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C51 COMPILER V8.05a TEXT1 05/18/2009 14:43:44 PAGE 1
C51 COMPILER V8.05a, COMPILATION OF MODULE TEXT1
OBJECT MODULE PLACED IN Text1.OBJ
COMPILER INVOKED BY: C:\Keil\C51\BIN\C51.EXE Text1.c BROWSE DEBUG OBJECTEXTEND
line level source
1 #include <reg51.h>
2 #include <absacc.h>
3 #include <stdio.h>
4 #define LCD_EN_PORT PORTC
5 #define LCD_RW_PORT PORTC
6 #define LCD_RS_PORT PORTC
7 #define LCD_DATA_PORT PORTA
8 #define LCD_DATA_DDR DDRA
9 #define LCD_DATA_PIN PINA
10
11 //LCD的 r/w 脚直接接 GND
12 #define LCD_EN 0x80 //portd7 out
13 #define LCD_RS 0x40 //portc6 out
14 #define LCD_DATA 0xF0 //porta 4/5/6/7 out
15
16 /*--------------------------------------------------------------------------------------------------
17 Public function prototypes
18 --------------------------------------------------------------------------------------------------*/
19 void LCD_init (void);
20 void LCD_en_write (void);
21 void LCD_write_char (unsigned command,unsigned ddata);
22 void LCD_set_xy (unsigned char x, unsigned char y);
23 void LCD_write_string (unsigned char X,unsigned char Y,unsigned char *s);
24 void delay_nus (unsigned int n);
25 void delay_nms (unsigned int n);
26
27
28 void LCD_init(void) //液晶初始化
29 {
30 1 delay_nms(15);
31 1 DDRA |= LCD_DATA; // 数据为输出
*** ERROR C202 IN LINE 31 OF TEXT1.C: 'DDRA': undefined identifier
32 1 DDRC |= LCD_RS | LCD_EN; //置位RS.EN
*** ERROR C202 IN LINE 32 OF TEXT1.C: 'DDRC': undefined identifier
33 1
34 1 LCD_write_char(0x28,0); //4位显示
35 1 LCD_write_char(0x0c,0); //显示开
36 1 LCD_write_char(0x01,0); //清屏
37 1
38 1 delay_nms(60);
39 1 }
40
41 void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s)
42 {
43 1 LCD_set_xy( X, Y ); //写地址
44 1
45 1 while (*s) {
46 2 LCD_write_char( 0, *s );
47 2 s ++;
48 2 }
49 1 }
50
51 void LCD_set_xy( unsigned char x, unsigned char y ) //写地址函数
52 {
53 1 unsigned char address;
C51 COMPILER V8.05a TEXT1 05/18/2009 14:43:44 PAGE 2
54 1
55 1 if (y == 0)
56 1 address = 0x80 + x;
57 1 else
58 1 address = 0xc0 + x;
59 1
60 1 LCD_write_char(address, 0 );
61 1 }
62
63 void LCD_en_write(void) //液晶使能
64 {
65 1 LCD_EN_PORT |= LCD_EN;
*** ERROR C202 IN LINE 65 OF TEXT1.C: 'PORTC': undefined identifier
66 1 delay_nus(1);
67 1 LCD_EN_PORT &= ~LCD_EN;
*** ERROR C202 IN LINE 67 OF TEXT1.C: 'PORTC': undefined identifier
68 1 }
69 void LCD_write_char(unsigned command,unsigned ddata)// 写数据
70 {
71 1 unsigned command_temp,data_temp;
72 1
73 1 command_temp = command;
74 1 data_temp = ddata;
75 1 delay_nus(16);
76 1
77 1 if(command == 0) {
78 2 LCD_RS_PORT |= LCD_RS; //RS=1
*** ERROR C202 IN LINE 78 OF TEXT1.C: 'PORTC': undefined identifier
79 2 LCD_DATA_PORT &= 0X0f;
*** ERROR C202 IN LINE 79 OF TEXT1.C: 'PORTA': undefined identifier
80 2 LCD_DATA_PORT |= data_temp & 0xf0; //写高四位
*** ERROR C202 IN LINE 80 OF TEXT1.C: 'PORTA': undefined identifier
81 2
82 2 LCD_en_write();
83 2
84 2 data_temp = data_temp << 4;
85 2 LCD_DATA_PORT &= 0X0f;
*** ERROR C202 IN LINE 85 OF TEXT1.C: 'PORTA': undefined identifier
86 2 LCD_DATA_PORT |= data_temp & 0xF0; //写低四位
*** ERROR C202 IN LINE 86 OF TEXT1.C: 'PORTA': undefined identifier
87 2
88 2 LCD_en_write();
89 2 }
90 1 else {
91 2 LCD_RS_PORT &= ~LCD_RS; //RS=0
*** ERROR C202 IN LINE 91 OF TEXT1.C: 'PORTC': undefined identifier
92 2 LCD_DATA_PORT &= 0X0f;
*** ERROR C202 IN LINE 92 OF TEXT1.C: 'PORTA': undefined identifier
93 2 LCD_DATA_PORT |= command_temp & 0xF0; //写高四位
*** ERROR C202 IN LINE 93 OF TEXT1.C: 'PORTA': undefined identifier
94 2
95 2 LCD_en_write();
96 2
97 2 command_temp = command_temp << 4;
98 2 LCD_DATA_PORT &= 0x0F;
*** ERROR C202 IN LINE 98 OF TEXT1.C: 'PORTA': undefined identifier
99 2 LCD_DATA_PORT |= command_temp & 0xF0; //写低四位
*** ERROR C202 IN LINE 99 OF TEXT1.C: 'PORTA': undefined identifier
100 2
101 2 LCD_en_write();
102 2 }
103 1 }
C51 COMPILER V8.05a TEXT1 05/18/2009 14:43:44 PAGE 3
104
105
106
107 int main(void)
108 {
109 1
110 1 LCD_init();
111 1
112 1 LCD_write_string(0,0,"Hello,AVR WORLD!!!");
113 1 LCD_write_string(0,1,"hitro@tom.com");
114 1
115 1 while(1);
116 1
117 1 }
118 /*-----------------------------------------------------------------------
119 延时函数
120 系统时钟：8M
121 -----------------------------------------------------------------------*/
122 void delay_1us(void) //1us延时函数
123 {
124 1 asm("nop");
125 1 }
126
127 void delay_nus(unsigned int n) //N us延时函数
128 {
129 1 unsigned int i=0;
130 1 for (i=0;i<n;i++)
131 1 delay_1us();
132 1 }
133
134 void delay_1ms(void) //1ms延时函数
135 {
136 1 unsigned int i;
137 1 for (i=0;i<1356;i++);
138 1 }
139
140 void delay_nms(unsigned int n) //N ms延时函数
141 {
142 1 unsigned int i=0;
143 1 for (i=0;i<n;i++)
144 1 delay_1ms();
145 1 }
C51 COMPILATION COMPLETE. 0 WARNING(S), 14 ERROR(S)
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