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原理不說了，利用LED開關的占空比調節亮度，人眼視覺暫留，掃描夠快看不到LED閃爍。七彩根據實驗配色不同亮度
電路很簡單，一個單片機，3個NMOS管，還有LED燈帶，紅 綠 黃三種顏色。電路圖在最后。
實測，效果還行，外部中斷1接電摩剎車線，一剎車就閃爍。
強調一點：河北歡迎您！！嘿嘿！！ ------少占魚
/***********************************************/
/*************電摩LED燈帶控制，三基色5050LED燈帶********/
#include "reg52.h"
/*************三個NMOS增強型，對地開關控制燈帶RGB三根線********/
/***********************************************/
#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; //定時器中斷計數
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)
{
//外部中斷里用了閃爍函數，函數里有延時函數，測試發現，會出現外部中斷幾次后，程序卡死。加入初始化后解決。
LedInit(); //一個整循環完畢后，下次循環之前最好重新初始化一下，防止某些地方關閉中斷后，不再開啟，陷入死循環
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; //關閉EA
T0flag=0;
T0InterCnt=0;
TMOD=0x02;//T0方式2
TH0=100%256;
TL0=100%256;
EX1=1;
IT1=0; //外部中斷邊沿觸發
ET0=1; //開T0中斷
TR0=1;
EA=1;
}
/***********************************************/
// 外部按鍵中斷 1
void ExInt1() interrupt 2 using 2 //外部中斷1
{
TR0=0; //關閉定時器，出了外部中斷再繼續計數。防止某些卡死現象
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//定時器0中斷
{
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;
}
}
/**************七彩流水燈***********************/
void LiuShuiDeng()
{
uint WaitCnt;
T0InterCnt=0;
RedLed=0;
GreenLed=0;
BlueLed=0;
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(10000,0,0); //紅
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(10000,1000,0); //橙
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(10000,3000,0); //黃
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(0,10000,0); //綠
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(0,10000,5000); //青
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(0,0,10000); //藍
while(!T0flag);
}
WaitCnt=200;
while(WaitCnt--)
{
LiangDuPeiZhi(10000,0,10000); //紫
while(!T0flag);
}
}
/***************單色漸暗***************************/
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); //紅
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); //綠
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); //藍
while(!T0flag);
T0flag=0;
}
DecTime-=100;
WaitTime--;
}
}
/**************單色漸亮*****************************/
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); //紅
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); //綠
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); //藍
while(!T0flag);
T0flag=0;
}
AddTime+=100;
WaitTime--;
}
}
/***************單燈閃爍*****************************/
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; //紅
}
if(G)
{
GreenLed=!GreenLed; //綠
}
if(B)
{
BlueLed=!BlueLed; //藍
}
delayms(DelayTime);
}
}
/***********************************************/
void LiangDuPeiZhi(uint R,uint G,uint B)
{
EA=0; //關閉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;
}
/*************************************************/
//延時函數
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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