menu "General Drivers Configuration" menuconfig BSP_USING_UART bool "Using UART" select RT_USING_SERIAL default y if BSP_USING_UART config RT_USING_UART0 bool "Enable UART 0" default y config RT_USING_UART1 bool "Enable UART 1" default n config UART_IRQ_BASE int default 30 endif endmenu