#include <avr_layout.h>

class Keyboard{
public:
  Keyboard(){};
  ~Keyboard(){};

  inline void init(){
    this->avr = (LAYOUT * ) IO_MEMORY_OFFSET; 
  }; 

	inline void led_on(short value){
		int i;
		this->avr->ddrB = SET;
		this->avr->portB = value;
		for(i=0;i<0xffff;i++);
	};

	inline void led_off(){
		int i;
		this->avr->ddrB = SET;
		this->avr->portB = SET;
		for(i=0;i<0xffff;i++);
	};

	inline void debug(){
		led_on(UNSET);
		led_off();
	};

	inline void listen(){
		short read=0;
		while ( ! (this->avr->inD) );
		read = this->avr->inD;
		led_on(read);
	};


private:
  LAYOUT *avr;

};

///////////////////////////////////
///////////////////////////////////

int main(){
  int i;
  Keyboard keyboard;			
  keyboard.init();
	keyboard.debug();
  while(true){
		keyboard.listen();
  }
							
};