/**
 *
 *  NUMERIC.cpp
 *  Jan Dvorak z Vozerovic - dvorkaman@centrum.cz - dvorkaman.php5.cz
 */   
 
#ifndef numeric_cpp
#define numeric_cpp

#include "WProgram.h"
#include "numeric.h"
#include "numdigits.h"

/**************************************
/**
 * Constructor
 * Common Anode (+) 
 * @param int[8] used pins: A->G DP
 */
Numeric::Numeric(int pins[])
{
  for( int i=0; i<8; i++ )
      usedPins[i]=pins[i];
  
  init();
}

/**************************************
/**
 * Inicialize pins as OUTPUT
 * PRIVATE 
 */
inline void Numeric::init()
{
  for( int i=0; i<8; i++ )
  {
     pinMode( usedPins[i],OUTPUT );
     digitalWrite( usedPins[i], HIGH );
  }
}

/**************************************
/**
 * Show number
 * @param int number to be shown: 0 -> 15 (0-9 A-F) 
 */
 void Numeric::showNumber(int number)
 {
   char l;
   if(number<10) l=number+'0';
     else if(number<16) l=number-10+'A';
       else l=-1;
   show( l );
 }
 
/**************************************
/**
 * Shows letter and dot
 * @param char letter to be shown with dot next to it: A -> Z; 0 -> 9; _ ; - 
 */
 void Numeric::showLetterAndDot(char letter)
 {
   show(letter);
   digitalWrite(usedPins[7],LOW);
 }

/**************************************
/**
 * Shows letter
 * @param char letter to be shown: A -> Z; 0 -> 9; . ; _ ; -  
 */
void Numeric::show(char letter)
{
  int l=led7null;

  //letter selection
  switch( letter )
  {
    case '0': l=led70;break;
    case '1': l=led71;break;
    case '2': l=led72;break;
    case '3': l=led73;break;
    case '4': l=led74;break;
    case '5': l=led75;break;
    case '6': l=led76;break;
    case '7': l=led77;break;
    case '8': l=led78;break;
    case '9': l=led79;break;
    
    case 'A': case 'a': l=led7A;break;
    case 'B': case 'b': l=led7B;break;
    case 'C': case 'c': l=led7C;break;
    case 'D': case 'd': l=led7D;break;
    case 'E': case 'e': l=led7E;break;
    case 'F': case 'f': l=led7F;break;    
    
    case '.': l=led7P; break;
    case '_': l=led7_; break;
    case '-': l=led7M; break;
        
  }  
  
  showOwnLetter(l);  
}

/**************************************
/**
 * Shows own letter
 * @param int 8bit number, whose bits (A = MSB, DP = LSB) represents state of each diods: 1 = ON, 0 = OFF 
 */
void Numeric::showOwnLetter(int letter)
{
  int l=letter;  
  //setting of pins - binary shift left - masking last bit ->... 
  for( int i=7; i>=0; i-- )
  {    
    digitalWrite( usedPins[i], 1- (l & 1) ); //active groung
    l = l >> 1;
  }
}

#endif