Prteus秒表设计LCD实现

/*txt1.c*/

1. #include <reg52.h>
   
2. #include<intrins.h>
   
3. #define uchar unsigned char
   
4. #define uint unsigned int
   
5. #define DelayNOP(){_nop_();_nop_();_nop_();_nop_();}
   
6. uchar Time_Buffer[]={0,0,0,0};
   
7. uchar LCD_Display_Buffer[] = {"00:00:00:00"};
   
8. void LCD_Initialize();
   
9. void LCD_Set_POS(uchar);
   
10. void LCD_Write_Data(uchar);
    
11. void Display_String(uchar *,uchar);
    
12. void Beep();
    
13. sbit K1=P1^0;
    
14. sbit K2=P1^1;
    
15. sbit BEEP=P3^0;
    
16. sbit LCD_RS=P2^0;
    
17. sbit LCD_RW=P2^1;
    
18. sbit LCD_EN=P2^2;
    
19. char KeyCount=0;
    
20. uchar code msg1[]= {"Second Watch 0 "};
    
21. uchar code msg2[]= {"####       "};
    
22. uchar code Prompts[][16]=
    
23. {{"##1--> "},{"##1-->##2    "},{"##3-->    "},{"##3-->4   "}};
    
24. 
    
25. void Beep()
    
26. {
    
27. uchar i,j=70;
    
28. for(i=0;i<180;i++)
    
29. {while(--j);BEEP=~BEEP;}
    
30. BEEP=0;}
    
31. void DelayX(uint MS)
    
32. {
    
33. uchar i;
    
34. while(MS--) for(i=0;i<120;i++);}
    
35. void Show_Second()
    
36. {
    
37. uchar i;
    
38. LCD_Set_POS(0X45); //设置 LCD显示起点
    
39. for (i=3;i!=0xff;i--)
    
40. {
    
41. //将两位整数的1、100s, 秒，分，时转换为8位数字字符
    
42. LCD_Display_Buffer[2*i+1]=Time_Buffer[i]/10+'0';
    
43. LCD_Display_Buffer[2*i]=Time_Buffer[i]%10+'0';
    
44. //在i=3,2,1,0时分别显示时，分，秒，1/100s
    
45. LCD_Write_Data(LCD_Display_Buffer[2*i+1]);
    
46. LCD_Write_Data(LCD_Display_Buffer[2*i]);
    
47. LCD_Write_Data(':');
    
48. }}
    
49. //Time0中断
    
50. void Time0() interrupt 1 using 0
    
51. {
    
52. TH0=-10000/256;
    
53. TL0=-10000%256;
    
54. Time_Buffer[0]++;
    
55. if(Time_Buffer[0]==100)
    
56. {
    
57. Time_Buffer[0]=0; Time_Buffer[1]++;
    
58. }
    
59. if(Time_Buffer[1]==60)//秒
    
60. {
    
61. Time_Buffer[1]=0; Time_Buffer[2]++;
    
62. }
    
63. if(Time_Buffer[2]==60)  //分
    
64. {
    
65. Time_Buffer[2]=0; Time_Buffer[3]++;
    
66. }
    
67. if(Time_Buffer[3]==24)  //时
    
68. Time_Buffer[3]=0;
    
69. }
    
70. void main()
    
71. {
    
72. uchar i;
    
73. IE=0x82;
    
74. TMOD=0x01;
    
75. TH0=-10000/256;
    
76. TL0=-10000%256;
    
77. LCD_Initialize();
    
78. Display_String(msg1,0x00);
    
79. Display_String(msg2,0x40);
    
80. while(1)
    
81. {
    
82. if(K1==0)
    
83. {
    
84. DelayX(100);
    
85. i=++KeyCount;        
    
86. switch(i)
    
87. {
    
88. case 1:        
    
89. case 3: TR0=1;
    
90. Display_String(Prompts[i-1],0);
    
91. break;
    
92. case 2:        
    
93. case 4: TR0=0;
    
94. Display_String(Prompts[i-1],0);
    
95. break;
    
96. default:TR0=0;
    
97. break;
    
98. }
    
99. while (K1==0);
    
100. Beep();
     
101. }
     
102. else
     
103. if(K2==0)
     
104. {
     
105. TR0=0;
     
106. KeyCount=0;
     
107. for(i=0;i<4;i++)
     
108. Time_Buffer[i]=0;
     
109. Display_String(msg1,0);
     
110. Beep();
     
111. DelayX(100);
     
112. while(K2==0);
     
113. }
     
114. Show_Second();
     
115. }
     
116. }
     
117. 
     
118. /*txt2.c*/
     
119. #include <reg52.h>
     
120. #include<intrins.h>
     
121. #define uchar unsigned char
     
122. #define uint unsigned int
     
123. #define DelayNOP(){_nop_();_nop_();_nop_();_nop_();}
     
124. sbit LCD_RS=P2^0;
     
125. sbit LCD_RW=P2^1;
     
126. sbit LCD_EN=P2^2;
     
127. bit LCD_Busy_Check();
     
128. void LCD_Initialize();
     
129. void LCD_Write_Data(uchar);
     
130. void LCD_Write_Command(uchar);
     
131. 
     
132. void DelayMS(unit);
     
133. void DelayMS(uint MS)
     
134. {
     
135. uchar t;
     
136. while(MS--) for(t=0;t<120;t++);
     
137. }
     
138. bit LCD_Busy_Check()
     
139. {
     
140. bit Result;
     
141. LCD_RS=0;LCD_RW=1;LCD_EN=1;
     
142. DelayNOP();
     
143. Result=(bit)(P0&0x80);
     
144. LCD_EN=0;
     
145. return Result;
     
146. }
     
147. void LCD_Write_Command(uchar cmd)
     
148. {
     
149. while(LCD_Busy_Check());
     
150. LCD_RS=0;LCD_RW=0;LCD_EN=0;
     
151. _nop_();_nop_();
     
152. P0=cmd;DelayNOP();
     
153. LCD_EN=1;DelayNOP();
     
154. LCD_EN=0;
     
155. }
     
156. void LCD_Write_Data(uchar str)
     
157. {
     
158. while(LCD_Busy_Check());
     
159. LCD_RS=1;LCD_RW=0;LCD_EN=0;
     
160. P0=str;DelayNOP();
     
161. LCD_EN=1;DelayNOP();
     
162. LCD_EN=0;
     
163. }
     
164. void LCD_Initialize()
     
165. {
     
166. DelayMS(5);LCD_Write_Command(0x38);
     
167. DelayMS(5);LCD_Write_Command(0x0c);
     
168. DelayMS(5);LCD_Write_Command(0x06);
     
169. DelayMS(5);LCD_Write_Command(0x01);
     
170. DelayMS(5);
     
171. }
     
172. void LCD_Set_POS(uchar Position)
     
173. {
     
174. LCD_Write_Command(Position|0x80);
     
175. }
     
176. void Display_String(uchar*str,uchar LineNo)
     
177. {
     
178. uchar k;
     
179. LCD_Set_POS(LineNo);
     
180. for(k=0;k<16;k++)
     
181. LCD_Write_Data(str[k]);
     
182. }
     

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