用1602模拟电子钟功能

 

实现一个简单的电子钟功能，按S1键可选择调整时、分、秒，s2上调，s3下调

未实现调整日期功能

  2
  3 /*
  4 li 8/17/2010
  5  */
  6 #include <reg52.h>
  7  #define uint unsigned int
  8 #define uchar unsigned char
  9 sbit lcden=P3^4;
 10 sbit lcdrs=P3^5;
 11 sbit dula=P2^6;
 12 sbit wela=P2^7;
 13 
 14 sbit s1=P3^0;
 15 sbit s2=P3^1;
 16 sbit s3=P3^2;
 17 sbit vss=P3^7;
 18 uchar timeNum,i,Number,keyNum; //timeNum定时器计数，i For循环计数 Number时间临时变量 keyNum显示指针位置
 19 char shi,fen,miao;
 20 uchar code date[]="2010-08-17";
 21 uchar code time[]="00:00:00";
 22 //初始化
 23 void init()
 24 {
 25     TMOD=0x01;
 26     TH0=0xEE;
 27     TL0=0x00;
 28     ET0=1;
 29     EA=1;
 30     TR0=1;
 31     dula=0;
 32     wela=0;
 33 }
 34 
 35 //定时器
 36 void timer() interrupt 1
 37 {
 38     TH0=0xEE;
 39     TL0=0x00;
 40     timeNum++;
 41 }
 42 
 43 //简单延时
 44 void delay(uchar x)
 45 {
 46     uchar i;
 47     while (x--)
 48         for (i=0;i<110;i++);
 49 }
 50 
 51 //写命令
 52 void write_com(uchar com)
 53 {
 54     lcdrs=0;
 55     P0=com;
 56     delay(1);
 57     lcden=1;
 58     lcden=0;
 59 }
 60 
 61 //写数据
 62 void write_data(uchar date)
 63 {
 64     lcdrs=1;
 65     P0=date;
 66     delay(1);
 67     lcden=1;
 68     lcden=0;
 69 }
 70 
 71 //拆分十位和各位并显示
 72 void sfm(uchar add,uchar Num)
 73 {
 74     uchar shi,ge;
 75     shi=Num/10;
 76     ge=Num%10;
 77     write_com(0x80+0x40+add);
 78     write_data(0x30+shi);
 79     write_data(0x30+ge);
 80 }
 81 
 82 //1602初始化显示
 83 void display()
 84 {
 85     write_com(0x38);
 86     write_com(0x0C);
 87     write_com(0x06);
 88     write_com(0x01);
 89     write_com(0x80);
 90     for (i=0;i<10;i++)
 91     {
 92         write_data(date[i]);
 93     }
 94     write_com(0x80+0x40);
 95     for (i=0;i<8;i++)
 96     {
 97         write_data(time[i]);
 98     }
 99 }
100 
101 //扫描键盘
102 void keysacn()
103 {
104     vss=0;
105     if (s1==0)
106     {
107         delay(5);
108         if (s1==0)
109         {
110             keyNum++;
111             while (!s1);
112             write_com(0x0F);
113             TR0=0;
114         }
115         switch (keyNum)
116         {
117         case 1:
118             write_com(0x80+0x40+7);
119             break;
120         case 2:
121             write_com(0x80+0x40+4);
122             break;
123         case 3:
124             write_com(0x80+0x40+1);
125             break;
126         case 4:
127             keyNum=0;
128             write_com(0x0C);
129             TR0=1;
130             break;
131         }
132     }
133     if(keyNum!=0)
134     {
135         if(s2==0)
136         {
137             delay(5);
138             if (s2==0)
139             {
140                 while(!s2);
141                 switch (keyNum)
142                 {
143                 case 1:
144                     miao++;
145                     if(miao==60)
146                         miao=0;
147                     sfm(6,miao);
148                     write_com(0x80+0x40+7);
149                     break;
150                 case 2:
151                     fen++;
152                     if(fen==60)
153                         fen=0;
154                     sfm(3,fen);
155                     write_com(0x80+0x40+4);
156                     break;
157                 case 3:
158                     shi++;
159                     if(shi==24)
160                         shi=0;
161                     sfm(0,shi);
162                     write_com(0x80+0x40+1);
163                     break;
164                 }
165             }
166         }
167         if(s3==0)
168         {
169             delay(5);
170             if (s3==0)
171             {
172                 while(!s3);
173                 switch (keyNum)
174                 {
175                 case 1:
176                     miao--;
177                     if(miao==-1)
178                         miao=59;
179                     sfm(6,miao);
180                     write_com(0x80+0x40+7);
181                     break;
182                 case 2:
183                     fen--;
184                     if(fen==-1)
185                         fen=59;
186                     sfm(3,fen);
187                     write_com(0x80+0x40+4);
188                     break;
189                 case 3:
190                     shi--;
191                     if(shi==-1)
192                         shi=23;
193                     sfm(0,shi);
194                     write_com(0x80+0x40+1);
195                     break;
196                 }
197             }
198         }
199     }
200 }
201 void main()
202 {
203     init();
204     display();
205     while (1)
206     {
207         if (timeNum==200)
208         {
209             timeNum=0;
210             miao++;
211             if (miao==60)
212             {
213                 miao=0;
214                 fen++;
215                 if (fen==60)
216                 {
217                     fen=0;
218                     shi++;
219                     if (shi==24)
220                     {
221                         shi=0;
222                     }sfm(0,shi);
223                 }sfm(3,fen);
224             }sfm(6,miao);
225         }
226         keysacn();
227     }
228 }