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大家有没有做过利用stm32实现2048个点的快速傅里叶变换

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楼主
pengf|  楼主 | 2019-12-13 22:03 | 只看该作者 回帖奖励 |倒序浏览 |阅读模式
STM32, 快速傅里叶变换
大家有没有做过利用stm32实现2048个点的快速傅里叶变换

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沙发
morrisk| | 2019-12-13 22:06 | 只看该作者

根据网上现有资料，已经实现了1024个点的快速傅里叶变换，是通过使用ST官方提供的DSP库实现的。

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板凳
pengf|  楼主 | 2019-12-13 22:08 | 只看该作者
现在采集回来了2048个点的信息，想对这2048个点做FFT,所以官方的DSP库可能不能实现了，问下大家有没有好的建议。

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地板
xxmmi| | 2019-12-13 22:11 | 只看该作者
arm出的库应该支持吧，就是包含在cmsis中的那个dsp库

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5楼
pengf|  楼主 | 2019-12-13 22:15 | 只看该作者

这是我参考网上的写的变换1024个点

#include"stm32_public.h"

#include <math.h>
#include "stm32_dsp.h"

#define NPT 1024
#define PI2 6.28318530717959
#define Fs 46080
long lBufInArray[1024];
long lBufOutArray[1024];
unsigned long lBufMagArray[1024];

void InitBufInArray(void);
void GetPowerMag(void);


/*FFT¿ìËÙ¸µÀïÒ¶±ä»»²âÊÔ³ÌÐò*/
int main(){
        
        unsigned int i;
        unsigned int p=0;
        RCC_Config();
        
        power_on_3();              //开3V电源

        GPIO_Configuration();

        USART3_Configuration();

        NVIC_ConfigurationUSART();//中断优先级配置
        
        
        InitBufInArray();
        cr4_fft_1024_stm32(lBufOutArray, lBufInArray, NPT);
//         delay_ms(1);
        
        GetPowerMag();
        printf("i,\t\tP,\t\tMag\r\n");
        
        for(i=0;i < NPT/2;i++){
               
                printf("%d\t%d\t%ld\r\n",i,p,lBufMagArray);
                p += 45;
        }
        return 0;
        
        

}


/*******************************************************************/
void InitBufInArray()
{
    unsigned int i;
    float fx;
    for(i=0; i<NPT; i++)
    {
        fx = 1500 * sin(PI2 * i * 350.0 / Fs) +
             2700 * sin(PI2 * i * 8400.0 / Fs) +
             4000 * sin(PI2 * i * 18725.0 / Fs);
        lBufInArray = ((signed short)fx) << 16;
    }
}

//计算各次谐波幅值
//将lBufMagArray分解成实部（X）和虚部（Y），然后计算幅值
void GetPowerMag()
{
    int lX,lY;
    float X,Y,Mag;
    int i;
    for(i=0; i<NPT/2; i++)
    {
        lX  = (lBufOutArray << 16) >> 16;
        lY  = (lBufOutArray >> 16);
        X = NPT * ((float)lX) / 32768;
        Y = NPT * ((float)lY) / 32768;
        Mag = sqrt(X * X + Y * Y) / NPT;
        if(i == 0)
            lBufMagArray = (unsigned long)(Mag * 32768);
        else
            lBufMagArray = (unsigned long)(Mag * 65536);
    }
}

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6楼
pengf|  楼主 | 2019-12-13 22:18 | 只看该作者

这是官方提供的DSP库里的东西，我看了下就最大是1024个点

TableFFT_V7
        ;N=16
        DCW 0x4000,0x0000, 0x4000,0x0000, 0x4000,0x0000
        DCW 0xdd5d,0x3b21, 0x22a3,0x187e, 0x0000,0x2d41
        DCW 0xa57e,0x2d41, 0x0000,0x2d41, 0xc000,0x4000
        DCW 0xdd5d,0xe782, 0xdd5d,0x3b21, 0xa57e,0x2d41
        ; N=64
        DCW 0x4000,0x0000, 0x4000,0x0000, 0x4000,0x0000
        DCW 0x2aaa,0x1294, 0x396b,0x0646, 0x3249,0x0c7c
        DCW 0x11a8,0x238e, 0x3249,0x0c7c, 0x22a3,0x187e
        DCW 0xf721,0x3179, 0x2aaa,0x1294, 0x11a8,0x238e
        DCW 0xdd5d,0x3b21, 0x22a3,0x187e, 0x0000,0x2d41
        DCW 0xc695,0x3fb1, 0x1a46,0x1e2b, 0xee58,0x3537
        DCW 0xb4be,0x3ec5, 0x11a8,0x238e, 0xdd5d,0x3b21
        DCW 0xa963,0x3871, 0x08df,0x289a, 0xcdb7,0x3ec5
        DCW 0xa57e,0x2d41, 0x0000,0x2d41, 0xc000,0x4000
        DCW 0xa963,0x1e2b, 0xf721,0x3179, 0xb4be,0x3ec5
        DCW 0xb4be,0x0c7c, 0xee58,0x3537, 0xac61,0x3b21
        DCW 0xc695,0xf9ba, 0xe5ba,0x3871, 0xa73b,0x3537
        DCW 0xdd5d,0xe782, 0xdd5d,0x3b21, 0xa57e,0x2d41
        DCW 0xf721,0xd766, 0xd556,0x3d3f, 0xa73b,0x238e
        DCW 0x11a8,0xcac9, 0xcdb7,0x3ec5, 0xac61,0x187e
        DCW 0x2aaa,0xc2c1, 0xc695,0x3fb1, 0xb4be,0x0c7c
        ; N=256
        DCW 0x4000,0x0000, 0x4000,0x0000, 0x4000,0x0000
        DCW 0x3b1e,0x04b5, 0x3e69,0x0192, 0x3cc8,0x0324
        DCW 0x35eb,0x0964, 0x3cc8,0x0324, 0x396b,0x0646
        DCW 0x306c,0x0e06, 0x3b1e,0x04b5, 0x35eb,0x0964
        DCW 0x2aaa,0x1294, 0x396b,0x0646, 0x3249,0x0c7c
        DCW 0x24ae,0x1709, 0x37af,0x07d6, 0x2e88,0x0f8d
        DCW 0x1e7e,0x1b5d, 0x35eb,0x0964, 0x2aaa,0x1294
        DCW 0x1824,0x1f8c, 0x341e,0x0af1, 0x26b3,0x1590
        DCW 0x11a8,0x238e, 0x3249,0x0c7c, 0x22a3,0x187e
        DCW 0x0b14,0x2760, 0x306c,0x0e06, 0x1e7e,0x1b5d
        DCW 0x0471,0x2afb, 0x2e88,0x0f8d, 0x1a46,0x1e2b
        DCW 0xfdc7,0x2e5a, 0x2c9d,0x1112, 0x15fe,0x20e7
        DCW 0xf721,0x3179, 0x2aaa,0x1294, 0x11a8,0x238e
        DCW 0xf087,0x3453, 0x28b2,0x1413, 0x0d48,0x2620
        DCW 0xea02,0x36e5, 0x26b3,0x1590, 0x08df,0x289a
        DCW 0xe39c,0x392b, 0x24ae,0x1709, 0x0471,0x2afb
        DCW 0xdd5d,0x3b21, 0x22a3,0x187e, 0x0000,0x2d41
        DCW 0xd74e,0x3cc5, 0x2093,0x19ef, 0xfb8f,0x2f6c
        DCW 0xd178,0x3e15, 0x1e7e,0x1b5d, 0xf721,0x3179
        DCW 0xcbe2,0x3f0f, 0x1c64,0x1cc6, 0xf2b8,0x3368
        DCW 0xc695,0x3fb1, 0x1a46,0x1e2b, 0xee58,0x3537
        DCW 0xc197,0x3ffb, 0x1824,0x1f8c, 0xea02,0x36e5
        DCW 0xbcf0,0x3fec, 0x15fe,0x20e7, 0xe5ba,0x3871
        DCW 0xb8a6,0x3f85, 0x13d5,0x223d, 0xe182,0x39db
        DCW 0xb4be,0x3ec5, 0x11a8,0x238e, 0xdd5d,0x3b21
        DCW 0xb140,0x3daf, 0x0f79,0x24da, 0xd94d,0x3c42
        DCW 0xae2e,0x3c42, 0x0d48,0x2620, 0xd556,0x3d3f
        DCW 0xab8e,0x3a82, 0x0b14,0x2760, 0xd178,0x3e15
        DCW 0xa963,0x3871, 0x08df,0x289a, 0xcdb7,0x3ec5
        DCW 0xa7b1,0x3612, 0x06a9,0x29ce, 0xca15,0x3f4f
        DCW 0xa678,0x3368, 0x0471,0x2afb, 0xc695,0x3fb1
        DCW 0xa5bc,0x3076, 0x0239,0x2c21, 0xc338,0x3fec
        DCW 0xa57e,0x2d41, 0x0000,0x2d41, 0xc000,0x4000
        DCW 0xa5bc,0x29ce, 0xfdc7,0x2e5a, 0xbcf0,0x3fec
        DCW 0xa678,0x2620, 0xfb8f,0x2f6c, 0xba09,0x3fb1
        DCW 0xa7b1,0x223d, 0xf957,0x3076, 0xb74d,0x3f4f
        DCW 0xa963,0x1e2b, 0xf721,0x3179, 0xb4be,0x3ec5
        DCW 0xab8e,0x19ef, 0xf4ec,0x3274, 0xb25e,0x3e15
        DCW 0xae2e,0x1590, 0xf2b8,0x3368, 0xb02d,0x3d3f
        DCW 0xb140,0x1112, 0xf087,0x3453, 0xae2e,0x3c42
        DCW 0xb4be,0x0c7c, 0xee58,0x3537, 0xac61,0x3b21
        DCW 0xb8a6,0x07d6, 0xec2b,0x3612, 0xaac8,0x39db
        DCW 0xbcf0,0x0324, 0xea02,0x36e5, 0xa963,0x3871
        DCW 0xc197,0xfe6e, 0xe7dc,0x37b0, 0xa834,0x36e5
        DCW 0xc695,0xf9ba, 0xe5ba,0x3871, 0xa73b,0x3537
        DCW 0xcbe2,0xf50f, 0xe39c,0x392b, 0xa678,0x3368
        DCW 0xd178,0xf073, 0xe182,0x39db, 0xa5ed,0x3179
        DCW 0xd74e,0xebed, 0xdf6d,0x3a82, 0xa599,0x2f6c
        DCW 0xdd5d,0xe782, 0xdd5d,0x3b21, 0xa57e,0x2d41
        DCW 0xe39c,0xe33a, 0xdb52,0x3bb6, 0xa599,0x2afb
        DCW 0xea02,0xdf19, 0xd94d,0x3c42, 0xa5ed,0x289a
        DCW 0xf087,0xdb26, 0xd74e,0x3cc5, 0xa678,0x2620
        DCW 0xf721,0xd766, 0xd556,0x3d3f, 0xa73b,0x238e
        DCW 0xfdc7,0xd3df, 0xd363,0x3daf, 0xa834,0x20e7
        DCW 0x0471,0xd094, 0xd178,0x3e15, 0xa963,0x1e2b
        DCW 0x0b14,0xcd8c, 0xcf94,0x3e72, 0xaac8,0x1b5d
        DCW 0x11a8,0xcac9, 0xcdb7,0x3ec5, 0xac61,0x187e
        DCW 0x1824,0xc850, 0xcbe2,0x3f0f, 0xae2e,0x1590
        DCW 0x1e7e,0xc625, 0xca15,0x3f4f, 0xb02d,0x1294
        DCW 0x24ae,0xc44a, 0xc851,0x3f85, 0xb25e,0x0f8d
        DCW 0x2aaa,0xc2c1, 0xc695,0x3fb1, 0xb4be,0x0c7c
        DCW 0x306c,0xc18e, 0xc4e2,0x3fd4, 0xb74d,0x0964
        DCW 0x35eb,0xc0b1, 0xc338,0x3fec, 0xba09,0x0646
        DCW 0x3b1e,0xc02c, 0xc197,0x3ffb, 0xbcf0,0x0324
                ; N=1024
        DCW 0x4000,0x0000, 0x4000,0x0000, 0x4000,0x0000
        DCW 0x3ed0,0x012e, 0x3f9b,0x0065, 0x3f36,0x00c9
        DCW 0x3d9a,0x025b, 0x3f36,0x00c9, 0x3e69,0x0192
        DCW 0x3c5f,0x0388, 0x3ed0,0x012e, 0x3d9a,0x025b
        DCW 0x3b1e,0x04b5, 0x3e69,0x0192, 0x3cc8,0x0324
        DCW 0x39d9,0x05e2, 0x3e02,0x01f7, 0x3bf4,0x03ed
        DCW 0x388e,0x070e, 0x3d9a,0x025b, 0x3b1e,0x04b5
        DCW 0x373f,0x0839, 0x3d31,0x02c0, 0x3a46,0x057e
        DCW 0x35eb,0x0964, 0x3cc8,0x0324, 0x396b,0x0646
        DCW 0x3492,0x0a8e, 0x3c5f,0x0388, 0x388e,0x070e
        DCW 0x3334,0x0bb7, 0x3bf4,0x03ed, 0x37af,0x07d6
        DCW 0x31d2,0x0cdf, 0x3b8a,0x0451, 0x36ce,0x089d
        DCW 0x306c,0x0e06, 0x3b1e,0x04b5, 0x35eb,0x0964
        DCW 0x2f02,0x0f2b, 0x3ab2,0x051a, 0x3505,0x0a2b
        DCW 0x2d93,0x1050, 0x3a46,0x057e, 0x341e,0x0af1
        DCW 0x2c21,0x1173, 0x39d9,0x05e2, 0x3334,0x0bb7
        DCW 0x2aaa,0x1294, 0x396b,0x0646, 0x3249,0x0c7c
        DCW 0x2931,0x13b4, 0x38fd,0x06aa, 0x315b,0x0d41
        DCW 0x27b3,0x14d2, 0x388e,0x070e, 0x306c,0x0e06
        DCW 0x2632,0x15ee, 0x381f,0x0772, 0x2f7b,0x0eca
        DCW 0x24ae,0x1709, 0x37af,0x07d6, 0x2e88,0x0f8d
        DCW 0x2326,0x1821, 0x373f,0x0839, 0x2d93,0x1050
        DCW 0x219c,0x1937, 0x36ce,0x089d, 0x2c9d,0x1112
        DCW 0x200e,0x1a4b, 0x365d,0x0901, 0x2ba4,0x11d3
        DCW 0x1e7e,0x1b5d, 0x35eb,0x0964, 0x2aaa,0x1294
        DCW 0x1ceb,0x1c6c, 0x3578,0x09c7, 0x29af,0x1354
        DCW 0x1b56,0x1d79, 0x3505,0x0a2b, 0x28b2,0x1413
        DCW 0x19be,0x1e84, 0x3492,0x0a8e, 0x27b3,0x14d2
        DCW 0x1824,0x1f8c, 0x341e,0x0af1, 0x26b3,0x1590
        DCW 0x1688,0x2091, 0x33a9,0x0b54, 0x25b1,0x164c
        DCW 0x14ea,0x2193, 0x3334,0x0bb7, 0x24ae,0x1709
        DCW 0x134a,0x2292, 0x32bf,0x0c1a, 0x23a9,0x17c4
        DCW 0x11a8,0x238e, 0x3249,0x0c7c, 0x22a3,0x187e
        DCW 0x1005,0x2488, 0x31d2,0x0cdf, 0x219c,0x1937
        DCW 0x0e61,0x257e, 0x315b,0x0d41, 0x2093,0x19ef
        DCW 0x0cbb,0x2671, 0x30e4,0x0da4, 0x1f89,0x1aa7
        DCW 0x0b14,0x2760, 0x306c,0x0e06, 0x1e7e,0x1b5d
        DCW 0x096d,0x284c, 0x2ff4,0x0e68, 0x1d72,0x1c12
        DCW 0x07c4,0x2935, 0x2f7b,0x0eca, 0x1c64,0x1cc6
        DCW 0x061b,0x2a1a, 0x2f02,0x0f2b, 0x1b56,0x1d79
        DCW 0x0471,0x2afb, 0x2e88,0x0f8d, 0x1a46,0x1e2b
        DCW 0x02c7,0x2bd8, 0x2e0e,0x0fee, 0x1935,0x1edc
        DCW 0x011c,0x2cb2, 0x2d93,0x1050, 0x1824,0x1f8c
        DCW 0xff72,0x2d88, 0x2d18,0x10b1, 0x1711,0x203a
        DCW 0xfdc7,0x2e5a, 0x2c9d,0x1112, 0x15fe,0x20e7
        DCW 0xfc1d,0x2f28, 0x2c21,0x1173, 0x14ea,0x2193
        DCW 0xfa73,0x2ff2, 0x2ba4,0x11d3, 0x13d5,0x223d
        DCW 0xf8ca,0x30b8, 0x2b28,0x1234, 0x12bf,0x22e7
        DCW 0xf721,0x3179, 0x2aaa,0x1294, 0x11a8,0x238e
        DCW 0xf579,0x3236, 0x2a2d,0x12f4, 0x1091,0x2435
        DCW 0xf3d2,0x32ef, 0x29af,0x1354, 0x0f79,0x24da
        DCW 0xf22c,0x33a3, 0x2931,0x13b4, 0x0e61,0x257e
        DCW 0xf087,0x3453, 0x28b2,0x1413, 0x0d48,0x2620
        DCW 0xeee3,0x34ff, 0x2833,0x1473, 0x0c2e,0x26c1
        DCW 0xed41,0x35a5, 0x27b3,0x14d2, 0x0b14,0x2760
        DCW 0xeba1,0x3648, 0x2733,0x1531, 0x09fa,0x27fe
        DCW 0xea02,0x36e5, 0x26b3,0x1590, 0x08df,0x289a
        DCW 0xe865,0x377e, 0x2632,0x15ee, 0x07c4,0x2935
        DCW 0xe6cb,0x3812, 0x25b1,0x164c, 0x06a9,0x29ce
        DCW 0xe532,0x38a1, 0x252f,0x16ab, 0x058d,0x2a65
        DCW 0xe39c,0x392b, 0x24ae,0x1709, 0x0471,0x2afb
        DCW 0xe208,0x39b0, 0x242b,0x1766, 0x0355,0x2b8f
        DCW 0xe077,0x3a30, 0x23a9,0x17c4, 0x0239,0x2c21
        DCW 0xdee9,0x3aab, 0x2326,0x1821, 0x011c,0x2cb2
        DCW 0xdd5d,0x3b21, 0x22a3,0x187e, 0x0000,0x2d41
        DCW 0xdbd5,0x3b92, 0x221f,0x18db, 0xfee4,0x2dcf
        DCW 0xda4f,0x3bfd, 0x219c,0x1937, 0xfdc7,0x2e5a
        DCW 0xd8cd,0x3c64, 0x2117,0x1993, 0xfcab,0x2ee4
        DCW 0xd74e,0x3cc5, 0x2093,0x19ef, 0xfb8f,0x2f6c
        DCW 0xd5d3,0x3d21, 0x200e,0x1a4b, 0xfa73,0x2ff2
        DCW 0xd45c,0x3d78, 0x1f89,0x1aa7, 0xf957,0x3076
        DCW 0xd2e8,0x3dc9, 0x1f04,0x1b02, 0xf83c,0x30f9
        DCW 0xd178,0x3e15, 0x1e7e,0x1b5d, 0xf721,0x3179
        DCW 0xd00c,0x3e5c, 0x1df8,0x1bb8, 0xf606,0x31f8
        DCW 0xcea5,0x3e9d, 0x1d72,0x1c12, 0xf4ec,0x3274
        DCW 0xcd41,0x3ed8, 0x1ceb,0x1c6c, 0xf3d2,0x32ef
        DCW 0xcbe2,0x3f0f, 0x1c64,0x1cc6, 0xf2b8,0x3368
        DCW 0xca88,0x3f40, 0x1bdd,0x1d20, 0xf19f,0x33df
        DCW 0xc932,0x3f6b, 0x1b56,0x1d79, 0xf087,0x3453
        DCW 0xc7e1,0x3f91, 0x1ace,0x1dd3, 0xef6f,0x34c6
        DCW 0xc695,0x3fb1, 0x1a46,0x1e2b, 0xee58,0x3537
        DCW 0xc54e,0x3fcc, 0x19be,0x1e84, 0xed41,0x35a5
        DCW 0xc40c,0x3fe1, 0x1935,0x1edc, 0xec2b,0x3612
        DCW 0xc2cf,0x3ff1, 0x18ad,0x1f34, 0xeb16,0x367d
        DCW 0xc197,0x3ffb, 0x1824,0x1f8c, 0xea02,0x36e5
        DCW 0xc065,0x4000, 0x179b,0x1fe3, 0xe8ef,0x374b
        DCW 0xbf38,0x3fff, 0x1711,0x203a, 0xe7dc,0x37b0
        DCW 0xbe11,0x3ff8, 0x1688,0x2091, 0xe6cb,0x3812
        DCW 0xbcf0,0x3fec, 0x15fe,0x20e7, 0xe5ba,0x3871
        DCW 0xbbd4,0x3fdb, 0x1574,0x213d, 0xe4aa,0x38cf
        DCW 0xbabf,0x3fc4, 0x14ea,0x2193, 0xe39c,0x392b
        DCW 0xb9af,0x3fa7, 0x145f,0x21e8, 0xe28e,0x3984
        DCW 0xb8a6,0x3f85, 0x13d5,0x223d, 0xe182,0x39db
        DCW 0xb7a2,0x3f5d, 0x134a,0x2292, 0xe077,0x3a30
        DCW 0xb6a5,0x3f30, 0x12bf,0x22e7, 0xdf6d,0x3a82
        DCW 0xb5af,0x3efd, 0x1234,0x233b, 0xde64,0x3ad3
        DCW 0xb4be,0x3ec5, 0x11a8,0x238e, 0xdd5d,0x3b21
        DCW 0xb3d5,0x3e88, 0x111d,0x23e2, 0xdc57,0x3b6d
        DCW 0xb2f2,0x3e45, 0x1091,0x2435, 0xdb52,0x3bb6
        DCW 0xb215,0x3dfc, 0x1005,0x2488, 0xda4f,0x3bfd
        DCW 0xb140,0x3daf, 0x0f79,0x24da, 0xd94d,0x3c42
        DCW 0xb071,0x3d5b, 0x0eed,0x252c, 0xd84d,0x3c85
        DCW 0xafa9,0x3d03, 0x0e61,0x257e, 0xd74e,0x3cc5
        DCW 0xaee8,0x3ca5, 0x0dd4,0x25cf, 0xd651,0x3d03
        DCW 0xae2e,0x3c42, 0x0d48,0x2620, 0xd556,0x3d3f
        DCW 0xad7b,0x3bda, 0x0cbb,0x2671, 0xd45c,0x3d78
        DCW 0xacd0,0x3b6d, 0x0c2e,0x26c1, 0xd363,0x3daf
        DCW 0xac2b,0x3afa, 0x0ba1,0x2711, 0xd26d,0x3de3
        DCW 0xab8e,0x3a82, 0x0b14,0x2760, 0xd178,0x3e15
        DCW 0xaaf8,0x3a06, 0x0a87,0x27af, 0xd085,0x3e45
        DCW 0xaa6a,0x3984, 0x09fa,0x27fe, 0xcf94,0x3e72
        DCW 0xa9e3,0x38fd, 0x096d,0x284c, 0xcea5,0x3e9d
        DCW 0xa963,0x3871, 0x08df,0x289a, 0xcdb7,0x3ec5
        DCW 0xa8eb,0x37e1, 0x0852,0x28e7, 0xcccc,0x3eeb
        DCW 0xa87b,0x374b, 0x07c4,0x2935, 0xcbe2,0x3f0f
        DCW 0xa812,0x36b1, 0x0736,0x2981, 0xcafb,0x3f30
        DCW 0xa7b1,0x3612, 0x06a9,0x29ce, 0xca15,0x3f4f
        DCW 0xa757,0x356e, 0x061b,0x2a1a, 0xc932,0x3f6b
        DCW 0xa705,0x34c6, 0x058d,0x2a65, 0xc851,0x3f85
        DCW 0xa6bb,0x3419, 0x04ff,0x2ab0, 0xc772,0x3f9c
        DCW 0xa678,0x3368, 0x0471,0x2afb, 0xc695,0x3fb1
        DCW 0xa63e,0x32b2, 0x03e3,0x2b45, 0xc5ba,0x3fc4
        DCW 0xa60b,0x31f8, 0x0355,0x2b8f, 0xc4e2,0x3fd4
        DCW 0xa5e0,0x3139, 0x02c7,0x2bd8, 0xc40c,0x3fe1
        DCW 0xa5bc,0x3076, 0x0239,0x2c21, 0xc338,0x3fec
        DCW 0xa5a1,0x2faf, 0x01aa,0x2c6a, 0xc266,0x3ff5
        DCW 0xa58d,0x2ee4, 0x011c,0x2cb2, 0xc197,0x3ffb
        DCW 0xa581,0x2e15, 0x008e,0x2cfa, 0xc0ca,0x3fff
        DCW 0xa57e,0x2d41, 0x0000,0x2d41, 0xc000,0x4000
        DCW 0xa581,0x2c6a, 0xff72,0x2d88, 0xbf38,0x3fff
        DCW 0xa58d,0x2b8f, 0xfee4,0x2dcf, 0xbe73,0x3ffb
        DCW 0xa5a1,0x2ab0, 0xfe56,0x2e15, 0xbdb0,0x3ff5
        DCW 0xa5bc,0x29ce, 0xfdc7,0x2e5a, 0xbcf0,0x3fec
        DCW 0xa5e0,0x28e7, 0xfd39,0x2e9f, 0xbc32,0x3fe1
        DCW 0xa60b,0x27fe, 0xfcab,0x2ee4, 0xbb77,0x3fd4
        DCW 0xa63e,0x2711, 0xfc1d,0x2f28, 0xbabf,0x3fc4
        DCW 0xa678,0x2620, 0xfb8f,0x2f6c, 0xba09,0x3fb1
        DCW 0xa6bb,0x252c, 0xfb01,0x2faf, 0xb956,0x3f9c
        DCW 0xa705,0x2435, 0xfa73,0x2ff2, 0xb8a6,0x3f85
        DCW 0xa757,0x233b, 0xf9e5,0x3034, 0xb7f8,0x3f6b
        DCW 0xa7b1,0x223d, 0xf957,0x3076, 0xb74d,0x3f4f
        DCW 0xa812,0x213d, 0xf8ca,0x30b8, 0xb6a5,0x3f30
        DCW 0xa87b,0x203a, 0xf83c,0x30f9, 0xb600,0x3f0f
        DCW 0xa8eb,0x1f34, 0xf7ae,0x3139, 0xb55e,0x3eeb
        DCW 0xa963,0x1e2b, 0xf721,0x3179, 0xb4be,0x3ec5
        DCW 0xa9e3,0x1d20, 0xf693,0x31b9, 0xb422,0x3e9d
        DCW 0xaa6a,0x1c12, 0xf606,0x31f8, 0xb388,0x3e72
        DCW 0xaaf8,0x1b02, 0xf579,0x3236, 0xb2f2,0x3e45
        DCW 0xab8e,0x19ef, 0xf4ec,0x3274, 0xb25e,0x3e15
        DCW 0xac2b,0x18db, 0xf45f,0x32b2, 0xb1cd,0x3de3
        DCW 0xacd0,0x17c4, 0xf3d2,0x32ef, 0xb140,0x3daf
        DCW 0xad7b,0x16ab, 0xf345,0x332c, 0xb0b5,0x3d78
        DCW 0xae2e,0x1590, 0xf2b8,0x3368, 0xb02d,0x3d3f
        DCW 0xaee8,0x1473, 0xf22c,0x33a3, 0xafa9,0x3d03
        DCW 0xafa9,0x1354, 0xf19f,0x33df, 0xaf28,0x3cc5
        DCW 0xb071,0x1234, 0xf113,0x3419, 0xaea9,0x3c85
        DCW 0xb140,0x1112, 0xf087,0x3453, 0xae2e,0x3c42
        DCW 0xb215,0x0fee, 0xeffb,0x348d, 0xadb6,0x3bfd
        DCW 0xb2f2,0x0eca, 0xef6f,0x34c6, 0xad41,0x3bb6
        DCW 0xb3d5,0x0da4, 0xeee3,0x34ff, 0xacd0,0x3b6d
        DCW 0xb4be,0x0c7c, 0xee58,0x3537, 0xac61,0x3b21
        DCW 0xb5af,0x0b54, 0xedcc,0x356e, 0xabf6,0x3ad3
        DCW 0xb6a5,0x0a2b, 0xed41,0x35a5, 0xab8e,0x3a82
        DCW 0xb7a2,0x0901, 0xecb6,0x35dc, 0xab29,0x3a30
        DCW 0xb8a6,0x07d6, 0xec2b,0x3612, 0xaac8,0x39db
        DCW 0xb9af,0x06aa, 0xeba1,0x3648, 0xaa6a,0x3984
        DCW 0xbabf,0x057e, 0xeb16,0x367d, 0xaa0f,0x392b
        DCW 0xbbd4,0x0451, 0xea8c,0x36b1, 0xa9b7,0x38cf
        DCW 0xbcf0,0x0324, 0xea02,0x36e5, 0xa963,0x3871
        DCW 0xbe11,0x01f7, 0xe978,0x3718, 0xa912,0x3812
        DCW 0xbf38,0x00c9, 0xe8ef,0x374b, 0xa8c5,0x37b0
        DCW 0xc065,0xff9b, 0xe865,0x377e, 0xa87b,0x374b
        DCW 0xc197,0xfe6e, 0xe7dc,0x37b0, 0xa834,0x36e5
        DCW 0xc2cf,0xfd40, 0xe753,0x37e1, 0xa7f1,0x367d
        DCW 0xc40c,0xfc13, 0xe6cb,0x3812, 0xa7b1,0x3612
        DCW 0xc54e,0xfae6, 0xe642,0x3842, 0xa774,0x35a5
        DCW 0xc695,0xf9ba, 0xe5ba,0x3871, 0xa73b,0x3537
        DCW 0xc7e1,0xf88e, 0xe532,0x38a1, 0xa705,0x34c6
        DCW 0xc932,0xf763, 0xe4aa,0x38cf, 0xa6d3,0x3453
        DCW 0xca88,0xf639, 0xe423,0x38fd, 0xa6a4,0x33df
        DCW 0xcbe2,0xf50f, 0xe39c,0x392b, 0xa678,0x3368
        DCW 0xcd41,0xf3e6, 0xe315,0x3958, 0xa650,0x32ef
        DCW 0xcea5,0xf2bf, 0xe28e,0x3984, 0xa62c,0x3274
        DCW 0xd00c,0xf198, 0xe208,0x39b0, 0xa60b,0x31f8
        DCW 0xd178,0xf073, 0xe182,0x39db, 0xa5ed,0x3179
        DCW 0xd2e8,0xef4f, 0xe0fc,0x3a06, 0xa5d3,0x30f9
        DCW 0xd45c,0xee2d, 0xe077,0x3a30, 0xa5bc,0x3076
        DCW 0xd5d3,0xed0c, 0xdff2,0x3a59, 0xa5a9,0x2ff2
        DCW 0xd74e,0xebed, 0xdf6d,0x3a82, 0xa599,0x2f6c
        DCW 0xd8cd,0xeacf, 0xdee9,0x3aab, 0xa58d,0x2ee4
        DCW 0xda4f,0xe9b4, 0xde64,0x3ad3, 0xa585,0x2e5a
        DCW 0xdbd5,0xe89a, 0xdde1,0x3afa, 0xa57f,0x2dcf
        DCW 0xdd5d,0xe782, 0xdd5d,0x3b21, 0xa57e,0x2d41
        DCW 0xdee9,0xe66d, 0xdcda,0x3b47, 0xa57f,0x2cb2
        DCW 0xe077,0xe559, 0xdc57,0x3b6d, 0xa585,0x2c21
        DCW 0xe208,0xe448, 0xdbd5,0x3b92, 0xa58d,0x2b8f
        DCW 0xe39c,0xe33a, 0xdb52,0x3bb6, 0xa599,0x2afb
        DCW 0xe532,0xe22d, 0xdad1,0x3bda, 0xa5a9,0x2a65
        DCW 0xe6cb,0xe124, 0xda4f,0x3bfd, 0xa5bc,0x29ce
        DCW 0xe865,0xe01d, 0xd9ce,0x3c20, 0xa5d3,0x2935
        DCW 0xea02,0xdf19, 0xd94d,0x3c42, 0xa5ed,0x289a
        DCW 0xeba1,0xde18, 0xd8cd,0x3c64, 0xa60b,0x27fe
        DCW 0xed41,0xdd19, 0xd84d,0x3c85, 0xa62c,0x2760
        DCW 0xeee3,0xdc1e, 0xd7cd,0x3ca5, 0xa650,0x26c1
        DCW 0xf087,0xdb26, 0xd74e,0x3cc5, 0xa678,0x2620
        DCW 0xf22c,0xda31, 0xd6cf,0x3ce4, 0xa6a4,0x257e
        DCW 0xf3d2,0xd93f, 0xd651,0x3d03, 0xa6d3,0x24da
        DCW 0xf579,0xd851, 0xd5d3,0x3d21, 0xa705,0x2435
        DCW 0xf721,0xd766, 0xd556,0x3d3f, 0xa73b,0x238e
        DCW 0xf8ca,0xd67f, 0xd4d8,0x3d5b, 0xa774,0x22e7
        DCW 0xfa73,0xd59b, 0xd45c,0x3d78, 0xa7b1,0x223d
        DCW 0xfc1d,0xd4bb, 0xd3df,0x3d93, 0xa7f1,0x2193
        DCW 0xfdc7,0xd3df, 0xd363,0x3daf, 0xa834,0x20e7
        DCW 0xff72,0xd306, 0xd2e8,0x3dc9, 0xa87b,0x203a
        DCW 0x011c,0xd231, 0xd26d,0x3de3, 0xa8c5,0x1f8c
        DCW 0x02c7,0xd161, 0xd1f2,0x3dfc, 0xa912,0x1edc
        DCW 0x0471,0xd094, 0xd178,0x3e15, 0xa963,0x1e2b
        DCW 0x061b,0xcfcc, 0xd0fe,0x3e2d, 0xa9b7,0x1d79
        DCW 0x07c4,0xcf07, 0xd085,0x3e45, 0xaa0f,0x1cc6
        DCW 0x096d,0xce47, 0xd00c,0x3e5c, 0xaa6a,0x1c12
        DCW 0x0b14,0xcd8c, 0xcf94,0x3e72, 0xaac8,0x1b5d
        DCW 0x0cbb,0xccd4, 0xcf1c,0x3e88, 0xab29,0x1aa7
        DCW 0x0e61,0xcc21, 0xcea5,0x3e9d, 0xab8e,0x19ef
        DCW 0x1005,0xcb73, 0xce2e,0x3eb1, 0xabf6,0x1937
        DCW 0x11a8,0xcac9, 0xcdb7,0x3ec5, 0xac61,0x187e
        DCW 0x134a,0xca24, 0xcd41,0x3ed8, 0xacd0,0x17c4
        DCW 0x14ea,0xc983, 0xcccc,0x3eeb, 0xad41,0x1709
        DCW 0x1688,0xc8e8, 0xcc57,0x3efd, 0xadb6,0x164c
        DCW 0x1824,0xc850, 0xcbe2,0x3f0f, 0xae2e,0x1590
        DCW 0x19be,0xc7be, 0xcb6e,0x3f20, 0xaea9,0x14d2
        DCW 0x1b56,0xc731, 0xcafb,0x3f30, 0xaf28,0x1413
        DCW 0x1ceb,0xc6a8, 0xca88,0x3f40, 0xafa9,0x1354
        DCW 0x1e7e,0xc625, 0xca15,0x3f4f, 0xb02d,0x1294
        DCW 0x200e,0xc5a7, 0xc9a3,0x3f5d, 0xb0b5,0x11d3
        DCW 0x219c,0xc52d, 0xc932,0x3f6b, 0xb140,0x1112
        DCW 0x2326,0xc4b9, 0xc8c1,0x3f78, 0xb1cd,0x1050
        DCW 0x24ae,0xc44a, 0xc851,0x3f85, 0xb25e,0x0f8d
        DCW 0x2632,0xc3e0, 0xc7e1,0x3f91, 0xb2f2,0x0eca
        DCW 0x27b3,0xc37b, 0xc772,0x3f9c, 0xb388,0x0e06
        DCW 0x2931,0xc31c, 0xc703,0x3fa7, 0xb422,0x0d41
        DCW 0x2aaa,0xc2c1, 0xc695,0x3fb1, 0xb4be,0x0c7c
        DCW 0x2c21,0xc26d, 0xc627,0x3fbb, 0xb55e,0x0bb7
        DCW 0x2d93,0xc21d, 0xc5ba,0x3fc4, 0xb600,0x0af1
        DCW 0x2f02,0xc1d3, 0xc54e,0x3fcc, 0xb6a5,0x0a2b
        DCW 0x306c,0xc18e, 0xc4e2,0x3fd4, 0xb74d,0x0964
        DCW 0x31d2,0xc14f, 0xc476,0x3fdb, 0xb7f8,0x089d
        DCW 0x3334,0xc115, 0xc40c,0x3fe1, 0xb8a6,0x07d6
        DCW 0x3492,0xc0e0, 0xc3a1,0x3fe7, 0xb956,0x070e
        DCW 0x35eb,0xc0b1, 0xc338,0x3fec, 0xba09,0x0646
        DCW 0x373f,0xc088, 0xc2cf,0x3ff1, 0xbabf,0x057e
        DCW 0x388e,0xc064, 0xc266,0x3ff5, 0xbb77,0x04b5
        DCW 0x39d9,0xc045, 0xc1fe,0x3ff8, 0xbc32,0x03ed
        DCW 0x3b1e,0xc02c, 0xc197,0x3ffb, 0xbcf0,0x0324
        DCW 0x3c5f,0xc019, 0xc130,0x3ffd, 0xbdb0,0x025b
        DCW 0x3d9a,0xc00b, 0xc0ca,0x3fff, 0xbe73,0x0192
        DCW 0x3ed0,0xc003, 0xc065,0x4000, 0xbf38,0x00c9
        
       END

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7楼
renyaq| | 2019-12-13 22:21 | 只看该作者

楼主，你如果弄懂 库的含义， 10240 个点都不是问题。
这里的 FFT  算法 开始最早是在ARM7上的。 记得源至于 美国的大学教授写的一部著作

后来移植到 ARM9 ,ARM9E, CORTEX-MX....

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8楼
renyaq| | 2019-12-13 22:24 | 只看该作者
可惜  他 没有写关于 FIR,IIR 等算法的 原理及系数如何产生。

IIR 我已经弄懂。  现在剩下FIR算法，NLMS算法的系数产生原理。这些算法非常好玩的。

FFT, IIR, FIR, NLMS 等 算法真是很好玩。  这些高森的算法应用到 它原本属于的领域。真是太有用处，太好玩了。

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9楼
houcs| | 2019-12-13 22:26 | 只看该作者
我记得STM32有FFT的库的，直接用库就好了。

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10楼
liuzaiy| | 2019-12-13 22:30 | 只看该作者

CMSIS里的FFT库好像支持最多4096个点的运算

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11楼
chenjunt| | 2019-12-13 22:36 | 只看该作者
STM32有FFT的库的

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12楼
guanjiaer| | 2020-1-8 16:08 | 只看该作者
我没有做过

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13楼
heimaojingzhang| | 2020-1-8 16:11 | 只看该作者
没处理过这么复杂的数据

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14楼
keaibukelian| | 2020-1-8 16:17 | 只看该作者
好像很复杂啊

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