depends on SOC_SERIES_NRF51X config BT_CTLR_TX_PWR_MINUS_40 bool "-40 dBm" depends on SOC_COMPATIBLE_NRF52X endchoice config BT_CTLR_TX_PWR_DYNAMIC_CONTROL bool "Tx Power Dynamic Control" depends on BT_HCI_VS_EXT help Enable dynamic control of Tx power per role/connection. Provides HCI VS commands to set and get the current Tx power on an individual role/connection basis. config BT_CTLR_SETTINGS bool "Settings System" depends on BT_SETTINGS help Enable use of settings system in controller. config BT_CTLR_VERSION_SETTINGS bool "Version Settings" depends on BT_CTLR_SETTINGS help Make the controller's Company Id and Subversion Number configurable through settings system. config BT_CTLR_COMPANY_ID hex "Controller Company Id" default BT_COMPANY_ID range 0x0000 0xFFFF help Set the Bluetooth Company Identifier that will be used in the VERSION_IND PDU. Uses BT_COMPANY_ID by default, although silicon vendors and hardware manufacturers can set their own Company Identifier for the controller. The full list of Bluetooth Company Identifiers can be found here: https://www.bluetooth.com/specifications/assigned-numbers/company-identifiers config BT_CTLR_SUBVERSION_NUMBER hex "Subversion Number" default 0xFFFF range 0x0000 0xFFFF help Set the Subversion Number that will be used in VERSION_IND PDU. comment "BLE Controller features" if BT_CONN config BT_CTLR_LE_ENC bool "LE Encryption" depends on BT_CTLR_LE_ENC_SUPPORT default y help Enable support for Bluetooth v4.0 LE Encryption feature in the Controller. config BT_CTLR_CONN_PARAM_REQ bool "Connection Parameter Request" depends on BT_CTLR_CONN_PARAM_REQ_SUPPORT select BT_CTLR_EXT_REJ_IND default y help Enable support for Bluetooth v4.1 Connection Parameter Request feature in the Controller. config BT_CTLR_EXT_REJ_IND bool "Extended Reject Indication" depends on BT_CTLR_EXT_REJ_IND_SUPPORT default y help Enable support for Bluetooth v4.1 Extended Reject Indication feature in the Controller. config BT_CTLR_SLAVE_FEAT_REQ bool "Slave-initiated Features Exchange" depends on BT_CTLR_SLAVE_FEAT_REQ_SUPPORT default y help Enable support for Bluetooth v4.1 Slave-initiated Features Exchange feature in the Controller. config BT_CTLR_LE_PING bool "LE Ping" depends on BT_CTLR_LE_ENC default y help Enable support for Bluetooth v4.1 LE Ping feature in the Controller. config BT_CTLR_PRIVACY bool "LE Controller-based Privacy" depends on BT_CTLR_PRIVACY_SUPPORT default y select BT_CTLR_FILTER if (BT_LL_SW_SPLIT || BT_LL_SW_LEGACY) select BT_RPA help Enable support for Bluetooth v4.2 LE Controller-based Privacy feature in the Controller. config BT_CTLR_RL_SIZE int "LE Controller-based Privacy Resolving List size" depends on BT_CTLR_PRIVACY default 8 range 1 8 if SOC_COMPATIBLE_NRF help Set the size of the Resolving List for LE Controller-based Privacy. On nRF5x-based controllers, the hardware imposes a limit of 8 devices. config BT_CTLR_SW_DEFERRED_PRIVACY bool "LE Controller-based Software Privacy" depends on BT_CTLR_PRIVACY help Enable support for software based deferred privacy calculations. config BT_CTLR_RPA_CACHE_SIZE int "LE Controller-based Software Privacy Resolving List size" depends on BT_CTLR_SW_DEFERRED_PRIVACY default 8 range 1 64 help Set the size of the Known Unknown Resolving List for LE Controller-based Software deferred Privacy. config BT_CTLR_EXT_SCAN_FP bool "LE Extended Scanner Filter Policies" depends on BT_OBSERVER && BT_CTLR_EXT_SCAN_FP_SUPPORT default y help Enable support for Bluetooth v4.2 LE Extended Scanner Filter Policies in the Controller. config BT_CTLR_DATA_LENGTH # Hidden option to enable support for Bluetooth v4.2 LE Data Length # Update procedure in the Controller. bool depends on BT_DATA_LEN_UPDATE && BT_CTLR_DATA_LEN_UPDATE_SUPPORT default y config BT_CTLR_DATA_LENGTH_MAX int "Maximum data length supported" depends on BT_CTLR_DATA_LENGTH default 27 range 27 251 help Set the maximum data length of PDU supported in the Controller. config BT_CTLR_PHY # Hidden option to enable support for Bluetooth 5.0 PHY Update # Procedure in the Controller. bool depends on BT_PHY_UPDATE && BT_CTLR_PHY_UPDATE_SUPPORT select BT_CTLR_EXT_REJ_IND default y config BT_CTLR_MIN_USED_CHAN bool "Minimum Number of Used Channels" depends on BT_CTLR_MIN_USED_CHAN_SUPPORT default y help Enable support for Bluetooth 5.0 Minimum Number of Used Channels Procedure in the Controller. endif # BT_CONN config BT_CTLR_CHAN_SEL_2 bool "Channel Selection Algorithm #2" depends on (BT_CONN || BT_CTLR_ADV_EXT) && BT_CTLR_CHAN_SEL_2_SUPPORT default y help Enable support for Bluetooth 5.0 LE Channel Selection Algorithm #2 in the Controller. config BT_CTLR_ADV_EXT bool "LE Advertising Extensions" depends on BT_CTLR_ADV_EXT_SUPPORT select BT_CTLR_SCAN_REQ_NOTIFY select BT_CTLR_CHAN_SEL_2 help Enable support for Bluetooth 5.0 LE Advertising Extensions in the Controller. config BT_ADV_SET int "LE Advertising Extensions Sets" depends on BT_CTLR_ADV_EXT default 1 help Maximum supported advertising sets. config BT_CTLR_DTM bool help Enable support for Direct Test Mode in the Controller. config BT_CTLR_DTM_HCI bool "Direct Test Mode over HCI" depends on BT_CTLR_DTM_HCI_SUPPORT select BT_CTLR_DTM help Enable support for Direct Test Mode over the HCI transport. if BT_LL_SW_SPLIT || BT_LL_SW_LEGACY config BT_CTLR_ADVANCED_FEATURES bool "Show advanced features" help Makes advanced features visible to controller developers. menu "Advanced features" visible if BT_CTLR_ADVANCED_FEATURES config BT_CTLR_FILTER bool "Device Whitelist Support" default y help Enable support for controller device whitelist feature config BT_CTLR_DATA_LENGTH_CLEAR bool "Data Length Support (Cleartext only)" depends on SOC_SERIES_NRF51X help Enable support for Bluetooth v4.2 LE Data Length Update procedure, up to 251 byte cleartext payloads in the Controller. Encrypted connections are not supported. config BT_CTLR_PHY_2M_NRF bool "2Mbps Nordic Semiconductor PHY Support (Cleartext only)" depends on SOC_SERIES_NRF51X select BT_CTLR_PHY_2M help Enable support for Nordic Semiconductor proprietary 2Mbps PHY in the Controller. Encrypted connections are not supported. config BT_CTLR_PHY_2M bool "2Mbps PHY Support" depends on BT_CTLR_PHY && (!SOC_SERIES_NRF51X || BT_CTLR_PHY_2M_NRF) default y help Enable support for Bluetooth 5.0 2Mbps PHY in the Controller. config BT_CTLR_PHY_CODED bool "Coded PHY Support" depends on (BT_CTLR_PHY || BT_CTLR_ADV_EXT) && HAS_HW_NRF_RADIO_BLE_CODED default y help Enable support for Bluetooth 5.0 Coded PHY in the Controller. config BT_CTLR_ZLI bool "Use Zero Latency IRQs" depends on ZERO_LATENCY_IRQS && BT_LL_SW_SPLIT help Enable support for use of Zero Latency IRQ feature. Note, applications shall not use Zero Latency IRQ themselves when this option is selected, else will impact controller stability. if BT_LL_SW_LEGACY config BT_CTLR_WORKER_PRIO int "Radio and Ticker's Worker IRQ priority" range 0 3 if SOC_SERIES_NRF51X range 0 6 if SOC_COMPATIBLE_NRF52X default 0 help The interrupt priority for event preparation and radio IRQ. This value shall be less than or equal to the Ticker's Job priority value. config BT_CTLR_JOB_PRIO int "Ticker's JOB IRQ priority" range BT_CTLR_WORKER_PRIO 3 if SOC_SERIES_NRF51X range BT_CTLR_WORKER_PRIO 6 if SOC_COMPATIBLE_NRF52X default 0 help The interrupt priority for Ticker's Job (SWI4) IRQ. This value shall be greater than or equal to the Ticker's Worker IRQ priority value. endif # BT_LL_SW_LEGACY config BT_CTLR_XTAL_ADVANCED bool "Advanced event preparation" depends on BT_CTLR_XTAL_ADVANCED_SUPPORT default y help Enables advanced event preparation offset ahead of radio tx/rx, taking into account predictive processing time requirements in preparation to the event, like control procedure handling and CPU execution speeds. Crystal oscillator is retained between closely spaced consecutive radio events to reduce the overall number of crystal settling current consumptions. This feature maximizes radio utilization in an average role event timeslice when they are closely spaced by using a reduced offset between preparation and radio event. By disabling this feature, the controller will use a constant offset between the preparation and radio event. The controller will toggle crystal oscillator between two closely spaced radio events leading to higher average current due to increased number of crystal settling current consumptions. config BT_CTLR_XTAL_THRESHOLD int "Crystal shutdown threshold in uS" depends on BT_CTLR_XTAL_ADVANCED default 1500 help Configure the optimal delta in micro seconds between two consecutive radio events, event done to next preparation, below which (active clock) crystal will be retained. This value is board dependent. config BT_CTLR_SCHED_ADVANCED bool "Advanced scheduling" depends on (BT_MAX_CONN != 0) && BT_CTLR_SCHED_ADVANCED_SUPPORT default y if !(BT_PERIPHERAL && !BT_CENTRAL) help Enable non-overlapping placement of observer, initiator and master roles in timespace. Uses window offset in connection updates and uses connection parameter request in slave role to negotiate non-overlapping placement with active master roles to avoid slave roles drifting into active master roles in the local controller. This feature maximizes the average data transmission amongst active concurrent master and slave connections while other observer, initiator, master or slave roles are active in the local controller. Disabling this feature will lead to overlapping role in timespace leading to skipped events amongst active roles. if BT_LL_SW_SPLIT config BT_CTLR_LLL_PRIO int "Lower Link Layer (Radio) IRQ priority" range 0 3 if SOC_SERIES_NRF51X range 0 6 if (SOC_SERIES_NRF52X || SOC_SERIES_NRF53X) default 0 help The interrupt priority for event preparation and radio IRQ. config BT_CTLR_ULL_HIGH_PRIO int "Upper Link Layer High IRQ priority" range BT_CTLR_LLL_PRIO 3 if SOC_SERIES_NRF51X range BT_CTLR_LLL_PRIO 6 if (SOC_SERIES_NRF52X || SOC_SERIES_NRF53X) default BT_CTLR_LLL_PRIO help The interrupt priority for Ticker's Worker IRQ and Upper Link Layer higher priority functions. config BT_CTLR_ULL_LOW_PRIO int "Upper Link Layer Low IRQ priority" range BT_CTLR_ULL_HIGH_PRIO 3 if SOC_SERIES_NRF51X range BT_CTLR_ULL_HIGH_PRIO 6 if (SOC_SERIES_NRF52X || SOC_SERIES_NRF53X) default BT_CTLR_ULL_HIGH_PRIO help The interrupt priority for Ticker's Job IRQ and Upper Link Layer lower priority functions. config BT_CTLR_LOW_LAT bool "Low latency non-negotiating event preemption" default y if SOC_SERIES_NRF51X help Use low latency non-negotiating event preemption. This reduces Radio ISR latencies by the controller event scheduling framework. Consequently, this reduces on-air radio utilization due to redundant radio state switches. config BT_CTLR_LOW_LAT_ULL prompt "Low latency ULL" bool depends on BT_CTLR_LOW_LAT default y help Low latency ULL implementation that uses tailchaining instead of while loop to demux rx messages from LLL. config BT_CTLR_CONN_META prompt "Enable connection meta data extension" bool help Enables vendor specific per-connection meta data as part of the LLL connection object. config BT_CTLR_RX_PDU_META prompt "Enable RX pdu meta data" bool endif # BT_LL_SW_SPLIT config BT_CTLR_RADIO_ENABLE_FAST bool "Use tTXEN/RXEN,FAST ramp-up" depends on SOC_COMPATIBLE_NRF52X || SOC_SERIES_NRF53X default y help Enable use of fast radio ramp-up mode. config BT_CTLR_TIFS_HW bool "H/w Accelerated tIFS Trx switching" depends on !BT_CTLR_RADIO_ENABLE_FAST && BT_CTLR_TIFS_HW_SUPPORT default y help Enable use of hardware accelerated tIFS Trx switching. config BT_CTLR_SW_SWITCH_SINGLE_TIMER bool "Single TIMER tIFS Trx SW switching" depends on (!BT_CTLR_TIFS_HW) && (SOC_COMPATIBLE_NRF52X || SOC_SERIES_NRF53X) help Implement the tIFS Trx SW switch with the same TIMER instance, as the one used for BLE event timing. Requires SW switching be enabled. Using a single TIMER: (+) frees up one TIMER instance (+) removes jitter for HCTO implementation (-) introduces drifting to the absolute time inside BLE events, that increases linearly with the number of packets exchanged in the event (-) makes it impossible to use most of the pre-programmed PPI channels for the controller, resulting in 4 channels less left for other uses config BT_CTLR_PARAM_CHECK bool "Enable HCI Command Parameter checking" default y if BT_HCI_RAW help Enable code checking HCI Command Parameters. This is not needed in combined host plus controller builds, saving some code space. if BT_CONN config BT_CTLR_FAST_ENC bool "Fast Encryption Setup" depends on BT_CTLR_LE_ENC default y if BT_HCI_RAW help Enable connection encryption setup in 3 connection intervals. Peripheral will respond to Encryption Request with Encryption Response in the same connection interval, and also, will respond with Start Encryption Response PDU in the 3rd connection interval, hence completing encryption setup in 3 connection intervals. Encrypted data would be transmitted as fast as in 3rd connection interval from the connection establishment. Maximum CPU time in Radio ISR will increase if this feature is selected. config BT_CTLR_LLCP_CONN int "Number of connections with worst-case overlapping procedures" default 1 range 1 BT_MAX_CONN help Set the number connections for which worst-case buffer requirements for LLCP procedures must be met. Executing LLCP procedures on more than this number of connections simultaneously may cause instabilities. config BT_CTLR_LLID_DATA_START_EMPTY bool "Handle zero length L2CAP start frame" default y if BT_HCI_RAW help Handle zero length L2CAP start frame. config BT_CTLR_RX_ENQUEUE_HOLD bool "Procedure Complete after on-air instant" default y if BT_HCI_RAW help Hold enqueue of Procedure Complete events with instant until after the on-air instant is reached. config BT_CTLR_TX_RETRY_DISABLE bool "Disable Tx Retry" help Avoid retransmission of a PDU if peer device Nack-ed a transmission in the current connection event, close the connection event so as to save current consumption on retries (in case peer has no buffers to receive new PDUs). Enabling this will lower power consumption, but increase transmission latencies by one connection interval as the next attempt to send a PDU would happen in the next connection event instead of repeated retries in the current connection event. config BT_CTLR_CONN_RSSI bool "Connection RSSI" default y if BT_HCI_RAW help Enable connection RSSI measurement. endif # BT_CONN config BT_CTLR_ADV_INDICATION bool "Advertisement indications" depends on BT_BROADCASTER help Generate events indicating on air advertisement events. config BT_CTLR_SCAN_REQ_NOTIFY bool "Scan Request Notifications" depends on BT_BROADCASTER help Generate events notifying the on air scan requests received. config BT_CTLR_SCAN_REQ_RSSI bool "Measure Scan Request RSSI" depends on BT_CTLR_SCAN_REQ_NOTIFY help Measure RSSI of the on air scan requests received. config BT_CTLR_SCAN_INDICATION bool "Scanner indications" depends on BT_OBSERVER help Generate events indicating on air scanner events. config BT_MAYFLY_YIELD_AFTER_CALL bool "Yield from mayfly thread after first call" default y help Only process one mayfly callback per invocation (legacy behavior). If set to 'n', all pending mayflies for callee are executed before yielding config BT_TICKER_COMPATIBILITY_MODE bool "Ticker compatibility mode" default y if SOC_SERIES_NRF51X || BT_LL_SW_LEGACY help This option enables legacy ticker scheduling which defers overlapping ticker node timeouts and thereby prevents ticker interrupts during radio RX/TX. Enabling this option disables the ticker priority- and 'must expire' features. config BT_CTLR_USER_EXT prompt "Enable proprietary extensions in Controller" depends on BT_LL_SW_SPLIT bool help Catch-all for enabling proprietary event types in Controller behavior. config BT_CTLR_USER_EVT_RANGE int "Range of event constants reserved for proprietary event types" depends on BT_CTLR_USER_EXT default 5 range 0 10 help Number of event types reserved for proprietary use. The range is typically used when BT_CTLR_USER_EXT is in use. config BT_RX_USER_PDU_LEN int "Maximum supported proprietary PDU buffer length" depends on BT_CTLR_USER_EXT default 2 range 2 255 help Maximum data size for each proprietary PDU. This size includes link layer header and payload. It does not account for HCI event headers as these PDUs are assumed to not go across HCI. endmenu comment "BLE Controller hardware configuration" menuconfig BT_CTLR_GPIO_PA bool "Power Amplifier GPIO interface" depends on !SOC_SERIES_NRF51X help Enable GPIO interface to a Power Amplifier. This allows hardware designs using PA to let the Controller toggle their state based on radio activity. if BT_CTLR_GPIO_PA config BT_CTLR_GPIO_PA_PIN int "Power Amplifier GPIO pin number" range 0 47 if SOC_NRF52840 range 0 31 help GPIO Pin number connected to a Power Amplifier. config BT_CTLR_GPIO_PA_POL_INV bool "Inverted polarity for the PA pin" help Enable inverted polarity (active low) for the PA pin. config BT_CTLR_GPIO_PA_OFFSET int "Time from PA ON to Tx ready" default 5 range 0 10 help Time before Tx ready to turn on PA. endif # BT_CTLR_GPIO_PA menuconfig BT_CTLR_GPIO_LNA bool "Low Noise Amplifier GPIO interface" depends on !SOC_SERIES_NRF51X help Enable GPIO interface to a Low Noise Amplifier. This allows hardware designs using LNAs to let the Controller toggle their state based on radio activity. if BT_CTLR_GPIO_LNA config BT_CTLR_GPIO_LNA_PIN int "Low Noise Amplifier GPIO pin number" range 0 47 if SOC_NRF52840 range 0 31 help GPIO Pin number connected to a Low Noise Amplifier. config BT_CTLR_GPIO_LNA_POL_INV bool "Inverted polarity for the LNA pin" help Enable inverted polarity (active low) for the LNA pin. config BT_CTLR_GPIO_LNA_OFFSET int "Time from LNA ON to Rx ready" default 5 range 0 10 help Time before Rx ready to turn on LNA. endif # BT_CTLR_GPIO_LNA config BT_CTLR_PA_LNA_GPIOTE_CHAN # Hidden "nRF5 GPIO PA/LNA GPIOTE Channel" int depends on SOC_FAMILY_NRF && (BT_CTLR_GPIO_PA || BT_CTLR_GPIO_LNA) default 3 if PWM_NRF5_SW default 0 help Select the nRF5 GPIOTE channel to use for PA/LNA GPIO feature. comment "BLE Controller debug configuration" config BT_CTLR_PROFILE_ISR bool "Profile radio ISR" help Turn on measurement of radio ISR latency, CPU usage and generation of controller event with these profiling data. The controller event contains current, minimum and maximum ISR entry latencies; and current, minimum and maximum ISR CPU use in micro-seconds. config BT_CTLR_DEBUG_PINS bool "Bluetooth Controller Debug Pins" depends on BOARD_NRF51_PCA10028 || BOARD_NRF52_PCA10040 || BOARD_NRF52810_PCA10040 || BOARD_NRF52840_PCA10056 || BOARD_RV32M1_VEGA help Turn on debug GPIO toggling for the BLE Controller. This is useful when debugging with a logic analyzer or profiling certain sections of the code. endif # BT_LL_SW_SPLIT || BT_LL_SW_LEGACY config BT_CTLR_ASSERT_HANDLER bool "Application Defined Assertion Handler" help This option enables an application-defined sink for the controller assertion mechanism. This must be defined in application code as void \"bt_ctlr_assert_handle(char \*, int)\" and will be invoked whenever the controller code encounters an unrecoverable error. endif # BT_CTLR