1602LCD设计的可调式电子钟无法显示时间

1. #include<reg51.h>
   
2. #include<intrins.h>
   
3. #define uchar unsigned char
   
4. #define uint unsigned int
   
5. #define DelayNOP(){_nop_();_nop_();_nop_();_nop_();}
   
6. sbit K1 =P1^0;
   
7. sbit K2 =P1^1;
   
8. sbit K3 =P1^2;
   
9. sbit K4 =P1^3;
   
10. sbit SPK =P3^0;
    
11. sbit LCD_RS =P2^0;
    
12. sbit LCD_RW =P2^1;
    
13. sbit LCD_EN =P2^2;
    
14. bit LCD_Busy_Check();
    
15. void LCD_Initialize();
    
16. void LCD_Set_POS(uchar);
    
17. void LCD_Write_Command(uchar);
    
18. void LCD_Write_Data(uchar);
    
19. void Display_String(uchar *,uchar);
    
20. uchar code Str1[]="  Current Time  ";
    
21. uchar code Str2[]="Set New Time...";
    
22. uchar HMS_String[]="  12:30:00  ";
    
23. bit Settime=0;
    
24. bit Change_H_or_M=1;
    
25. uchar MilliSecond, Hour=12, Minute=30, Second=0;
    
26. void DelayX(uint x)
    
27. {
    
28. uchar i;
    
29. while(x--) for(i=0;i<120;i++);
    
30. }
    
31. void Display_HMS(uchar h,m,s)
    
32. {
    
33. if (Settime) HMS_String[3]='>';
    
34. else   
    
35. HMS_String[3]=' ';
    
36. HMS_String[4]=h/10+'0';
    
37. HMS_String[5]=h%10+'0';
    
38. HMS_String[7]=m/10+'0';
    
39. HMS_String[8]=m%10+'0';
    
40. HMS_String[10]=s/10+'0';
    
41. HMS_String[11]=s%10+'0';
    
42. Display_String(HMS_String,0x40);
    
43. }
    
44. void Change_Time()
    
45. {
    
46. Settime=0;
    
47. if(K1==0||K2==0||K3==0)
    
48. {TR0=0;
    
49. Display_String(Str2,0x00);
    
50. Settime=1;
    
51. }
    
52. while(Settime)
    
53. {
    
54. if(K1==0)
    
55. {
    
56. while(K1==0);
    
57. Change_H_or_M =！Change_H_or_M;
    
58. }
    
59. else if(K2==0)
    
60. {
    
61. while(K2==0);
    
62. if(Change_H_or_M==1)
    
63. { if(++Hour==24)Hour=0;}
    
64. else
    
65. {if(++Minute==60)Minute=0;}
    
66. }
    
67. else if (K3==0)
    
68. {
    
69. while(K3==0);
    
70. if(Change_H_or_M==1)
    
71. { if(--Hour==0xff)Hour=23;}
    
72. else
    
73. {if(--Minute==0xff)Minute=59;}
    
74. }
    
75. else if(K4==0)
    
76. {
    
77. while(K4==0);
    
78. Display_String(Str1,0x00);
    
79. Settime=0;
    
80. TR0=1;
    
81. }
    
82. Display_HMS(Hour,Minute,Second);
    
83. }
    
84. }
    
85. void Time0() interrupt 1
    
86. {
    
87. TH0=(65536-50000)/256;
    
88. TL0=(65536-50000)%256;
    
89. if(++MilliSecond==20)
    
90. {
    
91.    MilliSecond=0;
    
92.    if(++Second==60)
    
93.    {
    
94.    Second=0;
    
95.         if(++Minute==60)
    
96.         {
    
97.         Minute=0;
    
98.         if(++Hour==24)
    
99.         {
    
100.         Hour=0;Minute=0;Second=0;
     
101.         }
     
102.         }
     
103.         }
     
104.         }
     
105.         }
     
106.    void main()
     
107.    {
     
108.    TMOD=0x01;
     
109.    TH0=(65536-50000)/256;
     
110.    TL0=(65536-50000)%256;
     
111.    IE=0x82;
     
112.    SPK=0;
     
113.    LCD_Initialize();
     
114.    Display_String(Str1,0x00);
     
115.    TR0=1;
     
116.    P1=0xFF;
     
117.    while(1);
     
118.    {
     
119.    Display_HMS(Hour,Minute,Second);
     
120.    DelayX(500);
     
121.    Change_Time();
     
122.    }
     
123.    }

1. //    1602LCD显示驱动函数
   
2. #include<reg51.h>
   
3. #include<intrins.h>
   
4. #define uchar unsigned char
   
5. #define uint unsigned int
   
6. #define DelayNOP( ){_nop_( ); _nop_( ); _nop_( ); _nop_( );}
   
7. sbit LCD_RS = P2^0;
   
8. sbit LCD_RW = P2^1;
   
9. sbit LCD_EN = P2^2;
   
10. bit LCD_Busy_Check( );
    
11. void LCD_Initialize( );
    
12. void LCD_Set_POS(uchar);
    
13. void LCD_Write_Command(uchar);
    
14. void LCD_Write_Date(uchar);
    
15. // 延时
    
16. void DelayMS(uint ms)
    
17. {
    
18.   uchar t;
    
19.   while(ms--) for (t =0;t < 120;t++);
    
20. }
    
21. // LCD忙检查
    
22. bit LCD_Busy_Check( )
    
23. {
    
24.         bit Result;
    
25.         LCD_RS = 0; LCD_RW = 1; LCD_EN = 1;DelayNOP( );
    
26.         Result = (bit)(P0 & 0x80);
    
27.         LCD_EN = 0;
    
28.         return Result;
    
29. }
    
30. // 向LCD写指令
    
31. void LCD_Write_Command(uchar cmd)
    
32. {
    
33.         while(LCD_Busy_Check() );
    
34.         LCD_RS = 0; LCD_RW = 0; LCD_EN = 0;
    
35.         _nop_( ); _nop_( );
    
36.         P0 = cmd;  DelayNOP( );
    
37.         LCD_EN = 1;DelayNOP( );
    
38.         LCD_EN = 0;
    
39. }
    
40. // 向LCD写数据
    
41. void LCD_Write_Date(uchar str)
    
42. {
    
43.         while(LCD_Busy_Check() );
    
44.         LCD_RS = 1; LCD_RW = 0; LCD_EN = 0;P0 = str; DelayNOP( );
    
45.         LCD_EN = 1; DelayNOP( );LCD_EN = 0;
    
46. }
    
47. // 初始化LCD
    
48. void LCD_Initialize( )
    
49. {
    
50.         DelayMS(5); LCD_Write_Command(0x38);
    
51.         DelayMS(5); LCD_Write_Command(0x0c);
    
52.         DelayMS(5); LCD_Write_Command(0x06);
    
53.         DelayMS(5); LCD_Write_Command(0x01);
    
54.         DelayMS(5);
    
55. }
    
56. // 设置显示位置
    
57. void LCD_Set_POS(uchar Position)
    
58. {
    
59.         LCD_Write_Command(Position | 0x80);
    
60. }
    
61. //显示函数，在LCD指定行上显示字符串
    
62. void Display_String(uchar *str,uchar LineNO)
    
63. {
    
64.   uchar k;
    
65.   LCD_Set_POS(LineNO);
    
66.   for (k = 0;k < 16;k++) LCD_Write_Date(str[k]);
    
67. }
    

试试自己设定一个时间来显示，看看是显示函数的问题，还是数据格式转换的问题