STC89C52单片机实现LED流水灯PLUS

修改计时代码已实现可以自由设定闪烁间隔时间

#include <REGX52.H>

void Delay1ms(unsigned int xms)    //@12.000MHz
{
  unsigned char i, j;
  while(xms)
  {
    i = 2;
    j = 239;
    do
  {
    while (--j);
  } while (--i);
    xms=xms-1;
  }
  
}

void main()
{
  while(1)
  {
    P2=0xFE;  //1111 1110
    Delay1ms(500);
    P2=0xFD;  //1111 1101
    Delay1ms(500);
    P2=0xFB;  //1111 1011
    Delay1ms(500);
    P2=0xF7;  //1111 0111
    Delay1ms(500);
    P2=0xEF;  //1110 1111
    Delay1ms(500);
    P2=0xDF;  //1101 1111
    Delay1ms(500);
    P2=0xBF;  //1011 1111
    Delay1ms(500);
    P2=0x7F;  //0111 1111
    Delay1ms(500);
  }
}