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# Copyright 2020 Espressif Systems (Shanghai) PTE LTD
menuconfig WIFI_ESP32
bool "ESP32 SoC WiFi support"
default y
depends on DT_HAS_ESPRESSIF_ESP32_WIFI_ENABLED
depends on !SMP
select THREAD_CUSTOM_DATA
select NET_L2_WIFI_MGMT
select WIFI_USE_NATIVE_NETWORKING
select MBEDTLS
select MBEDTLS_ENTROPY_ENABLED
select MBEDTLS_KEY_EXCHANGE_ECDHE_ECDSA_ENABLED
select MBEDTLS_ECP_ALL_ENABLED
select MBEDTLS_ECDH_C
select MBEDTLS_ECDSA_C
select MBEDTLS_ECP_C
help
Enable ESP32 SoC WiFi support. Only supported in single
core mode because the network stack is not aware of SMP
stuff.
if WIFI_ESP32
config ESP32_WIFI_STA_AUTO_DHCPV4
bool "Automatically starts DHCP4 negotiation"
depends on NET_DHCPV4
depends on NET_IPV4
help
WiFi driver will automatically initiate DHCPV4 negotiation when connected.
config ESP32_WIFI_STA_RECONNECT
bool "WiFi connection retry"
help
Set auto WiFI reconnection when disconnected.
config ESP32_WIFI_EVENT_TASK_STACK_SIZE
int "Event Task Stack Size"
default 4096
config ESP32_WIFI_EVENT_TASK_PRIO
int "Event Task Priority"
default 4
config ESP32_WIFI_STATIC_RX_BUFFER_NUM
int "Max number of WiFi static RX buffers"
range 2 25
default 10
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
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"
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"
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 TXbuffer 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)"
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. It improves transmission
error checking and overall network performance with the cost of processing
speed. Helpful when the device is operating in crowded wireless area.
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. It improves transmission
error checking and overall network performance with the cost of processing
speed. Helpful when the device is operating in crowded wireless area.
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
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 preferred to be allocated in PSRAM first, the default and minimum value
should be 16 to achieve better throughput and compatibility with both
stations and APs.
choice ESP32_WIFI_TASK_CORE_ID
prompt "WiFi Task Core ID"
default ESP32_WIFI_TASK_PINNED_TO_CORE_0
help
Pinned WiFi task to core 0 (core 1 not supported yet)
config ESP32_WIFI_TASK_PINNED_TO_CORE_0
bool "Core 0"
endchoice
config ESP32_WIFI_SW_COEXIST_ENABLE
bool
help
Software controls WiFi/Bluetooth coexistence. Not supported yet.
config ESP32_WIFI_IRAM_OPT
bool "WiFi IRAM speed optimization"
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 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_NET_ALLOC_SPIRAM
bool "Allocate memory of WiFi and NET in SPIRAM"
depends on ESP_SPIRAM
help
Allocate memory of WiFi and NET stack in SPIRAM, increasing available RAM memory space
for application stack.
config ESP_WIFI_SOFTAP_SUPPORT
bool
default y
help
Hidden option to enable Wi-Fi SoftAP functions in WPA supplicant and RF libraries.
endif # WIFI_ESP32