
void setup()
{

  volatile char *dirf,*dirk;
  volatile char *outf,*outk; 

  dirf=0x30;
  dirk=0x107;
  outf=0x31;
  outk=0x108;
  
//declare first two pins of PORTF and PORTK as output ports.
  *dirf=0x03;
  *dirk=0x03;

  while(1)
  {
    *outf=0x02;
    *outk=0x02;

    delay(500);

    *outf=0x02;
    *outk=0x01;

    delay(500);

    *outf=0x01;
    *outk=0x01;

    delay(500);

    *outf=0x01;
    *outk=0x02;

    delay(500);


  }
  

}



sketch.ino

diagram.json

  volatile char *dirf = (char*)0x30;//DDRF – Port F Data Direction Register
  volatile char *dirk = (char*)0x107;//DDRK – Port K Data Direction Register
  volatile char *dira = (char*)0x21;//DDRA – Port F Data Direction Register
  volatile char *dirc = (char*)0x27;//DDRC – Port K Data Direction Register
  volatile char *dirl = (char*)0x10A;//DDRL – Port L Data Direction Register
  volatile char *outf = (char*)0x31;//PORTF – Port F Data Register
  volatile char *outk = (char*)0x108;//PORTK – Port K Data Register
  volatile char *outa = (char*)0x22;//PORTA – Port A Data Register
  volatile char *outc = (char*)0x28;//PORTC – Port C Data Register
  volatile char *outl = (char*)0x10B;//PORTL – Port L Data Register
  volatile char *ink = (char*)0x106;// PINK – Port K Input Pins Address