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esp-idf/components/bt/controller/esp32/Kconfig.in

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choice BTDM_CTRL_MODE
prompt "Bluetooth controller mode (BR/EDR/BLE/DUALMODE)"
help
Specify the bluetooth controller mode (BR/EDR, BLE or dual mode).
config BTDM_CTRL_MODE_BLE_ONLY
bool "BLE Only"
config BTDM_CTRL_MODE_BR_EDR_ONLY
bool "BR/EDR Only"
config BTDM_CTRL_MODE_BTDM
bool "Bluetooth Dual Mode"
endchoice
config BTDM_CTRL_BLE_MAX_CONN
int "BLE Max Connections"
depends on BTDM_CTRL_MODE_BLE_ONLY || BTDM_CTRL_MODE_BTDM
default 3
range 1 9
help
BLE maximum connections of bluetooth controller.
Each connection uses 1KB static DRAM whenever the BT controller is enabled.
config BTDM_CTRL_BR_EDR_MAX_ACL_CONN
int "BR/EDR ACL Max Connections"
depends on BTDM_CTRL_MODE_BR_EDR_ONLY || BTDM_CTRL_MODE_BTDM
default 2
range 1 7
help
BR/EDR ACL maximum connections of bluetooth controller.
Each connection uses 1.2 KB DRAM whenever the BT controller is enabled.
config BTDM_CTRL_BR_EDR_MAX_SYNC_CONN
int "BR/EDR Sync(SCO/eSCO) Max Connections"
depends on BTDM_CTRL_MODE_BR_EDR_ONLY || BTDM_CTRL_MODE_BTDM
default 0
range 0 3
help
BR/EDR Synchronize maximum connections of bluetooth controller.
Each connection uses 2 KB DRAM whenever the BT controller is enabled.
choice BTDM_CTRL_BR_EDR_SCO_DATA_PATH
prompt "BR/EDR Sync(SCO/eSCO) default data path"
depends on BTDM_CTRL_MODE_BR_EDR_ONLY || BTDM_CTRL_MODE_BTDM
default BTDM_CTRL_BR_EDR_SCO_DATA_PATH_PCM
help
SCO data path, i.e. HCI or PCM.
SCO data can be sent/received through HCI synchronous packets, or the data
can be routed to on-chip PCM module on ESP32. PCM input/output signals can
be "matrixed" to GPIOs. The default data path can also be set using API
"esp_bredr_sco_datapath_set"
config BTDM_CTRL_BR_EDR_SCO_DATA_PATH_HCI
bool "HCI"
config BTDM_CTRL_BR_EDR_SCO_DATA_PATH_PCM
bool "PCM"
endchoice
config BTDM_CTRL_BR_EDR_SCO_DATA_PATH_EFF
int
default 0 if BTDM_CTRL_BR_EDR_SCO_DATA_PATH_HCI
default 1 if BTDM_CTRL_BR_EDR_SCO_DATA_PATH_PCM
default 0
menuconfig BTDM_CTRL_PCM_ROLE_EDGE_CONFIG
bool "PCM Signal Config (Role and Polar)"
depends on BTDM_CTRL_BR_EDR_SCO_DATA_PATH_PCM
default y
choice BTDM_CTRL_PCM_ROLE
prompt "PCM Role"
depends on BTDM_CTRL_PCM_ROLE_EDGE_CONFIG
help
PCM role can be configured as PCM master or PCM slave
config BTDM_CTRL_PCM_ROLE_MASTER
bool "PCM Master"
config BTDM_CTRL_PCM_ROLE_SLAVE
bool "PCM Slave"
endchoice
choice BTDM_CTRL_PCM_POLAR
prompt "PCM Polar"
depends on BTDM_CTRL_PCM_ROLE_EDGE_CONFIG
help
PCM polarity can be configured as Falling Edge or Rising Edge
config BTDM_CTRL_PCM_POLAR_FALLING_EDGE
bool "Falling Edge"
config BTDM_CTRL_PCM_POLAR_RISING_EDGE
bool "Rising Edge"
endchoice
config BTDM_CTRL_PCM_ROLE_EFF
int
default 0 if BTDM_CTRL_PCM_ROLE_MASTER
default 1 if BTDM_CTRL_PCM_ROLE_SLAVE
default 0
config BTDM_CTRL_PCM_POLAR_EFF
int
default 0 if BTDM_CTRL_PCM_POLAR_FALLING_EDGE
default 1 if BTDM_CTRL_PCM_POLAR_RISING_EDGE
default 0
config BTDM_CTRL_AUTO_LATENCY
bool "Auto latency"
depends on BTDM_CTRL_MODE_BTDM
default n
help
BLE auto latency, used to enhance classic BT performance
while classic BT and BLE are enabled at the same time.
config BTDM_CTRL_AUTO_LATENCY_EFF
bool
default BTDM_CTRL_AUTO_LATENCY if BTDM_CTRL_MODE_BTDM
default n
config BTDM_CTRL_LEGACY_AUTH_VENDOR_EVT
bool "Legacy Authentication Vendor Specific Event Enable"
depends on BTDM_CTRL_MODE_BR_EDR_ONLY || BTDM_CTRL_MODE_BTDM
default y
help
To protect from BIAS attack during Legacy authentication,
Legacy authentication Vendor specific event should be enabled
config BTDM_CTRL_LEGACY_AUTH_VENDOR_EVT_EFF
bool
default BTDM_CTRL_LEGACY_AUTH_VENDOR_EVT if BTDM_CTRL_MODE_BR_EDR_ONLY || BTDM_CTRL_MODE_BTDM
default 0
config BTDM_CTRL_BLE_MAX_CONN_EFF
int
default BTDM_CTRL_BLE_MAX_CONN if BTDM_CTRL_MODE_BLE_ONLY || BTDM_CTRL_MODE_BTDM
default 0
config BTDM_CTRL_BR_EDR_MAX_ACL_CONN_EFF
int
default BTDM_CTRL_BR_EDR_MAX_ACL_CONN if BTDM_CTRL_MODE_BR_EDR_ONLY || BTDM_CTRL_MODE_BTDM
default 0
config BTDM_CTRL_BR_EDR_MAX_SYNC_CONN_EFF
int
default BTDM_CTRL_BR_EDR_MAX_SYNC_CONN if BTDM_CTRL_MODE_BR_EDR_ONLY || BTDM_CTRL_MODE_BTDM
default 0
choice BTDM_CTRL_PINNED_TO_CORE_CHOICE
prompt "The cpu core which bluetooth controller run"
depends on !FREERTOS_UNICORE
help
Specify the cpu core to run bluetooth controller.
Can not specify no-affinity.
config BTDM_CTRL_PINNED_TO_CORE_0
bool "Core 0 (PRO CPU)"
config BTDM_CTRL_PINNED_TO_CORE_1
bool "Core 1 (APP CPU)"
depends on !FREERTOS_UNICORE
endchoice
config BTDM_CTRL_PINNED_TO_CORE
int
default 0 if BTDM_CTRL_PINNED_TO_CORE_0
default 1 if BTDM_CTRL_PINNED_TO_CORE_1
default 0
choice BTDM_CTRL_HCI_MODE_CHOICE
prompt "HCI mode"
help
Speicify HCI mode as VHCI or UART(H4)
config BTDM_CTRL_HCI_MODE_VHCI
bool "VHCI"
help
Normal option. Mostly, choose this VHCI when bluetooth host run on ESP32, too.
config BTDM_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
menu "HCI UART(H4) Options"
visible if BTDM_CTRL_HCI_MODE_UART_H4
config BTDM_CTRL_HCI_UART_NO
int "UART Number for HCI"
depends on BTDM_CTRL_HCI_MODE_UART_H4
range 1 2
default 1
help
Uart number for HCI. The available uart is UART1 and UART2.
config BTDM_CTRL_HCI_UART_BAUDRATE
int "UART Baudrate for HCI"
depends on BTDM_CTRL_HCI_MODE_UART_H4
range 115200 921600
default 921600
help
UART Baudrate for HCI. Please use standard baudrate.
config BTDM_CTRL_HCI_UART_FLOW_CTRL_EN
bool "Enable UART flow control"
depends on BTDM_CTRL_HCI_MODE_UART_H4
default y
endmenu
menu "MODEM SLEEP Options"
config BTDM_CTRL_MODEM_SLEEP
bool "Bluetooth modem sleep"
default y
help
Enable/disable bluetooth controller low power mode.
choice BTDM_CTRL_MODEM_SLEEP_MODE
prompt "Bluetooth Modem sleep mode"
depends on BTDM_CTRL_MODEM_SLEEP
help
To select which strategy to use for modem sleep
config BTDM_CTRL_MODEM_SLEEP_MODE_ORIG
bool "ORIG Mode(sleep with low power clock)"
help
ORIG mode is a bluetooth sleep mode that can be used for dual mode controller. In this mode,
bluetooth controller sleeps between BR/EDR frames and BLE events. A low power clock is used to
maintain bluetooth reference clock.
config BTDM_CTRL_MODEM_SLEEP_MODE_EVED
bool "EVED Mode(For internal test only)"
help
EVED mode is for BLE only and is only for internal test. Do not use it for production. this
mode is not compatible with DFS nor light sleep
endchoice
choice BTDM_CTRL_LOW_POWER_CLOCK
prompt "Bluetooth low power clock"
depends on BTDM_CTRL_MODEM_SLEEP_MODE_ORIG
help
Select the low power clock source for bluetooth controller. Bluetooth low power clock is
the clock source to maintain time in sleep mode.
- "Main crystal" option provides good accuracy and can support Dynamic Frequency Scaling
to be used with Bluetooth modem sleep. Light sleep is not supported.
- "External 32kHz crystal" option allows user to use a 32.768kHz crystal as Bluetooth low
power clock. This option is allowed as long as External 32kHz crystal is configured as
the system RTC clock source. This option provides good accuracy and supports Bluetooth
modem sleep to be used alongside Dynamic Frequency Scaling or light sleep.
config BTDM_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, but
cannot work when light sleep is enabled. Main crystal has a good performance in accuracy as
the bluetooth low power clock source.
config BTDM_CTRL_LPCLK_SEL_EXT_32K_XTAL
bool "External 32kHz crystal"
depends on ESP32_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.
endchoice
endmenu
choice BTDM_BLE_SLEEP_CLOCK_ACCURACY
prompt "BLE Sleep Clock Accuracy"
depends on BTDM_CTRL_MODE_BLE_ONLY || BTDM_CTRL_MODE_BTDM
default BTDM_BLE_DEFAULT_SCA_250PPM
help
BLE Sleep Clock Accuracy(SCA) for the local device is used to estimate window widening in BLE
connection events. With a lower level of clock accuracy(e.g. 500ppm over 250ppm), the slave
needs a larger RX window to synchronize with master in each anchor point, thus resulting in an
increase of power consumption but a higher level of robustness in keeping connected. According
to the requirements of Bluetooth Core specification 4.2, the worst-case accuracy of Classic
Bluetooth low power oscialltor(LPO) is +/-250ppm in STANDBY and in low power modes such as
sniff. For BLE the worst-case SCA is +/-500ppm.
- "151ppm to 250ppm" option is the default value for Bluetooth Dual mode
- "251ppm to 500ppm" option can be used in BLE only mode when using external 32kHz crystal as
low power clock. This option is provided in case that BLE sleep clock has a lower level of
accuracy, or other error sources contribute to the inaccurate timing during sleep.
config BTDM_BLE_DEFAULT_SCA_500PPM
bool "251ppm to 500ppm"
depends on BTDM_CTRL_LPCLK_SEL_EXT_32K_XTAL && BTDM_CTRL_MODE_BLE_ONLY
config BTDM_BLE_DEFAULT_SCA_250PPM
bool "151ppm to 250ppm"
endchoice
config BTDM_BLE_SLEEP_CLOCK_ACCURACY_INDEX_EFF
int
default 0 if BTDM_BLE_DEFAULT_SCA_500PPM
default 1 if BTDM_BLE_DEFAULT_SCA_250PPM
default 1
config BTDM_BLE_SCAN_DUPL
bool "BLE Scan Duplicate Options"
depends on (BTDM_CTRL_MODE_BTDM || BTDM_CTRL_MODE_BLE_ONLY)
default y
help
This select enables parameters setting of BLE scan duplicate.
choice BTDM_SCAN_DUPL_TYPE
prompt "Scan Duplicate Type"
default BTDM_SCAN_DUPL_TYPE_DEVICE
depends on BTDM_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 BTDM_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 BTDM_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 BTDM_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 BTDM_SCAN_DUPL_TYPE
int
depends on BTDM_BLE_SCAN_DUPL
default 0 if BTDM_SCAN_DUPL_TYPE_DEVICE
default 1 if BTDM_SCAN_DUPL_TYPE_DATA
default 2 if BTDM_SCAN_DUPL_TYPE_DATA_DEVICE
default 0
config BTDM_SCAN_DUPL_CACHE_SIZE
int "Maximum number of devices in scan duplicate filter"
depends on BTDM_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 oldest device will be refreshed.
config BTDM_SCAN_DUPL_CACHE_REFRESH_PERIOD
int "Duplicate scan list refresh period (seconds)"
depends on BTDM_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 BTDM_BLE_MESH_SCAN_DUPL_EN
bool "Special duplicate scan mechanism for BLE Mesh scan"
depends on BTDM_BLE_SCAN_DUPL
default n
help
This enables the BLE scan duplicate for special BLE Mesh scan.
config BTDM_MESH_DUPL_SCAN_CACHE_SIZE
int "Maximum number of Mesh adv packets in scan duplicate filter"
depends on BTDM_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.
config BTDM_CTRL_FULL_SCAN_SUPPORTED
bool "BLE full scan feature supported"
depends on BTDM_CTRL_MODE_BLE_ONLY || BTDM_CTRL_MODE_BTDM
default y
help
The full scan function is mainly used to provide BLE scan performance.
This is required for scenes with high scan performance requirements, such as BLE Mesh scenes.
config BTDM_BLE_ADV_REPORT_FLOW_CTRL_SUPP
bool "BLE adv report flow control supported"
depends on (BTDM_CTRL_MODE_BTDM || BTDM_CTRL_MODE_BLE_ONLY)
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 BTDM_BLE_ADV_REPORT_FLOW_CTRL_NUM
int "BLE adv report flow control number"
depends on BTDM_BLE_ADV_REPORT_FLOW_CTRL_SUPP
range 50 1000
default 100
help
The number of unprocessed advertising report that Bluedroid can save.If you set
`BTDM_BLE_ADV_REPORT_FLOW_CTRL_NUM` to a small value, this may cause adv packets lost.
If you set `BTDM_BLE_ADV_REPORT_FLOW_CTRL_NUM` to a large value, Bluedroid 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
`BTDM_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 BTDM_BLE_ADV_REPORT_DISCARD_THRSHOLD
int "BLE adv lost event threshold value"
depends on BTDM_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 `BTDM_BLE_ADV_REPORT_DISCARD_THRSHOLD` to a small value or printf every adv lost event, it
may cause adv packets lost more.
config BTDM_RESERVE_DRAM
hex
default 0xdb5c if BT_ENABLED
default 0
config BTDM_CTRL_HLI
bool "High level interrupt"
depends on BT_ENABLED
default y
help
Using Level 4 interrupt for Bluetooth.
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