单片机LED流星雨源程序分享

电路很简单，从程序中可以看出来，我就不画了.

1. #include<reg52.h>   
   
2. #define uchar unsigned char
   
3. #define led P1     
   
4. bit flag=0;      
   
5. uchar code lshift[3]={0x07,0x03,0x01};
   
6. uchar code shift[7]={0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe};
   
7. //imitate PWM data
   
8. uchar code sta0[100]={  0x0f,0x8f,0x8f,0x8f,0x8f,0x8f,0x8f,0x8f,0x8f,0x8f,
   
9.                         0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,
   
10.       0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,0xcf,
    
11.       0xcf,0xcf,0xcf,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
    
12.       0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
    
13.       0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
    
14.       0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
    
15.       0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
    
16.       0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,
    
17.       0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef,0xef      
    
18.         };
    
19. //functions statement
    
20. void delay(uchar ms);
    
21. uchar exchg(uchar dat);
    
22. //main function
    
23. void main()   
    
24. {
    
25.   uchar i,j,k,x,sdata;
    
26.   while(1)
    
27.   {
    
28.   for(k=1;k<8;k++)
    
29.     for(i=0;i<22;i++)
    
30.    for(j=0;j<100;j++)
    
31.      {
    
32.       sdata=(sta0[j]>>k)|shift[k-1];
    
33.       if(flag==1)  led=exchg(sdata);
    
34.    else led=sdata;   
    
35.   }
    
36.   for(x=1;x<4;x++)
    
37.     for(i=0;i<22;i++)
    
38.    for(j=0;j<100;j++)
    
39.      {
    
40.       sdata=( sta0[j]<<(4-x) )|lshift[x-1];
    
41.       if(flag==1)  led=exchg(sdata);
    
42.    else led=sdata;
    
43.   }
    
44.   
    
45. 
    
46. }
    
47. }
    
48. void delay(uchar ms)
    
49. {
    
50.    uchar n;
    
51.   while(ms--)
    
52.   {
    
53.     for(n=125;n>0;n--);
    
54.   }
    
55. }
    
56. uchar exchg(uchar dat) //对字节的高位和低位进行互换！
    
57. {
    
58.    uchar temp;
    
59.    temp=
    
60.    ((dat&0x01)<<7)|
    
61.    ((dat&0x02)<<5)|
    
62.    ((dat&0x04)<<3)|
    
63.    ((dat&0x08)<<1)|
    
64.    ((dat&0x10)>>1)|
    
65.    ((dat&0x20)>>3)|
    
66.    ((dat&0x40)>>5)|
    
67.    ((dat&0x80)>>7);
    
68. return temp;
    
69. }

复制代码