Espressif ESP32-S2 User Manual

Chapter 2. API Reference
CONFIG_ESP_MINIMAL_SHARED_STACK_SIZE
Minimal allowed size for shared stack
Found in: Component config > ESP System Settings
Minimal value of size, in bytes, accepted to execute a expression with shared stack.
Default value:
• 2048
CONFIG_ESP_CONSOLE_UART
Channel for console output
Found in: Component config > ESP System Settings
Select where to send console output (through stdout and stderr).
• Default is to use UART0 on pre-defined GPIOs.
• If “Custom”is selected, UART0 or UART1 can be chosen, and any pins can be selected.
• If “None”is selected, there will be no console output on any UART, except for initial output
from ROM bootloader. This ROM output can be suppressed by GPIO strapping or EFUSE, refer
to chip datasheet for details.
• On chips with USB OTG peripheral,“USB CDC”option redirects output to the CDC port. This
option uses the CDC driver in the chip ROM. This option is incompatible with TinyUSB stack.
• On chips with an USB serial/JTAG debug controller, selecting the option for that redirects output
to the CDC/ACM (serial port emulation) component of that device.
Available options:
• Default: UART0 (ESP_CONSOLE_UART_DEFAULT)
• USB CDC (ESP_CONSOLE_USB_CDC)
• USB Serial/JTAG Controller (ESP_CONSOLE_USB_SERIAL_JTAG)
• Custom UART (ESP_CONSOLE_UART_CUSTOM)
• None (ESP_CONSOLE_NONE)
CONFIG_ESP_CONSOLE_UART_NUM
UART peripheral to use for console output (0-1)
Found in: Component config > ESP System Settings
This UART peripheral is used for console output from the ESP-IDF Bootloader and the app.
If the configuration is different in the Bootloader binary compared to the app binary, UART is recon-
figured after the bootloader exits and the app starts.
Due to an ESP32 ROM bug, UART2 is not supported for console output via esp_rom_printf.
Available options:
• UART0 (ESP_CONSOLE_UART_CUSTOM_NUM_0)
• UART1 (ESP_CONSOLE_UART_CUSTOM_NUM_1)
CONFIG_ESP_CONSOLE_UART_TX_GPIO
UART TX on GPIO#
Found in: Component config > ESP System Settings
This GPIO is used for console UART TX output in the ESP-IDF Bootloader and the app (including boot
log output and default standard output and standard error of the app).
If the configuration is different in the Bootloader binary compared to the app binary, UART is recon-
figured after the bootloader exits and the app starts.
Range:
Espressif Systems 1122
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Release v4.4

Espressif ESP32-S2 Specifications

General

Brand	Espressif
Model	ESP32-S2
Category	Single board computers
Language	English