mega16.c

AVR 初学者

//ICC-AVR application builder : 2008-8-1 15:39:15
// Target : M16
// Crystal: 16.000Mhz

#include <iom16v.h>
#include <macros.h>

void port_init(void)
{
 PORTA = 0x00;
 DDRA  = 0xFF;
 PORTB = 0x00;
 DDRB  = 0x00;
 PORTC = 0x00; //m103 output only
 DDRC  = 0x00;
 PORTD = 0x00;
 DDRD  = 0x00;
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up0
 CLI(); //disable all interrupts
 port_init();

 MCUCR = 0x00;
 GICR  = 0x00;
 TIMSK = 0x00; //timer interrupt sources
 SEI(); //re-enable interrupts
 //all peripherals are now initialized
}

void main()
{
  unsigned int i,j;
  init_devices();
  PORTA = 0XAA;
  while(1)
  {
    for(i=0;i<1000;i++)
  	  for(j=0;j<1000;j++);
    PORTA = ~PORTA;
  }
}