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#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
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