TX UART

main.c

#include <avr/io.h>
#include"ButtonPress.h"

int main(void)
{
	DDRB |= 1 << PINB1;
	DDRB &= ~(1 << PINB0);
	PORTB |= 1 << PINB0;

	int UBBRValue = 25;

	//Put the upper part of the baud number here (bits 8 to 11)
	UBRRH = (unsigned char) (UBBRValue >> 8);

	//Put the remaining part of the baud number here
	UBRRL = (unsigned char) UBBRValue; 

	//Enable the receiver and transmitter
	UCSRB = (1 << RXEN) | (1 << TXEN);

	//Set 2 stop bits and data bit length is 8-bit
	UCSRC = (1 << USBS) | (3 << UCSZ0); 

	while (1){
		if (ButtonPressed(0, PINB, 0, 100)){
			PORTB ^= 1 << PINB1;

			//Wait until the Transmitter is ready
			while (! (UCSRA & (1 << UDRE)) ); 

			//Get that data outa here!
			UDR = 0b11111111;
		}
	}
}