4-2.c

来自「这是HOLTEK HT 48系列单片机应用实例」· C语言 代码 · 共 28 行

unsigned char _pac @ 0x13;
unsigned char _pa  @ 0x12;
unsigned int ui;
#define _pa7	_12_7
void delay()
{unsigned long int i;  for(i=0;i<2000;i++);}
void main()
{
 unsigned int y;
 _pac = 0x00;
 while(1)
 {
  ui = 0x01;
  for(y=0;y<7;y++)
  {
  _pa = ui;
  _rl(&ui);
  delay();
  }
  for(y=0;y<7;y++)
  {
  _pa = ui;
  _rr(&ui);
  delay();
  }
 }
}