Embedded in keil project uses ultrasonic distance measurement using lpc1768

lcd显示加蜂鸣
.............\Debug
.............\Drivers
.............\.......\include
.............\.......\.......\lpc1768_rtc.h
.............\.......\.......\lpc1768_uart.h
.............\.......\.......\monitor.h
.............\.......\source
.............\.......\......\lpc1768_rtc.c
.............\.......\......\lpc1768_uart_polling.c
.............\.......\......\monitor.c
.............\JLinkLog.txt
.............\JLinkSettings.ini
.............\List
.............\....\ex3.map
.............\....\startup_LPC17xx.lst
.............\Obj
.............\...\24lc02.crf
.............\...\24lc02.d
.............\...\24lc02.o
.............\...\ExtDll.iex
.............\...\at45d161.__i
.............\...\at45d161.d
.............\...\bsp_config.crf
.............\...\bsp_config.d
.............\...\bsp_config.o
.............\...\buzzer.crf
.............\...\buzzer.d
.............\...\buzzer.o
.............\...\command.crf
.............\...\command.d
.............\...\command.o
.............\...\core_cm3.crf
.............\...\core_cm3.d
.............\...\core_cm3.o
.............\...\ds18b20.crf
.............\...\ds18b20.d
.............\...\ds18b20.o
.............\...\ex3.axf
.............\...\ex3.htm
.............\...\ex3.lnp
.............\...\ex3.plg
.............\...\ex3.sct
.............\...\ex3.tra
.............\...\joystick.crf
.............\...\joystick.d
.............\...\joystick.o
.............\...\lcd.crf
.............\...\lcd.d
.............\...\lcd.o
.............\...\lcd1602.crf
.............\...\lcd1602.d
.............\...\lcd1602.o
.............\...\led.crf
.............\...\led.d
.............\...\led.o
.............\...\lpc1768_adc.crf
.............\...\lpc1768_adc.d
.............\...\lpc1768_adc.o
.............\...\lpc1768_hc_sr04.crf
.............\...\lpc1768_hc_sr04.d
.............\...\lpc1768_hc_sr04.o
.............\...\lpc1768_i2c.crf
.............\...\lpc1768_i2c.d
.............\...\lpc1768_i2c.o
.............\...\lpc1768_rtc.crf
.............\...\lpc1768_rtc.d
.............\...\lpc1768_rtc.o
.............\...\lpc1768_timer.crf
.............\...\lpc1768_timer.d
.............\...\lpc1768_timer.o
.............\...\lpc1768_uart_interrupt.crf
.............\...\lpc1768_uart_interrupt.d
.............\...\lpc1768_uart_interrupt.o
.............\...\lpc1768_uart_polling.crf
.............\...\lpc1768_uart_polling.d
.............\...\lpc1768_uart_polling.o
.............\...\lpc17xx_spi.crf
.............\...\lpc17xx_spi.d
.............\...\lpc17xx_spi.o
.............\...\main.crf
.............\...\main.d
.............\...\main.o
.............\...\monitor.crf
.............\...\monitor.d
.............\...\monitor.o
.............\...\sd.__i
.............\...\sd.d
.............\...\sd_only.__i
.............\...\sd_only.d
.............\...\startup_LPC17xx.d
.............\...\startup_LPC17xx.o
.............\...\system_lpc17xx.crf
.............\...\system_lpc17xx.d
.............\...\system_lpc17xx.o
.............\...\tea5767.__i
.............\...\tea5767.crf
.............\...\tea5767.d
.............\...\w25q16.__i
.............\...\w25q16.d

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