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原理不说了，利用LED开关的占空比调节亮度，人眼视觉暂留，扫描够快看不到LED闪烁。七彩根据实验配色不同亮度
电路很简单，一个单片机，3个NMOS管，还有LED灯带，红 绿 黄三种颜色。电路图在最后。
实测，效果还行，外部中断1接电摩刹车线，一刹车就闪烁。
强调一点：河北欢迎您！！嘿嘿！！ ------少占鱼
/***********************************************/
/*************电摩LED灯带控制，三基色5050LED灯带********/
#include "reg52.h"
/*************三个NMOS增强型，对地开关控制灯带RGB三根线********/
/***********************************************/
#define uchar unsigned char
#define uint unsigned int
/***********************************************/
sbit RedLed=P3^5;
sbit GreenLed=P3^7;
sbit BlueLed=P3^4;
/***********************************************/
uint RedLedDuty; //最大10000
uint GreenLedDuty; //最大10ms
uint BlueLedDuty; //最大10ms
uint T0InterCnt; //定时器中断计数
uint T0flag;
bit ShaCheFlag;
uint ShaCheCnt;
/***********************************************/
void LiuShuiDeng();
void DanSeJianAn();
void DanSeJianLiang();
void ShanShuo(uint R,uint G,uint B,uint DelayTime,uint Count);
void LiangDuPeiZhi(uint R,uint G,uint B);
void LedInit();
void delayms(uint k);
void delays(uint k);
/***********************************************/
void main()
{
ShaCheCnt=0;
ShaCheFlag=0;
delayms(1000);
T0InterCnt=0;
RedLed=1;
GreenLed=1;
BlueLed=1;
delays(3);
T0InterCnt=0;
RedLed=0;
GreenLed=0;
BlueLed=0;
delays(3);
LedInit();
while(1)
{
//外部中断里用了闪烁函数，函数里有延时函数，测试发现，会出现外部中断几次后，程序卡死。加入初始化后解决。
LedInit(); //一个整循环完毕后，下次循环之前最好重新初始化一下，防止某些地方关闭中断后，不再开启，陷入死循环
if(ShaCheCnt<3)
LiuShuiDeng();
if(ShaCheCnt<3)
DanSeJianAn();
if(ShaCheCnt<3)
ShanShuo(1,0,0,100,30);
if(ShaCheCnt<3)
ShanShuo(0,1,0,100,30);
if(ShaCheCnt<3)
ShanShuo(0,0,1,100,30);
if(ShaCheCnt<3)
DanSeJianLiang();
if(ShaCheCnt<3)
{
RedLed=1;
GreenLed=1;
BlueLed=1;
delays(3);
}
if(ShaCheCnt<3)
ShanShuo(1,1,1,100,50);
delays(2);
}
}
/***********************************************/
void LedInit()
{
EA=0; //关闭EA
T0flag=0;
T0InterCnt=0;
TMOD=0x02;//T0方式2
TH0=100%256;
TL0=100%256;
EX1=1;
IT1=0; //外部中断边沿触发
ET0=1; //开T0中断
TR0=1;
EA=1;
}
/***********************************************/
// 外部按键中断 1
void ExInt1() interrupt 2 using 2 //外部中断1
{
TR0=0; //关闭定时器，出了外部中断再继续计数。防止某些卡死现象
EA=0;
ShaCheFlag=!ShaCheFlag;
ShaCheCnt++;
if(ShaCheCnt>6)
ShaCheCnt=0;
if(ShaCheCnt==1)
ShanShuo(0,0,1,100,6);
if(ShaCheCnt==2)
ShanShuo(1,0,1,100,6);
if(ShaCheCnt==3)
ShanShuo(0,1,1,100,6);
if(ShaCheCnt==4)
ShanShuo(1,0,0,100,6);
if(ShaCheCnt==5)
ShanShuo(1,1,0,100,6);
TR0=1;
EA=1;
}
/***********************************************/
void time0() interrupt 1 using 2//定时器0中断
{
T0InterCnt++;
if(T0InterCnt*100>=RedLedDuty)
{
RedLed=0;
}
if(T0InterCnt*100>=GreenLedDuty)
{
GreenLed=0;
}
if(T0InterCnt*100>=BlueLedDuty)
{
BlueLed=0;
}
if(T0InterCnt*100>10001)
{
T0InterCnt=0;
T0flag=1;
EA=0;
TR0=0;
TF0=0;
}
}
/**************七彩流水灯***********************/
void LiuShuiDeng()
{
uint WaitCnt;
T0InterCnt=0;
RedLed=0;
GreenLed=0;
BlueLed=0;
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(10000,0,0); //红
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(10000,1000,0); //橙
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(10000,3000,0); //黄
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(0,10000,0); //绿
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(0,10000,5000); //青
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(0,0,10000); //蓝
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(10000,0,10000); //紫
while(!T0flag);
}
}
/***************单色渐暗***************************/
void DanSeJianAn()
{
uint DecTime,WaitTime,j;
T0InterCnt=0;
RedLed=0;
GreenLed=0;
BlueLed=0;
delays(2);
DecTime=10000;
WaitTime=100;
while(WaitTime)
{
for(j=0;j<15;j++)
{
LiangDuPeiZhi(DecTime,0,0); //红
while(!T0flag);
T0flag=0;
}
DecTime-=100;
WaitTime--;
}
delays(2);
DecTime=10000;
WaitTime=100;
while(WaitTime)
{
for(j=0;j<15;j++)
{
LiangDuPeiZhi(0,DecTime,0); //绿
while(!T0flag);
T0flag=0;
}
DecTime-=100;
WaitTime--;
}
delays(2);
DecTime=10000;
WaitTime=100;
while(WaitTime)
{
for(j=0;j<15;j++)
{
LiangDuPeiZhi(0,0,DecTime); //蓝
while(!T0flag);
T0flag=0;
}
DecTime-=100;
WaitTime--;
}
}
/**************单色渐亮*****************************/
void DanSeJianLiang()
{
uint AddTime,WaitTime,j;
T0InterCnt=0;
RedLed=0;
GreenLed=0;
BlueLed=0;
AddTime=0;
WaitTime=100;
while(WaitTime)
{
for(j=0;j<15;j++)
{
LiangDuPeiZhi(AddTime,0,0); //红
while(!T0flag);
T0flag=0;
}
AddTime+=100;
WaitTime--;
}
delays(2);
AddTime=0;
WaitTime=100;
while(WaitTime)
{
for(j=0;j<15;j++)
{
LiangDuPeiZhi(0,AddTime,0); //绿
while(!T0flag);
T0flag=0;
}
AddTime+=100;
WaitTime--;
}
delays(2);
AddTime=0;
WaitTime=100;
while(WaitTime)
{
for(j=0;j<15;j++)
{
LiangDuPeiZhi(0,0,AddTime); //蓝
while(!T0flag);
T0flag=0;
}
AddTime+=100;
WaitTime--;
}
}
/***************单灯闪烁*****************************/
void ShanShuo(uint R,uint G,uint B,uint DelayTime,uint Count)
{
T0InterCnt=0;
RedLed=R;
GreenLed=G;
BlueLed=B;
while(Count--)
{
RedLed=R;
GreenLed=G;
BlueLed=B;
delayms(DelayTime);
if(R)
{
RedLed=!RedLed; //红
}
if(G)
{
GreenLed=!GreenLed; //绿
}
if(B)
{
BlueLed=!BlueLed; //蓝
}
delayms(DelayTime);
}
}
/***********************************************/
void LiangDuPeiZhi(uint R,uint G,uint B)
{
EA=0; //关闭EA
RedLed=0;
GreenLed=0;
BlueLed=0;
T0InterCnt=0;
RedLedDuty=R;//
if(RedLedDuty<1)
{
RedLed=0;
}
else
RedLed=1;
GreenLedDuty=G;
if(GreenLedDuty<1)
{
GreenLed=0;
}
else
GreenLed=1;
BlueLedDuty=B;
if(BlueLedDuty<1)
{
BlueLed=0;
}
else
BlueLed=1;
T0flag=0;
T0InterCnt=0;
TR0=1;
EA=1;
}
/*************************************************/
//延时函数
void delayms(uint k)
{
uint data i,j;
for(i=0;i<k;i++)
{
for(j=0;j<730;j++)
{;}
}
}
/***********************************************/
void delays(uint k)
{
uint data i,j,m;
for(m=0;m<k;m++)
{
for(i=0;i<1000;i++)
{
for(j=0;j<800;j++)
{;}
}
}
}
/***********************************************/
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