From 76177aa280494bb36d7a0bcbda1078d4db717020 Mon Sep 17 00:00:00 2001 From: Ali Labbene Date: Mon, 9 Dec 2019 11:25:19 +0100 Subject: Official ARM version: v4.5 --- ...arm_signal_converge_example_f32_8c-example.html | 319 +++++++++++++++++++++ 1 file changed, 319 insertions(+) create mode 100644 Documentation/DSP/html/arm_signal_converge_example_f32_8c-example.html (limited to 'Documentation/DSP/html/arm_signal_converge_example_f32_8c-example.html') diff --git a/Documentation/DSP/html/arm_signal_converge_example_f32_8c-example.html b/Documentation/DSP/html/arm_signal_converge_example_f32_8c-example.html new file mode 100644 index 0000000..6450350 --- /dev/null +++ b/Documentation/DSP/html/arm_signal_converge_example_f32_8c-example.html @@ -0,0 +1,319 @@ + + + + + +arm_signal_converge_example_f32.c +CMSIS-DSP: arm_signal_converge_example_f32.c + + + + + + + + + + + + + + + +
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CMSIS-DSP +  Version 1.4.7 +
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CMSIS DSP Software Library
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arm_signal_converge_example_f32.c
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+
/* ----------------------------------------------------------------------
+
* 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.
+
* -------------------------------------------------------------------- */
+
+
#include "arm_math.h"
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#include "math_helper.h"
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+
/* ----------------------------------------------------------------------
+
** Global defines for the simulation
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* ------------------------------------------------------------------- */
+
+
#define TEST_LENGTH_SAMPLES 1536
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#define NUMTAPS 32
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#define BLOCKSIZE 32
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#define DELTA_ERROR 0.000001f
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#define DELTA_COEFF 0.0001f
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#define MU 0.5f
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+
#define NUMFRAMES (TEST_LENGTH_SAMPLES / BLOCKSIZE)
+
+
/* ----------------------------------------------------------------------
+
* Declare FIR state buffers and structure
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* ------------------------------------------------------------------- */
+
+
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,
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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];
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extern arm_lms_norm_instance_f32 lmsNorm_instance;
+
+
/* ----------------------------------------------------------------------
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* Declare I/O buffers
+
* ------------------------------------------------------------------- */
+
+
float32_t wire1[BLOCKSIZE];
+
float32_t wire2[BLOCKSIZE];
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float32_t wire3[BLOCKSIZE];
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float32_t err_signal[BLOCKSIZE];
+
+
/* ----------------------------------------------------------------------
+
* Signal converge test
+
* ------------------------------------------------------------------- */
+
+
int32_t main(void)
+
{
+
uint32_t i;
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arm_status status;
+
uint32_t index;
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float32_t minValue;
+
+
/* Initialize the LMSNorm data structure */
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arm_lms_norm_init_f32(&lmsNorm_instance, NUMTAPS, lmsNormCoeff_f32, lmsStateF32, MU, BLOCKSIZE);
+
+
/* Initialize the FIR data structure */
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arm_fir_init_f32(&LPF_instance, NUMTAPS, (float32_t *)FIRCoeff_f32, firStateF32, BLOCKSIZE);
+
+
/* ----------------------------------------------------------------------
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* Loop over the frames of data and execute each of the processing
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* functions in the system.
+
* ------------------------------------------------------------------- */
+
+
for(i=0; i < NUMFRAMES; i++)
+
{
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/* Read the input data - uniformly distributed random noise - into wire1 */
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arm_copy_f32(testInput_f32 + (i * BLOCKSIZE), wire1, BLOCKSIZE);
+
+
/* Execute the FIR processing function. Input wire1 and output wire2 */
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arm_fir_f32(&LPF_instance, wire1, wire2, BLOCKSIZE);
+
+
/* Execute the LMS Norm processing function*/
+
+
arm_lms_norm_f32(&lmsNorm_instance, /* LMSNorm instance */
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wire1, /* Input signal */
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wire2, /* Reference Signal */
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wire3, /* Converged Signal */
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err_signal, /* Error Signal, this will become small as the signal converges */
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BLOCKSIZE); /* BlockSize */
+
+
/* apply overall gain */
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arm_scale_f32(wire3, 5, wire3, BLOCKSIZE); /* in-place buffer */
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}
+
+
status = ARM_MATH_SUCCESS;
+
+
/* -------------------------------------------------------------------------------
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* Test whether the error signal has reached towards 0.
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* ----------------------------------------------------------------------------- */
+
+
arm_abs_f32(err_signal, err_signal, BLOCKSIZE);
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arm_min_f32(err_signal, BLOCKSIZE, &minValue, &index);
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+
if (minValue > DELTA_ERROR)
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{
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status = ARM_MATH_TEST_FAILURE;
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}
+
+
/* ----------------------------------------------------------------------
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* Test whether the filter coefficients have converged.
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* ------------------------------------------------------------------- */
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+
arm_sub_f32((float32_t *)FIRCoeff_f32, lmsNormCoeff_f32, lmsNormCoeff_f32, NUMTAPS);
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arm_abs_f32(lmsNormCoeff_f32, lmsNormCoeff_f32, NUMTAPS);
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arm_min_f32(lmsNormCoeff_f32, NUMTAPS, &minValue, &index);
+
+
if (minValue > DELTA_COEFF)
+
{
+
status = ARM_MATH_TEST_FAILURE;
+
}
+
+
/* ----------------------------------------------------------------------
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* Loop here if the signals did not pass the convergence check.
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* This denotes a test failure
+
* ------------------------------------------------------------------- */
+
+
if( status != ARM_MATH_SUCCESS)
+
{
+
while(1);
+
}
+
+
while(1); /* main function does not return */
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}
+
+
+
+ + + + -- cgit