#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;
}
}