diff options
| author | joshua <joshua@joshuayun.com> | 2023-12-30 23:54:31 -0500 |
|---|---|---|
| committer | joshua <joshua@joshuayun.com> | 2023-12-30 23:54:31 -0500 |
| commit | 86608c6770cf08c138a2bdab5855072f64be09ef (patch) | |
| tree | 494a61b3ef37e76f9235a0d10f5c93d97290a35f /Drivers/CMSIS/DSP/PythonWrapper/cmsisdsp_pkg/src/fftinit.c | |
| download | sdr-software-master.tar.gz | |
Diffstat (limited to 'Drivers/CMSIS/DSP/PythonWrapper/cmsisdsp_pkg/src/fftinit.c')
| -rw-r--r-- | Drivers/CMSIS/DSP/PythonWrapper/cmsisdsp_pkg/src/fftinit.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/Drivers/CMSIS/DSP/PythonWrapper/cmsisdsp_pkg/src/fftinit.c b/Drivers/CMSIS/DSP/PythonWrapper/cmsisdsp_pkg/src/fftinit.c new file mode 100644 index 0000000..37e4e0a --- /dev/null +++ b/Drivers/CMSIS/DSP/PythonWrapper/cmsisdsp_pkg/src/fftinit.c @@ -0,0 +1,262 @@ +/* ----------------------------------------------------------------------
+ * Project: CMSIS DSP Python Wrapper
+ * Title: fftinit.c
+ * Description: FFT init functions for the Python wrapper
+ *
+ * $Date: 25. March 2019
+ * $Revision: V0.0.1
+ *
+ * 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"
+#include "arm_const_structs.h"
+
+#define FFTINIT(SIZE) \
+ S->bitRevLength = arm_cfft_sR_f32_len##SIZE.bitRevLength; \
+ S->pBitRevTable = arm_cfft_sR_f32_len##SIZE.pBitRevTable; \
+ S->pTwiddle = arm_cfft_sR_f32_len##SIZE.pTwiddle;
+
+#define FFTFXTINIT(EXT,SIZE) \
+ S->bitRevLength = arm_cfft_sR_##EXT##_len##SIZE.bitRevLength; \
+ S->pBitRevTable = arm_cfft_sR_##EXT##_len##SIZE.pBitRevTable; \
+ S->pTwiddle = arm_cfft_sR_##EXT##_len##SIZE.pTwiddle;
+
+arm_status arm_cfft_init_f32(
+ arm_cfft_instance_f32 * S,
+ uint16_t fftLen)
+{
+ /* Initialise the default arm status */
+ arm_status status = ARM_MATH_SUCCESS;
+
+ /* Initialise the FFT length */
+ S->fftLen = fftLen;
+
+ /* Initialise the Twiddle coefficient pointer */
+ S->pTwiddle = (float32_t *)twiddleCoef_4096;
+
+
+ /* Initializations of Instance structure depending on the FFT length */
+ switch (S->fftLen) {
+ /* Initializations of structure parameters for 4096 point FFT */
+ case 4096U:
+ /* Initialise the bit reversal table modifier */
+ FFTINIT(4096);
+ break;
+
+ /* Initializations of structure parameters for 2048 point FFT */
+ case 2048U:
+ /* Initialise the bit reversal table modifier */
+ FFTINIT(2048);
+
+ break;
+
+ /* Initializations of structure parameters for 1024 point FFT */
+ case 1024U:
+ /* Initialise the bit reversal table modifier */
+ FFTINIT(1024);
+
+ break;
+
+ /* Initializations of structure parameters for 512 point FFT */
+ case 512U:
+ /* Initialise the bit reversal table modifier */
+ FFTINIT(512);
+ break;
+
+ case 256U:
+ FFTINIT(256);
+ break;
+
+ case 128U:
+ FFTINIT(128);
+ break;
+
+ case 64U:
+ FFTINIT(64);
+ break;
+
+ case 32U:
+ FFTINIT(32);
+ break;
+
+ case 16U:
+ /* Initializations of structure parameters for 16 point FFT */
+ FFTINIT(16);
+ break;
+
+
+ default:
+ /* Reporting argument error if fftSize is not valid value */
+ status = ARM_MATH_ARGUMENT_ERROR;
+ break;
+ }
+
+
+ return (status);
+}
+
+arm_status arm_cfft_init_q31(
+ arm_cfft_instance_q31 * S,
+ uint16_t fftLen)
+{
+ /* Initialise the default arm status */
+ arm_status status = ARM_MATH_SUCCESS;
+
+ /* Initialise the FFT length */
+ S->fftLen = fftLen;
+
+ /* Initialise the Twiddle coefficient pointer */
+ S->pTwiddle = (float32_t *)twiddleCoef_4096;
+
+
+ /* Initializations of Instance structure depending on the FFT length */
+ switch (S->fftLen) {
+ /* Initializations of structure parameters for 4096 point FFT */
+ case 4096U:
+ /* Initialise the bit reversal table modifier */
+ FFTFXTINIT(q31,4096);
+ break;
+
+ /* Initializations of structure parameters for 2048 point FFT */
+ case 2048U:
+ /* Initialise the bit reversal table modifier */
+ FFTFXTINIT(q31,2048);
+
+ break;
+
+ /* Initializations of structure parameters for 1024 point FFT */
+ case 1024U:
+ /* Initialise the bit reversal table modifier */
+ FFTFXTINIT(q31,1024);
+
+ break;
+
+ /* Initializations of structure parameters for 512 point FFT */
+ case 512U:
+ /* Initialise the bit reversal table modifier */
+ FFTFXTINIT(q31,512);
+ break;
+
+ case 256U:
+ FFTFXTINIT(q31,256);
+ break;
+
+ case 128U:
+ FFTFXTINIT(q31,128);
+ break;
+
+ case 64U:
+ FFTFXTINIT(q31,64);
+ break;
+
+ case 32U:
+ FFTFXTINIT(q31,32);
+ break;
+
+ case 16U:
+ /* Initializations of structure parameters for 16 point FFT */
+ FFTFXTINIT(q31,16);
+ break;
+
+
+ default:
+ /* Reporting argument error if fftSize is not valid value */
+ status = ARM_MATH_ARGUMENT_ERROR;
+ break;
+ }
+
+
+ return (status);
+}
+
+arm_status arm_cfft_init_q15(
+ arm_cfft_instance_q15 * S,
+ uint16_t fftLen)
+{
+ /* Initialise the default arm status */
+ arm_status status = ARM_MATH_SUCCESS;
+
+ /* Initialise the FFT length */
+ S->fftLen = fftLen;
+
+ /* Initialise the Twiddle coefficient pointer */
+ S->pTwiddle = (float32_t *)twiddleCoef_4096;
+
+
+ /* Initializations of Instance structure depending on the FFT length */
+ switch (S->fftLen) {
+ /* Initializations of structure parameters for 4096 point FFT */
+ case 4096U:
+ /* Initialise the bit reversal table modifier */
+ FFTFXTINIT(q15,4096);
+ break;
+
+ /* Initializations of structure parameters for 2048 point FFT */
+ case 2048U:
+ /* Initialise the bit reversal table modifier */
+ FFTFXTINIT(q15,2048);
+
+ break;
+
+ /* Initializations of structure parameters for 1024 point FFT */
+ case 1024U:
+ /* Initialise the bit reversal table modifier */
+ FFTFXTINIT(q15,1024);
+
+ break;
+
+ /* Initializations of structure parameters for 512 point FFT */
+ case 512U:
+ /* Initialise the bit reversal table modifier */
+ FFTFXTINIT(q15,512);
+ break;
+
+ case 256U:
+ FFTFXTINIT(q15,256);
+ break;
+
+ case 128U:
+ FFTFXTINIT(q15,128);
+ break;
+
+ case 64U:
+ FFTFXTINIT(q15,64);
+ break;
+
+ case 32U:
+ FFTFXTINIT(q15,32);
+ break;
+
+ case 16U:
+ /* Initializations of structure parameters for 16 point FFT */
+ FFTFXTINIT(q15,16);
+ break;
+
+
+ default:
+ /* Reporting argument error if fftSize is not valid value */
+ status = ARM_MATH_ARGUMENT_ERROR;
+ break;
+ }
+
+
+ return (status);
+}
\ No newline at end of file |