树莓派显示字母板

sudo apt-get install git-core

sudo apt-get update

sudo apt-get upgrade

git clone git://git.drogon.net/wiringPi

cd wiringPi

git pull origin

cd wiringPi

./build

#include <wiringPi.h>

#include <stdio.h>

#include <stdlib.h>

int led_digit[10][8]={0x00,0x00,0x3E,0x41,0x41,0x3E,0x00,0x00,//0

0x00,0x00,0x21,0x7F,0x01,0x00,0x00,0x00,//1

0x00,0x00,0x23,0x45,0x49,0x31,0x00,0x00,//2

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

0x00,0x00,0x0E,0x32,0x7F,0x02,0x00,0x00,//4

0x00,0x00,0x79,0x49,0x49,0x46,0x00,0x00,//5

0x00,0x00,0x3E,0x49,0x49,0x26,0x00,0x00,//6

0x00,0x00,0x60,0x47,0x48,0x70,0x00,0x00,//7

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

0x00,0x00,0x32,0x49,0x49,0x3E,0x00,0x00//9

}; 

int row[8]={7,6,5,4,3,2,1,0}; //abc

int lin[8]={8,9,10,11,12,13,14,15}; //123

void shownum(int num){

for(int j=0;j<8;j++){

for(int k=0;k<8;k++)

digitalWrite(lin[k],HIGH);

digitalWrite(lin[j],LOW);

        for(int i=0;i<8;i++){

                if((led_digit[num][j]>>i)&1){

                        digitalWrite(row[i],HIGH);

                //      printf ("%d-----%d\n",low,i);

                }

                else

                        digitalWrite(row[i],LOW);

        delay(0);

}

}

}

int main (void)

{

int number=0 ;

int flag=1;

printf ("Raspberry Pi  program\n") ;

if (wiringPiSetup () == -1)

exit (1) ;

for(int i=0;i<8;i++){

pinMode (row[i], OUTPUT);

pinMode (lin[i], OUTPUT);

}

/*for(int i=0;i<8;i++){

digitalWrite(lin[i],LOW);

for(int j=0;j<8;j++){

digitalWrite(row[j],HIGH);

printf("%d,%d\n" , i,j);

delay(100);

digitalWrite(row[j],LOW);

}

digitalWrite(lin[i],HIGH);

}

*/

 for(;;){

for(int i=0;i<100;i++)

shownum(number%10);

number++;

}

return 0 ;

}

gcc -o 8x8led 8x8led.cpp -lwiringPi