mega8.c

来自「AVR 初学者」· C语言 代码 · 共 43 行

//ICC-AVR application builder : 2008-8-1 19:01:17
// Target : M8
// Crystal: 16.000Mhz

#include <iom8v.h>
#include <macros.h>

void port_init(void)
{
 PORTB = 0x00;
 DDRB  = 0x00;
 PORTC = 0x00; //m103 output only
 DDRC  = 0x7F;
 PORTD = 0x00;
 DDRD  = 0x00;
}

//call this routine to initialize all peripherals
void init_devices(void)
{
 //stop errant interrupts until set up
 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,K;
  init_devices();
  PORTC = 0X2A;
  while(1)
  {
    for(i=0;i<500;i++)
  	  for(j=0;j<300;j++);
    PORTC = ~PORTC;
  }
}