RS232로 출력을 제어

#include <mega128.h>

#include <delay.h>

#include <stdio.h>

// Alphanumeric LCD Module functions

#asm

.equ __lcd_port=0x1B

#endasm

#include <lcd.h>

char rxd;

// USART0 Receiver interrupt service routine

interrupt [USART0_RXC] void uart0_rx_isr(void)

{

// 전송전 문자를 받는다.

rxd=getchar();

// LCD에 문자를 표시한다.

lcd_gotoxy(0,0);

lcd_putchar(rxd);

// 문자"1"=B0 Led On 문자"2"=B1 Led On 문자"3"=B2 Led On

if(rxd==0x31)

PORTB=~0x01;

else if(rxd==0x32)

PORTB=~0x02;

else if(rxd==0x33)

PORTB=~0x04;

}

void main(void)

{

// Port B initialization

// Func0=Out Func1=Out Func2=Out Func3=Out Func4=Out Func5=Out Func6=Out Func7=Out

// State0=0 State1=0 State2=0 State3=0 State4=0 State5=0 State6=0 State7=0

PORTB=0x00;

DDRB=0xFF;

// USART0 initialization

// Communication Parameters: 8 Data, 1 Stop, No Parity

// USART0 Receiver: On

// USART0 Transmitter: On

// USART0 Mode: Asynchronous

// USART0 Baud rate: 9600

UCSR0A=0x00;

UCSR0B=0xD8;

UCSR0C=0x06;

UBRR0H=0x00;

UBRR0L=0x67;

// LCD module initialization

lcd_init(16);

// Global enable interrupts

#asm("sei")

while (1)

{

// Place your code here

PORTB=~0x00;

delay_ms(100);

};

}

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