📄 ex6-4.lst
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C51 COMPILER V8.08 EX6_4 11/21/2008 00:54:13 PAGE 1
C51 COMPILER V8.08, COMPILATION OF MODULE EX6_4
OBJECT MODULE PLACED IN ex6-4.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE ex6-4.C BROWSE DEBUG OBJECTEXTEND
line level source
1 /*
2 标题：范例6-4
3 版本：1.0
4 Target：89S51
5 程序描述：智能温度感测器，这个范例中使用到
6 （1）8051 的Port 1连接到LCD显示器，PORT 3的P3.3,P3.4和P3.5分别连接到LCD显示器的控制线，程序执行时可以让LCD
-显示器显示出时间和日期。
7 （2）温度感测组件AD590经由ADC0804将感测到的温度，转换成数字数据，然后经由PORT 0输入8051。
8 （3）8051的第10和第11只脚RXD和TXD分别连线到MAX232，然后连接到PC的COM埠。
9 （4）8051实验板每 小时就读入ADC0804转换的数字温度数据，然后记录在串行式EEPROM 93C66中。
10 （5）8051实验板可以经由RS232将记录在串行EEPROM 93C66中的数字温度数据传送PC端。*/
11 /* ***************************************************** */
12 #include <REGX51.H>
13 #include <lcd.h>
14 #define XTAL 11059200
15 #define baudrate 9600
16 #define TIMES 25
17 #define TIMER0_COUNT 0xD8F0 /* 10000h-((12,000,000/(12*100)) */
18 /* 数字时钟的工作模式 */
19 #define SET 11
20 #define TRUE 1
21 #define FALSE 0
22 #define putchar write_LCD_data
23 #define adc_in P0
24 #define adc_rd P3_7
25 #define adc_wr P3_6
26 //
27 #define mode_button P2_2
28 #define operation_button P2_0
29 #define up_button 1
30 #define down_button 1
31 #define heat P2_3
32 #define cool P2_1
33 //
34 typedef struct {
35 char hour;
36 char minute;
37 char second;
38 } time;
39 typedef struct {
40 char year;
41 char month;
42 char day;
43 } date;
44 time now={23,59,0},display;
45 date today={04,12,15},tmpday;
46 static unsigned timer0_tick=100,mode=0,operation;
47 char code dayofmonth[]={31,28,31,30,31,30,31,31,30,31,30,31};
48 char code weekday[7][4]={"MON","TUE","WED","THU","FRI","SAT","SUN"};
49 char code int2char[10]="0123456789";
50 unsigned char txOK,c,set_time;
51 int ii;
52 int AT93C66_add,send_count;
53 int heatfast=1;
54 int t,t1,tt,tt1;
C51 COMPILER V8.08 EX6_4 11/21/2008 00:54:13 PAGE 2
55 int min,max;
56 // 0 表示不记录在 AT93C66, 1 表示要记录在 AT93C66中
57 unsigned char temp_wr;
58 /*
59 AT93C66的读写程序
60 */
61 unsigned char read_byte(int);
62 void write_byte(int,unsigned char);
63 void delay(void)
64 {
65 1 unsigned char i,j;
66 1 for(i=0;i<125;i++)
67 1 for(j=0;j<255;j++)
68 1 ;
69 1 }
70 void display_tempreture(unsigned char number)
71 {
72 1 unsigned char x,y;
73 1 y=number-130;
74 1
75 1 SBUF=number; // 传送数据
76 1
77 1 //***************************
78 1 if(y>=min&&y<=max)
79 1 {
80 2 heat=1;
81 2 cool=1;
82 2 }
83 1 else if(y<min)
84 1 {
85 2 if(heatfast==1){ heat=0;cool=1; P2=0X9F; } //慢加热
86 2 else if(heatfast==2) {heat=1;cool=0; P2=0XDF; } //快加热
87 2 }
88 1 else if(y>max) { cool=0;heat=0; } //制冷
89 1 //**********************************************
90 1 x=y/10;
91 1 gotoxy(1,9);
92 1 write_LCD_data(int2char[x]);
93 1 x=y%10;
94 1 write_LCD_data(int2char[x]);
95 1 if( temp_wr==1) {
96 2 write_byte(AT93C66_add,y);
97 2 if(AT93C66_add > 255) {
98 3 write_byte(0,1);
99 3 x=AT93C66_add -256;
100 3 write_byte(1,x);
101 3 } else write_byte(1,(unsigned char)AT93C66_add);
102 2 temp_wr=0;
103 2 AT93C66_add++;
104 2 }
105 1 }
106 void display_time(void)
107 {
108 1 gotoxy(1,0);
109 1 display_LCD_number(display.hour);
110 1 display_LCD_string(":");
111 1 display_LCD_number(display.minute);
112 1 display_LCD_string(":");
113 1 display_LCD_number(display.second);
114 1 }
115 void display_date()
116 {
C51 COMPILER V8.08 EX6_4 11/21/2008 00:54:13 PAGE 3
117 1 char i,days=4;
118 1 gotoxy(2,2);
119 1 display_LCD_number(tmpday.year);
120 1 display_LCD_string("/");
121 1 display_LCD_number(tmpday.month);
122 1 display_LCD_string("/");
123 1 display_LCD_number(tmpday.day);
124 1 display_LCD_string(" ");
125 1 if(tmpday.month > 1)
126 1 for(i=0;i<=tmpday.month-2;i++)
127 1 days+=(dayofmonth[i]%7);
128 1 if( tmpday.year !=0 ) days+=((tmpday.year-1)/4)
129 1 +tmpday.year+1;
130 1 if (tmpday.year%4==0 && tmpday.month >2) days++;
131 1 days=(days+tmpday.day) % 7;
132 1 display_LCD_string(&weekday[days][0]);
133 1 }
134 char monthday(char year,char month)
135 {
136 1 if(month==2 && year%4==0) //润年的2月有29天
137 1 return(29);
138 1 else
139 1 return(dayofmonth[month-1]); //非闰年时的该月份天数
140 1 }
141 static void timer0_isr(void) interrupt TF0_VECTOR using 1
142 {
143 1 TR0=0;
144 1 TL0=(TIMER0_COUNT & 0x00FF);
145 1 TH0=(TIMER0_COUNT >> 8);
146 1 TR0=1;
147 1 if(mode==1) return;
148 1 if(--timer0_tick) return;
149 1 /****************************************
150 1 if (timer0_tick==times) {
151 1 i++;
152 1 if(i==4) i=0;
153 1 timer0_tick=0;
154 1 if (status==FORWARD) heat=forward[i];
155 1 }
156 1 ***************************/
157 1 timer0_tick=100;
158 1 adc_wr=0;
159 1 now.second++; //秒加1
160 1 if(timer0_tick%2==0)
161 1 {
162 2 adc_wr=1;
163 2 temp_wr=1; }
164 1 if (now.second==60) { //如果秒等于60
165 2 now.second=0;
166 2 //秒恢复为0
167 2 now.minute++;
168 2
169 2 //分加1
170 2 if (now.minute==60) { //如果分等于60
171 3 now.minute=0; //分恢复为0
172 3 now.hour++; //时加1
173 3 if (now.hour==24) { //如果时等于24
174 4 now.hour=0; //时恢复为0
175 4 today.day++; //日加1
176 4 if (today.day>monthday(today.year,today
177 4 .month)) {
178 5 today.day=1; //如果日超过当月最大日数,就变成1
C51 COMPILER V8.08 EX6_4 11/21/2008 00:54:13 PAGE 4
179 5 today.month++; //月加1
180 5 if(today.month==13) { //如果月等于13
181 6 today.month=1; //月恢复为1
182 6 today.year++; //年加1
183 6 }
184 5 }
185 4 tmpday=today;
186 4 display_date();
187 4 }
188 3 }
189 2 }
190 1 display=now;
191 1 display_time();
192 1 }
193 static void timer0_initialize(void)
194 {
195 1 EA=0;
196 1 TR0=0;
197 1 TMOD &= 0XF0;
198 1 TMOD |=0x01;
199 1 TL0=(TIMER0_COUNT & 0x00FF);
200 1 TH0=(TIMER0_COUNT >> 8);
201 1 PT0=0;
202 1 ET0=1;
203 1 TR0=1;
204 1 EA=1;
205 1 }
206 static void int0_isr(void) interrupt 0 using 0
207 {
208 1 unsigned char voltage;
209 1 adc_in=0xFF;
210 1 adc_rd=0;
211 1 voltage=adc_in;
212 1 adc_rd=1;
213 1 display_tempreture(voltage);
214 1 }
215 static void com_isr(void) interrupt SIO_VECTOR using 1
216 {
217 1 if(TI) {
218 2 TI=0;
219 2 /* if (send_count < AT93C66_add) {
220 2 SBUF=read_byte(send_count)+32; // 传送数据
221 2 send_count++;
222 2 } */
223 2 }
224 1 }
225 void com_initialize(void) {
226 1 PCON |= 0x80;
227 1 TMOD=0x20;
228 1 TH1=(unsigned char) (256-(XTAL/(16L*12L*baudrate)));
229 1 TR1=(unsigned char) (256-(XTAL/(16L*12L*baudrate)));
230 1 SCON=0x50;
231 1 ES=1;
232 1 TR1=1;
233 1 }
234 char gotkey() {
235 1 if (mode_button==0) {
236 2 delay();
237 2 if (mode_button==0) return(0);
238 2 }
239 1 if (operation_button==0) {
240 2 delay();
C51 COMPILER V8.08 EX6_4 11/21/2008 00:54:13 PAGE 5
241 2 if (operation_button==0) return(1);
242 2 }
243 1 if (up_button==0) {
244 2 delay();
245 2 if (up_button==0) return(2);
246 2 }
247 1 if (down_button==0) {
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