单片机51c语言程序实例（可调控的跑马灯）+Proteus仿真+源代码

可调控的跑马灯

   本例实现目标：利用51单片机控制16只LED灯按8种不同的模式滚动，模式选择由K1控制，加速按键由K2控制，减速按键由K3控制。

  本例电路图如下：

                         电路图-1

电路图-2

在Proteus中的元器件：

源代码：

 //3oò÷μíμbr>  //￡oμ￥ê′0-7o￡êD￡óoí°′μ÷LEDá÷
 
 #include<reg51.h>
 #define uchar unsigned char
 #define uint unsigned int
uchar ModeNo;  //êàobr>    uchar Speed;
   uchar tCount = 0;  
   uchar rdx;  //èμòy
   uchar mb_Count =0; //òˉêy
   bit Direct= 1; //1ˉ·ò
 
 //±í
 uchar code DSY_CODE[]={0XC0,0XF9,0XA4,0XB0,0X99,0X92,0X82,0XF8,0X80,0X90};
 
 //μ÷±í
 uint code sTable[]={0,1,3,5,7,9,15,30,50,100,200,230,280,300,350};
 
 //ê±
 void Delay(uint x)
 {
   uchar i;
while(x–)
{
  for(i=0;i<120;i++);
}
   
 }
 //2a°′
 uchar Getkey()
 {
  uchar K;
if(P2==0xFF)return 0;
Delay(10);
switch(P2)
{
case 0xFE_K=1;break;
case 0xFD_K=2;break;
case 0xFB_K=3;break;
default : K=0;
}
  while(P2!=0xFF);    //μè′yêí·′
return K;
 }

 //16LEDêbr>  void Led_Demo(uint Led16)
 {
  P1=(uchar)(Led16 & 0x00FF); //êí8
P0=(uchar)(Led16 >>8);//ê
 }
 
 //ê±2
 void T0_INT() interrupt 1
 {
if(++tCount < Speed) return;
tCount = 0;
switch (ModeNo)
{
case 0:Led_Demo(~0x0001<<mb_Count);break;
case 1:Led_Demo(~0xB000>>mb_Count);break;
case 2:if(Direct)Led_Demo(~0x000F<<mb_Count);
else Led_Demo(~0xF000>>mb_Count);
if(mb_Count==15) Direct=!Direct;
break;
case 3:if(Direct)Led_Demo(-(0x000F<<mb_Count));
else Led_Demo(-(0xF000>>mb_Count));
if(mb_Count==15)Direct=!Direct;
break;
  case 4:if(Direct)Led_Demo(0x003F<<mb_Count);
else Led_Demo(0xFC00>>mb_Count);
if(mb_Count==15) Direct=!Direct;
break;
case 5:if(Direct)Led_Demo(0x0001<<mb_Count);
else Led_Demo(0x8000>>mb_Count);
if(mb_Count==15) Direct=!Direct;
break;
case 6:if(Direct)Led_Demo(-(0x0001<<mb_Count));
else Led_Demo(-(0x8000>>mb_Count));
if(mb_Count==15) Direct=!Direct;
break;
case 7:if(Direct)Led_Demo(0xFFFE<<mb_Count);
else Led_Demo(0x7FFF>>mb_Count);
if(mb_Count==15) Direct=!Direct;
break;
}
  mb_Count=(mb_Count+1)%16;
 }
 
 //°′′|àí
 void KeyProcess(uchar Key)
 {
   switch(Key)
{
     case 1: //éèêbr> Direct=1;mb_Count=0;
ModeNo=(ModeNo+1)%8;
P3=DSY_CODE[ModeNo];
break;
case 2://
if(rdx>1)Speed=sTable[–rdx];break;
case 3://
if(rdx<15)Speed=sTable[++rdx];break;
}
 
 }
 
 //3ìDò
 void main()
 {
  uchar Key;
P0=P1=P2=P3=0xFF;
ModeNo=0;rdx=4;
Speed=sTable[rdx];
P3=DSY_CODE[ModeNo];
IE=0xB2;
TMOD=0X00;
TR0=1;
while(1)
{
  Key=Getkey();
if(Key!=0) KeyProcess(Key);
}
 }

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