Import('RTT_ROOT')Import('rtconfig')frombuildingimport*cwd=os.path.join(str(Dir('#')),'drivers')# add the general drivers.src=Split("""board.c""")CPPPATH=[cwd]# add uart drivers.ifGetDepend('RT_USING_SERIAL'):src+=['drv_usart.c']ifGetDepend('RT_USING_PIN'):src+=['drv_gpio.c']ifGetDepend('RT_USING_ADC'):src+=['drv_adc.c']ifGetDepend('RT_USING_HWTIMER'):src+=['drv_hwtimer.c']ifGetDepend('RT_USING_RTC'):src+=['drv_rtc.c']ifGetDepend('RT_USING_WDT'):src+=['drv_iwdt.c']group=DefineGroup('Drivers',src,depend=[''],CPPPATH=CPPPATH)Return('group')