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author | px4dev <px4@purgatory.org> | 2013-05-20 00:30:43 +0200 |
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committer | px4dev <px4@purgatory.org> | 2013-05-20 00:30:43 +0200 |
commit | 5576e321fa8cd027b15deeb15b7ca05541fde4fe (patch) | |
tree | b8a8dac6fab2ecdb72c90ece845112161a52997a /src/modules/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c | |
parent | 3a1c9f14f68054537657851eacb60d930c3d4221 (diff) | |
download | px4-firmware-5576e321fa8cd027b15deeb15b7ca05541fde4fe.tar.gz px4-firmware-5576e321fa8cd027b15deeb15b7ca05541fde4fe.tar.bz2 px4-firmware-5576e321fa8cd027b15deeb15b7ca05541fde4fe.zip |
Use the new prebuilt-library support to wrap the ARM CMSIS DSP library, and update to the version shipped with CMSIS 3.0 r3p2
Diffstat (limited to 'src/modules/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c')
-rw-r--r-- | src/modules/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/src/modules/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c b/src/modules/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c deleted file mode 100644 index dbbb8aa2b..000000000 --- a/src/modules/mathlib/CMSIS/DSP_Lib/Source/FilteringFunctions/arm_biquad_cascade_df1_init_q31.c +++ /dev/null @@ -1,109 +0,0 @@ -/* ----------------------------------------------------------------------
-* Copyright (C) 2010 ARM Limited. All rights reserved.
-*
-* $Date: 15. February 2012
-* $Revision: V1.1.0
-*
-* 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
-*
-* Version 1.1.0 2012/02/15
-* Updated with more optimizations, bug fixes and minor API changes.
-*
-* Version 1.0.10 2011/7/15
-* Big Endian support added and Merged M0 and M3/M4 Source code.
-*
-* Version 1.0.3 2010/11/29
-* Re-organized the CMSIS folders and updated documentation.
-*
-* Version 1.0.2 2010/11/11
-* Documentation updated.
-*
-* Version 1.0.1 2010/10/05
-* Production release and review comments incorporated.
-*
-* Version 1.0.0 2010/09/20
-* Production release and review comments incorporated.
-*
-* Version 0.0.5 2010/04/26
-* incorporated review comments and updated with latest CMSIS layer
-*
-* Version 0.0.3 2010/03/10
-* Initial version
-* -------------------------------------------------------------------- */
-
-#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
- */
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