标题: 数码管5min倒计时（单片机定时器中断） [打印本页]
作者: fashion666666    时间: 2019-6-6 13:07
标题: 数码管5min倒计时（单片机定时器中断）


单片机源程序如下:
  1. #include<reg51.h>
  2. unsigned char Seg_CA_Data[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e};
  3. unsigned char Seg_CA_Position[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};
  4. void DelayTime10ms(unsigned int DelayValue);
  5. void Seg_Display_Second(unsigned char DisData,unsigned char Seg_Number);
  6. void Seg_Display_Minute(unsigned char DisData,unsigned char Seg_Number);
  7. unsigned char Second =59;
  8. unsigned char Minute=4;
  9. unsigned char         Count=0;
  10. void main()
  11. {
  12. EA=1;
  13. ET0=1;
  14. PT0=1;
  15. TMOD=0x01;

  17. TL0=(65536-50000)%256;
  18. TH0=(65536-50000)/256;
  19. TR0=1;



  23. for(;;)
  24. {
  25.   Seg_Display_Second(Second,2);
  26.   Seg_Display_Minute(Minute,2);
  27. }
  28. }
  29. void DelayTime10ms(unsigned int DelayValue)
  30. {
  31. unsigned int a,b;
  32. for(a=0;a<DelayValue;a++)
  33. for(b=0;b<1828;b++);
  34. }
  35. void Seg_Display_Second(unsigned char DisData,unsigned char Seg_Number)
  36. {
  37. unsigned char i=0;
  38. for(i=0;i<Seg_Number;i++)
  39. {
  40. P2=Seg_CA_Position[i];
  41. P0=Seg_CA_Data[DisData%10];
  42. DisData=DisData/10;
  43. DelayTime10ms(1);
  44. }
  45. }
  46. void Seg_Display_Minute(unsigned char DisData,unsigned char Seg_Number)
  47. {
  48. unsigned char i=0;
  49. P2=Seg_CA_Position[2];
  50. P0=0xbf;
  51. DelayTime10ms(1);
  52. for(i=3;i<Seg_Number+3;i++)
  53. {
  54. P2=Seg_CA_Position[i];
  55. P0=Seg_CA_Data[DisData%10];
  56. DisData=DisData/10;
  57. DelayTime10ms(1);
  58. }
  59. }
  60. void Irq_Timer_0() interrupt 1
  61. {
  62. TL0=(65536-50000)%256;
  63. TH0=(65536-50000)/256;
  64. Count++;
  65. if(Count==20)
  66.    {
  67.         Count=0;
  68.         if(Second--==0)
  69.         {
  70.          Second=59;
  71.          if(Minute--==0)
  72.          {
  73.          Second=59;
  74.          Minute=4;
  75.          }
  76.         }
  77.         }
  78. }
复制代码

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数码管5min倒计时（定时器中断）.rar (33.86 KB, 下载次数: 16)


作者: sjwjwj    时间: 2019-6-10 22:05
程序可以用但是小白表示看不懂



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