Espressif ESP32-S2 Programming Manual page 1118

Chapter 2. API Reference
CONFIG_ESP32S2_FIXED_STATIC_RAM_SIZE
Fixed Static RAM size
Found in: Component config
RAM size dedicated for static variables (.data & .bss sections).
Range:
• from 0 to 0x34000 if
Default value:
•"0x10000"if
ADC-Calibration
Common ESP-related Contains:
• CONFIG_ESP_ERR_TO_NAME_LOOKUP
CONFIG_ESP_ERR_TO_NAME_LOOKUP
Enable lookup of error code strings
Found in: Component config
Functions esp_err_to_name() and esp_err_to_name_r() return string representations of error codes from
a pre-generated lookup table. This option can be used to turn off the use of the look-up table in order
to save memory but this comes at the price of sacrificing distinguishable (meaningful) output string
representations.
Default value:
• Yes (enabled)
Ethernet Contains:
• CONFIG_ETH_USE_OPENETH
• CONFIG_ETH_USE_SPI_ETHERNET
CONFIG_ETH_USE_SPI_ETHERNET
Support SPI to Ethernet Module
Found in: Component config
ESP-IDF can also support some SPI-Ethernet modules.
Default value:
• Yes (enabled)
Contains:
• CONFIG_ETH_SPI_ETHERNET_DM9051
• CONFIG_ETH_SPI_ETHERNET_KSZ8851SNL
• CONFIG_ETH_SPI_ETHERNET_W5500
CONFIG_ETH_SPI_ETHERNET_DM9051
Use DM9051
Found in: Component config
DM9051 is a fast Ethernet controller with an SPI interface. It's also integrated with a 10/100M PHY
and MAC. Select this to enable DM9051 driver.
Espressif Systems
> ESP32S2-specific > CONFIG_ESP32S2_USE_FIXED_STATIC_RAM_SIZE
CONFIG_ESP32S2_USE_FIXED_STATIC_RAM_SIZE
CONFIG_ESP32S2_USE_FIXED_STATIC_RAM_SIZE
> Common ESP-related
> Ethernet
> Ethernet > CONFIG_ETH_USE_SPI_ETHERNET
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