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#ifndef SPI_H

#define	SPI_H

#include "defines.h"

#define MAXSPIBUF 64

// Option to use interrupt. If interrupt are used, SPI write does not block but

//  there is a longer delay between reading/writing data

//#define SPI2_USE_INTERRUPT

// SPI speed selection

#define SPI2_FOSC_64        0b0010

#define SPI2_FOSC_16        0b0001

#define SPI2_FOSC_8         0b1010

#define SPI2_FOSC_4         0b0000

typedef struct __SPI_DATA {

#ifndef SPI2_WRITE_ONLY

    unsigned char buffer_in[MAXSPIBUF];

    unsigned char buffer_in_read_ind;

    unsigned char buffer_in_write_ind;

    unsigned char buffer_in_len;

#endif

    unsigned char buffer_out[MAXSPIBUF];

    unsigned char buffer_out_ind;

    unsigned char buffer_out_len;

} SPI_DATA;

void SPI2_Init(unsigned char speed);

void SPI2_Write(unsigned char *msg, unsigned int length);

void SPI2_Write_Repeat(unsigned char c, unsigned int length);

#ifndef SPI2_WRITE_ONLY

void SPI2_Recv_Interrupt_Handler(void);

void SPI2_Read(unsigned char length);

unsigned char SPI2_Buffer_Len(void);

unsigned char SPI2_Read_Buffer(unsigned char *buffer);

#endif

#endif	/* SPI_H */