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  c code
 
/*****************************************************
This program was produced by the
CodeWizardAVR V1.24.8d Professional
Automatic Program Generator
© Copyright 1998-2006 Pavel Haiduc, HP InfoTech s.r.l.
http://www.hpinfotech.com
 
Project : 
Version : 
Date    : 12/29/2007
Author  : le ngoc tuan                            
Company : vagam                            
Comments: 
 
 
Chip type           : ATmega16
Program type        : Application
Clock frequency     : 8.000000 MHz
Memory model        : Small
External SRAM size  : 0
Data Stack size     : 256
*****************************************************/
 
#include <mega16.h> 
#include <delay.h>
 
// Declare your global variables here
 
#define den_xanh PORTB.4
#define den_do   PORTB.5
 
 
 
// External Interrupt 1 service routine
interrupt [EXT_INT1] void ext_int1_isr(void)
{
// Place your code here
  den_xanh=1;den_do=0;//bat den do ,tat den xanh
}
 
 
 
void main(void)
{
// Declare your local variables here
 
// Input/Output Ports initialization
// Port A initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTA=0x00;
DDRA=0x00;
 
// Port B initialization
// Func7=In Func6=Out Func5=Out Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=0 State5=0 State4=T State3=T State2=T State1=T State0=T 
PORTB=0x80;
DDRB=0x30;
 
// Port C initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTC=0x00;
DDRC=0x00;
 
// Port D initialization
// Func7=In Func6=In Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In 
// State7=T State6=T State5=T State4=T State3=T State2=T State1=T State0=T 
PORTD=0x08;
DDRD=0x00;
 
 
 
// External Interrupt(s) initialization
// INT0: Off
// INT1: On
// INT1 Mode: Low level
// INT2: Off
GICR|=0x80;
MCUCR=0x00;
MCUCSR=0x00;
GIFR=0x80;
 
 
 // Global enable interrupts
#asm("sei")
while (1)
      {
den_xanh=0;den_do=1;
      };
}