led.c

来自「第三届“飞思卡尔”智能车大赛」· C语言 代码 · 共 31 行

 /*
  ICC-AVR application builder : 2008-01-24 15:51:26
  Target : s12dg128b
  Crystal: 16Mhz
  Designed by Chiu Sir
  E-mail:[e-mail] 
 */

#include <mc9s12dg128.h>     /* derivative information */
#include "defs.h"
#include "delay.h"


void ledloop(void)      //<--
{
  unsigned char ii;
  for(ii=0;ii<4;ii++)
  {
    PORTB=~((0X01<<ii)|(0x80>>ii));
    delayms(20);
  }
  PORTB=0X00;           //off
  delayms(40);
  for(ii=4;ii<8;ii++)   //-->
  {
    PORTB=~((0X01<<ii)|(0x80>>ii));
    delayms(20);
  }
  PORTB=0Xff;           //on
  delayms(100);
}