?? lcd.lst
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C51 COMPILER V8.02 LCD 02/26/2008 11:39:05 PAGE 1
C51 COMPILER V8.02, COMPILATION OF MODULE LCD
OBJECT MODULE PLACED IN LCD.OBJ
COMPILER INVOKED BY: d:\Keil\C51\BIN\C51.EXE LCD.C BROWSE DEBUG OBJECTEXTEND
line level source
1 #include <reg51.h>
2 #include <intrins.h>
3 sbit dc=0xa0; /*P2.0 LCD的RS 21*/
4 sbit rw=0xa1; /*P2.1 LCD的R/W 22*/
5 sbit cs=0xa4; /*P2.4 LCD的E 25*/
6 sfr lcdbus=0x80; /*p0 LCD數據 D0=P0.0*/
7 unsigned int sys10mscounter;
8 unsigned char syslimitcounter;
9 char path1[8]={0x00,0x1f,0x00,0x1f,0x00,0x1f,0x00,0x1f};/*自定義符號：橫1*/
10 char path2[8]={0x1f,0x00,0x1f,0x00,0x1f,0x00,0x1f,0x00};/*自定義符號：橫2*/
11 char pats1[8]={0x15,0x15,0x15,0x15,0x15,0x15,0x15,0x15};/*自定義符號：豎1*/
12 char pats2[8]={0x0a,0x0a,0x0a,0x0a,0x0a,0x0a,0x0a,0x0a};/*自定義符號：豎2*/
13 void soft_nop(){}
14 void soft_10ms()/***********12MHZ提供10MS軟件延時************/
15 { register int i;
16 1 for(i=0;i<711;i++);
17 1 }
18 void soft_20ms()/***********12MHZ提供20MS軟件延時************/
19 { soft_10ms();
20 1 soft_10ms();
21 1 }
22 void hard_10ms(unsigned int delaytime) /*基于10MS的硬件延時*/
23 { sys10mscounter=delaytime;
24 1 while(sys10mscounter);
25 1 }
26 unsigned char data lcdcounter;
27 bit lcdusing1,lcdusing2;
28 bit lcd_checkbusy()/*檢查LCD忙*/
29 { register lcdstate;
30 1 dc=0; /*dc=1為數據,=0為命令.*/
31 1 rw=1; /*rw=1為讀,=0為寫.*/
32 1 cs=1; /*cs=1選通.*/
33 1 soft_nop();
34 1 lcdstate=lcdbus;
35 1 cs=0;
36 1 return((bit)(lcdstate&0x80));
37 1 }
38 void lcd_wrcmd(unsigned char lcdcmd) /*寫LCD命令*/
39 { lcdusing1=1;
40 1 while(lcd_checkbusy());
41 1 lcdbus=lcdcmd;
42 1 dc=0; /*dc=1為數據,=0為命令.*/
43 1 rw=0; /*rw=1為讀,=0為寫.*/
44 1 cs=1; /*cs=1選通.*/
45 1 soft_nop();
46 1 cs=0;
47 1 lcdbus=0xff;
48 1 lcdusing1=0;
49 1 }
50 void lcd_moveto(char position) /*移動光標到指定位.0-79*/
51 { register cmd=0x80;
52 1 lcdcounter=position;
53 1 if (position > 59)
54 1 position += 0x18;
55 1 else
C51 COMPILER V8.02 LCD 02/26/2008 11:39:05 PAGE 2
56 1 { if (position > 39)position -= 0x14;
57 2 else
58 2 { if (position > 19)position += 0x2c;
59 3 }
60 2 }
61 1 cmd=cmd|position;
62 1 lcd_wrcmd(cmd);
63 1 }
64 void lcd_wrdata(char lcddata) /*在當前顯示位置顯示數據*/
65 { char i;
66 1 lcdusing2=1;
67 1 while(lcd_checkbusy());
68 1 if(lcdcounter==8){
69 2 // lcd_moveto(20);
70 2 lcd_wrcmd(0x80);
71 2 while(lcd_checkbusy());
72 2 }
73 1 // if(lcdcounter==40){
74 1 // lcd_moveto(40);
75 1 // while(lcd_checkbusy());
76 1 // }
77 1 // if(lcdcounter==60){
78 1 // lcd_moveto(60);
79 1 // while(lcd_checkbusy());
80 1 // }
81 1 if(lcdcounter==16){
82 2 // lcd_moveto(0);
83 2 lcd_wrcmd(0xC0);
84 2 while(lcd_checkbusy());
85 2 lcdcounter=0;
86 2 } /*為通用而如此*/
87 1 lcdcounter++;
88 1 lcdbus=lcddata;
89 1 dc=1; /*dc=1為數據,=0為命令.*/
90 1 rw=0; /*rw=1為讀,=0為寫.*/
91 1 cs=1; /*cs=1選通.*/
92 1 soft_nop();
93 1 cs=0;
94 1 lcdbus=0xff;
95 1 lcdusing2=0;
96 1 }
*** WARNING C280 IN LINE 65 OF LCD.C: 'i': unreferenced local variable
97 void lcd_string(char *strpoint) /*在當前顯示位置顯示LCD字符串*/
98 { register i=0;
99 1 while(strpoint[i]!=0){
100 2 lcd_wrdata(strpoint[i]);
101 2 i++;
102 2 }
103 1 }
104 void lcd_init()/*初始化*/
105 { lcd_wrcmd(0x38); /*設置8位格式,2行,5*7*/
106 1 lcd_wrcmd(0x0c); /*整體顯示,關光標,不閃爍*/
107 1 lcd_wrcmd(0x06); /*設定輸入方式,增量不移位*/
108 1 lcd_wrcmd(0x01); /*清除顯示*/
109 1 lcdcounter=0;
110 1 }
111 void lcd_cls()/*清除顯示*/
112 { lcd_wrcmd(0x01);
113 1 lcdcounter=0;
114 1 }
115 void timer0(void) interrupt 1 /*T0中斷*/
116 { TH0=0xd8; /*12M,10ms*/
C51 COMPILER V8.02 LCD 02/26/2008 11:39:05 PAGE 3
117 1 TL0=0xf6;
118 1 TR0=1;
119 1 if(sys10mscounter!=0)sys10mscounter--; /*定時器10ms*/
120 1 if(syslimitcounter!=0)syslimitcounter--; /*定時器10ms*/
121 1 }
122
123 void lcd_wr(char a )
124 {
125 1 unsigned char j;
126 1 //IE=0;P0=0xff;P1=0xff;P2=0xff;P3=0xff; /*初始化T*/
127 1 //lcd_init();soft_20ms();
128 1 //TMOD=0x51;
129 1 //TH0=0xd8; /*12M,10ms*/
130 1 //TL0=0xf6;
131 1 //TR0=1;ET0=1;EA=1;
132 1 // while(1)
133 1 // {
134 1 /*全黑、橫一、橫二、豎一、豎二、U、Q、ABCD...，*/
135 1 lcd_init(); /*全黑*/
136 1 for(j=0;j<80;j++){lcd_wrdata(0xff);}
137 1 hard_10ms(50);
138 1 lcd_init(); /*橫一，可參考自行設計符號*/
139 1 lcd_wrcmd(0x40);
140 1 for(j=0;j<8;j++)lcd_wrdata(path1[j]);
141 1 for(j=0;j<100;j++)lcd_wrdata(0);
142 1 hard_10ms(50);
143 1 lcd_init(); /*橫二*/
144 1 lcd_wrcmd(0x40);
145 1 for(j=0;j<8;j++)lcd_wrdata(path2[j]);
146 1 for(j=0;j<100;j++)lcd_wrdata(0);
147 1 hard_10ms(50);
148 1 lcd_init(); /*豎一*/
149 1 lcd_wrcmd(0x40);
150 1 for(j=0;j<8;j++)lcd_wrdata(pats1[j]);
151 1 for(j=0;j<100;j++)lcd_wrdata(0);
152 1 hard_10ms(50);
153 1 lcd_init(); /*豎二*/
154 1 lcd_wrcmd(0x40);
155 1 for(j=0;j<8;j++)lcd_wrdata(pats2[j]);
156 1 for(j=0;j<100;j++)lcd_wrdata(0);
157 1 hard_10ms(50);
158 1 lcd_init();
159 1 lcd_string("123456789ABCDEFG");
160 1 hard_10ms(50);
161 1 lcd_init();
162 1 lcd_string("QQQQQQQQQQQQQQQQ");
163 1 hard_10ms(50);
164 1 lcd_init();
165 1 lcd_string("ABCDEFGHIJKLMNOP");
166 1 hard_10ms(50);
167 1 // }
168 1 }
*** WARNING C280 IN LINE 123 OF LCD.C: 'a': unreferenced local variable
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 499 ----
CONSTANT SIZE = 51 ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = 36 7
IDATA SIZE = ---- ----
C51 COMPILER V8.02 LCD 02/26/2008 11:39:05 PAGE 4
BIT SIZE = 2 ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 2 WARNING(S), 0 ERROR(S)
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