用STM32频率计

简易的用STM32设计的频率计，有放大电路，电压比较器电路，和计数器电路，分频电路

x=[10020025730835640445150455360365370175080285390595010101101120213081406151616141712181319112032220424052617283030463314361040124523503355796089703580339037100861119712055132251410615015201122534830690350524090550740609467020480601907781002502076803084604057105069706045407097808035609081801017500105790011064001141100];
y=[1002002563073544024495025516006506987467988499009461005109611971301139915081606170318041901202121932393260428163031329735923992450150075550605769997991899010034111391199213158140361493420008252163053334872406965048060632698428018590309 997402066103068874036145043716014257060887994189035181012319105250011007841135287];
p1=polyfit（xy2）;%2次多项式拟合
x1=linspace（10011411001000000）;%在[100，1141100]取100个点
y1=polyval（p1x1）;%计算拟合多项式的值
plot（xy‘o‘x1y1‘r‘）;%绘制原始数据曲线和拟合曲线

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2014-07-27 23:23  Cymometer\
     目录           0  2014-08-10 14:38  Cymometer\1HZ至高频\
     文件         981  2014-08-10 14:21  Cymometer\1HZ至高频\ErrorCorrect.m
     目录           0  2014-07-27 13:25  Cymometer\1HZ至高频\LCD\
     文件       24750  2008-09-21 15:16  Cymometer\1HZ至高频\LCD\fonts.h
     文件       28686  2014-02-03 11:53  Cymometer\1HZ至高频\LCD\lcd.c
     文件        6769  2008-09-21 15:16  Cymometer\1HZ至高频\LCD\lcd.h
     目录           0  2014-07-27 13:25  Cymometer\1HZ至高频\library\
     文件        2225  2008-07-14 17:40  Cymometer\1HZ至高频\library\cortexm3_macro.h
     文件        4084  2008-06-13 15:00  Cymometer\1HZ至高频\library\platform_config.h
     文件       58563  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_adc.c
     文件       18854  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_adc.h
     文件       11170  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_bkp.c
     文件        6911  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_bkp.h
     文件       32053  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_can.c
     文件       12279  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_can.h
     文件        4615  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_crc.c
     文件        1881  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_crc.h
     文件       17175  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_dac.c
     文件        9598  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_dac.h
     文件        5222  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_dbgmcu.c
     文件        2859  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_dbgmcu.h
     文件       33291  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_dma.c
     文件       17974  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_dma.h
     文件        8742  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_exti.c
     文件        5776  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_exti.h
     文件       32684  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_flash.c
     文件       13996  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_flash.h
     文件       41592  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_fsmc.c
     文件       19041  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_fsmc.h
     文件       22558  2008-07-14 17:40  Cymometer\1HZ至高频\library\stm32f10x_gpio.c
............此处省略309个文件信息