462 lines
17 KiB
C
462 lines
17 KiB
C
/****************************************************************************//**
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* @file spi.h
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* @version V1.00
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* $Revision: 21 $
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* $Date: 15/06/18 4:12p $
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* @brief NUC472/NUC442 SPI driver header file
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*
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* @note
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* Copyright (C) 2014 Nuvoton Technology Corp. All rights reserved.
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*****************************************************************************/
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#ifndef __SPI_H__
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#define __SPI_H__
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/** @addtogroup NUC472_442_Device_Driver NUC472/NUC442 Device Driver
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@{
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*/
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/** @addtogroup NUC472_442_SPI_Driver SPI Driver
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@{
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*/
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/** @addtogroup NUC472_442_SPI_EXPORTED_CONSTANTS SPI Exported Constants
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@{
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*/
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#define SPI_MODE_0 (SPI_CTL_TXNEG_Msk) /*!< CLKP=0; RX_NEG=0; TX_NEG=1 \hideinitializer */
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#define SPI_MODE_1 (SPI_CTL_RXNEG_Msk) /*!< CLKP=0; RX_NEG=1; TX_NEG=0 \hideinitializer */
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#define SPI_MODE_2 (SPI_CTL_CLKPOL_Msk | SPI_CTL_RXNEG_Msk) /*!< CLKP=1; RX_NEG=1; TX_NEG=0 \hideinitializer */
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#define SPI_MODE_3 (SPI_CTL_CLKPOL_Msk | SPI_CTL_TXNEG_Msk) /*!< CLKP=1; RX_NEG=0; TX_NEG=1 \hideinitializer */
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#define SPI_SLAVE (SPI_CTL_SLAVE_Msk) /*!< Set as slave \hideinitializer */
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#define SPI_MASTER (0x0) /*!< Set as master \hideinitializer */
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#define SPI_SS0 (0x1) /*!< Set SS0 \hideinitializer */
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#define SPI_SS1 (0x2) /*!< Set SS1 \hideinitializer */
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#define SPI_SS_ACTIVE_HIGH (SPI_SSCTL_SSACTPOL_Msk) /*!< SS active high \hideinitializer */
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#define SPI_SS_ACTIVE_LOW (0x0) /*!< SS active low \hideinitializer */
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#define SPI_UNITIEN_MASK (0x001) /*!< Interrupt enable mask \hideinitializer */
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#define SPI_SSINAIEN_MASK (0x002) /*!< Slave Slave Inactive interrupt enable mask \hideinitializer */
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#define SPI_SSACTIEN_MASK (0x004) /*!< Slave Slave Active interrupt enable mask \hideinitializer */
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#define SPI_SLVURIEN_MASK (0x008) /*!< Slave Mode Error 1 interrupt enable mask \hideinitializer */
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#define SPI_SLVBEIEN_MASK (0x010) /*!< Slave Mode Error 0 interrupt enable mask \hideinitializer */
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#define SPI_SLVTOIEN_MASK (0x020) /*!< Slave Mode Time-out interrupt enable mask \hideinitializer */
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#define SPI_FIFO_TXTHIEN_MASK (0x040) /*!< Transmit FIFO Threshold interrupt enable mask \hideinitializer */
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#define SPI_FIFO_RXTHIEN_MASK (0x080) /*!< Receive FIFO Threshold interrupt enable mask \hideinitializer */
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#define SPI_FIFO_RXOVIEN_MASK (0x100) /*!< Receive FIFO Overrun interrupt enable mask \hideinitializer */
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#define SPI_FIFO_TXUFIEN_MASK (0x200) /*!< Slave Transmit Under Run interrupt enable mask \hideinitializer */
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#define SPI_FIFO_RXTOIEN_MASK (0x400) /*!< Slave Receive Time-out interrupt enable mask \hideinitializer */
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/*@}*/ /* end of group NUC472_442_SPI_EXPORTED_CONSTANTS */
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/** @addtogroup NUC472_442_SPI_EXPORTED_FUNCTIONS SPI Exported Functions
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@{
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*/
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/**
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* @brief Set time out period for slave.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @param[in] u32TimeoutPeriod is the period of time out.
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* @return none
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* \hideinitializer
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*/
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#define SPI_SET_SLAVE_TIMEOUT_PERIOD(spi, u32TimeoutPeriod) ( (spi)->SSCTL = ((spi)->SSCTL & ~SPI_SSCTL_SLVTOCNT_Msk) | (((uint32_t)u32TimeoutPeriod & 0xFFFF) << SPI_SSCTL_SLVTOCNT_Pos) )
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/**
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* @brief Enable time out clear function for FIFO mode.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_ENABLE_TIMEOUT_FIFO_CLEAR(spi) ( (spi)->SSCTL |= SPI_SSCTL_SLVTORST_Msk )
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/**
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* @brief Disable time out clear function for FIFO mode.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_DISABLE_TIMEOUT_FIFO_CLEAR(spi) ( (spi)->SSCTL &= ~SPI_SSCTL_SLVTORST_Msk )
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/**
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* @brief Set data out signal to low (0) if transmit under-run occurs.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_SET_TX_UNDERRUN_DATA_LOW(spi) ( (spi)->FIFOCTL &= ~SPI_FIFOCTL_TXUFPOL_Msk )
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/**
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* @brief Set data out signal to high (1) if transmit under-run occurs.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_SET_TX_UNDERRUN_DATA_HIGH(spi) ( (spi)->FIFOCTL |= SPI_FIFOCTL_TXUFPOL_Msk )
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/**
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* @brief Get the status flags.
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* @param spi is the base address of SPI module.
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* @return status flags
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* \hideinitializer
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*/
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#define SPI_GET_STATUS(spi) ( (spi)->STATUS )
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/**
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* @brief Clear the unit transfer interrupt flag.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_CLR_UNIT_TRANS_INT_FLAG(spi) ( (spi)->STATUS = SPI_STATUS_UNITIF_Msk )
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/**
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* @brief Disable slave 3-wire mode.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_DISABLE_3WIRE_MODE(spi) ( (spi)->SSCTL &= ~SPI_SSCTL_SLV3WIRE_Msk )
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/**
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* @brief Enable slave 3-wire mode.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_ENABLE_3WIRE_MODE(spi) ( (spi)->SSCTL |= SPI_SSCTL_SLV3WIRE_Msk )
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/**
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* @brief Get the count of available data in RX FIFO.
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* @param[in] spi is the base address of SPI module.
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* @return The count of available data in RX FIFO.
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* \hideinitializer
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*/
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#define SPI_GET_RX_FIFO_COUNT(spi) ( (((spi)->STATUS & SPI_STATUS_RXCNT_Msk) >> SPI_STATUS_RXCNT_Pos) & 0xf )
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/**
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* @brief Get the Rx FIFO empty flag.
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* @param[in] spi is the base address of SPI module.
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* @return Rx FIFO flag
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* @retval 0: Rx FIFO is not empty
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* @retval 1: Rx FIFO is empty
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* \hideinitializer
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*/
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#define SPI_GET_RX_FIFO_EMPTY_FLAG(spi) ( ((spi)->STATUS & SPI_STATUS_RXEMPTY_Msk) == SPI_STATUS_RXEMPTY_Msk ? 1:0 )
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/**
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* @brief Get the Tx FIFO empty flag.
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* @param[in] spi is the base address of SPI module.
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* @return Tx FIFO flag
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* @retval 0: Tx FIFO is not empty
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* @retval 1: Tx FIFO is empty
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* \hideinitializer
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*/
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#define SPI_GET_TX_FIFO_EMPTY_FLAG(spi) ( ((spi)->STATUS & SPI_STATUS_TXEMPTY_Msk) == SPI_STATUS_TXEMPTY_Msk ? 1:0 )
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/**
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* @brief Get the Tx FIFO full flag.
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* @param[in] spi is the base address of SPI module.
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* @return Tx FIFO flag
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* @retval 0: Tx FIFO is not full
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* @retval 1: Tx FIFO is full
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* \hideinitializer
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*/
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#define SPI_GET_TX_FIFO_FULL_FLAG(spi) ( ((spi)->STATUS & SPI_STATUS_TXFULL_Msk) == SPI_STATUS_TXFULL_Msk ? 1:0 )
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/**
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* @brief Get the datum read from R0 FIFO.
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* @param[in] spi is the base address of SPI module.
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* @return data in Rx register
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* \hideinitializer
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*/
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#define SPI_READ_RX(spi) ((spi)->RX)
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/**
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* @brief Write datum to TX register.
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* @param[in] spi is the base address of SPI module.
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* @param[in] u32TxData is the datum which user attempt to transfer through SPI bus.
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* @return none
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* \hideinitializer
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*/
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#define SPI_WRITE_TX(spi, u32TxData) ( (spi)->TX = u32TxData )
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/**
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* @brief Set SPIn_SS0 pin to high state.
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* @param[in] spi The pointer of the specified SPI module.
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* @return None.
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* @details Disable automatic slave selection function and set SPIn_SS0 pin to high state. Only available in Master mode.
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* \hideinitializer
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*/
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#define SPI_SET_SS0_HIGH(spi) ((spi)->SSCTL = ((spi)->SSCTL & ~(SPI_SSCTL_AUTOSS_Msk|SPI_SSCTL_SSACTPOL_Msk|SPI_SS0)))
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/**
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* @brief Set SPIn_SS0 pin to low state.
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* @param[in] spi The pointer of the specified SPI module.
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* @return None.
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* @details Disable automatic slave selection function and set SPIn_SS0 pin to low state. Only available in Master mode.
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* \hideinitializer
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*/
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#define SPI_SET_SS0_LOW(spi) ((spi)->SSCTL = ((spi)->SSCTL & ~(SPI_SSCTL_AUTOSS_Msk|SPI_SSCTL_SSACTPOL_Msk|SPI_SS0)) | SPI_SS0)
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/**
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* @brief Set SPIn_SS1 pin to high state.
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* @param[in] spi The pointer of the specified SPI module.
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* @return None.
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* @details Disable automatic slave selection function and set SPIn_SS1 pin to high state. Only available in Master mode.
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* \hideinitializer
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*/
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#define SPI_SET_SS1_HIGH(spi) ((spi)->SSCTL = ((spi)->SSCTL & ~(SPI_SSCTL_AUTOSS_Msk|SPI_SSCTL_SSACTPOL_Msk|SPI_SS1)))
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/**
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* @brief Set SPIn_SS1 pin to low state.
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* @param[in] spi The pointer of the specified SPI module.
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* @return None.
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* @details Disable automatic slave selection function and set SPIn_SS1 pin to low state. Only available in Master mode.
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* \hideinitializer
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*/
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#define SPI_SET_SS1_LOW(spi) ((spi)->SSCTL = ((spi)->SSCTL & ~(SPI_SSCTL_AUTOSS_Msk|SPI_SSCTL_SSACTPOL_Msk|SPI_SS1)) | SPI_SS1)
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/**
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* @brief Enable byte reorder function.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_ENABLE_BYTE_REORDER(spi) ( (spi)->CTL |= SPI_CTL_REORDER_Msk )
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/**
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* @brief Disable byte reorder function.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param [in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_DISABLE_BYTE_REORDER(spi) ( (spi)->CTL &= ~SPI_CTL_REORDER_Msk )
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/**
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* @brief Set the length of suspend interval.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @param[in] u32SuspCycle decides the length of suspend interval.
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* @return none
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* \hideinitializer
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*/
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#define SPI_SET_SUSPEND_CYCLE(spi, u32SuspCycle) ( (spi)->CTL = ((spi)->CTL & ~SPI_CTL_SUSPITV_Msk) | (u32SuspCycle << SPI_CTL_SUSPITV_Pos) )
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/**
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* @brief Set the SPI transfer sequence with LSB first.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_SET_LSB_FIRST(spi) ( (spi)->CTL |= SPI_CTL_LSB_Msk )
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/**
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* @brief Set the SPI transfer sequence with MSB first.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_SET_MSB_FIRST(spi) ( (spi)->CTL &= ~SPI_CTL_LSB_Msk )
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/**
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* @brief Set the data width of a SPI transaction.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @param[in] u32Width data width
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* @return none
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* \hideinitializer
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*/
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static __INLINE void SPI_SET_DATA_WIDTH(SPI_T *spi, uint32_t u32Width)
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{
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if(u32Width == 32)
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u32Width = 0;
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spi->CTL = (spi->CTL & ~SPI_CTL_DWIDTH_Msk) | (u32Width << SPI_CTL_DWIDTH_Pos);
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}
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/**
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* @brief Get the SPI busy state.
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* @param[in] spi is the base address of SPI module.
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* @return SPI busy status
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* @retval 0: SPI module is not busy
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* @retval 1: SPI module is busy
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* \hideinitializer
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*/
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#define SPI_IS_BUSY(spi) ( ((spi)->STATUS & SPI_STATUS_BUSY_Msk) == SPI_STATUS_BUSY_Msk ? 1:0 )
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/**
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* @brief Set the SPIEN bit to trigger SPI transfer.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_TRIGGER(spi) ( (spi)->CTL |= SPI_CTL_SPIEN_Msk )
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/**
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* @brief Set the SPIEN bit to trigger SPI transfer.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_ENABLE(spi) ( (spi)->CTL |= SPI_CTL_SPIEN_Msk )
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/**
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* @brief Disable SPI function.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_DISABLE(spi) ( (spi)->CTL &= ~SPI_CTL_SPIEN_Msk )
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/**
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* @brief Disable SPI Dual IO function.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_DISABLE_DUAL_MODE(spi) ( (spi)->CTL &= ~SPI_CTL_DUALIOEN_Msk )
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/**
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* @brief Enable Dual IO function and set SPI Dual IO direction to input.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_ENABLE_DUAL_INPUT_MODE(spi) ( (spi)->CTL = ((spi)->CTL & ~SPI_CTL_QDIODIR_Msk) | SPI_CTL_DUALIOEN_Msk )
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/**
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* @brief Enable Dual IO function and set SPI Dual IO direction to output.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_ENABLE_DUAL_OUTPUT_MODE(spi) ( (spi)->CTL |= SPI_CTL_QDIODIR_Msk | SPI_CTL_DUALIOEN_Msk )
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/**
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* @brief Disable SPI Dual IO function.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_DISABLE_QUAD_MODE(spi) ( (spi)->CTL &= ~SPI_CTL_QUADIOEN_Msk )
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/**
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* @brief Set SPI Quad IO direction to input.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_ENABLE_QUAD_INPUT_MODE(spi) ( (spi)->CTL = ((spi)->CTL & ~SPI_CTL_QDIODIR_Msk) | SPI_CTL_QUADIOEN_Msk )
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/**
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* @brief Set SPI Quad IO direction to output.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_ENABLE_QUAD_OUTPUT_MODE(spi) ( (spi)->CTL |= SPI_CTL_QDIODIR_Msk | SPI_CTL_QUADIOEN_Msk )
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/**
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* @brief Trigger RX PDMA transfer.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_TRIGGER_RX_PDMA(spi) ( (spi)->PDMACTL |= SPI_PDMACTL_RXPDMAEN_Msk )
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/**
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* @brief Trigger TX PDMA transfer.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_TRIGGER_TX_PDMA(spi) ( (spi)->PDMACTL |= SPI_PDMACTL_TXPDMAEN_Msk )
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/**
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* @brief Trigger TX/RX PDMA transfer at the same time.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_TRIGGER_TXRX_PDMA(spi) ( (spi)->PDMACTL |= (SPI_PDMACTL_TXPDMAEN_Msk | SPI_PDMACTL_RXPDMAEN_Msk) )
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/**
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* @brief Disable RX PDMA transfer.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_DISABLE_RX_PDMA(spi) ( (spi)->PDMACTL &= ~SPI_PDMACTL_RXPDMAEN_Msk )
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/**
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* @brief Trigger TX PDMA transfer.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_DISABLE_TX_PDMA(spi) ( (spi)->PDMACTL &= ~SPI_PDMACTL_TXPDMAEN_Msk )
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/**
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* @brief Enable 2-bit transfer mode.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_ENABLE_2BIT_MODE(spi) ( (spi)->CTL |= SPI_CTL_TWOBIT_Msk )
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/**
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* @brief Disable 2-bit transfer mode.
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* @note Before calling this function, SPI must be stopped first. \ref SPI_DISABLE must be called.
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* @param[in] spi is the base address of SPI module.
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* @return none
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* \hideinitializer
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*/
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#define SPI_DISABLE_2BIT_MODE(spi) ( (spi)->CTL &= ~SPI_CTL_TWOBIT_Msk )
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uint32_t SPI_Open(SPI_T *spi,uint32_t u32MasterSlave, uint32_t u32SPIMode, uint32_t u32DataWidth, uint32_t u32BusClock);
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void SPI_Close(SPI_T *spi);
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void SPI_ClearRxFIFO(SPI_T *spi);
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void SPI_ClearTxFIFO(SPI_T *spi);
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void SPI_DisableAutoSS(SPI_T *spi);
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void SPI_EnableAutoSS(SPI_T *spi, uint32_t u32SSPinMask, uint32_t u32ActiveLevel);
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uint32_t SPI_SetBusClock(SPI_T *spi, uint32_t u32BusClock);
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void SPI_SetFIFOThreshold(SPI_T *spi, uint32_t u32TxThreshold, uint32_t u32RxThreshold);
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uint32_t SPI_GetBusClock(SPI_T *spi);
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void SPI_EnableInt(SPI_T *spi, uint32_t u32Mask);
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void SPI_DisableInt(SPI_T *spi, uint32_t u32Mask);
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/*@}*/ /* end of group NUC472_442_SPI_EXPORTED_FUNCTIONS */
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/*@}*/ /* end of group NUC472_442_SPI_Driver */
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/*@}*/ /* end of group NUC472_442_Device_Driver */
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#ifdef __cplusplus
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}
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#endif
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#endif //__SPI_H__
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/*** (C) COPYRIGHT 2014 Nuvoton Technology Corp. ***/
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