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

byte count;
byte led0=3;  // led0 conectado al pin digital 3 del Arduino
byte led1=7;  // led1 conectado al pin digital 7 del Arduino
byte led2=12; // led2 conectado al pin digital 12 del Arduino
byte led3=19; // led3 conectado al pin digital 19 del Arduino

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

  // pinMode(led0, OUTPUT), pinMode(led1, OUTPUT);
  DDRD=DDRD|(1<<PD3)|(1<<PD7);  
  
  // pinMode(led2, OUTPUT)
  DDRB=DDRB|(1<<PB4);     

  //pinMode(led3, OUTPUT);  
  DDRC=DDRC|(1<<PC5);

  //DUMP(PORTB,BIN);
  Serial.println(PORTB,BIN);
  //----------------------------------------------
}

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

  //TODO: ----------------------------------------

  //digitalWrite(led0,bitRead(count,0));
  if(bitRead(count,0)==1)
  {
    PORTD=PORTD|(1<<PD3);   // bit 3 de PORTD en 1 <=> led0 ON
  }
  else
  {
    PORTD=PORTD&~(1<<PD3);  // bit 3 de PORTD en 0 <=> led0 OFF
  }

  //digitalWrite(led1,bitRead(count,1));
  if(bitRead(count,1)==1)
  {
    PORTD=PORTD|(1<<PD7);   //bit 7 de PORTD en 1 <=> led1 ON
  }
  else
  {
    PORTD=PORTD&~(1<<PD7);  //bit 7 de PORTD en 0 <=> led1 OFF
  }

  //digitalWrite(led2,bitRead(count,2));
  if(bitRead(count,2)==1)
  {
    PORTB=PORTB|(1<<PB4);   //bit 4 de PORTB en 1 <=> led2 ON
  }
  else
  {
    PORTB=PORTB&~(1<<PB4);  //bit 4 de PORTB en 0 <=> led2 OFF
  }
  //digitalWrite(led3,bitRead(count,3));
  if(bitRead(count,3)==1)
  {
    PORTC=PORTC|(1<<PC5);   //bit 5 de PORTC en 1 <=> led3 ON
  }
  else
  {
    PORTC=PORTC&~(1<<PC5);  //bit 5 de PORTC en 0 <=> led0 OFF
  }
  //----------------------------------------------

  DUMP(count);

  if(count<15)
  {
    count++;
  }
  else
  {
    count=0;
  }
  delay(1000);
}