#ifndef __SPI_MASTER_H
#define __SPI_MASTER_H
//-----------------------------------------------------------------------------

#include "typedefs.h"
#include "application.h"
#include "usart.h"
//-----------------------------------------------------------------------------

// Port Definitions
#define SPI_PRT PORTB
#define SPI_DDR DDRB

// Bit Definitions
#define SPI_SCLK PB7
#define SPI_MOSI PB5
#define SPI_MISO PB6
// #define SPI_SS 	 PB4  // not in this application!!! danger
#define SPI_E_CS PB4 		//device 0
#define SPI_AD_CS PD3 		//device 1
#define SPI_M_CS PD4		//device 2
#define SPI_A_CS PD5		//device 3

#define SPI_READ_BUFFER_SIZE 16
#define SPI_WRITE_BUFFER_SIZE 16

#define SPI_MAX_SLAVE_INDEX 2
#define SPI_MAX_CLOCK_INDEX 6

//-----------------------------------------------------------------------------

extern volatile U08 spi_clock_index;
extern volatile U08 spi_cpol;
extern volatile U08 spi_cpha;
extern volatile U08 spi_dord;
extern volatile U08 SPI_DEVICE_SS[4];
extern volatile BOOL SPI_DEVICE_ACTIVE_HIGH[4];

extern volatile U08 spi_read_buffer[SPI_READ_BUFFER_SIZE];
extern volatile U08 spi_write_buffer[SPI_WRITE_BUFFER_SIZE];
//-----------------------------------------------------------------------------

void spi_init(void);
void spi_transfer(U08 bytes, U08 device);
U08 spi_transfer_byte(U08 data);
void spi_set_clock_index(U08 clock_index);
void spi_set_dord(U08 dord);
void spi_set_cpol(U08 cpol);
void spi_set_cpha(U08 cpha);
void spi_setup(void);
void spi_transfer_string(U08 length, U08* addr, U08 device);
//-----------------------------------------------------------------------------

#endif