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authorJanHenrik <janhenrik@janhenrik.org>2020-04-01 00:40:03 +0200
committerJanHenrik <janhenrik@janhenrik.org>2020-04-01 00:40:03 +0200
commitf7de54fc6fa6b40dfa2dfbe4c2a8ee933affa126 (patch)
tree78465e38a01011dc9f17eb73416011310532017f /cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example
parent3ec13d81e70e52246545c720abe756ccf09fb231 (diff)
downloadminikbd-f7de54fc6fa6b40dfa2dfbe4c2a8ee933affa126.tar.gz
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added files
Diffstat (limited to 'cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example')
-rw-r--r--cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/arm_signal_converge_data.c269
-rw-r--r--cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/arm_signal_converge_example_f32.c259
-rw-r--r--cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/math_helper.c466
-rw-r--r--cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/math_helper.h63
4 files changed, 1057 insertions, 0 deletions
diff --git a/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/arm_signal_converge_data.c b/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/arm_signal_converge_data.c
new file mode 100644
index 0000000..3a2337d
--- /dev/null
+++ b/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/arm_signal_converge_data.c
@@ -0,0 +1,269 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+*
+* $Date: 17. January 2013
+* $Revision: V1.4.0
+*
+* Project: CMSIS DSP Library
+* Title: arm_signal_converge_data.c
+*
+* Description: Test input data for Floating point LMS Norm FIR filter
+*
+* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
+*
+* 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"
+
+/* ----------------------------------------------------------------------
+** Test input data for Floating point LMS Norm FIR filter
+** Generated by the MATLAB randn() function
+** ------------------------------------------------------------------- */
+
+float32_t testInput_f32[1536] =
+{
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+-0.703281, 0.563477, -0.050296, 1.163593, 0.658808, -1.550089, -3.029118, 0.540578,
+-1.008998, 0.908047, 1.582303, -0.979088, 1.007902, 0.158491, -0.586927, 1.574082,
+-0.516649, 1.227800, 1.583876, -2.088950, 2.949545, 1.356125, 1.050068, -0.767170,
+-0.257653, -1.371845, -1.267656, -0.894948, 0.589089, 1.842629, 1.347967, -0.491253,
+-2.177568, 0.237000, -0.735411, -1.779419, 0.448030, 0.581214, 0.856607, -0.266263,
+-0.417470, -0.205806, -0.174323, 0.217577, 1.684295, 0.119528, 0.650667, 2.080061,
+-0.339225, 0.730113, 0.293969, -0.849109, -2.533858, -2.378941, -0.346276, -0.610937,
+-0.408192, -1.415611, 0.227122, 0.207974, -0.719718, 0.757762, -1.643135, -1.056813,
+-0.251662, -1.298441, 1.233255, 1.494625, 0.235938, -1.404359, 0.658791, -2.556613,
+-0.534945, 3.202525, 0.439198, -1.149901, 0.886765, -0.283386, 1.035336, -0.364878,
+1.341987, 1.008872, 0.213874, -0.299264, 0.255849, -0.190826, -0.079060, 0.699851,
+-0.796540, -0.801284, -0.007599, -0.726810, -1.490902, 0.870335, -0.265675, -1.566695,
+-0.394636, -0.143855, -2.334247, -1.357539, -1.815689, 1.108422, -0.142115, 1.112757,
+0.559264, 0.478370, -0.679385, 0.284967, -1.332935, -0.723980, -0.663600, 0.198443,
+-1.794868, -1.387673, 0.197768, 1.469328, 0.366493, -0.442775, -0.048563, 0.077709,
+1.957910, -0.072848, 0.938810, -0.079608, -0.800959, 0.309424, 1.051826, -1.664211,
+-1.090792, -0.191731, 0.463401, -0.924147, -0.649657, 0.622893, -1.335107, 1.047689,
+0.863327, -0.642411, 0.660010, 1.294116, 0.314579, 0.859573, 0.128670, 0.016568,
+-0.072801, -0.994310, -0.747358, -0.030814, 0.988355, -0.599017, 1.476644, -0.813801,
+0.645040, -1.309919, -0.867425, -0.474233, 0.222417, 1.871323, 0.110001, -0.411341,
+0.511242, -1.199117, -0.096361, 0.445817, -0.295825, -0.167996, 0.179543, 0.421118,
+1.677678, 1.996949, 0.696964, -1.366382, 0.363045, -0.567044, -1.044154, 0.697139,
+0.484026, -0.193751, -0.378095, -0.886374, -1.840197, -1.628195, -1.173789, -0.415411,
+0.175088, 0.229433, -1.240889, 0.700004, 0.426877, 1.454803, -0.510186, -0.006657,
+-0.525496, 0.717698, 1.088374, 0.500552, 2.771790, -0.160309, 0.429489, -1.966817,
+-0.546019, -1.888395, -0.107952, -1.316144, -0.672632, -0.902365, -0.154798, 0.947242,
+1.550375, 0.429040, -0.560795, 0.179304, -0.771509, -0.943390, -1.407569, -1.906131,
+-0.065293, 0.672149, 0.206147, -0.008124, 0.020042, -0.558447, 1.886079, -0.219975,
+-1.414395, -0.302811, -0.569574, -0.121495, -0.390171, -0.844287, -1.737757, -0.449520,
+-1.547933, -0.095776, 0.907714, 2.369602, 0.519768, 0.410525, 1.052585, 0.428784,
+1.295088, -0.186053, 0.130733, -0.657627, -0.759267, -0.595170, 0.812400, 0.069541,
+-1.833687, 1.827363, 0.654075, -1.544769, -0.375109, 0.207688, -0.765615, -0.106355,
+0.338769, 1.033461, -1.404822, -1.030570, -0.643372, 0.170787, 1.344839, 1.936273,
+0.741336, 0.811980, -0.142808, -0.099858, -0.800131, 0.493249, 1.237574, 1.295951,
+-0.278196, 0.217127, 0.630728, -0.548549, 0.229632, 0.355311, 0.521284, -0.615971,
+1.345803, 0.974922, -2.377934, -1.092319, -0.325710, -2.012228, 1.567660, 0.233337,
+0.646420, -1.129412, 0.197038, 1.696870, 0.726034, 0.792526, 0.603357, -0.058405,
+-1.108666, 2.144229, -1.352821, 0.457021, 0.391175, 2.073013, -0.323318, 1.468132,
+-0.502399, 0.209593, 0.754800, -0.948189, 0.613157, 1.760503, 0.088762, 2.595570,
+-0.675470, 2.786804, -0.016827, 0.271651, -0.914102, -1.951371, -0.317418, 0.588333,
+0.828996, -1.674851, -1.922293, -0.436662, 0.044974, 2.416609, -0.309892, 0.187583,
+0.947699, -0.525703, -1.115605, -1.592320, 1.174844, 0.485144, 1.645480, -0.454233,
+1.008768, 2.049403, 0.602020, 0.017860, -1.610426, 1.238752, 0.683587, -0.780716,
+0.530979, 2.134498, 0.354361, 0.231700, 1.287980, -0.013488, -1.333345, -0.556343,
+0.755597, -0.911854, 1.371684, 0.245580, 0.118845, 0.384690, -0.070152, -0.578309,
+0.469308, 1.299687, 1.634798, -0.702809, 0.807253, -1.027451, 1.294496, 0.014930,
+0.218705, 1.713188, -2.078805, 0.112917, -1.086491, -1.558311, 0.637406, -0.404576,
+-0.403325, 0.084076, -0.435349, -0.562623, 0.878062, -0.814650, -0.258363, 0.493299,
+-0.802694, -0.008329, 0.627571, 0.154382, 2.580735, -1.306246, 1.023526, 0.777795,
+-0.833884, -0.586663, 0.065664, -0.012342, -0.076987, -1.558587, 1.702607, -0.468984,
+0.094619, 0.287071, 0.919354, 0.510136, 0.245440, -1.400519, 0.969571, 1.593698,
+-1.437917, -1.534230, -0.074710, 0.081459, -0.843240, -0.564640, -0.028207, -1.243702,
+0.733039, 0.059580, 0.149144, 1.595857, -0.777250, 1.550277, 1.055002, -0.166654,
+0.314484, 1.419571, 0.327348, 0.475653, 0.398754, -0.072770, 1.314784, 0.978279,
+1.722114, -0.412302, 0.565133, 0.739851, 0.220138, 1.312807, 0.629152, -1.107987,
+-0.447001, -0.725993, 0.354045, -0.506772, -2.103747, -0.664684, 1.450110, -0.329805,
+2.701872, -1.634939, -0.536325, 0.547223, 1.492603, -0.455243, -0.496416, 1.235260,
+0.040926, 0.748467, 1.230764, 0.304903, 1.077771, 0.765151, -1.319580, -0.509191,
+0.555116, -1.957625, -0.760453, -2.443886, -0.659366, -0.114779, 0.300079, -0.583996,
+-3.073745, 1.551042, -0.407369, 1.428095, -1.353242, 0.903970, 0.541671, -0.465020
+};
+
+
+
+/* ----------------------------------------------------------------------
+** Coefficients for 32-tap filter for Floating point LMS FIR filter
+* FIR high pass filter with cutoff freq 9.6kHz (transition 9.6KHz to 11.52KHz)
+** ------------------------------------------------------------------- */
+float32_t lmsNormCoeff_f32[32] = {
+-0.004240, 0.002301, 0.008860, -0.000000, -0.019782, -0.010543, 0.032881, 0.034736,
+-0.037374, -0.069586, 0.022397, 0.102169, 0.014185, -0.115908, -0.061648, 0.101018,
+0.101018, -0.061648, -0.115908, 0.014185, 0.102169, 0.022397, -0.069586, -0.037374,
+0.034736, 0.032881, -0.010543, -0.019782, -0.000000, 0.008860, 0.002301, -0.004240
+
+};
+
+/* ----------------------------------------------------------------------
+** Coefficients for 32-tap filter for Floating point FIR filter
+* FIR low pass filter with cutoff freq 24Hz (transition 24Hz to 240Hz)
+** ------------------------------------------------------------------- */
+const float32_t FIRCoeff_f32[32] = {
+0.004502, 0.005074, 0.006707, 0.009356, 0.012933, 0.017303, 0.022298, 0.027717,
+0.033338, 0.038930, 0.044258, 0.049098, 0.053243, 0.056519, 0.058784, 0.059941,
+0.059941, 0.058784, 0.056519, 0.053243, 0.049098, 0.044258, 0.038930, 0.033338,
+0.027717, 0.022298, 0.017303, 0.012933, 0.009356, 0.006707, 0.005074, 0.004502
+
+};
+
diff --git a/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/arm_signal_converge_example_f32.c b/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/arm_signal_converge_example_f32.c
new file mode 100644
index 0000000..d984e2f
--- /dev/null
+++ b/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/arm_signal_converge_example_f32.c
@@ -0,0 +1,259 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+*
+* $Date: 17. January 2013
+* $Revision: V1.4.0
+*
+* Project: CMSIS DSP Library
+* Title: arm_signal_converge_example_f32.c
+*
+* Description: Example code demonstrating convergence of an adaptive
+* filter.
+*
+* 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 SignalConvergence Signal Convergence Example
+ *
+ * \par Description:
+ * \par
+ * Demonstrates the ability of an adaptive filter to "learn" the transfer function of
+ * a FIR lowpass filter using the Normalized LMS Filter, Finite Impulse
+ * Response (FIR) Filter, and Basic Math Functions.
+ *
+ * \par Algorithm:
+ * \par
+ * The figure below illustrates the signal flow in this example. Uniformly distributed white
+ * noise is passed through an FIR lowpass filter. The output of the FIR filter serves as the
+ * reference input of the adaptive filter (normalized LMS filter). The white noise is input
+ * to the adaptive filter. The adaptive filter learns the transfer function of the FIR filter.
+ * The filter outputs two signals: (1) the output of the internal adaptive FIR filter, and
+ * (2) the error signal which is the difference between the adaptive filter and the reference
+ * output of the FIR filter. Over time as the adaptive filter learns the transfer function
+ * of the FIR filter, the first output approaches the reference output of the FIR filter,
+ * and the error signal approaches zero.
+ * \par
+ * The adaptive filter converges properly even if the input signal has a large dynamic
+ * range (i.e., varies from small to large values). The coefficients of the adaptive filter
+ * are initially zero, and then converge over 1536 samples. The internal function test_signal_converge()
+ * implements the stopping condition. The function checks if all of the values of the error signal have a
+ * magnitude below a threshold DELTA.
+ *
+ * \par Block Diagram:
+ * \par
+ * \image html SignalFlow.gif
+ *
+ *
+ * \par Variables Description:
+ * \par
+ * \li \c testInput_f32 points to the input data
+ * \li \c firStateF32 points to FIR state buffer
+ * \li \c lmsStateF32 points to Normalised Least mean square FIR filter state buffer
+ * \li \c FIRCoeff_f32 points to coefficient buffer
+ * \li \c lmsNormCoeff_f32 points to Normalised Least mean square FIR filter coefficient buffer
+ * \li \c wire1, wir2, wire3 temporary buffers
+ * \li \c errOutput, err_signal temporary error buffers
+ *
+ * \par CMSIS DSP Software Library Functions Used:
+ * \par
+ * - arm_lms_norm_init_f32()
+ * - arm_fir_init_f32()
+ * - arm_fir_f32()
+ * - arm_lms_norm_f32()
+ * - arm_scale_f32()
+ * - arm_abs_f32()
+ * - arm_sub_f32()
+ * - arm_min_f32()
+ * - arm_copy_f32()
+ *
+ * <b> Refer </b>
+ * \link arm_signal_converge_example_f32.c \endlink
+ *
+ */
+
+
+/** \example arm_signal_converge_example_f32.c
+ */
+
+#include "arm_math.h"
+#include "math_helper.h"
+
+/* ----------------------------------------------------------------------
+** Global defines for the simulation
+* ------------------------------------------------------------------- */
+
+#define TEST_LENGTH_SAMPLES 1536
+#define NUMTAPS 32
+#define BLOCKSIZE 32
+#define DELTA_ERROR 0.000001f
+#define DELTA_COEFF 0.0001f
+#define MU 0.5f
+
+#define NUMFRAMES (TEST_LENGTH_SAMPLES / BLOCKSIZE)
+
+/* ----------------------------------------------------------------------
+* Declare FIR state buffers and structure
+* ------------------------------------------------------------------- */
+
+float32_t firStateF32[NUMTAPS + BLOCKSIZE];
+arm_fir_instance_f32 LPF_instance;
+
+/* ----------------------------------------------------------------------
+* Declare LMSNorm state buffers and structure
+* ------------------------------------------------------------------- */
+
+float32_t lmsStateF32[NUMTAPS + BLOCKSIZE];
+float32_t errOutput[TEST_LENGTH_SAMPLES];
+arm_lms_norm_instance_f32 lmsNorm_instance;
+
+
+/* ----------------------------------------------------------------------
+* Function Declarations for Signal Convergence Example
+* ------------------------------------------------------------------- */
+
+arm_status test_signal_converge_example( void );
+
+
+/* ----------------------------------------------------------------------
+* Internal functions
+* ------------------------------------------------------------------- */
+arm_status test_signal_converge(float32_t* err_signal,
+ uint32_t blockSize);
+
+void getinput(float32_t* input,
+ uint32_t fr_cnt,
+ uint32_t blockSize);
+
+/* ----------------------------------------------------------------------
+* External Declarations for FIR F32 module Test
+* ------------------------------------------------------------------- */
+extern float32_t testInput_f32[TEST_LENGTH_SAMPLES];
+extern float32_t lmsNormCoeff_f32[32];
+extern const float32_t FIRCoeff_f32[32];
+extern arm_lms_norm_instance_f32 lmsNorm_instance;
+
+/* ----------------------------------------------------------------------
+* Declare I/O buffers
+* ------------------------------------------------------------------- */
+
+float32_t wire1[BLOCKSIZE];
+float32_t wire2[BLOCKSIZE];
+float32_t wire3[BLOCKSIZE];
+float32_t err_signal[BLOCKSIZE];
+
+/* ----------------------------------------------------------------------
+* Signal converge test
+* ------------------------------------------------------------------- */
+
+int32_t main(void)
+{
+ uint32_t i;
+ arm_status status;
+ uint32_t index;
+ float32_t minValue;
+
+ /* Initialize the LMSNorm data structure */
+ arm_lms_norm_init_f32(&lmsNorm_instance, NUMTAPS, lmsNormCoeff_f32, lmsStateF32, MU, BLOCKSIZE);
+
+ /* Initialize the FIR data structure */
+ arm_fir_init_f32(&LPF_instance, NUMTAPS, (float32_t *)FIRCoeff_f32, firStateF32, BLOCKSIZE);
+
+ /* ----------------------------------------------------------------------
+ * Loop over the frames of data and execute each of the processing
+ * functions in the system.
+ * ------------------------------------------------------------------- */
+
+ for(i=0; i < NUMFRAMES; i++)
+ {
+ /* Read the input data - uniformly distributed random noise - into wire1 */
+ arm_copy_f32(testInput_f32 + (i * BLOCKSIZE), wire1, BLOCKSIZE);
+
+ /* Execute the FIR processing function. Input wire1 and output wire2 */
+ arm_fir_f32(&LPF_instance, wire1, wire2, BLOCKSIZE);
+
+ /* Execute the LMS Norm processing function*/
+
+ arm_lms_norm_f32(&lmsNorm_instance, /* LMSNorm instance */
+ wire1, /* Input signal */
+ wire2, /* Reference Signal */
+ wire3, /* Converged Signal */
+ err_signal, /* Error Signal, this will become small as the signal converges */
+ BLOCKSIZE); /* BlockSize */
+
+ /* apply overall gain */
+ arm_scale_f32(wire3, 5, wire3, BLOCKSIZE); /* in-place buffer */
+ }
+
+ status = ARM_MATH_SUCCESS;
+
+ /* -------------------------------------------------------------------------------
+ * Test whether the error signal has reached towards 0.
+ * ----------------------------------------------------------------------------- */
+
+ arm_abs_f32(err_signal, err_signal, BLOCKSIZE);
+ arm_min_f32(err_signal, BLOCKSIZE, &minValue, &index);
+
+ if (minValue > DELTA_ERROR)
+ {
+ status = ARM_MATH_TEST_FAILURE;
+ }
+
+ /* ----------------------------------------------------------------------
+ * Test whether the filter coefficients have converged.
+ * ------------------------------------------------------------------- */
+
+ arm_sub_f32((float32_t *)FIRCoeff_f32, lmsNormCoeff_f32, lmsNormCoeff_f32, NUMTAPS);
+
+ arm_abs_f32(lmsNormCoeff_f32, lmsNormCoeff_f32, NUMTAPS);
+ arm_min_f32(lmsNormCoeff_f32, NUMTAPS, &minValue, &index);
+
+ if (minValue > DELTA_COEFF)
+ {
+ status = ARM_MATH_TEST_FAILURE;
+ }
+
+ /* ----------------------------------------------------------------------
+ * Loop here if the signals did not pass the convergence check.
+ * This denotes a test failure
+ * ------------------------------------------------------------------- */
+
+ if ( status != ARM_MATH_SUCCESS)
+ {
+ while (1);
+ }
+
+ while (1); /* main function does not return */
+}
+
+ /** \endlink */
diff --git a/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/math_helper.c b/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/math_helper.c
new file mode 100644
index 0000000..f615e6f
--- /dev/null
+++ b/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/math_helper.c
@@ -0,0 +1,466 @@
+/* ----------------------------------------------------------------------
+* 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/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/math_helper.h b/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/math_helper.h
new file mode 100644
index 0000000..5a18734
--- /dev/null
+++ b/cdc-dials/Drivers/CMSIS/DSP/Examples/ARM/arm_signal_converge_example/math_helper.h
@@ -0,0 +1,63 @@
+/* ----------------------------------------------------------------------
+* 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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