| # Bluetooth LE stack configuration options |
| |
| # Copyright (c) 2016-2020 Nordic Semiconductor ASA |
| # Copyright (c) 2015-2016 Intel Corporation |
| # SPDX-License-Identifier: Apache-2.0 |
| |
| config BT_HCI_HOST |
| # Hidden option to make the conditions more intuitive |
| bool |
| default y |
| depends on !BT_HCI_RAW |
| select POLL |
| |
| |
| config BT_HCI_TX_STACK_SIZE |
| # NOTE: This value is derived from other symbols and should only be |
| # changed if required by architecture |
| int |
| prompt "HCI Tx thread stack size" if BT_HCI_TX_STACK_SIZE_WITH_PROMPT |
| default 512 if BT_H4 |
| default 512 if BT_H5 |
| default 416 if BT_SPI |
| default 940 if BT_CTLR && BT_LL_SW_SPLIT && NO_OPTIMIZATIONS |
| default 1024 if BT_CTLR && BT_LL_SW_SPLIT && BT_CENTRAL |
| default 640 if BT_CTLR && BT_LL_SW_SPLIT |
| default 512 if BT_USERCHAN |
| default 640 if BT_STM32_IPM |
| # Even if no driver is selected the following default is still |
| # needed e.g. for unit tests. This default will also server as |
| # the worst-case stack size if an out-of-tree controller is used. |
| default 1024 |
| help |
| Stack size needed for executing bt_send with specified driver. |
| NOTE: This is an advanced setting and should not be changed unless |
| absolutely necessary. To change this you must first select |
| BT_HCI_TX_STACK_SIZE_WITH_PROMPT. |
| |
| config BT_HCI_TX_STACK_SIZE_WITH_PROMPT |
| bool "Override HCI Tx thread stack size" |
| |
| config BT_HCI_ECC_STACK_SIZE |
| # NOTE: This value is derived from other symbols and should only be |
| # changed if required by architecture |
| int "HCI ECC thread stack size" |
| default 1140 |
| help |
| NOTE: This is an advanced setting and should not be changed unless |
| absolutely necessary |
| |
| config BT_HCI_TX_PRIO |
| # Hidden option for Co-Operative Tx thread priority |
| int |
| default 7 |
| |
| config BT_HCI_RESERVE |
| int |
| default 0 if BT_H4 |
| default 1 if BT_H5 |
| default 1 if BT_RPMSG |
| default 1 if BT_SPI |
| default 1 if BT_STM32_IPM |
| default 1 if BT_USERCHAN |
| default 1 if BT_ESP32 |
| # Even if no driver is selected the following default is still |
| # needed e.g. for unit tests. |
| default 0 |
| help |
| Headroom that the driver needs for sending and receiving buffers. Add a |
| new 'default' entry for each new driver. |
| |
| config BT_RECV_IS_RX_THREAD |
| # Hidden option set by the HCI driver to indicate that there's |
| # no need for the host to have its own RX thread. |
| # If this option has been enabled it is then the responsibility of the |
| # HCI driver to call bt_recv_prio from a higher priority context than |
| # bt_recv in order to avoid deadlocks. |
| # If this option is disabled then only bt_recv should be called. |
| bool |
| prompt "bt_recv is called from RX thread" if BT_NO_DRIVER |
| |
| config BT_RX_STACK_SIZE |
| int "Size of the receiving thread stack" |
| depends on BT_HCI_HOST || BT_RECV_IS_RX_THREAD |
| default 768 if BT_HCI_RAW |
| default 3092 if BT_MESH_GATT_CLIENT |
| default 2048 if BT_MESH |
| default 2048 if BT_AUDIO |
| default 2200 if BT_SETTINGS |
| default 1024 |
| help |
| Size of the receiving thread stack. This is the context from |
| which all event callbacks to the application occur. The |
| default value is sufficient for basic operation, but if the |
| application needs to do advanced things in its callbacks that |
| require extra stack space, this value can be increased to |
| accommodate for that. |
| |
| config BT_RX_PRIO |
| # Hidden option for Co-Operative Rx thread priority |
| int |
| depends on BT_HCI_HOST || BT_RECV_IS_RX_THREAD |
| default 8 |
| |
| config BT_DRIVER_RX_HIGH_PRIO |
| # Hidden option for Co-Operative HCI driver RX thread priority |
| int |
| default 6 |
| |
| menu "Bluetooth Host" |
| |
| if BT_HCI_HOST |
| |
| rsource "../mesh/Kconfig" |
| rsource "../audio/Kconfig" |
| |
| config BT_HOST_CRYPTO |
| # Hidden option that compiles in AES encryption support using TinyCrypt |
| # library if this is not provided by the controller implementation. |
| bool |
| default y if !BT_CTLR_CRYPTO |
| select TINYCRYPT |
| select TINYCRYPT_AES |
| |
| config BT_HOST_CRYPTO_PRNG |
| bool "Use Tinycrypt library for random number generation" |
| default y |
| select TINYCRYPT_SHA256 |
| select TINYCRYPT_SHA256_HMAC |
| select TINYCRYPT_SHA256_HMAC_PRNG |
| depends on BT_HOST_CRYPTO |
| help |
| When selected, will use tinycrypt library for random number generation. |
| This will consume additional ram, but may speed up the generation of random |
| numbers. |
| |
| Otherwise, random numbers will be generated through multiple HCI calls, |
| which will not consume additional resources, but may take a long time, |
| depending on the length of the random data. |
| This method is generally recommended within 16 bytes. |
| |
| config BT_SETTINGS |
| bool "Store Bluetooth state and configuration persistently" |
| depends on SETTINGS |
| select MPU_ALLOW_FLASH_WRITE if ARM_MPU |
| help |
| When selected, the Bluetooth stack will take care of storing |
| (and restoring) the Bluetooth state (e.g. pairing keys) and |
| configuration persistently in flash. |
| |
| When this option has been enabled, it's important that the |
| application makes a call to settings_load() after having done |
| all necessary initialization (e.g. calling bt_enable). The |
| reason settings_load() is handled externally to the stack, is |
| that there may be other subsystems using the settings API, in |
| which case it's more efficient to load all settings in one go, |
| instead of each subsystem doing it independently. |
| |
| if BT_SETTINGS |
| config BT_SETTINGS_CCC_LAZY_LOADING |
| bool "Load CCC values from settings when peer connects" |
| depends on BT_CONN |
| default y |
| help |
| Load Client Configuration Characteristic setting right after a bonded |
| device connects. |
| Disabling this option will increase memory usage as CCC values for all |
| bonded devices will be loaded when calling settings_load. |
| |
| config BT_SETTINGS_CCC_STORE_ON_WRITE |
| bool "Store CCC value immediately after it has been written" |
| depends on BT_CONN |
| default y |
| help |
| Store Client Configuration Characteristic value right after it has |
| been updated. If the option is disabled, the CCC is only stored on |
| disconnection. |
| |
| config BT_SETTINGS_USE_PRINTK |
| bool "Use snprintk to encode Bluetooth settings key strings" |
| depends on SETTINGS && PRINTK |
| default y |
| help |
| When selected, Bluetooth settings will use snprintk to encode |
| key strings. |
| When not selected, Bluetooth settings will use a faster builtin |
| function to encode the key string. The drawback is that if |
| printk is enabled then the program memory footprint will be larger. |
| endif # BT_SETTINGS |
| |
| config BT_WHITELIST |
| bool "DEPRECATED: Use BT_FILTER_ACCEPT_LIST instead" |
| select BT_FILTER_ACCEPT_LIST |
| |
| config BT_FILTER_ACCEPT_LIST |
| bool "Filter accept list support" |
| help |
| This option enables the filter accept list API. This takes advantage of the |
| filtering feature of a BLE controller. |
| The filter accept list is a global list and the same list is used |
| by both scanner and advertiser. The filter accept list cannot be modified while |
| it is in use. |
| |
| An Advertiser can filter which peers can connect or request scan |
| response data. |
| A scanner can filter advertisers for which it will generate |
| advertising reports. |
| Connections can be established automatically for accepted peers. |
| |
| This options deprecates the bt_le_set_auto_conn API in favor of the |
| bt_conn_create_auto_le API. |
| |
| config BT_LIM_ADV_TIMEOUT |
| int "Timeout for limited advertising in 1s units" |
| default 30 |
| range 1 180 |
| depends on BT_BROADCASTER |
| help |
| After this timeout is reached, advertisement with BT_LE_AD_LIMITED flag |
| set shall be terminated. As per BT Core Spec 5.2, Vol 3, Part C, |
| Appendix A (NORMATIVE): TIMERS AND CONSTANTS it's required to be no more |
| than 180s. |
| |
| if BT_CONN |
| |
| config BT_CONN_TX_MAX |
| int "Maximum number of pending TX buffers with a callback" |
| default BT_L2CAP_TX_BUF_COUNT |
| range BT_L2CAP_TX_BUF_COUNT 255 |
| help |
| Maximum number of pending TX buffers that have an associated |
| callback. Normally this can be left to the default value, which |
| is equal to the number of TX buffers in the stack-internal pool. |
| |
| config BT_USER_PHY_UPDATE |
| bool "User control of PHY Update Procedure" |
| depends on BT_PHY_UPDATE |
| help |
| Enable application access to initiate the PHY Update Procedure. |
| The application can also register a callback to be notified about PHY |
| changes on the connection. The current PHY info is available in the |
| connection info. |
| |
| config BT_AUTO_PHY_UPDATE |
| bool "Auto-initiate PHY Update Procedure" |
| depends on BT_PHY_UPDATE |
| default y if !BT_USER_PHY_UPDATE |
| help |
| Initiate PHY Update Procedure on connection establishment. |
| |
| Disable this if you want the PHY Update Procedure feature supported |
| but want to rely on the remote device to initiate the procedure at its |
| discretion or want to initiate manually. |
| |
| config BT_USER_DATA_LEN_UPDATE |
| bool "User control of Data Length Update Procedure" |
| depends on BT_DATA_LEN_UPDATE |
| help |
| Enable application access to initiate the Data Length Update |
| Procedure. The application can also a register callback to be notified |
| about Data Length changes on the connection. The current Data Length |
| info is available in the connection info. |
| |
| config BT_AUTO_DATA_LEN_UPDATE |
| bool "Auto-initiate Data Length Update procedure" |
| depends on BT_DATA_LEN_UPDATE |
| default y if !BT_USER_DATA_LEN_UPDATE |
| help |
| Initiate Data Length Update Procedure on connection establishment. |
| |
| Disable this if you want the Data Length Update Procedure feature |
| supported but want to rely on the remote device to initiate the |
| procedure at its discretion or want to initiate manually. |
| |
| config BT_REMOTE_INFO |
| bool "Application access to remote information" |
| help |
| Enable application access to the remote information available in the |
| stack. The remote information is retrieved once a connection has been |
| established and the application will be notified when this information |
| is available through the remote_info_available connection callback. |
| |
| config BT_SMP |
| bool "Security Manager Protocol support" |
| select TINYCRYPT |
| select TINYCRYPT_AES |
| select TINYCRYPT_AES_CMAC |
| select BT_RPA |
| select BT_ECC |
| help |
| This option enables support for the Security Manager Protocol |
| (SMP), making it possible to pair devices over LE. |
| |
| if BT_SMP |
| config BT_PRIVACY |
| bool "Privacy Feature" |
| help |
| Enable local Privacy Feature support. This makes it possible |
| to use Resolvable Private Addresses (RPAs). |
| |
| config BT_RPA_TIMEOUT |
| int "Resolvable Private Address timeout" |
| depends on BT_PRIVACY |
| default 900 |
| range 1 65535 |
| help |
| This option defines how often resolvable private address is rotated. |
| Value is provided in seconds and defaults to 900 seconds (15 minutes). |
| |
| config BT_SIGNING |
| bool "Data signing support" |
| help |
| This option enables data signing which is used for transferring |
| authenticated data in an unencrypted connection. |
| |
| config BT_SMP_APP_PAIRING_ACCEPT |
| bool "Accept or reject pairing initiative" |
| help |
| When receiving pairing request or pairing response query the |
| application whether to accept to proceed with pairing or not. This is |
| for pairing over SMP and does not affect SSP, which will continue |
| pairing without querying the application. |
| The application can return an error code, which is translated into |
| a SMP return value if the pairing is not allowed. |
| |
| config BT_SMP_SC_PAIR_ONLY |
| bool "Disable legacy pairing" |
| help |
| This option disables LE legacy pairing and forces LE secure connection |
| pairing. All Security Mode 1 levels can be used with legacy pairing |
| disabled, but pairing with devices that do not support secure |
| connections pairing will not be supported. |
| To force a higher security level use "Secure Connections Only Mode" |
| |
| config BT_SMP_SC_ONLY |
| bool "Secure Connections Only Mode" |
| select BT_SMP_SC_PAIR_ONLY |
| help |
| This option enables support for Secure Connection Only Mode. In this |
| mode device shall only use Security Mode 1 Level 4 with exception |
| for services that only require Security Mode 1 Level 1 (no security). |
| Security Mode 1 Level 4 stands for authenticated LE Secure Connections |
| pairing with encryption. Enabling this option disables legacy pairing. |
| |
| config BT_SMP_OOB_LEGACY_PAIR_ONLY |
| bool "Force Out Of Band Legacy pairing" |
| depends on !(BT_SMP_SC_PAIR_ONLY || BT_SMP_SC_ONLY) |
| help |
| This option disables Legacy and LE SC pairing and forces legacy OOB. |
| |
| config BT_SMP_DISABLE_LEGACY_JW_PASSKEY |
| bool "Forbid usage of insecure legacy pairing methods" |
| depends on !(BT_SMP_SC_PAIR_ONLY || BT_SMP_SC_ONLY || \ |
| BT_SMP_OOB_LEGACY_PAIR_ONLY) |
| help |
| This option disables Just Works and Passkey legacy pairing methods to |
| increase security. |
| |
| config BT_SMP_ALLOW_UNAUTH_OVERWRITE |
| bool "Allow unauthenticated pairing for paired device" |
| help |
| This option allows all unauthenticated pairing attempts made by the |
| peer where an unauthenticated bond already exists. |
| This would enable cases where an attacker could copy the peer device |
| address to connect and start an unauthenticated pairing procedure |
| to replace the existing bond. When this option is disabled in order |
| to create a new bond the old bond has to be explicitly deleted with |
| bt_unpair. |
| |
| config BT_SMP_USB_HCI_CTLR_WORKAROUND |
| bool "Workaround for USB HCI controller out-of-order events" |
| depends on BT_TESTING |
| help |
| This option enables support for USB HCI controllers that sometimes |
| send out-of-order HCI events and ACL Data due to using different USB |
| endpoints. |
| Enabling this option will make the central role not require the |
| encryption-change event to be received before accepting key-distribution |
| data. |
| It opens up for a potential vulnerability as the central cannot detect |
| if the keys are distributed over an encrypted link. |
| |
| config BT_FIXED_PASSKEY |
| bool "Use a fixed passkey for pairing" |
| help |
| With this option enabled, the application will be able to call the |
| bt_passkey_set() API to set a fixed passkey. If set, the |
| pairing_confirm() callback will be called for all incoming pairings. |
| |
| config BT_USE_DEBUG_KEYS |
| bool "Security Manager Debug Mode" |
| help |
| This option places Security Manager in a Debug Mode. In this mode |
| predefined Diffie-Hellman private/public key pair is used as described |
| in Core Specification Vol. 3, Part H, 2.3.5.6.1. |
| |
| WARNING: This option enables anyone to decrypt on-air traffic. |
| Use of this feature in production is strongly discouraged. |
| |
| config BT_BONDABLE |
| bool "Bondable Mode" |
| default y |
| help |
| This option enables support for Bondable Mode. In this mode, |
| Bonding flag in AuthReq of SMP Pairing Request/Response will be set |
| indicating the support for this mode. |
| |
| config BT_BONDING_REQUIRED |
| bool "Always require bonding" |
| depends on BT_BONDABLE |
| help |
| When this option is enabled remote devices are required to always |
| set the bondable flag in their pairing request. Any other kind of |
| requests will be rejected. |
| |
| config BT_STORE_DEBUG_KEYS |
| bool "Store Debug Mode bonds" |
| help |
| This option enables support for storing bonds where either of devices |
| is using the predefined Diffie-Hellman private/public key pair as |
| described in the Core Specification Vol 3, Part H, 2.3.5.6.1. |
| |
| WARNING: This option potentially enables anyone to decrypt on-air |
| traffic. |
| Use of this feature in production is strongly discouraged. |
| |
| config BT_SMP_ENFORCE_MITM |
| bool "Enforce MITM protection" |
| default y |
| help |
| With this option enabled, the Security Manager will set MITM option in |
| the Authentication Requirements Flags whenever local IO Capabilities |
| allow the generated key to be authenticated. |
| |
| config BT_OOB_DATA_FIXED |
| bool "Use a fixed random number for LESC OOB pairing" |
| depends on BT_TESTING |
| help |
| With this option enabled, the application will be able to perform LESC |
| pairing with OOB data that consists of fixed random number and confirm |
| value. |
| |
| WARNING: This option stores a hardcoded Out-of-Band value in the image. |
| Use of this feature in production is strongly discouraged. |
| |
| config BT_KEYS_OVERWRITE_OLDEST |
| bool "Overwrite the oldest key if key storage is full" |
| help |
| If a pairing attempt occurs and the key storage is full then the |
| oldest key from the set of not currently in use keys will be selected |
| and overwritten by the pairing device. |
| |
| config BT_KEYS_SAVE_AGING_COUNTER_ON_PAIRING |
| bool "Store aging counter every time a successful paring occurs" |
| depends on BT_SETTINGS && BT_KEYS_OVERWRITE_OLDEST |
| help |
| With this option enabled, aging counter will be stored in settings every |
| time a successful pairing occurs. This increases flash wear out but offers |
| a more correct finding of the oldest unused pairing info. |
| |
| config BT_SMP_MIN_ENC_KEY_SIZE |
| int |
| prompt "Minimum encryption key size accepted in octets" if !BT_SMP_SC_ONLY |
| range 7 16 |
| default 7 |
| default 16 if BT_SMP_SC_ONLY |
| help |
| This option sets the minimum encryption key size accepted during pairing. |
| |
| endif # BT_SMP |
| |
| rsource "Kconfig.l2cap" |
| rsource "Kconfig.gatt" |
| rsource "../services/Kconfig" |
| |
| config BT_MAX_PAIRED |
| int "Maximum number of paired devices" |
| default 0 if !BT_SMP |
| default 1 |
| range 0 128 |
| help |
| Maximum number of paired Bluetooth devices. The minimum (and |
| default) number is 1. |
| |
| config BT_CREATE_CONN_TIMEOUT |
| int "Timeout for pending LE Create Connection command in seconds" |
| default 3 |
| range 1 BT_RPA_TIMEOUT if BT_PRIVACY && (BT_RPA_TIMEOUT < 655) |
| range 1 655 |
| |
| config BT_CONN_PARAM_UPDATE_TIMEOUT |
| int "Peripheral connection parameter update timeout in milliseconds" |
| default 5000 |
| range 0 65535 |
| |
| help |
| The value is a timeout used by peripheral device to wait until it |
| starts the first connection parameters update procedure after a |
| connection has been established. |
| The connection parameters requested will be the parameters set by the |
| application, or the peripheral preferred connection parameters if |
| configured. |
| The default value is set to 5 seconds, to comply with the Bluetooth |
| Core specification: Core 4.2 Vol 3, Part C, 9.3.12.2: |
| "The Peripheral device should not perform a Connection Parameter |
| Update procedure within 5 seconds after establishing a connection." |
| |
| endif # BT_CONN |
| |
| if BT_OBSERVER |
| config BT_BACKGROUND_SCAN_INTERVAL |
| int "Scan interval used for background scanning in 0.625 ms units" |
| default 2048 |
| range 4 16384 |
| config BT_BACKGROUND_SCAN_WINDOW |
| int "Scan window used for background scanning in 0.625 ms units" |
| default 18 |
| range 4 16384 |
| |
| config BT_EXT_SCAN_BUF_SIZE |
| int "Maximum advertisement report size" |
| depends on BT_EXT_ADV |
| range 1 1650 |
| default 229 |
| help |
| Maximum size of an advertisement report in octets. If the advertisement |
| provided by the controller is larger than this buffer size, |
| the remaining data will be discarded. |
| |
| endif # BT_OBSERVER |
| |
| config BT_SCAN_WITH_IDENTITY |
| bool "Perform active scanning using local identity address" |
| depends on !BT_PRIVACY && (BT_CENTRAL || BT_OBSERVER) |
| help |
| Enable this if you want to perform active scanning using the local |
| identity address as the scanner address. By default the stack will |
| always use a non-resolvable private address (NRPA) in order to avoid |
| disclosing local identity information. By not scanning with the |
| identity address the scanner will receive directed advertise reports |
| for for the local identity. If this use case is required, then enable |
| this option. |
| |
| config BT_DEVICE_NAME_DYNAMIC |
| bool "Allow to set Bluetooth device name on runtime" |
| help |
| Enabling this option allows for runtime configuration of Bluetooth |
| device name. |
| |
| config BT_DEVICE_NAME_MAX |
| int "Maximum size in bytes for device name" |
| depends on BT_DEVICE_NAME_DYNAMIC |
| default 28 |
| range 2 248 |
| help |
| Bluetooth device name storage size. Storage can be up to 248 bytes |
| long (excluding NULL termination). |
| |
| config BT_DEVICE_NAME |
| string "Bluetooth device name" |
| default "Zephyr" |
| help |
| Bluetooth device name. Name can be up to 248 bytes long (excluding |
| NULL termination). Can be empty string. |
| |
| config BT_DEVICE_APPEARANCE_DYNAMIC |
| bool "Runtime Bluetooth Appearance changing" |
| help |
| Enables use of bt_set_appearance. |
| If CONFIG_BT_SETTINGS is set, the appearance is persistently stored. |
| |
| config BT_DEVICE_APPEARANCE_GATT_WRITABLE |
| bool "Allow authenticated peers to set GAP Appearance" |
| depends on BT_DEVICE_APPEARANCE_DYNAMIC |
| |
| config BT_DEVICE_APPEARANCE |
| int "Bluetooth device appearance" |
| range 0 65535 |
| default 0 |
| help |
| Bluetooth device appearance. For the list of possible values please |
| consult the following link: |
| https://www.bluetooth.com/specifications/assigned-numbers |
| |
| config BT_ID_MAX |
| int "Maximum number of local identities" |
| range 1 250 |
| default 1 |
| help |
| Maximum number of supported local identity addresses. For most |
| products this is safe to leave as the default value (1). |
| |
| config BT_DF |
| bool "Direction Finding support [EXPERIMENTAL]" |
| select EXPERIMENTAL |
| help |
| Enable support for Bluetooth 5.1 Direction Finding. |
| It will allow to: get information about antennae, configure |
| Constant Tone Extension, transmit CTE and sample incoming CTE. |
| |
| if BT_DF |
| |
| config BT_DF_CONNECTIONLESS_CTE_RX |
| bool "Support for receive of CTE in connectionless mode" |
| help |
| Enable support for reception and sampling of Constant Tone Extension |
| in connectionless mode. |
| |
| config BT_DF_CONNECTIONLESS_CTE_TX |
| bool "Support for transmission of CTE in connectionless mode" |
| help |
| Enable support for transmission of Constant Tone Extension in |
| connectionless mode. |
| |
| config BT_DF_CONNECTION_CTE_RX |
| bool "Support for receive of CTE in connection mode" |
| help |
| Enable support for reception and sampling of Constant Tone Extension |
| in connection mode. |
| |
| config BT_DF_CONNECTION_CTE_TX |
| bool "Support for transmission of CTE in connection mode" |
| help |
| Enable support for transmission of Constant Tone Extension in |
| connection mode. |
| |
| config BT_DF_CONNECTION_CTE_REQ |
| bool "Support for CTE request procedure in connection mode" |
| depends on BT_DF_CONNECTION_CTE_RX |
| help |
| Enable support for request of Constant Tone Extension in connection |
| mode. |
| |
| config BT_DF_CONNECTION_CTE_RSP |
| bool "Support for CTE request procedure in connection mode" |
| depends on BT_DF_CONNECTION_CTE_TX |
| help |
| Enable support for request of Constant Tone Extension in connection |
| mode. |
| |
| config BT_DF_CTE_RX_AOA |
| bool "Antenna switching during CTE reception (AoA) feature" |
| depends on BT_DF_CONNECTIONLESS_CTE_RX || BT_DF_CONNECTION_CTE_RX |
| default y |
| help |
| Enable support for antenna switching during CTE reception. |
| Also known as Angle of Arrival mode. |
| |
| config BT_DF_CTE_TX_AOD |
| bool "Antenna switching during CTE transmission (AoD) feature" |
| depends on BT_DF_CONNECTIONLESS_CTE_TX || BT_DF_CONNECTION_CTE_TX |
| default y |
| help |
| Enable support for antenna switching during CTE transmission. |
| Also known as Angle of Departure mode. |
| |
| config BT_DEBUG_DF |
| bool "Bluetooth Direction Finding debug" |
| help |
| This option enables debug support for Bluetooth Direction Finding |
| |
| endif # BT_DF |
| endif # BT_HCI_HOST |
| |
| config BT_ECC |
| bool "ECDH key generation support" |
| default y if BT_MESH_PROV || (BT_SMP && !BT_SMP_OOB_LEGACY_PAIR_ONLY) |
| help |
| This option adds support for ECDH HCI commands. |
| |
| config BT_TINYCRYPT_ECC |
| bool "Emulate ECDH in the Host using TinyCrypt library" |
| select TINYCRYPT |
| select TINYCRYPT_ECC_DH |
| depends on BT_ECC && (BT_HCI_RAW || BT_HCI_HOST) |
| default y if BT_CTLR && !BT_CTLR_ECDH |
| help |
| If this option is set TinyCrypt library is used for emulating the |
| ECDH HCI commands and events needed by e.g. LE Secure Connections. |
| In builds including the BLE Host, if not set the controller crypto is |
| used for ECDH and if the controller doesn't support the required HCI |
| commands the LE Secure Connections support will be disabled. |
| In builds including the HCI Raw interface and the BLE Controller, this |
| option injects support for the 2 HCI commands required for LE Secure |
| Connections so that Hosts can make use of those. The option defaults |
| to enabled for a combined build with Zephyr's own controller, since it |
| does not have any special ECC support itself (at least not currently). |
| |
| config BT_HOST_CCM |
| bool "Host side AES-CCM module" |
| help |
| Enables the software based AES-CCM engine in the host. Will use the |
| controller's AES encryption functions if available, or BT_HOST_CRYPTO |
| otherwise. |
| |
| config BT_PER_ADV_SYNC_BUF_SIZE |
| int "Maximum periodic advertising report size" |
| depends on BT_PER_ADV_SYNC |
| range 0 1650 |
| default 0 |
| help |
| Maximum size of a fragmented periodic advertising report. If the periodic |
| advertising report provided by the controller is fragmented and larger |
| than this buffer size, then the data will be discarded. |
| Unfragmented reports are forwarded as they are received. |
| |
| if BT_DEBUG |
| config BT_DEBUG_SETTINGS |
| bool "Bluetooth storage debug" |
| depends on BT_SETTINGS |
| help |
| This option enables debug support for Bluetooth storage. |
| |
| config BT_DEBUG_HCI_CORE |
| bool "Bluetooth HCI core debug" |
| help |
| This option enables debug support for Bluetooth HCI |
| core. |
| |
| config BT_DEBUG_CONN |
| bool "Bluetooth connection debug" |
| depends on BT_CONN || BT_ISO |
| help |
| This option enables debug support for Bluetooth |
| connection handling. |
| |
| config BT_DEBUG_ISO |
| bool "ISO channel debug" |
| help |
| Use this option to enable ISO channels debug logs for the |
| Bluetooth Audio functionality. |
| |
| config BT_DEBUG_KEYS |
| bool "Bluetooth security keys debug" |
| depends on BT_HCI_HOST |
| depends on BT_SMP |
| help |
| This option enables debug support for the handling of |
| Bluetooth security keys. |
| |
| WARNING: This option prints out private security keys such as |
| the Long Term Key. |
| Use of this feature in production is strongly discouraged. |
| |
| config BT_DEBUG_SMP |
| bool "Bluetooth Security Manager Protocol (SMP) debug" |
| depends on BT_HCI_HOST |
| depends on BT_SMP |
| help |
| This option enables debug support for the Bluetooth |
| Security Manager Protocol (SMP). |
| |
| WARNING: This option prints out private security keys such as |
| the Long Term Key. |
| Use of this feature in production is strongly discouraged. |
| |
| config BT_SMP_SELFTEST |
| bool "Bluetooth SMP self tests executed on init" |
| depends on BT_DEBUG_SMP |
| help |
| This option enables SMP self-tests executed on startup |
| to verify security and crypto functions. |
| |
| config BT_SMP_FORCE_BREDR |
| bool "Force Bluetooth SMP over BR/EDR" |
| depends on BT_DEBUG_SMP |
| help |
| This option enables SMP over BR/EDR even if controller is not |
| supporting BR/EDR Secure Connections. This option is solely for |
| testing and should never be enabled on production devices. |
| |
| config BT_DEBUG_RFCOMM |
| bool "Bluetooth RFCOMM debug" |
| depends on BT_RFCOMM |
| help |
| This option enables debug support for the Bluetooth |
| RFCOMM layer. |
| |
| config BT_DEBUG_HFP_HF |
| bool "Bluetooth Hands Free Profile (HFP) debug" |
| depends on BT_HFP_HF |
| help |
| This option enables debug support for the Bluetooth |
| Hands Free Profile (HFP). |
| |
| config BT_DEBUG_AVDTP |
| bool "Bluetooth AVDTP debug" |
| depends on BT_AVDTP |
| help |
| This option enables debug support for the Bluetooth AVDTP. |
| |
| config BT_DEBUG_A2DP |
| bool "Bluetooth A2DP debug" |
| depends on BT_A2DP |
| help |
| This option enables debug support for the Bluetooth |
| A2DP profile. |
| |
| config BT_DEBUG_SDP |
| bool "Bluetooth Service Discovery Protocol (SDP) debug" |
| depends on BT_BREDR |
| help |
| This option enables debug support for the Bluetooth |
| Service Discovery Protocol (SDP). |
| |
| config BT_DEBUG_SERVICE |
| bool "Bluetooth Services debug" |
| depends on BT_CONN |
| help |
| This option enables debug support for the Bluetooth |
| Services. |
| |
| endif # BT_DEBUG |
| |
| config BT_LOG_SNIFFER_INFO |
| bool "Bluetooth log information for sniffer" |
| help |
| This option enables the Bluetooth stack to log information such as |
| DH private key and LTK keys, which can be used by sniffers to decrypt |
| the connection without the use of Debug keys. |
| |
| WARNING: This option prints out private security keys such as |
| the Long Term Key. |
| Use of this feature in production is strongly discouraged |
| |
| config BT_TESTING |
| bool "Bluetooth Testing" |
| help |
| This option enables custom Bluetooth testing interface. |
| Shall only be used for testing purposes. |
| |
| config BT_CONN_DISABLE_SECURITY |
| bool "Disable security" |
| depends on BT_TESTING |
| help |
| This option disables security checks for incoming requests enabling |
| to test accessing GATT attributes and L2CAP channels that would |
| otherwise require encryption/authentication in order to be accessed. |
| |
| WARNING: This option enables anyone to snoop on-air traffic. |
| Use of this feature in production is strongly discouraged. |
| |
| config BT_BREDR |
| bool "Bluetooth BR/EDR support [EXPERIMENTAL]" |
| depends on BT_HCI_HOST |
| select BT_PERIPHERAL |
| select BT_CENTRAL |
| select BT_SMP |
| select BT_L2CAP_DYNAMIC_CHANNEL |
| select EXPERIMENTAL |
| help |
| This option enables Bluetooth BR/EDR support |
| |
| if BT_BREDR |
| config BT_MAX_SCO_CONN |
| int "Maximum number of simultaneous SCO connections" |
| default 1 |
| range 1 3 |
| help |
| Maximum number of simultaneous Bluetooth synchronous connections |
| supported. The minimum (and default) number is 1. |
| |
| config BT_RFCOMM |
| bool "Bluetooth RFCOMM protocol support [EXPERIMENTAL]" |
| select EXPERIMENTAL |
| help |
| This option enables Bluetooth RFCOMM support |
| |
| config BT_RFCOMM_L2CAP_MTU |
| int "L2CAP MTU for RFCOMM frames" |
| depends on BT_RFCOMM |
| # RX MTU will be truncated to account for the L2CAP PDU header. |
| default BT_BUF_ACL_RX_SIZE |
| range 23 32767 |
| help |
| Maximum size of L2CAP PDU for RFCOMM frames. |
| |
| config BT_HFP_HF |
| bool "Bluetooth Handsfree profile HF Role support [EXPERIMENTAL]" |
| depends on PRINTK |
| select BT_RFCOMM |
| select EXPERIMENTAL |
| help |
| This option enables Bluetooth HF support |
| |
| config BT_AVDTP |
| bool "Bluetooth AVDTP protocol support [EXPERIMENTAL]" |
| select EXPERIMENTAL |
| help |
| This option enables Bluetooth AVDTP support |
| |
| config BT_A2DP |
| bool "Bluetooth A2DP Profile [EXPERIMENTAL]" |
| select BT_AVDTP |
| select EXPERIMENTAL |
| help |
| This option enables the A2DP profile |
| |
| config BT_PAGE_TIMEOUT |
| hex "Bluetooth Page Timeout" |
| default 0x2000 |
| range 0x0001 0xffff |
| help |
| This option sets the page timeout value. Value is selected as |
| (N * 0.625) ms. |
| |
| endif # BT_BREDR |
| |
| config BT_HCI_VS_EVT_USER |
| bool "User Vendor-Specific event handling" |
| help |
| Enable registering a callback for delegating to the user the handling of |
| VS events that are not known to the stack |
| |
| endmenu |
