(5)RTC时钟\board\inc\delay.h
..........\.....\...\fonts.h
..........\.....\...\key.h
..........\.....\...\lcd.h
..........\.....\...\led.h
..........\.....\...\rtc.h
..........\.....\...\timer.h
..........\.....\...\usart.h
..........\.....\src\delay.c
..........\.....\...\key.c
..........\.....\...\lcd.c
..........\.....\...\led.c
..........\.....\...\rtc.c
..........\.....\...\timer.c
..........\.....\...\usart.c
..........\inc\main.h
..........\...\stm32f4xx_conf.h
..........\...\stm32f4xx_it.h
..........\proj\JLinkLog.txt
..........\....\JLinkSettings.ini
..........\....\startup_stm32f4xx.s
..........\....\test.plg
..........\....\test.uvgui.Administrator
..........\....\test.uvgui_Administrator.bak
..........\....\test.uvopt
..........\....\test.uvproj
..........\....\test_Target 1.dep
..........\....\test_uvopt.bak
..........\....\test_uvproj.bak
..........\src\main.c
..........\...\stm32f4xx_it.c
..........\...\system_stm32f4xx.c
..........\board\inc
..........\.....\src
..........\proj\output
..........\board
..........\inc
..........\proj
..........\src
(5)RTC时钟