filter.h File Reference

Data filtering library. More...

#include <math.h>
#include <zephyr/kernel.h>
#include <zephyr/sys/__assert.h>

Go to the source code of this file.

Data Structures
struct	iir_filter_single_pole_s16
	Signed 16-bit IIR single-pole filter with fraction saving. More...
struct	iir_filter_single_pole_s32
	Signed 32-bit IIR single-pole filter with fraction saving. More...
struct	iir_filter_single_pole_f32
	Floating point IIR single-pole filter. More...

Functions
static uint32_t	iir_filter_alpha_init (float alpha)
	Convert a filter alpha to a form compatible with IIR filters.
static void	iir_filter_single_pole_s16_init (struct iir_filter_single_pole_s16 *filter, uint32_t alpha, int16_t initial)
	Initialise the integer IIR single-pole filter.
static int16_t	iir_filter_single_pole_s16_step (struct iir_filter_single_pole_s16 *filter, int16_t x)
	Run the filter for one step.
static void	iir_filter_single_pole_s32_init (struct iir_filter_single_pole_s32 *filter, uint32_t alpha, int32_t initial)
	Initialise the integer IIR single-pole filter.
static int32_t	iir_filter_single_pole_s32_step (struct iir_filter_single_pole_s32 *filter, int32_t x)
	Run the filter for one step.
static void	iir_filter_single_pole_f32_init (struct iir_filter_single_pole_f32 *filter, float alpha, float initial)
	Initialise the float IIR single-pole filter.
static float	iir_filter_single_pole_f32_step (struct iir_filter_single_pole_f32 *filter, float x)
	Run the filter for one step.

Detailed Description

Data filtering library.

Copyright

2024 Embeint Holdings Pty Ltd

Author

Jordan Yates jorda.nosp@m.n@em.nosp@m.beint.nosp@m..com

SPDX-License-Identifier: FSL-1.1-ALv2