#include <Keypad.h>
uint8_t colpin [4]={9,8,7,6};
uint8_t rowpin [4]={5,4,3,2};

#define Led_Verde 12
#define Led_Vermelho 11


char tecla [4][4] = {{'D','#','0','*'},{'C','9','8','7'},{'B','6','5','4'},{'A','3','2','1'}};
Keypad kp (makeKeymap(tecla),rowpin,colpin,4,4);
char senha[3] = "";
int cont=0;
void setup() {
 Serial.begin(9600);
 pinMode(Led_Verde,OUTPUT);
 pinMode(Led_Vermelho,OUTPUT);
 


}

void loop() {
  char key= kp.getKey();
  if(key != NO_KEY){
    senha[cont]=key;
    Serial.println(senha);
    cont++;
  }
  if(senha[0]=='1' && senha[1]=='2' && senha[2]=='3'){
    digitalWrite(12,HIGH);
    digitalWrite(11,LOW);
  
  } else{
    digitalWrite(11,HIGH);
  }
  
}