標(biāo)題: 單片機(jī)簡易萬年歷實(shí)例 [打印本頁]

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作者: liuda    時(shí)間: 2015-1-21 23:26
標(biāo)題: 單片機(jī)簡易萬年歷實(shí)例
是用51hei單片機(jī)開發(fā)板 電路圖詳見：http://www.torrancerestoration.com/f/51hei-5.pdf  的數(shù)碼管部分， 用2個(gè)74hc573 鎖存，p0口作為數(shù)據(jù)口 ，注意圖中要改一下p3.6和p3.7分別是段和位的鎖存端口.P2口上面是按鍵

1. #include<reg52.h>
   
2. #define uchar unsigned char
   
3. #define uint unsigned int
   
4. //======================
   
5. uchar code SEG7[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
   
6. uchar  ACT[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
   
7. uchar code WEEK_SEG7[8]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x7f};
   
8. sbit D=P3^6;
   
9. sbit V=P3^7;
   
10. uchar deda,sec,min,hour,week=1;
    
11. uchar cnt;
    
12. //===========
    
13. void init(void)
    
14. {
    
15. TMOD=0x11;
    
16. TH0=-(50000/256);
    
17. TL0=-(50000%256);
    
18. ET0=1;
    
19. TR0=1;
    
20. TH1=-(1000/256);
    
21. TL1=-(1000%256);
    
22. ET1=1;
    
23. TR1=1;
    
24. EA=1;
    
25. }
    
26. //==========
    
27. void time0(void) interrupt 1
    
28. {
    
29. TH0=-(50000/256);
    
30. TL0=-(50000%256);
    
31. deda++;
    
32. }
    
33. //============
    
34. void time1(void) interrupt 3
    
35. {
    
36. TH1=-(1000/256);
    
37. TL1=-(1000%256);
    
38. if(++cnt>7)cnt=0;
    
39. switch(cnt)
    
40. {
    
41. case 0:D=1;P0=SEG7[sec%10];D=0;P0=0xff;V=1;P0=ACT[5];V=0;break;
    
42. case 1:D=1;P0=SEG7[sec/10];D=0;P0=0xff;V=1;P0=ACT[4];V=0;break;
    
43. case 2:D=1;P0=SEG7[min%10];D=0;P0=0xff;V=1;P0=ACT[3];V=0;break;
    
44. case 3:D=1;P0=SEG7[min/10];D=0;P0=0xff;V=1;P0=ACT[2];V=0;break;
    
45. case 4:D=1;P0=SEG7[hour%10];D=0;P0=0xff;V=1;P0=ACT[1];V=0;break;
    
46. case 5:D=1;P0=SEG7[hour/10];D=0;P0=0xff;V=1;P0=ACT[0];V=0;break;
    
47. case 6:D=1;P0=0x00;D=0;P0=0xff;V=1;P0=0xff;V=0;break;
    
48. case 7:D=1;P0=WEEK_SEG7[week];D=0;P0=0xff;V=1;P0=ACT[7];V=0;break;
    
49. default:break;
    
50.     }
    
51. }
    
52. //========
    
53. void conv(void)
    
54. {
    
55. if(deda>=20){deda=0;sec++;}
    
56. if(sec>=60){sec=0;min++;}
    
57. if(min>=60){min=0;hour++;}
    
58. if(hour>=24){hour=0;week++;}
    
59. if(week>7){week=1;}
    
60. }
    
61. //===========
    
62. void main(void)
    
63. {
    
64. init();
    
65. while(1)
    
66. {
    
67. conv();
    
68.     }
    
69. }

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