mainmenu "RT-Thread Project Configuration" BSP_DIR := . RTT_DIR := ../.. PKGS_DIR := packages ENV_DIR := / source "$(RTT_DIR)/Kconfig" osource "$PKGS_DIR/Kconfig" config SOC_LM3S9B9X bool select ARCH_ARM_CORTEX_M3 default y config RT_LWIP_ETH_PAD_SIZE int default 2 config RT_USING_UART1 bool default y