Team Riedel - display

Dependencies:   LCD_fonts SPI_TFT_ILI9341 CMSIS_DSP_401_without_cm4 mbed-src SDFileSystem wavfile

Files at this revision

API Documentation at this revision

Comitter:
EricLew
Date:
Sun Dec 13 16:46:14 2015 +0000
Parent:
8:057ff6060e39
Child:
10:0986108f8aa3
Commit message:
Added DFSDM core functionality

Changed in this revision

CMSIS_DSP_401.lib Show annotated file Show diff for this revision Revisions of this file
arm_cfft_f32.c Show annotated file Show diff for this revision Revisions of this file
audio_if.cpp Show annotated file Show diff for this revision Revisions of this file
audio_if.h Show annotated file Show diff for this revision Revisions of this file
audio_record.cpp Show annotated file Show diff for this revision Revisions of this file
core_cm4.h Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
main.h Show annotated file Show diff for this revision Revisions of this file
stm32l476g_discovery_audio.cpp Show annotated file Show diff for this revision Revisions of this file
stm32l476g_discovery_audio.h Show annotated file Show diff for this revision Revisions of this file
stm32l4xx_it.cpp Show annotated file Show diff for this revision Revisions of this file
stm32l4xx_it.h Show annotated file Show diff for this revision Revisions of this file
wavfile.lib Show annotated file Show diff for this revision Revisions of this file
--- a/CMSIS_DSP_401.lib	Sun Dec 13 16:11:44 2015 +0000
+++ b/CMSIS_DSP_401.lib	Sun Dec 13 16:46:14 2015 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/emh203/code/CMSIS_DSP_401/#3d9c67d97d6f
+https://developer.mbed.org/teams/Senior-Design-Sound-Monitor/code/CMSIS_DSP_401_without_cm4/#a06783259b88
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/arm_cfft_f32.c	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,632 @@
+/* ----------------------------------------------------------------------    
+* Copyright (C) 2010-2014 ARM Limited. All rights reserved.    
+*    
+* $Date:        19. March 2015 
+* $Revision:    V.1.4.5  
+*    
+* Project:      CMSIS DSP Library    
+* Title:        arm_cfft_f32.c   
+*    
+* Description:  Combined Radix Decimation in Frequency CFFT Floating point processing function
+*    
+* 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"
+#include "arm_common_tables.h"
+
+extern void arm_radix8_butterfly_f32(
+    float32_t * pSrc,
+    uint16_t fftLen,
+    const float32_t * pCoef,
+    uint16_t twidCoefModifier);
+
+extern void arm_bitreversal_32(
+    uint32_t * pSrc,
+    const uint16_t bitRevLen,
+    const uint16_t * pBitRevTable);
+
+/**   
+* @ingroup groupTransforms   
+*/
+
+/**   
+* @defgroup ComplexFFT Complex FFT Functions   
+*   
+* \par
+* The Fast Fourier Transform (FFT) is an efficient algorithm for computing the
+* Discrete Fourier Transform (DFT).  The FFT can be orders of magnitude faster
+* than the DFT, especially for long lengths.
+* The algorithms described in this section
+* operate on complex data.  A separate set of functions is devoted to handling
+* of real sequences.
+* \par
+* There are separate algorithms for handling floating-point, Q15, and Q31 data
+* types.  The algorithms available for each data type are described next.
+* \par
+* The FFT functions operate in-place.  That is, the array holding the input data
+* will also be used to hold the corresponding result.  The input data is complex
+* and contains <code>2*fftLen</code> interleaved values as shown below.
+* <pre> {real[0], imag[0], real[1], imag[1],..} </pre>
+* The FFT result will be contained in the same array and the frequency domain
+* values will have the same interleaving.
+*
+* \par Floating-point
+* The floating-point complex FFT uses a mixed-radix algorithm.  Multiple radix-8
+* stages are performed along with a single radix-2 or radix-4 stage, as needed.
+* The algorithm supports lengths of [16, 32, 64, ..., 4096] and each length uses
+* a different twiddle factor table.  
+* \par
+* The function uses the standard FFT definition and output values may grow by a
+* factor of <code>fftLen</code> when computing the forward transform.  The
+* inverse transform includes a scale of <code>1/fftLen</code> as part of the
+* calculation and this matches the textbook definition of the inverse FFT.
+* \par
+* Pre-initialized data structures containing twiddle factors and bit reversal
+* tables are provided and defined in <code>arm_const_structs.h</code>.  Include 
+* this header in your function and then pass one of the constant structures as 
+* an argument to arm_cfft_f32.  For example:
+* \par
+* <code>arm_cfft_f32(arm_cfft_sR_f32_len64, pSrc, 1, 1)</code>
+* \par
+* computes a 64-point inverse complex FFT including bit reversal.
+* The data structures are treated as constant data and not modified during the
+* calculation.  The same data structure can be reused for multiple transforms
+* including mixing forward and inverse transforms.
+* \par
+* Earlier releases of the library provided separate radix-2 and radix-4
+* algorithms that operated on floating-point data.  These functions are still
+* provided but are deprecated.  The older functions are slower and less general
+* than the new functions.
+* \par
+* An example of initialization of the constants for the arm_cfft_f32 function follows:
+* \code
+* const static arm_cfft_instance_f32 *S;
+* ...
+*   switch (length) {
+*     case 16:
+*       S = &arm_cfft_sR_f32_len16;
+*       break;
+*     case 32:
+*       S = &arm_cfft_sR_f32_len32;
+*       break;
+*     case 64:
+*       S = &arm_cfft_sR_f32_len64;
+*       break;
+*     case 128:
+*       S = &arm_cfft_sR_f32_len128;
+*       break;
+*     case 256:
+*       S = &arm_cfft_sR_f32_len256;
+*       break;
+*     case 512:
+*       S = &arm_cfft_sR_f32_len512;
+*       break;
+*     case 1024:
+*       S = &arm_cfft_sR_f32_len1024;
+*       break;
+*     case 2048:
+*       S = &arm_cfft_sR_f32_len2048;
+*       break;
+*     case 4096:
+*       S = &arm_cfft_sR_f32_len4096;
+*       break;
+*   }
+* \endcode
+* \par Q15 and Q31
+* The floating-point complex FFT uses a mixed-radix algorithm.  Multiple radix-4
+* stages are performed along with a single radix-2 stage, as needed.
+* The algorithm supports lengths of [16, 32, 64, ..., 4096] and each length uses
+* a different twiddle factor table.  
+* \par
+* The function uses the standard FFT definition and output values may grow by a
+* factor of <code>fftLen</code> when computing the forward transform.  The
+* inverse transform includes a scale of <code>1/fftLen</code> as part of the
+* calculation and this matches the textbook definition of the inverse FFT.
+* \par
+* Pre-initialized data structures containing twiddle factors and bit reversal
+* tables are provided and defined in <code>arm_const_structs.h</code>.  Include 
+* this header in your function and then pass one of the constant structures as 
+* an argument to arm_cfft_q31.  For example:
+* \par
+* <code>arm_cfft_q31(arm_cfft_sR_q31_len64, pSrc, 1, 1)</code>
+* \par
+* computes a 64-point inverse complex FFT including bit reversal.
+* The data structures are treated as constant data and not modified during the
+* calculation.  The same data structure can be reused for multiple transforms
+* including mixing forward and inverse transforms.
+* \par
+* Earlier releases of the library provided separate radix-2 and radix-4
+* algorithms that operated on floating-point data.  These functions are still
+* provided but are deprecated.  The older functions are slower and less general
+* than the new functions.
+* \par
+* An example of initialization of the constants for the arm_cfft_q31 function follows:
+* \code
+* const static arm_cfft_instance_q31 *S;
+* ...
+*   switch (length) {
+*     case 16:
+*       S = &arm_cfft_sR_q31_len16;
+*       break;
+*     case 32:
+*       S = &arm_cfft_sR_q31_len32;
+*       break;
+*     case 64:
+*       S = &arm_cfft_sR_q31_len64;
+*       break;
+*     case 128:
+*       S = &arm_cfft_sR_q31_len128;
+*       break;
+*     case 256:
+*       S = &arm_cfft_sR_q31_len256;
+*       break;
+*     case 512:
+*       S = &arm_cfft_sR_q31_len512;
+*       break;
+*     case 1024:
+*       S = &arm_cfft_sR_q31_len1024;
+*       break;
+*     case 2048:
+*       S = &arm_cfft_sR_q31_len2048;
+*       break;
+*     case 4096:
+*       S = &arm_cfft_sR_q31_len4096;
+*       break;
+*   }
+* \endcode
+* 
+*/
+
+void arm_cfft_radix8by2_f32( arm_cfft_instance_f32 * S, float32_t * p1) 
+{
+    uint32_t    L  = S->fftLen;
+    float32_t * pCol1, * pCol2, * pMid1, * pMid2;
+    float32_t * p2 = p1 + L;
+    const float32_t * tw = (float32_t *) S->pTwiddle;
+    float32_t t1[4], t2[4], t3[4], t4[4], twR, twI;
+    float32_t m0, m1, m2, m3;
+    uint32_t l;
+
+    pCol1 = p1;
+    pCol2 = p2;
+
+    //    Define new length
+    L >>= 1;
+    //    Initialize mid pointers
+    pMid1 = p1 + L;
+    pMid2 = p2 + L;
+
+    // do two dot Fourier transform
+    for ( l = L >> 2; l > 0; l-- ) 
+    {
+        t1[0] = p1[0];
+        t1[1] = p1[1];
+        t1[2] = p1[2];
+        t1[3] = p1[3];
+
+        t2[0] = p2[0];
+        t2[1] = p2[1];
+        t2[2] = p2[2];
+        t2[3] = p2[3];
+
+        t3[0] = pMid1[0];
+        t3[1] = pMid1[1];
+        t3[2] = pMid1[2];
+        t3[3] = pMid1[3];
+
+        t4[0] = pMid2[0];
+        t4[1] = pMid2[1];
+        t4[2] = pMid2[2];
+        t4[3] = pMid2[3];
+
+        *p1++ = t1[0] + t2[0];
+        *p1++ = t1[1] + t2[1];
+        *p1++ = t1[2] + t2[2];
+        *p1++ = t1[3] + t2[3];    // col 1
+
+        t2[0] = t1[0] - t2[0];
+        t2[1] = t1[1] - t2[1];
+        t2[2] = t1[2] - t2[2];
+        t2[3] = t1[3] - t2[3];    // for col 2
+
+        *pMid1++ = t3[0] + t4[0];
+        *pMid1++ = t3[1] + t4[1];
+        *pMid1++ = t3[2] + t4[2];
+        *pMid1++ = t3[3] + t4[3]; // col 1
+
+        t4[0] = t4[0] - t3[0];
+        t4[1] = t4[1] - t3[1];
+        t4[2] = t4[2] - t3[2];
+        t4[3] = t4[3] - t3[3];    // for col 2
+
+        twR = *tw++;
+        twI = *tw++;
+
+        // multiply by twiddle factors
+        m0 = t2[0] * twR;
+        m1 = t2[1] * twI;
+        m2 = t2[1] * twR;
+        m3 = t2[0] * twI;
+        
+        // R  =  R  *  Tr - I * Ti
+        *p2++ = m0 + m1;
+        // I  =  I  *  Tr + R * Ti
+        *p2++ = m2 - m3;
+        
+        // use vertical symmetry
+        //  0.9988 - 0.0491i <==> -0.0491 - 0.9988i
+        m0 = t4[0] * twI;
+        m1 = t4[1] * twR;
+        m2 = t4[1] * twI;
+        m3 = t4[0] * twR;
+        
+        *pMid2++ = m0 - m1;
+        *pMid2++ = m2 + m3;
+
+        twR = *tw++;
+        twI = *tw++;
+        
+        m0 = t2[2] * twR;
+        m1 = t2[3] * twI;
+        m2 = t2[3] * twR;
+        m3 = t2[2] * twI;
+        
+        *p2++ = m0 + m1;
+        *p2++ = m2 - m3;
+        
+        m0 = t4[2] * twI;
+        m1 = t4[3] * twR;
+        m2 = t4[3] * twI;
+        m3 = t4[2] * twR;
+        
+        *pMid2++ = m0 - m1;
+        *pMid2++ = m2 + m3;
+    }
+
+    // first col
+    arm_radix8_butterfly_f32( pCol1, L, (float32_t *) S->pTwiddle, 2u);
+    // second col
+    arm_radix8_butterfly_f32( pCol2, L, (float32_t *) S->pTwiddle, 2u);
+}
+
+void arm_cfft_radix8by4_f32( arm_cfft_instance_f32 * S, float32_t * p1) 
+{
+    uint32_t    L  = S->fftLen >> 1;
+    float32_t * pCol1, *pCol2, *pCol3, *pCol4, *pEnd1, *pEnd2, *pEnd3, *pEnd4;
+    const float32_t *tw2, *tw3, *tw4;
+    float32_t * p2 = p1 + L;
+    float32_t * p3 = p2 + L;
+    float32_t * p4 = p3 + L;
+    float32_t t2[4], t3[4], t4[4], twR, twI;
+    float32_t p1ap3_0, p1sp3_0, p1ap3_1, p1sp3_1;
+    float32_t m0, m1, m2, m3;
+    uint32_t l, twMod2, twMod3, twMod4;
+
+    pCol1 = p1;         // points to real values by default
+    pCol2 = p2;
+    pCol3 = p3;
+    pCol4 = p4;
+    pEnd1 = p2 - 1;     // points to imaginary values by default
+    pEnd2 = p3 - 1;
+    pEnd3 = p4 - 1;
+    pEnd4 = pEnd3 + L;
+
+    tw2 = tw3 = tw4 = (float32_t *) S->pTwiddle;
+
+    L >>= 1;
+
+    // do four dot Fourier transform
+
+    twMod2 = 2;
+    twMod3 = 4;
+    twMod4 = 6;
+
+    // TOP
+    p1ap3_0 = p1[0] + p3[0];
+    p1sp3_0 = p1[0] - p3[0];
+    p1ap3_1 = p1[1] + p3[1];
+    p1sp3_1 = p1[1] - p3[1];
+
+    // col 2
+    t2[0] = p1sp3_0 + p2[1] - p4[1];
+    t2[1] = p1sp3_1 - p2[0] + p4[0];
+    // col 3
+    t3[0] = p1ap3_0 - p2[0] - p4[0];
+    t3[1] = p1ap3_1 - p2[1] - p4[1];
+    // col 4
+    t4[0] = p1sp3_0 - p2[1] + p4[1];
+    t4[1] = p1sp3_1 + p2[0] - p4[0];
+    // col 1
+    *p1++ = p1ap3_0 + p2[0] + p4[0];
+    *p1++ = p1ap3_1 + p2[1] + p4[1];
+
+    // Twiddle factors are ones
+    *p2++ = t2[0];
+    *p2++ = t2[1];
+    *p3++ = t3[0];
+    *p3++ = t3[1];
+    *p4++ = t4[0];
+    *p4++ = t4[1];
+
+    tw2 += twMod2;
+    tw3 += twMod3;
+    tw4 += twMod4;
+
+    for (l = (L - 2) >> 1; l > 0; l-- ) 
+    {
+        // TOP
+        p1ap3_0 = p1[0] + p3[0];
+        p1sp3_0 = p1[0] - p3[0];
+        p1ap3_1 = p1[1] + p3[1];
+        p1sp3_1 = p1[1] - p3[1];
+        // col 2
+        t2[0] = p1sp3_0 + p2[1] - p4[1];
+        t2[1] = p1sp3_1 - p2[0] + p4[0];
+        // col 3
+        t3[0] = p1ap3_0 - p2[0] - p4[0];
+        t3[1] = p1ap3_1 - p2[1] - p4[1];
+        // col 4
+        t4[0] = p1sp3_0 - p2[1] + p4[1];
+        t4[1] = p1sp3_1 + p2[0] - p4[0];
+        // col 1 - top
+        *p1++ = p1ap3_0 + p2[0] + p4[0];
+        *p1++ = p1ap3_1 + p2[1] + p4[1];
+
+        // BOTTOM
+        p1ap3_1 = pEnd1[-1] + pEnd3[-1];
+        p1sp3_1 = pEnd1[-1] - pEnd3[-1];
+        p1ap3_0 = pEnd1[0] + pEnd3[0];
+        p1sp3_0 = pEnd1[0] - pEnd3[0];
+        // col 2
+        t2[2] = pEnd2[0]  - pEnd4[0] + p1sp3_1;
+        t2[3] = pEnd1[0] - pEnd3[0] - pEnd2[-1] + pEnd4[-1];
+        // col 3
+        t3[2] = p1ap3_1 - pEnd2[-1] - pEnd4[-1];
+        t3[3] = p1ap3_0 - pEnd2[0]  - pEnd4[0];
+        // col 4
+        t4[2] = pEnd2[0]  - pEnd4[0]  - p1sp3_1;
+        t4[3] = pEnd4[-1] - pEnd2[-1] - p1sp3_0;
+        // col 1 - Bottom
+        *pEnd1-- = p1ap3_0 + pEnd2[0] + pEnd4[0];
+        *pEnd1-- = p1ap3_1 + pEnd2[-1] + pEnd4[-1];
+
+        // COL 2
+        // read twiddle factors
+        twR = *tw2++;
+        twI = *tw2++;
+        // multiply by twiddle factors
+        //  let    Z1 = a + i(b),   Z2 = c + i(d)
+        //   =>  Z1 * Z2  =  (a*c - b*d) + i(b*c + a*d)
+        
+        // Top
+        m0 = t2[0] * twR;
+        m1 = t2[1] * twI;
+        m2 = t2[1] * twR;
+        m3 = t2[0] * twI;
+        
+        *p2++ = m0 + m1;
+        *p2++ = m2 - m3;
+        // use vertical symmetry col 2
+        // 0.9997 - 0.0245i  <==>  0.0245 - 0.9997i
+        // Bottom
+        m0 = t2[3] * twI;
+        m1 = t2[2] * twR;
+        m2 = t2[2] * twI;
+        m3 = t2[3] * twR;
+        
+        *pEnd2-- = m0 - m1;
+        *pEnd2-- = m2 + m3;
+
+        // COL 3
+        twR = tw3[0];
+        twI = tw3[1];
+        tw3 += twMod3;
+        // Top
+        m0 = t3[0] * twR;
+        m1 = t3[1] * twI;
+        m2 = t3[1] * twR;
+        m3 = t3[0] * twI;
+        
+        *p3++ = m0 + m1;
+        *p3++ = m2 - m3;
+        // use vertical symmetry col 3
+        // 0.9988 - 0.0491i  <==>  -0.9988 - 0.0491i
+        // Bottom
+        m0 = -t3[3] * twR;
+        m1 = t3[2] * twI;
+        m2 = t3[2] * twR;
+        m3 = t3[3] * twI;
+        
+        *pEnd3-- = m0 - m1;
+        *pEnd3-- = m3 - m2;
+        
+        // COL 4
+        twR = tw4[0];
+        twI = tw4[1];
+        tw4 += twMod4;
+        // Top
+        m0 = t4[0] * twR;
+        m1 = t4[1] * twI;
+        m2 = t4[1] * twR;
+        m3 = t4[0] * twI;
+        
+        *p4++ = m0 + m1;
+        *p4++ = m2 - m3;
+        // use vertical symmetry col 4
+        // 0.9973 - 0.0736i  <==>  -0.0736 + 0.9973i
+        // Bottom
+        m0 = t4[3] * twI;
+        m1 = t4[2] * twR;
+        m2 = t4[2] * twI;
+        m3 = t4[3] * twR;
+        
+        *pEnd4-- = m0 - m1;
+        *pEnd4-- = m2 + m3;
+    }
+
+    //MIDDLE
+    // Twiddle factors are 
+    //  1.0000  0.7071-0.7071i  -1.0000i  -0.7071-0.7071i
+    p1ap3_0 = p1[0] + p3[0];
+    p1sp3_0 = p1[0] - p3[0];
+    p1ap3_1 = p1[1] + p3[1];
+    p1sp3_1 = p1[1] - p3[1];
+
+    // col 2
+    t2[0] = p1sp3_0 + p2[1] - p4[1];
+    t2[1] = p1sp3_1 - p2[0] + p4[0];
+    // col 3
+    t3[0] = p1ap3_0 - p2[0] - p4[0];
+    t3[1] = p1ap3_1 - p2[1] - p4[1];
+    // col 4
+    t4[0] = p1sp3_0 - p2[1] + p4[1];
+    t4[1] = p1sp3_1 + p2[0] - p4[0];
+    // col 1 - Top
+    *p1++ = p1ap3_0 + p2[0] + p4[0];
+    *p1++ = p1ap3_1 + p2[1] + p4[1];
+
+    // COL 2
+    twR = tw2[0];
+    twI = tw2[1];
+
+    m0 = t2[0] * twR;
+    m1 = t2[1] * twI;
+    m2 = t2[1] * twR;
+    m3 = t2[0] * twI;
+
+    *p2++ = m0 + m1;
+    *p2++ = m2 - m3;
+    // COL 3
+    twR = tw3[0];
+    twI = tw3[1];
+
+    m0 = t3[0] * twR;
+    m1 = t3[1] * twI;
+    m2 = t3[1] * twR;
+    m3 = t3[0] * twI;
+
+    *p3++ = m0 + m1;
+    *p3++ = m2 - m3;
+    // COL 4
+    twR = tw4[0];
+    twI = tw4[1];
+
+    m0 = t4[0] * twR;
+    m1 = t4[1] * twI;
+    m2 = t4[1] * twR;
+    m3 = t4[0] * twI;
+
+    *p4++ = m0 + m1;
+    *p4++ = m2 - m3;
+
+    // first col
+    arm_radix8_butterfly_f32( pCol1, L, (float32_t *) S->pTwiddle, 4u);
+    // second col
+    arm_radix8_butterfly_f32( pCol2, L, (float32_t *) S->pTwiddle, 4u);
+    // third col
+    arm_radix8_butterfly_f32( pCol3, L, (float32_t *) S->pTwiddle, 4u);
+    // fourth col
+    arm_radix8_butterfly_f32( pCol4, L, (float32_t *) S->pTwiddle, 4u);
+}
+
+/**
+* @addtogroup ComplexFFT   
+* @{   
+*/
+
+/**   
+* @details   
+* @brief       Processing function for the floating-point complex FFT.
+* @param[in]      *S    points to an instance of the floating-point CFFT structure.  
+* @param[in, out] *p1   points to the complex data buffer of size <code>2*fftLen</code>. Processing occurs in-place.  
+* @param[in]     ifftFlag       flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform.  
+* @param[in]     bitReverseFlag flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output.  
+* @return none.  
+*/
+
+void arm_cfft_f32( 
+    const arm_cfft_instance_f32 * S, 
+    float32_t * p1,
+    uint8_t ifftFlag,
+    uint8_t bitReverseFlag)
+{
+    uint32_t  L = S->fftLen, l;
+    float32_t invL, * pSrc;
+
+    if(ifftFlag == 1u)
+    {
+        /*  Conjugate input data  */
+        pSrc = p1 + 1;
+        for(l=0; l<L; l++) 
+        {
+            *pSrc = -*pSrc;
+            pSrc += 2;
+        }
+    }
+
+    switch (L) 
+    {
+    case 16: 
+    case 128:
+    case 1024:
+        arm_cfft_radix8by2_f32  ( (arm_cfft_instance_f32 *) S, p1);
+        break;
+    case 32:
+    case 256:
+    case 2048:
+        arm_cfft_radix8by4_f32  ( (arm_cfft_instance_f32 *) S, p1);
+        break;
+    case 64:
+    case 512:
+    case 4096:
+        arm_radix8_butterfly_f32( p1, L, (float32_t *) S->pTwiddle, 1);
+        break;
+    }  
+
+//    if( bitReverseFlag )
+//        arm_bitreversal_32((uint32_t*)p1,S->bitRevLength,S->pBitRevTable);
+
+    if(ifftFlag == 1u)
+    {
+        invL = 1.0f/(float32_t)L;
+        /*  Conjugate and scale output data */
+        pSrc = p1;
+        for(l=0; l<L; l++) 
+        {
+            *pSrc++ *=   invL ;
+            *pSrc  = -(*pSrc) * invL;
+            pSrc++;
+        }
+    }
+}
+
+/**    
+* @} end of ComplexFFT group    
+*/
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/audio_if.cpp	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,288 @@
+/**
+******************************************************************************
+* @file    /Src/audio_if.c
+* @author  Central Labs
+* @version V1.0.0
+* @date    7-May-2015
+* @brief   USB Device Audio interface file.
+******************************************************************************
+@attention
+*
+* <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+*
+* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+* You may not use this file except in compliance with the License.
+* You may obtain a copy of the License at:
+*
+*        http://www.st.com/software_license_agreement_liberty_v2
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*   1. Redistributions of source code must retain the above copyright notice,
+*      this list of conditions and the following disclaimer.
+*   2. 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.
+*   3. Neither the name of STMicroelectronics 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 HOLDER 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.
+*
+******************************************************************************
+*/
+
+/* Includes ------------------------------------------------------------------*/
+#include "audio_if.h"
+
+//uint16_t PDM_Buffer[AUDIO_CHANNELS*AUDIO_SAMPLING_FREQUENCY/1000*64/8];
+//static uint16_t PCM_Buffer[AUDIO_CHANNELS*AUDIO_SAMPLING_FREQUENCY/1000];
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+
+
+/* Private functions ---------------------------------------------------------*/
+/* This table maps the audio device class setting in 1/256 dB to a
+* linear 0-64 scaling used in pdm_filter.c. It is computed as
+* 256*20*log10(index/64). */
+//const int16_t vol_table[65] =
+//{ 0x8000, 0xDBE0, 0xE1E6, 0xE56B, 0xE7EB, 0xE9DB, 0xEB70, 0xECC7,
+//0xEDF0, 0xEEF6, 0xEFE0, 0xF0B4, 0xF176, 0xF228, 0xF2CD, 0xF366,
+//0xF3F5, 0xF47C, 0xF4FB, 0xF574, 0xF5E6, 0xF652, 0xF6BA, 0xF71C,
+//0xF778, 0xF7D6, 0xF82D, 0xF881, 0xF8D2, 0xF920, 0xF96B, 0xF9B4,
+//0xF9FB, 0xFA3F, 0xFA82, 0xFAC2, 0xFB01, 0xFB3E, 0xFB79, 0xFBB3,
+//0xFBEB, 0xFC22, 0xFC57, 0xFC8C, 0xFCBF, 0xFCF1, 0xFD22, 0xFD51,
+//0xFD80, 0xFDAE, 0xFDDB, 0xFE07, 0xFE32, 0xFE5D, 0xFE86, 0xFEAF,
+//0xFED7, 0xFF00, 0xFF25, 0xFF4B, 0xFF70, 0xFF95, 0xFFB9, 0xFFD0,
+//0x0000 };
+
+//volatile uint8_t VolumeSetting=64;
+
+/**
+* @brief  Initializes the AUDIO media low layer.
+* @param  AudioFreq: Audio frequency used to play the audio stream.
+* @param  BitRes: desired bit resolution
+* @param  ChnlNbr: number of channel to be configured
+* @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
+*/
+int8_t Audio_Init(void)
+{
+    return BSP_AUDIO_IN_Init(48000, 16, 1);
+}
+
+
+
+/**
+* @brief  Start audio recording engine
+* @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
+*/
+int8_t Audio_Record(uint16_t * recbuff)
+{
+	int8_t res = BSP_AUDIO_IN_Record(recbuff, 2048);
+//	AudioProcess(pbuf, recbuff);
+	return res;
+}
+
+/**
+* @brief  Controls AUDIO Volume.             
+* @param  vol: Volume level
+* @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
+*/
+//int8_t Audio_VolumeCtl(int16_t Volume)
+//{
+//  /* Call low layer volume setting function */
+//  int j;
+//  
+//  j = 0;
+//  /* Find the setting nearest to the desired setting */
+//  while(j<64 &&
+//        abs(Volume-vol_table[j]) > abs(Volume-vol_table[j+1])) {
+//          j++;
+//        }
+//  /* Now do the volume adjustment */
+//  VolumeSetting = (uint8_t)j; 
+//  return BSP_AUDIO_IN_SetVolume(VolumeSetting);
+//
+//  
+//}
+
+/**
+* @brief  Controls AUDIO Mute.              
+* @param  cmd: Command opcode
+* @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
+*/
+//int8_t Audio_MuteCtl(uint8_t cmd)
+//{
+//  return AUDIO_OK;
+//}
+
+
+/**
+* @brief  Stops audio acquisition
+* @param  none
+* @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
+*/
+int8_t Audio_Stop(void)
+{  
+	return BSP_AUDIO_IN_Stop();
+
+}
+
+/**
+* @brief  Pauses audio acquisition
+* @param  none
+* @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
+*/
+//
+//int8_t Audio_Pause(void)
+//{
+//  return 0;
+//}
+
+
+/**
+* @brief  Resumes audio acquisition
+* @param  none
+* @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
+*/
+//int8_t Audio_Resume(void)
+//{  
+//  return AUDIO_OK;
+//}
+
+/**
+* @brief  Manages command from usb
+* @param  None
+* @retval AUDIO_OK in case of success, AUDIO_ERROR otherwise
+*/
+//
+//int8_t Audio_CommandMgr(uint8_t cmd)
+//{
+//  return AUDIO_OK;
+//}
+//
+//void AudioProcess(uint16_t * pbuf, uint16_t * recbuff)
+//{
+//  BSP_AUDIO_IN_PDMToPCM(pbuf,recbuff);
+//  // need to copy recbuff to final output buff (in chunks)
+//}
+
+void PrintData(uint16_t * recbuff)
+{
+	for (int i=0; i < AUDIO_CHANNELS*AUDIO_SAMPLING_FREQUENCY/1000; ++i) {
+		if (!(i%10))
+			pc.printf("\r\n\t");
+		pc.printf("%d ", recbuff[i]);
+	}	
+	pc.printf("\r\n\r\n");
+}
+
+void WriteData(uint16_t * recbuff)
+{
+	   
+    //Try to mount the SD card
+	pc.printf("Mounting SD card...");
+    if (sd.mount() != 0) {
+        pc.printf("failed!\r\n");
+        return;
+    }
+    pc.printf("mounted successfully!\r\n");
+
+    // write event to log
+    FILE *fp = fopen("/sd/event_log.txt", "a");
+    if (fp != NULL) {
+		for (int i=0; i < AUDIO_CHANNELS*AUDIO_SAMPLING_FREQUENCY/1000; ++i) {
+			if (!(i%10))
+				fprintf(fp, "\r\n");
+			fprintf(fp, "%d ", recbuff[i]);
+		}	
+		fprintf(fp, "\r\n\r\n");
+        fprintf(fp, "Woohoo! I made a file!\r\n");
+        fclose(fp);
+		PrintData(recbuff);
+        pc.printf("success!\r\n");
+    } else {
+        pc.printf("failed!\r\n");
+    }
+    
+    pc.printf("creating WAV file");
+    static const char *target_filename = "/sd/rec-test.wav";
+    rec(target_filename, recbuff, 48);
+    
+    
+    sd.unmount();
+    pc.printf("sd card unmounted\r\n\r\n");
+    
+}
+
+#define WAVFILE_ERROR_PRINT(RESULT) \
+    do { \
+        WavFileResult R = RESULT; \
+        if (R != WavFileResultOK) { \
+            char wavfile_error_print_text[BUFSIZ]; \
+            wavfile_result_string(R, wavfile_error_print_text, sizeof(wavfile_error_print_text)); \
+            printf("%s (code=%d)\r\n", wavfile_error_print_text, R); \
+            return 1; \
+        } \
+    } while(0)
+
+int rec(const char *filename, uint16_t * recbuff, uint16_t size)
+{
+    WavFileResult result;
+    wavfile_info_t info;
+    wavfile_data_t data;
+
+    WAVFILE_INFO_AUDIO_FORMAT(&info)    = 1;
+    WAVFILE_INFO_NUM_CHANNELS(&info)    = 1;
+    WAVFILE_INFO_SAMPLE_RATE(&info)     = 1000;
+    WAVFILE_INFO_BYTE_RATE(&info)       = 2000;
+    WAVFILE_INFO_BLOCK_ALIGN(&info)     = 2;
+    WAVFILE_INFO_BITS_PER_SAMPLE(&info) = 16;
+
+    WAVFILE *wf = wavfile_open(filename, WavFileModeWrite, &result);
+    WAVFILE_ERROR_PRINT(result);
+    WAVFILE_ERROR_PRINT(wavfile_write_info(wf, &info));
+
+    pc.printf("[REC:%s]\r\n", filename);
+    pc.printf("\tWAVFILE_INFO_AUDIO_FORMAT(&info)    = %d\r\n", WAVFILE_INFO_AUDIO_FORMAT(&info));
+    pc.printf("\tWAVFILE_INFO_NUM_CHANNELS(&info)    = %d\r\n", WAVFILE_INFO_NUM_CHANNELS(&info));
+    pc.printf("\tWAVFILE_INFO_SAMPLE_RATE(&info)     = %d\r\n", WAVFILE_INFO_SAMPLE_RATE(&info));
+    pc.printf("\tWAVFILE_INFO_BYTE_RATE(&info)       = %d\r\n", WAVFILE_INFO_BYTE_RATE(&info));
+    pc.printf("\tWAVFILE_INFO_BLOCK_ALIGN(&info)     = %d\r\n", WAVFILE_INFO_BLOCK_ALIGN(&info));
+    pc.printf("\tWAVFILE_INFO_BITS_PER_SAMPLE(&info) = %d\r\n", WAVFILE_INFO_BITS_PER_SAMPLE(&info));
+
+//    const int interval_us =  1000000 / WAVFILE_INFO_SAMPLE_RATE(&info);
+
+	int dropout = 0;
+//    unsigned int count = 0;
+    WAVFILE_DATA_NUM_CHANNELS(&data) = 1;
+//    for (int i=0; i<size; ++i) {
+//        WAVFILE_DATA_CHANNEL_DATA(&data, 0) = 0; //buffer[rp];
+//        WAVFILE_ERROR_PRINT(wavfile_write_data(wf, &data));
+        WAVFILE_ERROR_PRINT(wavfile_write_data_bulk_uint16(wf, recbuff, AUDIO_CHANNELS, size));
+//    }
+    
+    pc.printf("\t-- Rec done. (dropout=%d) --\r\n", dropout);
+
+    WAVFILE_ERROR_PRINT(wavfile_close(wf));
+    return 0;
+}
+
+
+
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/audio_if.h	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,111 @@
+/**
+******************************************************************************
+* @file    /Inc/audio_if.h
+* @author  Central Labs
+* @version V1.0.0
+* @date    7-May-2015
+* @brief   Header for audio_if.c file.
+******************************************************************************
+@attention
+*
+* <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+*
+* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+* You may not use this file except in compliance with the License.
+* You may obtain a copy of the License at:
+*
+*        http://www.st.com/software_license_agreement_liberty_v2
+*
+* Redistribution and use in source and binary forms, with or without modification,
+* are permitted provided that the following conditions are met:
+*   1. Redistributions of source code must retain the above copyright notice,
+*      this list of conditions and the following disclaimer.
+*   2. 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.
+*   3. Neither the name of STMicroelectronics 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 HOLDER 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.
+*
+******************************************************************************
+*/ 
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __AUDIO_IF_H
+#define __AUDIO_IF_H
+
+/* Includes ------------------------------------------------------------------*/
+#include "mbed.h"
+#include "main.h"
+//#include "x_nucleo_cca02m1_audio_l4.h"
+#include "stm32l476g_discovery_audio.h"
+#include <cstdint>
+
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+
+
+extern int8_t Audio_Init(void);
+extern int8_t Audio_Record(uint16_t * recbuff);
+//extern int8_t Audio_VolumeCtl(int16_t Volume);
+//extern int8_t Audio_MuteCtl(uint8_t cmd);
+extern int8_t Audio_Stop(void);
+//extern int8_t Audio_Pause(void);
+//extern int8_t Audio_Resume(void);
+//extern int8_t Audio_CommandMgr(uint8_t cmd);
+//extern void AudioProcess(uint16_t * pbuf, uint16_t * recbuff);
+extern void PrintData(uint16_t * recbuff);
+extern void WriteData(uint16_t * recbuff);
+//void BSP_AUDIO_IN_HalfTransfer_CallBack(void);
+
+int rec(const char *filename, uint16_t * recbuff, uint16_t size);
+
+ /** 
+  * @brief Sampling Frequency enumerator  
+  */ 
+typedef enum
+{
+    SAMPLING_FREQ_16000 = 16000,
+    SAMPLING_FREQ_32000 = 32000,
+    SAMPLING_FREQ_48000 = 48000 
+      
+}OUTPUT_FREQ_TypeDef;
+
+
+#define RAM_TOTAL   0x1000
+
+#define AUDIO_CHANNELS                  1
+#define AUDIO_SAMPLING_FREQUENCY        48000
+
+#define PCM_TEMP_BUFF_SIZE  AUDIO_SAMPLING_FREQUENCY/1000*1
+
+
+#if defined(STM32L053xx) || defined(STM32F072xB)
+#if (AUDIO_CHANNELS > 2)
+#error "Acquisition of more than 2 microphone is not yet supported for STM32L0 and STM32F0"
+#elif (AUDIO_SAMPLING_FREQUENCY > 32000)
+#error "Acquisition of sampling frequencies above 32 KHz is not yet supported for STM32L0 and STM32F0"
+#elif (AUDIO_SAMPLING_FREQUENCY == 32000 && AUDIO_CHANNELS == 2)
+#error "These settings are not yet supported for STM32L0 and STM32F0"
+#endif
+#endif
+
+#endif
+ /* __AUDIO_IF_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/audio_record.cpp	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,124 @@
+
+#include "main.h"
+#include "stm32l476g_discovery_audio.h"
+
+//GLOBAL VARIABLES 
+float32_t POWER[1024];
+float32_t PHS[1024];
+float32_t PWRMSE;
+float32_t PHSMSE;
+uint32_t n;  //Generic variable for "for" loops
+float32_t CONTROLPWR[1024]; //CONTROL 0 PWR
+float32_t CONTROLPHS[1024]; //CTONROL 0 PHS
+float32_t CONTROLPWRMSE;//CONTROL PWR MSE
+float32_t CONTROLPHSMSE;//CONTROL PHS MSE
+
+                                                        
+void RECORD(void)
+{
+    uint32_t counter=0;
+    int EXIT=0; //WHILE LOOP EXIT FLAG
+//    uint16_t PDMBUFF[1536];
+    uint16_t RECORDBUFF[2048];
+    float32_t FLOATBUFF[4096];
+    const arm_cfft_instance_f32 *S=&arm_cfft_sR_f32_len2048;
+    
+    /* Initialize audio input */  
+    pc.printf("\r\n");
+    pc.printf("Initializing Audio...\r\n");                          
+    if(Audio_Init()!= AUDIO_OK)
+        {
+        pc.printf("FAILED to initialize audio...\r\n");
+        }
+    pc.printf("Initialization completed successfully.\r\n");
+  
+  /* Start the audio record */
+
+        if (Audio_Record(RECORDBUFF) != AUDIO_OK)
+            {
+                pc.printf("FAILED to begin recording...\r\n");
+            } 
+            
+//    pc.printf("DMA\tSPI\tRXNE\tBSY\tCRCERR\tOVR\r\n");
+  
+  /* PCM samples recording loop */
+  RecordBufferOffset = BUFFER_OFFSET_NONE;
+  while (RecordBufferOffset != BUFFER_OFFSET_FULL);
+  
+//  while (EXIT != SET)
+//  {
+//        if (!(counter%1000000)) pc.printf("%d\t%d\t%d\t%d\t%d\t%d\r\n", getDMAState(), getSPIState(), getSPIFlagStatus(SPI_SR_RXNE), getSPIFlagStatus(SPI_SR_BSY), getSPIFlagStatus(SPI_SR_CRCERR), getSPIFlagStatus(SPI_SR_OVR));
+//        if (counter==10000000) //Approximately 3 seconds of record time
+//        {
+//            EXIT=1;
+//        }
+//        else
+//        {
+//            counter=counter++;
+//        }
+//  }
+  /* Stop audio input */
+    Audio_Stop();
+    pc.printf("Audio recording processed successfully!\r\n");
+    //myled = 0;
+    WriteData(RECORDBUFF);
+        
+    for(n=0;n<2048;n++)
+    {
+        FLOATBUFF[n*2] = (float)RECORDBUFF[n];
+        FLOATBUFF[(n*2)+1] = 0.0;
+     }
+     arm_cfft_f32(S, FLOATBUFF, 0,0); //Output of FFT is half the record buffer size
+
+            for(n=0;n<1024;n++)
+                {PHS[n]=atan2(FLOATBUFF[(n*2)+1],FLOATBUFF[n*2]);}//Calculates control phase
+            for(n=0;n<1024;n++)
+                {
+                    POWER[n]=sqrt((FLOATBUFF[(n*2)+1]*FLOATBUFF[(n*2)+1])+(FLOATBUFF[n*2]*FLOATBUFF[n*2]));
+                    } //calculates control power
+}
+
+void MSE(void)
+{
+    float32_t compare[1024]; //BUFFER VARIABLE FOR MSE FUNCTIONS
+    //MEAN SQUARED ERROR FOR SAMPLE MAGNITUDES
+    PWRMSE=0;
+    for(n=0;n<1024;n++)
+        {compare[n]=(CONTROLPWR[n]-POWER[n])*(CONTROLPWR[n]-POWER[n]);} //Error between FFT magnitudes, stored in compare
+    for(n=0;n<1024;n++)
+        {PWRMSE=PWRMSE+compare[n];} //Takes the mean of the error, stores MSE in CONTROLMSE
+    PWRMSE=PWRMSE/1024.0f;
+    //MEAN SQUARED ERROR FOR SAMPLE PHASE
+    PHSMSE=0;
+    for(n=0;n<1024;n++)
+        {compare[n]=(CONTROLPHS[n]-PHS[n])*(CONTROLPHS[n]-PHS[n]);} //Error between FFT magnitudes, stored in compare
+    for(n=0;n<1024;n++)
+        {PHSMSE=PHSMSE+compare[n];} //Takes the mean of the error, stores MSE in CONTROLMSE
+    PHSMSE=PHSMSE/1024.0f;
+}
+
+void COMPARE(void)
+{
+    float32_t TEST[4];
+            TEST[0]=001; //LOW END OF ACCEPTED TOLERANCE RANGE
+            TEST[1]=20;  //HIGH END OF ACCEPTED TOLERANCE RANGE
+            TEST[2]=(PWRMSE/CONTROLPWRMSE); //The ratio of sample MSE and control MSE
+            TEST[3]=(PHSMSE/CONTROLPHSMSE);
+                        
+                //COMPARISON
+                    //if(SAMPLEPHASEMSE>(10*PHSCONTROLMSE))
+                        //{
+                            //SEND ERROR MESSAGE
+                            //CREATE EVENT
+                        //}
+                    if(TEST[2]>TEST[0])//MODEM FUNCTIONS
+                        {
+                            //SEND ERROR MESSAGE
+                            //CREATE EVENT
+                        }
+                    if(TEST[2] < TEST[1])
+                        {   
+                            //SEND ERROR MESSAGE
+                            //CREATE EVENT
+                        }
+}
\ No newline at end of file
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core_cm4.h	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,1859 @@
+/**************************************************************************//**
+ * @file     core_cm4.h
+ * @brief    CMSIS Cortex-M4 Core Peripheral Access Layer Header File
+ * @version  V4.10
+ * @date     18. March 2015
+ *
+ * @note
+ *
+ ******************************************************************************/
+/* Copyright (c) 2009 - 2015 ARM LIMITED
+
+   All rights reserved.
+   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 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 COPYRIGHT HOLDERS AND 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.
+   ---------------------------------------------------------------------------*/
+
+
+#if defined ( __ICCARM__ )
+ #pragma system_include  /* treat file as system include file for MISRA check */
+#endif
+
+#ifndef __CORE_CM4_H_GENERIC
+#define __CORE_CM4_H_GENERIC
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/** \page CMSIS_MISRA_Exceptions  MISRA-C:2004 Compliance Exceptions
+  CMSIS violates the following MISRA-C:2004 rules:
+
+   \li Required Rule 8.5, object/function definition in header file.<br>
+     Function definitions in header files are used to allow 'inlining'.
+
+   \li Required Rule 18.4, declaration of union type or object of union type: '{...}'.<br>
+     Unions are used for effective representation of core registers.
+
+   \li Advisory Rule 19.7, Function-like macro defined.<br>
+     Function-like macros are used to allow more efficient code.
+ */
+
+
+/*******************************************************************************
+ *                 CMSIS definitions
+ ******************************************************************************/
+/** \ingroup Cortex_M4
+  @{
+ */
+
+/*  CMSIS CM4 definitions */
+#define __CM4_CMSIS_VERSION_MAIN  (0x04)                                   /*!< [31:16] CMSIS HAL main version   */
+#define __CM4_CMSIS_VERSION_SUB   (0x00)                                   /*!< [15:0]  CMSIS HAL sub version    */
+#define __CM4_CMSIS_VERSION       ((__CM4_CMSIS_VERSION_MAIN << 16) | \
+                                    __CM4_CMSIS_VERSION_SUB          )     /*!< CMSIS HAL version number         */
+
+#define __CORTEX_M                (0x04)                                   /*!< Cortex-M Core                    */
+
+
+#if   defined ( __CC_ARM )
+  #define __ASM            __asm                                      /*!< asm keyword for ARM Compiler          */
+  #define __INLINE         __inline                                   /*!< inline keyword for ARM Compiler       */
+  #define __STATIC_INLINE  static __inline
+
+#elif defined ( __GNUC__ )
+  #define __ASM            __asm                                      /*!< asm keyword for GNU Compiler          */
+  #define __INLINE         inline                                     /*!< inline keyword for GNU Compiler       */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __ICCARM__ )
+  #define __ASM            __asm                                      /*!< asm keyword for IAR Compiler          */
+  #define __INLINE         inline                                     /*!< inline keyword for IAR Compiler. Only available in High optimization mode! */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __TMS470__ )
+  #define __ASM            __asm                                      /*!< asm keyword for TI CCS Compiler       */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __TASKING__ )
+  #define __ASM            __asm                                      /*!< asm keyword for TASKING Compiler      */
+  #define __INLINE         inline                                     /*!< inline keyword for TASKING Compiler   */
+  #define __STATIC_INLINE  static inline
+
+#elif defined ( __CSMC__ )
+  #define __packed
+  #define __ASM            _asm                                      /*!< asm keyword for COSMIC Compiler      */
+  #define __INLINE         inline                                    /*use -pc99 on compile line !< inline keyword for COSMIC Compiler   */
+  #define __STATIC_INLINE  static inline
+
+#endif
+
+/** __FPU_USED indicates whether an FPU is used or not.
+    For this, __FPU_PRESENT has to be checked prior to making use of FPU specific registers and functions.
+*/
+#if defined ( __CC_ARM )
+  #if defined __TARGET_FPU_VFP
+    #if (__FPU_PRESENT == 1)
+      #define __FPU_USED       1
+    #else
+      #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+      #define __FPU_USED       0
+    #endif
+  #else
+    #define __FPU_USED         0
+  #endif
+
+#elif defined ( __GNUC__ )
+  #if defined (__VFP_FP__) && !defined(__SOFTFP__)
+    #if (__FPU_PRESENT == 1)
+      #define __FPU_USED       1
+    #else
+      #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+      #define __FPU_USED       0
+    #endif
+  #else
+    #define __FPU_USED         0
+  #endif
+
+#elif defined ( __ICCARM__ )
+  #if defined __ARMVFP__
+    #if (__FPU_PRESENT == 1)
+      #define __FPU_USED       1
+    #else
+      #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+      #define __FPU_USED       0
+    #endif
+  #else
+    #define __FPU_USED         0
+  #endif
+
+#elif defined ( __TMS470__ )
+  #if defined __TI_VFP_SUPPORT__
+    #if (__FPU_PRESENT == 1)
+      #define __FPU_USED       1
+    #else
+      #warning "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+      #define __FPU_USED       0
+    #endif
+  #else
+    #define __FPU_USED         0
+  #endif
+
+#elif defined ( __TASKING__ )
+  #if defined __FPU_VFP__
+    #if (__FPU_PRESENT == 1)
+      #define __FPU_USED       1
+    #else
+      #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+      #define __FPU_USED       0
+    #endif
+  #else
+    #define __FPU_USED         0
+  #endif
+
+#elif defined ( __CSMC__ )		/* Cosmic */
+  #if ( __CSMC__ & 0x400)		// FPU present for parser
+    #if (__FPU_PRESENT == 1)
+      #define __FPU_USED       1
+    #else
+      #error "Compiler generates FPU instructions for a device without an FPU (check __FPU_PRESENT)"
+      #define __FPU_USED       0
+    #endif
+  #else
+    #define __FPU_USED         0
+  #endif
+#endif
+
+#include <stdint.h>                      /* standard types definitions                      */
+#include <core_cmInstr.h>                /* Core Instruction Access                         */
+#include <core_cmFunc.h>                 /* Core Function Access                            */
+#include <core_cmSimd.h>                 /* Compiler specific SIMD Intrinsics               */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_CM4_H_GENERIC */
+
+#ifndef __CMSIS_GENERIC
+
+#ifndef __CORE_CM4_H_DEPENDANT
+#define __CORE_CM4_H_DEPENDANT
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+/* check device defines and use defaults */
+#if defined __CHECK_DEVICE_DEFINES
+  #ifndef __CM4_REV
+    #define __CM4_REV               0x0000
+    #warning "__CM4_REV not defined in device header file; using default!"
+  #endif
+
+  #ifndef __FPU_PRESENT
+    #define __FPU_PRESENT             0
+    #warning "__FPU_PRESENT not defined in device header file; using default!"
+  #endif
+
+  #ifndef __MPU_PRESENT
+    #define __MPU_PRESENT             0
+    #warning "__MPU_PRESENT not defined in device header file; using default!"
+  #endif
+
+  #ifndef __NVIC_PRIO_BITS
+    #define __NVIC_PRIO_BITS          4
+    #warning "__NVIC_PRIO_BITS not defined in device header file; using default!"
+  #endif
+
+  #ifndef __Vendor_SysTickConfig
+    #define __Vendor_SysTickConfig    0
+    #warning "__Vendor_SysTickConfig not defined in device header file; using default!"
+  #endif
+#endif
+
+/* IO definitions (access restrictions to peripheral registers) */
+/**
+    \defgroup CMSIS_glob_defs CMSIS Global Defines
+
+    <strong>IO Type Qualifiers</strong> are used
+    \li to specify the access to peripheral variables.
+    \li for automatic generation of peripheral register debug information.
+*/
+#ifdef __cplusplus
+  #define   __I     volatile             /*!< Defines 'read only' permissions                 */
+#else
+  #define   __I     volatile const       /*!< Defines 'read only' permissions                 */
+#endif
+#define     __O     volatile             /*!< Defines 'write only' permissions                */
+#define     __IO    volatile             /*!< Defines 'read / write' permissions              */
+
+/*@} end of group Cortex_M4 */
+
+
+
+/*******************************************************************************
+ *                 Register Abstraction
+  Core Register contain:
+  - Core Register
+  - Core NVIC Register
+  - Core SCB Register
+  - Core SysTick Register
+  - Core Debug Register
+  - Core MPU Register
+  - Core FPU Register
+ ******************************************************************************/
+/** \defgroup CMSIS_core_register Defines and Type Definitions
+    \brief Type definitions and defines for Cortex-M processor based devices.
+*/
+
+/** \ingroup    CMSIS_core_register
+    \defgroup   CMSIS_CORE  Status and Control Registers
+    \brief  Core Register type definitions.
+  @{
+ */
+
+/** \brief  Union type to access the Application Program Status Register (APSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t _reserved0:16;              /*!< bit:  0..15  Reserved                           */
+    uint32_t GE:4;                       /*!< bit: 16..19  Greater than or Equal flags        */
+    uint32_t _reserved1:7;               /*!< bit: 20..26  Reserved                           */
+    uint32_t Q:1;                        /*!< bit:     27  Saturation condition flag          */
+    uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag       */
+    uint32_t C:1;                        /*!< bit:     29  Carry condition code flag          */
+    uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag           */
+    uint32_t N:1;                        /*!< bit:     31  Negative condition code flag       */
+  } b;                                   /*!< Structure used for bit  access                  */
+  uint32_t w;                            /*!< Type      used for word access                  */
+} APSR_Type;
+
+/* APSR Register Definitions */
+#define APSR_N_Pos                         31                                             /*!< APSR: N Position */
+#define APSR_N_Msk                         (1UL << APSR_N_Pos)                            /*!< APSR: N Mask */
+
+#define APSR_Z_Pos                         30                                             /*!< APSR: Z Position */
+#define APSR_Z_Msk                         (1UL << APSR_Z_Pos)                            /*!< APSR: Z Mask */
+
+#define APSR_C_Pos                         29                                             /*!< APSR: C Position */
+#define APSR_C_Msk                         (1UL << APSR_C_Pos)                            /*!< APSR: C Mask */
+
+#define APSR_V_Pos                         28                                             /*!< APSR: V Position */
+#define APSR_V_Msk                         (1UL << APSR_V_Pos)                            /*!< APSR: V Mask */
+
+#define APSR_Q_Pos                         27                                             /*!< APSR: Q Position */
+#define APSR_Q_Msk                         (1UL << APSR_Q_Pos)                            /*!< APSR: Q Mask */
+
+#define APSR_GE_Pos                        16                                             /*!< APSR: GE Position */
+#define APSR_GE_Msk                        (0xFUL << APSR_GE_Pos)                         /*!< APSR: GE Mask */
+
+
+/** \brief  Union type to access the Interrupt Program Status Register (IPSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number                   */
+    uint32_t _reserved0:23;              /*!< bit:  9..31  Reserved                           */
+  } b;                                   /*!< Structure used for bit  access                  */
+  uint32_t w;                            /*!< Type      used for word access                  */
+} IPSR_Type;
+
+/* IPSR Register Definitions */
+#define IPSR_ISR_Pos                        0                                             /*!< IPSR: ISR Position */
+#define IPSR_ISR_Msk                       (0x1FFUL /*<< IPSR_ISR_Pos*/)                  /*!< IPSR: ISR Mask */
+
+
+/** \brief  Union type to access the Special-Purpose Program Status Registers (xPSR).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t ISR:9;                      /*!< bit:  0.. 8  Exception number                   */
+    uint32_t _reserved0:7;               /*!< bit:  9..15  Reserved                           */
+    uint32_t GE:4;                       /*!< bit: 16..19  Greater than or Equal flags        */
+    uint32_t _reserved1:4;               /*!< bit: 20..23  Reserved                           */
+    uint32_t T:1;                        /*!< bit:     24  Thumb bit        (read 0)          */
+    uint32_t IT:2;                       /*!< bit: 25..26  saved IT state   (read 0)          */
+    uint32_t Q:1;                        /*!< bit:     27  Saturation condition flag          */
+    uint32_t V:1;                        /*!< bit:     28  Overflow condition code flag       */
+    uint32_t C:1;                        /*!< bit:     29  Carry condition code flag          */
+    uint32_t Z:1;                        /*!< bit:     30  Zero condition code flag           */
+    uint32_t N:1;                        /*!< bit:     31  Negative condition code flag       */
+  } b;                                   /*!< Structure used for bit  access                  */
+  uint32_t w;                            /*!< Type      used for word access                  */
+} xPSR_Type;
+
+/* xPSR Register Definitions */
+#define xPSR_N_Pos                         31                                             /*!< xPSR: N Position */
+#define xPSR_N_Msk                         (1UL << xPSR_N_Pos)                            /*!< xPSR: N Mask */
+
+#define xPSR_Z_Pos                         30                                             /*!< xPSR: Z Position */
+#define xPSR_Z_Msk                         (1UL << xPSR_Z_Pos)                            /*!< xPSR: Z Mask */
+
+#define xPSR_C_Pos                         29                                             /*!< xPSR: C Position */
+#define xPSR_C_Msk                         (1UL << xPSR_C_Pos)                            /*!< xPSR: C Mask */
+
+#define xPSR_V_Pos                         28                                             /*!< xPSR: V Position */
+#define xPSR_V_Msk                         (1UL << xPSR_V_Pos)                            /*!< xPSR: V Mask */
+
+#define xPSR_Q_Pos                         27                                             /*!< xPSR: Q Position */
+#define xPSR_Q_Msk                         (1UL << xPSR_Q_Pos)                            /*!< xPSR: Q Mask */
+
+#define xPSR_IT_Pos                        25                                             /*!< xPSR: IT Position */
+#define xPSR_IT_Msk                        (3UL << xPSR_IT_Pos)                           /*!< xPSR: IT Mask */
+
+#define xPSR_T_Pos                         24                                             /*!< xPSR: T Position */
+#define xPSR_T_Msk                         (1UL << xPSR_T_Pos)                            /*!< xPSR: T Mask */
+
+#define xPSR_GE_Pos                        16                                             /*!< xPSR: GE Position */
+#define xPSR_GE_Msk                        (0xFUL << xPSR_GE_Pos)                         /*!< xPSR: GE Mask */
+
+#define xPSR_ISR_Pos                        0                                             /*!< xPSR: ISR Position */
+#define xPSR_ISR_Msk                       (0x1FFUL /*<< xPSR_ISR_Pos*/)                  /*!< xPSR: ISR Mask */
+
+
+/** \brief  Union type to access the Control Registers (CONTROL).
+ */
+typedef union
+{
+  struct
+  {
+    uint32_t nPRIV:1;                    /*!< bit:      0  Execution privilege in Thread mode */
+    uint32_t SPSEL:1;                    /*!< bit:      1  Stack to be used                   */
+    uint32_t FPCA:1;                     /*!< bit:      2  FP extension active flag           */
+    uint32_t _reserved0:29;              /*!< bit:  3..31  Reserved                           */
+  } b;                                   /*!< Structure used for bit  access                  */
+  uint32_t w;                            /*!< Type      used for word access                  */
+} CONTROL_Type;
+
+/* CONTROL Register Definitions */
+#define CONTROL_FPCA_Pos                    2                                             /*!< CONTROL: FPCA Position */
+#define CONTROL_FPCA_Msk                   (1UL << CONTROL_FPCA_Pos)                      /*!< CONTROL: FPCA Mask */
+
+#define CONTROL_SPSEL_Pos                   1                                             /*!< CONTROL: SPSEL Position */
+#define CONTROL_SPSEL_Msk                  (1UL << CONTROL_SPSEL_Pos)                     /*!< CONTROL: SPSEL Mask */
+
+#define CONTROL_nPRIV_Pos                   0                                             /*!< CONTROL: nPRIV Position */
+#define CONTROL_nPRIV_Msk                  (1UL /*<< CONTROL_nPRIV_Pos*/)                 /*!< CONTROL: nPRIV Mask */
+
+/*@} end of group CMSIS_CORE */
+
+
+/** \ingroup    CMSIS_core_register
+    \defgroup   CMSIS_NVIC  Nested Vectored Interrupt Controller (NVIC)
+    \brief      Type definitions for the NVIC Registers
+  @{
+ */
+
+/** \brief  Structure type to access the Nested Vectored Interrupt Controller (NVIC).
+ */
+typedef struct
+{
+  __IO uint32_t ISER[8];                 /*!< Offset: 0x000 (R/W)  Interrupt Set Enable Register           */
+       uint32_t RESERVED0[24];
+  __IO uint32_t ICER[8];                 /*!< Offset: 0x080 (R/W)  Interrupt Clear Enable Register         */
+       uint32_t RSERVED1[24];
+  __IO uint32_t ISPR[8];                 /*!< Offset: 0x100 (R/W)  Interrupt Set Pending Register          */
+       uint32_t RESERVED2[24];
+  __IO uint32_t ICPR[8];                 /*!< Offset: 0x180 (R/W)  Interrupt Clear Pending Register        */
+       uint32_t RESERVED3[24];
+  __IO uint32_t IABR[8];                 /*!< Offset: 0x200 (R/W)  Interrupt Active bit Register           */
+       uint32_t RESERVED4[56];
+  __IO uint8_t  IP[240];                 /*!< Offset: 0x300 (R/W)  Interrupt Priority Register (8Bit wide) */
+       uint32_t RESERVED5[644];
+  __O  uint32_t STIR;                    /*!< Offset: 0xE00 ( /W)  Software Trigger Interrupt Register     */
+}  NVIC_Type;
+
+/* Software Triggered Interrupt Register Definitions */
+#define NVIC_STIR_INTID_Pos                 0                                          /*!< STIR: INTLINESNUM Position */
+#define NVIC_STIR_INTID_Msk                (0x1FFUL /*<< NVIC_STIR_INTID_Pos*/)        /*!< STIR: INTLINESNUM Mask */
+
+/*@} end of group CMSIS_NVIC */
+
+
+/** \ingroup  CMSIS_core_register
+    \defgroup CMSIS_SCB     System Control Block (SCB)
+    \brief      Type definitions for the System Control Block Registers
+  @{
+ */
+
+/** \brief  Structure type to access the System Control Block (SCB).
+ */
+typedef struct
+{
+  __I  uint32_t CPUID;                   /*!< Offset: 0x000 (R/ )  CPUID Base Register                                   */
+  __IO uint32_t ICSR;                    /*!< Offset: 0x004 (R/W)  Interrupt Control and State Register                  */
+  __IO uint32_t VTOR;                    /*!< Offset: 0x008 (R/W)  Vector Table Offset Register                          */
+  __IO uint32_t AIRCR;                   /*!< Offset: 0x00C (R/W)  Application Interrupt and Reset Control Register      */
+  __IO uint32_t SCR;                     /*!< Offset: 0x010 (R/W)  System Control Register                               */
+  __IO uint32_t CCR;                     /*!< Offset: 0x014 (R/W)  Configuration Control Register                        */
+  __IO uint8_t  SHP[12];                 /*!< Offset: 0x018 (R/W)  System Handlers Priority Registers (4-7, 8-11, 12-15) */
+  __IO uint32_t SHCSR;                   /*!< Offset: 0x024 (R/W)  System Handler Control and State Register             */
+  __IO uint32_t CFSR;                    /*!< Offset: 0x028 (R/W)  Configurable Fault Status Register                    */
+  __IO uint32_t HFSR;                    /*!< Offset: 0x02C (R/W)  HardFault Status Register                             */
+  __IO uint32_t DFSR;                    /*!< Offset: 0x030 (R/W)  Debug Fault Status Register                           */
+  __IO uint32_t MMFAR;                   /*!< Offset: 0x034 (R/W)  MemManage Fault Address Register                      */
+  __IO uint32_t BFAR;                    /*!< Offset: 0x038 (R/W)  BusFault Address Register                             */
+  __IO uint32_t AFSR;                    /*!< Offset: 0x03C (R/W)  Auxiliary Fault Status Register                       */
+  __I  uint32_t PFR[2];                  /*!< Offset: 0x040 (R/ )  Processor Feature Register                            */
+  __I  uint32_t DFR;                     /*!< Offset: 0x048 (R/ )  Debug Feature Register                                */
+  __I  uint32_t ADR;                     /*!< Offset: 0x04C (R/ )  Auxiliary Feature Register                            */
+  __I  uint32_t MMFR[4];                 /*!< Offset: 0x050 (R/ )  Memory Model Feature Register                         */
+  __I  uint32_t ISAR[5];                 /*!< Offset: 0x060 (R/ )  Instruction Set Attributes Register                   */
+       uint32_t RESERVED0[5];
+  __IO uint32_t CPACR;                   /*!< Offset: 0x088 (R/W)  Coprocessor Access Control Register                   */
+} SCB_Type;
+
+/* SCB CPUID Register Definitions */
+#define SCB_CPUID_IMPLEMENTER_Pos          24                                             /*!< SCB CPUID: IMPLEMENTER Position */
+#define SCB_CPUID_IMPLEMENTER_Msk          (0xFFUL << SCB_CPUID_IMPLEMENTER_Pos)          /*!< SCB CPUID: IMPLEMENTER Mask */
+
+#define SCB_CPUID_VARIANT_Pos              20                                             /*!< SCB CPUID: VARIANT Position */
+#define SCB_CPUID_VARIANT_Msk              (0xFUL << SCB_CPUID_VARIANT_Pos)               /*!< SCB CPUID: VARIANT Mask */
+
+#define SCB_CPUID_ARCHITECTURE_Pos         16                                             /*!< SCB CPUID: ARCHITECTURE Position */
+#define SCB_CPUID_ARCHITECTURE_Msk         (0xFUL << SCB_CPUID_ARCHITECTURE_Pos)          /*!< SCB CPUID: ARCHITECTURE Mask */
+
+#define SCB_CPUID_PARTNO_Pos                4                                             /*!< SCB CPUID: PARTNO Position */
+#define SCB_CPUID_PARTNO_Msk               (0xFFFUL << SCB_CPUID_PARTNO_Pos)              /*!< SCB CPUID: PARTNO Mask */
+
+#define SCB_CPUID_REVISION_Pos              0                                             /*!< SCB CPUID: REVISION Position */
+#define SCB_CPUID_REVISION_Msk             (0xFUL /*<< SCB_CPUID_REVISION_Pos*/)          /*!< SCB CPUID: REVISION Mask */
+
+/* SCB Interrupt Control State Register Definitions */
+#define SCB_ICSR_NMIPENDSET_Pos            31                                             /*!< SCB ICSR: NMIPENDSET Position */
+#define SCB_ICSR_NMIPENDSET_Msk            (1UL << SCB_ICSR_NMIPENDSET_Pos)               /*!< SCB ICSR: NMIPENDSET Mask */
+
+#define SCB_ICSR_PENDSVSET_Pos             28                                             /*!< SCB ICSR: PENDSVSET Position */
+#define SCB_ICSR_PENDSVSET_Msk             (1UL << SCB_ICSR_PENDSVSET_Pos)                /*!< SCB ICSR: PENDSVSET Mask */
+
+#define SCB_ICSR_PENDSVCLR_Pos             27                                             /*!< SCB ICSR: PENDSVCLR Position */
+#define SCB_ICSR_PENDSVCLR_Msk             (1UL << SCB_ICSR_PENDSVCLR_Pos)                /*!< SCB ICSR: PENDSVCLR Mask */
+
+#define SCB_ICSR_PENDSTSET_Pos             26                                             /*!< SCB ICSR: PENDSTSET Position */
+#define SCB_ICSR_PENDSTSET_Msk             (1UL << SCB_ICSR_PENDSTSET_Pos)                /*!< SCB ICSR: PENDSTSET Mask */
+
+#define SCB_ICSR_PENDSTCLR_Pos             25                                             /*!< SCB ICSR: PENDSTCLR Position */
+#define SCB_ICSR_PENDSTCLR_Msk             (1UL << SCB_ICSR_PENDSTCLR_Pos)                /*!< SCB ICSR: PENDSTCLR Mask */
+
+#define SCB_ICSR_ISRPREEMPT_Pos            23                                             /*!< SCB ICSR: ISRPREEMPT Position */
+#define SCB_ICSR_ISRPREEMPT_Msk            (1UL << SCB_ICSR_ISRPREEMPT_Pos)               /*!< SCB ICSR: ISRPREEMPT Mask */
+
+#define SCB_ICSR_ISRPENDING_Pos            22                                             /*!< SCB ICSR: ISRPENDING Position */
+#define SCB_ICSR_ISRPENDING_Msk            (1UL << SCB_ICSR_ISRPENDING_Pos)               /*!< SCB ICSR: ISRPENDING Mask */
+
+#define SCB_ICSR_VECTPENDING_Pos           12                                             /*!< SCB ICSR: VECTPENDING Position */
+#define SCB_ICSR_VECTPENDING_Msk           (0x1FFUL << SCB_ICSR_VECTPENDING_Pos)          /*!< SCB ICSR: VECTPENDING Mask */
+
+#define SCB_ICSR_RETTOBASE_Pos             11                                             /*!< SCB ICSR: RETTOBASE Position */
+#define SCB_ICSR_RETTOBASE_Msk             (1UL << SCB_ICSR_RETTOBASE_Pos)                /*!< SCB ICSR: RETTOBASE Mask */
+
+#define SCB_ICSR_VECTACTIVE_Pos             0                                             /*!< SCB ICSR: VECTACTIVE Position */
+#define SCB_ICSR_VECTACTIVE_Msk            (0x1FFUL /*<< SCB_ICSR_VECTACTIVE_Pos*/)       /*!< SCB ICSR: VECTACTIVE Mask */
+
+/* SCB Vector Table Offset Register Definitions */
+#define SCB_VTOR_TBLOFF_Pos                 7                                             /*!< SCB VTOR: TBLOFF Position */
+#define SCB_VTOR_TBLOFF_Msk                (0x1FFFFFFUL << SCB_VTOR_TBLOFF_Pos)           /*!< SCB VTOR: TBLOFF Mask */
+
+/* SCB Application Interrupt and Reset Control Register Definitions */
+#define SCB_AIRCR_VECTKEY_Pos              16                                             /*!< SCB AIRCR: VECTKEY Position */
+#define SCB_AIRCR_VECTKEY_Msk              (0xFFFFUL << SCB_AIRCR_VECTKEY_Pos)            /*!< SCB AIRCR: VECTKEY Mask */
+
+#define SCB_AIRCR_VECTKEYSTAT_Pos          16                                             /*!< SCB AIRCR: VECTKEYSTAT Position */
+#define SCB_AIRCR_VECTKEYSTAT_Msk          (0xFFFFUL << SCB_AIRCR_VECTKEYSTAT_Pos)        /*!< SCB AIRCR: VECTKEYSTAT Mask */
+
+#define SCB_AIRCR_ENDIANESS_Pos            15                                             /*!< SCB AIRCR: ENDIANESS Position */
+#define SCB_AIRCR_ENDIANESS_Msk            (1UL << SCB_AIRCR_ENDIANESS_Pos)               /*!< SCB AIRCR: ENDIANESS Mask */
+
+#define SCB_AIRCR_PRIGROUP_Pos              8                                             /*!< SCB AIRCR: PRIGROUP Position */
+#define SCB_AIRCR_PRIGROUP_Msk             (7UL << SCB_AIRCR_PRIGROUP_Pos)                /*!< SCB AIRCR: PRIGROUP Mask */
+
+#define SCB_AIRCR_SYSRESETREQ_Pos           2                                             /*!< SCB AIRCR: SYSRESETREQ Position */
+#define SCB_AIRCR_SYSRESETREQ_Msk          (1UL << SCB_AIRCR_SYSRESETREQ_Pos)             /*!< SCB AIRCR: SYSRESETREQ Mask */
+
+#define SCB_AIRCR_VECTCLRACTIVE_Pos         1                                             /*!< SCB AIRCR: VECTCLRACTIVE Position */
+#define SCB_AIRCR_VECTCLRACTIVE_Msk        (1UL << SCB_AIRCR_VECTCLRACTIVE_Pos)           /*!< SCB AIRCR: VECTCLRACTIVE Mask */
+
+#define SCB_AIRCR_VECTRESET_Pos             0                                             /*!< SCB AIRCR: VECTRESET Position */
+#define SCB_AIRCR_VECTRESET_Msk            (1UL /*<< SCB_AIRCR_VECTRESET_Pos*/)           /*!< SCB AIRCR: VECTRESET Mask */
+
+/* SCB System Control Register Definitions */
+#define SCB_SCR_SEVONPEND_Pos               4                                             /*!< SCB SCR: SEVONPEND Position */
+#define SCB_SCR_SEVONPEND_Msk              (1UL << SCB_SCR_SEVONPEND_Pos)                 /*!< SCB SCR: SEVONPEND Mask */
+
+#define SCB_SCR_SLEEPDEEP_Pos               2                                             /*!< SCB SCR: SLEEPDEEP Position */
+#define SCB_SCR_SLEEPDEEP_Msk              (1UL << SCB_SCR_SLEEPDEEP_Pos)                 /*!< SCB SCR: SLEEPDEEP Mask */
+
+#define SCB_SCR_SLEEPONEXIT_Pos             1                                             /*!< SCB SCR: SLEEPONEXIT Position */
+#define SCB_SCR_SLEEPONEXIT_Msk            (1UL << SCB_SCR_SLEEPONEXIT_Pos)               /*!< SCB SCR: SLEEPONEXIT Mask */
+
+/* SCB Configuration Control Register Definitions */
+#define SCB_CCR_STKALIGN_Pos                9                                             /*!< SCB CCR: STKALIGN Position */
+#define SCB_CCR_STKALIGN_Msk               (1UL << SCB_CCR_STKALIGN_Pos)                  /*!< SCB CCR: STKALIGN Mask */
+
+#define SCB_CCR_BFHFNMIGN_Pos               8                                             /*!< SCB CCR: BFHFNMIGN Position */
+#define SCB_CCR_BFHFNMIGN_Msk              (1UL << SCB_CCR_BFHFNMIGN_Pos)                 /*!< SCB CCR: BFHFNMIGN Mask */
+
+#define SCB_CCR_DIV_0_TRP_Pos               4                                             /*!< SCB CCR: DIV_0_TRP Position */
+#define SCB_CCR_DIV_0_TRP_Msk              (1UL << SCB_CCR_DIV_0_TRP_Pos)                 /*!< SCB CCR: DIV_0_TRP Mask */
+
+#define SCB_CCR_UNALIGN_TRP_Pos             3                                             /*!< SCB CCR: UNALIGN_TRP Position */
+#define SCB_CCR_UNALIGN_TRP_Msk            (1UL << SCB_CCR_UNALIGN_TRP_Pos)               /*!< SCB CCR: UNALIGN_TRP Mask */
+
+#define SCB_CCR_USERSETMPEND_Pos            1                                             /*!< SCB CCR: USERSETMPEND Position */
+#define SCB_CCR_USERSETMPEND_Msk           (1UL << SCB_CCR_USERSETMPEND_Pos)              /*!< SCB CCR: USERSETMPEND Mask */
+
+#define SCB_CCR_NONBASETHRDENA_Pos          0                                             /*!< SCB CCR: NONBASETHRDENA Position */
+#define SCB_CCR_NONBASETHRDENA_Msk         (1UL /*<< SCB_CCR_NONBASETHRDENA_Pos*/)        /*!< SCB CCR: NONBASETHRDENA Mask */
+
+/* SCB System Handler Control and State Register Definitions */
+#define SCB_SHCSR_USGFAULTENA_Pos          18                                             /*!< SCB SHCSR: USGFAULTENA Position */
+#define SCB_SHCSR_USGFAULTENA_Msk          (1UL << SCB_SHCSR_USGFAULTENA_Pos)             /*!< SCB SHCSR: USGFAULTENA Mask */
+
+#define SCB_SHCSR_BUSFAULTENA_Pos          17                                             /*!< SCB SHCSR: BUSFAULTENA Position */
+#define SCB_SHCSR_BUSFAULTENA_Msk          (1UL << SCB_SHCSR_BUSFAULTENA_Pos)             /*!< SCB SHCSR: BUSFAULTENA Mask */
+
+#define SCB_SHCSR_MEMFAULTENA_Pos          16                                             /*!< SCB SHCSR: MEMFAULTENA Position */
+#define SCB_SHCSR_MEMFAULTENA_Msk          (1UL << SCB_SHCSR_MEMFAULTENA_Pos)             /*!< SCB SHCSR: MEMFAULTENA Mask */
+
+#define SCB_SHCSR_SVCALLPENDED_Pos         15                                             /*!< SCB SHCSR: SVCALLPENDED Position */
+#define SCB_SHCSR_SVCALLPENDED_Msk         (1UL << SCB_SHCSR_SVCALLPENDED_Pos)            /*!< SCB SHCSR: SVCALLPENDED Mask */
+
+#define SCB_SHCSR_BUSFAULTPENDED_Pos       14                                             /*!< SCB SHCSR: BUSFAULTPENDED Position */
+#define SCB_SHCSR_BUSFAULTPENDED_Msk       (1UL << SCB_SHCSR_BUSFAULTPENDED_Pos)          /*!< SCB SHCSR: BUSFAULTPENDED Mask */
+
+#define SCB_SHCSR_MEMFAULTPENDED_Pos       13                                             /*!< SCB SHCSR: MEMFAULTPENDED Position */
+#define SCB_SHCSR_MEMFAULTPENDED_Msk       (1UL << SCB_SHCSR_MEMFAULTPENDED_Pos)          /*!< SCB SHCSR: MEMFAULTPENDED Mask */
+
+#define SCB_SHCSR_USGFAULTPENDED_Pos       12                                             /*!< SCB SHCSR: USGFAULTPENDED Position */
+#define SCB_SHCSR_USGFAULTPENDED_Msk       (1UL << SCB_SHCSR_USGFAULTPENDED_Pos)          /*!< SCB SHCSR: USGFAULTPENDED Mask */
+
+#define SCB_SHCSR_SYSTICKACT_Pos           11                                             /*!< SCB SHCSR: SYSTICKACT Position */
+#define SCB_SHCSR_SYSTICKACT_Msk           (1UL << SCB_SHCSR_SYSTICKACT_Pos)              /*!< SCB SHCSR: SYSTICKACT Mask */
+
+#define SCB_SHCSR_PENDSVACT_Pos            10                                             /*!< SCB SHCSR: PENDSVACT Position */
+#define SCB_SHCSR_PENDSVACT_Msk            (1UL << SCB_SHCSR_PENDSVACT_Pos)               /*!< SCB SHCSR: PENDSVACT Mask */
+
+#define SCB_SHCSR_MONITORACT_Pos            8                                             /*!< SCB SHCSR: MONITORACT Position */
+#define SCB_SHCSR_MONITORACT_Msk           (1UL << SCB_SHCSR_MONITORACT_Pos)              /*!< SCB SHCSR: MONITORACT Mask */
+
+#define SCB_SHCSR_SVCALLACT_Pos             7                                             /*!< SCB SHCSR: SVCALLACT Position */
+#define SCB_SHCSR_SVCALLACT_Msk            (1UL << SCB_SHCSR_SVCALLACT_Pos)               /*!< SCB SHCSR: SVCALLACT Mask */
+
+#define SCB_SHCSR_USGFAULTACT_Pos           3                                             /*!< SCB SHCSR: USGFAULTACT Position */
+#define SCB_SHCSR_USGFAULTACT_Msk          (1UL << SCB_SHCSR_USGFAULTACT_Pos)             /*!< SCB SHCSR: USGFAULTACT Mask */
+
+#define SCB_SHCSR_BUSFAULTACT_Pos           1                                             /*!< SCB SHCSR: BUSFAULTACT Position */
+#define SCB_SHCSR_BUSFAULTACT_Msk          (1UL << SCB_SHCSR_BUSFAULTACT_Pos)             /*!< SCB SHCSR: BUSFAULTACT Mask */
+
+#define SCB_SHCSR_MEMFAULTACT_Pos           0                                             /*!< SCB SHCSR: MEMFAULTACT Position */
+#define SCB_SHCSR_MEMFAULTACT_Msk          (1UL /*<< SCB_SHCSR_MEMFAULTACT_Pos*/)         /*!< SCB SHCSR: MEMFAULTACT Mask */
+
+/* SCB Configurable Fault Status Registers Definitions */
+#define SCB_CFSR_USGFAULTSR_Pos            16                                             /*!< SCB CFSR: Usage Fault Status Register Position */
+#define SCB_CFSR_USGFAULTSR_Msk            (0xFFFFUL << SCB_CFSR_USGFAULTSR_Pos)          /*!< SCB CFSR: Usage Fault Status Register Mask */
+
+#define SCB_CFSR_BUSFAULTSR_Pos             8                                             /*!< SCB CFSR: Bus Fault Status Register Position */
+#define SCB_CFSR_BUSFAULTSR_Msk            (0xFFUL << SCB_CFSR_BUSFAULTSR_Pos)            /*!< SCB CFSR: Bus Fault Status Register Mask */
+
+#define SCB_CFSR_MEMFAULTSR_Pos             0                                             /*!< SCB CFSR: Memory Manage Fault Status Register Position */
+#define SCB_CFSR_MEMFAULTSR_Msk            (0xFFUL /*<< SCB_CFSR_MEMFAULTSR_Pos*/)        /*!< SCB CFSR: Memory Manage Fault Status Register Mask */
+
+/* SCB Hard Fault Status Registers Definitions */
+#define SCB_HFSR_DEBUGEVT_Pos              31                                             /*!< SCB HFSR: DEBUGEVT Position */
+#define SCB_HFSR_DEBUGEVT_Msk              (1UL << SCB_HFSR_DEBUGEVT_Pos)                 /*!< SCB HFSR: DEBUGEVT Mask */
+
+#define SCB_HFSR_FORCED_Pos                30                                             /*!< SCB HFSR: FORCED Position */
+#define SCB_HFSR_FORCED_Msk                (1UL << SCB_HFSR_FORCED_Pos)                   /*!< SCB HFSR: FORCED Mask */
+
+#define SCB_HFSR_VECTTBL_Pos                1                                             /*!< SCB HFSR: VECTTBL Position */
+#define SCB_HFSR_VECTTBL_Msk               (1UL << SCB_HFSR_VECTTBL_Pos)                  /*!< SCB HFSR: VECTTBL Mask */
+
+/* SCB Debug Fault Status Register Definitions */
+#define SCB_DFSR_EXTERNAL_Pos               4                                             /*!< SCB DFSR: EXTERNAL Position */
+#define SCB_DFSR_EXTERNAL_Msk              (1UL << SCB_DFSR_EXTERNAL_Pos)                 /*!< SCB DFSR: EXTERNAL Mask */
+
+#define SCB_DFSR_VCATCH_Pos                 3                                             /*!< SCB DFSR: VCATCH Position */
+#define SCB_DFSR_VCATCH_Msk                (1UL << SCB_DFSR_VCATCH_Pos)                   /*!< SCB DFSR: VCATCH Mask */
+
+#define SCB_DFSR_DWTTRAP_Pos                2                                             /*!< SCB DFSR: DWTTRAP Position */
+#define SCB_DFSR_DWTTRAP_Msk               (1UL << SCB_DFSR_DWTTRAP_Pos)                  /*!< SCB DFSR: DWTTRAP Mask */
+
+#define SCB_DFSR_BKPT_Pos                   1                                             /*!< SCB DFSR: BKPT Position */
+#define SCB_DFSR_BKPT_Msk                  (1UL << SCB_DFSR_BKPT_Pos)                     /*!< SCB DFSR: BKPT Mask */
+
+#define SCB_DFSR_HALTED_Pos                 0                                             /*!< SCB DFSR: HALTED Position */
+#define SCB_DFSR_HALTED_Msk                (1UL /*<< SCB_DFSR_HALTED_Pos*/)               /*!< SCB DFSR: HALTED Mask */
+
+/*@} end of group CMSIS_SCB */
+
+
+/** \ingroup  CMSIS_core_register
+    \defgroup CMSIS_SCnSCB System Controls not in SCB (SCnSCB)
+    \brief      Type definitions for the System Control and ID Register not in the SCB
+  @{
+ */
+
+/** \brief  Structure type to access the System Control and ID Register not in the SCB.
+ */
+typedef struct
+{
+       uint32_t RESERVED0[1];
+  __I  uint32_t ICTR;                    /*!< Offset: 0x004 (R/ )  Interrupt Controller Type Register      */
+  __IO uint32_t ACTLR;                   /*!< Offset: 0x008 (R/W)  Auxiliary Control Register              */
+} SCnSCB_Type;
+
+/* Interrupt Controller Type Register Definitions */
+#define SCnSCB_ICTR_INTLINESNUM_Pos         0                                          /*!< ICTR: INTLINESNUM Position */
+#define SCnSCB_ICTR_INTLINESNUM_Msk        (0xFUL /*<< SCnSCB_ICTR_INTLINESNUM_Pos*/)  /*!< ICTR: INTLINESNUM Mask */
+
+/* Auxiliary Control Register Definitions */
+#define SCnSCB_ACTLR_DISOOFP_Pos            9                                          /*!< ACTLR: DISOOFP Position */
+#define SCnSCB_ACTLR_DISOOFP_Msk           (1UL << SCnSCB_ACTLR_DISOOFP_Pos)           /*!< ACTLR: DISOOFP Mask */
+
+#define SCnSCB_ACTLR_DISFPCA_Pos            8                                          /*!< ACTLR: DISFPCA Position */
+#define SCnSCB_ACTLR_DISFPCA_Msk           (1UL << SCnSCB_ACTLR_DISFPCA_Pos)           /*!< ACTLR: DISFPCA Mask */
+
+#define SCnSCB_ACTLR_DISFOLD_Pos            2                                          /*!< ACTLR: DISFOLD Position */
+#define SCnSCB_ACTLR_DISFOLD_Msk           (1UL << SCnSCB_ACTLR_DISFOLD_Pos)           /*!< ACTLR: DISFOLD Mask */
+
+#define SCnSCB_ACTLR_DISDEFWBUF_Pos         1                                          /*!< ACTLR: DISDEFWBUF Position */
+#define SCnSCB_ACTLR_DISDEFWBUF_Msk        (1UL << SCnSCB_ACTLR_DISDEFWBUF_Pos)        /*!< ACTLR: DISDEFWBUF Mask */
+
+#define SCnSCB_ACTLR_DISMCYCINT_Pos         0                                          /*!< ACTLR: DISMCYCINT Position */
+#define SCnSCB_ACTLR_DISMCYCINT_Msk        (1UL /*<< SCnSCB_ACTLR_DISMCYCINT_Pos*/)    /*!< ACTLR: DISMCYCINT Mask */
+
+/*@} end of group CMSIS_SCnotSCB */
+
+
+/** \ingroup  CMSIS_core_register
+    \defgroup CMSIS_SysTick     System Tick Timer (SysTick)
+    \brief      Type definitions for the System Timer Registers.
+  @{
+ */
+
+/** \brief  Structure type to access the System Timer (SysTick).
+ */
+typedef struct
+{
+  __IO uint32_t CTRL;                    /*!< Offset: 0x000 (R/W)  SysTick Control and Status Register */
+  __IO uint32_t LOAD;                    /*!< Offset: 0x004 (R/W)  SysTick Reload Value Register       */
+  __IO uint32_t VAL;                     /*!< Offset: 0x008 (R/W)  SysTick Current Value Register      */
+  __I  uint32_t CALIB;                   /*!< Offset: 0x00C (R/ )  SysTick Calibration Register        */
+} SysTick_Type;
+
+/* SysTick Control / Status Register Definitions */
+#define SysTick_CTRL_COUNTFLAG_Pos         16                                             /*!< SysTick CTRL: COUNTFLAG Position */
+#define SysTick_CTRL_COUNTFLAG_Msk         (1UL << SysTick_CTRL_COUNTFLAG_Pos)            /*!< SysTick CTRL: COUNTFLAG Mask */
+
+#define SysTick_CTRL_CLKSOURCE_Pos          2                                             /*!< SysTick CTRL: CLKSOURCE Position */
+#define SysTick_CTRL_CLKSOURCE_Msk         (1UL << SysTick_CTRL_CLKSOURCE_Pos)            /*!< SysTick CTRL: CLKSOURCE Mask */
+
+#define SysTick_CTRL_TICKINT_Pos            1                                             /*!< SysTick CTRL: TICKINT Position */
+#define SysTick_CTRL_TICKINT_Msk           (1UL << SysTick_CTRL_TICKINT_Pos)              /*!< SysTick CTRL: TICKINT Mask */
+
+#define SysTick_CTRL_ENABLE_Pos             0                                             /*!< SysTick CTRL: ENABLE Position */
+#define SysTick_CTRL_ENABLE_Msk            (1UL /*<< SysTick_CTRL_ENABLE_Pos*/)           /*!< SysTick CTRL: ENABLE Mask */
+
+/* SysTick Reload Register Definitions */
+#define SysTick_LOAD_RELOAD_Pos             0                                             /*!< SysTick LOAD: RELOAD Position */
+#define SysTick_LOAD_RELOAD_Msk            (0xFFFFFFUL /*<< SysTick_LOAD_RELOAD_Pos*/)    /*!< SysTick LOAD: RELOAD Mask */
+
+/* SysTick Current Register Definitions */
+#define SysTick_VAL_CURRENT_Pos             0                                             /*!< SysTick VAL: CURRENT Position */
+#define SysTick_VAL_CURRENT_Msk            (0xFFFFFFUL /*<< SysTick_VAL_CURRENT_Pos*/)    /*!< SysTick VAL: CURRENT Mask */
+
+/* SysTick Calibration Register Definitions */
+#define SysTick_CALIB_NOREF_Pos            31                                             /*!< SysTick CALIB: NOREF Position */
+#define SysTick_CALIB_NOREF_Msk            (1UL << SysTick_CALIB_NOREF_Pos)               /*!< SysTick CALIB: NOREF Mask */
+
+#define SysTick_CALIB_SKEW_Pos             30                                             /*!< SysTick CALIB: SKEW Position */
+#define SysTick_CALIB_SKEW_Msk             (1UL << SysTick_CALIB_SKEW_Pos)                /*!< SysTick CALIB: SKEW Mask */
+
+#define SysTick_CALIB_TENMS_Pos             0                                             /*!< SysTick CALIB: TENMS Position */
+#define SysTick_CALIB_TENMS_Msk            (0xFFFFFFUL /*<< SysTick_CALIB_TENMS_Pos*/)    /*!< SysTick CALIB: TENMS Mask */
+
+/*@} end of group CMSIS_SysTick */
+
+
+/** \ingroup  CMSIS_core_register
+    \defgroup CMSIS_ITM     Instrumentation Trace Macrocell (ITM)
+    \brief      Type definitions for the Instrumentation Trace Macrocell (ITM)
+  @{
+ */
+
+/** \brief  Structure type to access the Instrumentation Trace Macrocell Register (ITM).
+ */
+typedef struct
+{
+  __O  union
+  {
+    __O  uint8_t    u8;                  /*!< Offset: 0x000 ( /W)  ITM Stimulus Port 8-bit                   */
+    __O  uint16_t   u16;                 /*!< Offset: 0x000 ( /W)  ITM Stimulus Port 16-bit                  */
+    __O  uint32_t   u32;                 /*!< Offset: 0x000 ( /W)  ITM Stimulus Port 32-bit                  */
+  }  PORT [32];                          /*!< Offset: 0x000 ( /W)  ITM Stimulus Port Registers               */
+       uint32_t RESERVED0[864];
+  __IO uint32_t TER;                     /*!< Offset: 0xE00 (R/W)  ITM Trace Enable Register                 */
+       uint32_t RESERVED1[15];
+  __IO uint32_t TPR;                     /*!< Offset: 0xE40 (R/W)  ITM Trace Privilege Register              */
+       uint32_t RESERVED2[15];
+  __IO uint32_t TCR;                     /*!< Offset: 0xE80 (R/W)  ITM Trace Control Register                */
+       uint32_t RESERVED3[29];
+  __O  uint32_t IWR;                     /*!< Offset: 0xEF8 ( /W)  ITM Integration Write Register            */
+  __I  uint32_t IRR;                     /*!< Offset: 0xEFC (R/ )  ITM Integration Read Register             */
+  __IO uint32_t IMCR;                    /*!< Offset: 0xF00 (R/W)  ITM Integration Mode Control Register     */
+       uint32_t RESERVED4[43];
+  __O  uint32_t LAR;                     /*!< Offset: 0xFB0 ( /W)  ITM Lock Access Register                  */
+  __I  uint32_t LSR;                     /*!< Offset: 0xFB4 (R/ )  ITM Lock Status Register                  */
+       uint32_t RESERVED5[6];
+  __I  uint32_t PID4;                    /*!< Offset: 0xFD0 (R/ )  ITM Peripheral Identification Register #4 */
+  __I  uint32_t PID5;                    /*!< Offset: 0xFD4 (R/ )  ITM Peripheral Identification Register #5 */
+  __I  uint32_t PID6;                    /*!< Offset: 0xFD8 (R/ )  ITM Peripheral Identification Register #6 */
+  __I  uint32_t PID7;                    /*!< Offset: 0xFDC (R/ )  ITM Peripheral Identification Register #7 */
+  __I  uint32_t PID0;                    /*!< Offset: 0xFE0 (R/ )  ITM Peripheral Identification Register #0 */
+  __I  uint32_t PID1;                    /*!< Offset: 0xFE4 (R/ )  ITM Peripheral Identification Register #1 */
+  __I  uint32_t PID2;                    /*!< Offset: 0xFE8 (R/ )  ITM Peripheral Identification Register #2 */
+  __I  uint32_t PID3;                    /*!< Offset: 0xFEC (R/ )  ITM Peripheral Identification Register #3 */
+  __I  uint32_t CID0;                    /*!< Offset: 0xFF0 (R/ )  ITM Component  Identification Register #0 */
+  __I  uint32_t CID1;                    /*!< Offset: 0xFF4 (R/ )  ITM Component  Identification Register #1 */
+  __I  uint32_t CID2;                    /*!< Offset: 0xFF8 (R/ )  ITM Component  Identification Register #2 */
+  __I  uint32_t CID3;                    /*!< Offset: 0xFFC (R/ )  ITM Component  Identification Register #3 */
+} ITM_Type;
+
+/* ITM Trace Privilege Register Definitions */
+#define ITM_TPR_PRIVMASK_Pos                0                                             /*!< ITM TPR: PRIVMASK Position */
+#define ITM_TPR_PRIVMASK_Msk               (0xFUL /*<< ITM_TPR_PRIVMASK_Pos*/)            /*!< ITM TPR: PRIVMASK Mask */
+
+/* ITM Trace Control Register Definitions */
+#define ITM_TCR_BUSY_Pos                   23                                             /*!< ITM TCR: BUSY Position */
+#define ITM_TCR_BUSY_Msk                   (1UL << ITM_TCR_BUSY_Pos)                      /*!< ITM TCR: BUSY Mask */
+
+#define ITM_TCR_TraceBusID_Pos             16                                             /*!< ITM TCR: ATBID Position */
+#define ITM_TCR_TraceBusID_Msk             (0x7FUL << ITM_TCR_TraceBusID_Pos)             /*!< ITM TCR: ATBID Mask */
+
+#define ITM_TCR_GTSFREQ_Pos                10                                             /*!< ITM TCR: Global timestamp frequency Position */
+#define ITM_TCR_GTSFREQ_Msk                (3UL << ITM_TCR_GTSFREQ_Pos)                   /*!< ITM TCR: Global timestamp frequency Mask */
+
+#define ITM_TCR_TSPrescale_Pos              8                                             /*!< ITM TCR: TSPrescale Position */
+#define ITM_TCR_TSPrescale_Msk             (3UL << ITM_TCR_TSPrescale_Pos)                /*!< ITM TCR: TSPrescale Mask */
+
+#define ITM_TCR_SWOENA_Pos                  4                                             /*!< ITM TCR: SWOENA Position */
+#define ITM_TCR_SWOENA_Msk                 (1UL << ITM_TCR_SWOENA_Pos)                    /*!< ITM TCR: SWOENA Mask */
+
+#define ITM_TCR_DWTENA_Pos                  3                                             /*!< ITM TCR: DWTENA Position */
+#define ITM_TCR_DWTENA_Msk                 (1UL << ITM_TCR_DWTENA_Pos)                    /*!< ITM TCR: DWTENA Mask */
+
+#define ITM_TCR_SYNCENA_Pos                 2                                             /*!< ITM TCR: SYNCENA Position */
+#define ITM_TCR_SYNCENA_Msk                (1UL << ITM_TCR_SYNCENA_Pos)                   /*!< ITM TCR: SYNCENA Mask */
+
+#define ITM_TCR_TSENA_Pos                   1                                             /*!< ITM TCR: TSENA Position */
+#define ITM_TCR_TSENA_Msk                  (1UL << ITM_TCR_TSENA_Pos)                     /*!< ITM TCR: TSENA Mask */
+
+#define ITM_TCR_ITMENA_Pos                  0                                             /*!< ITM TCR: ITM Enable bit Position */
+#define ITM_TCR_ITMENA_Msk                 (1UL /*<< ITM_TCR_ITMENA_Pos*/)                /*!< ITM TCR: ITM Enable bit Mask */
+
+/* ITM Integration Write Register Definitions */
+#define ITM_IWR_ATVALIDM_Pos                0                                             /*!< ITM IWR: ATVALIDM Position */
+#define ITM_IWR_ATVALIDM_Msk               (1UL /*<< ITM_IWR_ATVALIDM_Pos*/)              /*!< ITM IWR: ATVALIDM Mask */
+
+/* ITM Integration Read Register Definitions */
+#define ITM_IRR_ATREADYM_Pos                0                                             /*!< ITM IRR: ATREADYM Position */
+#define ITM_IRR_ATREADYM_Msk               (1UL /*<< ITM_IRR_ATREADYM_Pos*/)              /*!< ITM IRR: ATREADYM Mask */
+
+/* ITM Integration Mode Control Register Definitions */
+#define ITM_IMCR_INTEGRATION_Pos            0                                             /*!< ITM IMCR: INTEGRATION Position */
+#define ITM_IMCR_INTEGRATION_Msk           (1UL /*<< ITM_IMCR_INTEGRATION_Pos*/)          /*!< ITM IMCR: INTEGRATION Mask */
+
+/* ITM Lock Status Register Definitions */
+#define ITM_LSR_ByteAcc_Pos                 2                                             /*!< ITM LSR: ByteAcc Position */
+#define ITM_LSR_ByteAcc_Msk                (1UL << ITM_LSR_ByteAcc_Pos)                   /*!< ITM LSR: ByteAcc Mask */
+
+#define ITM_LSR_Access_Pos                  1                                             /*!< ITM LSR: Access Position */
+#define ITM_LSR_Access_Msk                 (1UL << ITM_LSR_Access_Pos)                    /*!< ITM LSR: Access Mask */
+
+#define ITM_LSR_Present_Pos                 0                                             /*!< ITM LSR: Present Position */
+#define ITM_LSR_Present_Msk                (1UL /*<< ITM_LSR_Present_Pos*/)               /*!< ITM LSR: Present Mask */
+
+/*@}*/ /* end of group CMSIS_ITM */
+
+
+/** \ingroup  CMSIS_core_register
+    \defgroup CMSIS_DWT     Data Watchpoint and Trace (DWT)
+    \brief      Type definitions for the Data Watchpoint and Trace (DWT)
+  @{
+ */
+
+/** \brief  Structure type to access the Data Watchpoint and Trace Register (DWT).
+ */
+typedef struct
+{
+  __IO uint32_t CTRL;                    /*!< Offset: 0x000 (R/W)  Control Register                          */
+  __IO uint32_t CYCCNT;                  /*!< Offset: 0x004 (R/W)  Cycle Count Register                      */
+  __IO uint32_t CPICNT;                  /*!< Offset: 0x008 (R/W)  CPI Count Register                        */
+  __IO uint32_t EXCCNT;                  /*!< Offset: 0x00C (R/W)  Exception Overhead Count Register         */
+  __IO uint32_t SLEEPCNT;                /*!< Offset: 0x010 (R/W)  Sleep Count Register                      */
+  __IO uint32_t LSUCNT;                  /*!< Offset: 0x014 (R/W)  LSU Count Register                        */
+  __IO uint32_t FOLDCNT;                 /*!< Offset: 0x018 (R/W)  Folded-instruction Count Register         */
+  __I  uint32_t PCSR;                    /*!< Offset: 0x01C (R/ )  Program Counter Sample Register           */
+  __IO uint32_t COMP0;                   /*!< Offset: 0x020 (R/W)  Comparator Register 0                     */
+  __IO uint32_t MASK0;                   /*!< Offset: 0x024 (R/W)  Mask Register 0                           */
+  __IO uint32_t FUNCTION0;               /*!< Offset: 0x028 (R/W)  Function Register 0                       */
+       uint32_t RESERVED0[1];
+  __IO uint32_t COMP1;                   /*!< Offset: 0x030 (R/W)  Comparator Register 1                     */
+  __IO uint32_t MASK1;                   /*!< Offset: 0x034 (R/W)  Mask Register 1                           */
+  __IO uint32_t FUNCTION1;               /*!< Offset: 0x038 (R/W)  Function Register 1                       */
+       uint32_t RESERVED1[1];
+  __IO uint32_t COMP2;                   /*!< Offset: 0x040 (R/W)  Comparator Register 2                     */
+  __IO uint32_t MASK2;                   /*!< Offset: 0x044 (R/W)  Mask Register 2                           */
+  __IO uint32_t FUNCTION2;               /*!< Offset: 0x048 (R/W)  Function Register 2                       */
+       uint32_t RESERVED2[1];
+  __IO uint32_t COMP3;                   /*!< Offset: 0x050 (R/W)  Comparator Register 3                     */
+  __IO uint32_t MASK3;                   /*!< Offset: 0x054 (R/W)  Mask Register 3                           */
+  __IO uint32_t FUNCTION3;               /*!< Offset: 0x058 (R/W)  Function Register 3                       */
+} DWT_Type;
+
+/* DWT Control Register Definitions */
+#define DWT_CTRL_NUMCOMP_Pos               28                                          /*!< DWT CTRL: NUMCOMP Position */
+#define DWT_CTRL_NUMCOMP_Msk               (0xFUL << DWT_CTRL_NUMCOMP_Pos)             /*!< DWT CTRL: NUMCOMP Mask */
+
+#define DWT_CTRL_NOTRCPKT_Pos              27                                          /*!< DWT CTRL: NOTRCPKT Position */
+#define DWT_CTRL_NOTRCPKT_Msk              (0x1UL << DWT_CTRL_NOTRCPKT_Pos)            /*!< DWT CTRL: NOTRCPKT Mask */
+
+#define DWT_CTRL_NOEXTTRIG_Pos             26                                          /*!< DWT CTRL: NOEXTTRIG Position */
+#define DWT_CTRL_NOEXTTRIG_Msk             (0x1UL << DWT_CTRL_NOEXTTRIG_Pos)           /*!< DWT CTRL: NOEXTTRIG Mask */
+
+#define DWT_CTRL_NOCYCCNT_Pos              25                                          /*!< DWT CTRL: NOCYCCNT Position */
+#define DWT_CTRL_NOCYCCNT_Msk              (0x1UL << DWT_CTRL_NOCYCCNT_Pos)            /*!< DWT CTRL: NOCYCCNT Mask */
+
+#define DWT_CTRL_NOPRFCNT_Pos              24                                          /*!< DWT CTRL: NOPRFCNT Position */
+#define DWT_CTRL_NOPRFCNT_Msk              (0x1UL << DWT_CTRL_NOPRFCNT_Pos)            /*!< DWT CTRL: NOPRFCNT Mask */
+
+#define DWT_CTRL_CYCEVTENA_Pos             22                                          /*!< DWT CTRL: CYCEVTENA Position */
+#define DWT_CTRL_CYCEVTENA_Msk             (0x1UL << DWT_CTRL_CYCEVTENA_Pos)           /*!< DWT CTRL: CYCEVTENA Mask */
+
+#define DWT_CTRL_FOLDEVTENA_Pos            21                                          /*!< DWT CTRL: FOLDEVTENA Position */
+#define DWT_CTRL_FOLDEVTENA_Msk            (0x1UL << DWT_CTRL_FOLDEVTENA_Pos)          /*!< DWT CTRL: FOLDEVTENA Mask */
+
+#define DWT_CTRL_LSUEVTENA_Pos             20                                          /*!< DWT CTRL: LSUEVTENA Position */
+#define DWT_CTRL_LSUEVTENA_Msk             (0x1UL << DWT_CTRL_LSUEVTENA_Pos)           /*!< DWT CTRL: LSUEVTENA Mask */
+
+#define DWT_CTRL_SLEEPEVTENA_Pos           19                                          /*!< DWT CTRL: SLEEPEVTENA Position */
+#define DWT_CTRL_SLEEPEVTENA_Msk           (0x1UL << DWT_CTRL_SLEEPEVTENA_Pos)         /*!< DWT CTRL: SLEEPEVTENA Mask */
+
+#define DWT_CTRL_EXCEVTENA_Pos             18                                          /*!< DWT CTRL: EXCEVTENA Position */
+#define DWT_CTRL_EXCEVTENA_Msk             (0x1UL << DWT_CTRL_EXCEVTENA_Pos)           /*!< DWT CTRL: EXCEVTENA Mask */
+
+#define DWT_CTRL_CPIEVTENA_Pos             17                                          /*!< DWT CTRL: CPIEVTENA Position */
+#define DWT_CTRL_CPIEVTENA_Msk             (0x1UL << DWT_CTRL_CPIEVTENA_Pos)           /*!< DWT CTRL: CPIEVTENA Mask */
+
+#define DWT_CTRL_EXCTRCENA_Pos             16                                          /*!< DWT CTRL: EXCTRCENA Position */
+#define DWT_CTRL_EXCTRCENA_Msk             (0x1UL << DWT_CTRL_EXCTRCENA_Pos)           /*!< DWT CTRL: EXCTRCENA Mask */
+
+#define DWT_CTRL_PCSAMPLENA_Pos            12                                          /*!< DWT CTRL: PCSAMPLENA Position */
+#define DWT_CTRL_PCSAMPLENA_Msk            (0x1UL << DWT_CTRL_PCSAMPLENA_Pos)          /*!< DWT CTRL: PCSAMPLENA Mask */
+
+#define DWT_CTRL_SYNCTAP_Pos               10                                          /*!< DWT CTRL: SYNCTAP Position */
+#define DWT_CTRL_SYNCTAP_Msk               (0x3UL << DWT_CTRL_SYNCTAP_Pos)             /*!< DWT CTRL: SYNCTAP Mask */
+
+#define DWT_CTRL_CYCTAP_Pos                 9                                          /*!< DWT CTRL: CYCTAP Position */
+#define DWT_CTRL_CYCTAP_Msk                (0x1UL << DWT_CTRL_CYCTAP_Pos)              /*!< DWT CTRL: CYCTAP Mask */
+
+#define DWT_CTRL_POSTINIT_Pos               5                                          /*!< DWT CTRL: POSTINIT Position */
+#define DWT_CTRL_POSTINIT_Msk              (0xFUL << DWT_CTRL_POSTINIT_Pos)            /*!< DWT CTRL: POSTINIT Mask */
+
+#define DWT_CTRL_POSTPRESET_Pos             1                                          /*!< DWT CTRL: POSTPRESET Position */
+#define DWT_CTRL_POSTPRESET_Msk            (0xFUL << DWT_CTRL_POSTPRESET_Pos)          /*!< DWT CTRL: POSTPRESET Mask */
+
+#define DWT_CTRL_CYCCNTENA_Pos              0                                          /*!< DWT CTRL: CYCCNTENA Position */
+#define DWT_CTRL_CYCCNTENA_Msk             (0x1UL /*<< DWT_CTRL_CYCCNTENA_Pos*/)       /*!< DWT CTRL: CYCCNTENA Mask */
+
+/* DWT CPI Count Register Definitions */
+#define DWT_CPICNT_CPICNT_Pos               0                                          /*!< DWT CPICNT: CPICNT Position */
+#define DWT_CPICNT_CPICNT_Msk              (0xFFUL /*<< DWT_CPICNT_CPICNT_Pos*/)       /*!< DWT CPICNT: CPICNT Mask */
+
+/* DWT Exception Overhead Count Register Definitions */
+#define DWT_EXCCNT_EXCCNT_Pos               0                                          /*!< DWT EXCCNT: EXCCNT Position */
+#define DWT_EXCCNT_EXCCNT_Msk              (0xFFUL /*<< DWT_EXCCNT_EXCCNT_Pos*/)       /*!< DWT EXCCNT: EXCCNT Mask */
+
+/* DWT Sleep Count Register Definitions */
+#define DWT_SLEEPCNT_SLEEPCNT_Pos           0                                          /*!< DWT SLEEPCNT: SLEEPCNT Position */
+#define DWT_SLEEPCNT_SLEEPCNT_Msk          (0xFFUL /*<< DWT_SLEEPCNT_SLEEPCNT_Pos*/)   /*!< DWT SLEEPCNT: SLEEPCNT Mask */
+
+/* DWT LSU Count Register Definitions */
+#define DWT_LSUCNT_LSUCNT_Pos               0                                          /*!< DWT LSUCNT: LSUCNT Position */
+#define DWT_LSUCNT_LSUCNT_Msk              (0xFFUL /*<< DWT_LSUCNT_LSUCNT_Pos*/)       /*!< DWT LSUCNT: LSUCNT Mask */
+
+/* DWT Folded-instruction Count Register Definitions */
+#define DWT_FOLDCNT_FOLDCNT_Pos             0                                          /*!< DWT FOLDCNT: FOLDCNT Position */
+#define DWT_FOLDCNT_FOLDCNT_Msk            (0xFFUL /*<< DWT_FOLDCNT_FOLDCNT_Pos*/)     /*!< DWT FOLDCNT: FOLDCNT Mask */
+
+/* DWT Comparator Mask Register Definitions */
+#define DWT_MASK_MASK_Pos                   0                                          /*!< DWT MASK: MASK Position */
+#define DWT_MASK_MASK_Msk                  (0x1FUL /*<< DWT_MASK_MASK_Pos*/)           /*!< DWT MASK: MASK Mask */
+
+/* DWT Comparator Function Register Definitions */
+#define DWT_FUNCTION_MATCHED_Pos           24                                          /*!< DWT FUNCTION: MATCHED Position */
+#define DWT_FUNCTION_MATCHED_Msk           (0x1UL << DWT_FUNCTION_MATCHED_Pos)         /*!< DWT FUNCTION: MATCHED Mask */
+
+#define DWT_FUNCTION_DATAVADDR1_Pos        16                                          /*!< DWT FUNCTION: DATAVADDR1 Position */
+#define DWT_FUNCTION_DATAVADDR1_Msk        (0xFUL << DWT_FUNCTION_DATAVADDR1_Pos)      /*!< DWT FUNCTION: DATAVADDR1 Mask */
+
+#define DWT_FUNCTION_DATAVADDR0_Pos        12                                          /*!< DWT FUNCTION: DATAVADDR0 Position */
+#define DWT_FUNCTION_DATAVADDR0_Msk        (0xFUL << DWT_FUNCTION_DATAVADDR0_Pos)      /*!< DWT FUNCTION: DATAVADDR0 Mask */
+
+#define DWT_FUNCTION_DATAVSIZE_Pos         10                                          /*!< DWT FUNCTION: DATAVSIZE Position */
+#define DWT_FUNCTION_DATAVSIZE_Msk         (0x3UL << DWT_FUNCTION_DATAVSIZE_Pos)       /*!< DWT FUNCTION: DATAVSIZE Mask */
+
+#define DWT_FUNCTION_LNK1ENA_Pos            9                                          /*!< DWT FUNCTION: LNK1ENA Position */
+#define DWT_FUNCTION_LNK1ENA_Msk           (0x1UL << DWT_FUNCTION_LNK1ENA_Pos)         /*!< DWT FUNCTION: LNK1ENA Mask */
+
+#define DWT_FUNCTION_DATAVMATCH_Pos         8                                          /*!< DWT FUNCTION: DATAVMATCH Position */
+#define DWT_FUNCTION_DATAVMATCH_Msk        (0x1UL << DWT_FUNCTION_DATAVMATCH_Pos)      /*!< DWT FUNCTION: DATAVMATCH Mask */
+
+#define DWT_FUNCTION_CYCMATCH_Pos           7                                          /*!< DWT FUNCTION: CYCMATCH Position */
+#define DWT_FUNCTION_CYCMATCH_Msk          (0x1UL << DWT_FUNCTION_CYCMATCH_Pos)        /*!< DWT FUNCTION: CYCMATCH Mask */
+
+#define DWT_FUNCTION_EMITRANGE_Pos          5                                          /*!< DWT FUNCTION: EMITRANGE Position */
+#define DWT_FUNCTION_EMITRANGE_Msk         (0x1UL << DWT_FUNCTION_EMITRANGE_Pos)       /*!< DWT FUNCTION: EMITRANGE Mask */
+
+#define DWT_FUNCTION_FUNCTION_Pos           0                                          /*!< DWT FUNCTION: FUNCTION Position */
+#define DWT_FUNCTION_FUNCTION_Msk          (0xFUL /*<< DWT_FUNCTION_FUNCTION_Pos*/)    /*!< DWT FUNCTION: FUNCTION Mask */
+
+/*@}*/ /* end of group CMSIS_DWT */
+
+
+/** \ingroup  CMSIS_core_register
+    \defgroup CMSIS_TPI     Trace Port Interface (TPI)
+    \brief      Type definitions for the Trace Port Interface (TPI)
+  @{
+ */
+
+/** \brief  Structure type to access the Trace Port Interface Register (TPI).
+ */
+typedef struct
+{
+  __IO uint32_t SSPSR;                   /*!< Offset: 0x000 (R/ )  Supported Parallel Port Size Register     */
+  __IO uint32_t CSPSR;                   /*!< Offset: 0x004 (R/W)  Current Parallel Port Size Register */
+       uint32_t RESERVED0[2];
+  __IO uint32_t ACPR;                    /*!< Offset: 0x010 (R/W)  Asynchronous Clock Prescaler Register */
+       uint32_t RESERVED1[55];
+  __IO uint32_t SPPR;                    /*!< Offset: 0x0F0 (R/W)  Selected Pin Protocol Register */
+       uint32_t RESERVED2[131];
+  __I  uint32_t FFSR;                    /*!< Offset: 0x300 (R/ )  Formatter and Flush Status Register */
+  __IO uint32_t FFCR;                    /*!< Offset: 0x304 (R/W)  Formatter and Flush Control Register */
+  __I  uint32_t FSCR;                    /*!< Offset: 0x308 (R/ )  Formatter Synchronization Counter Register */
+       uint32_t RESERVED3[759];
+  __I  uint32_t TRIGGER;                 /*!< Offset: 0xEE8 (R/ )  TRIGGER */
+  __I  uint32_t FIFO0;                   /*!< Offset: 0xEEC (R/ )  Integration ETM Data */
+  __I  uint32_t ITATBCTR2;               /*!< Offset: 0xEF0 (R/ )  ITATBCTR2 */
+       uint32_t RESERVED4[1];
+  __I  uint32_t ITATBCTR0;               /*!< Offset: 0xEF8 (R/ )  ITATBCTR0 */
+  __I  uint32_t FIFO1;                   /*!< Offset: 0xEFC (R/ )  Integration ITM Data */
+  __IO uint32_t ITCTRL;                  /*!< Offset: 0xF00 (R/W)  Integration Mode Control */
+       uint32_t RESERVED5[39];
+  __IO uint32_t CLAIMSET;                /*!< Offset: 0xFA0 (R/W)  Claim tag set */
+  __IO uint32_t CLAIMCLR;                /*!< Offset: 0xFA4 (R/W)  Claim tag clear */
+       uint32_t RESERVED7[8];
+  __I  uint32_t DEVID;                   /*!< Offset: 0xFC8 (R/ )  TPIU_DEVID */
+  __I  uint32_t DEVTYPE;                 /*!< Offset: 0xFCC (R/ )  TPIU_DEVTYPE */
+} TPI_Type;
+
+/* TPI Asynchronous Clock Prescaler Register Definitions */
+#define TPI_ACPR_PRESCALER_Pos              0                                          /*!< TPI ACPR: PRESCALER Position */
+#define TPI_ACPR_PRESCALER_Msk             (0x1FFFUL /*<< TPI_ACPR_PRESCALER_Pos*/)    /*!< TPI ACPR: PRESCALER Mask */
+
+/* TPI Selected Pin Protocol Register Definitions */
+#define TPI_SPPR_TXMODE_Pos                 0                                          /*!< TPI SPPR: TXMODE Position */
+#define TPI_SPPR_TXMODE_Msk                (0x3UL /*<< TPI_SPPR_TXMODE_Pos*/)          /*!< TPI SPPR: TXMODE Mask */
+
+/* TPI Formatter and Flush Status Register Definitions */
+#define TPI_FFSR_FtNonStop_Pos              3                                          /*!< TPI FFSR: FtNonStop Position */
+#define TPI_FFSR_FtNonStop_Msk             (0x1UL << TPI_FFSR_FtNonStop_Pos)           /*!< TPI FFSR: FtNonStop Mask */
+
+#define TPI_FFSR_TCPresent_Pos              2                                          /*!< TPI FFSR: TCPresent Position */
+#define TPI_FFSR_TCPresent_Msk             (0x1UL << TPI_FFSR_TCPresent_Pos)           /*!< TPI FFSR: TCPresent Mask */
+
+#define TPI_FFSR_FtStopped_Pos              1                                          /*!< TPI FFSR: FtStopped Position */
+#define TPI_FFSR_FtStopped_Msk             (0x1UL << TPI_FFSR_FtStopped_Pos)           /*!< TPI FFSR: FtStopped Mask */
+
+#define TPI_FFSR_FlInProg_Pos               0                                          /*!< TPI FFSR: FlInProg Position */
+#define TPI_FFSR_FlInProg_Msk              (0x1UL /*<< TPI_FFSR_FlInProg_Pos*/)        /*!< TPI FFSR: FlInProg Mask */
+
+/* TPI Formatter and Flush Control Register Definitions */
+#define TPI_FFCR_TrigIn_Pos                 8                                          /*!< TPI FFCR: TrigIn Position */
+#define TPI_FFCR_TrigIn_Msk                (0x1UL << TPI_FFCR_TrigIn_Pos)              /*!< TPI FFCR: TrigIn Mask */
+
+#define TPI_FFCR_EnFCont_Pos                1                                          /*!< TPI FFCR: EnFCont Position */
+#define TPI_FFCR_EnFCont_Msk               (0x1UL << TPI_FFCR_EnFCont_Pos)             /*!< TPI FFCR: EnFCont Mask */
+
+/* TPI TRIGGER Register Definitions */
+#define TPI_TRIGGER_TRIGGER_Pos             0                                          /*!< TPI TRIGGER: TRIGGER Position */
+#define TPI_TRIGGER_TRIGGER_Msk            (0x1UL /*<< TPI_TRIGGER_TRIGGER_Pos*/)      /*!< TPI TRIGGER: TRIGGER Mask */
+
+/* TPI Integration ETM Data Register Definitions (FIFO0) */
+#define TPI_FIFO0_ITM_ATVALID_Pos          29                                          /*!< TPI FIFO0: ITM_ATVALID Position */
+#define TPI_FIFO0_ITM_ATVALID_Msk          (0x3UL << TPI_FIFO0_ITM_ATVALID_Pos)        /*!< TPI FIFO0: ITM_ATVALID Mask */
+
+#define TPI_FIFO0_ITM_bytecount_Pos        27                                          /*!< TPI FIFO0: ITM_bytecount Position */
+#define TPI_FIFO0_ITM_bytecount_Msk        (0x3UL << TPI_FIFO0_ITM_bytecount_Pos)      /*!< TPI FIFO0: ITM_bytecount Mask */
+
+#define TPI_FIFO0_ETM_ATVALID_Pos          26                                          /*!< TPI FIFO0: ETM_ATVALID Position */
+#define TPI_FIFO0_ETM_ATVALID_Msk          (0x3UL << TPI_FIFO0_ETM_ATVALID_Pos)        /*!< TPI FIFO0: ETM_ATVALID Mask */
+
+#define TPI_FIFO0_ETM_bytecount_Pos        24                                          /*!< TPI FIFO0: ETM_bytecount Position */
+#define TPI_FIFO0_ETM_bytecount_Msk        (0x3UL << TPI_FIFO0_ETM_bytecount_Pos)      /*!< TPI FIFO0: ETM_bytecount Mask */
+
+#define TPI_FIFO0_ETM2_Pos                 16                                          /*!< TPI FIFO0: ETM2 Position */
+#define TPI_FIFO0_ETM2_Msk                 (0xFFUL << TPI_FIFO0_ETM2_Pos)              /*!< TPI FIFO0: ETM2 Mask */
+
+#define TPI_FIFO0_ETM1_Pos                  8                                          /*!< TPI FIFO0: ETM1 Position */
+#define TPI_FIFO0_ETM1_Msk                 (0xFFUL << TPI_FIFO0_ETM1_Pos)              /*!< TPI FIFO0: ETM1 Mask */
+
+#define TPI_FIFO0_ETM0_Pos                  0                                          /*!< TPI FIFO0: ETM0 Position */
+#define TPI_FIFO0_ETM0_Msk                 (0xFFUL /*<< TPI_FIFO0_ETM0_Pos*/)          /*!< TPI FIFO0: ETM0 Mask */
+
+/* TPI ITATBCTR2 Register Definitions */
+#define TPI_ITATBCTR2_ATREADY_Pos           0                                          /*!< TPI ITATBCTR2: ATREADY Position */
+#define TPI_ITATBCTR2_ATREADY_Msk          (0x1UL /*<< TPI_ITATBCTR2_ATREADY_Pos*/)    /*!< TPI ITATBCTR2: ATREADY Mask */
+
+/* TPI Integration ITM Data Register Definitions (FIFO1) */
+#define TPI_FIFO1_ITM_ATVALID_Pos          29                                          /*!< TPI FIFO1: ITM_ATVALID Position */
+#define TPI_FIFO1_ITM_ATVALID_Msk          (0x3UL << TPI_FIFO1_ITM_ATVALID_Pos)        /*!< TPI FIFO1: ITM_ATVALID Mask */
+
+#define TPI_FIFO1_ITM_bytecount_Pos        27                                          /*!< TPI FIFO1: ITM_bytecount Position */
+#define TPI_FIFO1_ITM_bytecount_Msk        (0x3UL << TPI_FIFO1_ITM_bytecount_Pos)      /*!< TPI FIFO1: ITM_bytecount Mask */
+
+#define TPI_FIFO1_ETM_ATVALID_Pos          26                                          /*!< TPI FIFO1: ETM_ATVALID Position */
+#define TPI_FIFO1_ETM_ATVALID_Msk          (0x3UL << TPI_FIFO1_ETM_ATVALID_Pos)        /*!< TPI FIFO1: ETM_ATVALID Mask */
+
+#define TPI_FIFO1_ETM_bytecount_Pos        24                                          /*!< TPI FIFO1: ETM_bytecount Position */
+#define TPI_FIFO1_ETM_bytecount_Msk        (0x3UL << TPI_FIFO1_ETM_bytecount_Pos)      /*!< TPI FIFO1: ETM_bytecount Mask */
+
+#define TPI_FIFO1_ITM2_Pos                 16                                          /*!< TPI FIFO1: ITM2 Position */
+#define TPI_FIFO1_ITM2_Msk                 (0xFFUL << TPI_FIFO1_ITM2_Pos)              /*!< TPI FIFO1: ITM2 Mask */
+
+#define TPI_FIFO1_ITM1_Pos                  8                                          /*!< TPI FIFO1: ITM1 Position */
+#define TPI_FIFO1_ITM1_Msk                 (0xFFUL << TPI_FIFO1_ITM1_Pos)              /*!< TPI FIFO1: ITM1 Mask */
+
+#define TPI_FIFO1_ITM0_Pos                  0                                          /*!< TPI FIFO1: ITM0 Position */
+#define TPI_FIFO1_ITM0_Msk                 (0xFFUL /*<< TPI_FIFO1_ITM0_Pos*/)          /*!< TPI FIFO1: ITM0 Mask */
+
+/* TPI ITATBCTR0 Register Definitions */
+#define TPI_ITATBCTR0_ATREADY_Pos           0                                          /*!< TPI ITATBCTR0: ATREADY Position */
+#define TPI_ITATBCTR0_ATREADY_Msk          (0x1UL /*<< TPI_ITATBCTR0_ATREADY_Pos*/)    /*!< TPI ITATBCTR0: ATREADY Mask */
+
+/* TPI Integration Mode Control Register Definitions */
+#define TPI_ITCTRL_Mode_Pos                 0                                          /*!< TPI ITCTRL: Mode Position */
+#define TPI_ITCTRL_Mode_Msk                (0x1UL /*<< TPI_ITCTRL_Mode_Pos*/)          /*!< TPI ITCTRL: Mode Mask */
+
+/* TPI DEVID Register Definitions */
+#define TPI_DEVID_NRZVALID_Pos             11                                          /*!< TPI DEVID: NRZVALID Position */
+#define TPI_DEVID_NRZVALID_Msk             (0x1UL << TPI_DEVID_NRZVALID_Pos)           /*!< TPI DEVID: NRZVALID Mask */
+
+#define TPI_DEVID_MANCVALID_Pos            10                                          /*!< TPI DEVID: MANCVALID Position */
+#define TPI_DEVID_MANCVALID_Msk            (0x1UL << TPI_DEVID_MANCVALID_Pos)          /*!< TPI DEVID: MANCVALID Mask */
+
+#define TPI_DEVID_PTINVALID_Pos             9                                          /*!< TPI DEVID: PTINVALID Position */
+#define TPI_DEVID_PTINVALID_Msk            (0x1UL << TPI_DEVID_PTINVALID_Pos)          /*!< TPI DEVID: PTINVALID Mask */
+
+#define TPI_DEVID_MinBufSz_Pos              6                                          /*!< TPI DEVID: MinBufSz Position */
+#define TPI_DEVID_MinBufSz_Msk             (0x7UL << TPI_DEVID_MinBufSz_Pos)           /*!< TPI DEVID: MinBufSz Mask */
+
+#define TPI_DEVID_AsynClkIn_Pos             5                                          /*!< TPI DEVID: AsynClkIn Position */
+#define TPI_DEVID_AsynClkIn_Msk            (0x1UL << TPI_DEVID_AsynClkIn_Pos)          /*!< TPI DEVID: AsynClkIn Mask */
+
+#define TPI_DEVID_NrTraceInput_Pos          0                                          /*!< TPI DEVID: NrTraceInput Position */
+#define TPI_DEVID_NrTraceInput_Msk         (0x1FUL /*<< TPI_DEVID_NrTraceInput_Pos*/)  /*!< TPI DEVID: NrTraceInput Mask */
+
+/* TPI DEVTYPE Register Definitions */
+#define TPI_DEVTYPE_MajorType_Pos           4                                          /*!< TPI DEVTYPE: MajorType Position */
+#define TPI_DEVTYPE_MajorType_Msk          (0xFUL << TPI_DEVTYPE_MajorType_Pos)        /*!< TPI DEVTYPE: MajorType Mask */
+
+#define TPI_DEVTYPE_SubType_Pos             0                                          /*!< TPI DEVTYPE: SubType Position */
+#define TPI_DEVTYPE_SubType_Msk            (0xFUL /*<< TPI_DEVTYPE_SubType_Pos*/)      /*!< TPI DEVTYPE: SubType Mask */
+
+/*@}*/ /* end of group CMSIS_TPI */
+
+
+#if (__MPU_PRESENT == 1)
+/** \ingroup  CMSIS_core_register
+    \defgroup CMSIS_MPU     Memory Protection Unit (MPU)
+    \brief      Type definitions for the Memory Protection Unit (MPU)
+  @{
+ */
+
+/** \brief  Structure type to access the Memory Protection Unit (MPU).
+ */
+typedef struct
+{
+  __I  uint32_t TYPE;                    /*!< Offset: 0x000 (R/ )  MPU Type Register                              */
+  __IO uint32_t CTRL;                    /*!< Offset: 0x004 (R/W)  MPU Control Register                           */
+  __IO uint32_t RNR;                     /*!< Offset: 0x008 (R/W)  MPU Region RNRber Register                     */
+  __IO uint32_t RBAR;                    /*!< Offset: 0x00C (R/W)  MPU Region Base Address Register               */
+  __IO uint32_t RASR;                    /*!< Offset: 0x010 (R/W)  MPU Region Attribute and Size Register         */
+  __IO uint32_t RBAR_A1;                 /*!< Offset: 0x014 (R/W)  MPU Alias 1 Region Base Address Register       */
+  __IO uint32_t RASR_A1;                 /*!< Offset: 0x018 (R/W)  MPU Alias 1 Region Attribute and Size Register */
+  __IO uint32_t RBAR_A2;                 /*!< Offset: 0x01C (R/W)  MPU Alias 2 Region Base Address Register       */
+  __IO uint32_t RASR_A2;                 /*!< Offset: 0x020 (R/W)  MPU Alias 2 Region Attribute and Size Register */
+  __IO uint32_t RBAR_A3;                 /*!< Offset: 0x024 (R/W)  MPU Alias 3 Region Base Address Register       */
+  __IO uint32_t RASR_A3;                 /*!< Offset: 0x028 (R/W)  MPU Alias 3 Region Attribute and Size Register */
+} MPU_Type;
+
+/* MPU Type Register */
+#define MPU_TYPE_IREGION_Pos               16                                             /*!< MPU TYPE: IREGION Position */
+#define MPU_TYPE_IREGION_Msk               (0xFFUL << MPU_TYPE_IREGION_Pos)               /*!< MPU TYPE: IREGION Mask */
+
+#define MPU_TYPE_DREGION_Pos                8                                             /*!< MPU TYPE: DREGION Position */
+#define MPU_TYPE_DREGION_Msk               (0xFFUL << MPU_TYPE_DREGION_Pos)               /*!< MPU TYPE: DREGION Mask */
+
+#define MPU_TYPE_SEPARATE_Pos               0                                             /*!< MPU TYPE: SEPARATE Position */
+#define MPU_TYPE_SEPARATE_Msk              (1UL /*<< MPU_TYPE_SEPARATE_Pos*/)             /*!< MPU TYPE: SEPARATE Mask */
+
+/* MPU Control Register */
+#define MPU_CTRL_PRIVDEFENA_Pos             2                                             /*!< MPU CTRL: PRIVDEFENA Position */
+#define MPU_CTRL_PRIVDEFENA_Msk            (1UL << MPU_CTRL_PRIVDEFENA_Pos)               /*!< MPU CTRL: PRIVDEFENA Mask */
+
+#define MPU_CTRL_HFNMIENA_Pos               1                                             /*!< MPU CTRL: HFNMIENA Position */
+#define MPU_CTRL_HFNMIENA_Msk              (1UL << MPU_CTRL_HFNMIENA_Pos)                 /*!< MPU CTRL: HFNMIENA Mask */
+
+#define MPU_CTRL_ENABLE_Pos                 0                                             /*!< MPU CTRL: ENABLE Position */
+#define MPU_CTRL_ENABLE_Msk                (1UL /*<< MPU_CTRL_ENABLE_Pos*/)               /*!< MPU CTRL: ENABLE Mask */
+
+/* MPU Region Number Register */
+#define MPU_RNR_REGION_Pos                  0                                             /*!< MPU RNR: REGION Position */
+#define MPU_RNR_REGION_Msk                 (0xFFUL /*<< MPU_RNR_REGION_Pos*/)             /*!< MPU RNR: REGION Mask */
+
+/* MPU Region Base Address Register */
+#define MPU_RBAR_ADDR_Pos                   5                                             /*!< MPU RBAR: ADDR Position */
+#define MPU_RBAR_ADDR_Msk                  (0x7FFFFFFUL << MPU_RBAR_ADDR_Pos)             /*!< MPU RBAR: ADDR Mask */
+
+#define MPU_RBAR_VALID_Pos                  4                                             /*!< MPU RBAR: VALID Position */
+#define MPU_RBAR_VALID_Msk                 (1UL << MPU_RBAR_VALID_Pos)                    /*!< MPU RBAR: VALID Mask */
+
+#define MPU_RBAR_REGION_Pos                 0                                             /*!< MPU RBAR: REGION Position */
+#define MPU_RBAR_REGION_Msk                (0xFUL /*<< MPU_RBAR_REGION_Pos*/)             /*!< MPU RBAR: REGION Mask */
+
+/* MPU Region Attribute and Size Register */
+#define MPU_RASR_ATTRS_Pos                 16                                             /*!< MPU RASR: MPU Region Attribute field Position */
+#define MPU_RASR_ATTRS_Msk                 (0xFFFFUL << MPU_RASR_ATTRS_Pos)               /*!< MPU RASR: MPU Region Attribute field Mask */
+
+#define MPU_RASR_XN_Pos                    28                                             /*!< MPU RASR: ATTRS.XN Position */
+#define MPU_RASR_XN_Msk                    (1UL << MPU_RASR_XN_Pos)                       /*!< MPU RASR: ATTRS.XN Mask */
+
+#define MPU_RASR_AP_Pos                    24                                             /*!< MPU RASR: ATTRS.AP Position */
+#define MPU_RASR_AP_Msk                    (0x7UL << MPU_RASR_AP_Pos)                     /*!< MPU RASR: ATTRS.AP Mask */
+
+#define MPU_RASR_TEX_Pos                   19                                             /*!< MPU RASR: ATTRS.TEX Position */
+#define MPU_RASR_TEX_Msk                   (0x7UL << MPU_RASR_TEX_Pos)                    /*!< MPU RASR: ATTRS.TEX Mask */
+
+#define MPU_RASR_S_Pos                     18                                             /*!< MPU RASR: ATTRS.S Position */
+#define MPU_RASR_S_Msk                     (1UL << MPU_RASR_S_Pos)                        /*!< MPU RASR: ATTRS.S Mask */
+
+#define MPU_RASR_C_Pos                     17                                             /*!< MPU RASR: ATTRS.C Position */
+#define MPU_RASR_C_Msk                     (1UL << MPU_RASR_C_Pos)                        /*!< MPU RASR: ATTRS.C Mask */
+
+#define MPU_RASR_B_Pos                     16                                             /*!< MPU RASR: ATTRS.B Position */
+#define MPU_RASR_B_Msk                     (1UL << MPU_RASR_B_Pos)                        /*!< MPU RASR: ATTRS.B Mask */
+
+#define MPU_RASR_SRD_Pos                    8                                             /*!< MPU RASR: Sub-Region Disable Position */
+#define MPU_RASR_SRD_Msk                   (0xFFUL << MPU_RASR_SRD_Pos)                   /*!< MPU RASR: Sub-Region Disable Mask */
+
+#define MPU_RASR_SIZE_Pos                   1                                             /*!< MPU RASR: Region Size Field Position */
+#define MPU_RASR_SIZE_Msk                  (0x1FUL << MPU_RASR_SIZE_Pos)                  /*!< MPU RASR: Region Size Field Mask */
+
+#define MPU_RASR_ENABLE_Pos                 0                                             /*!< MPU RASR: Region enable bit Position */
+#define MPU_RASR_ENABLE_Msk                (1UL /*<< MPU_RASR_ENABLE_Pos*/)               /*!< MPU RASR: Region enable bit Disable Mask */
+
+/*@} end of group CMSIS_MPU */
+#endif
+
+
+#if (__FPU_PRESENT == 1)
+/** \ingroup  CMSIS_core_register
+    \defgroup CMSIS_FPU     Floating Point Unit (FPU)
+    \brief      Type definitions for the Floating Point Unit (FPU)
+  @{
+ */
+
+/** \brief  Structure type to access the Floating Point Unit (FPU).
+ */
+typedef struct
+{
+       uint32_t RESERVED0[1];
+  __IO uint32_t FPCCR;                   /*!< Offset: 0x004 (R/W)  Floating-Point Context Control Register               */
+  __IO uint32_t FPCAR;                   /*!< Offset: 0x008 (R/W)  Floating-Point Context Address Register               */
+  __IO uint32_t FPDSCR;                  /*!< Offset: 0x00C (R/W)  Floating-Point Default Status Control Register        */
+  __I  uint32_t MVFR0;                   /*!< Offset: 0x010 (R/ )  Media and FP Feature Register 0                       */
+  __I  uint32_t MVFR1;                   /*!< Offset: 0x014 (R/ )  Media and FP Feature Register 1                       */
+} FPU_Type;
+
+/* Floating-Point Context Control Register */
+#define FPU_FPCCR_ASPEN_Pos                31                                             /*!< FPCCR: ASPEN bit Position */
+#define FPU_FPCCR_ASPEN_Msk                (1UL << FPU_FPCCR_ASPEN_Pos)                   /*!< FPCCR: ASPEN bit Mask */
+
+#define FPU_FPCCR_LSPEN_Pos                30                                             /*!< FPCCR: LSPEN Position */
+#define FPU_FPCCR_LSPEN_Msk                (1UL << FPU_FPCCR_LSPEN_Pos)                   /*!< FPCCR: LSPEN bit Mask */
+
+#define FPU_FPCCR_MONRDY_Pos                8                                             /*!< FPCCR: MONRDY Position */
+#define FPU_FPCCR_MONRDY_Msk               (1UL << FPU_FPCCR_MONRDY_Pos)                  /*!< FPCCR: MONRDY bit Mask */
+
+#define FPU_FPCCR_BFRDY_Pos                 6                                             /*!< FPCCR: BFRDY Position */
+#define FPU_FPCCR_BFRDY_Msk                (1UL << FPU_FPCCR_BFRDY_Pos)                   /*!< FPCCR: BFRDY bit Mask */
+
+#define FPU_FPCCR_MMRDY_Pos                 5                                             /*!< FPCCR: MMRDY Position */
+#define FPU_FPCCR_MMRDY_Msk                (1UL << FPU_FPCCR_MMRDY_Pos)                   /*!< FPCCR: MMRDY bit Mask */
+
+#define FPU_FPCCR_HFRDY_Pos                 4                                             /*!< FPCCR: HFRDY Position */
+#define FPU_FPCCR_HFRDY_Msk                (1UL << FPU_FPCCR_HFRDY_Pos)                   /*!< FPCCR: HFRDY bit Mask */
+
+#define FPU_FPCCR_THREAD_Pos                3                                             /*!< FPCCR: processor mode bit Position */
+#define FPU_FPCCR_THREAD_Msk               (1UL << FPU_FPCCR_THREAD_Pos)                  /*!< FPCCR: processor mode active bit Mask */
+
+#define FPU_FPCCR_USER_Pos                  1                                             /*!< FPCCR: privilege level bit Position */
+#define FPU_FPCCR_USER_Msk                 (1UL << FPU_FPCCR_USER_Pos)                    /*!< FPCCR: privilege level bit Mask */
+
+#define FPU_FPCCR_LSPACT_Pos                0                                             /*!< FPCCR: Lazy state preservation active bit Position */
+#define FPU_FPCCR_LSPACT_Msk               (1UL /*<< FPU_FPCCR_LSPACT_Pos*/)              /*!< FPCCR: Lazy state preservation active bit Mask */
+
+/* Floating-Point Context Address Register */
+#define FPU_FPCAR_ADDRESS_Pos               3                                             /*!< FPCAR: ADDRESS bit Position */
+#define FPU_FPCAR_ADDRESS_Msk              (0x1FFFFFFFUL << FPU_FPCAR_ADDRESS_Pos)        /*!< FPCAR: ADDRESS bit Mask */
+
+/* Floating-Point Default Status Control Register */
+#define FPU_FPDSCR_AHP_Pos                 26                                             /*!< FPDSCR: AHP bit Position */
+#define FPU_FPDSCR_AHP_Msk                 (1UL << FPU_FPDSCR_AHP_Pos)                    /*!< FPDSCR: AHP bit Mask */
+
+#define FPU_FPDSCR_DN_Pos                  25                                             /*!< FPDSCR: DN bit Position */
+#define FPU_FPDSCR_DN_Msk                  (1UL << FPU_FPDSCR_DN_Pos)                     /*!< FPDSCR: DN bit Mask */
+
+#define FPU_FPDSCR_FZ_Pos                  24                                             /*!< FPDSCR: FZ bit Position */
+#define FPU_FPDSCR_FZ_Msk                  (1UL << FPU_FPDSCR_FZ_Pos)                     /*!< FPDSCR: FZ bit Mask */
+
+#define FPU_FPDSCR_RMode_Pos               22                                             /*!< FPDSCR: RMode bit Position */
+#define FPU_FPDSCR_RMode_Msk               (3UL << FPU_FPDSCR_RMode_Pos)                  /*!< FPDSCR: RMode bit Mask */
+
+/* Media and FP Feature Register 0 */
+#define FPU_MVFR0_FP_rounding_modes_Pos    28                                             /*!< MVFR0: FP rounding modes bits Position */
+#define FPU_MVFR0_FP_rounding_modes_Msk    (0xFUL << FPU_MVFR0_FP_rounding_modes_Pos)     /*!< MVFR0: FP rounding modes bits Mask */
+
+#define FPU_MVFR0_Short_vectors_Pos        24                                             /*!< MVFR0: Short vectors bits Position */
+#define FPU_MVFR0_Short_vectors_Msk        (0xFUL << FPU_MVFR0_Short_vectors_Pos)         /*!< MVFR0: Short vectors bits Mask */
+
+#define FPU_MVFR0_Square_root_Pos          20                                             /*!< MVFR0: Square root bits Position */
+#define FPU_MVFR0_Square_root_Msk          (0xFUL << FPU_MVFR0_Square_root_Pos)           /*!< MVFR0: Square root bits Mask */
+
+#define FPU_MVFR0_Divide_Pos               16                                             /*!< MVFR0: Divide bits Position */
+#define FPU_MVFR0_Divide_Msk               (0xFUL << FPU_MVFR0_Divide_Pos)                /*!< MVFR0: Divide bits Mask */
+
+#define FPU_MVFR0_FP_excep_trapping_Pos    12                                             /*!< MVFR0: FP exception trapping bits Position */
+#define FPU_MVFR0_FP_excep_trapping_Msk    (0xFUL << FPU_MVFR0_FP_excep_trapping_Pos)     /*!< MVFR0: FP exception trapping bits Mask */
+
+#define FPU_MVFR0_Double_precision_Pos      8                                             /*!< MVFR0: Double-precision bits Position */
+#define FPU_MVFR0_Double_precision_Msk     (0xFUL << FPU_MVFR0_Double_precision_Pos)      /*!< MVFR0: Double-precision bits Mask */
+
+#define FPU_MVFR0_Single_precision_Pos      4                                             /*!< MVFR0: Single-precision bits Position */
+#define FPU_MVFR0_Single_precision_Msk     (0xFUL << FPU_MVFR0_Single_precision_Pos)      /*!< MVFR0: Single-precision bits Mask */
+
+#define FPU_MVFR0_A_SIMD_registers_Pos      0                                             /*!< MVFR0: A_SIMD registers bits Position */
+#define FPU_MVFR0_A_SIMD_registers_Msk     (0xFUL /*<< FPU_MVFR0_A_SIMD_registers_Pos*/)  /*!< MVFR0: A_SIMD registers bits Mask */
+
+/* Media and FP Feature Register 1 */
+#define FPU_MVFR1_FP_fused_MAC_Pos         28                                             /*!< MVFR1: FP fused MAC bits Position */
+#define FPU_MVFR1_FP_fused_MAC_Msk         (0xFUL << FPU_MVFR1_FP_fused_MAC_Pos)          /*!< MVFR1: FP fused MAC bits Mask */
+
+#define FPU_MVFR1_FP_HPFP_Pos              24                                             /*!< MVFR1: FP HPFP bits Position */
+#define FPU_MVFR1_FP_HPFP_Msk              (0xFUL << FPU_MVFR1_FP_HPFP_Pos)               /*!< MVFR1: FP HPFP bits Mask */
+
+#define FPU_MVFR1_D_NaN_mode_Pos            4                                             /*!< MVFR1: D_NaN mode bits Position */
+#define FPU_MVFR1_D_NaN_mode_Msk           (0xFUL << FPU_MVFR1_D_NaN_mode_Pos)            /*!< MVFR1: D_NaN mode bits Mask */
+
+#define FPU_MVFR1_FtZ_mode_Pos              0                                             /*!< MVFR1: FtZ mode bits Position */
+#define FPU_MVFR1_FtZ_mode_Msk             (0xFUL /*<< FPU_MVFR1_FtZ_mode_Pos*/)          /*!< MVFR1: FtZ mode bits Mask */
+
+/*@} end of group CMSIS_FPU */
+#endif
+
+
+/** \ingroup  CMSIS_core_register
+    \defgroup CMSIS_CoreDebug       Core Debug Registers (CoreDebug)
+    \brief      Type definitions for the Core Debug Registers
+  @{
+ */
+
+/** \brief  Structure type to access the Core Debug Register (CoreDebug).
+ */
+typedef struct
+{
+  __IO uint32_t DHCSR;                   /*!< Offset: 0x000 (R/W)  Debug Halting Control and Status Register    */
+  __O  uint32_t DCRSR;                   /*!< Offset: 0x004 ( /W)  Debug Core Register Selector Register        */
+  __IO uint32_t DCRDR;                   /*!< Offset: 0x008 (R/W)  Debug Core Register Data Register            */
+  __IO uint32_t DEMCR;                   /*!< Offset: 0x00C (R/W)  Debug Exception and Monitor Control Register */
+} CoreDebug_Type;
+
+/* Debug Halting Control and Status Register */
+#define CoreDebug_DHCSR_DBGKEY_Pos         16                                             /*!< CoreDebug DHCSR: DBGKEY Position */
+#define CoreDebug_DHCSR_DBGKEY_Msk         (0xFFFFUL << CoreDebug_DHCSR_DBGKEY_Pos)       /*!< CoreDebug DHCSR: DBGKEY Mask */
+
+#define CoreDebug_DHCSR_S_RESET_ST_Pos     25                                             /*!< CoreDebug DHCSR: S_RESET_ST Position */
+#define CoreDebug_DHCSR_S_RESET_ST_Msk     (1UL << CoreDebug_DHCSR_S_RESET_ST_Pos)        /*!< CoreDebug DHCSR: S_RESET_ST Mask */
+
+#define CoreDebug_DHCSR_S_RETIRE_ST_Pos    24                                             /*!< CoreDebug DHCSR: S_RETIRE_ST Position */
+#define CoreDebug_DHCSR_S_RETIRE_ST_Msk    (1UL << CoreDebug_DHCSR_S_RETIRE_ST_Pos)       /*!< CoreDebug DHCSR: S_RETIRE_ST Mask */
+
+#define CoreDebug_DHCSR_S_LOCKUP_Pos       19                                             /*!< CoreDebug DHCSR: S_LOCKUP Position */
+#define CoreDebug_DHCSR_S_LOCKUP_Msk       (1UL << CoreDebug_DHCSR_S_LOCKUP_Pos)          /*!< CoreDebug DHCSR: S_LOCKUP Mask */
+
+#define CoreDebug_DHCSR_S_SLEEP_Pos        18                                             /*!< CoreDebug DHCSR: S_SLEEP Position */
+#define CoreDebug_DHCSR_S_SLEEP_Msk        (1UL << CoreDebug_DHCSR_S_SLEEP_Pos)           /*!< CoreDebug DHCSR: S_SLEEP Mask */
+
+#define CoreDebug_DHCSR_S_HALT_Pos         17                                             /*!< CoreDebug DHCSR: S_HALT Position */
+#define CoreDebug_DHCSR_S_HALT_Msk         (1UL << CoreDebug_DHCSR_S_HALT_Pos)            /*!< CoreDebug DHCSR: S_HALT Mask */
+
+#define CoreDebug_DHCSR_S_REGRDY_Pos       16                                             /*!< CoreDebug DHCSR: S_REGRDY Position */
+#define CoreDebug_DHCSR_S_REGRDY_Msk       (1UL << CoreDebug_DHCSR_S_REGRDY_Pos)          /*!< CoreDebug DHCSR: S_REGRDY Mask */
+
+#define CoreDebug_DHCSR_C_SNAPSTALL_Pos     5                                             /*!< CoreDebug DHCSR: C_SNAPSTALL Position */
+#define CoreDebug_DHCSR_C_SNAPSTALL_Msk    (1UL << CoreDebug_DHCSR_C_SNAPSTALL_Pos)       /*!< CoreDebug DHCSR: C_SNAPSTALL Mask */
+
+#define CoreDebug_DHCSR_C_MASKINTS_Pos      3                                             /*!< CoreDebug DHCSR: C_MASKINTS Position */
+#define CoreDebug_DHCSR_C_MASKINTS_Msk     (1UL << CoreDebug_DHCSR_C_MASKINTS_Pos)        /*!< CoreDebug DHCSR: C_MASKINTS Mask */
+
+#define CoreDebug_DHCSR_C_STEP_Pos          2                                             /*!< CoreDebug DHCSR: C_STEP Position */
+#define CoreDebug_DHCSR_C_STEP_Msk         (1UL << CoreDebug_DHCSR_C_STEP_Pos)            /*!< CoreDebug DHCSR: C_STEP Mask */
+
+#define CoreDebug_DHCSR_C_HALT_Pos          1                                             /*!< CoreDebug DHCSR: C_HALT Position */
+#define CoreDebug_DHCSR_C_HALT_Msk         (1UL << CoreDebug_DHCSR_C_HALT_Pos)            /*!< CoreDebug DHCSR: C_HALT Mask */
+
+#define CoreDebug_DHCSR_C_DEBUGEN_Pos       0                                             /*!< CoreDebug DHCSR: C_DEBUGEN Position */
+#define CoreDebug_DHCSR_C_DEBUGEN_Msk      (1UL /*<< CoreDebug_DHCSR_C_DEBUGEN_Pos*/)     /*!< CoreDebug DHCSR: C_DEBUGEN Mask */
+
+/* Debug Core Register Selector Register */
+#define CoreDebug_DCRSR_REGWnR_Pos         16                                             /*!< CoreDebug DCRSR: REGWnR Position */
+#define CoreDebug_DCRSR_REGWnR_Msk         (1UL << CoreDebug_DCRSR_REGWnR_Pos)            /*!< CoreDebug DCRSR: REGWnR Mask */
+
+#define CoreDebug_DCRSR_REGSEL_Pos          0                                             /*!< CoreDebug DCRSR: REGSEL Position */
+#define CoreDebug_DCRSR_REGSEL_Msk         (0x1FUL /*<< CoreDebug_DCRSR_REGSEL_Pos*/)     /*!< CoreDebug DCRSR: REGSEL Mask */
+
+/* Debug Exception and Monitor Control Register */
+#define CoreDebug_DEMCR_TRCENA_Pos         24                                             /*!< CoreDebug DEMCR: TRCENA Position */
+#define CoreDebug_DEMCR_TRCENA_Msk         (1UL << CoreDebug_DEMCR_TRCENA_Pos)            /*!< CoreDebug DEMCR: TRCENA Mask */
+
+#define CoreDebug_DEMCR_MON_REQ_Pos        19                                             /*!< CoreDebug DEMCR: MON_REQ Position */
+#define CoreDebug_DEMCR_MON_REQ_Msk        (1UL << CoreDebug_DEMCR_MON_REQ_Pos)           /*!< CoreDebug DEMCR: MON_REQ Mask */
+
+#define CoreDebug_DEMCR_MON_STEP_Pos       18                                             /*!< CoreDebug DEMCR: MON_STEP Position */
+#define CoreDebug_DEMCR_MON_STEP_Msk       (1UL << CoreDebug_DEMCR_MON_STEP_Pos)          /*!< CoreDebug DEMCR: MON_STEP Mask */
+
+#define CoreDebug_DEMCR_MON_PEND_Pos       17                                             /*!< CoreDebug DEMCR: MON_PEND Position */
+#define CoreDebug_DEMCR_MON_PEND_Msk       (1UL << CoreDebug_DEMCR_MON_PEND_Pos)          /*!< CoreDebug DEMCR: MON_PEND Mask */
+
+#define CoreDebug_DEMCR_MON_EN_Pos         16                                             /*!< CoreDebug DEMCR: MON_EN Position */
+#define CoreDebug_DEMCR_MON_EN_Msk         (1UL << CoreDebug_DEMCR_MON_EN_Pos)            /*!< CoreDebug DEMCR: MON_EN Mask */
+
+#define CoreDebug_DEMCR_VC_HARDERR_Pos     10                                             /*!< CoreDebug DEMCR: VC_HARDERR Position */
+#define CoreDebug_DEMCR_VC_HARDERR_Msk     (1UL << CoreDebug_DEMCR_VC_HARDERR_Pos)        /*!< CoreDebug DEMCR: VC_HARDERR Mask */
+
+#define CoreDebug_DEMCR_VC_INTERR_Pos       9                                             /*!< CoreDebug DEMCR: VC_INTERR Position */
+#define CoreDebug_DEMCR_VC_INTERR_Msk      (1UL << CoreDebug_DEMCR_VC_INTERR_Pos)         /*!< CoreDebug DEMCR: VC_INTERR Mask */
+
+#define CoreDebug_DEMCR_VC_BUSERR_Pos       8                                             /*!< CoreDebug DEMCR: VC_BUSERR Position */
+#define CoreDebug_DEMCR_VC_BUSERR_Msk      (1UL << CoreDebug_DEMCR_VC_BUSERR_Pos)         /*!< CoreDebug DEMCR: VC_BUSERR Mask */
+
+#define CoreDebug_DEMCR_VC_STATERR_Pos      7                                             /*!< CoreDebug DEMCR: VC_STATERR Position */
+#define CoreDebug_DEMCR_VC_STATERR_Msk     (1UL << CoreDebug_DEMCR_VC_STATERR_Pos)        /*!< CoreDebug DEMCR: VC_STATERR Mask */
+
+#define CoreDebug_DEMCR_VC_CHKERR_Pos       6                                             /*!< CoreDebug DEMCR: VC_CHKERR Position */
+#define CoreDebug_DEMCR_VC_CHKERR_Msk      (1UL << CoreDebug_DEMCR_VC_CHKERR_Pos)         /*!< CoreDebug DEMCR: VC_CHKERR Mask */
+
+#define CoreDebug_DEMCR_VC_NOCPERR_Pos      5                                             /*!< CoreDebug DEMCR: VC_NOCPERR Position */
+#define CoreDebug_DEMCR_VC_NOCPERR_Msk     (1UL << CoreDebug_DEMCR_VC_NOCPERR_Pos)        /*!< CoreDebug DEMCR: VC_NOCPERR Mask */
+
+#define CoreDebug_DEMCR_VC_MMERR_Pos        4                                             /*!< CoreDebug DEMCR: VC_MMERR Position */
+#define CoreDebug_DEMCR_VC_MMERR_Msk       (1UL << CoreDebug_DEMCR_VC_MMERR_Pos)          /*!< CoreDebug DEMCR: VC_MMERR Mask */
+
+#define CoreDebug_DEMCR_VC_CORERESET_Pos    0                                             /*!< CoreDebug DEMCR: VC_CORERESET Position */
+#define CoreDebug_DEMCR_VC_CORERESET_Msk   (1UL /*<< CoreDebug_DEMCR_VC_CORERESET_Pos*/)  /*!< CoreDebug DEMCR: VC_CORERESET Mask */
+
+/*@} end of group CMSIS_CoreDebug */
+
+
+/** \ingroup    CMSIS_core_register
+    \defgroup   CMSIS_core_base     Core Definitions
+    \brief      Definitions for base addresses, unions, and structures.
+  @{
+ */
+
+/* Memory mapping of Cortex-M4 Hardware */
+#define SCS_BASE            (0xE000E000UL)                            /*!< System Control Space Base Address  */
+#define ITM_BASE            (0xE0000000UL)                            /*!< ITM Base Address                   */
+#define DWT_BASE            (0xE0001000UL)                            /*!< DWT Base Address                   */
+#define TPI_BASE            (0xE0040000UL)                            /*!< TPI Base Address                   */
+#define CoreDebug_BASE      (0xE000EDF0UL)                            /*!< Core Debug Base Address            */
+#define SysTick_BASE        (SCS_BASE +  0x0010UL)                    /*!< SysTick Base Address               */
+#define NVIC_BASE           (SCS_BASE +  0x0100UL)                    /*!< NVIC Base Address                  */
+#define SCB_BASE            (SCS_BASE +  0x0D00UL)                    /*!< System Control Block Base Address  */
+
+#define SCnSCB              ((SCnSCB_Type    *)     SCS_BASE      )   /*!< System control Register not in SCB */
+#define SCB                 ((SCB_Type       *)     SCB_BASE      )   /*!< SCB configuration struct           */
+#define SysTick             ((SysTick_Type   *)     SysTick_BASE  )   /*!< SysTick configuration struct       */
+#define NVIC                ((NVIC_Type      *)     NVIC_BASE     )   /*!< NVIC configuration struct          */
+#define ITM                 ((ITM_Type       *)     ITM_BASE      )   /*!< ITM configuration struct           */
+#define DWT                 ((DWT_Type       *)     DWT_BASE      )   /*!< DWT configuration struct           */
+#define TPI                 ((TPI_Type       *)     TPI_BASE      )   /*!< TPI configuration struct           */
+#define CoreDebug           ((CoreDebug_Type *)     CoreDebug_BASE)   /*!< Core Debug configuration struct    */
+
+#if (__MPU_PRESENT == 1)
+  #define MPU_BASE          (SCS_BASE +  0x0D90UL)                    /*!< Memory Protection Unit             */
+  #define MPU               ((MPU_Type       *)     MPU_BASE      )   /*!< Memory Protection Unit             */
+#endif
+
+#if (__FPU_PRESENT == 1)
+  #define FPU_BASE          (SCS_BASE +  0x0F30UL)                    /*!< Floating Point Unit                */
+  #define FPU               ((FPU_Type       *)     FPU_BASE      )   /*!< Floating Point Unit                */
+#endif
+
+/*@} */
+
+
+
+/*******************************************************************************
+ *                Hardware Abstraction Layer
+  Core Function Interface contains:
+  - Core NVIC Functions
+  - Core SysTick Functions
+  - Core Debug Functions
+  - Core Register Access Functions
+ ******************************************************************************/
+/** \defgroup CMSIS_Core_FunctionInterface Functions and Instructions Reference
+*/
+
+
+
+/* ##########################   NVIC functions  #################################### */
+/** \ingroup  CMSIS_Core_FunctionInterface
+    \defgroup CMSIS_Core_NVICFunctions NVIC Functions
+    \brief      Functions that manage interrupts and exceptions via the NVIC.
+    @{
+ */
+
+/** \brief  Set Priority Grouping
+
+  The function sets the priority grouping field using the required unlock sequence.
+  The parameter PriorityGroup is assigned to the field SCB->AIRCR [10:8] PRIGROUP field.
+  Only values from 0..7 are used.
+  In case of a conflict between priority grouping and available
+  priority bits (__NVIC_PRIO_BITS), the smallest possible priority group is set.
+
+    \param [in]      PriorityGroup  Priority grouping field.
+ */
+__STATIC_INLINE void NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
+{
+  uint32_t reg_value;
+  uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL);             /* only values 0..7 are used          */
+
+  reg_value  =  SCB->AIRCR;                                                   /* read old register configuration    */
+  reg_value &= ~((uint32_t)(SCB_AIRCR_VECTKEY_Msk | SCB_AIRCR_PRIGROUP_Msk));             /* clear bits to change               */
+  reg_value  =  (reg_value                                   |
+                ((uint32_t)0x5FAUL << SCB_AIRCR_VECTKEY_Pos) |
+                (PriorityGroupTmp << 8)                       );              /* Insert write key and priorty group */
+  SCB->AIRCR =  reg_value;
+}
+
+
+/** \brief  Get Priority Grouping
+
+  The function reads the priority grouping field from the NVIC Interrupt Controller.
+
+    \return                Priority grouping field (SCB->AIRCR [10:8] PRIGROUP field).
+ */
+__STATIC_INLINE uint32_t NVIC_GetPriorityGrouping(void)
+{
+  return ((uint32_t)((SCB->AIRCR & SCB_AIRCR_PRIGROUP_Msk) >> SCB_AIRCR_PRIGROUP_Pos));
+}
+
+
+/** \brief  Enable External Interrupt
+
+    The function enables a device-specific interrupt in the NVIC interrupt controller.
+
+    \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_EnableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISER[(((uint32_t)(int32_t)IRQn) >> 5UL)] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/** \brief  Disable External Interrupt
+
+    The function disables a device-specific interrupt in the NVIC interrupt controller.
+
+    \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_DisableIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICER[(((uint32_t)(int32_t)IRQn) >> 5UL)] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/** \brief  Get Pending Interrupt
+
+    The function reads the pending register in the NVIC and returns the pending bit
+    for the specified interrupt.
+
+    \param [in]      IRQn  Interrupt number.
+
+    \return             0  Interrupt status is not pending.
+    \return             1  Interrupt status is pending.
+ */
+__STATIC_INLINE uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
+{
+  return((uint32_t)(((NVIC->ISPR[(((uint32_t)(int32_t)IRQn) >> 5UL)] & (1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
+}
+
+
+/** \brief  Set Pending Interrupt
+
+    The function sets the pending bit of an external interrupt.
+
+    \param [in]      IRQn  Interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_SetPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ISPR[(((uint32_t)(int32_t)IRQn) >> 5UL)] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/** \brief  Clear Pending Interrupt
+
+    The function clears the pending bit of an external interrupt.
+
+    \param [in]      IRQn  External interrupt number. Value cannot be negative.
+ */
+__STATIC_INLINE void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
+{
+  NVIC->ICPR[(((uint32_t)(int32_t)IRQn) >> 5UL)] = (uint32_t)(1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL));
+}
+
+
+/** \brief  Get Active Interrupt
+
+    The function reads the active register in NVIC and returns the active bit.
+
+    \param [in]      IRQn  Interrupt number.
+
+    \return             0  Interrupt status is not active.
+    \return             1  Interrupt status is active.
+ */
+__STATIC_INLINE uint32_t NVIC_GetActive(IRQn_Type IRQn)
+{
+  return((uint32_t)(((NVIC->IABR[(((uint32_t)(int32_t)IRQn) >> 5UL)] & (1UL << (((uint32_t)(int32_t)IRQn) & 0x1FUL))) != 0UL) ? 1UL : 0UL));
+}
+
+
+/** \brief  Set Interrupt Priority
+
+    The function sets the priority of an interrupt.
+
+    \note The priority cannot be set for every core interrupt.
+
+    \param [in]      IRQn  Interrupt number.
+    \param [in]  priority  Priority to set.
+ */
+__STATIC_INLINE void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
+{
+  if((int32_t)IRQn < 0) {
+    SCB->SHP[(((uint32_t)(int32_t)IRQn) & 0xFUL)-4UL] = (uint8_t)((priority << (8 - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL);
+  }
+  else {
+    NVIC->IP[((uint32_t)(int32_t)IRQn)]               = (uint8_t)((priority << (8 - __NVIC_PRIO_BITS)) & (uint32_t)0xFFUL);
+  }
+}
+
+
+/** \brief  Get Interrupt Priority
+
+    The function reads the priority of an interrupt. The interrupt
+    number can be positive to specify an external (device specific)
+    interrupt, or negative to specify an internal (core) interrupt.
+
+
+    \param [in]   IRQn  Interrupt number.
+    \return             Interrupt Priority. Value is aligned automatically to the implemented
+                        priority bits of the microcontroller.
+ */
+__STATIC_INLINE uint32_t NVIC_GetPriority(IRQn_Type IRQn)
+{
+
+  if((int32_t)IRQn < 0) {
+    return(((uint32_t)SCB->SHP[(((uint32_t)(int32_t)IRQn) & 0xFUL)-4UL] >> (8 - __NVIC_PRIO_BITS)));
+  }
+  else {
+    return(((uint32_t)NVIC->IP[((uint32_t)(int32_t)IRQn)]               >> (8 - __NVIC_PRIO_BITS)));
+  }
+}
+
+
+/** \brief  Encode Priority
+
+    The function encodes the priority for an interrupt with the given priority group,
+    preemptive priority value, and subpriority value.
+    In case of a conflict between priority grouping and available
+    priority bits (__NVIC_PRIO_BITS), the smallest possible priority group is set.
+
+    \param [in]     PriorityGroup  Used priority group.
+    \param [in]   PreemptPriority  Preemptive priority value (starting from 0).
+    \param [in]       SubPriority  Subpriority value (starting from 0).
+    \return                        Encoded priority. Value can be used in the function \ref NVIC_SetPriority().
+ */
+__STATIC_INLINE uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority)
+{
+  uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL);   /* only values 0..7 are used          */
+  uint32_t PreemptPriorityBits;
+  uint32_t SubPriorityBits;
+
+  PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
+  SubPriorityBits     = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
+
+  return (
+           ((PreemptPriority & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL)) << SubPriorityBits) |
+           ((SubPriority     & (uint32_t)((1UL << (SubPriorityBits    )) - 1UL)))
+         );
+}
+
+
+/** \brief  Decode Priority
+
+    The function decodes an interrupt priority value with a given priority group to
+    preemptive priority value and subpriority value.
+    In case of a conflict between priority grouping and available
+    priority bits (__NVIC_PRIO_BITS) the smallest possible priority group is set.
+
+    \param [in]         Priority   Priority value, which can be retrieved with the function \ref NVIC_GetPriority().
+    \param [in]     PriorityGroup  Used priority group.
+    \param [out] pPreemptPriority  Preemptive priority value (starting from 0).
+    \param [out]     pSubPriority  Subpriority value (starting from 0).
+ */
+__STATIC_INLINE void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* pPreemptPriority, uint32_t* pSubPriority)
+{
+  uint32_t PriorityGroupTmp = (PriorityGroup & (uint32_t)0x07UL);   /* only values 0..7 are used          */
+  uint32_t PreemptPriorityBits;
+  uint32_t SubPriorityBits;
+
+  PreemptPriorityBits = ((7UL - PriorityGroupTmp) > (uint32_t)(__NVIC_PRIO_BITS)) ? (uint32_t)(__NVIC_PRIO_BITS) : (uint32_t)(7UL - PriorityGroupTmp);
+  SubPriorityBits     = ((PriorityGroupTmp + (uint32_t)(__NVIC_PRIO_BITS)) < (uint32_t)7UL) ? (uint32_t)0UL : (uint32_t)((PriorityGroupTmp - 7UL) + (uint32_t)(__NVIC_PRIO_BITS));
+
+  *pPreemptPriority = (Priority >> SubPriorityBits) & (uint32_t)((1UL << (PreemptPriorityBits)) - 1UL);
+  *pSubPriority     = (Priority                   ) & (uint32_t)((1UL << (SubPriorityBits    )) - 1UL);
+}
+
+
+/** \brief  System Reset
+
+    The function initiates a system reset request to reset the MCU.
+ */
+__STATIC_INLINE void NVIC_SystemReset(void)
+{
+  __DSB();                                                          /* Ensure all outstanding memory accesses included
+                                                                       buffered write are completed before reset */
+  SCB->AIRCR  = (uint32_t)((0x5FAUL << SCB_AIRCR_VECTKEY_Pos)    |
+                           (SCB->AIRCR & SCB_AIRCR_PRIGROUP_Msk) |
+                            SCB_AIRCR_SYSRESETREQ_Msk    );         /* Keep priority group unchanged */
+  __DSB();                                                          /* Ensure completion of memory access */
+  while(1) { __NOP(); }                                             /* wait until reset */
+}
+
+/*@} end of CMSIS_Core_NVICFunctions */
+
+
+
+/* ##################################    SysTick function  ############################################ */
+/** \ingroup  CMSIS_Core_FunctionInterface
+    \defgroup CMSIS_Core_SysTickFunctions SysTick Functions
+    \brief      Functions that configure the System.
+  @{
+ */
+
+#if (__Vendor_SysTickConfig == 0)
+
+/** \brief  System Tick Configuration
+
+    The function initializes the System Timer and its interrupt, and starts the System Tick Timer.
+    Counter is in free running mode to generate periodic interrupts.
+
+    \param [in]  ticks  Number of ticks between two interrupts.
+
+    \return          0  Function succeeded.
+    \return          1  Function failed.
+
+    \note     When the variable <b>__Vendor_SysTickConfig</b> is set to 1, then the
+    function <b>SysTick_Config</b> is not included. In this case, the file <b><i>device</i>.h</b>
+    must contain a vendor-specific implementation of this function.
+
+ */
+__STATIC_INLINE uint32_t SysTick_Config(uint32_t ticks)
+{
+  if ((ticks - 1UL) > SysTick_LOAD_RELOAD_Msk) { return (1UL); }    /* Reload value impossible */
+
+  SysTick->LOAD  = (uint32_t)(ticks - 1UL);                         /* set reload register */
+  NVIC_SetPriority (SysTick_IRQn, (1UL << __NVIC_PRIO_BITS) - 1UL); /* set Priority for Systick Interrupt */
+  SysTick->VAL   = 0UL;                                             /* Load the SysTick Counter Value */
+  SysTick->CTRL  = SysTick_CTRL_CLKSOURCE_Msk |
+                   SysTick_CTRL_TICKINT_Msk   |
+                   SysTick_CTRL_ENABLE_Msk;                         /* Enable SysTick IRQ and SysTick Timer */
+  return (0UL);                                                     /* Function successful */
+}
+
+#endif
+
+/*@} end of CMSIS_Core_SysTickFunctions */
+
+
+
+/* ##################################### Debug In/Output function ########################################### */
+/** \ingroup  CMSIS_Core_FunctionInterface
+    \defgroup CMSIS_core_DebugFunctions ITM Functions
+    \brief   Functions that access the ITM debug interface.
+  @{
+ */
+
+extern volatile int32_t ITM_RxBuffer;                    /*!< External variable to receive characters.                         */
+#define                 ITM_RXBUFFER_EMPTY    0x5AA55AA5 /*!< Value identifying \ref ITM_RxBuffer is ready for next character. */
+
+
+/** \brief  ITM Send Character
+
+    The function transmits a character via the ITM channel 0, and
+    \li Just returns when no debugger is connected that has booked the output.
+    \li Is blocking when a debugger is connected, but the previous character sent has not been transmitted.
+
+    \param [in]     ch  Character to transmit.
+
+    \returns            Character to transmit.
+ */
+__STATIC_INLINE uint32_t ITM_SendChar (uint32_t ch)
+{
+  if (((ITM->TCR & ITM_TCR_ITMENA_Msk) != 0UL) &&      /* ITM enabled */
+      ((ITM->TER & 1UL               ) != 0UL)   )     /* ITM Port #0 enabled */
+  {
+    while (ITM->PORT[0].u32 == 0UL) { __NOP(); }
+    ITM->PORT[0].u8 = (uint8_t)ch;
+  }
+  return (ch);
+}
+
+
+/** \brief  ITM Receive Character
+
+    The function inputs a character via the external variable \ref ITM_RxBuffer.
+
+    \return             Received character.
+    \return         -1  No character pending.
+ */
+__STATIC_INLINE int32_t ITM_ReceiveChar (void) {
+  int32_t ch = -1;                           /* no character available */
+
+  if (ITM_RxBuffer != ITM_RXBUFFER_EMPTY) {
+    ch = ITM_RxBuffer;
+    ITM_RxBuffer = ITM_RXBUFFER_EMPTY;       /* ready for next character */
+  }
+
+  return (ch);
+}
+
+
+/** \brief  ITM Check Character
+
+    The function checks whether a character is pending for reading in the variable \ref ITM_RxBuffer.
+
+    \return          0  No character available.
+    \return          1  Character available.
+ */
+__STATIC_INLINE int32_t ITM_CheckChar (void) {
+
+  if (ITM_RxBuffer == ITM_RXBUFFER_EMPTY) {
+    return (0);                                 /* no character available */
+  } else {
+    return (1);                                 /*    character available */
+  }
+}
+
+/*@} end of CMSIS_core_DebugFunctions */
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __CORE_CM4_H_DEPENDANT */
+
+#endif /* __CMSIS_GENERIC */
+
--- a/main.cpp	Sun Dec 13 16:11:44 2015 +0000
+++ b/main.cpp	Sun Dec 13 16:46:14 2015 +0000
@@ -1,3 +1,4 @@
+#include "main.h" //FROM DFSDM CORE
 #include <math.h>
 #include "stdio.h"
 #include "mbed.h"
@@ -9,6 +10,25 @@
 #include "SDFileSystem.h"
 //#include "main.h"
 #define samplenum 1024
+//FROM DFSDM CORE
+extern void RECORD(void);
+extern void MSE(void);
+extern void COMPARE(void);
+
+extern  float32_t CONTROLPWR[1024]; //CONTROL 0 PWR
+extern  float32_t CONTROLPHS[1024]; //CTONROL 0 PHS
+extern  float32_t CONTROLPWRMSE;//CONTROL PWR MSE
+extern  float32_t CONTROLPHSMSE;//CONTROL PHS MSE
+extern float32_t POWER[1024];
+extern float32_t PHS[1024];
+extern float32_t PWRMSE;
+extern float32_t PHSMSE;
+
+Serial pc(SERIAL_TX, SERIAL_RX);
+//DigitalIn mybutton(USER_BUTTON);
+//DigitalOut myled(LED1);
+//SDFileSystem sd(PC_12, PC_11, PC_10, PD_2, "sd");
+//
  
 DigitalIn ain1(PC_9);
 DigitalIn ain2(PB_15);
@@ -437,19 +457,19 @@
             TFT.foreground(White);
             TFT.locate(40, 240);
             printf(" recording\n  comparison...");
-            
-//            RECORD();       // RECORD CONTROL 0
-//            uint32_t n;
-//            for(n=0;n<1024;n++)
-//            {   CONTROLPWR[n]=POWER[n]; }
-//            for(n=0;n<1024;n++)
-//            {   CONTROLPHS[n]=PHS[n];   }
- 
-//            RECORD();       //RECORD CONTROL 1
-//            MSE();          //MSE BETWEEN CONTROLS
-//            CONTROLPWRMSE=PWRMSE;
-//            CONTROLPHSMSE=PHSMSE;
- 
+            //DFSDM CORE
+                pc.printf("\r\n\r\nEntering AudioRecord_demo()...\r\n");
+                RECORD();   // RECORD CONTROL 0
+                uint32_t n;
+                for(n=0;n<1024;n++)
+                {CONTROLPWR[n]=POWER[n];}
+                for(n=0;n<1024;n++)
+                {CONTROLPHS[n]=PHS[n];}
+                RECORD(); //RECORD CONTROL 1
+                MSE(); //MSE BETWEEN CONTROLS
+                CONTROLPWRMSE=PWRMSE;
+                CONTROLPHSMSE=PHSMSE;
+            //
             TFT.cls();
             comp=1;
             menu=0;
@@ -481,9 +501,9 @@
             while (stage==5)
             {   sum=0;      sum_mse=0;      sum_st=0;
 
-//                RECORD();                       //  microphone here, with interval
-//                MSE();
-//                COMPARE();
+                RECORD();
+                MSE();
+                COMPARE();
 
                 for(abc=0; abc<samplenum; abc++)
                 {   a1 = a[abc];    b1 = b[abc];    sum = sum+a[abc];
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.h	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,80 @@
+/**
+  ******************************************************************************
+  * @file    main.h 
+  * @author  Central Labs
+  * @version V1.0.0
+  * @date    7-May-2015
+  * @brief   Header for main.c module
+  ******************************************************************************
+   * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
+  *
+  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/software_license_agreement_liberty_v2
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. 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.
+  *   3. Neither the name of STMicroelectronics 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 HOLDER 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.
+  *
+  ********************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __MAIN_H
+#define __MAIN_H
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "audio_if.h"    
+//#include "x_nucleo_cca02m1_audio_l4.h"
+#include "stm32l476g_discovery_audio.h"
+#include "SDFileSystem.h"
+#include "wavfile.h"
+//AUDIO INCLUDES
+#include "arm_const_structs.h"
+#include "math.h"
+#include "core_cm4.h"
+#include "core_cm4_simd.h"
+#include "core_cmFunc.h"
+#include "core_cmInstr.h"
+#include "stdint.h"
+//END AUDIO INCLUDES
+
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+
+
+//extern DigitalIn mybutton;
+//extern DigitalOut myled;
+extern Serial pc;
+extern SDFileSystem sd;
+
+
+#endif /* __MAIN_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32l476g_discovery_audio.cpp	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,1145 @@
+/**
+  ******************************************************************************
+  * @file    stm32l476g_discovery_audio.c
+  * @author  MCD Application Team
+  * @version V1.0.1
+  * @date    16-September-2015
+  * @brief   This file provides a set of functions needed to manage the 
+  *          Audio driver for the STM32L476G-Discovery board.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. 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.
+  *   3. Neither the name of STMicroelectronics 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 HOLDER 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.
+  *
+  ******************************************************************************
+  */
+
+/*==============================================================================
+                                 User NOTES
+                                 
+1. How To use this driver:
+--------------------------
+   + This driver supports STM32L4xx devices on STM32L476G-Discovery (MB1184) Discovery boards.
+        a) to play an audio file (all functions names start by BSP_AUDIO_OUT_xxx)
+        b) to record an audio file through MP34DT01TR, ST MEMS (all functions names start by BSP_AUDIO_IN_xxx)
+
+a) PLAY A FILE:
+==============
+   + Call the function BSP_AUDIO_OUT_Init(
+                                    OutputDevice: physical output mode (OUTPUT_DEVICE_SPEAKER, 
+                                                  OUTPUT_DEVICE_HEADPHONE or OUTPUT_DEVICE_BOTH)
+                                    Volume      : Initial volume to be set (0 is min (mute), 100 is max (100%)
+                                    AudioFreq   : Audio frequency in Hz (8000, 16000, 22500, 32000...)
+                                                  this parameter is relative to the audio file/stream type.
+                                   )
+      This function configures all the hardware required for the audio application (codec, I2C, SAI, 
+      GPIOs, DMA and interrupt if needed). This function returns AUDIO_OK if configuration is OK.
+      If the returned value is different from AUDIO_OK or the function is stuck then the communication with
+      the audio codec has failed.
+      - OUTPUT_DEVICE_SPEAKER  : only speaker will be set as output for the audio stream.
+      - OUTPUT_DEVICE_HEADPHONE: only headphones will be set as output for the audio stream.
+      - OUTPUT_DEVICE_BOTH     : both Speaker and Headphone are used as outputs for the audio stream
+                                 at the same time.
+
+   + Call the function BSP_AUDIO_OUT_RegisterCallbacks to register user callbacks
+     required to manage audio data streaming towards the audio codec (ErrorCallback(),
+     HalfTransfer_CallBack() and TransferComplete_CallBack()).
+
+   + Call the function BSP_AUDIO_OUT_Play() to start audio playback (for the first time).
+   + Call the function BSP_AUDIO_OUT_Pause() to pause audio playabck   
+   + Call the function BSP_AUDIO_OUT_Resume() to resume audio playback.
+       Note. After calling BSP_AUDIO_OUT_Pause() function for pause, only BSP_AUDIO_OUT_Resume() should be called
+          for resume (it is not allowed to call BSP_AUDIO_OUT_Play() in this case).
+       Note. This function should be called only when the audio file is played or paused (not stopped).
+   + Call the function BSP_AUDIO_OUT_Stop() to stop audio playback.
+   + To modify the volume level, the sampling frequency, the device output mode, 
+      the mute status or the audio configuration or the stop, use the functions: BSP_AUDIO_OUT_SetVolume(), 
+      AUDIO_OUT_SetFrequency(), BSP_AUDIO_OUT_SetOutputMode(), BSP_AUDIO_OUT_SetMute()and 
+      BSP_AUDIO_OUT_ChangeAudioConfig().
+ 
+Driver architecture:
+--------------------
+   + This driver provides the audio layer high level API: it consists in functions
+     exported in the stm32l476g_discovery_audio.h file (e.g. BSP_AUDIO_OUT_Init(),
+     BSP_AUDIO_OUT_Play(), ...).
+   + This driver also includes the Media Access Layer (MAL): it consists in 
+     functions allowing to access setup the audio devices. These functions 
+     are  included as local functions into the stm32l476g_discovery_audio.c file
+     (e.g. AUDIO_SAIx_Init()).
+
+Known Limitations:
+------------------
+   1- Communication with the audio codec (through I2C) may be corrupted if it is interrupted by some
+      user interrupt routines (in this case, interrupts could be disabled just before the start of 
+      communication then re-enabled when it is over). Note that this communication is only done at
+      the configuration phase (BSP_AUDIO_OUT_Init() or BSP_AUDIO_OUT_Stop()) and when Volume control modification is 
+      performed (BSP_AUDIO_OUT_SetVolume() or BSP_AUDIO_OUT_SetMute()or BSP_AUDIO_OUT_SetOutputMode()). 
+      When the audio data is played, no communication is required with the audio codec.
+   2- Parsing of audio file is not implemented (in order to determine audio file properties: Mono/Stereo, Data size, 
+      File size, Audio Frequency, Audio Data header size ...). The configuration is fixed for the given audio file.
+   3- Supports only 16-bits audio data size.
+
+b) RECORD A FILE:
+================
+   + Call the function BSP_AUDIO_IN_Init(
+                                    AudioFreq: Audio frequency in Hz (8000, 16000, 22500, 32000 ...)
+                                    )
+      This function configures all the hardware required for the audio application (DFSDM, 
+      GPIOs, DMA and interrupt if needed). This function returns AUDIO_OK if the 
+      configuration completes successfully.
+
+   + Call the function BSP_AUDIO_IN_RegisterCallbacks to register user callbacks
+     used to stream audio data toward the record buffer (ErrorCallback(),
+     HalfTransfer_CallBack() and TransferComplete_CallBack()).
+
+   + Call the function BSP_AUDIO_IN_Record(
+                            pbuf Main buffer pointer for the recorded data storing  
+                            size Current size of the recorded buffer
+                            )
+      to start recording from the microphone.
+
+   + Call the function AUDIO_IN_STOP() to stop recording 
+==============================================================================*/
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32l476g_discovery_audio.h"
+
+/** @addtogroup BSP
+  * @{
+  */
+
+/** @addtogroup STM32L476G_DISCOVERY
+  * @{
+  */
+
+/** @defgroup STM32L476G_DISCOVERY_AUDIO STM32L476G-DISCOVERY AUDIO
+  * @brief This file includes the low layer driver for cs43l22 Audio Codec
+  *        available on STM32L476G-Discovery board(MB1184).
+  * @{
+  */ 
+
+/* Private typedef -----------------------------------------------------------*/
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Private_Types Private Types
+  * @{
+  */
+
+/* Private typedef -----------------------------------------------------------*/
+
+  
+typedef struct
+{
+  
+  Audio_CallbackTypeDef CbError;            /* pointer to the callback function invoked when ... */
+  Audio_CallbackTypeDef CbHalfTransfer;     /* pointer to the callback function invoked when ... */
+  Audio_CallbackTypeDef CbTransferComplete; /* pointer to the callback function invoked when ... */
+} AUDIO_OUT_TypeDef;
+
+typedef struct
+{
+  DFSDM_Channel_HandleTypeDef hDfsdmLeftChannel;  /* DFSDM channel handle used for left channel */
+  DMA_HandleTypeDef           hDmaDfsdmLeft;      /* DMA handle used for DFSDM regular conversions on left channel */
+  int32_t *                   LeftRecBuff;        /* Buffers for left samples */
+  uint32_t                Frequency;        /* Record Frequency */
+  uint32_t                BitResolution;    /* Record bit resolution */
+  uint32_t                ChannelNbr;       /* Record Channel Number */
+  uint16_t *              pRecBuf;          /* Pointer to record user buffer */
+  uint32_t                RecSize;          /* Size to record in mono, double size to record in stereo */
+  Audio_CallbackTypeDef       CbError;            /* pointer to the callback function invoked when a DMA transfer fails */
+  Audio_CallbackTypeDef       CbHalfTransfer;     /* pointer to the callback function invoked when half of the DMA transfer is completed */
+  Audio_CallbackTypeDef       CbTransferComplete; /* pointer to the callback function invoked when the DMA transfer is completed */
+} AUDIO_IN_TypeDef;
+
+/**
+  * @}
+  */
+
+/* Private defines ------------------------------------------------------------*/
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Private_Constants Private Constants
+  * @{
+  */
+/**
+  * @}
+  */
+
+/* Private macros ------------------------------------------------------------*/
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Private_Macros Private Macros
+  * @{
+  */
+/*### PLAY ###*/
+/* SCK(kHz) = SAI_CK_x/(SAIClockDivider*2*256) */
+#define SAIClockDivider(__FREQUENCY__) \
+        (__FREQUENCY__ == AUDIO_FREQUENCY_8K)  ? 12 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 2 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 6 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 1 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 3 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 0 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 2 : 1  \
+
+/*### RECORD ###*/
+#define DFSDMOverSampling(__FREQUENCY__) \
+        (__FREQUENCY__ == AUDIO_FREQUENCY_8K)  ? 256 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 256 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 128 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 128 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 64 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 64  \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 32 : 16  \
+
+#define DFSDMClockDivider(__FREQUENCY__) \
+        (__FREQUENCY__ == AUDIO_FREQUENCY_8K)  ? 24 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 4 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 24 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 4 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 24 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 4  \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 32 : 32  \
+
+#define DFSDMFilterOrder(__FREQUENCY__) \
+        (__FREQUENCY__ == AUDIO_FREQUENCY_8K)  ? DFSDM_FILTER_SINC3_ORDER \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? DFSDM_FILTER_SINC3_ORDER \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? DFSDM_FILTER_SINC3_ORDER \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? DFSDM_FILTER_SINC3_ORDER \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? DFSDM_FILTER_SINC4_ORDER \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? DFSDM_FILTER_SINC4_ORDER  \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? DFSDM_FILTER_SINC4_ORDER : DFSDM_FILTER_SINC5_ORDER  \
+
+#define DFSDMRightBitShift(__FREQUENCY__) \
+        (__FREQUENCY__ == AUDIO_FREQUENCY_8K)  ? 2 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_11K) ? 3 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_16K) ? 3 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_22K) ? 0 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_32K) ? 3 \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_44K) ? 3  \
+      : (__FREQUENCY__ == AUDIO_FREQUENCY_48K) ? 7 : 0  \
+
+/* Saturate the record PCM sample */
+#define SaturaLH(N, L, H) (((N)<(L))?(L):(((N)>(H))?(H):(N)))
+
+/**
+  * @}
+  */ 
+  
+/* Private variables ---------------------------------------------------------*/
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Private_Variables Private Variables
+  * @{
+  */
+/* Audio output context information */
+static AUDIO_OUT_TypeDef hAudioOut;
+
+/* Audio input context information */
+AUDIO_IN_TypeDef hAudioIn;
+
+/* SAI DMA handle */
+DMA_HandleTypeDef hDmaSai;
+/**
+  * @}
+  */
+
+/* Exported variables ---------------------------------------------------------*/
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Exported_Variables Exported Variables
+  * @{
+  */
+/* SAIx handle */
+SAI_HandleTypeDef               BSP_AUDIO_hSai;
+    
+/* DFSDM filter handle */
+DFSDM_Filter_HandleTypeDef      BSP_AUDIO_hDfsdmLeftFilter;
+/**
+  * @}
+  */
+  
+/* Information indicating which part of the recorded buffer is ready for audio loopback  */
+RecordBufferOffset_Typedef  RecordBufferOffset = BUFFER_OFFSET_NONE;
+
+/* Private function prototypes -----------------------------------------------*/
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Private_Functions Private Functions
+  * @{
+  */
+//static void    AUDIO_CODEC_Reset(void);
+//static uint8_t AUDIO_SAIx_Init(uint32_t AudioFreq);
+//static uint8_t AUDIO_SAIx_DeInit(void);
+static uint8_t AUDIO_DFSDMx_Init(uint32_t AudioFreq);
+static uint8_t AUDIO_DFSDMx_DeInit(void);
+static uint8_t AUDIO_SAIPLLConfig(uint32_t AudioFreq);
+/**
+  * @}
+  */
+
+/* Exported functions --------------------------------------------------------*/
+/** @addtogroup STM32L476G_DISCOVERY_AUDIO_Exported_Functions
+  * @{
+  */ 
+
+/**
+  * @brief  Configures the audio codec related peripherals.
+  * @param  OutputDevice: OUTPUT_DEVICE_SPEAKER, OUTPUT_DEVICE_HEADPHONE,
+  *                       or OUTPUT_DEVICE_BOTH.
+  * @param  Volume: Initial volume level (from 0 (Mute) to 100 (Max))
+  * @param  AudioFreq: Audio frequency used to play the audio stream.ion.  
+  * @retval BSP AUDIO status
+  * @note   The SAI PLL input clock must be configure in the user application.
+  *         The SAI PLL configuration done within this function assumes that
+  *         the SAI PLL input clock runs at 8 MHz.
+  */
+
+/**
+  * @brief  Tx Transfer completed callbacks.
+  * @param  hsai: SAI handle
+  * @retval None
+  */
+void HAL_SAI_TxCpltCallback(SAI_HandleTypeDef *hsai)
+{
+  /* Invoke the registered 'TransferComplete' function (if any) */
+  if (hAudioOut.CbTransferComplete != (Audio_CallbackTypeDef)NULL)
+  {
+    hAudioOut.CbTransferComplete();
+  }
+}
+
+/**
+  * @brief  Tx Half Transfer completed callbacks.
+  * @param  hsai: SAI handle
+  * @retval None
+  */
+void HAL_SAI_TxHalfCpltCallback(SAI_HandleTypeDef *hsai)
+{
+  /* Invoke the registered 'HalfTransfer' callback function (if any) */
+  if (hAudioOut.CbHalfTransfer != (Audio_CallbackTypeDef)NULL)
+  {
+    hAudioOut.CbHalfTransfer();
+  }
+}
+
+/**
+  * @brief  SAI error callbacks.
+  * @param  hsai: SAI handle
+  * @retval None
+  */
+void HAL_SAI_ErrorCallback(SAI_HandleTypeDef *hsai)
+{
+  /* Invoke the registered 'ErrorCallback' callback function (if any) */
+  if (hAudioOut.CbError != (Audio_CallbackTypeDef)NULL)
+  {
+    hAudioOut.CbError();
+  }
+}
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32L476G_EVAL_AUDIO_Exported_Functions
+  * @{
+  */
+  
+/**
+  * @brief  Initializes micropone related peripherals.
+  * @note   This function assumes that the SAI input clock (through PLL_M)
+  *         is already configured and ready to be used.  
+  * @param  AudioFreq: Audio frequency to be configured for the SAI peripheral. 
+  * @param  BitRes: Audio frequency to be configured for the SAI peripheral.
+  * @param  ChnlNbr: Audio frequency to be configured for the SAI peripheral.
+  * @retval BSP AUDIO status
+  */
+uint8_t BSP_AUDIO_IN_Init(uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr)
+{
+  /* Update the audio input context */
+  hAudioIn.Frequency          = AudioFreq;
+  hAudioIn.BitResolution      = BitRes;
+  hAudioIn.ChannelNbr         = ChnlNbr;
+  hAudioIn.CbError            = (Audio_CallbackTypeDef)NULL; 
+  hAudioIn.CbHalfTransfer     = (Audio_CallbackTypeDef)NULL; 
+  hAudioIn.CbTransferComplete = (Audio_CallbackTypeDef)NULL;
+
+  /* Configure the SAI PLL according to the requested audio frequency */
+  if (AUDIO_SAIPLLConfig(AudioFreq) != AUDIO_OK)
+  {
+    return AUDIO_ERROR;
+  }
+ 
+  /* Initializes the Digital Filter for Sigma-Delta Modulators interface */
+  if(AUDIO_DFSDMx_Init(AudioFreq) != AUDIO_OK)
+  {
+    return AUDIO_ERROR;
+  }
+  
+  /* Set Callback function pointers */
+  BSP_AUDIO_IN_RegisterCallbacks(AudioRecord_Error_CallBack,
+                                 AudioRecord_HalfTransfer_CallBack,
+                                 AudioRecord_TransferComplete_CallBack);
+  
+  
+  /* Initialize record buffer offset */
+  RecordBufferOffset = BUFFER_OFFSET_NONE;
+  
+  return AUDIO_OK;
+  }
+
+/**
+  * @brief  De-Initializes microphone related peripherals.
+  * @retval BSP AUDIO status
+
+  */
+uint8_t BSP_AUDIO_IN_DeInit(void)
+{
+  /* De-initializes the Digital Filter for Sigma-Delta Modulators interface */
+  if (AUDIO_DFSDMx_DeInit() != AUDIO_OK)
+  {
+    return AUDIO_ERROR;
+  }
+  
+  /* Reset the audio input context */
+  memset(&hAudioIn, 0, sizeof(hAudioIn));
+
+  return AUDIO_OK;
+}
+
+/**
+  * @brief  Starts audio recording.
+  * @param  pbuf: Main buffer pointer for the recorded data storing  
+  * @param  size: Current size of the recorded buffer
+  * @note   The Right channel is start at first with synchro on start of Left channel
+  * @retval BSP AUDIO status
+  */
+uint8_t BSP_AUDIO_IN_Record(uint16_t* pbuf, uint32_t size)
+{
+  hAudioIn.pRecBuf = pbuf;
+  hAudioIn.RecSize = size;
+
+  /* Allocate hAudioIn.LeftRecBuff buffer */
+#if defined(BSP_AUDIO_USE_RTOS)
+  hAudioIn.LeftRecBuff  = (int32_t *)k_malloc(size * sizeof(int32_t));
+#else
+  hAudioIn.LeftRecBuff  = (int32_t *)malloc(size * sizeof(int32_t));
+#endif
+  if(hAudioIn.LeftRecBuff == NULL)
+  {
+    return AUDIO_ERROR;
+  }
+
+  /* Call the Media layer start function for left channel */
+  if(HAL_DFSDM_FilterRegularStart_DMA(&BSP_AUDIO_hDfsdmLeftFilter, 
+                                      (int32_t*)hAudioIn.LeftRecBuff, 
+                                      (hAudioIn.RecSize/DEFAULT_AUDIO_IN_CHANNEL_NBR)) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+
+  return AUDIO_OK;
+}
+
+/**
+  * @brief  Updates the audio frequency.
+  * @param  AudioFreq: Audio frequency used to record the audio stream.
+  * @note   This API should be called after the BSP_AUDIO_IN_Init() to adjust the
+  *         audio frequency.
+  * @retval BSP AUDIO status
+  */
+uint8_t BSP_AUDIO_IN_SetFrequency(uint32_t AudioFreq)
+{ 
+  /* Configure the SAI PLL according to the requested audio frequency */
+  if (AUDIO_SAIPLLConfig(AudioFreq) != AUDIO_OK)
+  {
+    return AUDIO_ERROR;
+  }
+
+  /* De-initializes the Digital Filter for Sigma-Delta Modulators interface */
+  if(AUDIO_DFSDMx_DeInit() != AUDIO_OK)
+  {
+    return AUDIO_ERROR;
+  }
+  
+  /* Initializes the Digital Filter for Sigma-Delta Modulators interface */
+  if(AUDIO_DFSDMx_Init(AudioFreq) != AUDIO_OK)
+  {
+    return AUDIO_ERROR;
+  }
+  
+  return AUDIO_OK;
+}
+
+/**
+  * @brief  Regular conversion complete callback. 
+  * @note   In interrupt mode, user has to read conversion value in this function
+            using HAL_DFSDM_FilterGetRegularValue.
+  * @param  hdfsdm_filter : DFSDM filter handle.
+  * @retval None
+  */
+void HAL_DFSDM_FilterRegConvCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
+{
+  uint32_t index;
+  uint32_t recbufsize = (hAudioIn.RecSize/DEFAULT_AUDIO_IN_CHANNEL_NBR);
+  
+  for(index = (recbufsize/2); index < recbufsize; index++)
+  {
+    hAudioIn.pRecBuf[index] = (uint16_t)(SaturaLH((hAudioIn.LeftRecBuff[index] >> 8), -32760, 32760));
+  }
+  
+  /* Invoke the registered 'TransferComplete' function (if any) */
+  if (hAudioIn.CbTransferComplete != (Audio_CallbackTypeDef)NULL)
+  {
+    hAudioIn.CbTransferComplete();
+  }
+}
+
+/**
+  * @brief  Half regular conversion complete callback. 
+  * @param  hdfsdm_filter : DFSDM filter handle.
+  * @retval None
+  */
+void HAL_DFSDM_FilterRegConvHalfCpltCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
+{
+  uint32_t index;
+  uint32_t recbufsize = (hAudioIn.RecSize/DEFAULT_AUDIO_IN_CHANNEL_NBR);
+  
+  
+  for(index = 0; index < (recbufsize/2); index++)
+  {
+    hAudioIn.pRecBuf[index] = (uint16_t)(SaturaLH((hAudioIn.LeftRecBuff[index] >> 8), -32760, 32760));
+  }
+  
+  /* Invoke the registered 'HalfTransfer' callback function (if any) */
+  if (hAudioIn.CbHalfTransfer != (Audio_CallbackTypeDef)NULL)
+  {
+    hAudioIn.CbHalfTransfer();
+  }
+}
+
+/**
+  * @brief  Error callback. 
+  * @param  hdfsdm_filter : DFSDM filter handle.
+  * @retval None
+  */
+void HAL_DFSDM_FilterErrorCallback(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
+{
+  /* Invoke the registered 'ErrorCallback' callback function (if any) */
+  if (hAudioIn.CbError != (Audio_CallbackTypeDef)NULL)
+  {
+    hAudioIn.CbError();
+  }
+}
+
+/**
+  * @brief  Stops audio recording.
+  * @retval BSP AUDIO status
+  */
+uint8_t BSP_AUDIO_IN_Stop(void)
+{
+  /* Call the Media layer stop function for left channel */
+  if(HAL_DFSDM_FilterRegularStop_DMA(&BSP_AUDIO_hDfsdmLeftFilter) != HAL_OK )
+  {
+    return AUDIO_ERROR;
+  }
+
+  /* Free hAudioIn.LeftRecBuff buffer */
+#if defined(BSP_AUDIO_USE_RTOS)
+  k_free((void *)hAudioIn.LeftRecBuff);
+#else
+  free((void *)hAudioIn.LeftRecBuff);
+#endif
+  
+  return AUDIO_OK;
+}
+
+/**
+  * @brief  Pauses the audio file stream.
+  * @retval BSP AUDIO status
+  */
+uint8_t BSP_AUDIO_IN_Pause(void)
+{    
+  /* Call the Media layer stop function */
+  if(HAL_DFSDM_FilterRegularStop_DMA(&BSP_AUDIO_hDfsdmLeftFilter) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+  
+  return AUDIO_OK;
+}
+
+/**
+  * @brief  Resumes the audio file stream.
+  * @retval BSP AUDIO status
+  */
+uint8_t BSP_AUDIO_IN_Resume(void)
+{    
+  /* Call the Media layer start function for left channel */
+  if(HAL_DFSDM_FilterRegularStart_DMA(&BSP_AUDIO_hDfsdmLeftFilter,
+                                      (int32_t*)hAudioIn.LeftRecBuff,
+                                      (hAudioIn.RecSize/DEFAULT_AUDIO_IN_CHANNEL_NBR)) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+  
+  return AUDIO_OK;
+}
+
+/**
+  * @brief  register user callback functions 
+  * @param  ErrorCallback: pointer to the error callback function
+  * @param  HalfTransferCallback: pointer to the half transfer callback function
+  * @param  TransferCompleteCallback: pointer to the transfer complete callback function
+  * @retval None
+  */
+void BSP_AUDIO_IN_RegisterCallbacks(Audio_CallbackTypeDef ErrorCallback,
+                                    Audio_CallbackTypeDef HalfTransferCallback, 
+                                    Audio_CallbackTypeDef TransferCompleteCallback)
+{
+  hAudioIn.CbError            = ErrorCallback; 
+  hAudioIn.CbHalfTransfer     = HalfTransferCallback; 
+  hAudioIn.CbTransferComplete = TransferCompleteCallback;
+}
+/**
+  * @}
+  */
+
+/* private functions --------------------------------------------------------*/
+/** @addtogroup STM32L476G_DISCOVERY_AUDIO_Private_Functions
+  * @{
+  */
+/**
+  * @brief  Initializes the Audio Codec audio interface (SAI).
+  * @param  AudioFreq: Audio frequency to be configured for the SAI peripheral.
+  * @note   The default SlotActive configuration is set to CODEC_AUDIOFRAME_SLOT_0123 
+  *         and user can update this configuration using 
+  * @retval BSP AUDIO status
+  */
+static uint8_t AUDIO_SAIx_Init(uint32_t AudioFreq)
+{
+  /* Disable SAI peripheral to allow access to SAI internal registers */
+  __HAL_SAI_DISABLE(&BSP_AUDIO_hSai);
+  
+  /* Initialize the BSP_AUDIO_hSai Instance parameter */
+  BSP_AUDIO_hSai.Instance = AUDIO_SAIx;
+  
+  /* Configure SAI_Block_x 
+  LSBFirst: Disabled 
+  DataSize: 16 */
+  BSP_AUDIO_hSai.Init.AudioMode      = SAI_MODEMASTER_TX;
+  BSP_AUDIO_hSai.Init.Synchro        = SAI_ASYNCHRONOUS;
+  BSP_AUDIO_hSai.Init.SynchroExt     = SAI_SYNCEXT_DISABLE;
+  BSP_AUDIO_hSai.Init.OutputDrive    = SAI_OUTPUTDRIVE_ENABLE;
+  BSP_AUDIO_hSai.Init.NoDivider      = SAI_MASTERDIVIDER_ENABLE;
+  BSP_AUDIO_hSai.Init.FIFOThreshold  = SAI_FIFOTHRESHOLD_1QF;
+  BSP_AUDIO_hSai.Init.AudioFrequency = SAI_AUDIO_FREQUENCY_MCKDIV;
+  BSP_AUDIO_hSai.Init.Mckdiv         = SAIClockDivider(AudioFreq);
+  BSP_AUDIO_hSai.Init.MonoStereoMode = SAI_STEREOMODE;
+  BSP_AUDIO_hSai.Init.CompandingMode = SAI_NOCOMPANDING;
+  BSP_AUDIO_hSai.Init.TriState       = SAI_OUTPUT_NOTRELEASED;
+  BSP_AUDIO_hSai.Init.Protocol       = SAI_FREE_PROTOCOL;
+  BSP_AUDIO_hSai.Init.DataSize       = SAI_DATASIZE_16;
+  BSP_AUDIO_hSai.Init.FirstBit       = SAI_FIRSTBIT_MSB;
+  BSP_AUDIO_hSai.Init.ClockStrobing  = SAI_CLOCKSTROBING_RISINGEDGE;
+  
+  /* Configure SAI_Block_x Frame 
+  Frame Length: 32
+  Frame active Length: 16
+  FS Definition: Start frame + Channel Side identification
+  FS Polarity: FS active Low
+  FS Offset: FS asserted one bit before the first bit of slot 0 */ 
+  BSP_AUDIO_hSai.FrameInit.FrameLength = 32;
+  BSP_AUDIO_hSai.FrameInit.ActiveFrameLength = 16;
+  BSP_AUDIO_hSai.FrameInit.FSDefinition = SAI_FS_CHANNEL_IDENTIFICATION;
+  BSP_AUDIO_hSai.FrameInit.FSPolarity = SAI_FS_ACTIVE_LOW;
+  BSP_AUDIO_hSai.FrameInit.FSOffset = SAI_FS_BEFOREFIRSTBIT;
+  
+  /* Configure SAI Block_x Slot 
+  Slot First Bit Offset: 0
+  Slot Size  : 16
+  Slot Number: 2
+  Slot Active: Slots 0 and 1 actives */
+  BSP_AUDIO_hSai.SlotInit.FirstBitOffset = 0;
+  BSP_AUDIO_hSai.SlotInit.SlotSize = SAI_SLOTSIZE_DATASIZE;
+  BSP_AUDIO_hSai.SlotInit.SlotNumber = 2; 
+  BSP_AUDIO_hSai.SlotInit.SlotActive = SAI_SLOTACTIVE_0 | SAI_SLOTACTIVE_1;
+
+  /* Initializes the SAI peripheral*/
+  if (HAL_SAI_Init(&BSP_AUDIO_hSai) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+  
+  /* Enable SAI peripheral to generate MCLK */
+  __HAL_SAI_ENABLE(&BSP_AUDIO_hSai);
+  
+  return AUDIO_OK;
+  
+}
+
+/**
+  * @brief  De-initializes the Audio Codec audio interface (SAI).
+  * @retval BSP AUDIO status
+  */
+static uint8_t AUDIO_SAIx_DeInit(void)
+{
+  /* Disable the SAI audio block */
+  __HAL_SAI_DISABLE(&BSP_AUDIO_hSai);
+
+  /* De-initializes the SAI peripheral */
+  if (HAL_SAI_DeInit(&BSP_AUDIO_hSai) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+  
+  /* Disable SAIx PLL */
+  if (AUDIO_SAIx_PLL_DISABLE() != AUDIO_OK)
+  {
+    return AUDIO_ERROR;
+  }  
+  
+  return AUDIO_OK;
+}
+
+/**
+  * @brief  SAI MSP Init
+  * @param  hsai : pointer to a SAI_HandleTypeDef structure
+  * @retval None
+  */
+void HAL_SAI_MspInit(SAI_HandleTypeDef *hsai)
+{ 
+  GPIO_InitTypeDef  GPIO_InitStruct;  
+
+  /* Enable SAI clock */
+  AUDIO_SAIx_CLK_ENABLE();
+  
+  /* Enable GPIO clock */
+  AUDIO_SAIx_MCK_SCK_SD_FS_ENABLE();
+  
+  /* CODEC_SAI pins configuration: FS, SCK, MCK and SD pins ------------------*/
+  GPIO_InitStruct.Pin = AUDIO_SAIx_FS_PIN | AUDIO_SAIx_SCK_PIN | AUDIO_SAIx_SD_PIN | AUDIO_SAIx_MCK_PIN;
+  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
+  GPIO_InitStruct.Alternate = AUDIO_SAIx_MCK_SCK_SD_FS_AF;
+  HAL_GPIO_Init(AUDIO_SAIx_MCK_SCK_SD_FS_GPIO_PORT, &GPIO_InitStruct);
+
+  /* Enable the DMA clock */
+  AUDIO_SAIx_DMAx_CLK_ENABLE();
+    
+  if(hsai->Instance == AUDIO_SAIx)
+  {
+    /* Configure the hDmaSai handle parameters */   
+    hDmaSai.Init.Request             = DMA_REQUEST_1;
+    hDmaSai.Init.Direction           = DMA_MEMORY_TO_PERIPH;
+    hDmaSai.Init.PeriphInc           = DMA_PINC_DISABLE;
+    hDmaSai.Init.MemInc              = DMA_MINC_ENABLE;
+    hDmaSai.Init.PeriphDataAlignment = AUDIO_SAIx_DMAx_PERIPH_DATA_SIZE;
+    hDmaSai.Init.MemDataAlignment    = AUDIO_SAIx_DMAx_MEM_DATA_SIZE;
+    hDmaSai.Init.Mode                = DMA_NORMAL;
+    hDmaSai.Init.Priority            = DMA_PRIORITY_HIGH;
+    
+    hDmaSai.Instance = AUDIO_SAIx_DMAx_CHANNEL;
+    
+    /* Associate the DMA handle */
+    __HAL_LINKDMA(hsai, hdmatx, hDmaSai);
+    
+    /* Deinitialize the Stream for new transfer */
+    HAL_DMA_DeInit(&hDmaSai);
+    
+    /* Configure the DMA Stream */
+    HAL_DMA_Init(&hDmaSai);      
+  }
+  
+  /* SAI DMA IRQ Channel configuration */
+  HAL_NVIC_SetPriority(AUDIO_SAIx_DMAx_IRQ, AUDIO_OUT_IRQ_PREPRIO, 0);
+  HAL_NVIC_EnableIRQ(AUDIO_SAIx_DMAx_IRQ); 
+}
+
+/**
+  * @brief  SAI MSP De-init
+  * @param  hsai : pointer to a SAI_HandleTypeDef structure
+  * @retval None
+  */
+void HAL_SAI_MspDeInit(SAI_HandleTypeDef *hsai)
+{
+  /* Disable SAI DMA Channel IRQ  */
+  HAL_NVIC_DisableIRQ(AUDIO_SAIx_DMAx_IRQ); 
+
+  /* Reset the DMA Stream configuration*/
+  HAL_DMA_DeInit(&hDmaSai);
+  
+  /* Disable the DMA clock */
+  AUDIO_SAIx_DMAx_CLK_DISABLE();
+    
+  /* De-initialize FS, SCK, MCK and SD pins*/
+  HAL_GPIO_DeInit(AUDIO_SAIx_MCK_SCK_SD_FS_GPIO_PORT, 
+                  AUDIO_SAIx_FS_PIN | AUDIO_SAIx_SCK_PIN | AUDIO_SAIx_SD_PIN | AUDIO_SAIx_MCK_PIN);
+  
+  /* Disable GPIO clock */
+  AUDIO_SAIx_MCK_SCK_SD_FS_DISABLE();
+  
+  /* Disable SAI clock */
+  AUDIO_SAIx_CLK_DISABLE();
+}
+
+/**
+  * @brief  Resets the audio codec. It restores the default configuration of the 
+  *         codec (this function shall be called before initializing the codec).
+  * @retval None
+  */
+
+
+/**
+  * @}
+  */
+
+/** @addtogroup STM32L476G_DISCOVERY_AUDIO_Private_Functions
+  * @{
+  */ 
+
+/**
+  * @brief  Initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
+  * @param  AudioFreq: Audio frequency to be used to set correctly the DFSDM peripheral.
+  * @retval BSP AUDIO status
+  */
+static uint8_t AUDIO_DFSDMx_Init(uint32_t AudioFreq)
+{
+  /*####CHANNEL 2####*/
+  hAudioIn.hDfsdmLeftChannel.Init.OutputClock.Activation   = ENABLE;
+  hAudioIn.hDfsdmLeftChannel.Init.OutputClock.Selection    = DFSDM_CHANNEL_OUTPUT_CLOCK_AUDIO;
+  /* Set the DFSDM clock OUT audio frequency configuration */
+  hAudioIn.hDfsdmLeftChannel.Init.OutputClock.Divider      = DFSDMClockDivider(AudioFreq);
+  hAudioIn.hDfsdmLeftChannel.Init.Input.Multiplexer        = DFSDM_CHANNEL_EXTERNAL_INPUTS;
+  hAudioIn.hDfsdmLeftChannel.Init.Input.DataPacking        = DFSDM_CHANNEL_STANDARD_MODE;
+  hAudioIn.hDfsdmLeftChannel.Init.Input.Pins               = DFSDM_CHANNEL_SAME_CHANNEL_PINS;
+  /* Request to sample stable data for LEFT micro on Rising edge */
+  hAudioIn.hDfsdmLeftChannel.Init.SerialInterface.Type     = DFSDM_CHANNEL_SPI_RISING;
+  hAudioIn.hDfsdmLeftChannel.Init.SerialInterface.SpiClock = DFSDM_CHANNEL_SPI_CLOCK_INTERNAL;
+  hAudioIn.hDfsdmLeftChannel.Init.Awd.FilterOrder          = DFSDM_CHANNEL_SINC1_ORDER;
+  hAudioIn.hDfsdmLeftChannel.Init.Awd.Oversampling         = 10;
+  hAudioIn.hDfsdmLeftChannel.Init.Offset                   = 0;
+  hAudioIn.hDfsdmLeftChannel.Init.RightBitShift            = DFSDMRightBitShift(AudioFreq);
+
+  hAudioIn.hDfsdmLeftChannel.Instance                      = DFSDM_Channel2;
+
+    /* Init the DFSDM Channel */
+  if (HAL_DFSDM_ChannelInit(&hAudioIn.hDfsdmLeftChannel) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+
+  /*####FILTER 0####*/
+  BSP_AUDIO_hDfsdmLeftFilter.Init.RegularParam.Trigger         = DFSDM_FILTER_SW_TRIGGER;
+  BSP_AUDIO_hDfsdmLeftFilter.Init.RegularParam.FastMode        = ENABLE;
+  BSP_AUDIO_hDfsdmLeftFilter.Init.RegularParam.DmaMode         = ENABLE;
+  BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.Trigger        = DFSDM_FILTER_SW_TRIGGER;
+  BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.ScanMode       = DISABLE;
+  BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.DmaMode        = DISABLE;
+  BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.ExtTrigger     = DFSDM_FILTER_EXT_TRIG_TIM8_TRGO;
+  BSP_AUDIO_hDfsdmLeftFilter.Init.InjectedParam.ExtTriggerEdge = DFSDM_FILTER_EXT_TRIG_BOTH_EDGES;
+  BSP_AUDIO_hDfsdmLeftFilter.Init.FilterParam.SincOrder        = DFSDMFilterOrder(AudioFreq);
+  /* Set the DFSDM Filters Oversampling to have correct sample rate */
+  BSP_AUDIO_hDfsdmLeftFilter.Init.FilterParam.Oversampling     = DFSDMOverSampling(AudioFreq);
+  BSP_AUDIO_hDfsdmLeftFilter.Init.FilterParam.IntOversampling  = 1;
+  
+  BSP_AUDIO_hDfsdmLeftFilter.Instance                          = AUDIO_DFSDMx_LEFT_FILTER;
+
+    /* Init the DFSDM Filter */
+  if (HAL_DFSDM_FilterInit(&BSP_AUDIO_hDfsdmLeftFilter) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+  
+  /* Configure regular channel */
+  if (HAL_DFSDM_FilterConfigRegChannel(&BSP_AUDIO_hDfsdmLeftFilter, 
+                                      DFSDM_CHANNEL_2, 
+                                      DFSDM_CONTINUOUS_CONV_ON) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+
+  return AUDIO_OK;
+}
+
+/**
+  * @brief  De-initializes the Digital Filter for Sigma-Delta Modulators interface (DFSDM).
+  * @retval BSP AUDIO status
+  */
+static uint8_t AUDIO_DFSDMx_DeInit(void)
+{
+  /* De-initializes the DFSDM filters to allow access to DFSDM internal registers */
+  if (HAL_DFSDM_FilterDeInit(&BSP_AUDIO_hDfsdmLeftFilter) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+
+  /* De-initializes the DFSDM channels to allow access to DFSDM internal registers */
+  if (HAL_DFSDM_ChannelDeInit(&hAudioIn.hDfsdmLeftChannel) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }
+
+  /* Disable DFSDM clock */
+  AUDIO_DFSDMx_CLK_DISABLE();
+
+  /* Disable SAIx PLL */
+  if (AUDIO_SAIx_PLL_DISABLE() != AUDIO_OK)
+  {
+    return AUDIO_ERROR;
+  }  
+
+  /* DFSDM reset */
+  __HAL_RCC_DFSDM_FORCE_RESET();
+  __HAL_RCC_DFSDM_RELEASE_RESET();
+
+  return AUDIO_OK;
+}
+
+/**
+  * @brief  Initializes the DFSDM channel MSP.
+  * @param  hdfsdm_channel : DFSDM channel handle.
+  * @retval None
+  */
+void HAL_DFSDM_ChannelMspInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
+{
+  GPIO_InitTypeDef  GPIO_InitStruct;  
+
+  /* Enable DFSDM clock */
+  AUDIO_DFSDMx_CLK_ENABLE();
+  
+  /* Enable GPIO clock */
+  AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_CLK_ENABLE();
+  
+  /* DFSDM pins configuration: DFSDM_CKOUT, DMIC_DATIN pins ------------------*/
+  GPIO_InitStruct.Pin = AUDIO_DFSDMx_CKOUT_PIN | AUDIO_DFSDMx_DMIC_DATIN_PIN;
+  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  GPIO_InitStruct.Speed = GPIO_SPEED_HIGH;
+  GPIO_InitStruct.Alternate = AUDIO_DFSDMx_CKOUT_DMIC_DATIN_AF;
+  HAL_GPIO_Init(AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_PORT, &GPIO_InitStruct);
+}
+
+/**
+  * @brief  De-initializes the DFSDM channel MSP.
+  * @param  hdfsdm_channel : DFSDM channel handle.
+  * @retval None
+  */
+void HAL_DFSDM_ChannelMspDeInit(DFSDM_Channel_HandleTypeDef *hdfsdm_channel)
+{
+  GPIO_InitTypeDef  GPIO_InitStruct;
+  
+  /* Enable GPIO clock */
+  AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_CLK_ENABLE();
+  
+  /* DFSDM pins configuration: DFSDM_CKOUT */
+  GPIO_InitStruct.Pin = AUDIO_DFSDMx_CKOUT_PIN;
+  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
+  GPIO_InitStruct.Pull = GPIO_NOPULL;
+  GPIO_InitStruct.Speed = GPIO_SPEED_LOW;
+  HAL_GPIO_Init(AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_PORT, &GPIO_InitStruct);
+  HAL_GPIO_WritePin(AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_PORT, AUDIO_DFSDMx_CKOUT_PIN, GPIO_PIN_RESET);
+
+
+  /* De-initialize DMIC_DATIN pin */
+  HAL_GPIO_DeInit(AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_PORT, AUDIO_DFSDMx_DMIC_DATIN_PIN);
+}
+
+/**
+  * @brief  Initializes the DFSDM filter MSP.
+  * @param  hdfsdm_filter : DFSDM filter handle.
+  * @retval None
+  */
+void HAL_DFSDM_FilterMspInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
+{
+  /* Enable DFSDM clock */
+  AUDIO_DFSDMx_CLK_ENABLE();
+  
+  /* Enable the DMA clock */
+  AUDIO_DFSDMx_DMAx_CLK_ENABLE();
+    
+  /* Configure the hAudioIn.hDmaDfsdmLeft handle parameters */   
+  hAudioIn.hDmaDfsdmLeft.Init.Request             = DMA_REQUEST_0;
+  hAudioIn.hDmaDfsdmLeft.Init.Direction           = DMA_PERIPH_TO_MEMORY;
+  hAudioIn.hDmaDfsdmLeft.Init.PeriphInc           = DMA_PINC_DISABLE;
+  hAudioIn.hDmaDfsdmLeft.Init.MemInc              = DMA_MINC_ENABLE;
+  hAudioIn.hDmaDfsdmLeft.Init.PeriphDataAlignment = AUDIO_DFSDMx_DMAx_PERIPH_DATA_SIZE;
+  hAudioIn.hDmaDfsdmLeft.Init.MemDataAlignment    = AUDIO_DFSDMx_DMAx_MEM_DATA_SIZE;
+  hAudioIn.hDmaDfsdmLeft.Init.Mode                = DMA_CIRCULAR;
+  hAudioIn.hDmaDfsdmLeft.Init.Priority            = DMA_PRIORITY_HIGH;
+
+  hAudioIn.hDmaDfsdmLeft.Instance               = AUDIO_DFSDMx_DMAx_LEFT_CHANNEL;
+  
+  /* Associate the DMA handle */
+  __HAL_LINKDMA(hdfsdm_filter, hdmaReg, hAudioIn.hDmaDfsdmLeft);
+  
+  /* Reset DMA handle state */
+  __HAL_DMA_RESET_HANDLE_STATE(&hAudioIn.hDmaDfsdmLeft);
+
+  /* Configure the DMA Channel */
+  HAL_DMA_Init(&hAudioIn.hDmaDfsdmLeft);      
+
+  /* DMA IRQ Channel configuration */
+    HAL_NVIC_SetPriority(AUDIO_DFSDMx_DMAx_LEFT_IRQ, AUDIO_OUT_IRQ_PREPRIO, 0);
+    HAL_NVIC_EnableIRQ(AUDIO_DFSDMx_DMAx_LEFT_IRQ);
+  }
+
+ /**
+  * @brief  De-initializes the DFSDM filter MSP.
+  * @param  hdfsdm_filter : DFSDM filter handle.
+  * @retval None
+  */
+void HAL_DFSDM_FilterMspDeInit(DFSDM_Filter_HandleTypeDef *hdfsdm_filter)
+{
+  /* Disable DMA  Channel IRQ */
+  HAL_NVIC_DisableIRQ(AUDIO_DFSDMx_DMAx_LEFT_IRQ);
+
+  /* De-initialize the DMA Channel */
+  HAL_DMA_DeInit(&hAudioIn.hDmaDfsdmLeft);      
+
+  /* Disable the DMA clock */
+  AUDIO_DFSDMx_DMAx_CLK_DISABLE();
+}
+
+/**
+  * @brief  Configures the SAI PLL clock according to the required audio frequency.
+  * @param  Frequency: Audio frequency.  
+  * @retval BSP AUDIO status
+  * @note   The SAI PLL input clock must be configured in the user application.
+  *         The SAI PLL configuration done within this function assumes that
+  *         the SAI PLL input clock runs at 8 MHz.
+  */
+static uint8_t AUDIO_SAIPLLConfig(uint32_t Frequency)
+{
+  RCC_PeriphCLKInitTypeDef RCC_ExCLKInitStruct;
+
+  /* Retreive actual RCC configuration */
+  HAL_RCCEx_GetPeriphCLKConfig(&RCC_ExCLKInitStruct);
+  
+    if (   (Frequency == AUDIO_FREQUENCY_11K) 
+        || (Frequency == AUDIO_FREQUENCY_22K)
+        || (Frequency == AUDIO_FREQUENCY_44K) )
+  {
+    /* Configure PLLSAI prescalers */
+    /* SAI clock config 
+    PLLSAI1_VCO= 8 Mhz * PLLSAI1N = 8 * 24 = VCO_192M 
+    SAI_CK_x = PLLSAI1_VCO/PLLSAI1P = 192/17 = 11.294 Mhz */  
+    RCC_ExCLKInitStruct.PeriphClockSelection    = RCC_PERIPHCLK_SAI1;
+    RCC_ExCLKInitStruct.PLLSAI1.PLLSAI1N        = 24; 
+    RCC_ExCLKInitStruct.PLLSAI1.PLLSAI1P        = 17; 
+    RCC_ExCLKInitStruct.PLLSAI1.PLLSAI1ClockOut = RCC_PLLSAI1_SAI1CLK;
+    RCC_ExCLKInitStruct.Sai1ClockSelection      = RCC_SAI1CLKSOURCE_PLLSAI1;
+  }
+  else /* AUDIO_FREQUENCY_8K, AUDIO_FREQUENCY_16K, AUDIO_FREQUENCY_48K, AUDIO_FREQUENCY_96K */
+  {
+    /* SAI clock config 
+    PLLSAI1_VCO= 8 Mhz * PLLSAI1N = 8 * 43 = VCO_344M 
+    SAI_CK_x = PLLSAI1_VCO/PLLSAI1P = 344/7 = 49.142 Mhz */  
+    RCC_ExCLKInitStruct.PeriphClockSelection    = RCC_PERIPHCLK_SAI1;
+    RCC_ExCLKInitStruct.PLLSAI1.PLLSAI1N        = 43;
+    RCC_ExCLKInitStruct.PLLSAI1.PLLSAI1P        = 7;
+    RCC_ExCLKInitStruct.PLLSAI1.PLLSAI1ClockOut = RCC_PLLSAI1_SAI1CLK;
+    RCC_ExCLKInitStruct.Sai1ClockSelection      = RCC_SAI1CLKSOURCE_PLLSAI1;
+  }
+  
+  if (HAL_RCCEx_PeriphCLKConfig(&RCC_ExCLKInitStruct) != HAL_OK)
+  {
+    return AUDIO_ERROR;
+  }    
+
+  return AUDIO_OK;
+}
+
+
+/**
+  * @brief Callback function invoked when half of the PCM samples have been 
+  *        DM Atransfered from the DFSDM channel.
+  * @param  None
+  * @retval None
+  */
+void AudioRecord_TransferComplete_CallBack(void)
+{
+  /* Toggle green LED */
+//  myled = !myled;
+  
+  RecordBufferOffset = BUFFER_OFFSET_FULL;
+}
+
+/**
+  * @brief Callback function invoked when all the PCM samples have been 
+  *        DMA transfered from the DFSDM channel.
+  * @param  None
+  * @retval None
+  */
+void AudioRecord_HalfTransfer_CallBack(void)
+{
+//  RecordBufferOffset = BUFFER_OFFSET_HALF;
+}
+
+/**
+  * @brief Callback function invoked when an error occured durint he DMA 
+  *        transfer of the PCM samples from the DFSDM channel.
+  * @param  None
+  * @retval None
+  */
+void AudioRecord_Error_CallBack(void)
+{
+  pc.printf("ERROR\r\n");
+  /* Stop the program with an infinite loop */
+//  Error_Handler();
+}
+
+
+
+//uint16_t getDMAState(void)
+//{
+//    return HAL_DMA_GetState(hAudioInSPI.hdmarx);    
+//}
+//
+//
+//uint16_t getSPIState(void)
+//{
+//    return HAL_SPI_GetState(&hAudioInSPI);  
+//}
+//
+//
+//bool getSPIFlagStatus(uint16_t flag)
+//{
+//    return __HAL_SPI_GET_FLAG(&hAudioInSPI, flag);  
+//}
+
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32l476g_discovery_audio.h	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,297 @@
+/**
+  ******************************************************************************
+  * @file    stm32l476g_discovery_audio.h
+  * @author  MCD Application Team
+  * @version V1.0.1
+  * @date    16-September-2015
+  * @brief   This file contains the common defines and functions prototypes for
+  *          the stm32l476g_discovery_audio.c driver.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. 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.
+  *   3. Neither the name of STMicroelectronics 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 HOLDER 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.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32L476G_DISCOVERY_AUDIO_H
+#define __STM32L476G_DISCOVERY_AUDIO_H
+
+
+/* Includes ------------------------------------------------------------------*/
+
+#include <string.h>
+#include <stdlib.h>
+#include "mbed.h"
+#include "main.h"
+/* Include audio component Driver */
+
+//#include "stm32l476g_discovery.h"
+
+/** @addtogroup BSP
+  * @{
+  */ 
+
+/** @addtogroup STM32L476G_DISCOVERY
+  * @{
+  */
+
+/** @addtogroup STM32L476G_DISCOVERY_AUDIO
+  * @{
+  */
+
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Exported_Types Exported Types
+  * @{
+  */
+typedef void (*Audio_CallbackTypeDef)(void);
+
+/**
+  * @}
+  */
+
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Exported_Constants Exported Constants
+  * @{
+  */
+/** @defgroup BSP_Audio_Out_Option BSP Audio Out Option
+  * @{
+  */
+#define BSP_AUDIO_OUT_CIRCULARMODE      ((uint32_t)0x00000001) /* BUFFER CIRCULAR MODE */
+#define BSP_AUDIO_OUT_NORMALMODE        ((uint32_t)0x00000002) /* BUFFER NORMAL MODE   */
+#define BSP_AUDIO_OUT_STEREOMODE        ((uint32_t)0x00000004) /* STEREO MODE          */
+#define BSP_AUDIO_OUT_MONOMODE          ((uint32_t)0x00000008) /* MONO MODE            */
+/**
+  * @}
+  */
+ 
+/** @defgroup BSP_Audio_Sample_Rate BSP Audio Sample Rate
+  * @{
+  */
+#define BSP_AUDIO_FREQUENCY_96K         SAI_AUDIO_FREQUENCY_96K
+#define BSP_AUDIO_FREQUENCY_48K         SAI_AUDIO_FREQUENCY_48K
+#define BSP_AUDIO_FREQUENCY_44K         SAI_AUDIO_FREQUENCY_44K
+#define BSP_AUDIO_FREQUENCY_32K         SAI_AUDIO_FREQUENCY_32K
+#define BSP_AUDIO_FREQUENCY_22K         SAI_AUDIO_FREQUENCY_22K
+#define BSP_AUDIO_FREQUENCY_16K         SAI_AUDIO_FREQUENCY_16K
+#define BSP_AUDIO_FREQUENCY_11K         SAI_AUDIO_FREQUENCY_11K
+#define BSP_AUDIO_FREQUENCY_8K          SAI_AUDIO_FREQUENCY_8K
+/**
+  * @}
+  */
+  
+/* AUDIO FREQUENCY */
+#define AUDIO_FREQUENCY_192K          ((uint32_t)192000)
+#define AUDIO_FREQUENCY_96K           ((uint32_t)96000)
+#define AUDIO_FREQUENCY_48K           ((uint32_t)48000)
+#define AUDIO_FREQUENCY_44K           ((uint32_t)44100)
+#define AUDIO_FREQUENCY_32K           ((uint32_t)32000)
+#define AUDIO_FREQUENCY_22K           ((uint32_t)22050)
+#define AUDIO_FREQUENCY_16K           ((uint32_t)16000)
+#define AUDIO_FREQUENCY_11K           ((uint32_t)11025)
+#define AUDIO_FREQUENCY_8K            ((uint32_t)8000)  
+  
+/*------------------------------------------------------------------------------
+                          USER SAI defines parameters
+ -----------------------------------------------------------------------------*/
+/* SAI peripheral configuration defines */
+#define AUDIO_SAIx                             SAI1_Block_A
+#define AUDIO_SAIx_CLK_ENABLE()                __HAL_RCC_SAI1_CLK_ENABLE()
+#define AUDIO_SAIx_CLK_DISABLE()               __HAL_RCC_SAI1_CLK_DISABLE()
+#define AUDIO_SAIx_MCK_SCK_SD_FS_AF            GPIO_AF13_SAI1
+
+#define AUDIO_SAIx_MCK_SCK_SD_FS_ENABLE()      __HAL_RCC_GPIOE_CLK_ENABLE()
+#define AUDIO_SAIx_MCK_SCK_SD_FS_DISABLE()     __HAL_RCC_GPIOE_CLK_DISABLE()
+#define AUDIO_SAIx_FS_PIN                      GPIO_PIN_4
+#define AUDIO_SAIx_SCK_PIN                     GPIO_PIN_5
+#define AUDIO_SAIx_SD_PIN                      GPIO_PIN_6
+#define AUDIO_SAIx_MCK_PIN                     GPIO_PIN_2
+#define AUDIO_SAIx_MCK_SCK_SD_FS_GPIO_PORT     GPIOE
+
+/* SAI DMA Channel definitions */
+#define AUDIO_SAIx_DMAx_CLK_ENABLE()         __HAL_RCC_DMA2_CLK_ENABLE()
+#define AUDIO_SAIx_DMAx_CLK_DISABLE()        __HAL_RCC_DMA2_CLK_DISABLE()
+#define AUDIO_SAIx_DMAx_CHANNEL              DMA2_Channel1
+#define AUDIO_SAIx_DMAx_IRQ                  DMA2_Channel1_IRQn
+#define AUDIO_SAIx_DMAx_PERIPH_DATA_SIZE     DMA_PDATAALIGN_HALFWORD
+#define AUDIO_SAIx_DMAx_MEM_DATA_SIZE        DMA_MDATAALIGN_HALFWORD
+#define DMA_MAX_SZE                          (uint32_t)0xFFFF
+   
+#define AUDIO_SAIx_DMAx_IRQHandler           DMA2_Channel1_IRQHandler
+
+/* Select the interrupt preemption priority for the DMA interrupt */
+#define AUDIO_OUT_IRQ_PREPRIO           5   /* Select the preemption priority level(0 is the highest) */   
+
+/* Disable SAIx PLL */
+#define AUDIO_SAIx_PLL_DISABLE()             HAL_RCCEx_DisablePLLSAI1()
+
+/*------------------------------------------------------------------------------
+                        AUDIO IN CONFIGURATION
+------------------------------------------------------------------------------*/
+/* DFSDM Configuration defines */
+#define AUDIO_DFSDMx_LEFT_CHANNEL                       DFSDM_Channel2
+#define AUDIO_DFSDMx_LEFT_FILTER                        DFSDM_Filter0
+#define AUDIO_DFSDMx_CLK_ENABLE()                       __HAL_RCC_DFSDM_CLK_ENABLE()
+#define AUDIO_DFSDMx_CLK_DISABLE()                       __HAL_RCC_DFSDM_CLK_DISABLE()
+#define AUDIO_DFSDMx_CKOUT_PIN                          GPIO_PIN_9
+#define AUDIO_DFSDMx_DMIC_DATIN_PIN                     GPIO_PIN_7
+#define AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_PORT         GPIOE
+#define AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_CLK_ENABLE() __HAL_RCC_GPIOE_CLK_ENABLE()
+#define AUDIO_DFSDMx_CKOUT_DMIC_DATIN_GPIO_CLK_DISABLE() __HAL_RCC_GPIOE_CLK_DISABLE()
+#define AUDIO_DFSDMx_CKOUT_DMIC_DATIN_AF                GPIO_AF6_DFSDM
+
+/* DFSDM DMA Right and Left channels definitions */
+#define AUDIO_DFSDMx_DMAx_CLK_ENABLE()                  __HAL_RCC_DMA1_CLK_ENABLE()
+#define AUDIO_DFSDMx_DMAx_CLK_DISABLE()                 __HAL_RCC_DMA1_CLK_DISABLE()
+#define AUDIO_DFSDMx_DMAx_LEFT_CHANNEL                  DMA1_Channel4
+#define AUDIO_DFSDMx_DMAx_LEFT_IRQ                      DMA1_Channel4_IRQn
+#define AUDIO_DFSDMx_DMAx_PERIPH_DATA_SIZE              DMA_PDATAALIGN_WORD
+#define AUDIO_DFSDMx_DMAx_MEM_DATA_SIZE                 DMA_MDATAALIGN_WORD
+   
+#define AUDIO_DFSDM_DMAx_LEFT_IRQHandler                DMA1_Channel4_IRQHandler
+  
+/* Select the interrupt preemption priority and subpriority for the IT/DMA interrupt */
+#define AUDIO_IN_IRQ_PREPRIO                6   /* Select the preemption priority level(0 is the highest) */
+
+/*------------------------------------------------------------------------------
+             CONFIGURATION: Audio Driver Configuration parameters
+------------------------------------------------------------------------------*/
+
+#define AUDIODATA_SIZE                      2   /* 16-bits audio data size */
+
+/* Audio status definition */     
+#define AUDIO_OK                            0
+#define AUDIO_ERROR                         1
+#define AUDIO_TIMEOUT                       2
+
+/* AudioFreq * DataSize (2 bytes) * NumChannels (Stereo: 2) */
+#define DEFAULT_AUDIO_IN_FREQ               BSP_AUDIO_FREQUENCY_16K
+#define DEFAULT_AUDIO_IN_BIT_RESOLUTION     16
+#define DEFAULT_AUDIO_IN_CHANNEL_NBR        1 /* Mono = 1, Stereo = 2 */
+#define DEFAULT_AUDIO_IN_VOLUME             64
+
+/*------------------------------------------------------------------------------
+                    OPTIONAL Configuration defines parameters
+------------------------------------------------------------------------------*/
+
+/* Delay for the Codec to be correctly reset */
+#define CODEC_RESET_DELAY           5
+
+typedef enum
+{
+  BUFFER_OFFSET_NONE = 0,
+  BUFFER_OFFSET_HALF,
+  BUFFER_OFFSET_FULL,
+ } RecordBufferOffset_Typedef;
+
+
+/**
+  * @}
+  */
+ 
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Exported_Variables Exported Variables
+  * @{
+  */
+extern SAI_HandleTypeDef          BSP_AUDIO_hSai;
+extern DFSDM_Filter_HandleTypeDef BSP_AUDIO_hDfsdmLeftFilter;
+
+
+extern RecordBufferOffset_Typedef  RecordBufferOffset;
+
+ /**
+  * @}
+  */
+   
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Exported_Macros Exported Macros
+  * @{
+  */
+#define DMA_MAX(_X_)                (((_X_) <= DMA_MAX_SZE)? (_X_):DMA_MAX_SZE)
+
+/**
+  * @}
+  */
+
+/* Exported functions --------------------------------------------------------*/
+/** @defgroup STM32L476G_DISCOVERY_AUDIO_Exported_Functions Exported Functions
+  * @{
+  */
+uint8_t BSP_AUDIO_OUT_Init(uint16_t OutputDevice, uint8_t Volume, uint32_t AudioFreq);
+uint8_t BSP_AUDIO_OUT_DeInit(void);
+uint8_t BSP_AUDIO_OUT_Play(uint16_t* pData, uint32_t Size);
+uint8_t BSP_AUDIO_OUT_ChangeBuffer(uint16_t *pData, uint16_t Size);
+uint8_t BSP_AUDIO_OUT_Pause(void);
+uint8_t BSP_AUDIO_OUT_Resume(void);
+uint8_t BSP_AUDIO_OUT_Stop(uint32_t Option);
+uint8_t BSP_AUDIO_OUT_SetVolume(uint8_t Volume);
+uint8_t BSP_AUDIO_OUT_SetFrequency(uint32_t AudioFreq);
+void    BSP_AUDIO_OUT_ChangeAudioConfig(uint32_t AudioOutOption);
+uint8_t BSP_AUDIO_OUT_SetMute(uint32_t Cmd);
+uint8_t BSP_AUDIO_OUT_SetOutputMode(uint8_t Output);
+void    BSP_AUDIO_OUT_RegisterCallbacks(Audio_CallbackTypeDef ErrorCallback, 
+                                        Audio_CallbackTypeDef HalfTransferCallback, 
+                                        Audio_CallbackTypeDef TransferCompleteCallback);
+
+uint8_t BSP_AUDIO_IN_Init(uint32_t AudioFreq, uint32_t BitRes, uint32_t ChnlNbr);
+uint8_t BSP_AUDIO_IN_DeInit(void);
+uint8_t BSP_AUDIO_IN_Record(uint16_t *pData, uint32_t Size);
+uint8_t BSP_AUDIO_IN_SetFrequency(uint32_t AudioFreq);
+uint8_t BSP_AUDIO_IN_Stop(void);
+uint8_t BSP_AUDIO_IN_Pause(void);
+uint8_t BSP_AUDIO_IN_Resume(void);
+void    BSP_AUDIO_IN_RegisterCallbacks(Audio_CallbackTypeDef ErrorCallback, 
+                                       Audio_CallbackTypeDef HalfTransferCallback, 
+                                       Audio_CallbackTypeDef TransferCompleteCallback);
+                                       
+                                       
+/* Audio recorder callback functions */
+static void AudioRecord_TransferComplete_CallBack(void);
+static void AudioRecord_HalfTransfer_CallBack(void);
+static void AudioRecord_Error_CallBack(void);
+
+//  uint16_t getDMAState(void);
+//  uint16_t getSPIState(void);
+//  bool getSPIFlagStatus(uint16_t flag);
+                                       
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+
+#endif /* __STM32L476G_DISCOVERY_AUDIO_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32l4xx_it.cpp	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,200 @@
+/**
+  ******************************************************************************
+  * @file    DFSDM/DFSDM_AudioRecord/Src/stm32l4xx_it.c
+  * @author  MCD Application Team
+  * @version V1.1.0
+  * @date    16-September-2015
+  * @brief   Main Interrupt Service Routines.
+  *          This file provides template for all exceptions handler and 
+  *          peripherals interrupt service routine.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. 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.
+  *   3. Neither the name of STMicroelectronics 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 HOLDER 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.
+  *
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "main.h"
+#include "stm32l4xx_it.h"
+
+/** @addtogroup STM32L4xx_HAL_Examples
+  * @{
+  */
+
+/** @addtogroup DFSDM_AudioRecord
+  * @{
+  */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+//hAudioIn.hDmaDfsdmLeft
+extern DMA_HandleTypeDef hDmaSai;
+extern SAI_HandleTypeDef BSP_AUDIO_hSai;
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/******************************************************************************/
+/*            Cortex-M4 Processor Exceptions Handlers                         */
+/******************************************************************************/
+
+/**
+  * @brief   This function handles NMI exception.
+  * @param  None
+  * @retval None
+  */
+void NMI_Handler(void)
+{
+}
+
+/**
+  * @brief  This function handles Hard Fault exception.
+  * @param  None
+  * @retval None
+  */
+void HardFault_Handler(void)
+{
+  /* Go to infinite loop when Hard Fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  This function handles Memory Manage exception.
+  * @param  None
+  * @retval None
+  */
+void MemManage_Handler(void)
+{
+  /* Go to infinite loop when Memory Manage exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  This function handles Bus Fault exception.
+  * @param  None
+  * @retval None
+  */
+void BusFault_Handler(void)
+{
+  /* Go to infinite loop when Bus Fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  This function handles Usage Fault exception.
+  * @param  None
+  * @retval None
+  */
+void UsageFault_Handler(void)
+{
+  /* Go to infinite loop when Usage Fault exception occurs */
+  while (1)
+  {
+  }
+}
+
+/**
+  * @brief  This function handles SVCall exception.
+  * @param  None
+  * @retval None
+  */
+void SVC_Handler(void)
+{
+}
+
+/**
+  * @brief  This function handles Debug Monitor exception.
+  * @param  None
+  * @retval None
+  */
+void DebugMon_Handler(void)
+{
+}
+
+/**
+  * @brief  This function handles PendSVC exception.
+  * @param  None
+  * @retval None
+  */
+void PendSV_Handler(void)
+{
+}
+
+/**
+  * @brief  This function handles SysTick Handler.
+  * @param  None
+  * @retval None
+  */
+void SysTick_Handler(void)
+{
+  HAL_IncTick();
+}
+
+/******************************************************************************/
+/*                 STM32L4xx Peripherals Interrupt Handlers                   */
+/*  Add here the Interrupt Handler for the used peripheral(s) (PPP), for the  */
+/*  available peripheral interrupt handler's name please refer to the startup */
+/*  file (startup_stm32l4xx.s).                                               */
+/******************************************************************************/
+
+/**
+  * @brief  This function handles DMA1_Channel4 interrupt request.
+  * @param  None
+  * @retval None
+  */
+void DMA1_Channel4_IRQHandler(void)
+{
+  HAL_DMA_IRQHandler(&hDmaSai);
+}
+
+/**
+  * @brief  This function handles SAI DMA interrupt request.
+  * @param  None
+  * @retval None
+  */
+void DMA2_Channel1_IRQHandler(void)
+{ 
+  HAL_DMA_IRQHandler(BSP_AUDIO_hSai.hdmatx);
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/stm32l4xx_it.h	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,72 @@
+/**
+  ******************************************************************************
+  * @file    DFSDM/DFSDM_AudioRecord/Inc/stm32l4xx_it.h
+  * @author  MCD Application Team
+  * @version V1.1.0
+  * @date    16-September-2015
+  * @brief   This file contains the headers of the interrupt handlers.
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
+  *
+  * Redistribution and use in source and binary forms, with or without modification,
+  * are permitted provided that the following conditions are met:
+  *   1. Redistributions of source code must retain the above copyright notice,
+  *      this list of conditions and the following disclaimer.
+  *   2. 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.
+  *   3. Neither the name of STMicroelectronics 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 HOLDER 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.
+  *
+  ******************************************************************************
+  */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __STM32L4xx_IT_H
+#define __STM32L4xx_IT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* Includes ------------------------------------------------------------------*/
+/* Exported types ------------------------------------------------------------*/
+/* Exported constants --------------------------------------------------------*/
+/* Exported macro ------------------------------------------------------------*/
+/* Exported functions ------------------------------------------------------- */
+
+void NMI_Handler(void);
+void HardFault_Handler(void);
+void MemManage_Handler(void);
+void BusFault_Handler(void);
+void UsageFault_Handler(void);
+void SVC_Handler(void);
+void DebugMon_Handler(void);
+void PendSV_Handler(void);
+void SysTick_Handler(void);
+
+void DMA1_Channel4_IRQHandler(void);
+void DMA2_Channel1_IRQHandler(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __STM32L4xx_IT_H */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wavfile.lib	Sun Dec 13 16:46:14 2015 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/teams/Senior-Design-Sound-Monitor/code/wavfile/#f3461496d048