int menu = 0;
int btn1 = A0;
int btn2 = A2;

void setup() {
pinMode(btn1, INPUT);
pinMode(btn2, INPUT);
pinMode(2, OUTPUT);
pinMode(3, OUTPUT);
pinMode(4, OUTPUT);
pinMode(5, OUTPUT);
Serial.begin(9600);
}

void loop() {
  int lectura1 = digitalRead(btn1);
  int lectura2 = digitalRead(btn2);

  if(lectura1 ==0){
   
    if(menu ==5) {
      menu == 0;
   menu++;
   switch (menu) {
  case 1: Serial.println("Apagar");
  break;
  case 2: Serial.println("Subir volumen");
  break;
  case 3: Serial.println("Bajar volumen");
  break;
  case 4: Serial.println("Subir canal");
  break;
  case 5: Serial.println("Bajar canal");
  break;
   }
  
  while(!digitalRead(btn1));
}
if(lectura2 == 0) {
  if(menu == 1) {
    
    Serial.println("Apagando televisor...");
  }
   
  }
  if(lectura2 == 0) {

  if(menu == 2) {
    ;
    Serial.println("subiendo volumen...");

    if(menu == 3) {
    ;
    Serial.println("bajando volumen...");

  }
   if(menu == 4) {
  ;
    Serial.println("subiendo canal...");

  }
  if(menu == 5) {
    digitalRead(13,HIGH);
    Serial.println("bajando canal...");

}
 while(!digitalRead(btn2));
  }