#pragma GCC optimize "-Og"
#include "ArduinoTrace.h"

volatile byte a,b=5;


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  byte i=0;
  while(i<10)
  {
    //a=a+2;  //pasar a assembly
    asm volatile
    (
      "ldi %1,2 \n"
      "add %0,%1 \n"  //r24 <-- a+2   
      :"+r"(a)  
      : "d"(a)
      :
    );
    // asm volatile
    // (
    //   "lds r24,a \n"
    //   "ldi r16,2 \n"
    //   "add r24,r16 \n"  //r24 <-- a+2
    //   "sts a,r24"     
    //   :
    //   :
    //   :"r24","r16"
    // );

    i++;
  }
  DUMP(a);
}

void loop() {
  // put your main code here, to run repeatedly:

}