31 lines
952 B
C
31 lines
952 B
C
/*
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* Copyright 2020 NXP
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* All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef __GLITCH_FILTER_H__
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#define __GLITCH_FILTER_H__
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#include <stdint.h>
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#include <stdbool.h>
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#include <string.h>
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/* Keep all the static variable and information for each key. */
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typedef struct
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{
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/* Attr. */
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uint32_t filterLevelMax; /* The output would change if the new value keeps enough time. */
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/* Static. */
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int32_t initValue; /* Initialize value. */
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int32_t stableOutput; /* Current output value. */
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int32_t newOutput; /* Potential output value, would be change to output value if it keeps long enough. */
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uint32_t filterLevelCount; /* Tick counter for next value. */
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} glitch_filter_handle_t;
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void FILTER_Init(glitch_filter_handle_t *handle, int32_t initValue, uint32_t filter_level);
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int32_t FILTER_Output(glitch_filter_handle_t *handle, int32_t inputRaw);
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#endif /* __GLITCH_FILTER_H__ */
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