choice BT_NIMBLE_MEM_ALLOC_MODE prompt "Memory allocation strategy" default BT_NIMBLE_MEM_ALLOC_MODE_INTERNAL help Allocation strategy for NimBLE host stack, essentially provides ability to allocate all required dynamic allocations from, - Internal DRAM memory only - External SPIRAM memory only - Either internal or external memory based on default malloc() behavior in ESP-IDF - Internal IRAM memory wherever applicable else internal DRAM Recommended mode here is always internal, since that is most preferred from security perspective. But if application requirement does not allow sufficient free internal memory then alternate mode can be selected. config BT_NIMBLE_MEM_ALLOC_MODE_INTERNAL bool "Internal memory" config BT_NIMBLE_MEM_ALLOC_MODE_EXTERNAL bool "External SPIRAM" depends on ESP32_SPIRAM_SUPPORT config BT_NIMBLE_MEM_ALLOC_MODE_DEFAULT bool "Default alloc mode" config BT_NIMBLE_MEM_ALLOC_MODE_IRAM_8BIT bool "Internal IRAM" depends on ESP32_IRAM_AS_8BIT_ACCESSIBLE_MEMORY help Allows to use IRAM memory region as 8bit accessible region. Every unaligned (8bit or 16bit) access will result in an exception and incur penalty of certain clock cycles per unaligned read/write. endchoice #BT_NIMBLE_MEM_ALLOC_MODE config BT_NIMBLE_MAX_CONNECTIONS int "Maximum number of concurrent connections" range 1 9 default BTDM_CTRL_BLE_MAX_CONN depends on BT_NIMBLE_ENABLED help Defines maximum number of concurrent BLE connections config BT_NIMBLE_MAX_BONDS int "Maximum number of bonds to save across reboots" default 3 depends on BT_NIMBLE_ENABLED help Defines maximum number of bonds to save for peer security and our security config BT_NIMBLE_MAX_CCCDS int "Maximum number of CCC descriptors to save across reboots" default 8 depends on BT_NIMBLE_ENABLED help Defines maximum number of CCC descriptors to save config BT_NIMBLE_L2CAP_COC_MAX_NUM int "Maximum number of connection oriented channels" range 0 9 depends on BT_NIMBLE_ENABLED default 0 help Defines maximum number of BLE Connection Oriented Channels. When set to (0), BLE COC is not compiled in choice BT_NIMBLE_PINNED_TO_CORE_CHOICE prompt "The CPU core on which NimBLE host will run" depends on BT_NIMBLE_ENABLED && !FREERTOS_UNICORE help The CPU core on which NimBLE host will run. You can choose Core 0 or Core 1. Cannot specify no-affinity config BT_NIMBLE_PINNED_TO_CORE_0 bool "Core 0 (PRO CPU)" config BT_NIMBLE_PINNED_TO_CORE_1 bool "Core 1 (APP CPU)" depends on !FREERTOS_UNICORE endchoice config BT_NIMBLE_PINNED_TO_CORE int depends on BT_NIMBLE_ENABLED default 0 if BT_NIMBLE_PINNED_TO_CORE_0 default 1 if BT_NIMBLE_PINNED_TO_CORE_1 default 0 config BT_NIMBLE_TASK_STACK_SIZE int "NimBLE Host task stack size" depends on BT_NIMBLE_ENABLED default 5120 if BLE_MESH default 4096 help This configures stack size of NimBLE host task config BT_NIMBLE_ROLE_CENTRAL bool "Enable BLE Central role" depends on BT_NIMBLE_ENABLED default y config BT_NIMBLE_ROLE_PERIPHERAL bool "Enable BLE Peripheral role" depends on BT_NIMBLE_ENABLED default y config BT_NIMBLE_ROLE_BROADCASTER bool "Enable BLE Broadcaster role" depends on BT_NIMBLE_ENABLED default y config BT_NIMBLE_ROLE_OBSERVER bool "Enable BLE Observer role" depends on BT_NIMBLE_ENABLED default y config BT_NIMBLE_NVS_PERSIST bool "Persist the BLE Bonding keys in NVS" depends on BT_NIMBLE_ENABLED default y help Enable this flag to make bonding persistent across device reboots config BT_NIMBLE_SM_LEGACY bool "Security manager legacy pairing" depends on BT_NIMBLE_ENABLED default y help Enable security manager legacy pairing config BT_NIMBLE_SM_SC bool "Security manager secure connections (4.2)" depends on BT_NIMBLE_ENABLED default y help Enable security manager secure connections config BT_NIMBLE_DEBUG bool "Enable extra runtime asserts and host debugging" default n depends on BT_NIMBLE_ENABLED help This enables extra runtime asserts and host debugging config BT_NIMBLE_SM_SC_DEBUG_KEYS bool "Use predefined public-private key pair" default n depends on BT_NIMBLE_SM_SC help If this option is enabled, SM uses predefined DH key pair as described in Core Specification, Vol. 3, Part H, 2.3.5.6.1. This allows to decrypt air traffic easily and thus should only be used for debugging. config BT_NIMBLE_SVC_GAP_DEVICE_NAME string "BLE GAP default device name" depends on BT_NIMBLE_ENABLED default "nimble" help The Device Name characteristic shall contain the name of the device as an UTF-8 string. This name can be changed by using API ble_svc_gap_device_name_set() config BT_NIMBLE_GAP_DEVICE_NAME_MAX_LEN int "Maximum length of BLE device name in octets" depends on BT_NIMBLE_ENABLED default 31 help Device Name characteristic value shall be 0 to 248 octets in length config BT_NIMBLE_ATT_PREFERRED_MTU int "Preferred MTU size in octets" depends on BT_NIMBLE_ENABLED default 256 help This is the default value of ATT MTU indicated by the device during an ATT MTU exchange. This value can be changed using API ble_att_set_preferred_mtu() config BT_NIMBLE_SVC_GAP_APPEARANCE hex "External appearance of the device" depends on BT_NIMBLE_ENABLED default 0 help Standard BLE GAP Appearance value in HEX format e.g. 0x02C0 config BT_NIMBLE_ACL_BUF_COUNT int "ACL Buffer count" depends on BT_NIMBLE_ENABLED default 12 help The number of ACL data buffers. config BT_NIMBLE_ACL_BUF_SIZE int "ACL Buffer size" depends on BT_NIMBLE_ENABLED default 255 help This is the maximum size of the data portion of HCI ACL data packets. It does not include the HCI data header (of 4 bytes) config BT_NIMBLE_HCI_EVT_BUF_SIZE int "HCI Event Buffer size" depends on BT_NIMBLE_ENABLED default 70 help This is the size of each HCI event buffer in bytes config BT_NIMBLE_HCI_EVT_HI_BUF_COUNT int "High Priority HCI Event Buffer count" depends on BT_NIMBLE_ENABLED default 30 help This is the high priority HCI events' buffer size. High-priority event buffers are for everything except advertising reports. If there are no free high-priority event buffers then host will try to allocate a low-priority buffer instead config BT_NIMBLE_HCI_EVT_LO_BUF_COUNT int "Low Priority HCI Event Buffer count" depends on BT_NIMBLE_ENABLED default 8 help This is the low priority HCI events' buffer size. Low-priority event buffers are only used for advertising reports. If there are no free low-priority event buffers, then an incoming advertising report will get dropped config BT_NIMBLE_MSYS1_BLOCK_COUNT int "MSYS_1 Block Count" depends on BT_NIMBLE_ENABLED default 12 help MSYS is a system level mbuf registry. For prepare write & prepare responses MBUFs are allocated out of msys_1 pool. For NIMBLE_MESH enabled cases, this block count is increased by 8 than user defined count. config BT_NIMBLE_HS_FLOW_CTRL bool "Enable Host Flow control" depends on BT_NIMBLE_ENABLED default y help Enable Host Flow control config BT_NIMBLE_HS_FLOW_CTRL_ITVL int "Host Flow control interval" depends on BT_NIMBLE_HS_FLOW_CTRL default 1000 help Host flow control interval in msecs config BT_NIMBLE_HS_FLOW_CTRL_THRESH int "Host Flow control threshold" depends on BT_NIMBLE_HS_FLOW_CTRL default 2 help Host flow control threshold, if the number of free buffers are at or below this threshold, send an immediate number-of-completed-packets event config BT_NIMBLE_HS_FLOW_CTRL_TX_ON_DISCONNECT bool "Host Flow control on disconnect" depends on BT_NIMBLE_HS_FLOW_CTRL default y help Enable this option to send number-of-completed-packets event to controller after disconnection config BT_NIMBLE_RPA_TIMEOUT int "RPA timeout in seconds" range 1 41400 depends on BT_NIMBLE_ENABLED default 900 help Time interval between RPA address change. This is applicable in case of Host based RPA menuconfig BT_NIMBLE_MESH bool "Enable BLE mesh functionality" select BT_NIMBLE_SM_SC depends on BT_NIMBLE_ENABLED default n help Enable BLE Mesh functionality config BT_NIMBLE_MESH_PROXY bool "Enable mesh proxy functionality" default n depends on BT_NIMBLE_MESH help Enable proxy. This is automatically set whenever NIMBLE_MESH_PB_GATT or NIMBLE_MESH_GATT_PROXY is set config BT_NIMBLE_MESH_PROV bool "Enable BLE mesh provisioning" default y depends on BT_NIMBLE_MESH help Enable mesh provisioning config BT_NIMBLE_MESH_PB_ADV bool "Enable mesh provisioning over advertising bearer" default y depends on BT_NIMBLE_MESH_PROV help Enable this option to allow the device to be provisioned over the advertising bearer config BT_NIMBLE_MESH_PB_GATT bool "Enable mesh provisioning over GATT bearer" default y select BT_NIMBLE_MESH_PROXY depends on BT_NIMBLE_MESH_PROV help Enable this option to allow the device to be provisioned over the GATT bearer config BT_NIMBLE_MESH_GATT_PROXY bool "Enable GATT Proxy functionality" default y select BT_NIMBLE_MESH_PROXY depends on BT_NIMBLE_MESH help This option enables support for the Mesh GATT Proxy Service, i.e. the ability to act as a proxy between a Mesh GATT Client and a Mesh network config BT_NIMBLE_MESH_RELAY bool "Enable mesh relay functionality" default n depends on BT_NIMBLE_MESH help Support for acting as a Mesh Relay Node config BT_NIMBLE_MESH_LOW_POWER bool "Enable mesh low power mode" default n depends on BT_NIMBLE_MESH help Enable this option to be able to act as a Low Power Node config BT_NIMBLE_MESH_FRIEND bool "Enable mesh friend functionality" default n depends on BT_NIMBLE_MESH help Enable this option to be able to act as a Friend Node config BT_NIMBLE_MESH_DEVICE_NAME string "Set mesh device name" default "nimble-mesh-node" depends on BT_NIMBLE_MESH help This value defines Bluetooth Mesh device/node name config BT_NIMBLE_CRYPTO_STACK_MBEDTLS bool "Override TinyCrypt with mbedTLS for crypto computations" default y depends on BT_NIMBLE_ENABLED select MBEDTLS_ECP_RESTARTABLE select MBEDTLS_CMAC_C help Enable this option to choose mbedTLS instead of TinyCrypt for crypto computations.