avr/spi/spi.h

#ifndef __MORSE_H__
#define __MORSE_H__

#include <base.h>
#include <stdlib.h>

typedef struct SPI {
    gpio_t clock;
    gpio_t data_out;
    gpio_t data_in;
    gpio_t chip_select;
} spi_t;

void spi_initialize(spi_t *spi);
void spi_acquire(spi_t *spi);
void spi_release(spi_t *spi);
uint8_t spi_transfer_byte(spi_t *spi, uint8_t output);

#endif