testIC0

#define _2OUT 2
#define _2A 4
#define _2B 3
#define _1OUT 5
#define _1A 7
#define _1B 6

#define OR2A 10
#define OR2B 9
#define OR2OUT 8

void setup()
{
  pinMode(_2A, OUTPUT);
  pinMode(_2B, OUTPUT );
  pinMode(_2OUT, INPUT );
  pinMode( OR2OUT, INPUT );
  pinMode( OR2A, OUTPUT );
  pinMode( OR2B, OUTPUT );

  Serial.begin( 115200 );
}

void print( int a, int b, int c, int d ) {
  digitalWrite( _2A, a );
  digitalWrite( _2B, b );
  digitalWrite( _1A, c );
  digitalWrite( _1B, d );
  digitalWrite( OR2A, digitalRead( _2OUT ) );
  digitalWrite( OR2B, digitalRead( _1OUT ) );

  Serial.print( a );
  Serial.print( b );
  Serial.print( c );
  Serial.print( d );
  Serial.print( " => " );
  Serial.print( digitalRead( _2OUT ) );
  Serial.println( digitalRead( _1OUT ) );
  Serial.print( "OR: " );
  Serial.println( digitalRead( OR2OUT ) );
}

void logic( int* var  ) {
    *var = !(*var);
    /*
     * int* var;
     * var = 0; => var mutasson a 0-s címre
     * var = NULL;
     * *var = 0 => var által tárolt címen helyezzen el 0-t
     ** var-nak előtte értéket kell kapnia (nem lehet 0)
     */
}

int a = 0, b = 0, c = 0, d = 0;

void loop()
{
  logic( &a );
  print( a, b, c, d );
  delay( 1000 );

  logic( &b );
  print( a, b, c, d );
  delay( 1000 );


  logic( &c );
  print( a, b, c, d );
  delay( 1000 );


  logic( &d );
  print( a, b, c, d );
  delay( 1000 );
}