From 2628932a40d769d8d0180ba6fed1e7b9b2718982 Mon Sep 17 00:00:00 2001 From: jaseg Date: Sun, 3 May 2020 19:53:02 +0200 Subject: minkbd: repo restructure --- .../arm_fft_bin_example/arm_fft_bin_example_f32.c | 158 --------------------- 1 file changed, 158 deletions(-) delete mode 100644 Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_fft_bin_example/arm_fft_bin_example_f32.c (limited to 'Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_fft_bin_example/arm_fft_bin_example_f32.c') diff --git a/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_fft_bin_example/arm_fft_bin_example_f32.c b/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_fft_bin_example/arm_fft_bin_example_f32.c deleted file mode 100644 index 91d15b5..0000000 --- a/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_fft_bin_example/arm_fft_bin_example_f32.c +++ /dev/null @@ -1,158 +0,0 @@ -/* ---------------------------------------------------------------------- -* Copyright (C) 2010-2012 ARM Limited. All rights reserved. -* -* $Date: 17. January 2013 -* $Revision: V1.4.0 -* -* Project: CMSIS DSP Library -* Title: arm_fft_bin_example_f32.c -* -* Description: Example code demonstrating calculation of Max energy bin of -* frequency domain of input signal. -* -* Target Processor: Cortex-M4/Cortex-M3 -* -* Redistribution and use in source and binary forms, with or without -* modification, are permitted provided that the following conditions -* are met: -* - Redistributions of source code must retain the above copyright -* notice, this list of conditions and the following disclaimer. -* - Redistributions in binary form must reproduce the above copyright -* notice, this list of conditions and the following disclaimer in -* the documentation and/or other materials provided with the -* distribution. -* - Neither the name of ARM LIMITED nor the names of its contributors -* may be used to endorse or promote products derived from this -* software without specific prior written permission. -* -* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS -* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE -* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, -* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, -* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER -* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT -* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN -* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE -* POSSIBILITY OF SUCH DAMAGE. - * -------------------------------------------------------------------- */ - -/** - * @ingroup groupExamples - */ - -/** - * @defgroup FrequencyBin Frequency Bin Example - * - * \par Description - * \par - * Demonstrates the calculation of the maximum energy bin in the frequency - * domain of the input signal with the use of Complex FFT, Complex - * Magnitude, and Maximum functions. - * - * \par Algorithm: - * \par - * The input test signal contains a 10 kHz signal with uniformly distributed white noise. - * Calculating the FFT of the input signal will give us the maximum energy of the - * bin corresponding to the input frequency of 10 kHz. - * - * \par Block Diagram: - * \image html FFTBin.gif "Block Diagram" - * \par - * The figure below shows the time domain signal of 10 kHz signal with - * uniformly distributed white noise, and the next figure shows the input - * in the frequency domain. The bin with maximum energy corresponds to 10 kHz signal. - * \par - * \image html FFTBinInput.gif "Input signal in Time domain" - * \image html FFTBinOutput.gif "Input signal in Frequency domain" - * - * \par Variables Description: - * \par - * \li \c testInput_f32_10khz points to the input data - * \li \c testOutput points to the output data - * \li \c fftSize length of FFT - * \li \c ifftFlag flag for the selection of CFFT/CIFFT - * \li \c doBitReverse Flag for selection of normal order or bit reversed order - * \li \c refIndex reference index value at which maximum energy of bin ocuurs - * \li \c testIndex calculated index value at which maximum energy of bin ocuurs - * - * \par CMSIS DSP Software Library Functions Used: - * \par - * - arm_cfft_f32() - * - arm_cmplx_mag_f32() - * - arm_max_f32() - * - * Refer - * \link arm_fft_bin_example_f32.c \endlink - * - */ - - -/** \example arm_fft_bin_example_f32.c - */ - - -#include "arm_math.h" -#include "arm_const_structs.h" - -#define TEST_LENGTH_SAMPLES 2048 - -/* ------------------------------------------------------------------- -* External Input and Output buffer Declarations for FFT Bin Example -* ------------------------------------------------------------------- */ -extern float32_t testInput_f32_10khz[TEST_LENGTH_SAMPLES]; -static float32_t testOutput[TEST_LENGTH_SAMPLES/2]; - -/* ------------------------------------------------------------------ -* Global variables for FFT Bin Example -* ------------------------------------------------------------------- */ -uint32_t fftSize = 1024; -uint32_t ifftFlag = 0; -uint32_t doBitReverse = 1; - -/* Reference index at which max energy of bin ocuurs */ -uint32_t refIndex = 213, testIndex = 0; - -/* ---------------------------------------------------------------------- -* Max magnitude FFT Bin test -* ------------------------------------------------------------------- */ - -int32_t main(void) -{ - - arm_status status; - float32_t maxValue; - - status = ARM_MATH_SUCCESS; - - /* Process the data through the CFFT/CIFFT module */ - arm_cfft_f32(&arm_cfft_sR_f32_len1024, testInput_f32_10khz, ifftFlag, doBitReverse); - - /* Process the data through the Complex Magnitude Module for - calculating the magnitude at each bin */ - arm_cmplx_mag_f32(testInput_f32_10khz, testOutput, fftSize); - - /* Calculates maxValue and returns corresponding BIN value */ - arm_max_f32(testOutput, fftSize, &maxValue, &testIndex); - - if (testIndex != refIndex) - { - status = ARM_MATH_TEST_FAILURE; - } - - /* ---------------------------------------------------------------------- - ** Loop here if the signals fail the PASS check. - ** This denotes a test failure - ** ------------------------------------------------------------------- */ - - if ( status != ARM_MATH_SUCCESS) - { - while (1); - } - - while (1); /* main function does not return */ -} - - /** \endlink */ -- cgit