/* * The Clear BSD License * Copyright (c) 2015, Freescale Semiconductor, Inc. * Copyright 2016-2017 NXP * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, * are permitted (subject to the limitations in the disclaimer below) 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 the copyright holder nor the names of its * contributors may be used to endorse or promote products derived from this * software without specific prior written permission. * * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. * 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_DSPI_H_ #define _FSL_DSPI_H_ #include "fsl_common.h" /*! * @addtogroup dspi_driver * @{ */ /********************************************************************************************************************** * Definitions *********************************************************************************************************************/ /*! @name Driver version */ /*@{*/ /*! @brief DSPI driver version 2.2.0. */ #define FSL_DSPI_DRIVER_VERSION (MAKE_VERSION(2, 2, 0)) /*@}*/ #ifndef DSPI_DUMMY_DATA /*! @brief DSPI dummy data if there is no Tx data.*/ #define DSPI_DUMMY_DATA (0x00U) /*!< Dummy data used for Tx if there is no txData. */ #endif /*! @brief Status for the DSPI driver.*/ enum _dspi_status { kStatus_DSPI_Busy = MAKE_STATUS(kStatusGroup_DSPI, 0), /*!< DSPI transfer is busy.*/ kStatus_DSPI_Error = MAKE_STATUS(kStatusGroup_DSPI, 1), /*!< DSPI driver error. */ kStatus_DSPI_Idle = MAKE_STATUS(kStatusGroup_DSPI, 2), /*!< DSPI is idle.*/ kStatus_DSPI_OutOfRange = MAKE_STATUS(kStatusGroup_DSPI, 3) /*!< DSPI transfer out of range. */ }; /*! @brief DSPI status flags in SPIx_SR register.*/ enum _dspi_flags { kDSPI_TxCompleteFlag = SPI_SR_TCF_MASK, /*!< Transfer Complete Flag. */ kDSPI_EndOfQueueFlag = SPI_SR_EOQF_MASK, /*!< End of Queue Flag.*/ kDSPI_TxFifoUnderflowFlag = SPI_SR_TFUF_MASK, /*!< Transmit FIFO Underflow Flag.*/ kDSPI_TxFifoFillRequestFlag = SPI_SR_TFFF_MASK, /*!< Transmit FIFO Fill Flag.*/ kDSPI_RxFifoOverflowFlag = SPI_SR_RFOF_MASK, /*!< Receive FIFO Overflow Flag.*/ kDSPI_RxFifoDrainRequestFlag = SPI_SR_RFDF_MASK, /*!< Receive FIFO Drain Flag.*/ kDSPI_TxAndRxStatusFlag = SPI_SR_TXRXS_MASK, /*!< The module is in Stopped/Running state.*/ kDSPI_AllStatusFlag = SPI_SR_TCF_MASK | SPI_SR_EOQF_MASK | SPI_SR_TFUF_MASK | SPI_SR_TFFF_MASK | SPI_SR_RFOF_MASK | SPI_SR_RFDF_MASK | SPI_SR_TXRXS_MASK /*!< All statuses above.*/ }; /*! @brief DSPI interrupt source.*/ enum _dspi_interrupt_enable { kDSPI_TxCompleteInterruptEnable = SPI_RSER_TCF_RE_MASK, /*!< TCF interrupt enable.*/ kDSPI_EndOfQueueInterruptEnable = SPI_RSER_EOQF_RE_MASK, /*!< EOQF interrupt enable.*/ kDSPI_TxFifoUnderflowInterruptEnable = SPI_RSER_TFUF_RE_MASK, /*!< TFUF interrupt enable.*/ kDSPI_TxFifoFillRequestInterruptEnable = SPI_RSER_TFFF_RE_MASK, /*!< TFFF interrupt enable, DMA disable.*/ kDSPI_RxFifoOverflowInterruptEnable = SPI_RSER_RFOF_RE_MASK, /*!< RFOF interrupt enable.*/ kDSPI_RxFifoDrainRequestInterruptEnable = SPI_RSER_RFDF_RE_MASK, /*!< RFDF interrupt enable, DMA disable.*/ kDSPI_AllInterruptEnable = SPI_RSER_TCF_RE_MASK | SPI_RSER_EOQF_RE_MASK | SPI_RSER_TFUF_RE_MASK | SPI_RSER_TFFF_RE_MASK | SPI_RSER_RFOF_RE_MASK | SPI_RSER_RFDF_RE_MASK /*!< All above interrupts enable.*/ }; /*! @brief DSPI DMA source.*/ enum _dspi_dma_enable { kDSPI_TxDmaEnable = (SPI_RSER_TFFF_RE_MASK | SPI_RSER_TFFF_DIRS_MASK), /*!< TFFF flag generates DMA requests. No Tx interrupt request. */ kDSPI_RxDmaEnable = (SPI_RSER_RFDF_RE_MASK | SPI_RSER_RFDF_DIRS_MASK) /*!< RFDF flag generates DMA requests. No Rx interrupt request. */ }; /*! @brief DSPI master or slave mode configuration.*/ typedef enum _dspi_master_slave_mode { kDSPI_Master = 1U, /*!< DSPI peripheral operates in master mode.*/ kDSPI_Slave = 0U /*!< DSPI peripheral operates in slave mode.*/ } dspi_master_slave_mode_t; /*! * @brief DSPI Sample Point: Controls when the DSPI master samples SIN in the Modified Transfer Format. This field is * valid * only when the CPHA bit in the CTAR register is 0. */ typedef enum _dspi_master_sample_point { kDSPI_SckToSin0Clock = 0U, /*!< 0 system clocks between SCK edge and SIN sample.*/ kDSPI_SckToSin1Clock = 1U, /*!< 1 system clock between SCK edge and SIN sample.*/ kDSPI_SckToSin2Clock = 2U /*!< 2 system clocks between SCK edge and SIN sample.*/ } dspi_master_sample_point_t; /*! @brief DSPI Peripheral Chip Select (Pcs) configuration (which Pcs to configure).*/ typedef enum _dspi_which_pcs_config { kDSPI_Pcs0 = 1U << 0, /*!< Pcs[0] */ kDSPI_Pcs1 = 1U << 1, /*!< Pcs[1] */ kDSPI_Pcs2 = 1U << 2, /*!< Pcs[2] */ kDSPI_Pcs3 = 1U << 3, /*!< Pcs[3] */ kDSPI_Pcs4 = 1U << 4, /*!< Pcs[4] */ kDSPI_Pcs5 = 1U << 5 /*!< Pcs[5] */ } dspi_which_pcs_t; /*! @brief DSPI Peripheral Chip Select (Pcs) Polarity configuration.*/ typedef enum _dspi_pcs_polarity_config { kDSPI_PcsActiveHigh = 0U, /*!< Pcs Active High (idles low). */ kDSPI_PcsActiveLow = 1U /*!< Pcs Active Low (idles high). */ } dspi_pcs_polarity_config_t; /*! @brief DSPI Peripheral Chip Select (Pcs) Polarity.*/ enum _dspi_pcs_polarity { kDSPI_Pcs0ActiveLow = 1U << 0, /*!< Pcs0 Active Low (idles high). */ kDSPI_Pcs1ActiveLow = 1U << 1, /*!< Pcs1 Active Low (idles high). */ kDSPI_Pcs2ActiveLow = 1U << 2, /*!< Pcs2 Active Low (idles high). */ kDSPI_Pcs3ActiveLow = 1U << 3, /*!< Pcs3 Active Low (idles high). */ kDSPI_Pcs4ActiveLow = 1U << 4, /*!< Pcs4 Active Low (idles high). */ kDSPI_Pcs5ActiveLow = 1U << 5, /*!< Pcs5 Active Low (idles high). */ kDSPI_PcsAllActiveLow = 0xFFU /*!< Pcs0 to Pcs5 Active Low (idles high). */ }; /*! @brief DSPI clock polarity configuration for a given CTAR.*/ typedef enum _dspi_clock_polarity { kDSPI_ClockPolarityActiveHigh = 0U, /*!< CPOL=0. Active-high DSPI clock (idles low).*/ kDSPI_ClockPolarityActiveLow = 1U /*!< CPOL=1. Active-low DSPI clock (idles high).*/ } dspi_clock_polarity_t; /*! @brief DSPI clock phase configuration for a given CTAR.*/ typedef enum _dspi_clock_phase { kDSPI_ClockPhaseFirstEdge = 0U, /*!< CPHA=0. Data is captured on the leading edge of the SCK and changed on the following edge.*/ kDSPI_ClockPhaseSecondEdge = 1U /*!< CPHA=1. Data is changed on the leading edge of the SCK and captured on the following edge.*/ } dspi_clock_phase_t; /*! @brief DSPI data shifter direction options for a given CTAR.*/ typedef enum _dspi_shift_direction { kDSPI_MsbFirst = 0U, /*!< Data transfers start with most significant bit.*/ kDSPI_LsbFirst = 1U /*!< Data transfers start with least significant bit. Shifting out of LSB is not supported for slave */ } dspi_shift_direction_t; /*! @brief DSPI delay type selection.*/ typedef enum _dspi_delay_type { kDSPI_PcsToSck = 1U, /*!< Pcs-to-SCK delay. */ kDSPI_LastSckToPcs, /*!< The last SCK edge to Pcs delay. */ kDSPI_BetweenTransfer /*!< Delay between transfers. */ } dspi_delay_type_t; /*! @brief DSPI Clock and Transfer Attributes Register (CTAR) selection.*/ typedef enum _dspi_ctar_selection { kDSPI_Ctar0 = 0U, /*!< CTAR0 selection option for master or slave mode; note that CTAR0 and CTAR0_SLAVE are the same register address. */ kDSPI_Ctar1 = 1U, /*!< CTAR1 selection option for master mode only. */ kDSPI_Ctar2 = 2U, /*!< CTAR2 selection option for master mode only; note that some devices do not support CTAR2. */ kDSPI_Ctar3 = 3U, /*!< CTAR3 selection option for master mode only; note that some devices do not support CTAR3. */ kDSPI_Ctar4 = 4U, /*!< CTAR4 selection option for master mode only; note that some devices do not support CTAR4. */ kDSPI_Ctar5 = 5U, /*!< CTAR5 selection option for master mode only; note that some devices do not support CTAR5. */ kDSPI_Ctar6 = 6U, /*!< CTAR6 selection option for master mode only; note that some devices do not support CTAR6. */ kDSPI_Ctar7 = 7U /*!< CTAR7 selection option for master mode only; note that some devices do not support CTAR7. */ } dspi_ctar_selection_t; #define DSPI_MASTER_CTAR_SHIFT (0U) /*!< DSPI master CTAR shift macro; used internally. */ #define DSPI_MASTER_CTAR_MASK (0x0FU) /*!< DSPI master CTAR mask macro; used internally. */ #define DSPI_MASTER_PCS_SHIFT (4U) /*!< DSPI master PCS shift macro; used internally. */ #define DSPI_MASTER_PCS_MASK (0xF0U) /*!< DSPI master PCS mask macro; used internally. */ /*! @brief Use this enumeration for the DSPI master transfer configFlags. */ enum _dspi_transfer_config_flag_for_master { kDSPI_MasterCtar0 = 0U << DSPI_MASTER_CTAR_SHIFT, /*!< DSPI master transfer use CTAR0 setting. */ kDSPI_MasterCtar1 = 1U << DSPI_MASTER_CTAR_SHIFT, /*!< DSPI master transfer use CTAR1 setting. */ kDSPI_MasterCtar2 = 2U << DSPI_MASTER_CTAR_SHIFT, /*!< DSPI master transfer use CTAR2 setting. */ kDSPI_MasterCtar3 = 3U << DSPI_MASTER_CTAR_SHIFT, /*!< DSPI master transfer use CTAR3 setting. */ kDSPI_MasterCtar4 = 4U << DSPI_MASTER_CTAR_SHIFT, /*!< DSPI master transfer use CTAR4 setting. */ kDSPI_MasterCtar5 = 5U << DSPI_MASTER_CTAR_SHIFT, /*!< DSPI master transfer use CTAR5 setting. */ kDSPI_MasterCtar6 = 6U << DSPI_MASTER_CTAR_SHIFT, /*!< DSPI master transfer use CTAR6 setting. */ kDSPI_MasterCtar7 = 7U << DSPI_MASTER_CTAR_SHIFT, /*!< DSPI master transfer use CTAR7 setting. */ kDSPI_MasterPcs0 = 0U << DSPI_MASTER_PCS_SHIFT, /*!< DSPI master transfer use PCS0 signal. */ kDSPI_MasterPcs1 = 1U << DSPI_MASTER_PCS_SHIFT, /*!< DSPI master transfer use PCS1 signal. */ kDSPI_MasterPcs2 = 2U << DSPI_MASTER_PCS_SHIFT, /*!< DSPI master transfer use PCS2 signal.*/ kDSPI_MasterPcs3 = 3U << DSPI_MASTER_PCS_SHIFT, /*!< DSPI master transfer use PCS3 signal. */ kDSPI_MasterPcs4 = 4U << DSPI_MASTER_PCS_SHIFT, /*!< DSPI master transfer use PCS4 signal. */ kDSPI_MasterPcs5 = 5U << DSPI_MASTER_PCS_SHIFT, /*!< DSPI master transfer use PCS5 signal. */ kDSPI_MasterPcsContinuous = 1U << 20, /*!< Indicates whether the PCS signal is continuous. */ kDSPI_MasterActiveAfterTransfer = 1U << 21, /*!< Indicates whether the PCS signal is active after the last frame transfer.*/ }; #define DSPI_SLAVE_CTAR_SHIFT (0U) /*!< DSPI slave CTAR shift macro; used internally. */ #define DSPI_SLAVE_CTAR_MASK (0x07U) /*!< DSPI slave CTAR mask macro; used internally. */ /*! @brief Use this enumeration for the DSPI slave transfer configFlags. */ enum _dspi_transfer_config_flag_for_slave { kDSPI_SlaveCtar0 = 0U << DSPI_SLAVE_CTAR_SHIFT, /*!< DSPI slave transfer use CTAR0 setting. */ /*!< DSPI slave can only use PCS0. */ }; /*! @brief DSPI transfer state, which is used for DSPI transactional API state machine. */ enum _dspi_transfer_state { kDSPI_Idle = 0x0U, /*!< Nothing in the transmitter/receiver. */ kDSPI_Busy, /*!< Transfer queue is not finished. */ kDSPI_Error /*!< Transfer error. */ }; /*! @brief DSPI master command date configuration used for the SPIx_PUSHR.*/ typedef struct _dspi_command_data_config { bool isPcsContinuous; /*!< Option to enable the continuous assertion of the chip select between transfers.*/ dspi_ctar_selection_t whichCtar; /*!< The desired Clock and Transfer Attributes Register (CTAR) to use for CTAS.*/ dspi_which_pcs_t whichPcs; /*!< The desired PCS signal to use for the data transfer.*/ bool isEndOfQueue; /*!< Signals that the current transfer is the last in the queue.*/ bool clearTransferCount; /*!< Clears the SPI Transfer Counter (SPI_TCNT) before transmission starts.*/ } dspi_command_data_config_t; /*! @brief DSPI master ctar configuration structure.*/ typedef struct _dspi_master_ctar_config { uint32_t baudRate; /*!< Baud Rate for DSPI. */ uint32_t bitsPerFrame; /*!< Bits per frame, minimum 4, maximum 16.*/ dspi_clock_polarity_t cpol; /*!< Clock polarity. */ dspi_clock_phase_t cpha; /*!< Clock phase. */ dspi_shift_direction_t direction; /*!< MSB or LSB data shift direction. */ uint32_t pcsToSckDelayInNanoSec; /*!< PCS to SCK delay time in nanoseconds; setting to 0 sets the minimum delay. It also sets the boundary value if out of range.*/ uint32_t lastSckToPcsDelayInNanoSec; /*!< The last SCK to PCS delay time in nanoseconds; setting to 0 sets the minimum delay. It also sets the boundary value if out of range.*/ uint32_t betweenTransferDelayInNanoSec; /*!< After the SCK delay time in nanoseconds; setting to 0 sets the minimum delay. It also sets the boundary value if out of range.*/ } dspi_master_ctar_config_t; /*! @brief DSPI master configuration structure.*/ typedef struct _dspi_master_config { dspi_ctar_selection_t whichCtar; /*!< The desired CTAR to use. */ dspi_master_ctar_config_t ctarConfig; /*!< Set the ctarConfig to the desired CTAR. */ dspi_which_pcs_t whichPcs; /*!< The desired Peripheral Chip Select (pcs). */ dspi_pcs_polarity_config_t pcsActiveHighOrLow; /*!< The desired PCS active high or low. */ bool enableContinuousSCK; /*!< CONT_SCKE, continuous SCK enable. Note that the continuous SCK is only supported for CPHA = 1.*/ bool enableRxFifoOverWrite; /*!< ROOE, receive FIFO overflow overwrite enable. If ROOE = 0, the incoming data is ignored and the data from the transfer that generated the overflow is also ignored. If ROOE = 1, the incoming data is shifted to the shift register. */ bool enableModifiedTimingFormat; /*!< Enables a modified transfer format to be used if true.*/ dspi_master_sample_point_t samplePoint; /*!< Controls when the module master samples SIN in the Modified Transfer Format. It's valid only when CPHA=0. */ } dspi_master_config_t; /*! @brief DSPI slave ctar configuration structure.*/ typedef struct _dspi_slave_ctar_config { uint32_t bitsPerFrame; /*!< Bits per frame, minimum 4, maximum 16.*/ dspi_clock_polarity_t cpol; /*!< Clock polarity. */ dspi_clock_phase_t cpha; /*!< Clock phase. */ /*!< Slave only supports MSB and does not support LSB.*/ } dspi_slave_ctar_config_t; /*! @brief DSPI slave configuration structure.*/ typedef struct _dspi_slave_config { dspi_ctar_selection_t whichCtar; /*!< The desired CTAR to use. */ dspi_slave_ctar_config_t ctarConfig; /*!< Set the ctarConfig to the desired CTAR. */ bool enableContinuousSCK; /*!< CONT_SCKE, continuous SCK enable. Note that the continuous SCK is only supported for CPHA = 1.*/ bool enableRxFifoOverWrite; /*!< ROOE, receive FIFO overflow overwrite enable. If ROOE = 0, the incoming data is ignored and the data from the transfer that generated the overflow is also ignored. If ROOE = 1, the incoming data is shifted to the shift register. */ bool enableModifiedTimingFormat; /*!< Enables a modified transfer format to be used if true.*/ dspi_master_sample_point_t samplePoint; /*!< Controls when the module master samples SIN in the Modified Transfer Format. It's valid only when CPHA=0. */ } dspi_slave_config_t; /*! * @brief Forward declaration of the _dspi_master_handle typedefs. */ typedef struct _dspi_master_handle dspi_master_handle_t; /*! * @brief Forward declaration of the _dspi_slave_handle typedefs. */ typedef struct _dspi_slave_handle dspi_slave_handle_t; /*! * @brief Completion callback function pointer type. * * @param base DSPI peripheral address. * @param handle Pointer to the handle for the DSPI master. * @param status Success or error code describing whether the transfer completed. * @param userData Arbitrary pointer-dataSized value passed from the application. */ typedef void (*dspi_master_transfer_callback_t)(SPI_Type *base, dspi_master_handle_t *handle, status_t status, void *userData); /*! * @brief Completion callback function pointer type. * * @param base DSPI peripheral address. * @param handle Pointer to the handle for the DSPI slave. * @param status Success or error code describing whether the transfer completed. * @param userData Arbitrary pointer-dataSized value passed from the application. */ typedef void (*dspi_slave_transfer_callback_t)(SPI_Type *base, dspi_slave_handle_t *handle, status_t status, void *userData); /*! @brief DSPI master/slave transfer structure.*/ typedef struct _dspi_transfer { uint8_t *txData; /*!< Send buffer. */ uint8_t *rxData; /*!< Receive buffer. */ volatile size_t dataSize; /*!< Transfer bytes. */ uint32_t configFlags; /*!< Transfer transfer configuration flags; set from _dspi_transfer_config_flag_for_master if the transfer is used for master or _dspi_transfer_config_flag_for_slave enumeration if the transfer is used for slave.*/ } dspi_transfer_t; /*! @brief DSPI half-duplex(master) transfer structure */ typedef struct _dspi_half_duplex_transfer { uint8_t *txData; /*!< Send buffer */ uint8_t *rxData; /*!< Receive buffer */ size_t txDataSize; /*!< Transfer bytes for transmit */ size_t rxDataSize; /*!< Transfer bytes */ uint32_t configFlags; /*!< Transfer configuration flags; set from _dspi_transfer_config_flag_for_master. */ bool isPcsAssertInTransfer; /*!< If Pcs pin keep assert between transmit and receive. true for assert and false for deassert. */ bool isTransmitFirst; /*!< True for transmit first and false for receive first. */ } dspi_half_duplex_transfer_t; /*! @brief DSPI master transfer handle structure used for transactional API. */ struct _dspi_master_handle { uint32_t bitsPerFrame; /*!< The desired number of bits per frame. */ volatile uint32_t command; /*!< The desired data command. */ volatile uint32_t lastCommand; /*!< The desired last data command. */ uint8_t fifoSize; /*!< FIFO dataSize. */ volatile bool isPcsActiveAfterTransfer; /*!< Indicates whether the PCS signal is active after the last frame transfer.*/ volatile bool isThereExtraByte; /*!< Indicates whether there are extra bytes.*/ uint8_t *volatile txData; /*!< Send buffer. */ uint8_t *volatile rxData; /*!< Receive buffer. */ volatile size_t remainingSendByteCount; /*!< A number of bytes remaining to send.*/ volatile size_t remainingReceiveByteCount; /*!< A number of bytes remaining to receive.*/ size_t totalByteCount; /*!< A number of transfer bytes*/ volatile uint8_t state; /*!< DSPI transfer state, see _dspi_transfer_state.*/ dspi_master_transfer_callback_t callback; /*!< Completion callback. */ void *userData; /*!< Callback user data. */ }; /*! @brief DSPI slave transfer handle structure used for the transactional API. */ struct _dspi_slave_handle { uint32_t bitsPerFrame; /*!< The desired number of bits per frame. */ volatile bool isThereExtraByte; /*!< Indicates whether there are extra bytes.*/ uint8_t *volatile txData; /*!< Send buffer. */ uint8_t *volatile rxData; /*!< Receive buffer. */ volatile size_t remainingSendByteCount; /*!< A number of bytes remaining to send.*/ volatile size_t remainingReceiveByteCount; /*!< A number of bytes remaining to receive.*/ size_t totalByteCount; /*!< A number of transfer bytes*/ volatile uint8_t state; /*!< DSPI transfer state.*/ volatile uint32_t errorCount; /*!< Error count for slave transfer.*/ dspi_slave_transfer_callback_t callback; /*!< Completion callback. */ void *userData; /*!< Callback user data. */ }; /********************************************************************************************************************** * API *********************************************************************************************************************/ #if defined(__cplusplus) extern "C" { #endif /*_cplusplus*/ /*! * @name Initialization and deinitialization * @{ */ /*! * @brief Initializes the DSPI master. * * This function initializes the DSPI master configuration. This is an example use case. * @code * dspi_master_config_t masterConfig; * masterConfig.whichCtar = kDSPI_Ctar0; * masterConfig.ctarConfig.baudRate = 500000000U; * masterConfig.ctarConfig.bitsPerFrame = 8; * masterConfig.ctarConfig.cpol = kDSPI_ClockPolarityActiveHigh; * masterConfig.ctarConfig.cpha = kDSPI_ClockPhaseFirstEdge; * masterConfig.ctarConfig.direction = kDSPI_MsbFirst; * masterConfig.ctarConfig.pcsToSckDelayInNanoSec = 1000000000U / masterConfig.ctarConfig.baudRate ; * masterConfig.ctarConfig.lastSckToPcsDelayInNanoSec = 1000000000U / masterConfig.ctarConfig.baudRate ; * masterConfig.ctarConfig.betweenTransferDelayInNanoSec = 1000000000U / masterConfig.ctarConfig.baudRate ; * masterConfig.whichPcs = kDSPI_Pcs0; * masterConfig.pcsActiveHighOrLow = kDSPI_PcsActiveLow; * masterConfig.enableContinuousSCK = false; * masterConfig.enableRxFifoOverWrite = false; * masterConfig.enableModifiedTimingFormat = false; * masterConfig.samplePoint = kDSPI_SckToSin0Clock; * DSPI_MasterInit(base, &masterConfig, srcClock_Hz); * @endcode * * @param base DSPI peripheral address. * @param masterConfig Pointer to the structure dspi_master_config_t. * @param srcClock_Hz Module source input clock in Hertz. */ void DSPI_MasterInit(SPI_Type *base, const dspi_master_config_t *masterConfig, uint32_t srcClock_Hz); /*! * @brief Sets the dspi_master_config_t structure to default values. * * The purpose of this API is to get the configuration structure initialized for the DSPI_MasterInit(). * Users may use the initialized structure unchanged in the DSPI_MasterInit() or modify the structure * before calling the DSPI_MasterInit(). * Example: * @code * dspi_master_config_t masterConfig; * DSPI_MasterGetDefaultConfig(&masterConfig); * @endcode * @param masterConfig pointer to dspi_master_config_t structure */ void DSPI_MasterGetDefaultConfig(dspi_master_config_t *masterConfig); /*! * @brief DSPI slave configuration. * * This function initializes the DSPI slave configuration. This is an example use case. * @code * dspi_slave_config_t slaveConfig; * slaveConfig->whichCtar = kDSPI_Ctar0; * slaveConfig->ctarConfig.bitsPerFrame = 8; * slaveConfig->ctarConfig.cpol = kDSPI_ClockPolarityActiveHigh; * slaveConfig->ctarConfig.cpha = kDSPI_ClockPhaseFirstEdge; * slaveConfig->enableContinuousSCK = false; * slaveConfig->enableRxFifoOverWrite = false; * slaveConfig->enableModifiedTimingFormat = false; * slaveConfig->samplePoint = kDSPI_SckToSin0Clock; * DSPI_SlaveInit(base, &slaveConfig); * @endcode * * @param base DSPI peripheral address. * @param slaveConfig Pointer to the structure dspi_master_config_t. */ void DSPI_SlaveInit(SPI_Type *base, const dspi_slave_config_t *slaveConfig); /*! * @brief Sets the dspi_slave_config_t structure to a default value. * * The purpose of this API is to get the configuration structure initialized for the DSPI_SlaveInit(). * Users may use the initialized structure unchanged in the DSPI_SlaveInit() or modify the structure * before calling the DSPI_SlaveInit(). * This is an example. * @code * dspi_slave_config_t slaveConfig; * DSPI_SlaveGetDefaultConfig(&slaveConfig); * @endcode * @param slaveConfig Pointer to the dspi_slave_config_t structure. */ void DSPI_SlaveGetDefaultConfig(dspi_slave_config_t *slaveConfig); /*! * @brief De-initializes the DSPI peripheral. Call this API to disable the DSPI clock. * @param base DSPI peripheral address. */ void DSPI_Deinit(SPI_Type *base); /*! * @brief Enables the DSPI peripheral and sets the MCR MDIS to 0. * * @param base DSPI peripheral address. * @param enable Pass true to enable module, false to disable module. */ static inline void DSPI_Enable(SPI_Type *base, bool enable) { if (enable) { base->MCR &= ~SPI_MCR_MDIS_MASK; } else { base->MCR |= SPI_MCR_MDIS_MASK; } } /*! *@} */ /*! * @name Status * @{ */ /*! * @brief Gets the DSPI status flag state. * @param base DSPI peripheral address. * @return DSPI status (in SR register). */ static inline uint32_t DSPI_GetStatusFlags(SPI_Type *base) { return (base->SR); } /*! * @brief Clears the DSPI status flag. * * This function clears the desired status bit by using a write-1-to-clear. The user passes in the base and the * desired status bit to clear. The list of status bits is defined in the dspi_status_and_interrupt_request_t. The * function uses these bit positions in its algorithm to clear the desired flag state. * This is an example. * @code * DSPI_ClearStatusFlags(base, kDSPI_TxCompleteFlag|kDSPI_EndOfQueueFlag); * @endcode * * @param base DSPI peripheral address. * @param statusFlags The status flag used from the type dspi_flags. */ static inline void DSPI_ClearStatusFlags(SPI_Type *base, uint32_t statusFlags) { base->SR = statusFlags; /*!< The status flags are cleared by writing 1 (w1c).*/ } /*! *@} */ /*! * @name Interrupts * @{ */ /*! * @brief Enables the DSPI interrupts. * * This function configures the various interrupt masks of the DSPI. The parameters are a base and an interrupt mask. * Note, for Tx Fill and Rx FIFO drain requests, enable the interrupt request and disable the DMA request. * Do not use this API(write to RSER register) while DSPI is in running state. * * @code * DSPI_EnableInterrupts(base, kDSPI_TxCompleteInterruptEnable | kDSPI_EndOfQueueInterruptEnable ); * @endcode * * @param base DSPI peripheral address. * @param mask The interrupt mask; use the enum _dspi_interrupt_enable. */ void DSPI_EnableInterrupts(SPI_Type *base, uint32_t mask); /*! * @brief Disables the DSPI interrupts. * * @code * DSPI_DisableInterrupts(base, kDSPI_TxCompleteInterruptEnable | kDSPI_EndOfQueueInterruptEnable ); * @endcode * * @param base DSPI peripheral address. * @param mask The interrupt mask; use the enum _dspi_interrupt_enable. */ static inline void DSPI_DisableInterrupts(SPI_Type *base, uint32_t mask) { base->RSER &= ~mask; } /*! *@} */ /*! * @name DMA Control * @{ */ /*! * @brief Enables the DSPI DMA request. * * This function configures the Rx and Tx DMA mask of the DSPI. The parameters are a base and a DMA mask. * @code * DSPI_EnableDMA(base, kDSPI_TxDmaEnable | kDSPI_RxDmaEnable); * @endcode * * @param base DSPI peripheral address. * @param mask The interrupt mask; use the enum dspi_dma_enable. */ static inline void DSPI_EnableDMA(SPI_Type *base, uint32_t mask) { base->RSER |= mask; } /*! * @brief Disables the DSPI DMA request. * * This function configures the Rx and Tx DMA mask of the DSPI. The parameters are a base and a DMA mask. * @code * SPI_DisableDMA(base, kDSPI_TxDmaEnable | kDSPI_RxDmaEnable); * @endcode * * @param base DSPI peripheral address. * @param mask The interrupt mask; use the enum dspi_dma_enable. */ static inline void DSPI_DisableDMA(SPI_Type *base, uint32_t mask) { base->RSER &= ~mask; } /*! * @brief Gets the DSPI master PUSHR data register address for the DMA operation. * * This function gets the DSPI master PUSHR data register address because this value is needed for the DMA operation. * * @param base DSPI peripheral address. * @return The DSPI master PUSHR data register address. */ static inline uint32_t DSPI_MasterGetTxRegisterAddress(SPI_Type *base) { return (uint32_t) & (base->PUSHR); } /*! * @brief Gets the DSPI slave PUSHR data register address for the DMA operation. * * This function gets the DSPI slave PUSHR data register address as this value is needed for the DMA operation. * * @param base DSPI peripheral address. * @return The DSPI slave PUSHR data register address. */ static inline uint32_t DSPI_SlaveGetTxRegisterAddress(SPI_Type *base) { return (uint32_t) & (base->PUSHR_SLAVE); } /*! * @brief Gets the DSPI POPR data register address for the DMA operation. * * This function gets the DSPI POPR data register address as this value is needed for the DMA operation. * * @param base DSPI peripheral address. * @return The DSPI POPR data register address. */ static inline uint32_t DSPI_GetRxRegisterAddress(SPI_Type *base) { return (uint32_t) & (base->POPR); } /*! *@} */ /*! * @name Bus Operations * @{ */ /*! * @brief Configures the DSPI for master or slave. * * @param base DSPI peripheral address. * @param mode Mode setting (master or slave) of type dspi_master_slave_mode_t. */ static inline void DSPI_SetMasterSlaveMode(SPI_Type *base, dspi_master_slave_mode_t mode) { base->MCR = (base->MCR & (~SPI_MCR_MSTR_MASK)) | SPI_MCR_MSTR(mode); } /*! * @brief Returns whether the DSPI module is in master mode. * * @param base DSPI peripheral address. * @return Returns true if the module is in master mode or false if the module is in slave mode. */ static inline bool DSPI_IsMaster(SPI_Type *base) { return (bool)((base->MCR) & SPI_MCR_MSTR_MASK); } /*! * @brief Starts the DSPI transfers and clears HALT bit in MCR. * * This function sets the module to start data transfer in either master or slave mode. * * @param base DSPI peripheral address. */ static inline void DSPI_StartTransfer(SPI_Type *base) { base->MCR &= ~SPI_MCR_HALT_MASK; } /*! * @brief Stops DSPI transfers and sets the HALT bit in MCR. * * This function stops data transfers in either master or slave modes. * * @param base DSPI peripheral address. */ static inline void DSPI_StopTransfer(SPI_Type *base) { base->MCR |= SPI_MCR_HALT_MASK; } /*! * @brief Enables or disables the DSPI FIFOs. * * This function allows the caller to disable/enable the Tx and Rx FIFOs independently. * Note that to disable, pass in a logic 0 (false) for the particular FIFO configuration. To enable, * pass in a logic 1 (true). * * @param base DSPI peripheral address. * @param enableTxFifo Disables (false) the TX FIFO; Otherwise, enables (true) the TX FIFO * @param enableRxFifo Disables (false) the RX FIFO; Otherwise, enables (true) the RX FIFO */ static inline void DSPI_SetFifoEnable(SPI_Type *base, bool enableTxFifo, bool enableRxFifo) { base->MCR = (base->MCR & (~(SPI_MCR_DIS_RXF_MASK | SPI_MCR_DIS_TXF_MASK))) | SPI_MCR_DIS_TXF(!enableTxFifo) | SPI_MCR_DIS_RXF(!enableRxFifo); } /*! * @brief Flushes the DSPI FIFOs. * * @param base DSPI peripheral address. * @param flushTxFifo Flushes (true) the Tx FIFO; Otherwise, does not flush (false) the Tx FIFO * @param flushRxFifo Flushes (true) the Rx FIFO; Otherwise, does not flush (false) the Rx FIFO */ static inline void DSPI_FlushFifo(SPI_Type *base, bool flushTxFifo, bool flushRxFifo) { base->MCR = (base->MCR & (~(SPI_MCR_CLR_TXF_MASK | SPI_MCR_CLR_RXF_MASK))) | SPI_MCR_CLR_TXF(flushTxFifo) | SPI_MCR_CLR_RXF(flushRxFifo); } /*! * @brief Configures the DSPI peripheral chip select polarity simultaneously. * For example, PCS0 and PCS1 are set to active low and other PCS is set to active high. Note that the number of * PCSs is specific to the device. * @code * DSPI_SetAllPcsPolarity(base, kDSPI_Pcs0ActiveLow | kDSPI_Pcs1ActiveLow); @endcode * @param base DSPI peripheral address. * @param mask The PCS polarity mask; use the enum _dspi_pcs_polarity. */ static inline void DSPI_SetAllPcsPolarity(SPI_Type *base, uint32_t mask) { base->MCR = (base->MCR & ~SPI_MCR_PCSIS_MASK) | SPI_MCR_PCSIS(mask); } /*! * @brief Sets the DSPI baud rate in bits per second. * * This function takes in the desired baudRate_Bps (baud rate) and calculates the nearest possible baud rate without * exceeding the desired baud rate, and returns the calculated baud rate in bits-per-second. It requires that the * caller also provide the frequency of the module source clock (in Hertz). * * @param base DSPI peripheral address. * @param whichCtar The desired Clock and Transfer Attributes Register (CTAR) of the type dspi_ctar_selection_t * @param baudRate_Bps The desired baud rate in bits per second * @param srcClock_Hz Module source input clock in Hertz * @return The actual calculated baud rate */ uint32_t DSPI_MasterSetBaudRate(SPI_Type *base, dspi_ctar_selection_t whichCtar, uint32_t baudRate_Bps, uint32_t srcClock_Hz); /*! * @brief Manually configures the delay prescaler and scaler for a particular CTAR. * * This function configures the PCS to SCK delay pre-scalar (PcsSCK) and scalar (CSSCK), after SCK delay pre-scalar * (PASC) and scalar (ASC), and the delay after transfer pre-scalar (PDT) and scalar (DT). * * These delay names are available in the type dspi_delay_type_t. * * The user passes the delay to the configuration along with the prescaler and scaler value. * This allows the user to directly set the prescaler/scaler values if pre-calculated or * to manually increment either value. * * @param base DSPI peripheral address. * @param whichCtar The desired Clock and Transfer Attributes Register (CTAR) of type dspi_ctar_selection_t. * @param prescaler The prescaler delay value (can be an integer 0, 1, 2, or 3). * @param scaler The scaler delay value (can be any integer between 0 to 15). * @param whichDelay The desired delay to configure; must be of type dspi_delay_type_t */ void DSPI_MasterSetDelayScaler( SPI_Type *base, dspi_ctar_selection_t whichCtar, uint32_t prescaler, uint32_t scaler, dspi_delay_type_t whichDelay); /*! * @brief Calculates the delay prescaler and scaler based on the desired delay input in nanoseconds. * * This function calculates the values for the following. * PCS to SCK delay pre-scalar (PCSSCK) and scalar (CSSCK), or * After SCK delay pre-scalar (PASC) and scalar (ASC), or * Delay after transfer pre-scalar (PDT) and scalar (DT). * * These delay names are available in the type dspi_delay_type_t. * * The user passes which delay to configure along with the desired delay value in nanoseconds. The function * calculates the values needed for the prescaler and scaler. Note that returning the calculated delay as an exact * delay match may not be possible. In this case, the closest match is calculated without going below the desired * delay value input. * It is possible to input a very large delay value that exceeds the capability of the part, in which case the maximum * supported delay is returned. The higher-level peripheral driver alerts the user of an out of range delay * input. * * @param base DSPI peripheral address. * @param whichCtar The desired Clock and Transfer Attributes Register (CTAR) of type dspi_ctar_selection_t. * @param whichDelay The desired delay to configure, must be of type dspi_delay_type_t * @param srcClock_Hz Module source input clock in Hertz * @param delayTimeInNanoSec The desired delay value in nanoseconds. * @return The actual calculated delay value. */ uint32_t DSPI_MasterSetDelayTimes(SPI_Type *base, dspi_ctar_selection_t whichCtar, dspi_delay_type_t whichDelay, uint32_t srcClock_Hz, uint32_t delayTimeInNanoSec); /*! * @brief Writes data into the data buffer for master mode. * * In master mode, the 16-bit data is appended to the 16-bit command info. The command portion * provides characteristics of the data, such as the optional continuous chip select * operation between transfers, the desired Clock and Transfer Attributes register to use for the * associated SPI frame, the desired PCS signal to use for the data transfer, whether the current * transfer is the last in the queue, and whether to clear the transfer count (normally needed when * sending the first frame of a data packet). This is an example. * @code * dspi_command_data_config_t commandConfig; * commandConfig.isPcsContinuous = true; * commandConfig.whichCtar = kDSPICtar0; * commandConfig.whichPcs = kDSPIPcs0; * commandConfig.clearTransferCount = false; * commandConfig.isEndOfQueue = false; * DSPI_MasterWriteData(base, &commandConfig, dataWord); @endcode * * @param base DSPI peripheral address. * @param command Pointer to the command structure. * @param data The data word to be sent. */ static inline void DSPI_MasterWriteData(SPI_Type *base, dspi_command_data_config_t *command, uint16_t data) { base->PUSHR = SPI_PUSHR_CONT(command->isPcsContinuous) | SPI_PUSHR_CTAS(command->whichCtar) | SPI_PUSHR_PCS(command->whichPcs) | SPI_PUSHR_EOQ(command->isEndOfQueue) | SPI_PUSHR_CTCNT(command->clearTransferCount) | SPI_PUSHR_TXDATA(data); } /*! * @brief Sets the dspi_command_data_config_t structure to default values. * * The purpose of this API is to get the configuration structure initialized for use in the DSPI_MasterWrite_xx(). * Users may use the initialized structure unchanged in the DSPI_MasterWrite_xx() or modify the structure * before calling the DSPI_MasterWrite_xx(). * This is an example. * @code * dspi_command_data_config_t command; * DSPI_GetDefaultDataCommandConfig(&command); * @endcode * @param command Pointer to the dspi_command_data_config_t structure. */ void DSPI_GetDefaultDataCommandConfig(dspi_command_data_config_t *command); /*! * @brief Writes data into the data buffer master mode and waits till complete to return. * * In master mode, the 16-bit data is appended to the 16-bit command info. The command portion * provides characteristics of the data, such as the optional continuous chip select * operation between transfers, the desired Clock and Transfer Attributes register to use for the * associated SPI frame, the desired PCS signal to use for the data transfer, whether the current * transfer is the last in the queue, and whether to clear the transfer count (normally needed when * sending the first frame of a data packet). This is an example. * @code * dspi_command_config_t commandConfig; * commandConfig.isPcsContinuous = true; * commandConfig.whichCtar = kDSPICtar0; * commandConfig.whichPcs = kDSPIPcs1; * commandConfig.clearTransferCount = false; * commandConfig.isEndOfQueue = false; * DSPI_MasterWriteDataBlocking(base, &commandConfig, dataWord); * @endcode * * Note that this function does not return until after the transmit is complete. Also note that the DSPI must be * enabled and running to transmit data (MCR[MDIS] & [HALT] = 0). Because the SPI is a synchronous protocol, * the received data is available when the transmit completes. * * @param base DSPI peripheral address. * @param command Pointer to the command structure. * @param data The data word to be sent. */ void DSPI_MasterWriteDataBlocking(SPI_Type *base, dspi_command_data_config_t *command, uint16_t data); /*! * @brief Returns the DSPI command word formatted to the PUSHR data register bit field. * * This function allows the caller to pass in the data command structure and returns the command word formatted * according to the DSPI PUSHR register bit field placement. The user can then "OR" the returned command word with the * desired data to send and use the function DSPI_HAL_WriteCommandDataMastermode or * DSPI_HAL_WriteCommandDataMastermodeBlocking to write the entire 32-bit command data word to the PUSHR. This helps * improve performance in cases where the command structure is constant. For example, the user calls this function * before starting a transfer to generate the command word. When they are ready to transmit the data, they OR * this formatted command word with the desired data to transmit. This process increases transmit performance when * compared to calling send functions, such as DSPI_HAL_WriteDataMastermode, which format the command word each time a * data word is to be sent. * * @param command Pointer to the command structure. * @return The command word formatted to the PUSHR data register bit field. */ static inline uint32_t DSPI_MasterGetFormattedCommand(dspi_command_data_config_t *command) { /* Format the 16-bit command word according to the PUSHR data register bit field*/ return (uint32_t)(SPI_PUSHR_CONT(command->isPcsContinuous) | SPI_PUSHR_CTAS(command->whichCtar) | SPI_PUSHR_PCS(command->whichPcs) | SPI_PUSHR_EOQ(command->isEndOfQueue) | SPI_PUSHR_CTCNT(command->clearTransferCount)); } /*! * @brief Writes a 32-bit data word (16-bit command appended with 16-bit data) into the data * buffer master mode and waits till complete to return. * * In this function, the user must append the 16-bit data to the 16-bit command information and then provide the total * 32-bit word * as the data to send. * The command portion provides characteristics of the data, such as the optional continuous chip select operation * between transfers, the desired Clock and Transfer Attributes register to use for the associated SPI frame, the * desired PCS * signal to use for the data transfer, whether the current transfer is the last in the queue, and whether to clear the * transfer count (normally needed when sending the first frame of a data packet). The user is responsible for * appending this command with the data to send. This is an example: * @code * dataWord = <16-bit command> | <16-bit data>; * DSPI_MasterWriteCommandDataBlocking(base, dataWord); * @endcode * * Note that this function does not return until after the transmit is complete. Also note that the DSPI must be * enabled and running to transmit data (MCR[MDIS] & [HALT] = 0). * Because the SPI is a synchronous protocol, the received data is available when the transmit completes. * * For a blocking polling transfer, see methods below. * Option 1: * uint32_t command_to_send = DSPI_MasterGetFormattedCommand(&command); * uint32_t data0 = command_to_send | data_need_to_send_0; * uint32_t data1 = command_to_send | data_need_to_send_1; * uint32_t data2 = command_to_send | data_need_to_send_2; * * DSPI_MasterWriteCommandDataBlocking(base,data0); * DSPI_MasterWriteCommandDataBlocking(base,data1); * DSPI_MasterWriteCommandDataBlocking(base,data2); * * Option 2: * DSPI_MasterWriteDataBlocking(base,&command,data_need_to_send_0); * DSPI_MasterWriteDataBlocking(base,&command,data_need_to_send_1); * DSPI_MasterWriteDataBlocking(base,&command,data_need_to_send_2); * * @param base DSPI peripheral address. * @param data The data word (command and data combined) to be sent. */ void DSPI_MasterWriteCommandDataBlocking(SPI_Type *base, uint32_t data); /*! * @brief Writes data into the data buffer in slave mode. * * In slave mode, up to 16-bit words may be written. * * @param base DSPI peripheral address. * @param data The data to send. */ static inline void DSPI_SlaveWriteData(SPI_Type *base, uint32_t data) { base->PUSHR_SLAVE = data; } /*! * @brief Writes data into the data buffer in slave mode, waits till data was transmitted, and returns. * * In slave mode, up to 16-bit words may be written. The function first clears the transmit complete flag, writes data * into data register, and finally waits until the data is transmitted. * * @param base DSPI peripheral address. * @param data The data to send. */ void DSPI_SlaveWriteDataBlocking(SPI_Type *base, uint32_t data); /*! * @brief Reads data from the data buffer. * * @param base DSPI peripheral address. * @return The data from the read data buffer. */ static inline uint32_t DSPI_ReadData(SPI_Type *base) { return (base->POPR); } /*! * @brief Set up the dummy data. * * @param base DSPI peripheral address. * @param dummyData Data to be transferred when tx buffer is NULL. */ void DSPI_SetDummyData(SPI_Type *base, uint8_t dummyData); /*! *@} */ /*! * @name Transactional * @{ */ /*Transactional APIs*/ /*! * @brief Initializes the DSPI master handle. * * This function initializes the DSPI handle, which can be used for other DSPI transactional APIs. Usually, for a * specified DSPI instance, call this API once to get the initialized handle. * * @param base DSPI peripheral base address. * @param handle DSPI handle pointer to dspi_master_handle_t. * @param callback DSPI callback. * @param userData Callback function parameter. */ void DSPI_MasterTransferCreateHandle(SPI_Type *base, dspi_master_handle_t *handle, dspi_master_transfer_callback_t callback, void *userData); /*! * @brief DSPI master transfer data using polling. * * This function transfers data using polling. This is a blocking function, which does not return until all transfers * have been completed. * * @param base DSPI peripheral base address. * @param transfer Pointer to the dspi_transfer_t structure. * @return status of status_t. */ status_t DSPI_MasterTransferBlocking(SPI_Type *base, dspi_transfer_t *transfer); /*! * @brief DSPI master transfer data using interrupts. * * This function transfers data using interrupts. This is a non-blocking function, which returns right away. When all * data is transferred, the callback function is called. * @param base DSPI peripheral base address. * @param handle Pointer to the dspi_master_handle_t structure which stores the transfer state. * @param transfer Pointer to the dspi_transfer_t structure. * @return status of status_t. */ status_t DSPI_MasterTransferNonBlocking(SPI_Type *base, dspi_master_handle_t *handle, dspi_transfer_t *transfer); /*! * @brief Transfers a block of data using a polling method. * * This function will do a half-duplex transfer for DSPI master, This is a blocking function, * which does not retuen until all transfer have been completed. And data transfer will be half-duplex, * users can set transmit first or receive first. * * @param base DSPI base pointer * @param xfer pointer to dspi_half_duplex_transfer_t structure * @return status of status_t. */ status_t DSPI_MasterHalfDuplexTransferBlocking(SPI_Type *base, dspi_half_duplex_transfer_t *xfer); /*! * @brief Performs a non-blocking DSPI interrupt transfer. * * This function transfers data using interrupts, the transfer mechanism is half-duplex. This is a non-blocking * function, * which returns right away. When all data is transferred, the callback function is called. * * @param base DSPI peripheral base address. * @param handle pointer to dspi_master_handle_t structure which stores the transfer state * @param xfer pointer to dspi_half_duplex_transfer_t structure * @return status of status_t. */ status_t DSPI_MasterHalfDuplexTransferNonBlocking(SPI_Type *base, dspi_master_handle_t *handle, dspi_half_duplex_transfer_t *xfer); /*! * @brief Gets the master transfer count. * * This function gets the master transfer count. * * @param base DSPI peripheral base address. * @param handle Pointer to the dspi_master_handle_t structure which stores the transfer state. * @param count The number of bytes transferred by using the non-blocking transaction. * @return status of status_t. */ status_t DSPI_MasterTransferGetCount(SPI_Type *base, dspi_master_handle_t *handle, size_t *count); /*! * @brief DSPI master aborts a transfer using an interrupt. * * This function aborts a transfer using an interrupt. * * @param base DSPI peripheral base address. * @param handle Pointer to the dspi_master_handle_t structure which stores the transfer state. */ void DSPI_MasterTransferAbort(SPI_Type *base, dspi_master_handle_t *handle); /*! * @brief DSPI Master IRQ handler function. * * This function processes the DSPI transmit and receive IRQ. * @param base DSPI peripheral base address. * @param handle Pointer to the dspi_master_handle_t structure which stores the transfer state. */ void DSPI_MasterTransferHandleIRQ(SPI_Type *base, dspi_master_handle_t *handle); /*! * @brief Initializes the DSPI slave handle. * * This function initializes the DSPI handle, which can be used for other DSPI transactional APIs. Usually, for a * specified DSPI instance, call this API once to get the initialized handle. * * @param handle DSPI handle pointer to the dspi_slave_handle_t. * @param base DSPI peripheral base address. * @param callback DSPI callback. * @param userData Callback function parameter. */ void DSPI_SlaveTransferCreateHandle(SPI_Type *base, dspi_slave_handle_t *handle, dspi_slave_transfer_callback_t callback, void *userData); /*! * @brief DSPI slave transfers data using an interrupt. * * This function transfers data using an interrupt. This is a non-blocking function, which returns right away. When all * data is transferred, the callback function is called. * * @param base DSPI peripheral base address. * @param handle Pointer to the dspi_slave_handle_t structure which stores the transfer state. * @param transfer Pointer to the dspi_transfer_t structure. * @return status of status_t. */ status_t DSPI_SlaveTransferNonBlocking(SPI_Type *base, dspi_slave_handle_t *handle, dspi_transfer_t *transfer); /*! * @brief Gets the slave transfer count. * * This function gets the slave transfer count. * * @param base DSPI peripheral base address. * @param handle Pointer to the dspi_master_handle_t structure which stores the transfer state. * @param count The number of bytes transferred by using the non-blocking transaction. * @return status of status_t. */ status_t DSPI_SlaveTransferGetCount(SPI_Type *base, dspi_slave_handle_t *handle, size_t *count); /*! * @brief DSPI slave aborts a transfer using an interrupt. * * This function aborts a transfer using an interrupt. * * @param base DSPI peripheral base address. * @param handle Pointer to the dspi_slave_handle_t structure which stores the transfer state. */ void DSPI_SlaveTransferAbort(SPI_Type *base, dspi_slave_handle_t *handle); /*! * @brief DSPI Master IRQ handler function. * * This function processes the DSPI transmit and receive IRQ. * * @param base DSPI peripheral base address. * @param handle Pointer to the dspi_slave_handle_t structure which stores the transfer state. */ void DSPI_SlaveTransferHandleIRQ(SPI_Type *base, dspi_slave_handle_t *handle); /*! *@} */ #if defined(__cplusplus) } #endif /*_cplusplus*/ /*! *@} */ #endif /*_FSL_DSPI_H_*/