From 94f94260ace13688285fc8c62687079b26c18854 Mon Sep 17 00:00:00 2001 From: jaseg Date: Sun, 20 Dec 2020 15:18:02 +0100 Subject: Submodule-cache WIP --- .../arm_biquad_cascade_df2T_init_f32.c | 89 ---------------------- 1 file changed, 89 deletions(-) delete mode 100644 fw/midi-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c (limited to 'fw/midi-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c') diff --git a/fw/midi-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c b/fw/midi-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c deleted file mode 100644 index 6dfc985..0000000 --- a/fw/midi-dials/Drivers/CMSIS/DSP/Source/FilteringFunctions/arm_biquad_cascade_df2T_init_f32.c +++ /dev/null @@ -1,89 +0,0 @@ -/* ---------------------------------------------------------------------- - * Project: CMSIS DSP Library - * Title: arm_biquad_cascade_df2T_init_f32.c - * Description: Initialization function for floating-point transposed direct form II Biquad cascade filter - * - * $Date: 27. January 2017 - * $Revision: V.1.5.1 - * - * Target Processor: Cortex-M cores - * -------------------------------------------------------------------- */ -/* - * Copyright (C) 2010-2017 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" - -/** - * @ingroup groupFilters - */ - -/** - * @addtogroup BiquadCascadeDF2T - * @{ - */ - -/** - * @brief Initialization function for the floating-point transposed direct form II Biquad cascade filter. - * @param[in,out] *S points to an instance of the filter data structure. - * @param[in] numStages number of 2nd order stages in the filter. - * @param[in] *pCoeffs points to the filter coefficients. - * @param[in] *pState points to the state buffer. - * @return none - * - * Coefficient and State Ordering: - * \par - * The coefficients are stored in the array pCoeffs in the following order: - *
- *     {b10, b11, b12, a11, a12, b20, b21, b22, a21, a22, ...}
- * 
- * - * \par - * where b1x and a1x are the coefficients for the first stage, - * b2x and a2x are the coefficients for the second stage, - * and so on. The pCoeffs array contains a total of 5*numStages values. - * - * \par - * The pState is a pointer to state array. - * Each Biquad stage has 2 state variables d1, and d2. - * The 2 state variables for stage 1 are first, then the 2 state variables for stage 2, and so on. - * The state array has a total length of 2*numStages values. - * The state variables are updated after each block of data is processed; the coefficients are untouched. - */ - -void arm_biquad_cascade_df2T_init_f32( - arm_biquad_cascade_df2T_instance_f32 * S, - uint8_t numStages, - float32_t * pCoeffs, - float32_t * pState) -{ - /* Assign filter stages */ - S->numStages = numStages; - - /* Assign coefficient pointer */ - S->pCoeffs = pCoeffs; - - /* Clear state buffer and size is always 2 * numStages */ - memset(pState, 0, (2U * (uint32_t) numStages) * sizeof(float32_t)); - - /* Assign state pointer */ - S->pState = pState; -} - -/** - * @} end of BiquadCascadeDF2T group - */ -- cgit