📄 lcd_clock.lst
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C51 COMPILER V7.20 LCD_CLOCK 02/27/2008 10:00:01 PAGE 1
C51 COMPILER V7.20, COMPILATION OF MODULE LCD_CLOCK
OBJECT MODULE PLACED IN lcd_clock.OBJ
COMPILER INVOKED BY: E:\Keil C\C51\BIN\C51.EXE lcd_clock.c BROWSE DEBUG OBJECTEXTEND
line level source
1 #include<reg51.h>
2 #include<intrins.h>
3 #define u8 unsigned char
4 #define u16 unsigned int
5 typedef struct {
6 char hour;
7 char minute;
8 char second;
9 }time;
10 typedef struct {
11 int year;
12 char month;
13 char day;
14 }date;
15 date today={2008,02,25};
16 time now={23,59,00};
17 u8 code dayofmonth[]={31,28,31,30,31,30,31,31,30,31,30,31};
18
19
20
21 u8 flag;
22 char secondlow,secondhigh,minutelow,minutehigh,hourlow,hourhigh,daylow,dayhigh,monthlow,monthhigh,
23 yearlow,yearsecondlow,yearthirdlow,yearhigh;
24 u16 tick;
25 sbit rs=P3^5;
26 sbit rw=P3^6;
27 sbit en=P3^7;
28 sbit mode=P3^0;
29 sbit up=P3^1;
30 sbit down=P3^2;
31 #define lcdcommand 0
32 #define lcddate 1
33
34 char monthofday(char month,int year)//返回月的天数
35 {
36 1 if(month==2&&year%4==0)
37 1 {
38 2 return(29);
39 2 }
40 1 else
41 1 {
42 2 return(dayofmonth[month]);
43 2 }
44 1 }
45 void delay(u8 z)
46 {
47 1 u8 x,y;
48 1 for(x=z;x>0;x--)
49 1 for(y=110;y>0;y--);
50 1 }
51
52 void timer0()interrupt 1
53 {
54 1 TMOD=0x01;
55 1 TH0=(65536-5000)/256;
C51 COMPILER V7.20 LCD_CLOCK 02/27/2008 10:00:01 PAGE 2
56 1 TL0=(65536-5000)%256;
57 1 TR0=1;
58 1 EA=1;
59 1 tick++;
60 1 if(tick==200)
61 1 {
62 2 tick=0;
63 2 now.second++;
64 2 if(now.second==60)
65 2 {
66 3 now.second=0;
67 3 now.minute++;
68 3 if(now.minute==60)
69 3 {
70 4 now.minute=0;
71 4 now.hour++;
72 4 if(now.hour==24)
73 4 {
74 5 now.hour=0;
75 5 today.day++;
76 5 if(today.day==monthofday(today.month,today.year))
77 5 {
78 6 today.day=1;
79 6 today.month++;
80 6 if(today.month==13)
81 6 {
82 7 today.month=1;
83 7 today.year++;
84 7 if(today.year==9999)
85 7 {
86 8 today.year=1900;
87 8 }
88 7 }
89 6 }
90 5 }
91 4 }
92 3 }
93 2 }
94 1 }
95
96 void write_lcd(bit writestyle,u8 input)
97 {
98 1 rw=0;
99 1 rs=writestyle;
100 1 _nop_();
101 1 P1=input;
102 1 en=1;
103 1 delay(5);//这一句延时要足够长才行。
104 1 en=0;
105 1
106 1 }
107
108 /*void write_sfr(char second,char minute,char hour,char day,char month,int year)
109 {
110
111 }*/
112 void initialize()
113 {
114 1 write_lcd(lcdcommand,0x38);
115 1 write_lcd(lcdcommand,0x0c);
116 1 write_lcd(lcdcommand,0x06);
117 1 write_lcd(lcdcommand,0x01);
C51 COMPILER V7.20 LCD_CLOCK 02/27/2008 10:00:01 PAGE 3
118 1 write_lcd(lcdcommand,0x80);
119 1 }
120
121 void timer0_initialize()
122 {
123 1 EA=0;
124 1 TMOD=0x01;
125 1 TH0=(65536-5000)/256;
126 1 TL0=(65536-5000)%256;
127 1 ET0=1;
128 1 TR0=1;
129 1 tick=0;
130 1 EA=1;
131 1
132 1 }
133 void write_second_nocursor()
134 {
135 1 write_lcd(lcdcommand,0x80+0x40+11);
136 1 write_lcd(lcddate,secondhigh+0x30);
137 1 write_lcd(lcddate,secondlow+0x30);
138 1 }
139 void write_second()
140 {
141 1 write_lcd(lcdcommand,0x80+0x40+11);
142 1 write_lcd(lcddate,secondhigh+0x30);
143 1 write_lcd(lcdcommand,0x06);
144 1 write_lcd(lcdcommand,0x0e);
145 1 write_lcd(lcdcommand,0x0c);
146 1 write_lcd(lcddate,secondlow+0x30);
147 1 }
148 void write_minute()
149 {
150 1 write_lcd(lcdcommand,0x38);
151 1 write_lcd(lcdcommand,0x80+0x40+8);
152 1 write_lcd(lcddate,minutehigh+0x30);
153 1 write_lcd(lcdcommand,0x06);
154 1 write_lcd(lcdcommand,0x0e);
155 1 write_lcd(lcdcommand,0x0c);
156 1 write_lcd(lcddate,minutelow+0x30);
157 1 write_lcd(lcddate,0x30+10);//加上冒号
158 1 }
159 void write_hour()
160 {
161 1 write_lcd(lcdcommand,0x80+0x40+5);
162 1 write_lcd(lcddate,hourhigh+0x30);
163 1 write_lcd(lcdcommand,0x06);
164 1 write_lcd(lcdcommand,0x0e);
165 1 write_lcd(lcdcommand,0x0c);
166 1 write_lcd(lcddate,hourlow+0x30);
167 1 write_lcd(lcddate,0x30+10);//加上冒号
168 1 }
169 void write_day()
170 {
171 1 write_lcd(lcdcommand,0x80+12);
172 1 write_lcd(lcddate,dayhigh+0x30);
173 1 write_lcd(lcdcommand,0x06);
174 1 write_lcd(lcdcommand,0x0e);
175 1 write_lcd(lcdcommand,0x0c);
176 1 write_lcd(lcddate,daylow+0x30);
177 1 }
178 void write_month()
179 {
C51 COMPILER V7.20 LCD_CLOCK 02/27/2008 10:00:01 PAGE 4
180 1 write_lcd(lcdcommand,0x80+9);
181 1 write_lcd(lcddate,monthhigh+0x30);
182 1 write_lcd(lcdcommand,0x06);
183 1 write_lcd(lcdcommand,0x0e);
184 1 write_lcd(lcdcommand,0x0c);
185 1 write_lcd(lcddate,monthlow+0x30);
186 1 }
187 void write_year()
188 {
189 1 write_lcd(lcdcommand,0x80+4);
190 1 write_lcd(lcddate,yearhigh+0x30);
191 1 write_lcd(lcddate,yearthirdlow+0x30);
192 1 write_lcd(lcddate,yearsecondlow+0x30);
193 1 write_lcd(lcdcommand,0x06);
194 1 write_lcd(lcdcommand,0x0e);
195 1 write_lcd(lcdcommand,0x0c);//这三句用来在最末位显示光标
196 1 write_lcd(lcddate,yearlow+0x30);
197 1 }
198 void keyscan()
199 {
200 1 if(mode==0)
201 1 {
202 2 delay(20);
203 2 if(mode==0)
204 2 {
205 3 flag++;
206 3 if(flag==7)
207 3 {
208 4 flag=0;
209 4 }
210 3 }
211 2 while(!mode);
212 2 }
213 1 if(flag==6)
214 1 {
215 2 TR0=0;
216 2 write_lcd(lcdcommand,0x0c);
217 2 if(up==0)
218 2 {
219 3 delay(20);
220 3 if(up==0)
221 3 {
222 4 now.second++;
223 4 if(now.second==60)
224 4 {
225 5 now.second=0;
226 5 }
227 4 }
228 3 while(!up);
229 3 }
230 2 if(down==0)
231 2 {
232 3 delay(20);
233 3 if(down==0)
234 3 {
235 4 now.second--;
236 4 if(now.second==-1)
237 4 {
238 5 now.second=59;
239 5 }
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