#include <atmel_start.h>
#include <avr/interrupt.h>
#include <util/delay.h>
#include <usart_basic.h>
#include "UART.h"


void UART_INIT(void)
{
	UCSR0A |= _BV(U2X0);

	UBRR0H = 0X00;
	UBRR0L = 207;

	UCSR0C |= 0X06;

	UCSR0B |= _BV(RXEN0);
	UCSR0B |= _BV(TXEN0);
}

unsigned char UART_receive(void)
{
	while(!(UCSR0A & (1<<RXC0)));			//UART 데이터 수신
	return UDR0;
}

void UART_transmit(unsigned char data)
{
	while( !(UCSR0A & (1<<UDRE0)));			//UART 데이터 송신
	UDR0 = data;
}

int main(void)
{
	unsigned char data;
	atmel_start_init();

	UART_INIT();
	while (1) {
		data = UART_receive();
		UART_transmit(data);
		if (data == '1')
		{
			LEDGreen_set_level(false);		//수신된 값이 1이면 LEDGreen On
		}
		else if(data == '2')
		{
			LEDYellow_set_level(false);		//수신된 값이 2면 LEDYellow On
		}
		else if (data == '3')
		{
			LEDGreen_set_level(false);
			LEDYellow_set_level(false);		//수신된 값이 3이면 LED All On
		}
		else
		{
			LEDGreen_set_level(true);
			LEDYellow_set_level(true);		//그 외 값이면 LED ALL OFF
		}
	}
	return 0;
}