#include "avr/io.h"
#include "spi.h"
#include "util/delay.h"

#define MAX 1023
#define MIN 0

#define DA_CS_SET()    PORTA|= (1<<PA2)
#define DA_CS_RESET()  PORTA&=~(1<<PA2)
#define RTC_CE_SET()   PORTC|= (1<<PC7)
#define RTC_CE_RESET() PORTC&=~(1<<PC7)


void DA_Convert(unsigned int DAVal)
{
	DA_CS_RESET();
	SPI_RW((DAVal>>6)&0xFF);
	SPI_RW((DAVal<<2)&0xFF);
	DA_CS_SET();
}


int main(void)
{
	int i=0;

	/* Set LED and Smg LE pin as output , databus as output */
	DDRA |=(1<<PA4)|(1<<PA5)|(1<<PA6); 
	DDRB  = 0xFF;

	/* Off the Smg display */
	PORTA|= (1<<PA5);
	PORTB = 0x00;
	PORTA&=~(1<<PA5);

	/* Off the LED display */
	PORTA|= (1<<PA6);
	PORTB = 0xFF;
	PORTA&=~(1<<PA6);

	DDRA |= (1<<PA2);
	DDRC |= (1<<PC7);
	RTC_CE_RESET();
	SPI_Init();
	while(1)
	{
		for(i=0;i<MAX;i+=8)
			DA_Convert(i);

	}
	return 0;
}