# 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" 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" 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