# Kconfig - Bluetooth Controller configuration options # # Copyright (c) 2016-2017 Nordic Semiconductor ASA # # SPDX-License-Identifier: Apache-2.0 # comment "BLE Controller support" 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" default BT_LL_SW help Select the Bluetooth Link Layer to compile. config BT_LL_SW bool "Software-based BLE Link Layer" select BT_RECV_IS_RX_THREAD select ENTROPY_GENERATOR select ENTROPY_NRF5_RNG if SOC_COMPATIBLE_NRF select ENTROPY_NRF5_BIAS_CORRECTION if SOC_COMPATIBLE_NRF help Use Zephyr software BLE Link Layer implementation. endchoice comment "BLE Controller configuration" config BT_CTLR_CRYPTO bool "Enable crypto functions in Controller" default y help Use random number generation and AES encryption support functions provided by the controller. config BT_CTLR_RX_PRIO_STACK_SIZE # Hidden option for Controller's Co-Operative high priority Rx thread # stack size. int 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_FILTER # Hidden option to enable controller whitelist feature depends on BT_LL_SW bool default y 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. if BT_LL_SW 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_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 16384 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 16384 due to implementation limitations (use of u16_t for size/length variables). 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" 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_COMPANY_ID hex "Company Id" default 0x05F1 range 0x0000 0xFFFF help Set the Bluetooth Company Identifier that will be used in the VERSION_IND PDU. The Linux Foundation's Company Identifier (0x05F1) is the default value for this option although silicon vendors and hardware manufacturers can set their own. 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_DATA_LENGTH_CLEAR && !BT_CTLR_PHY_2M_NRF 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" default y help Enable support for Bluetooth v4.1 Connection Parameter Request feature in the Controller. config BT_CTLR_LE_PING bool "LE Ping" 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 !SOC_SERIES_NRF51X default y 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_EXT_SCAN_FP bool "LE Extended Scanner Filter Policies" depends on BT_OBSERVER 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 default y if SOC_COMPATIBLE_NRF52X config BT_CTLR_DATA_LENGTH_MAX int "Maximum data length supported" depends on BT_CTLR_DATA_LENGTH default 27 range 27 251 if SOC_COMPATIBLE_NRF52X || BT_CTLR_DATA_LENGTH_CLEAR range 27 27 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 default y if SOC_COMPATIBLE_NRF52X endif # BT_CONN config BT_CTLR_CHAN_SEL_2 bool "Channel Selection Algorithm #2" default y help Enable support for Bluetooth 5.0 LE Channel Selection Algorithm #2 in the Controller. config BT_CTLR_MIN_USED_CHAN bool "Minimum Number of Used Channels" default y help Enable support for Bluetooth 5.0 Minimum Number of Used Channels Procedure in the Controller. config BT_CTLR_ADV_EXT bool "LE Advertising Extensions" select BT_CTLR_SCAN_REQ_NOTIFY select BT_CTLR_CHAN_SEL_2 default y help Enable support for Bluetooth 5.0 LE Advertising Extensions in the Controller. 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" select BT_CTLR_DTM help Enable support for Direct Test Mode over the HCI transport. 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_DATA_LENGTH_CLEAR bool "Data Length Support (Cleartext only)" depends on BT_CTLR_DATA_LENGTH && 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. if BT_CTLR_PHY config BT_CTLR_PHY_2M bool "2Mbps PHY Support" depends on !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_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_CODED bool "Coded PHY Support" depends on SOC_NRF52840 default y help Enable support for Bluetooth 5.0 Coded PHY in the Controller. endif # BT_CTLR_PHY 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. config BT_CTLR_XTAL_ADVANCED bool "Advanced event preparation" 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) 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. config BT_CTLR_RADIO_ENABLE_FAST bool "Use tTXEN/RXEN,FAST ramp-up" depends on SOC_COMPATIBLE_NRF52X 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 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 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 if BT_CONN config BT_CTLR_FAST_ENC bool "Fast Encryption Setup" depends on BT_CTLR_LE_ENC 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_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" help Enable connection RSSI measurement. endif # BT_CONN config BT_CTLR_ADV_INDICATION bool "Advertisement indications" help Generate events indicating on air advertisement events. config BT_CTLR_SCAN_REQ_NOTIFY bool "Scan Request Notifications" 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. 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" 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" 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_ASSERT_HANDLER bool "Bluetooth Controller Assertion Handler" depends on BT_HCI_RAW help This option enables an application-defined sink for the controller assertion mechanism. This must be defined in application code as void \"bt_controller_assert_handle(char \*, int)\" and will be invoked whenever the controller code encounters an unrecoverable error. 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 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 endif # BT_CTLR