52 lines
1.3 KiB
C
52 lines
1.3 KiB
C
/*
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* Copyright (c) 2018 STMicroelectronics
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef MPXXDTYY_H
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#define MPXXDTYY_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <audio/dmic.h>
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#include <zephyr.h>
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#include <device.h>
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#include "OpenPDMFilter.h"
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#define MPXXDTYY_MIN_PDM_FREQ 1200000 /* 1.2MHz */
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#define MPXXDTYY_MAX_PDM_FREQ 3250000 /* 3.25MHz */
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#define DEV_CFG(dev) \
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((struct mpxxdtyy_config *const)(dev)->config->config_info)
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#define DEV_DATA(dev) \
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((struct mpxxdtyy_data *const)(dev)->driver_data)
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struct mpxxdtyy_data {
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struct device *comm_master;
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enum dmic_state state;
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TPDMFilter_InitStruct pdm_filter;
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size_t pcm_mem_size;
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struct k_mem_slab *pcm_mem_slab;
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};
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u16_t sw_filter_lib_init(struct device *dev, struct dmic_cfg *cfg);
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int sw_filter_lib_run(TPDMFilter_InitStruct *pdm_filter,
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void *pdm_block, void *pcm_block,
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size_t pdm_size, size_t pcm_size);
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#ifdef DT_ST_MPXXDTYY_BUS_I2S
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int mpxxdtyy_i2s_read(struct device *dev, u8_t stream, void **buffer,
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size_t *size, s32_t timeout);
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int mpxxdtyy_i2s_trigger(struct device *dev, enum dmic_trigger cmd);
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int mpxxdtyy_i2s_configure(struct device *dev, struct dmic_cfg *cfg);
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#endif /* DT_ST_MPXXDTYY_BUS_I2S */
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#ifdef __cplusplus
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}
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#endif
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#endif /* MPXXDTYY_H */
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