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51單片機LCD1602字符液晶滾動C程序源碼和proteus仿真
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作者:
coolfire
時間:
2021-4-21 22:59
標題:
51單片機LCD1602字符液晶滾動C程序源碼和proteus仿真
1602字符液晶滾動C源程序和仿真文件.zip
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一、電路設計此電路由AT89C51最小系統、LCD1602顯示模塊和獨立按鍵組成。
可實現文字的上下左右滾動
二、運行效果
仿真原理圖如下(proteus仿真工程文件和完整單片機C語言源碼可到本帖附件中下載)
1.png
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2.png
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三、部分單片機代碼
/*************** ******************/
#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--K4 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()
{
uint Count = 0;
IE = 0x81;
IT0 = 1;
……………………
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