mainmenu "RT-Thread Configuration" config BSP_DIR string option env="BSP_ROOT" default "." config RTT_DIR string option env="RTT_ROOT" default "../../.." config PKGS_DIR string option env="PKGS_ROOT" default "packages" config SOC_STM32L452RE bool select SOC_SERIES_STM32L4 select RT_USING_COMPONENTS_INIT select RT_USING_USER_MAIN default y source "$RTT_DIR/Kconfig" source "$PKGS_DIR/Kconfig" source "../libraries/Kconfig" if !RT_USING_NANO source "board/Kconfig" endif