/* * Copyright (c) 2018, Freescale Semiconductor, Inc. * Copyright 2019-2020 NXP * All rights reserved. * * SPDX-License-Identifier: BSD-3-Clause */ #ifndef _FSL_PDM_H_ #define _FSL_PDM_H_ #include "fsl_common.h" /*! * @addtogroup pdm_driver PDM Driver * @{ */ /******************************************************************************* * Definitions ******************************************************************************/ /*! @name Driver version */ /*@{*/ #define FSL_PDM_DRIVER_VERSION (MAKE_VERSION(2, 8, 0)) /*!< Version 2.8.0 */ /*@}*/ /*! @brief PDM XFER QUEUE SIZE */ #define PDM_XFER_QUEUE_SIZE (4U) /*! @brief PDM return status*/ enum { kStatus_PDM_Busy = MAKE_STATUS(kStatusGroup_PDM, 0), /*!< PDM is busy. */ #if (defined(FSL_FEATURE_PDM_HAS_STATUS_LOW_FREQ) && (FSL_FEATURE_PDM_HAS_STATUS_LOW_FREQ == 1U)) kStatus_PDM_CLK_LOW = MAKE_STATUS(kStatusGroup_PDM, 1), /*!< PDM clock frequency low */ #endif kStatus_PDM_FIFO_ERROR = MAKE_STATUS(kStatusGroup_PDM, 2), /*!< PDM FIFO underrun or overflow */ kStatus_PDM_QueueFull = MAKE_STATUS(kStatusGroup_PDM, 3), /*!< PDM FIFO underrun or overflow */ kStatus_PDM_Idle = MAKE_STATUS(kStatusGroup_PDM, 4), /*!< PDM is idle */ kStatus_PDM_Output_ERROR = MAKE_STATUS(kStatusGroup_PDM, 5), /*!< PDM is output error */ kStatus_PDM_ChannelConfig_Failed = MAKE_STATUS(kStatusGroup_PDM, 6), /*!< PDM channel config failed */ #if !(defined(FSL_FEATURE_PDM_HAS_NO_HWVAD) && FSL_FEATURE_PDM_HAS_NO_HWVAD) kStatus_PDM_HWVAD_VoiceDetected = MAKE_STATUS(kStatusGroup_PDM, 7), /*!< PDM hwvad voice detected */ kStatus_PDM_HWVAD_Error = MAKE_STATUS(kStatusGroup_PDM, 8), /*!< PDM hwvad error */ #endif }; /*! @brief The PDM interrupt enable flag */ enum _pdm_interrupt_enable { kPDM_ErrorInterruptEnable = PDM_CTRL_1_ERREN_MASK, /*!< PDM channel error interrupt enable. */ kPDM_FIFOInterruptEnable = PDM_CTRL_1_DISEL(2U), /*!< PDM channel FIFO interrupt */ }; /*! @brief The PDM status */ enum _pdm_internal_status { kPDM_StatusDfBusyFlag = (int)PDM_STAT_BSY_FIL_MASK, /*!< Decimation filter is busy processing data */ #if !(defined(FSL_FEATURE_PDM_HAS_NO_FIR_RDY) && FSL_FEATURE_PDM_HAS_NO_FIR_RDY) kPDM_StatusFIRFilterReady = PDM_STAT_FIR_RDY_MASK, /*!< FIR filter data is ready */ #endif #if (defined(FSL_FEATURE_PDM_HAS_STATUS_LOW_FREQ) && (FSL_FEATURE_PDM_HAS_STATUS_LOW_FREQ == 1U)) kPDM_StatusFrequencyLow = PDM_STAT_LOWFREQF_MASK, /*!< Mic app clock frequency not high enough */ #endif kPDM_StatusCh0FifoDataAvaliable = PDM_STAT_CH0F_MASK, /*!< channel 0 fifo data reached watermark level */ kPDM_StatusCh1FifoDataAvaliable = PDM_STAT_CH1F_MASK, /*!< channel 1 fifo data reached watermark level */ kPDM_StatusCh2FifoDataAvaliable = PDM_STAT_CH2F_MASK, /*!< channel 2 fifo data reached watermark level */ kPDM_StatusCh3FifoDataAvaliable = PDM_STAT_CH3F_MASK, /*!< channel 3 fifo data reached watermark level */ #if !defined(FSL_FEATURE_PDM_CHANNEL_NUM) || (FSL_FEATURE_PDM_CHANNEL_NUM == 8U) kPDM_StatusCh4FifoDataAvaliable = PDM_STAT_CH4F_MASK, /*!< channel 4 fifo data reached watermark level */ kPDM_StatusCh5FifoDataAvaliable = PDM_STAT_CH5F_MASK, /*!< channel 5 fifo data reached watermark level */ kPDM_StatusCh6FifoDataAvaliable = PDM_STAT_CH6F_MASK, /*!< channel 6 fifo data reached watermark level */ kPDM_StatusCh7FifoDataAvaliable = PDM_STAT_CH7F_MASK, /*!< channel 7 fifo data reached watermark level */ #endif }; /*! @brief PDM channel enable mask */ enum _pdm_channel_enable_mask { kPDM_EnableChannel0 = PDM_STAT_CH0F_MASK, /*!< channgel 0 enable mask */ kPDM_EnableChannel1 = PDM_STAT_CH1F_MASK, /*!< channgel 1 enable mask */ kPDM_EnableChannel2 = PDM_STAT_CH2F_MASK, /*!< channgel 2 enable mask */ kPDM_EnableChannel3 = PDM_STAT_CH3F_MASK, /*!< channgel 3 enable mask */ #if !defined(FSL_FEATURE_PDM_CHANNEL_NUM) || (FSL_FEATURE_PDM_CHANNEL_NUM == 8U) kPDM_EnableChannel4 = PDM_STAT_CH4F_MASK, /*!< channgel 4 enable mask */ kPDM_EnableChannel5 = PDM_STAT_CH5F_MASK, /*!< channgel 5 enable mask */ kPDM_EnableChannel6 = PDM_STAT_CH6F_MASK, /*!< channgel 6 enable mask */ kPDM_EnableChannel7 = PDM_STAT_CH7F_MASK, /*!< channgel 7 enable mask */ kPDM_EnableChannelAll = kPDM_EnableChannel0 | kPDM_EnableChannel1 | kPDM_EnableChannel2 | kPDM_EnableChannel3 | kPDM_EnableChannel4 | kPDM_EnableChannel5 | kPDM_EnableChannel6 | kPDM_EnableChannel7, #else kPDM_EnableChannelAll = kPDM_EnableChannel0 | kPDM_EnableChannel1 | kPDM_EnableChannel2 | kPDM_EnableChannel3, #endif }; /*! @brief The PDM fifo status */ enum _pdm_fifo_status { kPDM_FifoStatusUnderflowCh0 = PDM_FIFO_STAT_FIFOUND0_MASK, /*!< channel0 fifo status underflow */ kPDM_FifoStatusUnderflowCh1 = PDM_FIFO_STAT_FIFOUND1_MASK, /*!< channel1 fifo status underflow */ kPDM_FifoStatusUnderflowCh2 = PDM_FIFO_STAT_FIFOUND2_MASK, /*!< channel2 fifo status underflow */ kPDM_FifoStatusUnderflowCh3 = PDM_FIFO_STAT_FIFOUND3_MASK, /*!< channel3 fifo status underflow */ #if !defined(FSL_FEATURE_PDM_CHANNEL_NUM) || (FSL_FEATURE_PDM_CHANNEL_NUM == 8U) kPDM_FifoStatusUnderflowCh4 = PDM_FIFO_STAT_FIFOUND4_MASK, /*!< channel4 fifo status underflow */ kPDM_FifoStatusUnderflowCh5 = PDM_FIFO_STAT_FIFOUND5_MASK, /*!< channel5 fifo status underflow */ kPDM_FifoStatusUnderflowCh6 = PDM_FIFO_STAT_FIFOUND6_MASK, /*!< channel6 fifo status underflow */ kPDM_FifoStatusUnderflowCh7 = PDM_FIFO_STAT_FIFOUND6_MASK, /*!< channel7 fifo status underflow */ #endif kPDM_FifoStatusOverflowCh0 = PDM_FIFO_STAT_FIFOOVF0_MASK, /*!< channel0 fifo status overflow */ kPDM_FifoStatusOverflowCh1 = PDM_FIFO_STAT_FIFOOVF1_MASK, /*!< channel1 fifo status overflow */ kPDM_FifoStatusOverflowCh2 = PDM_FIFO_STAT_FIFOOVF2_MASK, /*!< channel2 fifo status overflow */ kPDM_FifoStatusOverflowCh3 = PDM_FIFO_STAT_FIFOOVF3_MASK, /*!< channel3 fifo status overflow */ #if !defined(FSL_FEATURE_PDM_CHANNEL_NUM) || (FSL_FEATURE_PDM_CHANNEL_NUM == 8U) kPDM_FifoStatusOverflowCh4 = PDM_FIFO_STAT_FIFOOVF4_MASK, /*!< channel4 fifo status overflow */ kPDM_FifoStatusOverflowCh5 = PDM_FIFO_STAT_FIFOOVF5_MASK, /*!< channel5 fifo status overflow */ kPDM_FifoStatusOverflowCh6 = PDM_FIFO_STAT_FIFOOVF6_MASK, /*!< channel6 fifo status overflow */ kPDM_FifoStatusOverflowCh7 = PDM_FIFO_STAT_FIFOOVF7_MASK, /*!< channel7 fifo status overflow */ #endif }; #if defined(FSL_FEATURE_PDM_HAS_RANGE_CTRL) && FSL_FEATURE_PDM_HAS_RANGE_CTRL /*! @brief The PDM output status */ enum _pdm_range_status { kPDM_RangeStatusUnderFlowCh0 = PDM_RANGE_STAT_RANGEUNF0_MASK, /*!< channel0 range status underflow */ kPDM_RangeStatusUnderFlowCh1 = PDM_RANGE_STAT_RANGEUNF1_MASK, /*!< channel1 range status underflow */ kPDM_RangeStatusUnderFlowCh2 = PDM_RANGE_STAT_RANGEUNF2_MASK, /*!< channel2 range status underflow */ kPDM_RangeStatusUnderFlowCh3 = PDM_RANGE_STAT_RANGEUNF3_MASK, /*!< channel3 range status underflow */ #if !defined(FSL_FEATURE_PDM_CHANNEL_NUM) || (FSL_FEATURE_PDM_CHANNEL_NUM == 8U) kPDM_RangeStatusUnderFlowCh4 = PDM_RANGE_STAT_RANGEUNF4_MASK, /*!< channel4 range status underflow */ kPDM_RangeStatusUnderFlowCh5 = PDM_RANGE_STAT_RANGEUNF5_MASK, /*!< channel5 range status underflow */ kPDM_RangeStatusUnderFlowCh6 = PDM_RANGE_STAT_RANGEUNF6_MASK, /*!< channel6 range status underflow */ kPDM_RangeStatusUnderFlowCh7 = PDM_RANGE_STAT_RANGEUNF7_MASK, /*!< channel7 range status underflow */ #endif kPDM_RangeStatusOverFlowCh0 = PDM_RANGE_STAT_RANGEOVF0_MASK, /*!< channel0 range status overflow */ kPDM_RangeStatusOverFlowCh1 = PDM_RANGE_STAT_RANGEOVF1_MASK, /*!< channel1 range status overflow */ kPDM_RangeStatusOverFlowCh2 = PDM_RANGE_STAT_RANGEOVF2_MASK, /*!< channel2 range status overflow */ kPDM_RangeStatusOverFlowCh3 = PDM_RANGE_STAT_RANGEOVF3_MASK, /*!< channel3 range status overflow */ #if !defined(FSL_FEATURE_PDM_CHANNEL_NUM) || (FSL_FEATURE_PDM_CHANNEL_NUM == 8U) kPDM_RangeStatusOverFlowCh4 = PDM_RANGE_STAT_RANGEOVF4_MASK, /*!< channel4 range status overflow */ kPDM_RangeStatusOverFlowCh5 = PDM_RANGE_STAT_RANGEOVF5_MASK, /*!< channel5 range status overflow */ kPDM_RangeStatusOverFlowCh6 = PDM_RANGE_STAT_RANGEOVF6_MASK, /*!< channel6 range status overflow */ kPDM_RangeStatusOverFlowCh7 = PDM_RANGE_STAT_RANGEOVF7_MASK, /*!< channel7 range status overflow */ #endif }; #else /*! @brief The PDM output status */ enum _pdm_output_status { kPDM_OutputStatusUnderFlowCh0 = PDM_OUT_STAT_OUTUNF0_MASK, /*!< channel0 output status underflow */ kPDM_OutputStatusUnderFlowCh1 = PDM_OUT_STAT_OUTUNF1_MASK, /*!< channel1 output status underflow */ kPDM_OutputStatusUnderFlowCh2 = PDM_OUT_STAT_OUTUNF2_MASK, /*!< channel2 output status underflow */ kPDM_OutputStatusUnderFlowCh3 = PDM_OUT_STAT_OUTUNF3_MASK, /*!< channel3 output status underflow */ #if !defined(FSL_FEATURE_PDM_CHANNEL_NUM) || (FSL_FEATURE_PDM_CHANNEL_NUM == 8U) kPDM_OutputStatusUnderFlowCh4 = PDM_OUT_STAT_OUTUNF4_MASK, /*!< channel4 output status underflow */ kPDM_OutputStatusUnderFlowCh5 = PDM_OUT_STAT_OUTUNF5_MASK, /*!< channel5 output status underflow */ kPDM_OutputStatusUnderFlowCh6 = PDM_OUT_STAT_OUTUNF6_MASK, /*!< channel6 output status underflow */ kPDM_OutputStatusUnderFlowCh7 = PDM_OUT_STAT_OUTUNF7_MASK, /*!< channel7 output status underflow */ #endif kPDM_OutputStatusOverFlowCh0 = PDM_OUT_STAT_OUTOVF0_MASK, /*!< channel0 output status overflow */ kPDM_OutputStatusOverFlowCh1 = PDM_OUT_STAT_OUTOVF1_MASK, /*!< channel1 output status overflow */ kPDM_OutputStatusOverFlowCh2 = PDM_OUT_STAT_OUTOVF2_MASK, /*!< channel2 output status overflow */ kPDM_OutputStatusOverFlowCh3 = PDM_OUT_STAT_OUTOVF3_MASK, /*!< channel3 output status overflow */ #if !defined(FSL_FEATURE_PDM_CHANNEL_NUM) || (FSL_FEATURE_PDM_CHANNEL_NUM == 8U) kPDM_OutputStatusOverFlowCh4 = PDM_OUT_STAT_OUTOVF4_MASK, /*!< channel4 output status overflow */ kPDM_OutputStatusOverFlowCh5 = PDM_OUT_STAT_OUTOVF5_MASK, /*!< channel5 output status overflow */ kPDM_OutputStatusOverFlowCh6 = PDM_OUT_STAT_OUTOVF6_MASK, /*!< channel6 output status overflow */ kPDM_OutputStatusOverFlowCh7 = PDM_OUT_STAT_OUTOVF7_MASK, /*!< channel7 output status overflow */ #endif }; #endif #if (defined(FSL_FEATURE_PDM_HAS_DC_OUT_CTRL) && (FSL_FEATURE_PDM_HAS_DC_OUT_CTRL)) /*! @brief PDM DC remover configurations */ typedef enum _pdm_dc_remover { kPDM_DcRemoverCutOff20Hz = 0U, /*!< DC remover cut off 20HZ */ kPDM_DcRemoverCutOff13Hz = 1U, /*!< DC remover cut off 13.3HZ */ kPDM_DcRemoverCutOff40Hz = 2U, /*!< DC remover cut off 40HZ */ kPDM_DcRemoverBypass = 3U, /*!< DC remover bypass */ } pdm_dc_remover_t; #else /*! @brief PDM DC remover configurations */ typedef enum _pdm_dc_remover { kPDM_DcRemoverCutOff21Hz = 0U, /*!< DC remover cut off 21HZ */ kPDM_DcRemoverCutOff83Hz = 1U, /*!< DC remover cut off 83HZ */ kPDM_DcRemoverCutOff152Hz = 2U, /*!< DC remover cut off 152HZ */ kPDM_DcRemoverBypass = 3U, /*!< DC remover bypass */ } pdm_dc_remover_t; #endif /*! @brief PDM decimation filter quality mode */ typedef enum _pdm_df_quality_mode { kPDM_QualityModeMedium = 0U, /*!< quality mode memdium */ kPDM_QualityModeHigh = 1U, /*!< quality mode high */ kPDM_QualityModeLow = 7U, /*!< quality mode low */ kPDM_QualityModeVeryLow0 = 6U, /*!< quality mode very low0 */ kPDM_QualityModeVeryLow1 = 5U, /*!< quality mode very low1 */ kPDM_QualityModeVeryLow2 = 4U, /*!< quality mode very low2 */ } pdm_df_quality_mode_t; /*! @brief PDM quality mode K factor */ enum _pdm_qulaity_mode_k_factor { kPDM_QualityModeHighKFactor = 1U, /*!< high quality mode K factor = 1 / 2 */ kPDM_QualityModeMediumKFactor = 2U, /*!< medium/very low0 quality mode K factor = 2 / 2 */ kPDM_QualityModeLowKFactor = 4U, /*!< low/very low1 quality mode K factor = 4 / 2 */ kPDM_QualityModeVeryLow2KFactor = 8U, /*!< very low2 quality mode K factor = 8 / 2 */ }; /*! @brief PDM decimation filter output gain */ typedef enum _pdm_df_output_gain { kPDM_DfOutputGain0 = 0U, /*!< Decimation filter output gain 0 */ kPDM_DfOutputGain1 = 1U, /*!< Decimation filter output gain 1 */ kPDM_DfOutputGain2 = 2U, /*!< Decimation filter output gain 2 */ kPDM_DfOutputGain3 = 3U, /*!< Decimation filter output gain 3 */ kPDM_DfOutputGain4 = 4U, /*!< Decimation filter output gain 4 */ kPDM_DfOutputGain5 = 5U, /*!< Decimation filter output gain 5 */ kPDM_DfOutputGain6 = 6U, /*!< Decimation filter output gain 6 */ kPDM_DfOutputGain7 = 7U, /*!< Decimation filter output gain 7 */ kPDM_DfOutputGain8 = 8U, /*!< Decimation filter output gain 8 */ kPDM_DfOutputGain9 = 9U, /*!< Decimation filter output gain 9 */ kPDM_DfOutputGain10 = 0xAU, /*!< Decimation filter output gain 10 */ kPDM_DfOutputGain11 = 0xBU, /*!< Decimation filter output gain 11 */ kPDM_DfOutputGain12 = 0xCU, /*!< Decimation filter output gain 12 */ kPDM_DfOutputGain13 = 0xDU, /*!< Decimation filter output gain 13 */ kPDM_DfOutputGain14 = 0xEU, /*!< Decimation filter output gain 14 */ kPDM_DfOutputGain15 = 0xFU, /*!< Decimation filter output gain 15 */ } pdm_df_output_gain_t; /*! @brief PDM data width */ enum _pdm_data_width { #if defined(FSL_FEATURE_PDM_FIFO_WIDTH) && (FSL_FEATURE_PDM_FIFO_WIDTH != 2U) kPDM_DataWwidth24 = 3U, /*!< PDM data width 24bit */ kPDM_DataWwidth32 = 4U, /*!< PDM data width 32bit */ #else kPDM_DataWdith16 = 2U, /*!< PDM data width 16bit */ #endif }; /*! @brief PDM channel configurations */ typedef struct _pdm_channel_config { #if (defined(FSL_FEATURE_PDM_HAS_DC_OUT_CTRL) && (FSL_FEATURE_PDM_HAS_DC_OUT_CTRL)) pdm_dc_remover_t outputCutOffFreq; /*!< PDM output DC remover cut off frequency */ #endif #if !(defined(FSL_FEATURE_PDM_DC_CTRL_VALUE_FIXED) && (FSL_FEATURE_PDM_DC_CTRL_VALUE_FIXED)) pdm_dc_remover_t cutOffFreq; /*!< DC remover cut off frequency */ #endif pdm_df_output_gain_t gain; /*!< Decimation Filter Output Gain */ } pdm_channel_config_t; /*! @brief PDM user configuration structure */ typedef struct _pdm_config { bool enableDoze; /*!< This module will enter disable/low leakage mode if DOZEN is active with ipg_doze is asserted */ uint8_t fifoWatermark; /*!< Watermark value for FIFO */ pdm_df_quality_mode_t qualityMode; /*!< Quality mode */ uint8_t cicOverSampleRate; /*!< CIC filter over sampling rate */ } pdm_config_t; #if !(defined(FSL_FEATURE_PDM_HAS_NO_HWVAD) && FSL_FEATURE_PDM_HAS_NO_HWVAD) /*! @brief PDM voice activity detector interrupt type */ enum _pdm_hwvad_interrupt_enable { kPDM_HwvadErrorInterruptEnable = PDM_VAD0_CTRL_1_VADERIE_MASK, /*!< PDM channel HWVAD error interrupt enable. */ kPDM_HwvadInterruptEnable = PDM_VAD0_CTRL_1_VADIE_MASK, /*!< PDM channel HWVAD interrupt */ }; /*! @brief The PDM hwvad interrupt status flag */ enum _pdm_hwvad_int_status { kPDM_HwvadStatusInputSaturation = PDM_VAD0_STAT_VADINSATF_MASK, /*!< HWVAD saturation condition */ kPDM_HwvadStatusVoiceDetectFlag = PDM_VAD0_STAT_VADIF_MASK, /*!< HWVAD voice detect interrupt triggered */ }; /*! @brief High pass filter configure cut-off frequency*/ typedef enum _pdm_hwvad_hpf_config { kPDM_HwvadHpfBypassed = 0x0U, /*!< High-pass filter bypass */ kPDM_HwvadHpfCutOffFreq1750Hz = 0x1U, /*!< High-pass filter cut off frequency 1750HZ */ kPDM_HwvadHpfCutOffFreq215Hz = 0x2U, /*!< High-pass filter cut off frequency 215HZ */ kPDM_HwvadHpfCutOffFreq102Hz = 0x3U, /*!< High-pass filter cut off frequency 102HZ */ } pdm_hwvad_hpf_config_t; /*! @brief HWVAD internal filter status */ typedef enum _pdm_hwvad_filter_status { kPDM_HwvadInternalFilterNormalOperation = 0U, /*!< internal filter ready for normal operation */ kPDM_HwvadInternalFilterInitial = PDM_VAD0_CTRL_1_VADST10_MASK, /*!< interla filter are initial */ } pdm_hwvad_filter_status_t; /*! @brief PDM voice activity detector user configuration structure */ typedef struct _pdm_hwvad_config { uint8_t channel; /*!< Which channel uses voice activity detector */ uint8_t initializeTime; /*!< Number of frames or samples to initialize voice activity detector. */ uint8_t cicOverSampleRate; /*!< CIC filter over sampling rate */ uint8_t inputGain; /*!< Voice activity detector input gain */ uint32_t frameTime; /*!< Voice activity frame time */ pdm_hwvad_hpf_config_t cutOffFreq; /*!< High pass filter cut off frequency */ bool enableFrameEnergy; /*!< If frame energy enabled, true means enable */ bool enablePreFilter; /*!< If pre-filter enabled */ } pdm_hwvad_config_t; /*! @brief PDM voice activity detector noise filter user configuration structure */ typedef struct _pdm_hwvad_noise_filter { bool enableAutoNoiseFilter; /*!< If noise fileter automatically activated, true means enable */ bool enableNoiseMin; /*!< If Noise minimum block enabled, true means enabled */ bool enableNoiseDecimation; /*!< If enable noise input decimation */ bool enableNoiseDetectOR; /*!< Enables a OR logic in the output of minimum noise estimator block */ uint32_t noiseFilterAdjustment; /*!< The adjustment value of the noise filter */ uint32_t noiseGain; /*!< Gain value for the noise energy or envelope estimated */ } pdm_hwvad_noise_filter_t; /*! @brief PDM voice activity detector zero cross detector result */ typedef enum _pdm_hwvad_zcd_result { kPDM_HwvadResultOREnergyBasedDetection = 0U, /*!< zero cross detector result will be OR with energy based detection */ kPDM_HwvadResultANDEnergyBasedDetection = 1U, /*!< zero cross detector result will be AND with energy based detection */ } pdm_hwvad_zcd_result_t; /*! @brief PDM voice activity detector zero cross detector configuration structure */ typedef struct _pdm_hwvad_zero_cross_detector { bool enableAutoThreshold; /*!< If ZCD auto-threshold enabled, true means enabled. */ pdm_hwvad_zcd_result_t zcdAnd; /*!< Is ZCD result is AND'ed with energy-based detection, false means OR'ed */ uint32_t threshold; /*!< The adjustment value of the noise filter */ uint32_t adjustmentThreshold; /*!< Gain value for the noise energy or envelope estimated */ } pdm_hwvad_zero_cross_detector_t; #endif /*! @brief PDM SDMA transfer structure */ typedef struct _pdm_transfer { volatile uint8_t *data; /*!< Data start address to transfer. */ volatile size_t dataSize; /*!< Total Transfer bytes size. */ } pdm_transfer_t; /*! @brief PDM handle */ typedef struct _pdm_handle pdm_handle_t; /*! @brief PDM transfer callback prototype */ typedef void (*pdm_transfer_callback_t)(PDM_Type *base, pdm_handle_t *handle, status_t status, void *userData); #if !(defined(FSL_FEATURE_PDM_HAS_NO_HWVAD) && FSL_FEATURE_PDM_HAS_NO_HWVAD) /*! @brief PDM HWVAD callback prototype */ typedef void (*pdm_hwvad_callback_t)(status_t status, void *userData); /*! @brief PDM HWVAD notification structure */ typedef struct _pdm_hwvad_notification { pdm_hwvad_callback_t callback; void *userData; } pdm_hwvad_notification_t; #endif /*! @brief PDM handle structure */ struct _pdm_handle { uint32_t state; /*!< Transfer status */ pdm_transfer_callback_t callback; /*!< Callback function called at transfer event*/ void *userData; /*!< Callback parameter passed to callback function*/ pdm_transfer_t pdmQueue[PDM_XFER_QUEUE_SIZE]; /*!< Transfer queue storing queued transfer */ size_t transferSize[PDM_XFER_QUEUE_SIZE]; /*!< Data bytes need to transfer */ volatile uint8_t queueUser; /*!< Index for user to queue transfer */ volatile uint8_t queueDriver; /*!< Index for driver to get the transfer data and size */ uint32_t format; /*!< data format */ uint8_t watermark; /*!< Watermark value */ uint8_t startChannel; /*!< end channel */ uint8_t channelNums; /*!< Enabled channel number */ }; /******************************************************************************* * API ******************************************************************************/ #if defined(__cplusplus) extern "C" { #endif /*_cplusplus*/ /*! * @name Initialization and deinitialization * @{ */ /*! * @brief Initializes the PDM peripheral. * * Ungates the PDM clock, resets the module, and configures PDM with a configuration structure. * The configuration structure can be custom filled or set with default values by * PDM_GetDefaultConfig(). * * @note This API should be called at the beginning of the application to use * the PDM driver. Otherwise, accessing the PDM module can cause a hard fault * because the clock is not enabled. * * @param base PDM base pointer * @param config PDM configuration structure. */ void PDM_Init(PDM_Type *base, const pdm_config_t *config); /*! * @brief De-initializes the PDM peripheral. * * This API gates the PDM clock. The PDM module can't operate unless PDM_Init * is called to enable the clock. * * @param base PDM base pointer */ void PDM_Deinit(PDM_Type *base); /*! * @brief Resets the PDM module. * * @param base PDM base pointer */ static inline void PDM_Reset(PDM_Type *base) { base->CTRL_1 |= PDM_CTRL_1_SRES_MASK; } /*! * @brief Enables/disables PDM interface. * * @param base PDM base pointer * @param enable True means PDM interface is enabled, false means PDM interface is disabled. */ static inline void PDM_Enable(PDM_Type *base, bool enable) { if (enable) { base->CTRL_1 |= PDM_CTRL_1_PDMIEN_MASK; } else { base->CTRL_1 &= ~PDM_CTRL_1_PDMIEN_MASK; } } /*! * @brief Enables/disables DOZE. * * @param base PDM base pointer * @param enable True means the module will enter Disable/Low Leakage mode when ipg_doze is asserted, false means the * module will not enter Disable/Low Leakage mode when ipg_doze is asserted. */ static inline void PDM_EnableDoze(PDM_Type *base, bool enable) { if (enable) { base->CTRL_1 |= PDM_CTRL_1_DOZEN_MASK; } else { base->CTRL_1 &= ~PDM_CTRL_1_DOZEN_MASK; } } /*! * @brief Enables/disables debug mode for PDM. * The PDM interface cannot enter debug mode once in Disable/Low Leakage or Low Power mode. * @param base PDM base pointer * @param enable True means PDM interface enter debug mode, false means PDM interface in normal mode. */ static inline void PDM_EnableDebugMode(PDM_Type *base, bool enable) { if (enable) { base->CTRL_1 |= PDM_CTRL_1_DBG_MASK; } else { base->CTRL_1 &= ~PDM_CTRL_1_DBG_MASK; } } /*! * @brief Enables/disables PDM interface in debug mode. * * @param base PDM base pointer * @param enable True means PDM interface is enabled debug mode, false means PDM interface is disabled after * after completing the current frame in debug mode. */ static inline void PDM_EnableInDebugMode(PDM_Type *base, bool enable) { if (enable) { base->CTRL_1 |= PDM_CTRL_1_DBGE_MASK; } else { base->CTRL_1 &= ~PDM_CTRL_1_DBGE_MASK; } } /*! * @brief Enables/disables PDM interface disable/Low Leakage mode. * * @param base PDM base pointer * @param enable True means PDM interface is in disable/low leakage mode, False means PDM interface is in normal mode. */ static inline void PDM_EnterLowLeakageMode(PDM_Type *base, bool enable) { if (enable) { base->CTRL_1 |= PDM_CTRL_1_MDIS_MASK; } else { base->CTRL_1 &= ~PDM_CTRL_1_MDIS_MASK; } } /*! * @brief Enables/disables the PDM channel. * * @param base PDM base pointer * @param channel PDM channel number need to enable or disable. * @param enable True means enable PDM channel, false means disable. */ static inline void PDM_EnableChannel(PDM_Type *base, uint8_t channel, bool enable) { if (enable) { base->CTRL_1 |= (1UL << channel); } else { base->CTRL_1 &= ~(1UL << channel); } } /*! * @brief PDM one channel configurations. * * @param base PDM base pointer * @param config PDM channel configurations. * @param channel channel number. * after completing the current frame in debug mode. */ void PDM_SetChannelConfig(PDM_Type *base, uint32_t channel, const pdm_channel_config_t *config); /*! * @brief PDM set sample rate. * * @note This function is depend on the configuration of the PDM and PDM channel, so the correct call sequence is * @code * PDM_Init(base, pdmConfig) * PDM_SetChannelConfig(base, channel, &channelConfig) * PDM_SetSampleRateConfig(base, source, sampleRate) * @endcode * @param base PDM base pointer * @param sourceClock_HZ PDM source clock frequency. * @param sampleRate_HZ PDM sample rate. */ status_t PDM_SetSampleRateConfig(PDM_Type *base, uint32_t sourceClock_HZ, uint32_t sampleRate_HZ); /*! * @brief PDM set sample rate. * * @deprecated Do not use this function. It has been superceded by @ref PDM_SetSampleRateConfig * @param base PDM base pointer * @param enableChannelMask PDM channel enable mask. * @param qualityMode quality mode. * @param osr cic oversample rate * @param clkDiv clock divider */ status_t PDM_SetSampleRate( PDM_Type *base, uint32_t enableChannelMask, pdm_df_quality_mode_t qualityMode, uint8_t osr, uint32_t clkDiv); /*! * @brief Get the instance number for PDM. * * @param base PDM base pointer. */ uint32_t PDM_GetInstance(PDM_Type *base); /*! @} */ /*! * @name Status * @{ */ /*! * @brief Gets the PDM internal status flag. * Use the Status Mask in _pdm_internal_status to get the status value needed * @param base PDM base pointer * @return PDM status flag value. */ static inline uint32_t PDM_GetStatus(PDM_Type *base) { return base->STAT; } /*! * @brief Gets the PDM FIFO status flag. * Use the Status Mask in _pdm_fifo_status to get the status value needed * @param base PDM base pointer * @return FIFO status. */ static inline uint32_t PDM_GetFifoStatus(PDM_Type *base) { return base->FIFO_STAT; } #if defined(FSL_FEATURE_PDM_HAS_RANGE_CTRL) && FSL_FEATURE_PDM_HAS_RANGE_CTRL /*! * @brief Gets the PDM Range status flag. * Use the Status Mask in _pdm_range_status to get the status value needed * @param base PDM base pointer * @return output status. */ static inline uint32_t PDM_GetRangeStatus(PDM_Type *base) { return base->RANGE_STAT; } #else /*! * @brief Gets the PDM output status flag. * Use the Status Mask in _pdm_output_status to get the status value needed * @param base PDM base pointer * @return output status. */ static inline uint32_t PDM_GetOutputStatus(PDM_Type *base) { return base->OUT_STAT; } #endif /*! * @brief Clears the PDM Tx status. * * @param base PDM base pointer * @param mask State mask. It can be a combination of the status between kPDM_StatusFrequencyLow and * kPDM_StatusCh7FifoDataAvaliable. */ static inline void PDM_ClearStatus(PDM_Type *base, uint32_t mask) { base->STAT = mask; } /*! * @brief Clears the PDM Tx status. * * @param base PDM base pointer * @param mask State mask.It can be a combination of the status in _pdm_fifo_status. */ static inline void PDM_ClearFIFOStatus(PDM_Type *base, uint32_t mask) { base->FIFO_STAT = mask; } #if defined(FSL_FEATURE_PDM_HAS_RANGE_CTRL) && FSL_FEATURE_PDM_HAS_RANGE_CTRL /*! * @brief Clears the PDM range status. * * @param base PDM base pointer * @param mask State mask. It can be a combination of the status in _pdm_range_status. */ static inline void PDM_ClearRangeStatus(PDM_Type *base, uint32_t mask) { base->RANGE_STAT = mask; } #else /*! * @brief Clears the PDM output status. * * @param base PDM base pointer * @param mask State mask. It can be a combination of the status in _pdm_output_status. */ static inline void PDM_ClearOutputStatus(PDM_Type *base, uint32_t mask) { base->OUT_STAT = mask; } #endif /*! @} */ /*! * @name Interrupts * @{ */ /*! * @brief Enables the PDM interrupt requests. * * @param base PDM base pointer * @param mask interrupt source * The parameter can be a combination of the following sources if defined. * @arg kPDM_ErrorInterruptEnable * @arg kPDM_FIFOInterruptEnable */ void PDM_EnableInterrupts(PDM_Type *base, uint32_t mask); /*! * @brief Disables the PDM interrupt requests. * * @param base PDM base pointer * @param mask interrupt source * The parameter can be a combination of the following sources if defined. * @arg kPDM_ErrorInterruptEnable * @arg kPDM_FIFOInterruptEnable */ static inline void PDM_DisableInterrupts(PDM_Type *base, uint32_t mask) { base->CTRL_1 &= ~mask; } /*! @} */ /*! * @name DMA Control * @{ */ /*! * @brief Enables/disables the PDM DMA requests. * * @param base PDM base pointer * @param enable True means enable DMA, false means disable DMA. */ static inline void PDM_EnableDMA(PDM_Type *base, bool enable) { if (enable) { base->CTRL_1 = (base->CTRL_1 & (~PDM_CTRL_1_DISEL_MASK)) | PDM_CTRL_1_DISEL(0x1U); } else { base->CTRL_1 &= ~PDM_CTRL_1_DISEL_MASK; } } /*! * @brief Gets the PDM data register address. * * This API is used to provide a transfer address for the PDM DMA transfer configuration. * * @param base PDM base pointer. * @param channel Which data channel used. * @return data register address. */ static inline uint32_t PDM_GetDataRegisterAddress(PDM_Type *base, uint32_t channel) { return (uint32_t)(&(base->DATACH)[channel]); } /*! @} */ /*! * @name Bus Operations * @{ */ #if defined(FSL_FEATURE_PDM_FIFO_WIDTH) && (FSL_FEATURE_PDM_FIFO_WIDTH == 2U) /*! * @brief Reads data from the PDM FIFO. * * @param base PDM base pointer. * @param channel Data channel used. * @return Data in PDM FIFO. */ static inline int16_t PDM_ReadData(PDM_Type *base, uint32_t channel) { return (int16_t)(base->DATACH[channel]); } /*! * @brief PDM read data non blocking. * So the actually read data byte size in this function is (size * 2 * channelNums). * @param base PDM base pointer. * @param startChannel start channel number. * @param channelNums total enabled channelnums. * @param buffer received buffer address. * @param size number of 16bit data to read. */ void PDM_ReadNonBlocking(PDM_Type *base, uint32_t startChannel, uint32_t channelNums, int16_t *buffer, size_t size); #endif /*! * @brief PDM read fifo. * @note: This function support 16 bit only for IP version that only supports 16bit. * * @param base PDM base pointer. * @param startChannel start channel number. * @param channelNums total enabled channelnums. * @param buffer received buffer address. * @param size number of samples to read. * @param dataWidth sample width. */ void PDM_ReadFifo( PDM_Type *base, uint32_t startChannel, uint32_t channelNums, void *buffer, size_t size, uint32_t dataWidth); #if defined(FSL_FEATURE_PDM_FIFO_WIDTH) && (FSL_FEATURE_PDM_FIFO_WIDTH == 4U) /*! * @brief Reads data from the PDM FIFO. * * @param base PDM base pointer. * @param channel Data channel used. * @return Data in PDM FIFO. */ static inline uint32_t PDM_ReadData(PDM_Type *base, uint32_t channel) { return base->DATACH[channel]; } #endif /*! * @brief Set the PDM channel gain. * * Please note for different quality mode, the valid gain value is different, reference RM for detail. * @param base PDM base pointer. * @param channel PDM channel index. * @param gain channel gain, the register gain value range is 0 - 15. */ void PDM_SetChannelGain(PDM_Type *base, uint32_t channel, pdm_df_output_gain_t gain); #if !(defined(FSL_FEATURE_PDM_HAS_NO_HWVAD) && FSL_FEATURE_PDM_HAS_NO_HWVAD) /*! @} */ /*! * @name Voice Activity Detector * @{ */ /*! * @brief Configure voice activity detector. * * @param base PDM base pointer * @param config Voice activity detector configure structure pointer . */ void PDM_SetHwvadConfig(PDM_Type *base, const pdm_hwvad_config_t *config); /*! * @brief PDM hwvad force output disable. * * @param base PDM base pointer * @param enable true is output force disable, false is output not force. */ static inline void PDM_ForceHwvadOutputDisable(PDM_Type *base, bool enable) { if (enable) { base->VAD0_CTRL_2 &= ~PDM_VAD0_CTRL_2_VADFOUTDIS_MASK; } else { base->VAD0_CTRL_2 |= PDM_VAD0_CTRL_2_VADFOUTDIS_MASK; } } /*! * @brief PDM hwvad reset. * It will reset VADNDATA register and will clean all internal buffers, should be called when the PDM isn't running. * * @param base PDM base pointer */ static inline void PDM_ResetHwvad(PDM_Type *base) { base->VAD0_CTRL_1 |= PDM_VAD0_CTRL_1_VADRST_MASK; } /*! * @brief Enable/Disable Voice activity detector. * Should be called when the PDM isn't running. * @param base PDM base pointer. * @param enable True means enable voice activity detector, false means disable. */ static inline void PDM_EnableHwvad(PDM_Type *base, bool enable) { if (enable) { base->VAD0_CTRL_1 |= PDM_VAD0_CTRL_1_VADEN_MASK; } else { base->VAD0_CTRL_1 &= ~PDM_VAD0_CTRL_1_VADEN_MASK; } } /*! * @brief Enables the PDM Voice Detector interrupt requests. * * @param base PDM base pointer * @param mask interrupt source * The parameter can be a combination of the following sources if defined. * @arg kPDM_HWVADErrorInterruptEnable * @arg kPDM_HWVADInterruptEnable */ static inline void PDM_EnableHwvadInterrupts(PDM_Type *base, uint32_t mask) { base->VAD0_CTRL_1 |= mask; } /*! * @brief Disables the PDM Voice Detector interrupt requests. * * @param base PDM base pointer * @param mask interrupt source * The parameter can be a combination of the following sources if defined. * @arg kPDM_HWVADErrorInterruptEnable * @arg kPDM_HWVADInterruptEnable */ static inline void PDM_DisableHwvadInterrupts(PDM_Type *base, uint32_t mask) { base->VAD0_CTRL_1 &= ~mask; } /*! * @brief Clears the PDM voice activity detector status flags. * * @param base PDM base pointer * @param mask State mask,reference _pdm_hwvad_int_status. */ static inline void PDM_ClearHwvadInterruptStatusFlags(PDM_Type *base, uint32_t mask) { base->VAD0_STAT = mask; } /*! * @brief Clears the PDM voice activity detector status flags. * * @param base PDM base pointer * @return status, reference _pdm_hwvad_int_status */ static inline uint32_t PDM_GetHwvadInterruptStatusFlags(PDM_Type *base) { return base->VAD0_STAT & (PDM_VAD0_STAT_VADIF_MASK | PDM_VAD0_STAT_VADINSATF_MASK); } /*! * @brief Get the PDM voice activity detector initial flags. * * @param base PDM base pointer * @return initial flag. */ static inline uint32_t PDM_GetHwvadInitialFlag(PDM_Type *base) { return base->VAD0_STAT & PDM_VAD0_STAT_VADINITF_MASK; } #if !(defined(FSL_FEATURE_PDM_HAS_NO_VADEF) && (FSL_FEATURE_PDM_HAS_NO_VADEF)) /*! * @brief Get the PDM voice activity detector voice detected flags. * NOte: this flag is auto cleared when voice gone. * @param base PDM base pointer * @return voice detected flag. */ static inline uint32_t PDM_GetHwvadVoiceDetectedFlag(PDM_Type *base) { return base->VAD0_STAT & PDM_VAD0_STAT_VADEF_MASK; } #endif /*! * @brief Enables/disables voice activity detector signal filter. * * @param base PDM base pointer * @param enable True means enable signal filter, false means disable. */ static inline void PDM_EnableHwvadSignalFilter(PDM_Type *base, bool enable) { if (enable) { base->VAD0_SCONFIG |= PDM_VAD0_SCONFIG_VADSFILEN_MASK; } else { base->VAD0_SCONFIG &= ~PDM_VAD0_SCONFIG_VADSFILEN_MASK; } } /*! * @brief Configure voice activity detector signal filter. * * @param base PDM base pointer * @param enableMaxBlock If signal maximum block enabled. * @param signalGain Gain value for the signal energy. */ void PDM_SetHwvadSignalFilterConfig(PDM_Type *base, bool enableMaxBlock, uint32_t signalGain); /*! * @brief Configure voice activity detector noise filter. * * @param base PDM base pointer * @param config Voice activity detector noise filter configure structure pointer . */ void PDM_SetHwvadNoiseFilterConfig(PDM_Type *base, const pdm_hwvad_noise_filter_t *config); /*! * @brief Enables/disables voice activity detector zero cross detector. * * @param base PDM base pointer * @param enable True means enable zero cross detector, false means disable. */ static inline void PDM_EnableHwvadZeroCrossDetector(PDM_Type *base, bool enable) { if (enable) { base->VAD0_ZCD |= PDM_VAD0_ZCD_VADZCDEN_MASK; } else { base->VAD0_ZCD &= ~PDM_VAD0_ZCD_VADZCDEN_MASK; } } /*! * @brief Configure voice activity detector zero cross detector. * * @param base PDM base pointer * @param config Voice activity detector zero cross detector configure structure pointer . */ void PDM_SetHwvadZeroCrossDetectorConfig(PDM_Type *base, const pdm_hwvad_zero_cross_detector_t *config); /*! * @brief Reads noise data. * * @param base PDM base pointer. * @return Data in PDM noise data register. */ static inline uint16_t PDM_GetNoiseData(PDM_Type *base) { return (uint16_t)base->VAD0_NDATA; } /*! * @brief set hwvad internal filter status . * Note: filter initial status should be asserted for two more cycles, then set it to normal operation. * @param base PDM base pointer. * @param status internal filter status. */ static inline void PDM_SetHwvadInternalFilterStatus(PDM_Type *base, pdm_hwvad_filter_status_t status) { base->VAD0_CTRL_1 = (base->VAD0_CTRL_1 & (~PDM_VAD0_CTRL_1_VADST10_MASK)) | (uint32_t)status; } /*! * @brief set HWVAD in envelope based mode . * Recommand configurations, * @code * static const pdm_hwvad_config_t hwvadConfig = { * .channel = 0, * .initializeTime = 10U, * .cicOverSampleRate = 0U, * .inputGain = 0U, * .frameTime = 10U, * .cutOffFreq = kPDM_HwvadHpfBypassed, * .enableFrameEnergy = false, * .enablePreFilter = true, }; * static const pdm_hwvad_noise_filter_t noiseFilterConfig = { * .enableAutoNoiseFilter = false, * .enableNoiseMin = true, * .enableNoiseDecimation = true, * .noiseFilterAdjustment = 0U, * .noiseGain = 7U, * .enableNoiseDetectOR = true, * }; * @endcode * @param base PDM base pointer. * @param hwvadConfig internal filter status. * @param noiseConfig Voice activity detector noise filter configure structure pointer. * @param zcdConfig Voice activity detector zero cross detector configure structure pointer . * @param signalGain signal gain value. */ void PDM_SetHwvadInEnvelopeBasedMode(PDM_Type *base, const pdm_hwvad_config_t *hwvadConfig, const pdm_hwvad_noise_filter_t *noiseConfig, const pdm_hwvad_zero_cross_detector_t *zcdConfig, uint32_t signalGain); /*! * brief set HWVAD in energy based mode . * Recommand configurations, * code * static const pdm_hwvad_config_t hwvadConfig = { * .channel = 0, * .initializeTime = 10U, * .cicOverSampleRate = 0U, * .inputGain = 0U, * .frameTime = 10U, * .cutOffFreq = kPDM_HwvadHpfBypassed, * .enableFrameEnergy = true, * .enablePreFilter = true, }; * static const pdm_hwvad_noise_filter_t noiseFilterConfig = { * .enableAutoNoiseFilter = true, * .enableNoiseMin = false, * .enableNoiseDecimation = false, * .noiseFilterAdjustment = 0U, * .noiseGain = 7U, * .enableNoiseDetectOR = false, * }; * code * param base PDM base pointer. * param hwvadConfig internal filter status. * param noiseConfig Voice activity detector noise filter configure structure pointer. * param zcdConfig Voice activity detector zero cross detector configure structure pointer . * param signalGain signal gain value, signal gain value should be properly according to application. */ void PDM_SetHwvadInEnergyBasedMode(PDM_Type *base, const pdm_hwvad_config_t *hwvadConfig, const pdm_hwvad_noise_filter_t *noiseConfig, const pdm_hwvad_zero_cross_detector_t *zcdConfig, uint32_t signalGain); /*! * @brief Enable/Disable hwvad callback. * This function enable/disable the hwvad interrupt for the selected PDM peripheral. * * @param base Base address of the PDM peripheral. * @param vadCallback callback Pointer to store callback function, should be NULL when disable. * @param userData user data. * @param enable true is enable, false is disable. * @retval None. */ void PDM_EnableHwvadInterruptCallback(PDM_Type *base, pdm_hwvad_callback_t vadCallback, void *userData, bool enable); /*! @} */ #endif /*! * @name Transactional * @{ */ /*! * @brief Initializes the PDM handle. * * This function initializes the handle for the PDM transactional APIs. Call * this function once to get the handle initialized. * * @param base PDM base pointer. * @param handle PDM handle pointer. * @param callback Pointer to the user callback function. * @param userData User parameter passed to the callback function. */ void PDM_TransferCreateHandle(PDM_Type *base, pdm_handle_t *handle, pdm_transfer_callback_t callback, void *userData); /*! * @brief PDM set channel transfer config. * * @param base PDM base pointer. * @param handle PDM handle pointer. * @param channel PDM channel. * @param config channel config. * @param format data format, support data width configurations,_pdm_data_width. * @retval kStatus_PDM_ChannelConfig_Failed or kStatus_Success. */ status_t PDM_TransferSetChannelConfig( PDM_Type *base, pdm_handle_t *handle, uint32_t channel, const pdm_channel_config_t *config, uint32_t format); /*! * @brief Performs an interrupt non-blocking receive transfer on PDM. * * @note This API returns immediately after the transfer initiates. * Call the PDM_RxGetTransferStatusIRQ to poll the transfer status and check whether * the transfer is finished. If the return status is not kStatus_PDM_Busy, the transfer * is finished. * * @param base PDM base pointer * @param handle Pointer to the pdm_handle_t structure which stores the transfer state. * @param xfer Pointer to the pdm_transfer_t structure. * @retval kStatus_Success Successfully started the data receive. * @retval kStatus_PDM_Busy Previous receive still not finished. */ status_t PDM_TransferReceiveNonBlocking(PDM_Type *base, pdm_handle_t *handle, pdm_transfer_t *xfer); /*! * @brief Aborts the current IRQ receive. * * @note This API can be called when an interrupt non-blocking transfer initiates * to abort the transfer early. * * @param base PDM base pointer * @param handle Pointer to the pdm_handle_t structure which stores the transfer state. */ void PDM_TransferAbortReceive(PDM_Type *base, pdm_handle_t *handle); /*! * @brief Tx interrupt handler. * * @param base PDM base pointer. * @param handle Pointer to the pdm_handle_t structure. */ void PDM_TransferHandleIRQ(PDM_Type *base, pdm_handle_t *handle); /*! @} */ #if defined(__cplusplus) } #endif /*_cplusplus*/ /*! @} */ #endif /* _FSL_PDM_H_ */