簡易51單片機跑馬燈，含源碼、仿真原理圖

ID:835221 · 發表于 2020-10-27 15:59

可供初學者學習，代碼清晰易懂，八個按鈕，四個不同跑馬燈形式，四個調節頻率。
仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）

單片機源程序如下:

#include"reg51.h"
code unsigned char leddat1[]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80};
code unsigned char leddat2[]={0x01,0x80,0x02,0x40,0x04,0x20,0x08,0x10};
code unsigned char leddat3[]={0x01,0x02,0x04,0x08,0x80,0x40,0x20,0x10};
code unsigned char leddat4[50]={0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80,0x81,0x82,
0x84,0x88,0x90,0xA0,0xC0,0xC1,0xC2,0xC4,0xC8,0xD0,
0xE0,0xE1,0xE2,0xE4,0xE8,0xF0,0xF1,0xF2,0xF4,0xF8,
0xF9,0xFA,0xFC,0xFD,0xFE,0xFF,0xFF,0x00,0xFF,0x00};
void delay(unsigned int n)
{
unsigned int i=0,j=0;
for(i=0;i<n;i++)
{
for(j=0;j<120;j++);
}
}
void led1()
{
int i=0;
for(i=0;i<8;i++)
{
P2=~leddat1[i];
delay(400);
}
}
void led2()
{
int i=0;
for(i=0;i<8;i++)
{
P2=~leddat2[i];
delay(400);
}
}
void led3()
{
int i=0;
for(i=0;i<8;i++)
{
P2=~leddat3[i];
delay(400);
}
}
void led4()
{
int i=0;
for(i=0;i<50;i++)
{
P2=~leddat4[i];
delay(400);
}
}
void ledF1()
{
int i=0;
for(i=0;i<8;i++)
{
P2=~leddat1[i];
delay(100);
}
}
void ledF2()
{
int i=0;
for(i=0;i<8;i++)
{
P2=~leddat1[i];
delay(400);
}
}
void ledF3()
{
int i=0;
for(i=0;i<8;i++)
{
P2=~leddat1[i];
delay(1000);
}
}
void ledF4()
{
int i=0;
for(i=0;i<8;i++)
{
P2=~leddat1[i];
delay(2000);
}
}
void main()
{
while(1)
{
if(P1==~0x01)
{led1();}
if(P1==~0x02)
{led2();}
if(P1==~0x04)
{led3();}
if(P1==~0x08)
{led4();}
if(P1==~0x10)
{ledF1();}
if(P1==~0x20)
{ledF2();}
if(P1==~0x40)
{ledF3();}
if(P1==~0x80)
{ledF4();}
}
}

復制代碼

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