#ifndef SPI_H
#define SPI_H

#include "gpio.h"

#define MAX_TRANSFER_SIZE 256

enum spi_interface {
	SPI_0,
	SPI_1,
	SPI_2,
};

enum spi_frequency {
	K125,
	K250,
	K500,
	M1,
	M2,
	M4,
	M8,
};

enum spi_clock_polarity {
	ACTIVE_HIGH = 0,
	ACTIVE_LOW = 1,
};

enum spi_clock_phase {
	LEADING = 0,
	TRAILING = 1,
};

enum spi_bits_order {
	MSB_FIRST = 0,
	LSB_FIRST = 0,
};

void spi_master_init(enum spi_interface spi, enum gpio_pin clock, enum gpio_pin mosi, enum gpio_pin miso, enum spi_bits_order order, enum spi_clock_polarity polarity, enum spi_clock_phase phase, enum spi_frequency frequency, char overread_char);

u8 spi_master_transfer(enum spi_interface spi, u8 tx_size, u8 tx[], u8 rx_size, u8 rx[]);

void spi_master_stop(enum spi_interface spi, enum gpio_pin clock, enum gpio_pin mosi, enum gpio_pin miso);

#endif