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Diffstat (limited to 'drivers/include/fsl_sai.h')
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diff --git a/drivers/include/fsl_sai.h b/drivers/include/fsl_sai.h new file mode 100644 index 0000000..d40c575 --- /dev/null +++ b/drivers/include/fsl_sai.h @@ -0,0 +1,849 @@ +/* + * Copyright (c) 2015, Freescale Semiconductor, Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * o Redistributions of source code must retain the above copyright notice, this list + * of conditions and the following disclaimer. + * + * o Redistributions in binary form must reproduce the above copyright notice, this + * list of conditions and the following disclaimer in the documentation and/or + * other materials provided with the distribution. + * + * o Neither the name of Freescale Semiconductor, Inc. nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON + * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef _FSL_SAI_H_ +#define _FSL_SAI_H_ + +#include "fsl_common.h" + +/*! + * @addtogroup sai + * @{ + */ + + +/******************************************************************************* + * Definitions + ******************************************************************************/ + +/*! @name Driver version */ +/*@{*/ +#define FSL_SAI_DRIVER_VERSION (MAKE_VERSION(2, 1, 1)) /*!< Version 2.1.1 */ +/*@}*/ + +/*! @brief SAI return status*/ +enum _sai_status_t +{ + kStatus_SAI_TxBusy = MAKE_STATUS(kStatusGroup_SAI, 0), /*!< SAI Tx is busy. */ + kStatus_SAI_RxBusy = MAKE_STATUS(kStatusGroup_SAI, 1), /*!< SAI Rx is busy. */ + kStatus_SAI_TxError = MAKE_STATUS(kStatusGroup_SAI, 2), /*!< SAI Tx FIFO error. */ + kStatus_SAI_RxError = MAKE_STATUS(kStatusGroup_SAI, 3), /*!< SAI Rx FIFO error. */ + kStatus_SAI_QueueFull = MAKE_STATUS(kStatusGroup_SAI, 4), /*!< SAI transfer queue is full. */ + kStatus_SAI_TxIdle = MAKE_STATUS(kStatusGroup_SAI, 5), /*!< SAI Tx is idle */ + kStatus_SAI_RxIdle = MAKE_STATUS(kStatusGroup_SAI, 6) /*!< SAI Rx is idle */ +}; + +/*! @brief Define the SAI bus type */ +typedef enum _sai_protocol +{ + kSAI_BusLeftJustified = 0x0U, /*!< Uses left justified format.*/ + kSAI_BusRightJustified, /*!< Uses right justified format. */ + kSAI_BusI2S, /*!< Uses I2S format. */ + kSAI_BusPCMA, /*!< Uses I2S PCM A format.*/ + kSAI_BusPCMB /*!< Uses I2S PCM B format. */ +} sai_protocol_t; + +/*! @brief Master or slave mode */ +typedef enum _sai_master_slave +{ + kSAI_Master = 0x0U, /*!< Master mode */ + kSAI_Slave = 0x1U /*!< Slave mode */ +} sai_master_slave_t; + +/*! @brief Mono or stereo audio format */ +typedef enum _sai_mono_stereo +{ + kSAI_Stereo = 0x0U, /*!< Stereo sound. */ + kSAI_MonoLeft, /*!< Only left channel have sound. */ + kSAI_MonoRight /*!< Only Right channel have sound. */ +} sai_mono_stereo_t; + +/*! @brief Synchronous or asynchronous mode */ +typedef enum _sai_sync_mode +{ + kSAI_ModeAsync = 0x0U, /*!< Asynchronous mode */ + kSAI_ModeSync, /*!< Synchronous mode (with receiver or transmit) */ + kSAI_ModeSyncWithOtherTx, /*!< Synchronous with another SAI transmit */ + kSAI_ModeSyncWithOtherRx /*!< Synchronous with another SAI receiver */ +} sai_sync_mode_t; + +/*! @brief Mater clock source */ +typedef enum _sai_mclk_source +{ + kSAI_MclkSourceSysclk = 0x0U, /*!< Master clock from the system clock */ + kSAI_MclkSourceSelect1, /*!< Master clock from source 1 */ + kSAI_MclkSourceSelect2, /*!< Master clock from source 2 */ + kSAI_MclkSourceSelect3 /*!< Master clock from source 3 */ +} sai_mclk_source_t; + +/*! @brief Bit clock source */ +typedef enum _sai_bclk_source +{ + kSAI_BclkSourceBusclk = 0x0U, /*!< Bit clock using bus clock */ + kSAI_BclkSourceMclkDiv, /*!< Bit clock using master clock divider */ + kSAI_BclkSourceOtherSai0, /*!< Bit clock from other SAI device */ + kSAI_BclkSourceOtherSai1 /*!< Bit clock from other SAI device */ +} sai_bclk_source_t; + +/*! @brief The SAI interrupt enable flag */ +enum _sai_interrupt_enable_t +{ + kSAI_WordStartInterruptEnable = + I2S_TCSR_WSIE_MASK, /*!< Word start flag, means the first word in a frame detected */ + kSAI_SyncErrorInterruptEnable = I2S_TCSR_SEIE_MASK, /*!< Sync error flag, means the sync error is detected */ + kSAI_FIFOWarningInterruptEnable = I2S_TCSR_FWIE_MASK, /*!< FIFO warning flag, means the FIFO is empty */ + kSAI_FIFOErrorInterruptEnable = I2S_TCSR_FEIE_MASK, /*!< FIFO error flag */ +#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1) + kSAI_FIFORequestInterruptEnable = I2S_TCSR_FRIE_MASK, /*!< FIFO request, means reached watermark */ +#endif /* FSL_FEATURE_SAI_FIFO_COUNT */ +}; + +/*! @brief The DMA request sources */ +enum _sai_dma_enable_t +{ + kSAI_FIFOWarningDMAEnable = I2S_TCSR_FWDE_MASK, /*!< FIFO warning caused by the DMA request */ +#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1) + kSAI_FIFORequestDMAEnable = I2S_TCSR_FRDE_MASK, /*!< FIFO request caused by the DMA request */ +#endif /* FSL_FEATURE_SAI_FIFO_COUNT */ +}; + +/*! @brief The SAI status flag */ +enum _sai_flags +{ + kSAI_WordStartFlag = I2S_TCSR_WSF_MASK, /*!< Word start flag, means the first word in a frame detected */ + kSAI_SyncErrorFlag = I2S_TCSR_SEF_MASK, /*!< Sync error flag, means the sync error is detected */ + kSAI_FIFOErrorFlag = I2S_TCSR_FEF_MASK, /*!< FIFO error flag */ +#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1) + kSAI_FIFORequestFlag = I2S_TCSR_FRF_MASK, /*!< FIFO request flag. */ +#endif /* FSL_FEATURE_SAI_FIFO_COUNT */ + kSAI_FIFOWarningFlag = I2S_TCSR_FWF_MASK, /*!< FIFO warning flag */ +}; + +/*! @brief The reset type */ +typedef enum _sai_reset_type +{ + kSAI_ResetTypeSoftware = I2S_TCSR_SR_MASK, /*!< Software reset, reset the logic state */ + kSAI_ResetTypeFIFO = I2S_TCSR_FR_MASK, /*!< FIFO reset, reset the FIFO read and write pointer */ + kSAI_ResetAll = I2S_TCSR_SR_MASK | I2S_TCSR_FR_MASK /*!< All reset. */ +} sai_reset_type_t; + +#if defined(FSL_FEATURE_SAI_HAS_FIFO_PACKING) && FSL_FEATURE_SAI_HAS_FIFO_PACKING +/*! + * @brief The SAI packing mode + * The mode includes 8 bit and 16 bit packing. + */ +typedef enum _sai_fifo_packing +{ + kSAI_FifoPackingDisabled = 0x0U, /*!< Packing disabled */ + kSAI_FifoPacking8bit = 0x2U, /*!< 8 bit packing enabled */ + kSAI_FifoPacking16bit = 0x3U /*!< 16bit packing enabled */ +} sai_fifo_packing_t; +#endif /* FSL_FEATURE_SAI_HAS_FIFO_PACKING */ + +/*! @brief SAI user configuration structure */ +typedef struct _sai_config +{ + sai_protocol_t protocol; /*!< Audio bus protocol in SAI */ + sai_sync_mode_t syncMode; /*!< SAI sync mode, control Tx/Rx clock sync */ +#if defined(FSL_FEATURE_SAI_HAS_MCR) && (FSL_FEATURE_SAI_HAS_MCR) + bool mclkOutputEnable; /*!< Master clock output enable, true means master clock divider enabled */ +#endif /* FSL_FEATURE_SAI_HAS_MCR */ + sai_mclk_source_t mclkSource; /*!< Master Clock source */ + sai_bclk_source_t bclkSource; /*!< Bit Clock source */ + sai_master_slave_t masterSlave; /*!< Master or slave */ +} sai_config_t; + +/*!@brief SAI transfer queue size, user can refine it according to use case. */ +#define SAI_XFER_QUEUE_SIZE (4) + +/*! @brief Audio sample rate */ +typedef enum _sai_sample_rate +{ + kSAI_SampleRate8KHz = 8000U, /*!< Sample rate 8000 Hz */ + kSAI_SampleRate11025Hz = 11025U, /*!< Sample rate 11025 Hz */ + kSAI_SampleRate12KHz = 12000U, /*!< Sample rate 12000 Hz */ + kSAI_SampleRate16KHz = 16000U, /*!< Sample rate 16000 Hz */ + kSAI_SampleRate22050Hz = 22050U, /*!< Sample rate 22050 Hz */ + kSAI_SampleRate24KHz = 24000U, /*!< Sample rate 24000 Hz */ + kSAI_SampleRate32KHz = 32000U, /*!< Sample rate 32000 Hz */ + kSAI_SampleRate44100Hz = 44100U, /*!< Sample rate 44100 Hz */ + kSAI_SampleRate48KHz = 48000U, /*!< Sample rate 48000 Hz */ + kSAI_SampleRate96KHz = 96000U /*!< Sample rate 96000 Hz */ +} sai_sample_rate_t; + +/*! @brief Audio word width */ +typedef enum _sai_word_width +{ + kSAI_WordWidth8bits = 8U, /*!< Audio data width 8 bits */ + kSAI_WordWidth16bits = 16U, /*!< Audio data width 16 bits */ + kSAI_WordWidth24bits = 24U, /*!< Audio data width 24 bits */ + kSAI_WordWidth32bits = 32U /*!< Audio data width 32 bits */ +} sai_word_width_t; + +/*! @brief sai transfer format */ +typedef struct _sai_transfer_format +{ + uint32_t sampleRate_Hz; /*!< Sample rate of audio data */ + uint32_t bitWidth; /*!< Data length of audio data, usually 8/16/24/32 bits */ + sai_mono_stereo_t stereo; /*!< Mono or stereo */ + uint32_t masterClockHz; /*!< Master clock frequency in Hz */ +#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1) + uint8_t watermark; /*!< Watermark value */ +#endif /* FSL_FEATURE_SAI_FIFO_COUNT */ + uint8_t channel; /*!< Data channel used in transfer.*/ + sai_protocol_t protocol; /*!< Which audio protocol used */ +} sai_transfer_format_t; + +/*! @brief SAI transfer structure */ +typedef struct _sai_transfer +{ + uint8_t *data; /*!< Data start address to transfer. */ + size_t dataSize; /*!< Transfer size. */ +} sai_transfer_t; + +typedef struct _sai_handle sai_handle_t; + +/*! @brief SAI transfer callback prototype */ +typedef void (*sai_transfer_callback_t)(I2S_Type *base, sai_handle_t *handle, status_t status, void *userData); + +/*! @brief SAI handle structure */ +struct _sai_handle +{ + uint32_t state; /*!< Transfer status */ + sai_transfer_callback_t callback; /*!< Callback function called at transfer event*/ + void *userData; /*!< Callback parameter passed to callback function*/ + uint8_t bitWidth; /*!< Bit width for transfer, 8/16/24/32 bits */ + uint8_t channel; /*!< Transfer channel */ + sai_transfer_t saiQueue[SAI_XFER_QUEUE_SIZE]; /*!< Transfer queue storing queued transfer */ + size_t transferSize[SAI_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 */ +#if defined(FSL_FEATURE_SAI_FIFO_COUNT) && (FSL_FEATURE_SAI_FIFO_COUNT > 1) + uint8_t watermark; /*!< Watermark value */ +#endif +}; + +/******************************************************************************* + * API + ******************************************************************************/ + +#if defined(__cplusplus) +extern "C" { +#endif /*_cplusplus*/ + +/*! + * @name Initialization and deinitialization + * @{ + */ + +/*! + * @brief Initializes the SAI Tx peripheral. + * + * Ungates the SAI clock, resets the module, and configures SAI Tx with a configuration structure. + * The configuration structure can be custom filled or set with default values by + * SAI_TxGetDefaultConfig(). + * + * @note This API should be called at the beginning of the application to use + * the SAI driver. Otherwise, accessing the SAIM module can cause a hard fault + * because the clock is not enabled. + * + * @param base SAI base pointer + * @param config SAI configuration structure. +*/ +void SAI_TxInit(I2S_Type *base, const sai_config_t *config); + +/*! + * @brief Initializes the the SAI Rx peripheral. + * + * Ungates the SAI clock, resets the module, and configures the SAI Rx with a configuration structure. + * The configuration structure can be custom filled or set with default values by + * SAI_RxGetDefaultConfig(). + * + * @note This API should be called at the beginning of the application to use + * the SAI driver. Otherwise, accessing the SAI module can cause a hard fault + * because the clock is not enabled. + * + * @param base SAI base pointer + * @param config SAI configuration structure. + */ +void SAI_RxInit(I2S_Type *base, const sai_config_t *config); + +/*! + * @brief Sets the SAI Tx configuration structure to default values. + * + * This API initializes the configuration structure for use in SAI_TxConfig(). + * The initialized structure can remain unchanged in SAI_TxConfig(), or it can be modified + * before calling SAI_TxConfig(). + * Example: + @code + sai_config_t config; + SAI_TxGetDefaultConfig(&config); + @endcode + * + * @param config pointer to master configuration structure + */ +void SAI_TxGetDefaultConfig(sai_config_t *config); + +/*! + * @brief Sets the SAI Rx configuration structure to default values. + * + * This API initializes the configuration structure for use in SAI_RxConfig(). + * The initialized structure can remain unchanged in SAI_RxConfig() or it can be modified + * before calling SAI_RxConfig(). + * Example: + @code + sai_config_t config; + SAI_RxGetDefaultConfig(&config); + @endcode + * + * @param config pointer to master configuration structure + */ +void SAI_RxGetDefaultConfig(sai_config_t *config); + +/*! + * @brief De-initializes the SAI peripheral. + * + * This API gates the SAI clock. The SAI module can't operate unless SAI_TxInit + * or SAI_RxInit is called to enable the clock. + * + * @param base SAI base pointer +*/ +void SAI_Deinit(I2S_Type *base); + +/*! + * @brief Resets the SAI Tx. + * + * This function enables the software reset and FIFO reset of SAI Tx. After reset, clear the reset bit. + * + * @param base SAI base pointer + */ +void SAI_TxReset(I2S_Type *base); + +/*! + * @brief Resets the SAI Rx. + * + * This function enables the software reset and FIFO reset of SAI Rx. After reset, clear the reset bit. + * + * @param base SAI base pointer + */ +void SAI_RxReset(I2S_Type *base); + +/*! + * @brief Enables/disables SAI Tx. + * + * @param base SAI base pointer + * @param enable True means enable SAI Tx, false means disable. + */ +void SAI_TxEnable(I2S_Type *base, bool enable); + +/*! + * @brief Enables/disables SAI Rx. + * + * @param base SAI base pointer + * @param enable True means enable SAI Rx, false means disable. + */ +void SAI_RxEnable(I2S_Type *base, bool enable); + +/*! @} */ + +/*! + * @name Status + * @{ + */ + +/*! + * @brief Gets the SAI Tx status flag state. + * + * @param base SAI base pointer + * @return SAI Tx status flag value. Use the Status Mask to get the status value needed. + */ +static inline uint32_t SAI_TxGetStatusFlag(I2S_Type *base) +{ + return base->TCSR; +} + +/*! + * @brief Clears the SAI Tx status flag state. + * + * @param base SAI base pointer + * @param mask State mask. It can be a combination of the following source if defined: + * @arg kSAI_WordStartFlag + * @arg kSAI_SyncErrorFlag + * @arg kSAI_FIFOErrorFlag + */ +static inline void SAI_TxClearStatusFlags(I2S_Type *base, uint32_t mask) +{ + base->TCSR = ((base->TCSR & 0xFFE3FFFFU) | mask); +} + +/*! + * @brief Gets the SAI Tx status flag state. + * + * @param base SAI base pointer + * @return SAI Rx status flag value. Use the Status Mask to get the status value needed. + */ +static inline uint32_t SAI_RxGetStatusFlag(I2S_Type *base) +{ + return base->RCSR; +} + +/*! + * @brief Clears the SAI Rx status flag state. + * + * @param base SAI base pointer + * @param mask State mask. It can be a combination of the following source if defined: + * @arg kSAI_WordStartFlag + * @arg kSAI_SyncErrorFlag + * @arg kSAI_FIFOErrorFlag + */ +static inline void SAI_RxClearStatusFlags(I2S_Type *base, uint32_t mask) +{ + base->RCSR = ((base->RCSR & 0xFFE3FFFFU) | mask); +} + +/*! @} */ + +/*! + * @name Interrupts + * @{ + */ + +/*! + * @brief Enables SAI Tx interrupt requests. + * + * @param base SAI base pointer + * @param mask interrupt source + * The parameter can be a combination of the following source if defined: + * @arg kSAI_WordStartInterruptEnable + * @arg kSAI_SyncErrorInterruptEnable + * @arg kSAI_FIFOWarningInterruptEnable + * @arg kSAI_FIFORequestInterruptEnable + * @arg kSAI_FIFOErrorInterruptEnable + */ +static inline void SAI_TxEnableInterrupts(I2S_Type *base, uint32_t mask) +{ + base->TCSR = ((base->TCSR & 0xFFE3FFFFU) | mask); +} + +/*! + * @brief Enables SAI Rx interrupt requests. + * + * @param base SAI base pointer + * @param mask interrupt source + * The parameter can be a combination of the following source if defined: + * @arg kSAI_WordStartInterruptEnable + * @arg kSAI_SyncErrorInterruptEnable + * @arg kSAI_FIFOWarningInterruptEnable + * @arg kSAI_FIFORequestInterruptEnable + * @arg kSAI_FIFOErrorInterruptEnable + */ +static inline void SAI_RxEnableInterrupts(I2S_Type *base, uint32_t mask) +{ + base->RCSR = ((base->RCSR & 0xFFE3FFFFU) | mask); +} + +/*! + * @brief Disables SAI Tx interrupt requests. + * + * @param base SAI base pointer + * @param mask interrupt source + * The parameter can be a combination of the following source if defined: + * @arg kSAI_WordStartInterruptEnable + * @arg kSAI_SyncErrorInterruptEnable + * @arg kSAI_FIFOWarningInterruptEnable + * @arg kSAI_FIFORequestInterruptEnable + * @arg kSAI_FIFOErrorInterruptEnable + */ +static inline void SAI_TxDisableInterrupts(I2S_Type *base, uint32_t mask) +{ + base->TCSR = ((base->TCSR & 0xFFE3FFFFU) & (~mask)); +} + +/*! + * @brief Disables SAI Rx interrupt requests. + * + * @param base SAI base pointer + * @param mask interrupt source + * The parameter can be a combination of the following source if defined: + * @arg kSAI_WordStartInterruptEnable + * @arg kSAI_SyncErrorInterruptEnable + * @arg kSAI_FIFOWarningInterruptEnable + * @arg kSAI_FIFORequestInterruptEnable + * @arg kSAI_FIFOErrorInterruptEnable + */ +static inline void SAI_RxDisableInterrupts(I2S_Type *base, uint32_t mask) +{ + base->RCSR = ((base->RCSR & 0xFFE3FFFFU) & (~mask)); +} + +/*! @} */ + +/*! + * @name DMA Control + * @{ + */ + +/*! + * @brief Enables/disables SAI Tx DMA requests. + * @param base SAI base pointer + * @param mask DMA source + * The parameter can be combination of the following source if defined: + * @arg kSAI_FIFOWarningDMAEnable + * @arg kSAI_FIFORequestDMAEnable + * @param enable True means enable DMA, false means disable DMA. + */ +static inline void SAI_TxEnableDMA(I2S_Type *base, uint32_t mask, bool enable) +{ + if (enable) + { + base->TCSR = ((base->TCSR & 0xFFE3FFFFU) | mask); + } + else + { + base->TCSR = ((base->TCSR & 0xFFE3FFFFU) & (~mask)); + } +} + +/*! + * @brief Enables/disables SAI Rx DMA requests. + * @param base SAI base pointer + * @param mask DMA source + * The parameter can be a combination of the following source if defined: + * @arg kSAI_FIFOWarningDMAEnable + * @arg kSAI_FIFORequestDMAEnable + * @param enable True means enable DMA, false means disable DMA. + */ +static inline void SAI_RxEnableDMA(I2S_Type *base, uint32_t mask, bool enable) +{ + if (enable) + { + base->RCSR = ((base->RCSR & 0xFFE3FFFFU) | mask); + } + else + { + base->RCSR = ((base->RCSR & 0xFFE3FFFFU) & (~mask)); + } +} + +/*! + * @brief Gets the SAI Tx data register address. + * + * This API is used to provide a transfer address for SAI DMA transfer configuration. + * + * @param base SAI base pointer. + * @param channel Which data channel used. + * @return data register address. + */ +static inline uint32_t SAI_TxGetDataRegisterAddress(I2S_Type *base, uint32_t channel) +{ + return (uint32_t)(&(base->TDR)[channel]); +} + +/*! + * @brief Gets the SAI Rx data register address. + * + * This API is used to provide a transfer address for SAI DMA transfer configuration. + * + * @param base SAI base pointer. + * @param channel Which data channel used. + * @return data register address. + */ +static inline uint32_t SAI_RxGetDataRegisterAddress(I2S_Type *base, uint32_t channel) +{ + return (uint32_t)(&(base->RDR)[channel]); +} + +/*! @} */ + +/*! + * @name Bus Operations + * @{ + */ + +/*! + * @brief Configures the SAI Tx audio format. + * + * The audio format can be changed at run-time. This function configures the sample rate and audio data + * format to be transferred. + * + * @param base SAI base pointer. + * @param format Pointer to SAI audio data format structure. + * @param mclkSourceClockHz SAI master clock source frequency in Hz. + * @param bclkSourceClockHz SAI bit clock source frequency in Hz. If bit clock source is master + * clock, this value should equals to masterClockHz in format. +*/ +void SAI_TxSetFormat(I2S_Type *base, + sai_transfer_format_t *format, + uint32_t mclkSourceClockHz, + uint32_t bclkSourceClockHz); + +/*! + * @brief Configures the SAI Rx audio format. + * + * The audio format can be changed at run-time. This function configures the sample rate and audio data + * format to be transferred. + * + * @param base SAI base pointer. + * @param format Pointer to SAI audio data format structure. + * @param mclkSourceClockHz SAI master clock source frequency in Hz. + * @param bclkSourceClockHz SAI bit clock source frequency in Hz. If bit clock source is master + * clock, this value should equals to masterClockHz in format. +*/ +void SAI_RxSetFormat(I2S_Type *base, + sai_transfer_format_t *format, + uint32_t mclkSourceClockHz, + uint32_t bclkSourceClockHz); + +/*! + * @brief Sends data using a blocking method. + * + * @note This function blocks by polling until data is ready to be sent. + * + * @param base SAI base pointer. + * @param channel Data channel used. + * @param bitWidth How many bits in a audio word, usually 8/16/24/32 bits. + * @param buffer Pointer to the data to be written. + * @param size Bytes to be written. + */ +void SAI_WriteBlocking(I2S_Type *base, uint32_t channel, uint32_t bitWidth, uint8_t *buffer, uint32_t size); + +/*! + * @brief Writes data into SAI FIFO. + * + * @param base SAI base pointer. + * @param channel Data channel used. + * @param data Data needs to be written. + */ +static inline void SAI_WriteData(I2S_Type *base, uint32_t channel, uint32_t data) +{ + base->TDR[channel] = data; +} + +/*! + * @brief Receives data using a blocking method. + * + * @note This function blocks by polling until data is ready to be sent. + * + * @param base SAI base pointer. + * @param channel Data channel used. + * @param bitWidth How many bits in a audio word, usually 8/16/24/32 bits. + * @param buffer Pointer to the data to be read. + * @param size Bytes to be read. + */ +void SAI_ReadBlocking(I2S_Type *base, uint32_t channel, uint32_t bitWidth, uint8_t *buffer, uint32_t size); + +/*! + * @brief Reads data from SAI FIFO. + * + * @param base SAI base pointer. + * @param channel Data channel used. + * @return Data in SAI FIFO. + */ +static inline uint32_t SAI_ReadData(I2S_Type *base, uint32_t channel) +{ + return base->RDR[channel]; +} + +/*! @} */ + +/*! + * @name Transactional + * @{ + */ + +/*! + * @brief Initializes the SAI Tx handle. + * + * This function initializes the Tx handle for SAI Tx transactional APIs. Call + * this function one time to get the handle initialized. + * + * @param base SAI base pointer + * @param handle SAI handle pointer. + * @param callback pointer to user callback function + * @param userData user parameter passed to the callback function + */ +void SAI_TransferTxCreateHandle(I2S_Type *base, sai_handle_t *handle, sai_transfer_callback_t callback, void *userData); + +/*! + * @brief Initializes the SAI Rx handle. + * + * This function initializes the Rx handle for SAI Rx transactional APIs. Call + * this function one time to get the handle initialized. + * + * @param base SAI base pointer. + * @param handle SAI handle pointer. + * @param callback pointer to user callback function + * @param userData user parameter passed to the callback function + */ +void SAI_TransferRxCreateHandle(I2S_Type *base, sai_handle_t *handle, sai_transfer_callback_t callback, void *userData); + +/*! + * @brief Configures the SAI Tx audio format. + * + * The audio format can be changed at run-time. This function configures the sample rate and audio data + * format to be transferred. + * + * @param base SAI base pointer. + * @param handle SAI handle pointer. + * @param format Pointer to SAI audio data format structure. + * @param mclkSourceClockHz SAI master clock source frequency in Hz. + * @param bclkSourceClockHz SAI bit clock source frequency in Hz. If a bit clock source is a master + * clock, this value should equal to masterClockHz in format. + * @return Status of this function. Return value is one of status_t. +*/ +status_t SAI_TransferTxSetFormat(I2S_Type *base, + sai_handle_t *handle, + sai_transfer_format_t *format, + uint32_t mclkSourceClockHz, + uint32_t bclkSourceClockHz); + +/*! + * @brief Configures the SAI Rx audio format. + * + * The audio format can be changed at run-time. This function configures the sample rate and audio data + * format to be transferred. + * + * @param base SAI base pointer. + * @param handle SAI handle pointer. + * @param format Pointer to SAI audio data format structure. + * @param mclkSourceClockHz SAI master clock source frequency in Hz. + * @param bclkSourceClockHz SAI bit clock source frequency in Hz. If bit clock source is master + * clock, this value should equals to masterClockHz in format. + * @return Status of this function. Return value is one of status_t. +*/ +status_t SAI_TransferRxSetFormat(I2S_Type *base, + sai_handle_t *handle, + sai_transfer_format_t *format, + uint32_t mclkSourceClockHz, + uint32_t bclkSourceClockHz); + +/*! + * @brief Performs an interrupt non-blocking send transfer on SAI. + * + * @note This API returns immediately after the transfer initiates. + * Call the SAI_TxGetTransferStatusIRQ to poll the transfer status and check whether + * the transfer is finished. If the return status is not kStatus_SAI_Busy, the transfer + * is finished. + * + * @param base SAI base pointer + * @param handle pointer to sai_handle_t structure which stores the transfer state + * @param xfer pointer to sai_transfer_t structure + * @retval kStatus_Success Successfully started the data receive. + * @retval kStatus_SAI_TxBusy Previous receive still not finished. + * @retval kStatus_InvalidArgument The input parameter is invalid. + */ +status_t SAI_TransferSendNonBlocking(I2S_Type *base, sai_handle_t *handle, sai_transfer_t *xfer); + +/*! + * @brief Performs an interrupt non-blocking receive transfer on SAI. + * + * @note This API returns immediately after the transfer initiates. + * Call the SAI_RxGetTransferStatusIRQ to poll the transfer status and check whether + * the transfer is finished. If the return status is not kStatus_SAI_Busy, the transfer + * is finished. + * + * @param base SAI base pointer + * @param handle pointer to sai_handle_t structure which stores the transfer state + * @param xfer pointer to sai_transfer_t structure + * @retval kStatus_Success Successfully started the data receive. + * @retval kStatus_SAI_RxBusy Previous receive still not finished. + * @retval kStatus_InvalidArgument The input parameter is invalid. + */ +status_t SAI_TransferReceiveNonBlocking(I2S_Type *base, sai_handle_t *handle, sai_transfer_t *xfer); + +/*! + * @brief Gets a set byte count. + * + * @param base SAI base pointer. + * @param handle pointer to sai_handle_t structure which stores the transfer state. + * @param count Bytes count sent. + * @retval kStatus_Success Succeed get the transfer count. + * @retval kStatus_NoTransferInProgress There is not a non-blocking transaction currently in progress. + */ +status_t SAI_TransferGetSendCount(I2S_Type *base, sai_handle_t *handle, size_t *count); + +/*! + * @brief Gets a received byte count. + * + * @param base SAI base pointer. + * @param handle pointer to sai_handle_t structure which stores the transfer state. + * @param count Bytes count received. + * @retval kStatus_Success Succeed get the transfer count. + * @retval kStatus_NoTransferInProgress There is not a non-blocking transaction currently in progress. + */ +status_t SAI_TransferGetReceiveCount(I2S_Type *base, sai_handle_t *handle, size_t *count); + +/*! + * @brief Aborts the current send. + * + * @note This API can be called any time when an interrupt non-blocking transfer initiates + * to abort the transfer early. + * + * @param base SAI base pointer. + * @param handle pointer to sai_handle_t structure which stores the transfer state. + */ +void SAI_TransferAbortSend(I2S_Type *base, sai_handle_t *handle); + +/*! + * @brief Aborts the the current IRQ receive. + * + * @note This API can be called any time when an interrupt non-blocking transfer initiates + * to abort the transfer early. + * + * @param base SAI base pointer + * @param handle pointer to sai_handle_t structure which stores the transfer state. + */ +void SAI_TransferAbortReceive(I2S_Type *base, sai_handle_t *handle); + +/*! + * @brief Tx interrupt handler. + * + * @param base SAI base pointer. + * @param handle pointer to sai_handle_t structure. + */ +void SAI_TransferTxHandleIRQ(I2S_Type *base, sai_handle_t *handle); + +/*! + * @brief Tx interrupt handler. + * + * @param base SAI base pointer. + * @param handle pointer to sai_handle_t structure. + */ +void SAI_TransferRxHandleIRQ(I2S_Type *base, sai_handle_t *handle); + +/*! @} */ + +#if defined(__cplusplus) +} +#endif /*_cplusplus*/ + +/*! @} */ + +#endif /* _FSL_SAI_H_ */ |