/******************************************************************************
 * @file     qspi.h
 * @version  V3.00
 * @brief    M2351 series QSPI driver header file
 *
 * @copyright (C) 2017 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#ifndef __QSPI_H__
#define __QSPI_H__

#ifdef __cplusplus
extern "C"
{
#endif


/** @addtogroup Standard_Driver Standard Driver
  @{
*/

/** @addtogroup QSPI_Driver QSPI Driver
  @{
*/

/** @addtogroup QSPI_EXPORTED_CONSTANTS QSPI Exported Constants
  @{
*/

#define QSPI_MODE_0        (QSPI_CTL_TXNEG_Msk)                             /*!< CLKPOL=0; RXNEG=0; TXNEG=1 */
#define QSPI_MODE_1        (QSPI_CTL_RXNEG_Msk)                             /*!< CLKPOL=0; RXNEG=1; TXNEG=0 */
#define QSPI_MODE_2        (QSPI_CTL_CLKPOL_Msk | QSPI_CTL_RXNEG_Msk)       /*!< CLKPOL=1; RXNEG=1; TXNEG=0 */
#define QSPI_MODE_3        (QSPI_CTL_CLKPOL_Msk | QSPI_CTL_TXNEG_Msk)       /*!< CLKPOL=1; RXNEG=0; TXNEG=1 */

#define QSPI_SLAVE         (QSPI_CTL_SLAVE_Msk)                             /*!< Set as slave */
#define QSPI_MASTER        (0x0UL)                                          /*!< Set as master */

#define QSPI_SS                (QSPI_SSCTL_SS_Msk)                          /*!< Set SS */
#define QSPI_SS_ACTIVE_HIGH    (QSPI_SSCTL_SSACTPOL_Msk)                    /*!< SS active high */
#define QSPI_SS_ACTIVE_LOW     (0x0UL)                                      /*!< SS active low */

/* QSPI Interrupt Mask */
#define QSPI_UNIT_INT_MASK                (0x001UL)                        /*!< Unit transfer interrupt mask */
#define QSPI_SSACT_INT_MASK               (0x002UL)                        /*!< Slave selection signal active interrupt mask */
#define QSPI_SSINACT_INT_MASK             (0x004UL)                        /*!< Slave selection signal inactive interrupt mask */
#define QSPI_SLVUR_INT_MASK               (0x008UL)                        /*!< Slave under run interrupt mask */
#define QSPI_SLVBE_INT_MASK               (0x010UL)                        /*!< Slave bit count error interrupt mask */
#define QSPI_SLVTO_INT_MASK               (0x020UL)                        /*!< Slave Mode Time-out interrupt mask */
#define QSPI_TXUF_INT_MASK                (0x040UL)                        /*!< Slave TX underflow interrupt mask */
#define QSPI_FIFO_TXTH_INT_MASK           (0x080UL)                        /*!< FIFO TX threshold interrupt mask */
#define QSPI_FIFO_RXTH_INT_MASK           (0x100UL)                        /*!< FIFO RX threshold interrupt mask */
#define QSPI_FIFO_RXOV_INT_MASK           (0x200UL)                        /*!< FIFO RX overrun interrupt mask */
#define QSPI_FIFO_RXTO_INT_MASK           (0x400UL)                        /*!< FIFO RX time-out interrupt mask */

/* QSPI Status Mask */
#define QSPI_BUSY_MASK                    (0x01UL)                         /*!< Busy status mask */
#define QSPI_RX_EMPTY_MASK                (0x02UL)                         /*!< RX empty status mask */
#define QSPI_RX_FULL_MASK                 (0x04UL)                         /*!< RX full status mask */
#define QSPI_TX_EMPTY_MASK                (0x08UL)                         /*!< TX empty status mask */
#define QSPI_TX_FULL_MASK                 (0x10UL)                         /*!< TX full status mask */
#define QSPI_TXRX_RESET_MASK              (0x20UL)                         /*!< TX or RX reset status mask */
#define QSPI_SPIEN_STS_MASK               (0x40UL)                         /*!< SPIEN status mask */
#define QSPI_SSLINE_STS_MASK              (0x80UL)                         /*!< QSPIx_SS line status mask */

/*@}*/ /* end of group QSPI_EXPORTED_CONSTANTS */


/** @addtogroup QSPI_EXPORTED_FUNCTIONS QSPI Exported Functions
  @{
*/

/**
  * @brief      Clear the unit transfer interrupt flag.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Write 1 to UNITIF bit of QSPI_STATUS register to clear the unit transfer interrupt flag.
  */
#define QSPI_CLR_UNIT_TRANS_INT_FLAG(qspi)   ( (qspi)->STATUS = QSPI_STATUS_UNITIF_Msk )

/**
  * @brief      Disable 2-bit Transfer mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear TWOBIT bit of QSPI_CTL register to disable 2-bit Transfer mode.
  */
#define QSPI_DISABLE_2BIT_MODE(qspi)   ( (qspi)->CTL &= ~QSPI_CTL_TWOBIT_Msk )

/**
  * @brief      Disable Slave 3-wire mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear SLV3WIRE bit of QSPI_SSCTL register to disable Slave 3-wire mode.
  */
#define QSPI_DISABLE_3WIRE_MODE(qspi)   ( (qspi)->SSCTL &= ~QSPI_SSCTL_SLV3WIRE_Msk )

/**
  * @brief      Disable Dual I/O mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear DUALIOEN bit of QSPI_CTL register to disable Dual I/O mode.
  */
#define QSPI_DISABLE_DUAL_MODE(qspi)   ( (qspi)->CTL &= ~QSPI_CTL_DUALIOEN_Msk )

/**
  * @brief      Disable Quad I/O mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear QUADIOEN bit of QSPI_CTL register to disable Quad I/O mode.
  */
#define QSPI_DISABLE_QUAD_MODE(qspi)   ( (qspi)->CTL &= ~QSPI_CTL_QUADIOEN_Msk )

/**
  * @brief      Enable 2-bit Transfer mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Set TWOBIT bit of QSPI_CTL register to enable 2-bit Transfer mode.
  */
#define QSPI_ENABLE_2BIT_MODE(qspi)   ( (qspi)->CTL |= QSPI_CTL_TWOBIT_Msk )

/**
  * @brief      Enable Slave 3-wire mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Set SLV3WIRE bit of QSPI_SSCTL register to enable Slave 3-wire mode.
  */
#define QSPI_ENABLE_3WIRE_MODE(qspi)   ( (qspi)->SSCTL |= QSPI_SSCTL_SLV3WIRE_Msk )

/**
  * @brief      Enable Dual input mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear DATDIR bit and set DUALIOEN bit of QSPI_CTL register to enable Dual input mode.
  */
#define QSPI_ENABLE_DUAL_INPUT_MODE(qspi)   ( (qspi)->CTL = ((qspi)->CTL & (~QSPI_CTL_DATDIR_Msk)) | QSPI_CTL_DUALIOEN_Msk )

/**
  * @brief      Enable Dual output mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Set DATDIR bit and DUALIOEN bit of QSPI_CTL register to enable Dual output mode.
  */
#define QSPI_ENABLE_DUAL_OUTPUT_MODE(qspi)   ( (qspi)->CTL |= (QSPI_CTL_DATDIR_Msk | QSPI_CTL_DUALIOEN_Msk) )

/**
  * @brief      Enable Quad input mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear DATDIR bit and set QUADIOEN bit of QSPI_CTL register to enable Quad input mode.
  */
#define QSPI_ENABLE_QUAD_INPUT_MODE(qspi)   ( (qspi)->CTL = ((qspi)->CTL & (~QSPI_CTL_DATDIR_Msk)) | QSPI_CTL_QUADIOEN_Msk )

/**
  * @brief      Enable Quad output mode.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Set DATDIR bit and QUADIOEN bit of QSPI_CTL register to enable Quad output mode.
  */
#define QSPI_ENABLE_QUAD_OUTPUT_MODE(qspi)   ( (qspi)->CTL |= (QSPI_CTL_DATDIR_Msk | QSPI_CTL_QUADIOEN_Msk) )

/**
  * @brief      Trigger RX PDMA function.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Set RXPDMAEN bit of QSPI_PDMACTL register to enable RX PDMA transfer function.
  */
#define QSPI_TRIGGER_RX_PDMA(qspi)   ( (qspi)->PDMACTL |= QSPI_PDMACTL_RXPDMAEN_Msk )

/**
  * @brief      Trigger TX PDMA function.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Set TXPDMAEN bit of QSPI_PDMACTL register to enable TX PDMA transfer function.
  */
#define QSPI_TRIGGER_TX_PDMA(qspi)   ( (qspi)->PDMACTL |= QSPI_PDMACTL_TXPDMAEN_Msk )

/**
  * @brief      Disable RX PDMA transfer.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear RXPDMAEN bit of QSPI_PDMACTL register to disable RX PDMA transfer function.
  */
#define QSPI_DISABLE_RX_PDMA(qspi) ( (qspi)->PDMACTL &= ~QSPI_PDMACTL_RXPDMAEN_Msk )

/**
  * @brief      Disable TX PDMA transfer.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear TXPDMAEN bit of QSPI_PDMACTL register to disable TX PDMA transfer function.
  */
#define QSPI_DISABLE_TX_PDMA(qspi) ( (qspi)->PDMACTL &= ~QSPI_PDMACTL_TXPDMAEN_Msk )

/**
  * @brief      Get the count of available data in RX FIFO.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     The count of available data in RX FIFO.
  * @details    Read RXCNT (QSPI_STATUS[27:24]) to get the count of available data in RX FIFO.
  */
#define QSPI_GET_RX_FIFO_COUNT(qspi)   ( ((qspi)->STATUS & QSPI_STATUS_RXCNT_Msk) >> QSPI_STATUS_RXCNT_Pos )

/**
  * @brief      Get the RX FIFO empty flag.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @retval     0 RX FIFO is not empty.
  * @retval     1 RX FIFO is empty.
  * @details    Read RXEMPTY bit of QSPI_STATUS register to get the RX FIFO empty flag.
  */
#define QSPI_GET_RX_FIFO_EMPTY_FLAG(qspi)   ( ((qspi)->STATUS & QSPI_STATUS_RXEMPTY_Msk) >> QSPI_STATUS_RXEMPTY_Pos )

/**
  * @brief      Get the TX FIFO empty flag.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @retval     0 TX FIFO is not empty.
  * @retval     1 TX FIFO is empty.
  * @details    Read TXEMPTY bit of QSPI_STATUS register to get the TX FIFO empty flag.
  */
#define QSPI_GET_TX_FIFO_EMPTY_FLAG(qspi)   ( ((qspi)->STATUS & QSPI_STATUS_TXEMPTY_Msk) >> QSPI_STATUS_TXEMPTY_Pos )

/**
  * @brief      Get the TX FIFO full flag.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @retval     0 TX FIFO is not full.
  * @retval     1 TX FIFO is full.
  * @details    Read TXFULL bit of QSPI_STATUS register to get the TX FIFO full flag.
  */
#define QSPI_GET_TX_FIFO_FULL_FLAG(qspi)   ( ((qspi)->STATUS & QSPI_STATUS_TXFULL_Msk) >> QSPI_STATUS_TXFULL_Pos )

/**
  * @brief      Get the datum read from RX register.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     Data in RX register.
  * @details    Read QSPI_RX register to get the received datum.
  */
#define QSPI_READ_RX(qspi)   ( (qspi)->RX )

/**
  * @brief      Write datum to TX register.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @param[in]  u32TxData The datum which user attempt to transfer through QSPI bus.
  * @return     None.
  * @details    Write u32TxData to QSPI_TX register.
  */
#define QSPI_WRITE_TX(qspi, u32TxData)   ( (qspi)->TX = (u32TxData) )

/**
  * @brief      Set QSPIx_SS pin to high state.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Disable automatic slave selection function and set QSPIx_SS pin to high state.
  */
#define QSPI_SET_SS_HIGH(qspi)   ( (qspi)->SSCTL = ((qspi)->SSCTL & (~QSPI_SSCTL_AUTOSS_Msk)) | (QSPI_SSCTL_SSACTPOL_Msk | QSPI_SSCTL_SS_Msk) )

/**
  * @brief      Set QSPIx_SS pin to low state.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Disable automatic slave selection function and set QSPIx_SS pin to low state.
  */
#define QSPI_SET_SS_LOW(qspi)   ( (qspi)->SSCTL = ((qspi)->SSCTL & (~(QSPI_SSCTL_AUTOSS_Msk | QSPI_SSCTL_SSACTPOL_Msk))) | QSPI_SSCTL_SS_Msk )

/**
  * @brief      Enable Byte Reorder function.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Enable Byte Reorder function. The suspend interval depends on the setting of SUSPITV (QSPI_CTL[7:4]).
  */
#define QSPI_ENABLE_BYTE_REORDER(qspi)   ( (qspi)->CTL |=  QSPI_CTL_REORDER_Msk )

/**
  * @brief      Disable Byte Reorder function.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear REORDER bit field of QSPI_CTL register to disable Byte Reorder function.
  */
#define QSPI_DISABLE_BYTE_REORDER(qspi)   ( (qspi)->CTL &= ~QSPI_CTL_REORDER_Msk )

/**
  * @brief      Set the length of suspend interval.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @param[in]  u32SuspCycle Decides the length of suspend interval. It could be 0 ~ 15.
  * @return     None.
  * @details    Set the length of suspend interval according to u32SuspCycle.
  *             The length of suspend interval is ((u32SuspCycle + 0.5) * the length of one QSPI bus clock cycle).
  */
#define QSPI_SET_SUSPEND_CYCLE(qspi, u32SuspCycle)   ( (qspi)->CTL = ((qspi)->CTL & ~QSPI_CTL_SUSPITV_Msk) | ((u32SuspCycle) << QSPI_CTL_SUSPITV_Pos) )

/**
  * @brief      Set the QSPI transfer sequence with LSB first.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Set LSB bit of QSPI_CTL register to set the QSPI transfer sequence with LSB first.
  */
#define QSPI_SET_LSB_FIRST(qspi)   ( (qspi)->CTL |= QSPI_CTL_LSB_Msk )

/**
  * @brief      Set the QSPI transfer sequence with MSB first.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear LSB bit of QSPI_CTL register to set the QSPI transfer sequence with MSB first.
  */
#define QSPI_SET_MSB_FIRST(qspi)   ( (qspi)->CTL &= ~QSPI_CTL_LSB_Msk )

/**
  * @brief      Set the data width of a QSPI transaction.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @param[in]  u32Width The bit width of one transaction.
  * @return     None.
  * @details    The data width can be 8 ~ 32 bits.
  */
#define QSPI_SET_DATA_WIDTH(qspi, u32Width)   ( (qspi)->CTL = ((qspi)->CTL & ~QSPI_CTL_DWIDTH_Msk) | (((u32Width) & 0x1F) << QSPI_CTL_DWIDTH_Pos) )

/**
  * @brief      Get the QSPI busy state.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @retval     0 QSPI controller is not busy.
  * @retval     1 QSPI controller is busy.
  * @details    This macro will return the busy state of QSPI controller.
  */
#define QSPI_IS_BUSY(qspi)   ( ((qspi)->STATUS & QSPI_STATUS_BUSY_Msk) >> QSPI_STATUS_BUSY_Pos )

/**
  * @brief      Enable QSPI controller.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Set SPIEN (QSPI_CTL[0]) to enable QSPI controller.
  */
#define QSPI_ENABLE(qspi)   ( (qspi)->CTL |= QSPI_CTL_SPIEN_Msk )

/**
  * @brief      Disable QSPI controller.
  * @param[in]  qspi The pointer of the specified QSPI module.
  * @return     None.
  * @details    Clear SPIEN (QSPI_CTL[0]) to disable QSPI controller.
  */
#define QSPI_DISABLE(qspi)   ( (qspi)->CTL &= ~QSPI_CTL_SPIEN_Msk )


/* Function prototype declaration */
uint32_t QSPI_Open(QSPI_T *qspi, uint32_t u32MasterSlave, uint32_t u32QSPIMode, uint32_t u32DataWidth, uint32_t u32BusClock);
void QSPI_Close(QSPI_T *qspi);
void QSPI_ClearRxFIFO(QSPI_T *qspi);
void QSPI_ClearTxFIFO(QSPI_T *qspi);
void QSPI_DisableAutoSS(QSPI_T *qspi);
void QSPI_EnableAutoSS(QSPI_T *qspi, uint32_t u32SSPinMask, uint32_t u32ActiveLevel);
uint32_t QSPI_SetBusClock(QSPI_T *qspi, uint32_t u32BusClock);
void QSPI_SetFIFO(QSPI_T *qspi, uint32_t u32TxThreshold, uint32_t u32RxThreshold);
uint32_t QSPI_GetBusClock(QSPI_T *qspi);
void QSPI_EnableInt(QSPI_T *qspi, uint32_t u32Mask);
void QSPI_DisableInt(QSPI_T *qspi, uint32_t u32Mask);
uint32_t QSPI_GetIntFlag(QSPI_T *qspi, uint32_t u32Mask);
void QSPI_ClearIntFlag(QSPI_T *qspi, uint32_t u32Mask);
uint32_t QSPI_GetStatus(QSPI_T *qspi, uint32_t u32Mask);


/*@}*/ /* end of group QSPI_EXPORTED_FUNCTIONS */

/*@}*/ /* end of group QSPI_Driver */

/*@}*/ /* end of group Standard_Driver */

#ifdef __cplusplus
}
#endif

#endif /* __QSPI_H__ */

/*** (C) COPYRIGHT 2017 Nuvoton Technology Corp. ***/