diff options
author | Ali Labbene <ali.labbene@st.com> | 2019-12-11 08:59:21 +0100 |
---|---|---|
committer | Ali Labbene <ali.labbene@st.com> | 2019-12-16 16:35:24 +0100 |
commit | 9f95ff5b6ba01db09552b84a0ab79607060a2666 (patch) | |
tree | 8a6e0dda832555c692307869aed49d07ee7facfe /DSP_Lib/Examples/arm_fft_bin_example/ARM/arm_fft_bin_example_f32.c | |
parent | 76177aa280494bb36d7a0bcbda1078d4db717020 (diff) | |
download | st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.gz st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.bz2 st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.zip |
Official ARM version: v5.4.0
Add CMSIS V5.4.0, please refer to index.html available under \docs folder.
Note: content of \CMSIS\Core\Include has been copied under \Include to keep the same structure
used in existing projects, and thus avoid projects mass update
Note: the following components have been removed from ARM original delivery (as not used in ST packages)
- CMSIS_EW2018.pdf
- .gitattributes
- .gitignore
- \Device
- \CMSIS
- \CoreValidation
- \DAP
- \Documentation
- \DoxyGen
- \Driver
- \Pack
- \RTOS\CMSIS_RTOS_Tutorial.pdf
- \RTOS\RTX
- \RTOS\Template
- \RTOS2\RTX
- \Utilities
- All ARM/GCC projects files are deleted from \DSP, \RTOS and \RTOS2
Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3
Diffstat (limited to 'DSP_Lib/Examples/arm_fft_bin_example/ARM/arm_fft_bin_example_f32.c')
-rw-r--r-- | DSP_Lib/Examples/arm_fft_bin_example/ARM/arm_fft_bin_example_f32.c | 158 |
1 files changed, 0 insertions, 158 deletions
diff --git a/DSP_Lib/Examples/arm_fft_bin_example/ARM/arm_fft_bin_example_f32.c b/DSP_Lib/Examples/arm_fft_bin_example/ARM/arm_fft_bin_example_f32.c deleted file mode 100644 index 6214211..0000000 --- a/DSP_Lib/Examples/arm_fft_bin_example/ARM/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() - * - * <b> Refer </b> - * \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 */ |