1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
| /\*\*\*\*\*\*\*\*\*\*\*\*\*\*\* \*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*\*/
#include <reg52.h>
#include <string.h>
#define uchar unsigned char
#define uint unsigned int
void Initialize\_LCD();
void ShowString(uchar,uchar,uchar \*);
sbit K1 = P3^0;
sbit K2 = P3^1;
sbit K3 = P3^2;
uchar code Prompt[]="PRESS K1--K3 TO START DEMO PROG";
uchar const Line_Count = 6;
uchar code Msg[][80]=
{
"Many CAD users dismiss",
"process of creating PCB",
"of view.with PCB layout",
"placement and track routing,",
"can often be the most time",
"And if you use circuit simulation",
"you are going to spend even more"
};
uchar Disp_Buffer[32];
void Delayxms(uint ms)
{
uchar i;
while(ms--)
{
for(i=0;i<120;i++);
}
}
void V\_Scroll\_Display()
{
uchar i,j,k = 0;
uchar \*p = Msg[0];
uchar \*q = Msg[Line_Count] + strlen(Msg[Line_Count]);
while(p<q)
{
for(i=0;(i<16)&&(p<q);i++)
{
if(((i==0)||(i==15))&& \*p == ' ')
p++;
if(\*p != '\0')
{
Disp_Buffer[i] = \*p++;
}
else
{
if(++k>Line_Count)
break;
p = Msg[k];
Disp_Buffer[i] = \*p++;
}
}
for(j=i;j<16;j++)
Disp_Buffer[j]=' ';
while(F0)
Delayxms(5);
ShowString(0,0," ");
Delayxms(150);
while(F0)
Delayxms(5);
ShowString(0,1,Disp_Buffer);
Delayxms(150);
while(F0)
Delayxms(5);
ShowString(0,0,Disp_Buffer);
ShowString(0,1," ");
Delayxms(150);
}
ShowString(0,0," ");
ShowString(0,1," ");
}
void H\_Scroll\_Display()
{
uchar m,n,t = 0,L=0;
uchar \*p = Msg[0];
uchar \*q = Msg[Line_Count] + strlen(Msg[Line_Count]);
for(m=0;m<16;m++)
Disp_Buffer[m]=' ';
while(p<q)
{
if((m=16||m==31)&& \*p == ' ')
p++;
for(m=16;m<32&&p<q;m++)
{
if(\*p != '\0')
{
Disp_Buffer[m] = \*p++;
}
else
{
if(++t>Line_Count)
break;
p = Msg[t];
Disp_Buffer[m] = \*p++;
}
}
for(n=m;n<32;n++)
Disp_Buffer[n]=' ';
for(m=0;m<=16;m++)
{
while(F0)
Delayxms(5);
ShowString(0,L,Disp_Buffer+1);
while(F0)
Delayxms(5);
Delayxms(20);
}
L = (L==0)? 1:0;
Delayxms(200);
}
if(L==1)
ShowString(0,1," ");
}
void EX\_INT0() interrupt 0
{
F0 = !F0;
}
void main()`在这里插入代码片`
{
uint Count = 0;
IE = 0x81;
IT0 = 1;
F0 = 0;
Initialize\_LCD();
ShowString(0,0,Prompt);
ShowString(0,1,Prompt+16);
while(1)
{
if(K1 == 0)
{
V\_Scroll\_Display();
Delayxms(200);
}
else if(K2 == 0)
{
H\_Scroll\_Display();
Delayxms(200);
}
}
}
|
