transmiter

#define F_CPU 1000000UL
#include <avr/io.h>
#include <avr/interrupt.h>

int main(void)
{
	DDRB&= ~(1<<PINB0);
	PORTB|= (1<<PINB0);
	DDRB|= (1<<PINB6);
	int pressed=0;
	int pressed_conf=0;
	int released_conf=0;

	int UBRR_val=25;

	UBRR0H = (unsigned char) (UBRR_val  >> 8);
	UBRR0L = (unsigned char) UBRR_val;
	UCSR0B = (1 << RXEN0) | (1 << TXEN0);
	UCSR0C |= (1 << USBS0) | (3 << UCSZ00);


	while(1)
		{

			if( bit_is_clear(PINB, 0) )

			{
				pressed_conf++;
				released_conf=0;
				if(pressed_conf >100)
				{
					if(pressed==0)
					{
					pressed=1;
					PORTB ^= (1<<PINB6);
						while ( !(UCSR0A &(1 <<UDRE0)) )
						{
						UDR0 = 0b11111111;
						}
					}
				pressed_conf=0;
				}
			}

			else
			{
				released_conf++;
				pressed_conf=0;
				if(released_conf >100)
				{
					pressed=0;
					released_conf=0;
				}
			}
		}

}