Import('RTT_ROOT')Import('rtconfig')frombuildingimport*cwd=GetCurrentDir()# add the general drivers.src=Split("""""")ifGetDepend('SOC_RISCV_SERIES_CH32V103'):ifGetDepend('RT_USING_PIN'):src+=['drv_gpio.c']ifGetDepend(['RT_USING_SERIAL','BSP_USING_UART']):src+=['drv_usart.c']path=[cwd]group=DefineGroup('Drivers',src,depend=[''],CPPPATH=path)Return('group')