流星雨

ti

#include
#define uchar unsigned char
#define led P1
bit flag=0;
uchar code lshift[3]={0x07,0x03,0x01};
uchar code shift[7]={0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe};
//imitate PWM data
uchar code sta0[100]={  0x0f,0x8f,0x8f,0x8f,0x8f,0x8f,0x8f,0x8f,0x8f,0x8f,
                     0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,
   0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,
   0xcf,0xcf,0xcf,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
   0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
   0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
   0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
   0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
   0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
   0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef
      };
//functions statement
void delay(uchar ms);
uchar exchg(uchar dat);
//main function
void main()
{
  uchar i,j,k,x,sdata;
  while(1)
  {
  for(k=1;k<8;k++)
for(i=0;i<22;i++)
for(j=0;j<100;j++)
   {
   sdata=(sta0[j]>>k)|shift[k-1];
   if(flag==1)  led=exchg(sdata);
else led=sdata;
  }
  for(x=1;x<4;x++)
for(i=0;i<22;i++)
for(j=0;j<100;j++)
   {
   sdata=( sta0[j]<<(4-x) )|lshift[x-1];
   if(flag==1)  led=exchg(sdata);
else led=sdata;
  }

}
}
void delay(uchar ms)
{
uchar n;
  while(ms--)
  {
for(n=125;n>0;n--);
  }
}
uchar exchg(uchar dat) //对字节的高位和低位进行互换！
{
uchar temp;
temp=
((dat&0x01)<<7)|
((dat&0x02)<<5)|
((dat&0x04)<<3)|
((dat&0x08)<<1)|
((dat&0x10)>>1)|
((dat&0x20)>>3)|
((dat&0x40)>>5)|
((dat&0x80)>>7);
return temp;
}