This experiment will achieve the following functions: this experiment DS0 used to indicate the program to run, 400ms for a cycle. DS1 for timer interrupt counter, indicating the timer interrupt status, 1000ms for a cycle. After download, you can see the DS0 flash, DS1 slow flash.

STM32超声波测距
...............\CORE
...............\....\core_cm4.h
...............\....\core_cm4_simd.h
...............\....\startup_stm32f40_41xxx.s
...............\FWLIB
...............\.....\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_dma2d.h
...............\.....\...\stm32f4xx_exti.h
...............\.....\...\stm32f4xx_flash.h
...............\.....\...\stm32f4xx_flash_ramfunc.h
...............\.....\...\stm32f4xx_fmc.h
...............\.....\...\stm32f4xx_fsmc.h
...............\.....\...\stm32f4xx_gpio.h
...............\.....\...\stm32f4xx_hash.h
...............\.....\...\stm32f4xx_i2c.h
...............\.....\...\stm32f4xx_iwdg.h
...............\.....\...\stm32f4xx_ltdc.h
...............\.....\...\stm32f4xx_pwr.h
...............\.....\...\stm32f4xx_rcc.h
...............\.....\...\stm32f4xx_rng.h
...............\.....\...\stm32f4xx_rtc.h
...............\.....\...\stm32f4xx_sai.h
...............\.....\...\stm32f4xx_sdio.h
...............\.....\...\stm32f4xx_spi.h
...............\.....\...\stm32f4xx_syscfg.h
...............\.....\...\stm32f4xx_tim.h
...............\.....\...\stm32f4xx_usart.h
...............\.....\...\stm32f4xx_wwdg.h
...............\.....\src
...............\.....\...\misc.c
...............\.....\...\stm32f4xx_adc.c
...............\.....\...\stm32f4xx_can.c
...............\.....\...\stm32f4xx_crc.c
...............\.....\...\stm32f4xx_cryp.c
...............\.....\...\stm32f4xx_cryp_aes.c
...............\.....\...\stm32f4xx_cryp_des.c
...............\.....\...\stm32f4xx_cryp_tdes.c
...............\.....\...\stm32f4xx_dac.c
...............\.....\...\stm32f4xx_dbgmcu.c
...............\.....\...\stm32f4xx_dcmi.c
...............\.....\...\stm32f4xx_dma.c
...............\.....\...\stm32f4xx_dma2d.c
...............\.....\...\stm32f4xx_exti.c
...............\.....\...\stm32f4xx_flash.c
...............\.....\...\stm32f4xx_flash_ramfunc.c
...............\.....\...\stm32f4xx_fmc.c
...............\.....\...\stm32f4xx_fsmc.c
...............\.....\...\stm32f4xx_gpio.c
...............\.....\...\stm32f4xx_hash.c
...............\.....\...\stm32f4xx_hash_md5.c
...............\.....\...\stm32f4xx_hash_sha1.c
...............\.....\...\stm32f4xx_i2c.c
...............\.....\...\stm32f4xx_iwdg.c
...............\.....\...\stm32f4xx_ltdc.c
...............\.....\...\stm32f4xx_pwr.c
...............\.....\...\stm32f4xx_rcc.c
...............\.....\...\stm32f4xx_rng.c
...............\.....\...\stm32f4xx_rtc.c
...............\.....\...\stm32f4xx_sai.c
...............\.....\...\stm32f4xx_sdio.c
...............\.....\...\stm32f4xx_spi.c
...............\.....\...\stm32f4xx_syscfg.c
...............\.....\...\stm32f4xx_tim.c
...............\.....\...\stm32f4xx_usart.c
...............\.....\...\stm32f4xx_wwdg.c
...............\HARDWARE
...............\........\LED
...............\........\...\led.c
...............\........\...\led.h
...............\........\TIMER
...............\........\.....\timer.c
...............\........\.....\timer.h
...............\........\csbcj
...............\........\.....\csbcj.c
...............\........\.....\csbcj.h
...............\OBJ
...............\...\ExtDll.iex
...............\...\TIMER.axf
...............\...\TIMER.build_log.htm
...............\...\TIMER.hex
...............\...\TIMER.htm
...............\...\TIMER.lnp
...............\...\TIMER.map
...............\...\TIMER.sct
...............\...\csbcj.crf
...............\...\csbcj.d
...............\...\csbcj.o
...............\...\delay.crf
...............\...\delay.d
...............\...\delay.o

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