The STM32 code Ultrasonic Ranging use Ultrasonic Ranging Module HC-SR04

Sound-ELC\CMSIS\core_cm3.c
.........\.....\system_stm32f10x.c
.........\Doc\readme.txt
.........\Include\core_cm3.h
.........\.......\misc.h
.........\.......\stm32f10x.h
.........\.......\stm32f10x_adc.h
.........\.......\stm32f10x_bkp.h
.........\.......\stm32f10x_can.h
.........\.......\stm32f10x_cec.h
.........\.......\stm32f10x_conf.h
.........\.......\stm32f10x_crc.h
.........\.......\stm32f10x_dac.h
.........\.......\stm32f10x_dbgmcu.h
.........\.......\stm32f10x_dma.h
.........\.......\stm32f10x_exti.h
.........\.......\stm32f10x_flash.h
.........\.......\stm32f10x_fsmc.h
.........\.......\stm32f10x_gpio.h
.........\.......\stm32f10x_i2c.h
.........\.......\stm32f10x_it.h
.........\.......\stm32f10x_iwdg.h
.........\.......\stm32f10x_pwr.h
.........\.......\stm32f10x_rcc.h
.........\.......\stm32f10x_rtc.h
.........\.......\stm32f10x_sdio.h
.........\.......\stm32f10x_spi.h
.........\.......\stm32f10x_tim.h
.........\.......\stm32f10x_usart.h
.........\.......\stm32f10x_wwdg.h
.........\.......\system_stm32f10x.h
.........\Project\ELC.uvgui.Administrator
.........\.......\ELC.uvgui.liuzq
.........\.......\ELC.uvgui_Administrator.bak
.........\.......\ELC.uvgui_liuzq.bak
.........\.......\ELC.uvopt
.........\.......\ELC.uvproj
.........\.......\ELC_ELC.dep
.........\.......\ELC_uvopt.bak
.........\.......\ELC_uvproj.bak
.........\.......\JLink Regs CM3.txt
.........\.......\JLinkLog.txt
.........\.......\JLinkSettings.ini
.........\.......\List\ELC.map
.........\.......\....\startup_stm32f10x_md.lst
.........\.......\....\youpeng.map
.........\.......\Obj\cdma.crf
.........\.......\...\cdma.d
.........\.......\...\cdma.o
.........\.......\...\cdma.__i
.........\.......\...\cdmahandle.crf
.........\.......\...\cdmahandle.d
.........\.......\...\cdmahandle.o
.........\.......\...\cmtiqueue.crf
.........\.......\...\cmtiqueue.d
.........\.......\...\cmtiqueue.o
.........\.......\...\commu_handletx.crf
.........\.......\...\commu_handletx.d
.........\.......\...\commu_handletx.o
.........\.......\...\core_cm3.crf
.........\.......\...\core_cm3.d
.........\.......\...\core_cm3.o
.........\.......\...\ELC.axf
.........\.......\...\ELC.hex
.........\.......\...\ELC.htm
.........\.......\...\ELC.lnp
.........\.......\...\ELC.plg
.........\.......\...\ELC.sct
.........\.......\...\ELC.tra
.........\.......\...\ExtDll.iex
.........\.......\...\exti.crf
.........\.......\...\exti.d
.........\.......\...\exti.o
.........\.......\...\flash.crf
.........\.......\...\flash.d
.........\.......\...\flash.o
.........\.......\...\main.crf
.........\.......\...\main.d
.........\.......\...\main.o
.........\.......\...\main.__i
.........\.......\...\rtc.crf
.........\.......\...\rtc.d
.........\.......\...\rtc.o
.........\.......\...\startup_stm32f10x_md.d
.........\.......\...\startup_stm32f10x_md.o
.........\.......\...\stm32f10x_it.crf
.........\.......\...\stm32f10x_it.d
.........\.......\...\stm32f10x_it.o
.........\.......\...\system_stm32f10x.crf
.........\.......\...\system_stm32f10x.d
.........\.......\...\system_stm32f10x.o
.........\.......\...\systime.crf
.........\.......\...\systime.d
.........\.......\...\systime.o
.........\.......\...\sys_configuration.crf
.........\.......\...\sys_configuration.d
.........\.......\...\sys_configuration.o
.........\.......\...\sys_configuration.__i
.........\.......\...\usart.crf
.........\.......\...\usart.d

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