#pragma GCC optimize ("Og")
#include "ArduinoTrace.h"

//volatile byte da=7,db=7,n=5,va;        //prueba 1
//volatile byte da=8,db=7,n=2,va;        //prueba 2
//volatile byte da=8,db=7,n=1,va;        //prueba 3
volatile byte da=3,db=9,n=5,va;        //prueba 4


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  Serial.println("INICIO");

  //------------- Proceso en alto nivel -------------------
  // if(da<db)
  // {
  //   va=db-da;
  // }
  // else
  // { 
  //   while(n>1)
  //   {
  //     va=va+db;
  //     n=n-1;
  //   }
  // }

  asm( 
    "lds r20, n \n"
    "lds r21, da \n"
    "lds r22, db \n"
    "ldi r23, 0 \n" //va
    "ldi r24, 1 \n"
    //if(da<db)
    "cp r21, r22 \n"
    "brlo TRUE \n"

    //ELSE
    //while(n>1)
    "L10: \n"
    "cpi r20, 2 \n"
    "brlo END \n"
    "add r23, r22 \n" //va = va + db
    "sub r20, r24 \n" //n = n-1
    "sts va,r23 \n"
    "rjmp L10 \n"

    //if TRUE
    "TRUE: sub r22,r21 \n" // va = db-da
    "sts va, r22 \n"
    "END: \n"
    ::: "r20","r21","r22","r23","r24"
  );
  //------------------------------------------------------

  DUMP(va);
}
void loop() {

}