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menu "Hardware Drivers Config" menu "On-chip Peripheral Drivers" config BSP_USING_GPIO bool "Enable GPIO" select RT_USING_PIN default y menu "UART Drivers" config BSP_USING_UART0 bool "Enable UART0 PA2/3(R/T)" select RT_USING_SERIAL default y config BSP_USING_UART1 bool "Enable UART1 PC2/3(R/T)" select RT_USING_SERIAL default n endmenu endmenu endmenu