|
|
C51 COMPILER V9.56.0.0 LCD 04/06/2022 22:23:01 PAGE 1 |
|
|
|
|
|
|
|
|
C51 COMPILER V9.56.0.0, COMPILATION OF MODULE LCD |
|
|
OBJECT MODULE PLACED IN lcd.OBJ |
|
|
COMPILER INVOKED BY: D:\Keil_v5\C51\BIN\C51.EXE lcd.c OPTIMIZE(8,SPEED) BROWSE DEBUG OBJECTEXTEND TABS(2) |
|
|
|
|
|
line level source |
|
|
|
|
|
1 #include "lcd.h" |
|
|
2 |
|
|
3 |
|
|
4 void Read_Busy() //忙检测函数，判断bit7是0，允许执行；1禁止 |
|
|
5 { |
|
|
6 1 unsigned char sta; // |
|
|
7 1 LCD1602_DB = 0xff; |
|
|
8 1 LCD1602_RS = 0; |
|
|
9 1 LCD1602_RW = 1; |
|
|
10 1 do |
|
|
11 1 { |
|
|
12 2 LCD1602_EN = 1; |
|
|
13 2 sta = LCD1602_DB; |
|
|
14 2 LCD1602_EN = 0; //使能，用完就拉低，释放总线 |
|
|
15 2 }while(sta & 0x80); |
|
|
16 1 } |
|
|
17 |
|
|
18 void Lcd1602_Write_Cmd(unsigned char cmd) //写命令 |
|
|
19 { |
|
|
20 1 Read_Busy(); |
|
|
21 1 LCD1602_RS = 0; |
|
|
22 1 LCD1602_RW = 0; |
|
|
23 1 LCD1602_DB = cmd; |
|
|
24 1 LCD1602_EN = 1; |
|
|
25 1 LCD1602_EN = 0; |
|
|
26 1 } |
|
|
27 |
|
|
28 void Lcd1602_Write_Data(unsigned char dat) //写数据 |
|
|
29 { |
|
|
30 1 Read_Busy(); |
|
|
31 1 LCD1602_RS = 1; |
|
|
32 1 LCD1602_RW = 0; |
|
|
33 1 LCD1602_DB = dat; |
|
|
34 1 LCD1602_EN = 1; |
|
|
35 1 LCD1602_EN = 0; |
|
|
36 1 } |
|
|
37 |
|
|
38 void LcdSetCursor(unsigned char x,unsigned char y) //坐标显示 |
|
|
39 { |
|
|
40 1 unsigned char addr; |
|
|
41 1 if(y == 0) |
|
|
42 1 addr = 0x00 + x; |
|
|
43 1 else |
|
|
44 1 addr = 0x40 + x; |
|
|
45 1 |
|
|
46 1 Lcd1602_Write_Cmd(addr|0x80); |
|
|
47 1 } |
|
|
48 |
|
|
49 //按指定位置显示一个字符 |
|
|
50 void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData) |
|
|
51 { |
|
|
52 1 Y &= 0x1; |
|
|
53 1 X &= 0xF; //限制X不能大于15，Y不能大于1 |
|
|
54 1 if (Y) X |= 0x40; //当要显示第二行时地址码+0x40; |
|
|
55 1 X |= 0x80; //算出指令码 |
|
|
C51 COMPILER V9.56.0.0 LCD 04/06/2022 22:23:01 PAGE 2 |
|
|
|
|
|
56 1 Lcd1602_Write_Cmd(X); //发命令字 |
|
|
57 1 Lcd1602_Write_Data(DData); //发数据 |
|
|
58 1 } |
|
|
59 |
|
|
60 |
|
|
61 void LcdShowStr(unsigned char x,unsigned char y,unsigned char *str) //显示字符串 |
|
|
62 { |
|
|
63 1 LcdSetCursor(x,y); //当前字符的坐标 |
|
|
64 1 while(*str != '\0') |
|
|
65 1 { |
|
|
66 2 Lcd1602_Write_Data(*str++); |
|
|
67 2 } |
|
|
68 1 } |
|
|
69 |
|
|
70 void InitLcd1602() //1602初始化 |
|
|
71 { |
|
|
72 1 Lcd1602_Write_Cmd(0x38); //打开，5*8,8位数据 |
|
|
73 1 Lcd1602_Write_Cmd(0x0c); |
|
|
74 1 Lcd1602_Write_Cmd(0x06); |
|
|
75 1 Lcd1602_Write_Cmd(0x01); //清屏 |
|
|
76 1 } |
|
|
|
|
|
|
|
|
MODULE INFORMATION: STATIC OVERLAYABLE |
|
|
CODE SIZE = 157 ---- |
|
|
CONSTANT SIZE = ---- ---- |
|
|
XDATA SIZE = ---- ---- |
|
|
PDATA SIZE = ---- ---- |
|
|
DATA SIZE = ---- 3 |
|
|
IDATA SIZE = ---- ---- |
|
|
BIT SIZE = ---- ---- |
|
|
END OF MODULE INFORMATION. |
|
|
|
|
|
|
|
|
C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)
|
|
|
|
