Program to realize the left and right movement of LED dot matrix-EEWORLD

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#include

#define uchar unsigned char

unsigned char code tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; //define scan column

unsigned char code digittab[]={

0x00,0x00,0x00,0x00,0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00, //0

0x00,0x00,0x00,0x00,0x21,0x7f,0x01,0x00, //1

0x00,0x00,0x27,0x45,0x45,0x45,0x39,0x00, //2

0x00,0x00,0x22,0x49,0x49,0x49,0x36,0x00, //3

0x00,0x00,0x0c,0x14,0x24,0x7f,0x04,0x00, //4

0x00,0x00,0x72,0x51,0x51,0x51,0x4e,0x00, //5

0x00,0x00,0x3e,0x49,0x49,0x49,0x26,0x00, //6

0x00,0x00,0x40,0x40,0x40,0x4f,0x70,0x00, //7

0x00,0x00,0x36,0x49,0x49,0x49,0x36,0x00, //8

0x00,0x00,0x32,0x49,0x49,0x49,0x3e,0x00, //9

0x00,0x00,0x7F,0x48,0x48,0x30,0x00,0x00, //P

0x00,0x00,0x7F,0x48,0x4C,0x73,0x00,0x00, //R

0x00,0x00,0x7F,0x49,0x49,0x49,0x00,0x00, //E

0x00,0x00,0x3E,0x41,0x41,0x62,0x00,0x00, //C

0x00,0x00,0x7F,0x08,0x08,0x7F,0x00,0x00, //H

0x00,0x00,0x00,0xFF,0xFF,0x00,0x00,0x00, //I

0x00,0x7F,0x10,0x08,0x04,0x7F,0x00,0x00, //N

0x7C,0x48,0x48,0xFF,0x48,0x48,0x7C,0x00, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 //Medium

}; //Characters to be displayed

void delay(int t)

{

int i;

for(i=1;i<=t;i++);

}//Delay function

void main(void)

{

int a,b,c;

while(1)

{

for(a=0;a<144;a++) //All columns to be displayed

{

for(b=0;b<50;b++)//control movement speed

{

P2=0xfe; ///The rightmost column is displayed first, and the program definition moves to the left

for(c=0;c<8;c++) // A slight modification can turn it into moving right

{ //In this example, P2 is connected to the anode of the LED matrix, and P0 is connected to the cathode

P0=digittab[a+c]; //Display 8 columns at the same time

delay(100);

P0=0x00; //When scanning column change is prohibited, other columns are lit!

P2=P2<<1|P2>>7;

}

Note: This program can be slightly modified to become a program for moving the LED 8-segment digital tube left and right.

Reference address：Program to realize the left and right movement of LED dot matrix

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