diff options
Diffstat (limited to 'Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_fast_init_f32.c')
| -rw-r--r-- | Drivers/CMSIS/DSP/Source/TransformFunctions/arm_rfft_fast_init_f32.c | 344 |
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
+ */
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