diff options
Diffstat (limited to 'Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example')
3 files changed, 0 insertions, 776 deletions
diff --git a/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example/arm_convolution_example_f32.c b/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example/arm_convolution_example_f32.c deleted file mode 100644 index e4665fe..0000000 --- a/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example/arm_convolution_example_f32.c +++ /dev/null @@ -1,247 +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_convolution_example_f32.c
-*
-* Description: Example code demonstrating Convolution of two input signals using fft.
-*
-* 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 ConvolutionExample Convolution Example
- *
- * \par Description:
- * \par
- * Demonstrates the convolution theorem with the use of the Complex FFT, Complex-by-Complex
- * Multiplication, and Support Functions.
- *
- * \par Algorithm:
- * \par
- * The convolution theorem states that convolution in the time domain corresponds to
- * multiplication in the frequency domain. Therefore, the Fourier transform of the convoution of
- * two signals is equal to the product of their individual Fourier transforms.
- * The Fourier transform of a signal can be evaluated efficiently using the Fast Fourier Transform (FFT).
- * \par
- * Two input signals, <code>a[n]</code> and <code>b[n]</code>, with lengths \c n1 and \c n2 respectively,
- * are zero padded so that their lengths become \c N, which is greater than or equal to <code>(n1+n2-1)</code>
- * and is a power of 4 as FFT implementation is radix-4.
- * The convolution of <code>a[n]</code> and <code>b[n]</code> is obtained by taking the FFT of the input
- * signals, multiplying the Fourier transforms of the two signals, and taking the inverse FFT of
- * the multiplied result.
- * \par
- * This is denoted by the following equations:
- * <pre> A[k] = FFT(a[n],N)
- * B[k] = FFT(b[n],N)
- * conv(a[n], b[n]) = IFFT(A[k] * B[k], N)</pre>
- * where <code>A[k]</code> and <code>B[k]</code> are the N-point FFTs of the signals <code>a[n]</code>
- * and <code>b[n]</code> respectively.
- * The length of the convolved signal is <code>(n1+n2-1)</code>.
- *
- * \par Block Diagram:
- * \par
- * \image html Convolution.gif
- *
- * \par Variables Description:
- * \par
- * \li \c testInputA_f32 points to the first input sequence
- * \li \c srcALen length of the first input sequence
- * \li \c testInputB_f32 points to the second input sequence
- * \li \c srcBLen length of the second input sequence
- * \li \c outLen length of convolution output sequence, <code>(srcALen + srcBLen - 1)</code>
- * \li \c AxB points to the output array where the product of individual FFTs of inputs is stored.
- *
- * \par CMSIS DSP Software Library Functions Used:
- * \par
- * - arm_fill_f32()
- * - arm_copy_f32()
- * - arm_cfft_radix4_init_f32()
- * - arm_cfft_radix4_f32()
- * - arm_cmplx_mult_cmplx_f32()
- *
- * <b> Refer </b>
- * \link arm_convolution_example_f32.c \endlink
- *
- */
-
-
-/** \example arm_convolution_example_f32.c
- */
-
-#include "arm_math.h"
-#include "math_helper.h"
-
-/* ----------------------------------------------------------------------
-* Defines each of the tests performed
-* ------------------------------------------------------------------- */
-#define MAX_BLOCKSIZE 128
-#define DELTA (0.000001f)
-#define SNR_THRESHOLD 90
-
-/* ----------------------------------------------------------------------
-* Declare I/O buffers
-* ------------------------------------------------------------------- */
-float32_t Ak[MAX_BLOCKSIZE]; /* Input A */
-float32_t Bk[MAX_BLOCKSIZE]; /* Input B */
-float32_t AxB[MAX_BLOCKSIZE * 2]; /* Output */
-
-/* ----------------------------------------------------------------------
-* Test input data for Floating point Convolution example for 32-blockSize
-* Generated by the MATLAB randn() function
-* ------------------------------------------------------------------- */
-float32_t testInputA_f32[64] =
-{
- -0.808920, 1.357369, 1.180861, -0.504544, 1.762637, -0.703285,
- 1.696966, 0.620571, -0.151093, -0.100235, -0.872382, -0.403579,
- -0.860749, -0.382648, -1.052338, 0.128113, -0.646269, 1.093377,
- -2.209198, 0.471706, 0.408901, 1.266242, 0.598252, 1.176827,
- -0.203421, 0.213596, -0.851964, -0.466958, 0.021841, -0.698938,
- -0.604107, 0.461778, -0.318219, 0.942520, 0.577585, 0.417619,
- 0.614665, 0.563679, -1.295073, -0.764437, 0.952194, -0.859222,
- -0.618554, -2.268542, -1.210592, 1.655853, -2.627219, -0.994249,
- -1.374704, 0.343799, 0.025619, 1.227481, -0.708031, 0.069355,
- -1.845228, -1.570886, 1.010668, -1.802084, 1.630088, 1.286090,
- -0.161050, -0.940794, 0.367961, 0.291907
-
-};
-
-float32_t testInputB_f32[64] =
-{
- 0.933724, 0.046881, 1.316470, 0.438345, 0.332682, 2.094885,
- 0.512081, 0.035546, 0.050894, -2.320371, 0.168711, -1.830493,
- -0.444834, -1.003242, -0.531494, -1.365600, -0.155420, -0.757692,
- -0.431880, -0.380021, 0.096243, -0.695835, 0.558850, -1.648962,
- 0.020369, -0.363630, 0.887146, 0.845503, -0.252864, -0.330397,
- 1.269131, -1.109295, -1.027876, 0.135940, 0.116721, -0.293399,
- -1.349799, 0.166078, -0.802201, 0.369367, -0.964568, -2.266011,
- 0.465178, 0.651222, -0.325426, 0.320245, -0.784178, -0.579456,
- 0.093374, 0.604778, -0.048225, 0.376297, -0.394412, 0.578182,
- -1.218141, -1.387326, 0.692462, -0.631297, 0.153137, -0.638952,
- 0.635474, -0.970468, 1.334057, -0.111370
-};
-
-const float testRefOutput_f32[127] =
-{
- -0.818943, 1.229484, -0.533664, 1.016604, 0.341875, -1.963656,
- 5.171476, 3.478033, 7.616361, 6.648384, 0.479069, 1.792012,
- -1.295591, -7.447818, 0.315830, -10.657445, -2.483469, -6.524236,
- -7.380591, -3.739005, -8.388957, 0.184147, -1.554888, 3.786508,
- -1.684421, 5.400610, -1.578126, 7.403361, 8.315999, 2.080267,
- 11.077776, 2.749673, 7.138962, 2.748762, 0.660363, 0.981552,
- 1.442275, 0.552721, -2.576892, 4.703989, 0.989156, 8.759344,
- -0.564825, -3.994680, 0.954710, -5.014144, 6.592329, 1.599488,
- -13.979146, -0.391891, -4.453369, -2.311242, -2.948764, 1.761415,
- -0.138322, 10.433007, -2.309103, 4.297153, 8.535523, 3.209462,
- 8.695819, 5.569919, 2.514304, 5.582029, 2.060199, 0.642280,
- 7.024616, 1.686615, -6.481756, 1.343084, -3.526451, 1.099073,
- -2.965764, -0.173723, -4.111484, 6.528384, -6.965658, 1.726291,
- 1.535172, 11.023435, 2.338401, -4.690188, 1.298210, 3.943885,
- 8.407885, 5.168365, 0.684131, 1.559181, 1.859998, 2.852417,
- 8.574070, -6.369078, 6.023458, 11.837963, -6.027632, 4.469678,
- -6.799093, -2.674048, 6.250367, -6.809971, -3.459360, 9.112410,
- -2.711621, -1.336678, 1.564249, -1.564297, -1.296760, 8.904013,
- -3.230109, 6.878013, -7.819823, 3.369909, -1.657410, -2.007358,
- -4.112825, 1.370685, -3.420525, -6.276605, 3.244873, -3.352638,
- 1.545372, 0.902211, 0.197489, -1.408732, 0.523390, 0.348440, 0
-};
-
-
-/* ----------------------------------------------------------------------
-* Declare Global variables
-* ------------------------------------------------------------------- */
-uint32_t srcALen = 64; /* Length of Input A */
-uint32_t srcBLen = 64; /* Length of Input B */
-uint32_t outLen; /* Length of convolution output */
-float32_t snr; /* output SNR */
-
-int32_t main(void)
-{
- arm_status status; /* Status of the example */
- arm_cfft_radix4_instance_f32 cfft_instance; /* CFFT Structure instance */
-
- /* CFFT Structure instance pointer */
- arm_cfft_radix4_instance_f32 *cfft_instance_ptr =
- (arm_cfft_radix4_instance_f32*) &cfft_instance;
-
- /* output length of convolution */
- outLen = srcALen + srcBLen - 1;
-
- /* Initialise the fft input buffers with all zeros */
- arm_fill_f32(0.0, Ak, MAX_BLOCKSIZE);
- arm_fill_f32(0.0, Bk, MAX_BLOCKSIZE);
-
- /* Copy the input values to the fft input buffers */
- arm_copy_f32(testInputA_f32, Ak, MAX_BLOCKSIZE/2);
- arm_copy_f32(testInputB_f32, Bk, MAX_BLOCKSIZE/2);
-
- /* Initialize the CFFT function to compute 64 point fft */
- status = arm_cfft_radix4_init_f32(cfft_instance_ptr, 64, 0, 1);
-
- /* Transform input a[n] from time domain to frequency domain A[k] */
- arm_cfft_radix4_f32(cfft_instance_ptr, Ak);
- /* Transform input b[n] from time domain to frequency domain B[k] */
- arm_cfft_radix4_f32(cfft_instance_ptr, Bk);
-
- /* Complex Multiplication of the two input buffers in frequency domain */
- arm_cmplx_mult_cmplx_f32(Ak, Bk, AxB, MAX_BLOCKSIZE/2);
-
- /* Initialize the CIFFT function to compute 64 point ifft */
- status = arm_cfft_radix4_init_f32(cfft_instance_ptr, 64, 1, 1);
-
- /* Transform the multiplication output from frequency domain to time domain,
- that gives the convolved output */
- arm_cfft_radix4_f32(cfft_instance_ptr, AxB);
-
- /* SNR Calculation */
- snr = arm_snr_f32((float32_t *)testRefOutput_f32, AxB, srcALen + srcBLen - 1);
-
- /* Compare the SNR with threshold to test whether the
- computed output is matched with the reference output values. */
- if ( snr > SNR_THRESHOLD)
- {
- status = ARM_MATH_SUCCESS;
- }
-
- if ( status != ARM_MATH_SUCCESS)
- {
- while (1);
- }
-
- while (1); /* main function does not return */
-}
-
- /** \endlink */
diff --git a/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example/math_helper.c b/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example/math_helper.c deleted file mode 100644 index f615e6f..0000000 --- a/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example/math_helper.c +++ /dev/null @@ -1,466 +0,0 @@ -/* ----------------------------------------------------------------------
-* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
-*
-* $Date: 17. January 2013
-* $Revision: V1.4.0 b
-*
-* Project: CMSIS DSP Library
-*
-* Title: math_helper.c
-*
-* Description: Definition of all helper functions required.
-*
-* 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.
-* -------------------------------------------------------------------- */
-
-/* ----------------------------------------------------------------------
-* Include standard header files
-* -------------------------------------------------------------------- */
-#include<math.h>
-
-/* ----------------------------------------------------------------------
-* Include project header files
-* -------------------------------------------------------------------- */
-#include "math_helper.h"
-
-/**
- * @brief Caluclation of SNR
- * @param[in] pRef Pointer to the reference buffer
- * @param[in] pTest Pointer to the test buffer
- * @param[in] buffSize total number of samples
- * @return SNR
- * The function Caluclates signal to noise ratio for the reference output
- * and test output
- */
-
-float arm_snr_f32(float *pRef, float *pTest, uint32_t buffSize)
-{
- float EnergySignal = 0.0, EnergyError = 0.0;
- uint32_t i;
- float SNR;
- int temp;
- int *test;
-
- for (i = 0; i < buffSize; i++)
- {
- /* Checking for a NAN value in pRef array */
- test = (int *)(&pRef[i]);
- temp = *test;
-
- if (temp == 0x7FC00000)
- {
- return(0);
- }
-
- /* Checking for a NAN value in pTest array */
- test = (int *)(&pTest[i]);
- temp = *test;
-
- if (temp == 0x7FC00000)
- {
- return(0);
- }
- EnergySignal += pRef[i] * pRef[i];
- EnergyError += (pRef[i] - pTest[i]) * (pRef[i] - pTest[i]);
- }
-
- /* Checking for a NAN value in EnergyError */
- test = (int *)(&EnergyError);
- temp = *test;
-
- if (temp == 0x7FC00000)
- {
- return(0);
- }
-
-
- SNR = 10 * log10 (EnergySignal / EnergyError);
-
- return (SNR);
-
-}
-
-
-/**
- * @brief Provide guard bits for Input buffer
- * @param[in,out] input_buf Pointer to input buffer
- * @param[in] blockSize block Size
- * @param[in] guard_bits guard bits
- * @return none
- * The function Provides the guard bits for the buffer
- * to avoid overflow
- */
-
-void arm_provide_guard_bits_q15 (q15_t * input_buf, uint32_t blockSize,
- uint32_t guard_bits)
-{
- uint32_t i;
-
- for (i = 0; i < blockSize; i++)
- {
- input_buf[i] = input_buf[i] >> guard_bits;
- }
-}
-
-/**
- * @brief Converts float to fixed in q12.20 format
- * @param[in] pIn pointer to input buffer
- * @param[out] pOut pointer to outputbuffer
- * @param[in] numSamples number of samples in the input buffer
- * @return none
- * The function converts floating point values to fixed point(q12.20) values
- */
-
-void arm_float_to_q12_20(float *pIn, q31_t * pOut, uint32_t numSamples)
-{
- uint32_t i;
-
- for (i = 0; i < numSamples; i++)
- {
- /* 1048576.0f corresponds to pow(2, 20) */
- pOut[i] = (q31_t) (pIn[i] * 1048576.0f);
-
- pOut[i] += pIn[i] > 0 ? 0.5 : -0.5;
-
- if (pIn[i] == (float) 1.0)
- {
- pOut[i] = 0x000FFFFF;
- }
- }
-}
-
-/**
- * @brief Compare MATLAB Reference Output and ARM Test output
- * @param[in] pIn Pointer to Ref buffer
- * @param[in] pOut Pointer to Test buffer
- * @param[in] numSamples number of samples in the buffer
- * @return maximum difference
- */
-
-uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t *pOut, uint32_t numSamples)
-{
- uint32_t i;
- int32_t diff, diffCrnt = 0;
- uint32_t maxDiff = 0;
-
- for (i = 0; i < numSamples; i++)
- {
- diff = pIn[i] - pOut[i];
- diffCrnt = (diff > 0) ? diff : -diff;
-
- if (diffCrnt > maxDiff)
- {
- maxDiff = diffCrnt;
- }
- }
-
- return(maxDiff);
-}
-
-/**
- * @brief Compare MATLAB Reference Output and ARM Test output
- * @param[in] pIn Pointer to Ref buffer
- * @param[in] pOut Pointer to Test buffer
- * @param[in] numSamples number of samples in the buffer
- * @return maximum difference
- */
-
-uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t * pOut, uint32_t numSamples)
-{
- uint32_t i;
- int32_t diff, diffCrnt = 0;
- uint32_t maxDiff = 0;
-
- for (i = 0; i < numSamples; i++)
- {
- diff = pIn[i] - pOut[i];
- diffCrnt = (diff > 0) ? diff : -diff;
-
- if (diffCrnt > maxDiff)
- {
- maxDiff = diffCrnt;
- }
- }
-
- return(maxDiff);
-}
-
-/**
- * @brief Provide guard bits for Input buffer
- * @param[in,out] input_buf Pointer to input buffer
- * @param[in] blockSize block Size
- * @param[in] guard_bits guard bits
- * @return none
- * The function Provides the guard bits for the buffer
- * to avoid overflow
- */
-
-void arm_provide_guard_bits_q31 (q31_t * input_buf,
- uint32_t blockSize,
- uint32_t guard_bits)
-{
- uint32_t i;
-
- for (i = 0; i < blockSize; i++)
- {
- input_buf[i] = input_buf[i] >> guard_bits;
- }
-}
-
-/**
- * @brief Provide guard bits for Input buffer
- * @param[in,out] input_buf Pointer to input buffer
- * @param[in] blockSize block Size
- * @param[in] guard_bits guard bits
- * @return none
- * The function Provides the guard bits for the buffer
- * to avoid overflow
- */
-
-void arm_provide_guard_bits_q7 (q7_t * input_buf,
- uint32_t blockSize,
- uint32_t guard_bits)
-{
- uint32_t i;
-
- for (i = 0; i < blockSize; i++)
- {
- input_buf[i] = input_buf[i] >> guard_bits;
- }
-}
-
-
-
-/**
- * @brief Caluclates number of guard bits
- * @param[in] num_adds number of additions
- * @return guard bits
- * The function Caluclates the number of guard bits
- * depending on the numtaps
- */
-
-uint32_t arm_calc_guard_bits (uint32_t num_adds)
-{
- uint32_t i = 1, j = 0;
-
- if (num_adds == 1)
- {
- return (0);
- }
-
- while (i < num_adds)
- {
- i = i * 2;
- j++;
- }
-
- return (j);
-}
-
-/**
- * @brief Apply guard bits to buffer
- * @param[in,out] pIn pointer to input buffer
- * @param[in] numSamples number of samples in the input buffer
- * @param[in] guard_bits guard bits
- * @return none
- */
-
-void arm_apply_guard_bits (float32_t *pIn,
- uint32_t numSamples,
- uint32_t guard_bits)
-{
- uint32_t i;
-
- for (i = 0; i < numSamples; i++)
- {
- pIn[i] = pIn[i] * arm_calc_2pow(guard_bits);
- }
-}
-
-/**
- * @brief Calculates pow(2, numShifts)
- * @param[in] numShifts number of shifts
- * @return pow(2, numShifts)
- */
-uint32_t arm_calc_2pow(uint32_t numShifts)
-{
-
- uint32_t i, val = 1;
-
- for (i = 0; i < numShifts; i++)
- {
- val = val * 2;
- }
-
- return(val);
-}
-
-
-
-/**
- * @brief Converts float to fixed q14
- * @param[in] pIn pointer to input buffer
- * @param[out] pOut pointer to output buffer
- * @param[in] numSamples number of samples in the buffer
- * @return none
- * The function converts floating point values to fixed point values
- */
-
-void arm_float_to_q14 (float *pIn, q15_t *pOut, uint32_t numSamples)
-{
- uint32_t i;
-
- for (i = 0; i < numSamples; i++)
- {
- /* 16384.0f corresponds to pow(2, 14) */
- pOut[i] = (q15_t) (pIn[i] * 16384.0f);
-
- pOut[i] += pIn[i] > 0 ? 0.5 : -0.5;
-
- if (pIn[i] == (float) 2.0)
- {
- pOut[i] = 0x7FFF;
- }
-
- }
-
-}
-
-
-/**
- * @brief Converts float to fixed q30 format
- * @param[in] pIn pointer to input buffer
- * @param[out] pOut pointer to output buffer
- * @param[in] numSamples number of samples in the buffer
- * @return none
- * The function converts floating point values to fixed point values
- */
-
-void arm_float_to_q30 (float *pIn, q31_t * pOut, uint32_t numSamples)
-{
- uint32_t i;
-
- for (i = 0; i < numSamples; i++)
- {
- /* 1073741824.0f corresponds to pow(2, 30) */
- pOut[i] = (q31_t) (pIn[i] * 1073741824.0f);
-
- pOut[i] += pIn[i] > 0 ? 0.5 : -0.5;
-
- if (pIn[i] == (float) 2.0)
- {
- pOut[i] = 0x7FFFFFFF;
- }
- }
-}
-
-/**
- * @brief Converts float to fixed q30 format
- * @param[in] pIn pointer to input buffer
- * @param[out] pOut pointer to output buffer
- * @param[in] numSamples number of samples in the buffer
- * @return none
- * The function converts floating point values to fixed point values
- */
-
-void arm_float_to_q29 (float *pIn, q31_t *pOut, uint32_t numSamples)
-{
- uint32_t i;
-
- for (i = 0; i < numSamples; i++)
- {
- /* 1073741824.0f corresponds to pow(2, 30) */
- pOut[i] = (q31_t) (pIn[i] * 536870912.0f);
-
- pOut[i] += pIn[i] > 0 ? 0.5 : -0.5;
-
- if (pIn[i] == (float) 4.0)
- {
- pOut[i] = 0x7FFFFFFF;
- }
- }
-}
-
-
-/**
- * @brief Converts float to fixed q28 format
- * @param[in] pIn pointer to input buffer
- * @param[out] pOut pointer to output buffer
- * @param[in] numSamples number of samples in the buffer
- * @return none
- * The function converts floating point values to fixed point values
- */
-
-void arm_float_to_q28 (float *pIn, q31_t *pOut, uint32_t numSamples)
-{
- uint32_t i;
-
- for (i = 0; i < numSamples; i++)
- {
- /* 268435456.0f corresponds to pow(2, 28) */
- pOut[i] = (q31_t) (pIn[i] * 268435456.0f);
-
- pOut[i] += pIn[i] > 0 ? 0.5 : -0.5;
-
- if (pIn[i] == (float) 8.0)
- {
- pOut[i] = 0x7FFFFFFF;
- }
- }
-}
-
-/**
- * @brief Clip the float values to +/- 1
- * @param[in,out] pIn input buffer
- * @param[in] numSamples number of samples in the buffer
- * @return none
- * The function converts floating point values to fixed point values
- */
-
-void arm_clip_f32 (float *pIn, uint32_t numSamples)
-{
- uint32_t i;
-
- for (i = 0; i < numSamples; i++)
- {
- if (pIn[i] > 1.0f)
- {
- pIn[i] = 1.0;
- }
- else if ( pIn[i] < -1.0f)
- {
- pIn[i] = -1.0;
- }
-
- }
-}
-
-
-
-
diff --git a/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example/math_helper.h b/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example/math_helper.h deleted file mode 100644 index 5a18734..0000000 --- a/Blink/Drivers/CMSIS/DSP/Examples/ARM/arm_convolution_example/math_helper.h +++ /dev/null @@ -1,63 +0,0 @@ -/* ----------------------------------------------------------------------
-* Copyright (C) 2010-2013 ARM Limited. All rights reserved.
-*
-* $Date: 17. January 2013
-* $Revision: V1.4.0
-*
-* Project: CMSIS DSP Library
-*
-* Title: math_helper.h
-*
-* Description: Prototypes of all helper functions required.
-*
-* 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.
-* -------------------------------------------------------------------- */
-
-
-#include "arm_math.h"
-
-#ifndef MATH_HELPER_H
-#define MATH_HELPER_H
-
-float arm_snr_f32(float *pRef, float *pTest, uint32_t buffSize);
-void arm_float_to_q12_20(float *pIn, q31_t * pOut, uint32_t numSamples);
-void arm_provide_guard_bits_q15(q15_t *input_buf, uint32_t blockSize, uint32_t guard_bits);
-void arm_provide_guard_bits_q31(q31_t *input_buf, uint32_t blockSize, uint32_t guard_bits);
-void arm_float_to_q14(float *pIn, q15_t *pOut, uint32_t numSamples);
-void arm_float_to_q29(float *pIn, q31_t *pOut, uint32_t numSamples);
-void arm_float_to_q28(float *pIn, q31_t *pOut, uint32_t numSamples);
-void arm_float_to_q30(float *pIn, q31_t *pOut, uint32_t numSamples);
-void arm_clip_f32(float *pIn, uint32_t numSamples);
-uint32_t arm_calc_guard_bits(uint32_t num_adds);
-void arm_apply_guard_bits (float32_t * pIn, uint32_t numSamples, uint32_t guard_bits);
-uint32_t arm_compare_fixed_q15(q15_t *pIn, q15_t * pOut, uint32_t numSamples);
-uint32_t arm_compare_fixed_q31(q31_t *pIn, q31_t *pOut, uint32_t numSamples);
-uint32_t arm_calc_2pow(uint32_t guard_bits);
-#endif
-
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