esp-idf/examples/system/ulp/ulp_riscv/uart_print/main/Kconfig.projbuild

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menu "ULP-RISCV UART TX Example Configuration"
orsource "$IDF_PATH/examples/common_components/env_caps/$IDF_TARGET/Kconfig.env_caps"
config EXAMPLE_UART_TXD
int "UART TXD pin number"
range ENV_GPIO_RANGE_MIN ENV_GPIO_OUT_RANGE_MAX
default 4
help
GPIO number for UART TX pin. See UART documentation for more information
about available pin numbers for UART.
endmenu