#include "spi.h"

#include <avr/interrupt.h>

#define SWAP_BIT (BV(USIWM0) | BV(USICLK) | BV(USITC) | BV(USICS1))


void sendByteOnSPI(uint8_t byte) {
	USIDR = byte;
	
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
	USICR = SWAP_BIT;
}