Đèn giao thông hiển thị led Matrix 8x8

Hi All,

Chia sẻ cùng các bạn Mạch đèn giao thông hiển thị led ma trận 8x8, đơn giản nhất.

Code Mã nguồn C:

#include<at89x52.h>

//tre 1ms
void delayms (unsigned int  ms)
{


while(ms--)
{
//chuong trinh tao re 1ms
TMOD=0x01;
TH0=0xFC;
TL0=0x17;
TR0=1;
while(!TF0);

TF0=0;
TR0=0;
}
}

//chuong trinh chinh
void main()
{
 int n,i,k,j;
unsigned char mahang[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};//mahang logic 0
unsigned char macot[248]={
   //ma led ma tri 8x8 2 so 1 bong   tu 00=>30

 0x7C,0x44,0x7C,0x00,0x7C,0x44,0x7C,0x00,   //00
   0x00,0x7C,0x44,0x7C,0x00,0x7C,0x00,0x00,   //01
   0x00,0x7C,0x44,0x7C,0x00,0x5C,0x54,0x74,   //02
   0x00,0x7C,0x44,0x7C,0x00,0x54,0x54,0x7C,
   0x00,0x7C,0x44,0x7C,0x00,0x70,0x10,0x7C,
   0x00,0x7C,0x44,0x7C,0x00,0x74,0x54,0x5C,
   0x00,0x7C,0x44,0x7C,0x00,0x7C,0x54,0x5C,
   0x00,0x7C,0x44,0x7C,0x00,0x40,0x40,0x7C,
   0x00,0x7C,0x44,0x7C,0x00,0x7C,0x54,0x7C,
   0x00,0x7C,0x44,0x7C,0x00,0x74,0x54,0x7C,

   0x00,0x00,0x7C,0x00,0x00,0x74,0x54,0x7C,
  0x00,0x00,0x7C,0x00,0x00,0x7C,0x00,0x00,
    0x00,0x00,0x7C,0x00,0x5C,0x54,0x74,0x00,
    0x00,0x00,0x7C,0x00,0x54,0x54,0x7C,0x00,
    0x00,0x00,0x7C,0x00,0x70,0x10,0x7C,0x00,
    0x00,0x00,0x7C,0x00,0x74,0x54,0x5C,0x00,
    0x00,0x00,0x7C,0x00,0x7C,0x54,0x5C,0x00,
    0x00,0x00,0x7C,0x00,0x40,0x40,0x7C,0x00,
   0x00,0x00,0x7C,0x00,0x7C,0x54,0x7C,0x00,
   0x00,0x00,0x7C,0x00,0x74,0x54,0x7C,0x00,

   0x5C,0x54,0x74,0x00,0x7C,0x44,0x7C,0x00,
  0x5C,0x54,0x74,0x00,0x00,0x7C,0x00,0x00,
     0x5C,0x54,0x74,0x00,0x5C,0x54,0x74,0x00,
   0x5C,0x54,0x74,0x00,0x54,0x54,0x7C,0x00,
    0x5C,0x54,0x74,0x00,0x70,0x10,0x7C,0x00,
     0x5C,0x54,0x74,0x00,0x74,0x54,0x5C,0x00,
     0x5C,0x54,0x74,0x00,0x7C,0x54,0x5C,0x00,
     0x5C,0x54,0x74,0x00,0x40,0x40,0x7C,0x00,
   0x5C,0x54,0x74,0x00,0x7C,0x54,0x7C,0x00,
   0x5C,0x54,0x74,0x00,0x74,0x54,0x7C,0x00,
   0x54,0x54,0x7C,0x0,0x7C,0x44,0x7C,0x00   //30
};//ma cot tich cuc muc 1 //khai bao trang thai ban dau cua cac den bao P0 dieu khien

 P0=0x3E; //trang thai den bao

while(1)
{
 
for(k=45;k>=0;k--)  //vong quet led truoc
  {
for(i=50;i>=0;i--) //vong quet led sau
{
for(j=0;j<20;j++)   //tao thoi gian tre hien thi nhay 100lan
{
  for(n=0;n<8;n++) //vong quet tin hieu
{
P3=mahang[n];   //quet hang
P1=macot[i*8+n]; //quet cot led sau
P2=macot[k*8+n]; //quet cot led truoc
delayms(1);   //thoigian hien thi 1 cot

//dieu khien led bao 1 chu ki dau

if(k==0&&i==6)
{ //bat den vang
P0_1=0;
P0_5=0;
//xoa het den xanh do
  P0_2=1;
  P0_4=1;
  P0_0=1;
  P0_6=1;
}

}
}
if(k==0&&i==0)
  {
  P0=0xE3; //CHO PHEp DDI THANG VA CAM RE PHAI RE PHAI DOC ,CAM DI THANG NGANG,VA CHO PHEP RE PHAI NGANG
  }
}


}
//nua chu ki sau
for(k=4;k>=0;k--)  //vong quet led truoc
  {
for(i=9;i>=0;i--) //vong quet led sau
{
for(j=0;j<20;j++)   //tao thoi gian tre hien thi nhay 60lan
{
  for(n=0;n<8;n++) //vong quet tin hieu
{
P3=mahang[n];   //quet hang
P1=macot[i*8+n]; //quet cot led sau
P2=macot[k*8+n]; //quet cot led truoc
delayms(1);   //thoigian hien thi 1 cot
//dieu khien led bao 1 chu ki
if(k==0&&i==6)
{ //bat den vang
P0_1=0;
P0_5=0;
//xoa het den xanh do
  P0_2=1;
  P0_4=1;
  P0_0=1;
  P0_6=1;
}

}
}
if(k==0&&i==0)
  {
//lat tin hieu xanh do
  P0=0x3E; //CAM DI THANG VA CHO PHEP RE PAHI DOC,CHO PHEP DI NGANG VA CAM RE PAHI NGANG
}
}


}

}
}

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