spi_dma.h

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/* ---------------------------------------------------------------------------- */

#ifndef _SPI_DMA_
#define _SPI_DMA_

/*----------------------------------------------------------------------------
 *        Headers
 *----------------------------------------------------------------------------*/

#include "chip.h"

/*----------------------------------------------------------------------------
 *        Definitions
 *----------------------------------------------------------------------------*/

#define SPID_ERROR          1

#define SPID_ERROR_LOCK     2

/*----------------------------------------------------------------------------
 *        Macros
 *----------------------------------------------------------------------------*/

#define SPID_CSR_SCBR(mck, spck)    SPI_CSR_SCBR((mck) / (spck))

#define SPID_CSR_DLYBS(mck, delay)  SPI_CSR_DLYBS((((delay) * \
        ((mck) / 1000000)) / 1000) + 1)

#define SPID_CSR_DLYBCT(mck, delay) SPI_CSR_DLYBCT((((delay) / 32 * \
        ((mck) / 1000000)) / 1000) + 1)

#ifdef __cplusplus
extern "C" {
#endif

/*----------------------------------------------------------------------------
 *        Types
 *----------------------------------------------------------------------------*/

typedef void (*SpidCallback)(uint8_t, void *);

typedef struct _SpidCmd {
    uint8_t *pTxBuff;
    uint8_t TxSize;
    uint8_t *pRxBuff;
    uint16_t RxSize;
    uint8_t spiCs;
    SpidCallback callback;
    void *pArgument;
} SpidCmd;

typedef struct _Spid {
    Spi *pSpiHw;
    SpidCmd *pCurrentCommand;
    sXdmad *pXdmad;
    uint8_t spiId;
    volatile int8_t semaphore;
} Spid;

/*----------------------------------------------------------------------------
 *        Exported functions
 *----------------------------------------------------------------------------*/

extern uint32_t SPID_Configure(Spid *pSpid,
                                Spi *pSpiHw,
                                uint8_t spiId,
                                uint32_t SpiMode,
                                sXdmad *pXdmad);

extern void SPID_ConfigureCS(Spid *pSpid, uint32_t dwCS, uint32_t dwCsr);

extern uint32_t SPID_SendCommand(Spid *pSpid, SpidCmd *pCommand);

extern void SPID_Handler(Spid *pSpid);

extern void SPID_DmaHandler(Spid *pSpid);

extern uint32_t SPID_IsBusy(const Spid *pSpid);

#ifdef __cplusplus
}
#endif

#endif /* #ifndef _SPI_DMA_ */