File content as of revision 0:1063a091a062:

/***********************************************************************//**
 * @file    : lpc17xx_spi.h
 * @brief    : Contains all macro definitions and function prototypes
 *                 support for SPI firmware library on LPC17xx
 * @version    : 1.0
 * @date    : 3. April. 2009
 * @author    : HieuNguyen
 **************************************************************************
 * Software that is described herein is for illustrative purposes only
 * which provides customers with programming information regarding the
 * products. This software is supplied "AS IS" without any warranties.
 * NXP Semiconductors assumes no responsibility or liability for the
 * use of the software, conveys no license or title under any patent,
 * copyright, or mask work right to the product. NXP Semiconductors
 * reserves the right to make changes in the software without
 * notification. NXP Semiconductors also make no representation or
 * warranty that such application will be suitable for the specified
 * use without further testing or modification.
 **************************************************************************/

/* Peripheral group ----------------------------------------------------------- */
/** @defgroup SPI
 * @ingroup LPC1700CMSIS_FwLib_Drivers
 * @{
 */

#ifndef LPC17XX_SPI_H_
#define LPC17XX_SPI_H_

/* Includes ------------------------------------------------------------------- */
#include "cmsis.h"
#include "lpc_types.h"


#ifdef __cplusplus
extern "C"
{
#endif

/* Private Macros ------------------------------------------------------------- */
/** @defgroup SPI_Private_Macros
 * @{
 */

/*********************************************************************//**
 * Macro defines for SPI Control Register
 **********************************************************************/
/** @defgroup SPI_REGISTER_BIT_DEFINITION
 * @{
 */

/** Bit enable, the SPI controller sends and receives the number
 * of bits selected by bits 11:8 */
#define SPI_SPCR_BIT_EN            ((uint32_t)(1<<2))
/** Clock phase control bit */
#define SPI_SPCR_CPHA_SECOND    ((uint32_t)(1<<3))
/** Clock polarity control bit */
#define SPI_SPCR_CPOL_LOW         ((uint32_t)(1<<4))
/** SPI master mode enable */
#define SPI_SPCR_MSTR             ((uint32_t)(1<<5))
/** LSB enable bit */
#define SPI_SPCR_LSBF            ((uint32_t)(1<<6))
/** SPI interrupt enable bit */
#define SPI_SPCR_SPIE            ((uint32_t)(1<<7))
/**  When bit 2 of this register is 1, this field controls the
number of bits per transfer */
#define SPI_SPCR_BITS(n)        ((n==0) ? ((uint32_t)0) : ((uint32_t)((n&0x0F)<<8)))
/** SPI Control bit mask */
#define SPI_SPCR_BITMASK        ((uint32_t)(0xFFC))


/*********************************************************************//**
 * Macro defines for  SPI Status Register
 **********************************************************************/
/** Slave abort */
#define SPI_SPSR_ABRT        ((uint32_t)(1<<3))
/** Mode fault */
#define SPI_SPSR_MODF        ((uint32_t)(1<<4))
/** Read overrun */
#define SPI_SPSR_ROVR        ((uint32_t)(1<<5))
/** Write collision */
#define SPI_SPSR_WCOL        ((uint32_t)(1<<6))
/** SPI transfer complete flag */
#define SPI_SPSR_SPIF         ((uint32_t)(1<<7))
/** SPI Status bit mask */
#define SPI_SPSR_BITMASK    ((uint32_t)(0xF8))


/*********************************************************************//**
 * Macro defines for SPI Data Register
 **********************************************************************/
/** SPI Data low bit-mask */
#define SPI_SPDR_LO_MASK    ((uint32_t)(0xFF))
/** SPI Data high bit-mask */
#define SPI_SPDR_HI_MASK    ((uint32_t)(0xFF00))
/** SPI Data bit-mask */
#define SPI_SPDR_BITMASK    ((uint32_t)(0xFFFF))


/*********************************************************************//**
 * Macro defines for SPI Clock Counter Register
 **********************************************************************/
/** SPI clock counter setting */
#define SPI_SPCCR_COUNTER(n)     ((uint32_t)(n&0xFF))
/** SPI clock counter bit-mask */
#define SPI_SPCCR_BITMASK        ((uint32_t)(0xFF))


/***********************************************************************
 * Macro defines for SPI Test Control Register
 **********************************************************************/
/** SPI Test bit */
#define SPI_SPTCR_TEST_MASK    ((uint32_t)(0xFE))
/** SPI Test register bit mask */
#define SPI_SPTCR_BITMASK    ((uint32_t)(0xFE))



/*********************************************************************//**
 * Macro defines for SPI Test Status Register
 **********************************************************************/
/** Slave abort */
#define SPI_SPTSR_ABRT        ((uint32_t)(1<<3))
/** Mode fault */
#define SPI_SPTSR_MODF        ((uint32_t)(1<<4))
/** Read overrun */
#define SPI_SPTSR_ROVR        ((uint32_t)(1<<5))
/** Write collision */
#define SPI_SPTSR_WCOL        ((uint32_t)(1<<6))
/** SPI transfer complete flag */
#define SPI_SPTSR_SPIF         ((uint32_t)(1<<7))
/** SPI Status bit mask */
#define SPI_SPTSR_MASKBIT    ((uint32_t)(0xF8))



/*********************************************************************//**
 * Macro defines for SPI Interrupt Register
 **********************************************************************/
/** SPI interrupt flag */
#define SPI_SPINT_INTFLAG     ((uint32_t)(1<<0))
/** SPI interrupt register bit mask */
#define SPI_SPINT_BITMASK     ((uint32_t)(0x01))

/**
 * @}
 */

/**
 * @}
 */


/* Public Types --------------------------------------------------------------- */
/** @defgroup SPI_Public_Types
 * @{
 */

/** @brief SPI configuration structure */
typedef struct {
    uint32_t Databit;         /** Databit number, should be SPI_DATABIT_x,
                            where x is in range from 8 - 16 */
    uint32_t CPHA;            /** Clock phase, should be:
                            - SPI_CPHA_FIRST: first clock edge
                            - SPI_CPHA_SECOND: second clock edge */
    uint32_t CPOL;            /** Clock polarity, should be:
                            - SPI_CPOL_HI: high level
                            - SPI_CPOL_LO: low level */
    uint32_t Mode;            /** SPI mode, should be:
                            - SPI_MASTER_MODE: Master mode
                            - SPI_SLAVE_MODE: Slave mode */
    uint32_t DataOrder;        /** Data order, should be:
                            - SPI_DATA_MSB_FIRST: MSB first
                            - SPI_DATA_LSB_FIRST: LSB first */
    uint32_t ClockRate;        /** Clock rate,in Hz, should not exceed
                            (SPI peripheral clock)/8 */
} SPI_CFG_Type;


/**
 * @brief SPI Transfer Type definitions
 */
typedef enum {
    SPI_TRANSFER_POLLING = 0,    /**< Polling transfer */
    SPI_TRANSFER_INTERRUPT    /**< Interrupt transfer */
} SPI_TRANSFER_Type;

/**
 * @brief SPI Data configuration structure definitions
 */
typedef struct {
    void *tx_data;            /**< Pointer to transmit data */
    void *rx_data;            /**< Pointer to transmit data */
    uint32_t length;            /**< Length of transfer data */
    uint32_t counter;            /**< Data counter index */
    uint32_t status;            /**< Current status of SPI activity */
    void (*callback)(void);        /**< Pointer to Call back function when transmission complete
                                used in interrupt transfer mode */
} SPI_DATA_SETUP_Type;

/**
 * @}
 */


/* Public Macros -------------------------------------------------------------- */
/** @defgroup SPI_Public_Macros
 * @{
 */

/** Macro to determine if it is valid SPI port number */
#define PARAM_SPIx(n)    (((uint32_t *)n)==((uint32_t *)LPC_SPI))

/*********************************************************************//**
 * SPI configuration parameter defines
 **********************************************************************/
/** Clock phase control bit */
#define SPI_CPHA_FIRST            ((uint32_t)(0))
#define SPI_CPHA_SECOND            SPI_SPCR_CPHA_SECOND
#define PARAM_SPI_CPHA(n)     ((n==SPI_CPHA_FIRST) || (n==SPI_CPHA_SECOND))

/** Clock polarity control bit */
#define SPI_CPOL_HI                ((uint32_t)(0))
#define SPI_CPOL_LO                SPI_SPCR_CPOL_LOW
#define PARAM_SPI_CPOL(n)    ((n==SPI_CPOL_HI) || (n==SPI_CPOL_LO))

/** SPI master mode enable */
#define SPI_SLAVE_MODE            ((uint32_t)(0))
#define SPI_MASTER_MODE            SPI_SPCR_MSTR
#define PARAM_SPI_MODE(n)    ((n==SPI_SLAVE_MODE) || (n==SPI_MASTER_MODE))

/** LSB enable bit */
#define SPI_DATA_MSB_FIRST        ((uint32_t)(0))
#define SPI_DATA_LSB_FIRST        SPI_SPCR_LSBF
#define PARAM_SPI_DATA_ORDER(n) ((n==SPI_DATA_MSB_FIRST) || (n==SPI_DATA_LSB_FIRST))

/** SPI data bit number defines */
#define SPI_DATABIT_16        SPI_SPCR_BITS(0)        /*!< Databit number = 16 */
#define SPI_DATABIT_8        SPI_SPCR_BITS(0x08)     /*!< Databit number = 8 */
#define SPI_DATABIT_9        SPI_SPCR_BITS(0x09)     /*!< Databit number = 9 */
#define SPI_DATABIT_10        SPI_SPCR_BITS(0x0A)     /*!< Databit number = 10 */
#define SPI_DATABIT_11        SPI_SPCR_BITS(0x0B)     /*!< Databit number = 11 */
#define SPI_DATABIT_12        SPI_SPCR_BITS(0x0C)     /*!< Databit number = 12 */
#define SPI_DATABIT_13        SPI_SPCR_BITS(0x0D)     /*!< Databit number = 13 */
#define SPI_DATABIT_14        SPI_SPCR_BITS(0x0E)     /*!< Databit number = 14 */
#define SPI_DATABIT_15        SPI_SPCR_BITS(0x0F)     /*!< Databit number = 15 */
#define PARAM_SPI_DATABIT(n)    ((n==SPI_DATABIT_16) || (n==SPI_DATABIT_8) \
|| (n==SPI_DATABIT_9) || (n==SPI_DATABIT_10) \
|| (n==SPI_DATABIT_11) || (n==SPI_DATABIT_12) \
|| (n==SPI_DATABIT_13) || (n==SPI_DATABIT_14) \
|| (n==SPI_DATABIT_15))


/*********************************************************************//**
 * SPI Status Flag defines
 **********************************************************************/
/** Slave abort */
#define SPI_STAT_ABRT        SPI_SPSR_ABRT
/** Mode fault */
#define SPI_STAT_MODF        SPI_SPSR_MODF
/** Read overrun */
#define SPI_STAT_ROVR        SPI_SPSR_ROVR
/** Write collision */
#define SPI_STAT_WCOL        SPI_SPSR_WCOL
/** SPI transfer complete flag */
#define SPI_STAT_SPIF        SPI_SPSR_SPIF
#define PARAM_SPI_STAT(n)    ((n==SPI_STAT_ABRT) || (n==SPI_STAT_MODF) \
|| (n==SPI_STAT_ROVR) || (n==SPI_STAT_WCOL) \
|| (n==SPI_STAT_SPIF))


/* SPI Status Implementation definitions */
#define SPI_STAT_DONE        (1UL<<8)        /**< Done */
#define SPI_STAT_ERROR        (1UL<<9)        /**< Error */

/**
 * @}
 */


/* Public Functions ----------------------------------------------------------- */
/** @defgroup SPI_Public_Functions
 * @{
 */

void SPI_SetClock (LPC_SPI_TypeDef *SPIx, uint32_t target_clock);
void SPI_DeInit(LPC_SPI_TypeDef *SPIx);
void SPI_Init(LPC_SPI_TypeDef *SPIx, SPI_CFG_Type *SPI_ConfigStruct);
void SPI_ConfigStructInit(SPI_CFG_Type *SPI_InitStruct);
void SPI_SendData(LPC_SPI_TypeDef *SPIx, uint16_t Data);
uint16_t SPI_ReceiveData(LPC_SPI_TypeDef *SPIx);
int32_t SPI_ReadWrite (LPC_SPI_TypeDef *SPIx, SPI_DATA_SETUP_Type *dataCfg, SPI_TRANSFER_Type xfType);
void SPI_IntCmd(LPC_SPI_TypeDef *SPIx, FunctionalState NewState);
IntStatus SPI_GetIntStatus (LPC_SPI_TypeDef *SPIx);
void SPI_ClearIntPending(LPC_SPI_TypeDef *SPIx);
uint32_t SPI_GetStatus(LPC_SPI_TypeDef *SPIx);
FlagStatus SPI_CheckStatus (uint32_t inputSPIStatus,  uint8_t SPIStatus);
void SPI_StdIntHandler(void);

/**
 * @}
 */

#ifdef __cplusplus
}
#endif

#endif /* LPC17XX_SPI_H_ */

/**
 * @}
 */

/* --------------------------------- End Of File ------------------------------ */