Chapter 2. API Reference
CONFIG_ESP32_WIFI_IRAM_OPT
WiFi IRAM speed optimization
Found in: Component config > Wi-Fi
Select this option to place frequently called Wi-Fi library functions in IRAM. When this option is dis-
abled, more than 10Kbytes of IRAM memory will be saved but Wi-Fi throughput will be reduced.
Default value:
• Yes (enabled)
CONFIG_ESP32_WIFI_RX_IRAM_OPT
WiFi RX IRAM speed optimization
Found in: Component config > Wi-Fi
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.
Default value:
• Yes (enabled)
CONFIG_ESP32_WIFI_ENABLE_WPA3_SAE
Enable WPA3-Personal
Found in: Component config > Wi-Fi
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.
Default value:
• Yes (enabled)
CONFIG_ESP_WIFI_SLP_IRAM_OPT
WiFi SLP IRAM speed optimization
Found in: Component config > Wi-Fi
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
Minimum active time
Found in: Component config > Wi-Fi > CONFIG_ESP_WIFI_SLP_IRAM_OPT
The minimum timeout for waiting to receive data, unit: milliseconds.
Range:
• from 8 to 60 if CONFIG_ESP_WIFI_SLP_IRAM_OPT
Default value:
• 50 if CONFIG_ESP_WIFI_SLP_IRAM_OPT
Espressif Systems 1133
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