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esp-idf/components/esp_wifi/Kconfig

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menu "Wi-Fi"
visible if !IDF_TARGET_ESP32H2 && !IDF_TARGET_ESP8684 # TODO: remove 8684 after supported. IDF-3905
config ESP32_WIFI_ENABLED
bool
default "n" if IDF_TARGET_ESP8684 # TODO: replace with SOC_CAPS_SUPPORT_WIFI after IDF-2223 is done
default "y" if !IDF_TARGET_ESP32H2
config ESP32_WIFI_SW_COEXIST_ENABLE
bool "Software controls WiFi/Bluetooth coexistence"
depends on ESP32_WIFI_ENABLED && BT_ENABLED
default y
help
If enabled, WiFi & Bluetooth coexistence is controlled by software rather than hardware.
Recommended for heavy traffic scenarios. Both coexistence configuration options are
automatically managed, no user intervention is required.
If only Bluetooth is used, it is recommended to disable this option to reduce binary file
size.
config ESP32_WIFI_STATIC_RX_BUFFER_NUM
int "Max number of WiFi static RX buffers"
range 2 25
default 10 if !SPIRAM_TRY_ALLOCATE_WIFI_LWIP
default 16 if SPIRAM_TRY_ALLOCATE_WIFI_LWIP
help
Set the number of WiFi static RX buffers. Each buffer takes approximately 1.6KB of RAM.
The static rx buffers are allocated when esp_wifi_init is called, they are not freed
until esp_wifi_deinit is called.
WiFi hardware use these buffers to receive all 802.11 frames.
A higher number may allow higher throughput but increases memory use. If ESP32_WIFI_AMPDU_RX_ENABLED
is enabled, this value is recommended to set equal or bigger than ESP32_WIFI_RX_BA_WIN in order to
achieve better throughput and compatibility with both stations and APs.
config ESP32_WIFI_DYNAMIC_RX_BUFFER_NUM
int "Max number of WiFi dynamic RX buffers"
range 0 128 if !LWIP_WND_SCALE
range 0 1024 if LWIP_WND_SCALE
default 32
help
Set the number of WiFi dynamic RX buffers, 0 means unlimited RX buffers will be allocated
(provided sufficient free RAM). The size of each dynamic RX buffer depends on the size of
the received data frame.
For each received data frame, the WiFi driver makes a copy to an RX buffer and then delivers
it to the high layer TCP/IP stack. The dynamic RX buffer is freed after the higher layer has
successfully received the data frame.
For some applications, WiFi data frames may be received faster than the application can
process them. In these cases we may run out of memory if RX buffer number is unlimited (0).
If a dynamic RX buffer limit is set, it should be at least the number of static RX buffers.
choice ESP32_WIFI_TX_BUFFER
prompt "Type of WiFi TX buffers"
default ESP32_WIFI_DYNAMIC_TX_BUFFER
help
Select type of WiFi TX buffers:
If "Static" is selected, WiFi TX buffers are allocated when WiFi is initialized and released
when WiFi is de-initialized. The size of each static TX buffer is fixed to about 1.6KB.
If "Dynamic" is selected, each WiFi TX buffer is allocated as needed when a data frame is
delivered to the Wifi driver from the TCP/IP stack. The buffer is freed after the data frame
has been sent by the WiFi driver. The size of each dynamic TX buffer depends on the length
of each data frame sent by the TCP/IP layer.
If PSRAM is enabled, "Static" should be selected to guarantee enough WiFi TX buffers.
If PSRAM is disabled, "Dynamic" should be selected to improve the utilization of RAM.
config ESP32_WIFI_STATIC_TX_BUFFER
bool "Static"
config ESP32_WIFI_DYNAMIC_TX_BUFFER
bool "Dynamic"
depends on !SPIRAM_USE_MALLOC
endchoice
config ESP32_WIFI_TX_BUFFER_TYPE
int
default 0 if ESP32_WIFI_STATIC_TX_BUFFER
default 1 if ESP32_WIFI_DYNAMIC_TX_BUFFER
config ESP32_WIFI_STATIC_TX_BUFFER_NUM
int "Max number of WiFi static TX buffers"
depends on ESP32_WIFI_STATIC_TX_BUFFER
range 1 64
default 16
help
Set the number of WiFi static TX buffers. Each buffer takes approximately 1.6KB of RAM.
The static RX buffers are allocated when esp_wifi_init() is called, they are not released
until esp_wifi_deinit() is called.
For each transmitted data frame from the higher layer TCP/IP stack, the WiFi driver makes a
copy of it in a TX buffer. For some applications especially UDP applications, the upper
layer can deliver frames faster than WiFi layer can transmit. In these cases, we may run out
of TX buffers.
config ESP32_WIFI_CACHE_TX_BUFFER_NUM
int "Max number of WiFi cache TX buffers"
depends on (ESP32_SPIRAM_SUPPORT || ESP32S2_SPIRAM_SUPPORT || ESP32S3_SPIRAM_SUPPORT)
range 16 128
default 32
help
Set the number of WiFi cache TX buffer number.
For each TX packet from uplayer, such as LWIP etc, WiFi driver needs to allocate a static TX
buffer and makes a copy of uplayer packet. If WiFi driver fails to allocate the static TX buffer,
it caches the uplayer packets to a dedicated buffer queue, this option is used to configure the
size of the cached TX queue.
config ESP32_WIFI_DYNAMIC_TX_BUFFER_NUM
int "Max number of WiFi dynamic TX buffers"
depends on ESP32_WIFI_DYNAMIC_TX_BUFFER
range 1 128
default 32
help
Set the number of WiFi dynamic TX buffers. The size of each dynamic TX buffer is not fixed,
it depends on the size of each transmitted data frame.
For each transmitted frame from the higher layer TCP/IP stack, the WiFi driver makes a copy
of it in a TX buffer. For some applications, especially UDP applications, the upper layer
can deliver frames faster than WiFi layer can transmit. In these cases, we may run out of TX
buffers.
config ESP32_WIFI_CSI_ENABLED
bool "WiFi CSI(Channel State Information)"
default n
help
Select this option to enable CSI(Channel State Information) feature. CSI takes about
CONFIG_ESP32_WIFI_STATIC_RX_BUFFER_NUM KB of RAM. If CSI is not used, it is better to disable
this feature in order to save memory.
config ESP32_WIFI_AMPDU_TX_ENABLED
bool "WiFi AMPDU TX"
default y
help
Select this option to enable AMPDU TX feature
config ESP32_WIFI_TX_BA_WIN
int "WiFi AMPDU TX BA window size"
depends on ESP32_WIFI_AMPDU_TX_ENABLED
range 2 32
default 6
help
Set the size of WiFi Block Ack TX window. Generally a bigger value means higher throughput but
more memory. Most of time we should NOT change the default value unless special reason, e.g.
test the maximum UDP TX throughput with iperf etc. For iperf test in shieldbox, the recommended
value is 9~12.
config ESP32_WIFI_AMPDU_RX_ENABLED
bool "WiFi AMPDU RX"
default y
help
Select this option to enable AMPDU RX feature
config ESP32_WIFI_RX_BA_WIN
int "WiFi AMPDU RX BA window size"
depends on ESP32_WIFI_AMPDU_RX_ENABLED
range 2 32
default 6 if !SPIRAM_TRY_ALLOCATE_WIFI_LWIP
default 16 if SPIRAM_TRY_ALLOCATE_WIFI_LWIP
help
Set the size of WiFi Block Ack RX window. Generally a bigger value means higher throughput and better
compatibility but more memory. Most of time we should NOT change the default value unless special
reason, e.g. test the maximum UDP RX throughput with iperf etc. For iperf test in shieldbox, the
recommended value is 9~12. If PSRAM is used and WiFi memory is prefered to allocat in PSRAM first,
the default and minimum value should be 16 to achieve better throughput and compatibility with both
stations and APs.
config ESP32_WIFI_AMSDU_TX_ENABLED
bool "WiFi AMSDU TX"
depends on (ESP32_SPIRAM_SUPPORT || ESP32S2_SPIRAM_SUPPORT || ESP32S3_SPIRAM_SUPPORT)
default n
help
Select this option to enable AMSDU TX feature
config ESP32_WIFI_NVS_ENABLED
bool "WiFi NVS flash"
default y
help
Select this option to enable WiFi NVS flash
choice ESP32_WIFI_TASK_CORE_ID
depends on !FREERTOS_UNICORE
prompt "WiFi Task Core ID"
default ESP32_WIFI_TASK_PINNED_TO_CORE_0
help
Pinned WiFi task to core 0 or core 1.
config ESP32_WIFI_TASK_PINNED_TO_CORE_0
bool "Core 0"
config ESP32_WIFI_TASK_PINNED_TO_CORE_1
bool "Core 1"
endchoice
config ESP32_WIFI_SOFTAP_BEACON_MAX_LEN
int "Max length of WiFi SoftAP Beacon"
range 752 1256
default 752
help
ESP-MESH utilizes beacon frames to detect and resolve root node conflicts (see documentation). However the
default length of a beacon frame can simultaneously hold only five root node identifier structures,
meaning that a root node conflict of up to five nodes can be detected at one time. In the occurence of
more root nodes conflict involving more than five root nodes, the conflict resolution process will detect
five of the root nodes, resolve the conflict, and re-detect more root nodes. This process will repeat
until all root node conflicts are resolved. However this process can generally take a very long time.
To counter this situation, the beacon frame length can be increased such that more root nodes can be
detected simultaneously. Each additional root node will require 36 bytes and should be added ontop of the
default beacon frame length of
752 bytes. For example, if you want to detect 10 root nodes simultaneously, you need to set the beacon
frame length as
932 (752+36*5).
Setting a longer beacon length also assists with debugging as the conflicting root nodes can be identified
more quickly.
config ESP32_WIFI_MGMT_SBUF_NUM
int "WiFi mgmt short buffer number"
range 6 32
default 32
help
Set the number of WiFi management short buffer.
config ESP32_WIFI_IRAM_OPT
bool "WiFi IRAM speed optimization"
default n if (BT_ENABLED && ESP32_SPIRAM_SUPPORT)
default y
help
Select this option to place frequently called Wi-Fi library functions in IRAM.
When this option is disabled, more than 10Kbytes of IRAM memory will be saved
but Wi-Fi throughput will be reduced.
config ESP32_WIFI_RX_IRAM_OPT
bool "WiFi RX IRAM speed optimization"
default n if (BT_ENABLED && ESP32_SPIRAM_SUPPORT)
default y
help
Select this option to place frequently called Wi-Fi library RX functions in IRAM.
When this option is disabled, more than 17Kbytes of IRAM memory will be saved
but Wi-Fi performance will be reduced.
config ESP32_WIFI_ENABLE_WPA3_SAE
bool "Enable WPA3-Personal"
default y
depends on WPA_MBEDTLS_CRYPTO
help
Select this option to allow the device to establish a WPA3-Personal connection with eligible AP's.
PMF (Protected Management Frames) is a prerequisite feature for a WPA3 connection, it needs to be
explicitly configured before attempting connection. Please refer to the Wi-Fi Driver API Guide for details.
config ESP_WIFI_SLP_IRAM_OPT
bool "WiFi SLP IRAM speed optimization"
select PM_SLP_DEFAULT_PARAMS_OPT
help
Select this option to place called Wi-Fi library TBTT process and receive beacon functions in IRAM.
Some functions can be put in IRAM either by ESP32_WIFI_IRAM_OPT and ESP32_WIFI_RX_IRAM_OPT, or this one.
If already enabled ESP32_WIFI_IRAM_OPT, the other 7.3KB IRAM memory would be taken by this option.
If already enabled ESP32_WIFI_RX_IRAM_OPT, the other 1.3KB IRAM memory would be taken by this option.
If neither of them are enabled, the other 7.4KB IRAM memory would be taken by this option.
Wi-Fi power-save mode average current would be reduced if this option is enabled.
config ESP_WIFI_SLP_DEFAULT_MIN_ACTIVE_TIME
int "Minimum active time"
range 8 60
default 50
depends on ESP_WIFI_SLP_IRAM_OPT
help
The minimum timeout for waiting to receive data, unit: milliseconds.
config ESP_WIFI_SLP_DEFAULT_MAX_ACTIVE_TIME
int "Maximum keep alive time"
range 10 60
default 10
depends on ESP_WIFI_SLP_IRAM_OPT
help
The maximum time that wifi keep alive, unit: seconds.
config ESP_WIFI_FTM_ENABLE
bool "WiFi FTM"
default n
depends on (IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32S3)
help
Enable feature Fine Timing Measurement for calculating WiFi Round-Trip-Time (RTT).
config ESP_WIFI_FTM_INITIATOR_SUPPORT
bool "FTM Initiator support"
default y
depends on ESP_WIFI_FTM_ENABLE
config ESP_WIFI_FTM_RESPONDER_SUPPORT
bool "FTM Responder support"
default y
depends on ESP_WIFI_FTM_ENABLE
config ESP_WIFI_STA_DISCONNECTED_PM_ENABLE
bool "Power Management for station at disconnected"
help
Select this option to enable power_management for station when disconnected.
Chip will do modem-sleep when rf module is not in use any more.
config ESP_WIFI_EXTERNAL_COEXIST_ENABLE
bool "WiFi External Coexistence"
default n
depends on (!BT_ENABLED && (IDF_TARGET_ESP32S2 || IDF_TARGET_ESP32C3))
help
If enabled, HW External coexistence arbitration is managed by GPIO pins.
It can support three types of wired combinations so far which are 1-wired/2-wired/3-wired.
User can select GPIO pins in application code with configure interfaces.
This function depends on BT-off
because currently we don't support external coex and internal coex simultaneously.
config ESP_WIFI_GCMP_SUPPORT
bool "WiFi GCMP Support(GCMP128 and GCMP256)"
default n
depends on (IDF_TARGET_ESP32C3 || IDF_TARGET_ESP32S3)
help
Select this option to enable GCMP support. GCMP support is compulsory for WiFi Suite-B support.
config ESP_WIFI_GMAC_SUPPORT
bool "WiFi GMAC Support(GMAC128 and GMAC256)"
default n
help
Select this option to enable GMAC support. GMAC support is compulsory for WiFi 192 bit certification.
config ESP_WIFI_SOFTAP_SUPPORT
bool "WiFi SoftAP Support"
default y
help
WiFi module can be compiled without SoftAP to save code size.
endmenu # Wi-Fi
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