initial commitHEADmaster

1 files changed, 344 insertions, 0 deletions

diff --git a/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_fast_init_f32.c b/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_fast_init_f32.c
new file mode 100644
index 0000000..ca510cd
--- /dev/null
+++ b/Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_fast_init_f32.c
@@ -0,0 +1,344 @@
+/* ----------------------------------------------------------------------

+ * Project:      CMSIS DSP Library

+ * Title:        arm_cfft_init_f32.c

+ * Description:  Split Radix Decimation in Frequency CFFT Floating point processing function

+ *

+ * $Date:        18. March 2019

+ * $Revision:    V1.6.0

+ *

+ * Target Processor: Cortex-M cores

+ * -------------------------------------------------------------------- */

+/*

+ * Copyright (C) 2010-2019 ARM Limited or its affiliates. All rights reserved.

+ *

+ * SPDX-License-Identifier: Apache-2.0

+ *

+ * Licensed under the Apache License, Version 2.0 (the License); you may

+ * not use this file except in compliance with the License.

+ * You may obtain a copy of the License at

+ *

+ * www.apache.org/licenses/LICENSE-2.0

+ *

+ * Unless required by applicable law or agreed to in writing, software

+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT

+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

+ * See the License for the specific language governing permissions and

+ * limitations under the License.

+ */

+

+#include "arm_math.h"

+#include "arm_common_tables.h"

+

+/**

+  @ingroup groupTransforms

+ */

+

+/**

+  @addtogroup RealFFT

+  @{

+ */

+

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_16) && defined(ARM_TABLE_BITREVIDX_FLT_16) && defined(ARM_TABLE_TWIDDLECOEF_F32_16) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_32))

+

+/**

+  @brief         Initialization function for the 32pt floating-point real FFT.

+  @param[in,out] S  points to an arm_rfft_fast_instance_f32 structure

+  @return        execution status

+                   - \ref ARM_MATH_SUCCESS        : Operation successful

+                   - \ref ARM_MATH_ARGUMENT_ERROR : an error is detected

+ */

+

+arm_status arm_rfft_32_fast_init_f32( arm_rfft_fast_instance_f32 * S ) {

+

+  arm_cfft_instance_f32 * Sint;

+

+  if( !S ) return ARM_MATH_ARGUMENT_ERROR;

+

+  Sint = &(S->Sint);

+  Sint->fftLen = 16U;

+  S->fftLenRFFT = 32U;

+

+  Sint->bitRevLength = ARMBITREVINDEXTABLE_16_TABLE_LENGTH;

+  Sint->pBitRevTable = (uint16_t *)armBitRevIndexTable16;

+  Sint->pTwiddle     = (float32_t *) twiddleCoef_16;

+  S->pTwiddleRFFT    = (float32_t *) twiddleCoef_rfft_32;

+

+  return ARM_MATH_SUCCESS;

+}

+#endif 

+

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_32) && defined(ARM_TABLE_BITREVIDX_FLT_32) && defined(ARM_TABLE_TWIDDLECOEF_F32_32) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_64))

+

+/**

+  @brief         Initialization function for the 64pt floating-point real FFT.

+  @param[in,out] S  points to an arm_rfft_fast_instance_f32 structure

+  @return        execution status

+                   - \ref ARM_MATH_SUCCESS        : Operation successful

+                   - \ref ARM_MATH_ARGUMENT_ERROR : an error is detected

+ */

+

+arm_status arm_rfft_64_fast_init_f32( arm_rfft_fast_instance_f32 * S ) {

+

+  arm_cfft_instance_f32 * Sint;

+

+  if( !S ) return ARM_MATH_ARGUMENT_ERROR;

+

+  Sint = &(S->Sint);

+  Sint->fftLen = 32U;

+  S->fftLenRFFT = 64U;

+

+  Sint->bitRevLength = ARMBITREVINDEXTABLE_32_TABLE_LENGTH;

+  Sint->pBitRevTable = (uint16_t *)armBitRevIndexTable32;

+  Sint->pTwiddle     = (float32_t *) twiddleCoef_32;

+  S->pTwiddleRFFT    = (float32_t *) twiddleCoef_rfft_64;

+

+  return ARM_MATH_SUCCESS;

+}

+#endif 

+

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_64) && defined(ARM_TABLE_BITREVIDX_FLT_64) && defined(ARM_TABLE_TWIDDLECOEF_F32_64) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_128))

+

+/**

+  @brief         Initialization function for the 128pt floating-point real FFT.

+  @param[in,out] S  points to an arm_rfft_fast_instance_f32 structure

+  @return        execution status

+                   - \ref ARM_MATH_SUCCESS        : Operation successful

+                   - \ref ARM_MATH_ARGUMENT_ERROR : an error is detected

+ */

+

+arm_status arm_rfft_128_fast_init_f32( arm_rfft_fast_instance_f32 * S ) {

+

+  arm_cfft_instance_f32 * Sint;

+

+  if( !S ) return ARM_MATH_ARGUMENT_ERROR;

+

+  Sint = &(S->Sint);

+  Sint->fftLen = 64U;

+  S->fftLenRFFT = 128U;

+

+  Sint->bitRevLength = ARMBITREVINDEXTABLE_64_TABLE_LENGTH;

+  Sint->pBitRevTable = (uint16_t *)armBitRevIndexTable64;

+  Sint->pTwiddle     = (float32_t *) twiddleCoef_64;

+  S->pTwiddleRFFT    = (float32_t *) twiddleCoef_rfft_128;

+

+  return ARM_MATH_SUCCESS;

+}

+#endif 

+

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_128) && defined(ARM_TABLE_BITREVIDX_FLT_128) && defined(ARM_TABLE_TWIDDLECOEF_F32_128) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_256))

+

+/**

+  @brief         Initialization function for the 256pt floating-point real FFT.

+  @param[in,out] S  points to an arm_rfft_fast_instance_f32 structure

+  @return        execution status

+                   - \ref ARM_MATH_SUCCESS        : Operation successful

+                   - \ref ARM_MATH_ARGUMENT_ERROR : an error is detected

+*/

+

+arm_status arm_rfft_256_fast_init_f32( arm_rfft_fast_instance_f32 * S ) {

+

+  arm_cfft_instance_f32 * Sint;

+

+  if( !S ) return ARM_MATH_ARGUMENT_ERROR;

+

+  Sint = &(S->Sint);

+  Sint->fftLen = 128U;

+  S->fftLenRFFT = 256U;

+

+  Sint->bitRevLength = ARMBITREVINDEXTABLE_128_TABLE_LENGTH;

+  Sint->pBitRevTable = (uint16_t *)armBitRevIndexTable128;

+  Sint->pTwiddle     = (float32_t *) twiddleCoef_128;

+  S->pTwiddleRFFT    = (float32_t *) twiddleCoef_rfft_256;

+

+  return ARM_MATH_SUCCESS;

+}

+#endif 

+

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_256) && defined(ARM_TABLE_BITREVIDX_FLT_256) && defined(ARM_TABLE_TWIDDLECOEF_F32_256) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_512))

+

+/**

+  @brief         Initialization function for the 512pt floating-point real FFT.

+  @param[in,out] S  points to an arm_rfft_fast_instance_f32 structure

+  @return        execution status

+                   - \ref ARM_MATH_SUCCESS        : Operation successful

+                   - \ref ARM_MATH_ARGUMENT_ERROR : an error is detected

+ */

+

+arm_status arm_rfft_512_fast_init_f32( arm_rfft_fast_instance_f32 * S ) {

+

+  arm_cfft_instance_f32 * Sint;

+

+  if( !S ) return ARM_MATH_ARGUMENT_ERROR;

+

+  Sint = &(S->Sint);

+  Sint->fftLen = 256U;

+  S->fftLenRFFT = 512U;

+

+  Sint->bitRevLength = ARMBITREVINDEXTABLE_256_TABLE_LENGTH;

+  Sint->pBitRevTable = (uint16_t *)armBitRevIndexTable256;

+  Sint->pTwiddle     = (float32_t *) twiddleCoef_256;

+  S->pTwiddleRFFT    = (float32_t *) twiddleCoef_rfft_512;

+

+  return ARM_MATH_SUCCESS;

+}

+#endif 

+

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_512) && defined(ARM_TABLE_BITREVIDX_FLT_512) && defined(ARM_TABLE_TWIDDLECOEF_F32_512) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_1024))

+/**

+  @brief         Initialization function for the 1024pt floating-point real FFT.

+  @param[in,out] S  points to an arm_rfft_fast_instance_f32 structure

+  @return        execution status

+                   - \ref ARM_MATH_SUCCESS        : Operation successful

+                   - \ref ARM_MATH_ARGUMENT_ERROR : an error is detected

+ */

+

+arm_status arm_rfft_1024_fast_init_f32( arm_rfft_fast_instance_f32 * S ) {

+

+  arm_cfft_instance_f32 * Sint;

+

+  if( !S ) return ARM_MATH_ARGUMENT_ERROR;

+

+  Sint = &(S->Sint);

+  Sint->fftLen = 512U;

+  S->fftLenRFFT = 1024U;

+

+  Sint->bitRevLength = ARMBITREVINDEXTABLE_512_TABLE_LENGTH;

+  Sint->pBitRevTable = (uint16_t *)armBitRevIndexTable512;

+  Sint->pTwiddle     = (float32_t *) twiddleCoef_512;

+  S->pTwiddleRFFT    = (float32_t *) twiddleCoef_rfft_1024;

+

+  return ARM_MATH_SUCCESS;

+}

+#endif

+

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_1024) && defined(ARM_TABLE_BITREVIDX_FLT_1024) && defined(ARM_TABLE_TWIDDLECOEF_F32_1024) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_2048))

+/**

+  @brief         Initialization function for the 2048pt floating-point real FFT.

+  @param[in,out] S  points to an arm_rfft_fast_instance_f32 structure

+  @return        execution status

+                   - \ref ARM_MATH_SUCCESS        : Operation successful

+                   - \ref ARM_MATH_ARGUMENT_ERROR : an error is detected

+ */

+arm_status arm_rfft_2048_fast_init_f32( arm_rfft_fast_instance_f32 * S ) {

+

+  arm_cfft_instance_f32 * Sint;

+

+  if( !S ) return ARM_MATH_ARGUMENT_ERROR;

+

+  Sint = &(S->Sint);

+  Sint->fftLen = 1024U;

+  S->fftLenRFFT = 2048U;

+

+  Sint->bitRevLength = ARMBITREVINDEXTABLE_1024_TABLE_LENGTH;

+  Sint->pBitRevTable = (uint16_t *)armBitRevIndexTable1024;

+  Sint->pTwiddle     = (float32_t *) twiddleCoef_1024;

+  S->pTwiddleRFFT    = (float32_t *) twiddleCoef_rfft_2048;

+

+  return ARM_MATH_SUCCESS;

+}

+#endif

+

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_2048) && defined(ARM_TABLE_BITREVIDX_FLT_2048) && defined(ARM_TABLE_TWIDDLECOEF_F32_2048) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_4096))

+/**

+* @brief         Initialization function for the 4096pt floating-point real FFT.

+* @param[in,out] S  points to an arm_rfft_fast_instance_f32 structure

+  @return        execution status

+                   - \ref ARM_MATH_SUCCESS        : Operation successful

+                   - \ref ARM_MATH_ARGUMENT_ERROR : an error is detected

+ */

+

+arm_status arm_rfft_4096_fast_init_f32( arm_rfft_fast_instance_f32 * S ) {

+

+  arm_cfft_instance_f32 * Sint;

+

+  if( !S ) return ARM_MATH_ARGUMENT_ERROR;

+

+  Sint = &(S->Sint);

+  Sint->fftLen = 2048U;

+  S->fftLenRFFT = 4096U;

+

+  Sint->bitRevLength = ARMBITREVINDEXTABLE_2048_TABLE_LENGTH;

+  Sint->pBitRevTable = (uint16_t *)armBitRevIndexTable2048;

+  Sint->pTwiddle     = (float32_t *) twiddleCoef_2048;

+  S->pTwiddleRFFT    = (float32_t *) twiddleCoef_rfft_4096;

+

+  return ARM_MATH_SUCCESS;

+}

+#endif 

+

+/**

+  @brief         Initialization function for the floating-point real FFT.

+  @param[in,out] S       points to an arm_rfft_fast_instance_f32 structure

+  @param[in]     fftLen  length of the Real Sequence

+  @return        execution status

+                   - \ref ARM_MATH_SUCCESS        : Operation successful

+                   - \ref ARM_MATH_ARGUMENT_ERROR : <code>fftLen</code> is not a supported length

+

+  @par           Description

+                   The parameter <code>fftLen</code> specifies the length of RFFT/CIFFT process.

+                   Supported FFT Lengths are 32, 64, 128, 256, 512, 1024, 2048, 4096.

+  @par

+                   This Function also initializes Twiddle factor table pointer and Bit reversal table pointer.

+ */

+

+arm_status arm_rfft_fast_init_f32(

+  arm_rfft_fast_instance_f32 * S,

+  uint16_t fftLen)

+{

+  typedef arm_status(*fft_init_ptr)( arm_rfft_fast_instance_f32 *);

+  fft_init_ptr fptr = 0x0;

+

+  switch (fftLen)

+  {

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_2048) && defined(ARM_TABLE_BITREVIDX_FLT_2048) && defined(ARM_TABLE_TWIDDLECOEF_F32_2048) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_4096))

+  case 4096U:

+    fptr = arm_rfft_4096_fast_init_f32;

+    break;

+#endif

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_1024) && defined(ARM_TABLE_BITREVIDX_FLT_1024) && defined(ARM_TABLE_TWIDDLECOEF_F32_1024) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_2048))

+  case 2048U:

+    fptr = arm_rfft_2048_fast_init_f32;

+    break;

+#endif

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_512) && defined(ARM_TABLE_BITREVIDX_FLT_512) && defined(ARM_TABLE_TWIDDLECOEF_F32_512) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_1024))

+  case 1024U:

+    fptr = arm_rfft_1024_fast_init_f32;

+    break;

+#endif

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_256) && defined(ARM_TABLE_BITREVIDX_FLT_256) && defined(ARM_TABLE_TWIDDLECOEF_F32_256) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_512))

+  case 512U:

+    fptr = arm_rfft_512_fast_init_f32;

+    break;

+#endif

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_128) && defined(ARM_TABLE_BITREVIDX_FLT_128) && defined(ARM_TABLE_TWIDDLECOEF_F32_128) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_256))

+  case 256U:

+    fptr = arm_rfft_256_fast_init_f32;

+    break;

+#endif

+#if (defined(ARM_TABLE_TWIDDLECOEF_F32_64) && defined(ARM_TABLE_BITREVIDX_FLT_64) && defined(ARM_TABLE_TWIDDLECOEF_F32_64) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_128))

+  case 128U:

+    fptr = arm_rfft_128_fast_init_f32;

+    break;

+#endif

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_32) && defined(ARM_TABLE_BITREVIDX_FLT_32) && defined(ARM_TABLE_TWIDDLECOEF_F32_32) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_64))

+  case 64U:

+    fptr = arm_rfft_64_fast_init_f32;

+    break;

+#endif

+#if !defined(ARM_DSP_CONFIG_TABLES) || defined(ARM_ALL_FFT_TABLES) || (defined(ARM_TABLE_TWIDDLECOEF_F32_16) && defined(ARM_TABLE_BITREVIDX_FLT_16) && defined(ARM_TABLE_TWIDDLECOEF_F32_16) && defined(ARM_TABLE_TWIDDLECOEF_RFFT_F32_32))

+  case 32U:

+    fptr = arm_rfft_32_fast_init_f32;

+    break;

+#endif

+  default:

+    return ARM_MATH_ARGUMENT_ERROR;

+  }

+

+  if( ! fptr ) return ARM_MATH_ARGUMENT_ERROR;

+  return fptr( S );

+

+}

+

+/**

+  @} end of RealFFT group

+ */