งานที่ 6

#include "LedConyrol.h"

#include "Keypad.h"

char keys[4][4]={

  {'7','8','9','A'},

  {'4','5','6','B'},

  {'1','2','3','C'},

  {'*','0','#','D'}};

byte rowPins[] = {7,6,5,4};

byte colPins[] = {3,2,1,0};

Keypad keypad = keypad(makeKeymap(keys),rowPins,colPins,4,4);

LedControl lc=LedControl(8,10,9,1);

int m=7;

void setup()

{

  lc.shutdown(0,false);

  lc.setIntensity(0,5);

  lc.clearDisplay(0);

}

void loop]()

{

  char key = keypad.getKey();

  if (key !=NO_KEY)

  {

    if (m==7)

    lc.clearDisplay(0);

    lc.setChar(0,m,key,false);

    m = m-1;

    if (m < 0)

       m = 7;

  }

}