diff options
author | Jack Humbert <jack.humb@gmail.com> | 2016-06-18 14:30:24 -0400 |
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committer | GitHub <noreply@github.com> | 2016-06-18 14:30:24 -0400 |
commit | db32864ce7029d758f57729cc2f75e051a28d0a2 (patch) | |
tree | f3ac60d9c826a9ad5ef5bc4d199efaddae156ba6 /tmk_core/tool/mbed/mbed-sdk/libraries/dsp/cmsis_dsp/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c | |
parent | 1923cffd41d9d71cd9f434092654dba05513137b (diff) |
Cleans up quantum/keymap situation, removes extra lufa folders (#416)
* sorts out keycodes
* move midi around
* remove mbed
* replaces keymap with qmk/keymap_common
* fixes keymap.h
* keymap, config, quantum rearrange
* removes unneeded lufa stuff
Diffstat (limited to 'tmk_core/tool/mbed/mbed-sdk/libraries/dsp/cmsis_dsp/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c')
-rw-r--r-- | tmk_core/tool/mbed/mbed-sdk/libraries/dsp/cmsis_dsp/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c | 111 |
1 files changed, 0 insertions, 111 deletions
diff --git a/tmk_core/tool/mbed/mbed-sdk/libraries/dsp/cmsis_dsp/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c b/tmk_core/tool/mbed/mbed-sdk/libraries/dsp/cmsis_dsp/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c deleted file mode 100644 index 89b2477fc5..0000000000 --- a/tmk_core/tool/mbed/mbed-sdk/libraries/dsp/cmsis_dsp/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c +++ /dev/null @@ -1,111 +0,0 @@ -/* ---------------------------------------------------------------------- -* Copyright (C) 2010-2013 ARM Limited. All rights reserved. -* -* $Date: 17. January 2013 -* $Revision: V1.4.1 -* -* Project: CMSIS DSP Library -* Title: arm_biquad_cascade_df1_init_q31.c -* -* Description: Q31 Biquad cascade DirectFormI(DF1) filter initialization 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" - -/** - * @ingroup groupFilters - */ - -/** - * @addtogroup BiquadCascadeDF1 - * @{ - */ - -/** - * @details - * - * @param[in,out] *S points to an instance of the Q31 Biquad cascade structure. - * @param[in] numStages number of 2nd order stages in the filter. - * @param[in] *pCoeffs points to the filter coefficients buffer. - * @param[in] *pState points to the state buffer. - * @param[in] postShift Shift to be applied after the accumulator. Varies according to the coefficients format - * @return none - * - * <b>Coefficient and State Ordering:</b> - * - * \par - * The coefficients are stored in the array <code>pCoeffs</code> in the following order: - * <pre> - * {b10, b11, b12, a11, a12, b20, b21, b22, a21, a22, ...} - * </pre> - * where <code>b1x</code> and <code>a1x</code> are the coefficients for the first stage, - * <code>b2x</code> and <code>a2x</code> are the coefficients for the second stage, - * and so on. The <code>pCoeffs</code> array contains a total of <code>5*numStages</code> values. - * - * \par - * The <code>pState</code> points to state variables array. - * Each Biquad stage has 4 state variables <code>x[n-1], x[n-2], y[n-1],</code> and <code>y[n-2]</code>. - * The state variables are arranged in the <code>pState</code> array as: - * <pre> - * {x[n-1], x[n-2], y[n-1], y[n-2]} - * </pre> - * The 4 state variables for stage 1 are first, then the 4 state variables for stage 2, and so on. - * The state array has a total length of <code>4*numStages</code> values. - * The state variables are updated after each block of data is processed; the coefficients are untouched. - */ - -void arm_biquad_cascade_df1_init_q31( - arm_biquad_casd_df1_inst_q31 * S, - uint8_t numStages, - q31_t * pCoeffs, - q31_t * pState, - int8_t postShift) -{ - /* Assign filter stages */ - S->numStages = numStages; - - /* Assign postShift to be applied to the output */ - S->postShift = postShift; - - /* Assign coefficient pointer */ - S->pCoeffs = pCoeffs; - - /* Clear state buffer and size is always 4 * numStages */ - memset(pState, 0, (4u * (uint32_t) numStages) * sizeof(q31_t)); - - /* Assign state pointer */ - S->pState = pState; -} - -/** - * @} end of BiquadCascadeDF1 group - */ |