Browse Source

Initial commit

Dmitry Yu Okunev 4 years ago
commit
a72a1b153a
100 changed files with 68661 additions and 0 deletions
  1. 111 0
      .cproject
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      .gitignore
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+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.cdt.core.cnature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.managedBuildNature</nature>
+		<nature>org.eclipse.cdt.managedbuilder.core.ScannerConfigNature</nature>
+	</natures>
+</projectDescription>

+ 27 - 0
.settings/language.settings.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<project>
+	<configuration id="cdt.managedbuild.toolchain.gnu.cross.base.1650846594" name="Default">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
+			<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-523077159797159148" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+				<language-scope id="org.eclipse.cdt.core.gcc"/>
+				<language-scope id="org.eclipse.cdt.core.g++"/>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+		</extension>
+	</configuration>
+	<configuration id="cdt.managedbuild.toolchain.gnu.cross.base.1650846594.1682885047" name="stm32f401">
+		<extension point="org.eclipse.cdt.core.LanguageSettingsProvider">
+			<provider copy-of="extension" id="org.eclipse.cdt.ui.UserLanguageSettingsProvider"/>
+			<provider-reference id="org.eclipse.cdt.core.ReferencedProjectsLanguageSettingsProvider" ref="shared-provider"/>
+			<provider copy-of="extension" id="org.eclipse.cdt.managedbuilder.core.GCCBuildCommandParser"/>
+			<provider class="org.eclipse.cdt.internal.build.crossgcc.CrossGCCBuiltinSpecsDetector" console="false" env-hash="-523077159797159148" id="org.eclipse.cdt.build.crossgcc.CrossGCCBuiltinSpecsDetector" keep-relative-paths="false" name="CDT Cross GCC Built-in Compiler Settings" parameter="${COMMAND} ${FLAGS} -E -P -v -dD &quot;${INPUTS}&quot;" prefer-non-shared="true">
+				<language-scope id="org.eclipse.cdt.core.gcc"/>
+				<language-scope id="org.eclipse.cdt.core.g++"/>
+			</provider>
+			<provider-reference id="org.eclipse.cdt.managedbuilder.core.MBSLanguageSettingsProvider" ref="shared-provider"/>
+		</extension>
+	</configuration>
+</project>

+ 211 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_class_marks_example/ARM/arm_class_marks_example_f32.c

@@ -0,0 +1,211 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+*
+* $Date:         17. January 2013
+* $Revision:     V1.4.0
+*
+* Project:       CMSIS DSP Library
+* Title:         arm_class_marks_example_f32.c
+*
+* Description:   Example code to calculate Minimum, Maximum
+*                Mean, std and variance of marks obtained in a class
+*
+* 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 ClassMarks Class Marks Example
+ *
+ * \par Description:
+ * \par
+ * Demonstrates the use the Maximum, Minimum, Mean, Standard Deviation, Variance
+ * and Matrix functions to calculate statistical values of marks obtained in a class.
+ *
+ * \note This example also demonstrates the usage of static initialization.
+ *
+ * \par Variables Description:
+ * \par
+ * \li \c testMarks_f32 points to the marks scored by 20 students in 4 subjects
+ * \li \c max_marks     Maximum of all marks
+ * \li \c min_marks     Minimum of all marks
+ * \li \c mean          Mean of all marks
+ * \li \c var           Variance of the marks
+ * \li \c std           Standard deviation of the marks
+ * \li \c numStudents   Total number of students in the class
+ *
+ * \par CMSIS DSP Software Library Functions Used:
+ * \par
+ * - arm_mat_init_f32()
+ * - arm_mat_mult_f32()
+ * - arm_max_f32()
+ * - arm_min_f32()
+ * - arm_mean_f32()
+ * - arm_std_f32()
+ * - arm_var_f32()
+ *
+ * <b> Refer  </b>
+ * \link arm_class_marks_example_f32.c \endlink
+ *
+ */
+
+
+/** \example arm_class_marks_example_f32.c
+  */
+#include "arm_math.h"
+
+#define USE_STATIC_INIT
+
+ /* ----------------------------------------------------------------------
+** Global defines
+** ------------------------------------------------------------------- */
+
+#define TEST_LENGTH_SAMPLES   (20*4)
+
+/* ----------------------------------------------------------------------
+** List of Marks scored by 20 students for 4 subjects
+** ------------------------------------------------------------------- */
+const float32_t testMarks_f32[TEST_LENGTH_SAMPLES] =
+{
+  42.000000,  37.000000,  81.000000,  28.000000,
+  83.000000,  72.000000,  36.000000,  38.000000,
+  32.000000,  51.000000,  63.000000,  64.000000,
+  97.000000,  82.000000,  95.000000,  90.000000,
+  66.000000,  51.000000,  54.000000,  42.000000,
+  67.000000,  56.000000,  45.000000,  57.000000,
+  67.000000,  69.000000,  35.000000,  52.000000,
+  29.000000,  81.000000,  58.000000,  47.000000,
+  38.000000,  76.000000, 100.000000,  29.000000,
+  33.000000,  47.000000,  29.000000,  50.000000,
+  34.000000,  41.000000,  61.000000,  46.000000,
+  52.000000,  50.000000,  48.000000,  36.000000,
+  47.000000,  55.000000,  44.000000,  40.000000,
+ 100.000000,  94.000000,  84.000000,  37.000000,
+  32.000000,  71.000000,  47.000000,  77.000000,
+  31.000000,  50.000000,  49.000000,  35.000000,
+  63.000000,  67.000000,  40.000000,  31.000000,
+  29.000000,  68.000000,  61.000000,  38.000000,
+  31.000000,  28.000000,  28.000000,  76.000000,
+  55.000000,  33.000000,  29.000000,  39.000000
+};
+
+
+/* ----------------------------------------------------------------------
+* Number of subjects X 1
+* ------------------------------------------------------------------- */
+const float32_t testUnity_f32[4] =
+{
+  1.000,  1.000,   1.000,  1.000
+};
+
+
+/* ----------------------------------------------------------------------
+** f32 Output buffer
+** ------------------------------------------------------------------- */
+static float32_t testOutput[TEST_LENGTH_SAMPLES];
+
+
+/* ------------------------------------------------------------------
+* Global defines
+*------------------------------------------------------------------- */
+#define   NUMSTUDENTS  20
+#define     NUMSUBJECTS  4
+
+/* ------------------------------------------------------------------
+* Global variables
+*------------------------------------------------------------------- */
+
+ uint32_t    numStudents = 20;
+ uint32_t    numSubjects = 4;
+float32_t    max_marks, min_marks, mean, std, var;
+ uint32_t    student_num;
+
+/* ----------------------------------------------------------------------------------
+* Main f32 test function.  It returns maximum marks secured and student number
+* ------------------------------------------------------------------------------- */
+
+int32_t main()
+{
+
+#ifndef  USE_STATIC_INIT
+
+  arm_matrix_instance_f32 srcA;
+  arm_matrix_instance_f32 srcB;
+  arm_matrix_instance_f32 dstC;
+
+  /* Input and output matrices initializations */
+  arm_mat_init_f32(&srcA, numStudents, numSubjects, (float32_t *)testMarks_f32);
+  arm_mat_init_f32(&srcB, numSubjects, 1, (float32_t *)testUnity_f32);
+  arm_mat_init_f32(&dstC, numStudents, 1, testOutput);
+
+#else
+
+  /* Static Initializations of Input and output matrix sizes and array */
+  arm_matrix_instance_f32 srcA = {NUMSTUDENTS, NUMSUBJECTS, (float32_t *)testMarks_f32};
+  arm_matrix_instance_f32 srcB = {NUMSUBJECTS, 1, (float32_t *)testUnity_f32};
+  arm_matrix_instance_f32 dstC = {NUMSTUDENTS, 1, testOutput};
+
+#endif
+
+
+  /* ----------------------------------------------------------------------
+  *Call the Matrix multiplication process function
+  * ------------------------------------------------------------------- */
+  arm_mat_mult_f32(&srcA, &srcB, &dstC);
+
+  /* ----------------------------------------------------------------------
+  ** Call the Max function to calculate max marks among numStudents
+  ** ------------------------------------------------------------------- */
+  arm_max_f32(testOutput, numStudents, &max_marks, &student_num);
+
+  /* ----------------------------------------------------------------------
+  ** Call the Min function to calculate min marks among numStudents
+  ** ------------------------------------------------------------------- */
+  arm_min_f32(testOutput, numStudents, &min_marks, &student_num);
+
+  /* ----------------------------------------------------------------------
+  ** Call the Mean function to calculate mean
+  ** ------------------------------------------------------------------- */
+  arm_mean_f32(testOutput, numStudents, &mean);
+
+  /* ----------------------------------------------------------------------
+  ** Call the std function to calculate standard deviation
+  ** ------------------------------------------------------------------- */
+  arm_std_f32(testOutput, numStudents, &std);
+
+  /* ----------------------------------------------------------------------
+  ** Call the var function to calculate variance
+  ** ------------------------------------------------------------------- */
+  arm_var_f32(testOutput, numStudents, &var);
+
+  while(1);                             /* main function does not return */
+}

+ 211 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_class_marks_example/GCC/arm_class_marks_example_f32.c

@@ -0,0 +1,211 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+*
+* $Date:         17. January 2013
+* $Revision:     V1.4.0
+*
+* Project:       CMSIS DSP Library
+* Title:         arm_class_marks_example_f32.c
+*
+* Description:   Example code to calculate Minimum, Maximum
+*                Mean, std and variance of marks obtained in a class
+*
+* 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 ClassMarks Class Marks Example
+ *
+ * \par Description:
+ * \par
+ * Demonstrates the use the Maximum, Minimum, Mean, Standard Deviation, Variance
+ * and Matrix functions to calculate statistical values of marks obtained in a class.
+ *
+ * \note This example also demonstrates the usage of static initialization.
+ *
+ * \par Variables Description:
+ * \par
+ * \li \c testMarks_f32 points to the marks scored by 20 students in 4 subjects
+ * \li \c max_marks     Maximum of all marks
+ * \li \c min_marks     Minimum of all marks
+ * \li \c mean          Mean of all marks
+ * \li \c var           Variance of the marks
+ * \li \c std           Standard deviation of the marks
+ * \li \c numStudents   Total number of students in the class
+ *
+ * \par CMSIS DSP Software Library Functions Used:
+ * \par
+ * - arm_mat_init_f32()
+ * - arm_mat_mult_f32()
+ * - arm_max_f32()
+ * - arm_min_f32()
+ * - arm_mean_f32()
+ * - arm_std_f32()
+ * - arm_var_f32()
+ *
+ * <b> Refer  </b>
+ * \link arm_class_marks_example_f32.c \endlink
+ *
+ */
+
+
+/** \example arm_class_marks_example_f32.c
+  */
+#include "arm_math.h"
+
+#define USE_STATIC_INIT
+
+ /* ----------------------------------------------------------------------
+** Global defines
+** ------------------------------------------------------------------- */
+
+#define TEST_LENGTH_SAMPLES   (20*4)
+
+/* ----------------------------------------------------------------------
+** List of Marks scored by 20 students for 4 subjects
+** ------------------------------------------------------------------- */
+const float32_t testMarks_f32[TEST_LENGTH_SAMPLES] =
+{
+  42.000000,  37.000000,  81.000000,  28.000000,
+  83.000000,  72.000000,  36.000000,  38.000000,
+  32.000000,  51.000000,  63.000000,  64.000000,
+  97.000000,  82.000000,  95.000000,  90.000000,
+  66.000000,  51.000000,  54.000000,  42.000000,
+  67.000000,  56.000000,  45.000000,  57.000000,
+  67.000000,  69.000000,  35.000000,  52.000000,
+  29.000000,  81.000000,  58.000000,  47.000000,
+  38.000000,  76.000000, 100.000000,  29.000000,
+  33.000000,  47.000000,  29.000000,  50.000000,
+  34.000000,  41.000000,  61.000000,  46.000000,
+  52.000000,  50.000000,  48.000000,  36.000000,
+  47.000000,  55.000000,  44.000000,  40.000000,
+ 100.000000,  94.000000,  84.000000,  37.000000,
+  32.000000,  71.000000,  47.000000,  77.000000,
+  31.000000,  50.000000,  49.000000,  35.000000,
+  63.000000,  67.000000,  40.000000,  31.000000,
+  29.000000,  68.000000,  61.000000,  38.000000,
+  31.000000,  28.000000,  28.000000,  76.000000,
+  55.000000,  33.000000,  29.000000,  39.000000
+};
+
+
+/* ----------------------------------------------------------------------
+* Number of subjects X 1
+* ------------------------------------------------------------------- */
+const float32_t testUnity_f32[4] =
+{
+  1.000,  1.000,   1.000,  1.000
+};
+
+
+/* ----------------------------------------------------------------------
+** f32 Output buffer
+** ------------------------------------------------------------------- */
+static float32_t testOutput[TEST_LENGTH_SAMPLES];
+
+
+/* ------------------------------------------------------------------
+* Global defines
+*------------------------------------------------------------------- */
+#define   NUMSTUDENTS  20
+#define     NUMSUBJECTS  4
+
+/* ------------------------------------------------------------------
+* Global variables
+*------------------------------------------------------------------- */
+
+ uint32_t    numStudents = 20;
+ uint32_t    numSubjects = 4;
+float32_t    max_marks, min_marks, mean, std, var;
+ uint32_t    student_num;
+
+/* ----------------------------------------------------------------------------------
+* Main f32 test function.  It returns maximum marks secured and student number
+* ------------------------------------------------------------------------------- */
+
+int32_t main()
+{
+
+#ifndef  USE_STATIC_INIT
+
+  arm_matrix_instance_f32 srcA;
+  arm_matrix_instance_f32 srcB;
+  arm_matrix_instance_f32 dstC;
+
+  /* Input and output matrices initializations */
+  arm_mat_init_f32(&srcA, numStudents, numSubjects, (float32_t *)testMarks_f32);
+  arm_mat_init_f32(&srcB, numSubjects, 1, (float32_t *)testUnity_f32);
+  arm_mat_init_f32(&dstC, numStudents, 1, testOutput);
+
+#else
+
+  /* Static Initializations of Input and output matrix sizes and array */
+  arm_matrix_instance_f32 srcA = {NUMSTUDENTS, NUMSUBJECTS, (float32_t *)testMarks_f32};
+  arm_matrix_instance_f32 srcB = {NUMSUBJECTS, 1, (float32_t *)testUnity_f32};
+  arm_matrix_instance_f32 dstC = {NUMSTUDENTS, 1, testOutput};
+
+#endif
+
+
+  /* ----------------------------------------------------------------------
+  *Call the Matrix multiplication process function
+  * ------------------------------------------------------------------- */
+  arm_mat_mult_f32(&srcA, &srcB, &dstC);
+
+  /* ----------------------------------------------------------------------
+  ** Call the Max function to calculate max marks among numStudents
+  ** ------------------------------------------------------------------- */
+  arm_max_f32(testOutput, numStudents, &max_marks, &student_num);
+
+  /* ----------------------------------------------------------------------
+  ** Call the Min function to calculate min marks among numStudents
+  ** ------------------------------------------------------------------- */
+  arm_min_f32(testOutput, numStudents, &min_marks, &student_num);
+
+  /* ----------------------------------------------------------------------
+  ** Call the Mean function to calculate mean
+  ** ------------------------------------------------------------------- */
+  arm_mean_f32(testOutput, numStudents, &mean);
+
+  /* ----------------------------------------------------------------------
+  ** Call the std function to calculate standard deviation
+  ** ------------------------------------------------------------------- */
+  arm_std_f32(testOutput, numStudents, &std);
+
+  /* ----------------------------------------------------------------------
+  ** Call the var function to calculate variance
+  ** ------------------------------------------------------------------- */
+  arm_var_f32(testOutput, numStudents, &var);
+
+  while(1);                             /* main function does not return */
+}

+ 247 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_convolution_example/ARM/arm_convolution_example_f32.c

@@ -0,0 +1,247 @@
+/* ----------------------------------------------------------------------
+* 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 */

+ 458 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_convolution_example/ARM/math_helper.c

@@ -0,0 +1,458 @@
+/* ----------------------------------------------------------------------   
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.   
+*   
+* $Date:        17. January 2013  
+* $Revision: 	V1.4.0    
+*  
+* 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  float* 	Pointer to the reference buffer
+ * @param  float*	Pointer to the test buffer
+ * @param  uint32_t	total number of samples
+ * @return float	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  q15_t* 	    Pointer to input buffer
+ * @param  uint32_t 	blockSize
+ * @param  uint32_t 	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  uint32_t 	number of samples in the 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  q15_t* 	Pointer to Ref buffer
+ * @param  q15_t* 	Pointer to Test buffer
+ * @param  uint32_t 	number of samples in the buffer
+ * @return none 
+ */
+
+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  q31_t* 	Pointer to Ref buffer
+ * @param  q31_t* 	Pointer to Test buffer
+ * @param  uint32_t 	number of samples in the buffer
+ * @return none 
+ */
+
+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  q31_t* 	Pointer to input buffer
+ * @param  uint32_t 	blockSize
+ * @param  uint32_t 	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  q31_t* 	Pointer to input buffer
+ * @param  uint32_t 	blockSize
+ * @param  uint32_t 	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  uint32_t 	number of additions
+ * @return none
+ * 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  Converts Q15 to floating-point
+ * @param  uint32_t 	number of samples in the buffer
+ * @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  uint32_t 	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  uint32_t 	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  uint32_t 	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  uint32_t 	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  uint32_t 	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  pIn 	input buffer
+ * @param  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;
+	  }
+	       
+    }
+}
+
+
+
+

+ 63 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_convolution_example/ARM/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
+

+ 247 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_convolution_example/GCC/arm_convolution_example_f32.c

@@ -0,0 +1,247 @@
+/* ----------------------------------------------------------------------
+* 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 */

+ 458 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_convolution_example/GCC/math_helper.c

@@ -0,0 +1,458 @@
+/* ----------------------------------------------------------------------   
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.   
+*   
+* $Date:        17. January 2013  
+* $Revision: 	V1.4.0    
+*  
+* 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  float* 	Pointer to the reference buffer
+ * @param  float*	Pointer to the test buffer
+ * @param  uint32_t	total number of samples
+ * @return float	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  q15_t* 	    Pointer to input buffer
+ * @param  uint32_t 	blockSize
+ * @param  uint32_t 	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  uint32_t 	number of samples in the 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  q15_t* 	Pointer to Ref buffer
+ * @param  q15_t* 	Pointer to Test buffer
+ * @param  uint32_t 	number of samples in the buffer
+ * @return none 
+ */
+
+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  q31_t* 	Pointer to Ref buffer
+ * @param  q31_t* 	Pointer to Test buffer
+ * @param  uint32_t 	number of samples in the buffer
+ * @return none 
+ */
+
+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  q31_t* 	Pointer to input buffer
+ * @param  uint32_t 	blockSize
+ * @param  uint32_t 	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  q31_t* 	Pointer to input buffer
+ * @param  uint32_t 	blockSize
+ * @param  uint32_t 	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  uint32_t 	number of additions
+ * @return none
+ * 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  Converts Q15 to floating-point
+ * @param  uint32_t 	number of samples in the buffer
+ * @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  uint32_t 	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  uint32_t 	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  uint32_t 	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  uint32_t 	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  uint32_t 	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  pIn 	input buffer
+ * @param  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;
+	  }
+	       
+    }
+}
+
+
+
+

+ 63 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_convolution_example/GCC/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
+

+ 178 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_dotproduct_example/ARM/arm_dotproduct_example_f32.c

@@ -0,0 +1,178 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+*
+* $Date:         17. January 2013
+* $Revision:     V1.4.0
+*
+* Project:       CMSIS DSP Library
+* Title:         arm_dotproduct_example_f32.c
+*
+* Description:   Example code computing dot product of two vectors.
+*
+* 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 DotproductExample Dot Product Example
+ *
+ * \par Description:
+ * \par
+ * Demonstrates the use of the Multiply and Add functions to perform the dot product.
+ * The dot product of two vectors is obtained by multiplying corresponding elements
+ * and summing the products.
+
+ * \par Algorithm:
+ * \par
+ * The two input vectors \c A and \c B with length \c n, are multiplied element-by-element
+ * and then added to obtain dot product.
+ * \par
+ * This is denoted by the following equation:
+ *         <pre>  dotProduct = A[0] * B[0] + A[1] * B[1] + ... + A[n-1] * B[n-1]</pre>
+ *
+ * \par Block Diagram:
+ * \par
+ * \image html dotProduct.gif
+ *
+ * \par Variables Description:
+ * \par
+ * \li \c srcA_buf_f32 points to first input vector
+ * \li \c srcB_buf_f32 points to second input vector
+ * \li \c testOutput   stores dot product of the two input vectors.
+ *
+ * \par CMSIS DSP Software Library Functions Used:
+ * \par
+ * - arm_mult_f32()
+ * - arm_add_f32()
+ *
+ * <b> Refer  </b>
+ * \link arm_dotproduct_example_f32.c \endlink
+ *
+ */
+
+
+/** \example arm_dotproduct_example_f32.c
+  */
+
+#include <math.h>
+#include "arm_math.h"
+
+/* ----------------------------------------------------------------------
+* Defines each of the tests performed
+* ------------------------------------------------------------------- */
+#define MAX_BLOCKSIZE     32
+#define DELTA           (0.000001f)
+
+/* ----------------------------------------------------------------------
+* Test input data for Floating point Dot Product example for 32-blockSize
+* Generated by the MATLAB randn() function
+* ------------------------------------------------------------------- */
+/* ----------------------------------------------------------------------
+** Test input data of srcA for blockSize 32
+** ------------------------------------------------------------------- */
+float32_t srcA_buf_f32[MAX_BLOCKSIZE] =
+{
+  -0.4325648115282207,  -1.6655843782380970,  0.1253323064748307,
+   0.2876764203585489,  -1.1464713506814637,  1.1909154656429988,
+   1.1891642016521031,  -0.0376332765933176,  0.3272923614086541,
+   0.1746391428209245,  -0.1867085776814394,  0.7257905482933027,
+  -0.5883165430141887,   2.1831858181971011, -0.1363958830865957,
+   0.1139313135208096,   1.0667682113591888,  0.0592814605236053,
+  -0.0956484054836690,  -0.8323494636500225,  0.2944108163926404,
+  -1.3361818579378040,   0.7143245518189522,  1.6235620644462707,
+  -0.6917757017022868,   0.8579966728282626,  1.2540014216025324,
+  -1.5937295764474768,  -1.4409644319010200,  0.5711476236581780,
+  -0.3998855777153632,   0.6899973754643451
+};
+
+/* ----------------------------------------------------------------------
+** Test input data of srcB for blockSize 32
+** ------------------------------------------------------------------- */
+float32_t srcB_buf_f32[MAX_BLOCKSIZE] =
+{
+   1.7491401329284098,  0.1325982188803279,   0.3252281811989881,
+  -0.7938091410349637,  0.3149236145048914,  -0.5272704888029532,
+   0.9322666565031119,  1.1646643544607362,  -2.0456694357357357,
+  -0.6443728590041911,  1.7410657940825480,   0.4867684246821860,
+   1.0488288293660140,  1.4885752747099299,   1.2705014969484090,
+  -1.8561241921210170,  2.1343209047321410,  1.4358467535865909,
+  -0.9173023332875400, -1.1060770780029008,   0.8105708062681296,
+   0.6985430696369063, -0.4015827425012831,   1.2687512030669628,
+  -0.7836083053674872,  0.2132664971465569,   0.7878984786088954,
+   0.8966819356782295, -0.1869172943544062,   1.0131816724341454,
+   0.2484350696132857,  0.0596083377937976
+};
+
+/* Reference dot product output */
+float32_t  refDotProdOut = 5.9273644806352142;
+
+/* ----------------------------------------------------------------------
+* Declare Global variables
+* ------------------------------------------------------------------- */
+float32_t multOutput[MAX_BLOCKSIZE];  /* Intermediate output */
+float32_t testOutput;  /* Final ouput */
+
+arm_status status;   /* Status of the example */
+
+int32_t main(void)
+{
+  uint32_t i;       /* Loop counter */
+  float32_t diff;     /* Difference between reference and test outputs */
+
+  /* Multiplication of two input buffers */
+  arm_mult_f32(srcA_buf_f32, srcB_buf_f32, multOutput, MAX_BLOCKSIZE);
+
+  /* Accumulate the multiplication output values to
+     get the dot product of the two inputs */
+  for(i=0; i< MAX_BLOCKSIZE; i++)
+  {
+    arm_add_f32(&testOutput, &multOutput[i], &testOutput, 1);
+  }
+
+  /* absolute value of difference between ref and test */
+  diff = fabsf(refDotProdOut - testOutput);
+
+  /* Comparison of dot product value with reference */
+  if(diff > DELTA)
+  {
+    status = ARM_MATH_TEST_FAILURE;
+  }
+
+  if( status == ARM_MATH_TEST_FAILURE)
+  {
+    while(1);
+  }
+
+  while(1);                             /* main function does not return */
+}
+
+ /** \endlink */

+ 178 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_dotproduct_example/GCC/arm_dotproduct_example_f32.c

@@ -0,0 +1,178 @@
+/* ----------------------------------------------------------------------
+* Copyright (C) 2010-2012 ARM Limited. All rights reserved.
+*
+* $Date:         17. January 2013
+* $Revision:     V1.4.0
+*
+* Project:       CMSIS DSP Library
+* Title:         arm_dotproduct_example_f32.c
+*
+* Description:   Example code computing dot product of two vectors.
+*
+* 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 DotproductExample Dot Product Example
+ *
+ * \par Description:
+ * \par
+ * Demonstrates the use of the Multiply and Add functions to perform the dot product.
+ * The dot product of two vectors is obtained by multiplying corresponding elements
+ * and summing the products.
+
+ * \par Algorithm:
+ * \par
+ * The two input vectors \c A and \c B with length \c n, are multiplied element-by-element
+ * and then added to obtain dot product.
+ * \par
+ * This is denoted by the following equation:
+ *         <pre>  dotProduct = A[0] * B[0] + A[1] * B[1] + ... + A[n-1] * B[n-1]</pre>
+ *
+ * \par Block Diagram:
+ * \par
+ * \image html dotProduct.gif
+ *
+ * \par Variables Description:
+ * \par
+ * \li \c srcA_buf_f32 points to first input vector
+ * \li \c srcB_buf_f32 points to second input vector
+ * \li \c testOutput   stores dot product of the two input vectors.
+ *
+ * \par CMSIS DSP Software Library Functions Used:
+ * \par
+ * - arm_mult_f32()
+ * - arm_add_f32()
+ *
+ * <b> Refer  </b>
+ * \link arm_dotproduct_example_f32.c \endlink
+ *
+ */
+
+
+/** \example arm_dotproduct_example_f32.c
+  */
+
+#include <math.h>
+#include "arm_math.h"
+
+/* ----------------------------------------------------------------------
+* Defines each of the tests performed
+* ------------------------------------------------------------------- */
+#define MAX_BLOCKSIZE     32
+#define DELTA           (0.000001f)
+
+/* ----------------------------------------------------------------------
+* Test input data for Floating point Dot Product example for 32-blockSize
+* Generated by the MATLAB randn() function
+* ------------------------------------------------------------------- */
+/* ----------------------------------------------------------------------
+** Test input data of srcA for blockSize 32
+** ------------------------------------------------------------------- */
+float32_t srcA_buf_f32[MAX_BLOCKSIZE] =
+{
+  -0.4325648115282207,  -1.6655843782380970,  0.1253323064748307,
+   0.2876764203585489,  -1.1464713506814637,  1.1909154656429988,
+   1.1891642016521031,  -0.0376332765933176,  0.3272923614086541,
+   0.1746391428209245,  -0.1867085776814394,  0.7257905482933027,
+  -0.5883165430141887,   2.1831858181971011, -0.1363958830865957,
+   0.1139313135208096,   1.0667682113591888,  0.0592814605236053,
+  -0.0956484054836690,  -0.8323494636500225,  0.2944108163926404,
+  -1.3361818579378040,   0.7143245518189522,  1.6235620644462707,
+  -0.6917757017022868,   0.8579966728282626,  1.2540014216025324,
+  -1.5937295764474768,  -1.4409644319010200,  0.5711476236581780,
+  -0.3998855777153632,   0.6899973754643451
+};
+
+/* ----------------------------------------------------------------------
+** Test input data of srcB for blockSize 32
+** ------------------------------------------------------------------- */
+float32_t srcB_buf_f32[MAX_BLOCKSIZE] =
+{
+   1.7491401329284098,  0.1325982188803279,   0.3252281811989881,
+  -0.7938091410349637,  0.3149236145048914,  -0.5272704888029532,
+   0.9322666565031119,  1.1646643544607362,  -2.0456694357357357,
+  -0.6443728590041911,  1.7410657940825480,   0.4867684246821860,
+   1.0488288293660140,  1.4885752747099299,   1.2705014969484090,
+  -1.8561241921210170,  2.1343209047321410,  1.4358467535865909,
+  -0.9173023332875400, -1.1060770780029008,   0.8105708062681296,
+   0.6985430696369063, -0.4015827425012831,   1.2687512030669628,
+  -0.7836083053674872,  0.2132664971465569,   0.7878984786088954,
+   0.8966819356782295, -0.1869172943544062,   1.0131816724341454,
+   0.2484350696132857,  0.0596083377937976
+};
+
+/* Reference dot product output */
+float32_t  refDotProdOut = 5.9273644806352142;
+
+/* ----------------------------------------------------------------------
+* Declare Global variables
+* ------------------------------------------------------------------- */
+float32_t multOutput[MAX_BLOCKSIZE];  /* Intermediate output */
+float32_t testOutput;  /* Final ouput */
+
+arm_status status;   /* Status of the example */
+
+int32_t main(void)
+{
+  uint32_t i;       /* Loop counter */
+  float32_t diff;     /* Difference between reference and test outputs */
+
+  /* Multiplication of two input buffers */
+  arm_mult_f32(srcA_buf_f32, srcB_buf_f32, multOutput, MAX_BLOCKSIZE);
+
+  /* Accumulate the multiplication output values to
+     get the dot product of the two inputs */
+  for(i=0; i< MAX_BLOCKSIZE; i++)
+  {
+    arm_add_f32(&testOutput, &multOutput[i], &testOutput, 1);
+  }
+
+  /* absolute value of difference between ref and test */
+  diff = fabsf(refDotProdOut - testOutput);
+
+  /* Comparison of dot product value with reference */
+  if(diff > DELTA)
+  {
+    status = ARM_MATH_TEST_FAILURE;
+  }
+
+  if( status == ARM_MATH_TEST_FAILURE)
+  {
+    while(1);
+  }
+
+  while(1);                             /* main function does not return */
+}
+
+ /** \endlink */

+ 308 - 0
Drivers/CMSIS/DSP_Lib/Examples/arm_fft_bin_example/ARM/arm_fft_bin_data.c

@@ -0,0 +1,308 @@
+/* ----------------------------------------------------------------------   
+* 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_data.c
+*   
+* Description:	 Data file used for example code
+*   
+* 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 signal contains 10KHz signal + Uniformly distributed white noise
+** ------------------------------------------------------------------- */
+
+float32_t testInput_f32_10khz[2048] = 
+{   
+-0.865129623056441, 	0.000000000000000, 	-2.655020678073846, 	0.000000000000000, 	0.600664612949661, 	0.000000000000000, 	0.080378093886515, 	0.000000000000000, 	
+-2.899160484012034, 	0.000000000000000, 	2.563004262857762, 	0.000000000000000, 	3.078328403304206, 	0.000000000000000, 	0.105906778385130, 	0.000000000000000, 	
+0.048366940168201, 	0.000000000000000, 	-0.145696461188734, 	0.000000000000000, 	-0.023417155362879, 	0.000000000000000, 	2.127729174988954, 	0.000000000000000, 	
+-1.176633086028377, 	0.000000000000000, 	3.690223557991855, 	0.000000000000000, 	-0.622791766173194, 	0.000000000000000, 	0.722837373872203, 	0.000000000000000, 	
+2.739754205367484, 	0.000000000000000, 	-0.062610410524552, 	0.000000000000000, 	-0.891296810967338, 	0.000000000000000, 	-1.845872258871811, 	0.000000000000000, 	
+1.195039415434387, 	0.000000000000000, 	-2.177388969045026, 	0.000000000000000, 	1.078649103637905, 	0.000000000000000, 	2.570976050490193, 	0.000000000000000, 	
+-1.383551403404574, 	0.000000000000000, 	2.392141424058873, 	0.000000000000000, 	2.858002843205065, 	0.000000000000000, 	-3.682433899725536, 	0.000000000000000, 	
+-3.488146646451150, 	0.000000000000000, 	1.323468578888120, 	0.000000000000000, 	-0.099771155430726, 	0.000000000000000, 	1.561168082500454, 	0.000000000000000, 	
+1.025026795103179, 	0.000000000000000, 	0.928841900171200, 	0.000000000000000, 	2.930499509864950, 	0.000000000000000, 	2.013349089766430, 	0.000000000000000, 	
+2.381676148486737, 	0.000000000000000, 	-3.081062307950236, 	0.000000000000000, 	-0.389579115537544, 	0.000000000000000, 	0.181540149166620, 	0.000000000000000, 	
+-2.601953341353208, 	0.000000000000000, 	0.333435137783218, 	0.000000000000000, 	-2.812945856162965, 	0.000000000000000, 	2.649109640172910, 	0.000000000000000, 	
+-1.003963025744654, 	0.000000000000000, 	1.552460768755035, 	0.000000000000000, 	0.088641345335247, 	0.000000000000000, 	-2.519951327113426, 	0.000000000000000, 	
+-4.341348988610527, 	0.000000000000000, 	0.557772429359965, 	0.000000000000000, 	-1.671267412948494, 	0.000000000000000, 	0.733951350960387, 	0.000000000000000, 	
+0.409263788034864, 	0.000000000000000, 	3.566033071952806, 	0.000000000000000, 	1.882565173848352, 	0.000000000000000, 	-1.106017073793287, 	0.000000000000000, 	
+0.154456720778718, 	0.000000000000000, 	-2.513205795512153, 	0.000000000000000, 	0.310978660939421, 	0.000000000000000, 	0.579706500111723, 	0.000000000000000, 	
+0.000086383683251, 	0.000000000000000, 	-1.311866980897721, 	0.000000000000000, 	1.840007477574986, 	0.000000000000000, 	-3.253005768451345, 	0.000000000000000, 	
+1.462584328739432, 	0.000000000000000, 	1.610103610851738, 	0.000000000000000, 	0.761914676858907, 	0.000000000000000, 	0.974541361089834, 	0.000000000000000, 	
+0.686845845885983, 	0.000000000000000, 	1.849153122025191, 	0.000000000000000, 	0.787800410401453, 	0.000000000000000, 	-1.187438909666279, 	0.000000000000000, 	
+-0.754937911044720, 	0.000000000000000, 	0.084373858395232, 	0.000000000000000, 	-2.600269011710521, 	0.000000000000000, 	-0.962982842142644, 	0.000000000000000, 	
+-0.369328108540868, 	0.000000000000000, 	0.810791418361879, 	0.000000000000000, 	3.587016488699641, 	0.000000000000000, 	-0.520776145083723, 	0.000000000000000, 	
+0.640249919627884, 	0.000000000000000, 	1.103122489464969, 	0.000000000000000, 	2.231779881455556, 	0.000000000000000, 	-1.308035392685241, 	0.000000000000000, 	
+0.424070304330106, 	0.000000000000000, 	-0.200383932651189, 	0.000000000000000, 	-2.365526783356541, 	0.000000000000000, 	-0.989114757436628, 	0.000000000000000, 	
+2.770807688959777, 	0.000000000000000, 	-0.444172737462307, 	0.000000000000000, 	0.079760979374078, 	0.000000000000000, 	-0.005199118412183, 	0.000000000000000, 	
+-0.664712668309527, 	0.000000000000000, 	-0.624171857561896, 	0.000000000000000, 	0.537306979007338, 	0.000000000000000, 	-2.575955675497642, 	0.000000000000000, 	
+1.562363235756780, 	0.000000000000000, 	1.814069369848895, 	0.000000000000000, 	-1.293428583392509, 	0.000000000000000, 	-1.026188449495686, 	0.000000000000000, 	
+-2.981771815588717, 	0.000000000000000, 	-4.223468103075124, 	0.000000000000000, 	2.672674782004045, 	0.000000000000000, 	-0.856096801117735, 	0.000000000000000, 	
+0.048517345512563, 	0.000000000000000, 	-0.026860721136222, 	0.000000000000000, 	0.392932277758187, 	0.000000000000000, 	-1.331740855093099, 	0.000000000000000, 	
+-1.894292129477081, 	0.000000000000000, 	-1.425006468460681, 	0.000000000000000, 	-2.721772427617057, 	0.000000000000000, 	-1.616831100216806, 	0.000000000000000, 	
+3.551177651488947, 	0.000000000000000, 	-0.069685667896087, 	0.000000000000000, 	-3.134634907409102, 	0.000000000000000, 	-0.263627598944639, 	0.000000000000000, 	
+-1.650469945991350, 	0.000000000000000, 	-2.203580339374399, 	0.000000000000000, 	-0.872203246123242, 	0.000000000000000, 	1.230782812607287, 	0.000000000000000, 	
+0.257288860093291, 	0.000000000000000, 	1.989083106173137, 	0.000000000000000, 	-1.985638729453261, 	0.000000000000000, 	-1.416185105842892, 	0.000000000000000, 	
+-1.131097688325772, 	0.000000000000000, 	-2.245130805416057, 	0.000000000000000, 	-1.938873996219074, 	0.000000000000000, 	2.043608361562645, 	0.000000000000000, 	
+-0.583727989880841, 	0.000000000000000, 	-1.785266378212929, 	0.000000000000000, 	1.961457586224753, 	0.000000000000000, 	1.139400099963223, 	0.000000000000000, 	
+-1.979519343363991, 	0.000000000000000, 	2.003023322818429, 	0.000000000000000, 	0.229004069076829, 	0.000000000000000, 	3.452808862193135, 	0.000000000000000, 	
+2.882273808365857, 	0.000000000000000, 	-1.549450501844438, 	0.000000000000000, 	-3.283872089931876, 	0.000000000000000, 	-0.327025884099064, 	0.000000000000000, 	
+-0.054979977136430, 	0.000000000000000, 	-1.192280531479012, 	0.000000000000000, 	0.645539328365578, 	0.000000000000000, 	2.300832863404618, 	0.000000000000000, 	
+-1.092951789535240, 	0.000000000000000, 	-1.017368249363773, 	0.000000000000000, 	-0.142673056169787, 	0.000000000000000, 	0.831073544881250, 	0.000000000000000, 	
+-2.314612531587064, 	0.000000000000000, 	-2.221456299106321, 	0.000000000000000, 	0.460261143885226, 	0.000000000000000, 	0.050585301888595, 	0.000000000000000, 	
+0.364373329183988, 	0.000000000000000, 	-1.685956552069538, 	0.000000000000000, 	0.050664512351055, 	0.000000000000000, 	-0.193355783902718, 	0.000000000000000, 	
+-0.158660446046828, 	0.000000000000000, 	2.394156453841953, 	0.000000000000000, 	-1.562965718554525, 	0.000000000000000, 	-2.199750600869900, 	0.000000000000000, 	
+1.544984022381773, 	0.000000000000000, 	-1.988307216807315, 	0.000000000000000, 	-0.628240722541046, 	0.000000000000000, 	-1.436235771505429, 	0.000000000000000, 	
+1.677013691147313, 	0.000000000000000, 	1.600741781678228, 	0.000000000000000, 	-0.757380959134706, 	0.000000000000000, 	-4.784797439515566, 	0.000000000000000, 	
+0.265121462834569, 	0.000000000000000, 	3.862029485934378, 	0.000000000000000, 	2.386823577249430, 	0.000000000000000, 	-3.655779745436893, 	0.000000000000000, 	
+-0.763541621368016, 	0.000000000000000, 	-1.182140388432962, 	0.000000000000000, 	-1.349106114858063, 	0.000000000000000, 	-2.287533624396759, 	0.000000000000000, 	
+-0.028603745188423, 	0.000000000000000, 	-1.353580755934427, 	0.000000000000000, 	0.461602380352937, 	0.000000000000000, 	-0.059599055078928, 	0.000000000000000, 	
+-0.929946734342228, 	0.000000000000000, 	0.065773089295561, 	0.000000000000000, 	1.106565863102982, 	0.000000000000000, 	4.719295086373593, 	0.000000000000000, 	
+-2.108377703544395, 	0.000000000000000, 	-2.226393620240159, 	0.000000000000000, 	1.375668397437521, 	0.000000000000000, 	-0.960772428525443, 	0.000000000000000, 	
+-2.156313465390571, 	0.000000000000000, 	1.126060012375311, 	0.000000000000000, 	2.756485137030720, 	0.000000000000000, 	0.739639690862600, 	0.000000000000000, 	
+3.914769510295006, 	0.000000000000000, 	1.685232785586675, 	0.000000000000000, 	4.079058040970612, 	0.000000000000000, 	-1.174598301660513, 	0.000000000000000, 	
+-2.885776587275580, 	0.000000000000000, 	-0.241073635188767, 	0.000000000000000, 	3.080489872502403, 	0.000000000000000, 	-2.051244183999421, 	0.000000000000000, 	
+0.664330486845139, 	0.000000000000000, 	-1.697798999370016, 	0.000000000000000, 	1.452369423649782, 	0.000000000000000, 	-1.523532831019280, 	0.000000000000000, 	
+0.171981186587481, 	0.000000000000000, 	-4.685274721583927, 	0.000000000000000, 	-1.336175835319380, 	0.000000000000000, 	1.419070770428945, 	0.000000000000000, 	
+-0.035791601713475, 	0.000000000000000, 	2.291937971632081, 	0.000000000000000, 	-1.962559313450293, 	0.000000000000000, 	-4.831595589339301, 	0.000000000000000, 	
+-1.857055284000925, 	0.000000000000000, 	2.606271522635512, 	0.000000000000000, 	-0.576447978738030, 	0.000000000000000, 	0.082299166967720, 	0.000000000000000, 	
+1.888399453494614, 	0.000000000000000, 	-3.564705298046079, 	0.000000000000000, 	-0.939357831083889, 	0.000000000000000, 	-1.903578203697778, 	0.000000000000000, 	
+-2.642492215447250, 	0.000000000000000, 	-0.182990405251017, 	0.000000000000000, 	3.742026478011174, 	0.000000000000000, 	0.104295803798333, 	0.000000000000000, 	
+1.848678195370347, 	0.000000000000000, 	-1.887384346896369, 	0.000000000000000, 	0.365048973046045, 	0.000000000000000, 	-0.889638010354219, 	0.000000000000000, 	
+1.173877118428863, 	0.000000000000000, 	-1.178562827540109, 	0.000000000000000, 	0.610271645685184, 	0.000000000000000, 	1.831284815697871, 	0.000000000000000, 	
+0.449575390102283, 	0.000000000000000, 	1.597171905253443, 	0.000000000000000, 	3.918574971904773, 	0.000000000000000, 	0.868104027970404, 	0.000000000000000, 	
+0.582643134746494, 	0.000000000000000, 	2.321256382353331, 	0.000000000000000, 	-0.238118642223180, 	0.000000000000000, 	-2.890287868054370, 	0.000000000000000, 	
+0.970995414625622, 	0.000000000000000, 	0.666137930891283, 	0.000000000000000, 	-0.202435718709502, 	0.000000000000000, 	2.057930200518194, 	0.000000000000000, 	
+3.120583443719949, 	0.000000000000000, 	-0.863945271701041, 	0.000000000000000, 	0.906848893874630, 	0.000000000000000, 	-1.434124930222570, 	0.000000000000000, 	
+0.754659384848783, 	0.000000000000000, 	-5.224154442713778, 	0.000000000000000, 	2.330229744098967, 	0.000000000000000, 	1.113946320164698, 	0.000000000000000, 	
+0.523324920322840, 	0.000000000000000, 	1.750740911548348, 	0.000000000000000, 	-0.899333972913577, 	0.000000000000000, 	0.228705845203506, 	0.000000000000000, 	
+-1.934782624767648, 	0.000000000000000, 	-3.508386237231303, 	0.000000000000000, 	-2.107108523073510, 	0.000000000000000, 	0.380587645474815, 	0.000000000000000, 	
+-0.476200877183279, 	0.000000000000000, 	-2.172086712642198, 	0.000000000000000, 	1.795372535780299, 	0.000000000000000, 	-2.100318983391055, 	0.000000000000000, 	
+-0.022571122461405, 	0.000000000000000, 	0.674514020010955, 	0.000000000000000, 	-0.148872569390857, 	0.000000000000000, 	0.298175890592737, 	0.000000000000000, 	
+-1.134244492493590, 	0.000000000000000, 	-3.146848422289455, 	0.000000000000000, 	-1.357950199087602, 	0.000000000000000, 	0.667362732020878, 	0.000000000000000, 	
+-3.119397998316724, 	0.000000000000000, 	-1.189341126297637, 	0.000000000000000, 	-1.532744386856668, 	0.000000000000000, 	-1.672972484202534, 	0.000000000000000, 	
+-2.042283373871558, 	0.000000000000000, 	-1.479481547595924, 	0.000000000000000, 	-0.002668662875396, 	0.000000000000000, 	0.262737760129546, 	0.000000000000000, 	
+2.734456080621830, 	0.000000000000000, 	-0.671945925075102, 	0.000000000000000, 	-3.735078262179111, 	0.000000000000000, 	-0.161705013319883, 	0.000000000000000, 	
+0.748963512361001, 	0.000000000000000, 	1.128046374367600, 	0.000000000000000, 	0.649651335592966, 	0.000000000000000, 	1.880020215025867, 	0.000000000000000, 	
+-1.095632293842306, 	0.000000000000000, 	1.197764876160487, 	0.000000000000000, 	0.323646656252985, 	0.000000000000000, 	-1.655502751114502, 	0.000000000000000, 	
+3.666399062961496, 	0.000000000000000, 	-0.334060899735197, 	0.000000000000000, 	-2.119056978738397, 	0.000000000000000, 	3.721375117275012, 	0.000000000000000, 	
+0.044874186872307, 	0.000000000000000, 	-2.733053897593234, 	0.000000000000000, 	1.590700278891042, 	0.000000000000000, 	3.215711772781902, 	0.000000000000000, 	
+-1.792085012843801, 	0.000000000000000, 	-0.405797188885475, 	0.000000000000000, 	-0.628080020080892, 	0.000000000000000, 	-1.831815840843960, 	0.000000000000000, 	
+2.973656862522834, 	0.000000000000000, 	-0.212032655138417, 	0.000000000000000, 	0.372437389437234, 	0.000000000000000, 	-1.614030579023492, 	0.000000000000000, 	
+-0.704900996358698, 	0.000000000000000, 	1.123700273452105, 	0.000000000000000, 	-0.136371848130819, 	0.000000000000000, 	3.020284357635585, 	0.000000000000000, 	
+-0.550211350877649, 	0.000000000000000, 	5.101256236381711, 	0.000000000000000, 	3.367051512192333, 	0.000000000000000, 	-4.385131946669234, 	0.000000000000000, 	
+-3.967303337694391, 	0.000000000000000, 	-0.965894936640022, 	0.000000000000000, 	0.328366945264681, 	0.000000000000000, 	0.199041562924914, 	0.000000000000000, 	
+1.067681999025495, 	0.000000000000000, 	-1.939516091697170, 	0.000000000000000, 	-1.092980954328824, 	0.000000000000000, 	0.273786079368066, 	0.000000000000000, 	
+-0.040928322190265, 	0.000000000000000, 	-0.118368078577437, 	0.000000000000000, 	1.766589628899997, 	0.000000000000000, 	1.738321311635393, 	0.000000000000000, 	
+-2.895012794321649, 	0.000000000000000, 	1.213521771395142, 	0.000000000000000, 	0.922971726633985, 	0.000000000000000, 	1.091516563636489, 	0.000000000000000, 	
+3.226378465469620, 	0.000000000000000, 	1.149169778666974, 	0.000000000000000, 	-1.695986327709386, 	0.000000000000000, 	-0.974803077355813, 	0.000000000000000, 	
+-4.898035507513607, 	0.000000000000000, 	1.622719302889447, 	0.000000000000000, 	0.583891313586579, 	0.000000000000000, 	-1.677182424094957, 	0.000000000000000, 	
+-1.915633132814685, 	0.000000000000000, 	-1.980150370851616, 	0.000000000000000, 	0.604538269404190, 	0.000000000000000, 	0.939862406149365, 	0.000000000000000, 	
+-1.266939874246416, 	0.000000000000000, 	-1.494771249200063, 	0.000000000000000, 	0.278042784093988, 	0.000000000000000, 	0.326627416008916, 	0.000000000000000, 	
+-1.914530157643303, 	0.000000000000000, 	1.908947721862196, 	0.000000000000000, 	0.531819285694044, 	0.000000000000000, 	3.056856632319658, 	0.000000000000000, 	
+-0.389241827774643, 	0.000000000000000, 	-2.418606606780420, 	0.000000000000000, 	0.915299238878703, 	0.000000000000000, 	-0.098774174295283, 	0.000000000000000, 	
+-0.906199428444304, 	0.000000000000000, 	0.316716451217743, 	0.000000000000000, 	-4.367700643578311, 	0.000000000000000, 	1.491687997515293, 	0.000000000000000, 	
+-1.962381126288365, 	0.000000000000000, 	-0.700829196527045, 	0.000000000000000, 	3.028958963615630, 	0.000000000000000, 	-2.313461067462598, 	0.000000000000000, 	
+-1.431933239886712, 	0.000000000000000, 	-0.831153039725342, 	0.000000000000000, 	3.939495598250743, 	0.000000000000000, 	0.342974753984771, 	0.000000000000000, 	
+-2.768330763002974, 	0.000000000000000, 	-2.744010370019008, 	0.000000000000000, 	3.821352685212561, 	0.000000000000000, 	4.551065271455856, 	0.000000000000000, 	
+3.270136437041298, 	0.000000000000000, 	-3.188028411950982, 	0.000000000000000, 	-0.777075012417436, 	0.000000000000000, 	0.097110650265216, 	0.000000000000000, 	
+1.221216137608812, 	0.000000000000000, 	-1.325824244541822, 	0.000000000000000, 	-2.655296734084113, 	0.000000000000000, 	-1.074792144885704, 	0.000000000000000, 	
+2.770401584439407, 	0.000000000000000, 	5.240270645610543, 	0.000000000000000, 	0.108576672208892, 	0.000000000000000, 	-1.209394350650142, 	0.000000000000000, 	
+1.403344353838785, 	0.000000000000000, 	-0.299032904177277, 	0.000000000000000, 	4.074959450638227, 	0.000000000000000, 	1.718727473952107, 	0.000000000000000, 	
+-3.061349227080806, 	0.000000000000000, 	-1.158596888541269, 	0.000000000000000, 	3.381858904662625, 	0.000000000000000, 	0.957339964054052, 	0.000000000000000, 	
+0.179900074904899, 	0.000000000000000, 	-3.909641902506081, 	0.000000000000000, 	0.805717289408649, 	0.000000000000000, 	2.047413793928261, 	0.000000000000000, 	
+-1.273580225826614, 	0.000000000000000, 	-2.681359186869971, 	0.000000000000000, 	-0.721241345822093, 	0.000000000000000, 	-1.613090681569475, 	0.000000000000000, 	
+0.463138804815955, 	0.000000000000000, 	0.377223507800954, 	0.000000000000000, 	2.046550684968141, 	0.000000000000000, 	0.178508732797712, 	0.000000000000000, 	
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