#include <avr/io.h>    
#define MOSI 5
#define SCK 7
int main (void)
{
  DDRB = (1<<MOSI)|(1<<SCK);		
  DDRA = 0xFF ;				
  SPCR = (1<<SPE)|(1<<MSTR)|(1<<SPR0);
  while(1){				
    SPDR = 'G';				
    while(!(SPSR & (1<<SPIF)));		
    PORTA = SPDR ;				
  }					  		
  return 0 ;
}