资源简介
2017年国赛的代码,基于stm32f4
代码片段和文件信息
/* ----------------------------------------------------------------------
* Copyright (C) 2010 ARM Limited. All rights reserved.
*
* $Date: 15. July 2011
* $Revision: V1.0.10
*
* Project: CMSIS DSP Library
* title: arm_cfft_radix4_f32.c
*
* Description: Radix-4 Decimation in Frequency CFFT & CIFFT Floating point processing function
*
*
* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
*
* Version 1.0.10 2011/7/15
* Big Endian support added and Merged M0 and M3/M4 Source code.
*
* Version 1.0.3 2010/11/29
* Re-organized the CMSIS folders and updated documentation.
*
* Version 1.0.2 2010/11/11
* Documentation updated.
*
* Version 1.0.1 2010/10/05
* Production release and review comments incorporated.
*
* Version 1.0.0 2010/09/20
* Production release and review comments incorporated.
*
* Version 0.0.5 2010/04/26
* incorporated review comments and updated with latest CMSIS layer
*
* Version 0.0.3 2010/03/10
* Initial version
* -------------------------------------------------------------------- */
#include “arm_math.h“
/**
* @ingroup groupTransforms
*/
/**
* @defgroup CFFT_CIFFT Complex FFT Functions
*
* \par
* Complex Fast Fourier Transform(CFFT) and Complex Inverse Fast Fourier Transform(CIFFT) is an efficient algorithm to compute Discrete Fourier Transform(DFT) and Inverse Discrete Fourier Transform(IDFT).
* Computational complexity of CFFT reduces drastically when compared to DFT.
* \par
* This set of functions implements CFFT/CIFFT
* for Q15 Q31 and floating-point data types. The functions operates on in-place buffer which uses same buffer for input and output.
* Complex input is stored in input buffer in an interleaved fashion.
*
* \par
* The functions operate on blocks of input and output data and each call to the function processes
* 2*fftLen
samples through the transform. pSrc
points to In-place arrays containing 2*fftLen
values.
* \par
* The pSrc
points to the array of in-place buffer of size 2*fftLen
and inputs and outputs are stored in an interleaved fashion as shown below.
* {real[0] imag[0] real[1] imag[1]..}
*
* \par Lengths supported by the transform:
* \par
* Internally the function utilize a radix-4 decimation in frequency(DIF) algorithm
* and the size of the FFT supported are of the lengths [16 64 256 1024].
*
*
* \par Algorithm:
*
* Complex Fast Fourier Transform:
* \par
* Input real and imaginary data:
*
* x(n) = xa + j * ya
* x(n+N/4 ) = xb + j * yb
* x(n+N/2 ) = xc + j * yc
* x(n+3N 4) = xd + j * yd
*
* where N is length of FFT
* \par
* Output real and
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
目录 0 2017-08-11 01:14 test 8-9\
目录 0 2017-08-09 14:49 test 8-9\CMSIS DSP_Library\
目录 0 2017-08-09 14:49 test 8-9\CMSIS DSP_Library\Include\
文件 4676 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\arm_common_tables.h
文件 3666 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\arm_const_structs.h
文件 242444 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\arm_math.h
文件 33042 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\core_cm0.h
文件 40429 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\core_cm0plus.h
文件 99832 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\core_cm3.h
文件 109142 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\core_cm4.h
文件 22735 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\core_cm4_simd.h
文件 17146 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\core_cmFunc.h
文件 20513 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\core_cmInstr.h
文件 41744 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\core_sc000.h
文件 98211 2014-07-17 21:52 test 8-9\CMSIS DSP_Library\Include\core_sc300.h
目录 0 2017-08-09 14:48 test 8-9\CMSIS DSP_Library\inc\
文件 1120 2011-10-28 10:31 test 8-9\CMSIS DSP_Library\inc\arm_common_tables.h
文件 240101 2017-07-22 19:38 test 8-9\CMSIS DSP_Library\inc\arm_math.h
文件 79281 2013-08-14 11:45 test 8-9\CMSIS DSP_Library\inc\core_cm4.h
文件 23979 2011-10-28 10:31 test 8-9\CMSIS DSP_Library\inc\core_cm4_simd.h
文件 23979 2011-10-28 10:31 test 8-9\CMSIS DSP_Library\inc\core_cm4_simd.h_215384109.bak
文件 15691 2011-10-28 10:31 test 8-9\CMSIS DSP_Library\inc\core_cmFunc.h
文件 16108 2011-10-28 10:31 test 8-9\CMSIS DSP_Library\inc\core_cmInstr.h
文件 1979 2011-07-26 10:34 test 8-9\CMSIS DSP_Library\inc\math_helper.h
目录 0 2017-08-09 14:49 test 8-9\CMSIS DSP_Library\src\
文件 35236 2011-07-26 10:34 test 8-9\CMSIS DSP_Library\src\arm_cfft_radix4_f32.c
文件 56446 2011-07-26 10:34 test 8-9\CMSIS DSP_Library\src\arm_cfft_radix4_init_f32.c
文件 22147 2011-07-26 10:34 test 8-9\CMSIS DSP_Library\src\arm_cfft_radix4_init_q15.c
文件 31111 2011-07-26 10:34 test 8-9\CMSIS DSP_Library\src\arm_cfft_radix4_init_q31.c
文件 58698 2011-07-26 10:34 test 8-9\CMSIS DSP_Library\src\arm_cfft_radix4_q15.c
文件 27856 2011-07-26 10:34 test 8-9\CMSIS DSP_Library\src\arm_cfft_radix4_q31.c
............此处省略343个文件信息
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