标题: 单片机+LM016动态计数程序 [打印本页]
作者: mishi123    时间: 2020-6-21 00:31
标题: 单片机+LM016动态计数程序
51单片机学习记录，按时计数选取显示

单片机源程序如下:
  1. #include<reg52.h>
  2. #include<string.h>
  3. #define uchar unsigned char

  5. sbit RS=P1^0;
  6. sbit RW=P1^1;
  7. sbit E=P1^2;
  8. unsigned int num,units=0,tens=0,hundreds=0;
  9. uchar row1[]={"Welcome to China"};
  10. uchar row2[]={"0123456789"};

  12. void delay(uchar ms)
  13. {
  14. uchar k;
  15. while(ms--)
  16. for(k=0;k<123;k++);
  17. }

  19. void command(uchar com)
  20. {
  21. RS=0;
  22. RW=0;
  23. E=1;
  24. P0=com;
  25. E=0;
  26. delay(1);
  27. }

  29. void WriteData(uchar dat)
  30. {
  31. RS=1;
  32. RW=0;
  33. E=1;
  34. P0=dat;
  35. E=0;
  36. delay(1);
  37. }

  39. void init()
  40. {
  41. command(0x38);
  42. command(0x0c);
  43. command(0x06);
  44. command(0x01);
  45. }

  47. void display()
  48. {
  49. if(units==10)units=0,tens++;
  50. if(tens==10)tens=0,hundreds++;
  51. if(hundreds==10)hundreds=0;

  53.         
  54. command(0x80);
  55. for(num=0;num<16;num++)
  56. WriteData(row1[num]),delay(5);

  58. command(0x80+0x40);
  59. WriteData(row2[hundreds]);
  60. command(0x80+0x40+0x01);
  61. WriteData(row2[tens]);
  62. command(0x80+0x40+0x02);
  63. WriteData(row2[units]);
  64. units++;
  65. delay(10);
  66. }

  68. void main()
  69. {
  70. init();
  71. while(1)
  72. display();
  73. }
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exp41.zip

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