esp-idf/components/bt/controller/esp32c3/Kconfig.in

config BT_CTRL_MODE_EFF
    int
    default 1

config BT_CTRL_BLE_MAX_ACT
    int "BLE Max Instances"
    default 6
    range 1 10
    help
        BLE maximum activities of bluetooth controller，both of connections,
        scan , sync and adv(periodic adv, multi-adv). Each instance needs to
        consume 828 bytes, you can save RAM by modifying the instance value
        according to actual needs.

config BT_CTRL_BLE_MAX_ACT_EFF
    int
    default BT_CTRL_BLE_MAX_ACT
    default 0

config BT_CTRL_BLE_STATIC_ACL_TX_BUF_NB
    int "BLE static ACL TX buffer numbers"
    range 0 12
    default 0
    help
        BLE ACL buffer have two methods to be allocated. One is persistent allocating
        (alloate when controller initialise, never free until controller de-initialise)
        another is dynamically allocating (allocate before TX and free after TX).

config BT_CTRL_PINNED_TO_CORE
    int
    default 0

choice BT_CTRL_HCI_MODE_CHOICE
    prompt "HCI mode"
    help
        Specify HCI mode as VHCI or UART(H4)

    config BT_CTRL_HCI_MODE_VHCI
        bool "VHCI"
        help
            Normal option. Mostly, choose this VHCI when bluetooth host run on ESP32C3, too.

    config BT_CTRL_HCI_MODE_UART_H4
        bool "UART(H4)"
        help
            If use external bluetooth host which run on other hardware and use UART as the HCI interface,
            choose this option.
endchoice

config BT_CTRL_HCI_TL
    int
    default 0 if BT_CTRL_HCI_MODE_UART_H4
    default 1 if BT_CTRL_HCI_M0DE_VHCI
    default 1
    help
        HCI mode as VHCI or UART(H4)

config BT_CTRL_ADV_DUP_FILT_MAX
    int "The maxinum number of 5.0 extend duplicate scan filter"
    range 1 500
    default 30
    help
        The maxinum number of suplicate scan filter

config BT_CTRL_HW_CCA
    bool "HW CCA check enable"
    default n
    help
        It enables HW CCA feature in controller

config BT_CTRL_HW_CCA_VAL
    int "CCA threshold value"
    range 20 60
    default 20
    help
        It is the threshold value of HW CCA, if the value is 30, it means CCA threshold is -30 dBm.

config BT_CTRL_HW_CCA_EFF
    int
    default 1 if BT_CTRL_HW_CCA
    default 0
    help
        If other devices are sending packets in the air and the signal is strong,
        the packet hw to be sent this time is cancelled.

choice BT_CTRL_CE_LENGTH_TYPE
    prompt "Connection event length determination method"
    help
        Specify connection event length determination

    config BT_CTRL_CE_LENGTH_TYPE_ORIG
        bool "ORIGINAL"
    config BT_CTRL_CE_LENGTH_TYPE_CE
        bool "Use CE parameter for HCI command"
    config BT_CTRL_CE_LENGTH_TYPE_SD
        bool "Use Espressif self-defined method"
endchoice

config BT_CTRL_CE_LENGTH_TYPE_EFF
    int
    default 0 if BT_CTRL_CE_LENGTH_TYPE_ORIG
    default 1 if BT_CTRL_CE_LENGTH_TYPE_CE
    default 2 if BT_CTRL_CE_LENGTH_TYPE_SD

choice BT_CTRL_TX_ANTENNA_INDEX
    prompt "default Tx anntena used"
    help
        Specify default Tx antenna used for bluetooth

    config BT_CTRL_TX_ANTENNA_INDEX_0
        bool "Antenna 0"
    config BT_CTRL_TX_ANTENNA_INDEX_1
        bool "Antenna 1"
endchoice

config BT_CTRL_TX_ANTENNA_INDEX_EFF
    int
    default 0 if BT_CTRL_TX_ANTENNA_INDEX_0
    default 1 if BT_CTRL_TX_ANTENNA_INDEX_1

choice BT_CTRL_RX_ANTENNA_INDEX
    prompt "default Rx anntena used"
    help
        Specify default Rx antenna used for bluetooth

    config BT_CTRL_RX_ANTENNA_INDEX_0
        bool "Antenna 0"
    config BT_CTRL_RX_ANTENNA_INDEX_1
        bool "Antenna 1"
endchoice

config BT_CTRL_RX_ANTENNA_INDEX_EFF
    int
    default 0 if BT_CTRL_RX_ANTENNA_INDEX_0
    default 1 if BT_CTRL_RX_ANTENNA_INDEX_1

choice BT_CTRL_DFT_TX_POWER_LEVEL
    prompt "BLE default Tx power level"
    default BT_CTRL_DFT_TX_POWER_LEVEL_P9
    help
        Specify default Tx power level

    config BT_CTRL_DFT_TX_POWER_LEVEL_N24
        bool "-24dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_N21
        bool "-21dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_N18
        bool "-18dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_N15
        bool "-15dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_N12
        bool "-12dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_N9
        bool "-9dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_N6
        bool "-6dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_N3
        bool "-3dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_N0
        bool "0dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_P3
        bool "+3dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_P6
        bool "+6dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_P9
        bool "+9dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_P12
        bool "+12dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_P15
        bool "+15dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_P18
        bool "+18dBm"
    config BT_CTRL_DFT_TX_POWER_LEVEL_P21
        bool "+21dBm"
endchoice

config BT_CTRL_DFT_TX_POWER_LEVEL_EFF
    int
    default 0 if BT_CTRL_DFT_TX_POWER_LEVEL_N24
    default 1 if BT_CTRL_DFT_TX_POWER_LEVEL_N21
    default 2 if BT_CTRL_DFT_TX_POWER_LEVEL_N18
    default 3 if BT_CTRL_DFT_TX_POWER_LEVEL_N15
    default 4 if BT_CTRL_DFT_TX_POWER_LEVEL_N12
    default 5 if BT_CTRL_DFT_TX_POWER_LEVEL_N9
    default 6 if BT_CTRL_DFT_TX_POWER_LEVEL_N6
    default 7 if BT_CTRL_DFT_TX_POWER_LEVEL_N3
    default 8 if BT_CTRL_DFT_TX_POWER_LEVEL_N0
    default 9 if BT_CTRL_DFT_TX_POWER_LEVEL_P3
    default 10 if BT_CTRL_DFT_TX_POWER_LEVEL_P6
    default 11 if BT_CTRL_DFT_TX_POWER_LEVEL_P9
    default 12 if BT_CTRL_DFT_TX_POWER_LEVEL_P12
    default 13 if BT_CTRL_DFT_TX_POWER_LEVEL_P15
    default 14 if BT_CTRL_DFT_TX_POWER_LEVEL_P18
    default 15 if BT_CTRL_DFT_TX_POWER_LEVEL_P21
    default 0

config BT_CTRL_BLE_ADV_REPORT_FLOW_CTRL_SUPP
    bool "BLE adv report flow control supported"
    default y
    help
        The function is mainly used to enable flow control for advertising reports. When it is enabled,
        advertising reports will be discarded by the controller if the number of unprocessed advertising
        reports exceeds the size of BLE adv report flow control.

config BT_CTRL_BLE_ADV_REPORT_FLOW_CTRL_NUM
    int "BLE adv report flow control number"
    depends on BT_CTRL_BLE_ADV_REPORT_FLOW_CTRL_SUPP
    range 50 1000
    default 100
    help
        The number of unprocessed advertising report that bluetooth host can save.If you set
        `BT_CTRL_BLE_ADV_REPORT_FLOW_CTRL_NUM` to a small value, this may cause adv packets lost.
        If you set `BT_CTRL_BLE_ADV_REPORT_FLOW_CTRL_NUM` to a large value, bluetooth host may cache a
        lot of adv packets and this may cause system memory run out. For example, if you set
        it to 50, the maximum memory consumed by host is 35 * 50 bytes. Please set
        `BT_CTRL_BLE_ADV_REPORT_FLOW_CTRL_NUM` according to your system free memory and handle adv
        packets as fast as possible, otherwise it will cause adv packets lost.

config BT_CTRL_BLE_ADV_REPORT_DISCARD_THRSHOLD
    int "BLE adv lost event threshold value"
    depends on BT_CTRL_BLE_ADV_REPORT_FLOW_CTRL_SUPP
    range 1 1000
    default 20
    help
        When adv report flow control is enabled, The ADV lost event will be generated when the number
        of ADV packets lost in the controller reaches this threshold. It is better to set a larger value.
        If you set `BT_CTRL_BLE_ADV_REPORT_DISCARD_THRSHOLD` to a small value or printf every adv lost event, it
        may cause adv packets lost more.

config BT_CTRL_BLE_SCAN_DUPL
    bool "BLE Scan Duplicate Options"
    default y
    help
        This select enables parameters setting of BLE scan duplicate.

choice BT_CTRL_SCAN_DUPL_TYPE
    prompt "Scan Duplicate Type"
    default BT_CTRL_SCAN_DUPL_TYPE_DEVICE
    depends on BT_CTRL_BLE_SCAN_DUPL
    help
        Scan duplicate have three ways. one is "Scan Duplicate By Device Address", This way is to use
        advertiser address filtering. The adv packet of the same address is only allowed to be reported once.
        Another way is "Scan Duplicate By Device Address And Advertising Data". This way is to use advertising
        data and device address filtering. All different adv packets with the same address are allowed to be
        reported. The last way is "Scan Duplicate By Advertising Data". This way is to use advertising data
        filtering. All same advertising data only allow to be reported once even though they are from
        different devices.

    config BT_CTRL_SCAN_DUPL_TYPE_DEVICE
        bool "Scan Duplicate By Device Address"
        help
            This way is to use advertiser address filtering. The adv packet of the same address is only
            allowed to be reported once

    config BT_CTRL_SCAN_DUPL_TYPE_DATA
        bool "Scan Duplicate By Advertising Data"
        help
            This way is to use advertising data filtering. All same advertising data only allow to be reported
            once even though they are from different devices.

    config BT_CTRL_SCAN_DUPL_TYPE_DATA_DEVICE
        bool "Scan Duplicate By Device Address And Advertising Data"
        help
            This way is to use advertising data and device address filtering. All different adv packets with
            the same address are allowed to be reported.
endchoice

config BT_CTRL_SCAN_DUPL_TYPE
    int
    depends on BT_CTRL_BLE_SCAN_DUPL
    default 0 if BT_CTRL_SCAN_DUPL_TYPE_DEVICE
    default 1 if BT_CTRL_SCAN_DUPL_TYPE_DATA
    default 2 if BT_CTRL_SCAN_DUPL_TYPE_DATA_DEVICE
    default 0

config BT_CTRL_SCAN_DUPL_CACHE_SIZE
    int "Maximum number of devices in scan duplicate filter"
    depends on BT_CTRL_BLE_SCAN_DUPL
    range 10 1000
    default 100
    help
        Maximum number of devices which can be recorded in scan duplicate filter.
        When the maximum amount of device in the filter is reached, the cache will be refreshed.

config BT_CTRL_DUPL_SCAN_CACHE_REFRESH_PERIOD
    int "Duplicate scan list refresh period (seconds)"
    depends on BT_CTRL_BLE_SCAN_DUPL
    range 0 1000
    default 0
    help
        If the period value is non-zero, the controller will periodically clear the device information
        stored in the scan duuplicate filter. If it is 0, the scan duuplicate filter will not be cleared
        until the scanning is disabled. Duplicate advertisements for this period should not be sent to the
        Host in advertising report events.
        There are two scenarios where the ADV packet will be repeatedly reported:
        1. The duplicate scan cache is full, the controller will delete the oldest device information and
        add new device information.
        2. When the refresh period is up, the controller will clear all device information and start filtering
        again.

config BT_CTRL_BLE_MESH_SCAN_DUPL_EN
    bool "Special duplicate scan mechanism for BLE Mesh scan"
    depends on BT_CTRL_BLE_SCAN_DUPL
    default n
    help
        This enables the BLE scan duplicate for special BLE Mesh scan.

config BT_CTRL_MESH_DUPL_SCAN_CACHE_SIZE
    int "Maximum number of Mesh adv packets in scan duplicate filter"
    depends on BT_CTRL_BLE_MESH_SCAN_DUPL_EN
    range 10 1000
    default 100
    help
        Maximum number of adv packets which can be recorded in duplicate scan cache for BLE Mesh.
        When the maximum amount of device in the filter is reached, the cache will be refreshed.

choice BT_CTRL_COEX_PHY_CODED_TX_RX_TLIM
    prompt "Coexistence: limit on MAX Tx/Rx time for coded-PHY connection"
    default BT_CTRL_COEX_PHY_CODED_TX_RX_TLIM_DIS
    depends on ESP32_WIFI_SW_COEXIST_ENABLE
    help
        When using PHY-Coded in BLE connection, limitation on max tx/rx time can be applied to
        better avoid dramatic performance deterioration of Wi-Fi.

    config BT_CTRL_COEX_PHY_CODED_TX_RX_TLIM_EN
        bool "Force Enable"
        help
            Always enable the limitation on max tx/rx time for Coded-PHY connection

    config BT_CTRL_COEX_PHY_CODED_TX_RX_TLIM_DIS
        bool "Force Disable"
        help
            Disable the limitation on max tx/rx time for Coded-PHY connection
endchoice

config BT_CTRL_COEX_PHY_CODED_TX_RX_TLIM_EFF
    int
    default 0 if (!ESP32_WIFI_SW_COEXIST_ENABLE)
    default 1 if BT_CTRL_COEX_PHY_CODED_TX_RX_TLIM_EN
    default 0 if BT_CTRL_COEX_PHY_CODED_TX_RX_TLIM_DIS

menu "MODEM SLEEP Options"
    visible if BT_ENABLED

    config BT_CTRL_MODEM_SLEEP
        bool "Bluetooth modem sleep"
        depends on !BT_CTRL_HCI_MODE_UART_H4
        default n
        help
            Enable/disable bluetooth controller low power mode.
            Modem sleep is not supported to be used with UART HCI.

    config BT_CTRL_MODEM_SLEEP_MODE_1
        bool "Bluetooth Modem sleep Mode 1"
        depends on BT_CTRL_MODEM_SLEEP
        default y
        help
            Mode 1 is the currently supported sleep mode. In this mode,
            bluetooth controller sleeps between and BLE events. A low
            power clock is used to maintain bluetooth reference clock.

    choice BT_CTRL_LOW_POWER_CLOCK
        prompt "Bluetooth low power clock"
        depends on BT_CTRL_MODEM_SLEEP_MODE_1
        help
            Select the low power clock source for bluetooth controller

        config BT_CTRL_LPCLK_SEL_MAIN_XTAL
            bool "Main crystal"
            help
                Main crystal can be used as low power clock for bluetooth modem sleep. If this option is
                selected, bluetooth modem sleep can work under Dynamic Frequency Scaling(DFS) enabled, and
                bluetooth can work under light sleep enabled. Main crystal has a relatively better performance
                than other bluetooth low power clock sources.
        config BT_CTRL_LPCLK_SEL_EXT_32K_XTAL
            bool "External 32kHz crystal"
            depends on ESP32C3_RTC_CLK_SRC_EXT_CRYS
            help
                External 32kHz crystal has a nominal frequency of 32.768kHz and provides good frequency
                stability. If used as Bluetooth low power clock, External 32kHz can support Bluetooth
                modem sleep to be used with both DFS and light sleep.

        config BT_CTRL_LPCLK_SEL_RTC_SLOW
            bool "Internal 150kHz RC oscillator"
            depends on ESP32C3_RTC_CLK_SRC_INT_RC
            help
                Internal 150kHz RC oscillator. The accuracy of this clock is a lot larger than 500ppm which is required
                in Bluetooth communication, so don't select this option in scenarios such as BLE connection state.
    endchoice

    config BT_CTRL_MAIN_XTAL_PU_DURING_LIGHT_SLEEP
        bool "power up main XTAL during light sleep"
        depends on (BT_CTRL_LPCLK_SEL_MAIN_XTAL || BT_CTRL_LPCLK_SEL_EXT_32K_XTAL) && FREERTOS_USE_TICKLESS_IDLE
        default n
        help
            If this option is selected, the main crystal will power up during light sleep when the low power clock
            selects an external 32kHz crystal but the external 32kHz crystal does not exist or the low power clock
            selects the main crystal.


endmenu

config BT_CTRL_SLEEP_MODE_EFF
    int
    default 1 if BT_CTRL_MODEM_SLEEP_MODE_1
    default 0

config BT_CTRL_SLEEP_CLOCK_EFF
    int
    default 1 if BT_CTRL_LPCLK_SEL_MAIN_XTAL
    default 2 if BT_CTRL_LPCLK_SEL_EXT_32K_XTAL
    default 3 if BT_CTRL_LPCLK_SEL_RTC_SLOW

    default 0

config BT_CTRL_HCI_TL_EFF
    int
    default 0 if BT_CTRL_HCI_MODE_UART_H4
    default 1 if BT_CTRL_HCI_M0DE_VHCI
    default 1

config BT_CTRL_AGC_RECORRECT_EN
    bool "Enable HW AGC recorrect"
    default n
    help
        Enable uncoded phy AGC recorrect

config BT_CTRL_CODED_AGC_RECORRECT_EN
    bool "Enable coded phy AGC recorrect"
    depends on BT_CTRL_AGC_RECORRECT_EN
    default n
    help
        Enable coded phy AGC recorrect

config BT_CTRL_SCAN_BACKOFF_UPPERLIMITMAX
    bool "Disable active scan backoff"
    default n
    help
        Disable active scan backoff. The bluetooth spec requires that scanners should run a backoff procedure to
        minimize collision of scan request PDUs from nultiple scanners. If scan backoff is disabled, in active
        scanning, scan request PDU will be sent every time when HW receives scannable ADV PDU.