stm32各种波形产生

可以生成正弦波，锯齿波，三角波，方波，且可添加随机噪声（基于adc噪声）。采用TIM DMA DAC方式输出，频率精度可调。

 属性            大小     日期    时间   名称
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     目录            0  2018-01-28 17:30  dac_out - 副本\
     目录            0  2018-01-28 17:28  dac_out - 副本\APP\
     文件         2438  2018-01-26 01:39  dac_out - 副本\APP\adcrand.c
     文件          204  2017-03-15 01:09  dac_out - 副本\APP\adcrand.h
     文件         4066  2018-01-26 01:39  dac_out - 副本\APP\dacout.c
     文件          570  2017-04-14 11:28  dac_out - 副本\APP\dacout.h
     文件          534  2016-12-30 23:43  dac_out - 副本\APP\led.c
     文件          129  2016-12-25 18:16  dac_out - 副本\APP\led.h
     文件         2084  2016-12-01 12:00  dac_out - 副本\APP\printf.c
     文件          147  2015-07-28 15:49  dac_out - 副本\APP\printf.h
     文件         2614  2016-12-25 19:05  dac_out - 副本\APP\rtc.c
     文件          156  2016-12-25 18:05  dac_out - 副本\APP\rtc.h
     文件          674  2016-10-10 13:48  dac_out - 副本\APP\systick.c
     文件          122  2016-10-10 13:45  dac_out - 副本\APP\systick.h
     目录            0  2018-01-28 17:28  dac_out - 副本\Libraries\
     目录            0  2018-01-28 17:28  dac_out - 副本\Libraries\CMSIS\
     目录            0  2018-01-28 17:28  dac_out - 副本\Libraries\CMSIS\CM3\
     目录            0  2018-01-28 17:28  dac_out - 副本\Libraries\CMSIS\CM3\CoreSupport\
     文件        17273  2015-12-04 15:57  dac_out - 副本\Libraries\CMSIS\CM3\CoreSupport\core_cm3.c
     文件        85714  2015-12-04 15:57  dac_out - 副本\Libraries\CMSIS\CM3\CoreSupport\core_cm3.h
     目录            0  2018-01-28 17:28  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\
     目录            0  2018-01-28 17:28  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\
     目录            0  2018-01-28 17:28  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\
     文件        26297  2015-12-04 15:57  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\Release_Notes.html
     目录            0  2018-01-28 17:28  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\startup\
     目录            0  2018-01-28 17:28  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\startup\arm\
     文件        15766  2015-12-04 15:57  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\startup\arm\startup_stm32f10x_cl.s
     文件        15503  2015-12-04 15:57  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\startup\arm\startup_stm32f10x_hd.s
     文件        15692  2015-12-04 15:57  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\startup\arm\startup_stm32f10x_hd_vl.s
     文件        12376  2015-12-04 15:57  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\startup\arm\startup_stm32f10x_ld.s
     文件        13656  2015-12-04 15:57  dac_out - 副本\Libraries\CMSIS\CM3\DeviceSupport\ST\STM32F10x\startup\arm\startup_stm32f10x_ld_vl.s
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