// Bit macro........................................
#define SETBIT(ADDRESS,BIT) (ADDRESS |= (1<<(BIT)))
#define CLRBIT(ADDRESS,BIT) (ADDRESS &= ~(1<<(BIT)))
#define TSTBIT(ADDRESS,BIT) (ADDRESS & (1<<(BIT)))
// UART macro.......................................
#define PUT_CHAR_TO_UART_0(DATA); {\
SETBIT(UCSR0A,TXC0); UDR0=DATA; while(!TSTBIT(UCSR0A,TXC0)){;}\
}