Stm32f407 signal generator input a sine wave, AD sampling, Da output and system frequency should is 10 times the frequency of the input waveform to guarantee that the above output waveform of integrity, the output frequency of the system can use oscilloscope to test out.

实验21 DAC实验\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\ADC\adc.c
..............\........\...\adc.h
..............\........\DAC\dac.c
..............\........\...\dac.h
..............\........\LCD\FONT.H
..............\........\...\lcd.c
..............\........\...\lcd.h
..............\........\.ED\led.c
..............\........\...\led.h
..............\........\TIMER\timer.c
..............\........\.....\timer.h
..............\keilkilll.bat
..............\OBJ\adc.crf
..............\...\adc.d
..............\...\adc.o
..............\...\DAC.axf
..............\...\DAC.build_log.htm
..............\...\dac.crf
..............\...\dac.d
..............\...\DAC.hex
..............\...\DAC.htm
..............\...\DAC.lnp
..............\...\DAC.map
..............\...\dac.o
..............\...\DAC.sct
..............\...\delay.crf
..............\...\delay.d
..............\...\delay.o
..............\...\ExtDll.iex
..............\...\key.crf

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