spi2.h

#ifndef _SPI_H_

#define _SPI_H_

#include <avr/io.h>

extern void spi_init();

extern void spi_transfer_sync (uint8_t * dataout, uint8_t * datain, uint8_t len);

extern void spi_transmit_sync (uint8_t * dataout, uint8_t len);

extern uint8_t spi_fast_shift (uint8_t data);

#endif /* _SPI_H_ */