File list (Check if you may need any files):
sin_cos_DAC\BlankPrj.map
...........\BlankPrj.uvgui.laoyl
...........\BlankPrj.uvgui.lenovo
...........\BlankPrj.uvgui_laoyl.bak
...........\BlankPrj.uvopt
...........\BlankPrj.uvproj
...........\BlankPrj_Stm32F4Proj.dep
...........\BlankPrj_uvopt.bak
...........\BlankPrj_uvproj.bak
...........\Debug\BlankPrj.axf
...........\.....\BlankPrj.build_log.htm
...........\.....\BlankPrj.htm
...........\.....\BlankPrj.lnp
...........\.....\BlankPrj.plg
...........\.....\BlankPrj.sct
...........\.....\BlankPrj.tra
...........\.....\common.crf
...........\.....\common.d
...........\.....\common.o
...........\.....\ExtDll.iex
...........\.....\led.crf
...........\.....\led.d
...........\.....\led.o
...........\.....\main.crf
...........\.....\main.d
...........\.....\main.o
...........\.....\misc.crf
...........\.....\misc.d
...........\.....\misc.o
...........\.....\startup_stm32f4xx.d
...........\.....\startup_stm32f4xx.o
...........\.....\stm32f4xx_dac.crf
...........\.....\stm32f4xx_dac.d
...........\.....\stm32f4xx_dac.o
...........\.....\stm32f4xx_dma.crf
...........\.....\stm32f4xx_dma.d
...........\.....\stm32f4xx_dma.o
...........\.....\stm32f4xx_flash.crf
...........\.....\stm32f4xx_flash.d
...........\.....\stm32f4xx_flash.o
...........\.....\stm32f4xx_gpio.crf
...........\.....\stm32f4xx_gpio.d
...........\.....\stm32f4xx_gpio.o
...........\.....\stm32f4xx_it.crf
...........\.....\stm32f4xx_it.d
...........\.....\stm32f4xx_it.o
...........\.....\stm32f4xx_rcc.crf
...........\.....\stm32f4xx_rcc.d
...........\.....\stm32f4xx_rcc.o
...........\.....\stm32f4xx_syscfg.crf
...........\.....\stm32f4xx_syscfg.d
...........\.....\stm32f4xx_syscfg.o
...........\.....\stm32f4xx_tim.crf
...........\.....\stm32f4xx_tim.d
...........\.....\stm32f4xx_tim.o
...........\.....\stm32f4xx_usart.crf
...........\.....\stm32f4xx_usart.d
...........\.....\stm32f4xx_usart.o
...........\.....\sysdelay.crf
...........\.....\sysdelay.d
...........\.....\sysdelay.o
...........\.....\system_stm32f4xx.crf
...........\.....\system_stm32f4xx.d
...........\.....\system_stm32f4xx.o
...........\LED\led.c
...........\...\led.h
...........\lib\arm_cortexM4lf_math.lib
...........\Source\arm_math.h
...........\......\common.c
...........\......\common.h
...........\......\main.c
...........\......\selftest.c
...........\......\selftest.h
...........\......\startup_stm32f4xx.s
...........\......\stm32f4xx_conf.h
...........\......\stm32f4xx_it.c
...........\......\stm32f4xx_it.h
...........\......\sysdelay.c
...........\......\sysdelay.h
...........\......\system_stm32f4xx.c
...........\......\usbd_conf.h
...........\......\usbd_desc.c
...........\......\usbd_desc.h
...........\......\usbd_usr.c
...........\......\usb_bsp.c
...........\......\usb_conf.h
...........\startup_stm32f4xx.lst
...........\STM32F4xx_StdPeriph_Driver\inc\misc.h
...........\..........................\...\stm32f4xx_adc.h
...........\..........................\...\stm32f4xx_can.h
...........\..........................\...\stm32f4xx_crc.h
...........\..........................\...\stm32f4xx_cryp.h
...........\..........................\...\stm32f4xx_dac.h
...........\..........................\...\stm32f4xx_dbgmcu.h
...........\..........................\...\stm32f4xx_dcmi.h
...........\..........................\...\stm32f4xx_dma.h
...........\..........................\...\stm32f4xx_exti.h
...........\..........................\...\stm32f4xx_flash.h
...........\..........................\...\stm32f4xx_fsmc.h
...........\..........................\...\stm32f4xx_gpio.h