📄 1602.lst
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C51 COMPILER V6.12 1602 05/09/2007 20:05:04 PAGE 1
C51 COMPILER V6.12, COMPILATION OF MODULE 1602
OBJECT MODULE PLACED IN .\1602.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE .\1602.c BROWSE DEBUG OBJECTEXTEND
stmt level source
1 #include <at89x51.h>
2 #define uchar unsigned char
3 #define uint unsigned int
4 #define busy 0x80
5 sbit RS=P3^7;
6 sbit RW=P3^6;
7 sbit E=P3^5;
8 sfr lcd_data=0xa0;
9 void cls(void);
10 void uart_init();
11 void send_string(uchar *str);
12 void send_byte(uchar da);
13 void initlcd();
14 void write_data(uchar x);
15 void write_instruction(uchar x);
16 void write_string(uchar x,uchar *p);
17 void delay(uint i);
18 uchar code string_to_pc[]="字符型LCD1602和传口测试程序，请输入单个字母或数字发给我！";
19 uchar code sring_to_lcd[]="LCM 1602,I LOVE";
20
21 void main()
22 {
23 1 uart_init();//初始化传口
24 1 send_string(string_to_pc);//发送字符串
25 1 send_byte(0x0d);//计算机换行
26 1 send_byte(0x0a);
27 1 initlcd();
28 1 write_string(0x80,sring_to_lcd);
29 1 while(1);
30 1 }
31 /************************************初始化串口******************************/
32 void uart_init()
33 {
34 1 TMOD=0x20;
35 1 TH1=0XFD;
36 1 TL1=0XFD;
37 1 PCON=0X00;
38 1 TR1=1;
39 1 SCON=0X50;
40 1 IE=0x90;
41 1
42 1 }
43 /************************************发送一串字符*****************************/
44 void send_string(uchar *str)
45 {
46 1 uchar i;
47 1 i=0;
48 1 while(*(str+i)!='\0')
49 1 {
50 2 send_byte(*(str+i));
51 2 i++;
52 2 }
53 1 }
54 /************************************发送单个字符******************************/
55 void send_byte(uchar da)
C51 COMPILER V6.12 1602 05/09/2007 20:05:04 PAGE 2
56 {
57 1
58 1 EA=0;
59 1 SBUF=da;
60 1 while(!TI)
61 1 TI=0;
62 1 EA=1;
63 1 }
64
65 /************************************初始化LCD******************************/
66 void initlcd()
67 {
68 1 write_instruction(0x01);
69 1 delay(20);
70 1 write_instruction(0x38);
71 1 delay(20);
72 1 write_instruction(0x0f);
73 1 delay(20);
74 1 write_instruction(0x06);
75 1 delay(20);
76 1
77 1 }
78 /************************************写命令******************************/
79 void write_instruction(uchar x)
80 {
81 1 delay(1000);
82 1 E=0;
83 1 RW=0;
84 1 RS=0;
85 1 lcd_data=x;
86 1 E=1;
87 1 delay(20);
88 1 E=0;
89 1
90 1
91 1 }
92
93
94
95 /*void check_busy(void)
96 {
97 lcd=0xff;
98 E=0;
99 RW=1;
100 RS=0;
101 E=1;
102 delay(100);
103 while(lcd&busy);
104 E=0;
105
106 }
107 */
108 /************************************延时子程序*****************************/
109 void delay(uint i)
110 {
111 1 while(i--);
112 1
113 1 }
114
115 /************************************写数据到LCD中******************************/
116
117 void write_data(uchar x)
C51 COMPILER V6.12 1602 05/09/2007 20:05:04 PAGE 3
118 {
119 1 delay(1000);
120 1 E=0;
121 1 RW=0;
122 1 RS=1;
123 1 E=1;
124 1 lcd_data=x;
125 1 E=0;
126 1 }
127
128 /************************************LCD清屏******************************/
129 void cls(void)
130 {
131 1 write_instruction(0x01);
132 1 }
133 /************************************写字符串******************************/
134 void write_string(uchar x,uchar *p)
135 {
136 1 write_instruction(x);
137 1 while(*p!=0x00)
138 1 {
139 2 write_data(*p);
140 2 p++;
141 2 x++;
142 2 if(x==0x8f)
143 2 {
144 3 write_instruction(0xc0);
145 3 }
146 2 }
147 1 }
148
149 /************************************串口中断******************************/
150 uart()interrupt 4
151 {
152 1 uchar temp;
153 1 uchar count;
154 1 EA=0;
155 1 if(RI)
156 1 {
157 2 RI=0;
158 2 temp=SBUF;
159 2 if(count==0)
160 2 {
161 3 cls();
162 3 send_byte(0x0d);//计算机换行
163 3 send_byte(0x0a);
164 3
165 3 }
166 2 write_data(temp);//写数据到LCD
167 2
168 2 send_byte(temp);//发送回电脑
169 2 count++;
170 2 if(count==0x10)//满一屏
171 2 {
172 3 write_instruction(0xc0);//LCD地址切换到第而行
173 3 send_byte(0x0d);//换行
174 3 send_byte(0x0a);
175 3 }
176 2 if(count==0x20)
177 2 {
178 3 count=0;
179 3 }
C51 COMPILER V6.12 1602 05/09/2007 20:05:04 PAGE 4
180 2 }
181 1 EA=1;
182 1
183 1 }
184
185
186
187
188
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 378 ----
CONSTANT SIZE = 73 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- 11
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
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