MAX7219_Dot_Matrix.h

#include <Arduino.h>

class MAX7219_Dot_Matrix
  {
  // pins
  const byte chips_;
  const byte load_;
  const byte din_;
  const byte clock_;
//  const bool bitBanged_;
//  bitBangedSPI * bbSPI_;

  void sendByte (const byte reg, const byte data);
  void sendToAll (const byte reg, const byte data);

  // registers
  enum {
       MAX7219_REG_NOOP        = 0x0,
      // codes 1 to 8 are digit positions 1 to 8
       MAX7219_REG_DECODEMODE  = 0x9,
       MAX7219_REG_INTENSITY   = 0xA,
       MAX7219_REG_SCANLIMIT   = 0xB,
       MAX7219_REG_SHUTDOWN    = 0xC,
       MAX7219_REG_DISPLAYTEST = 0xF,
      }; // end of enum


  public:
    // constructor
    MAX7219_Dot_Matrix (const byte chips,
             const byte load,
             const byte din = 0,
             const byte clock = 0)
       : chips_ (chips), load_ (load), din_ (din), clock_ (clock){ }

    ~MAX7219_Dot_Matrix ();  // destructor
    void begin ();
    void end ();
    void writeReg (const byte reg, const byte data);
    void sendChar (const byte pos, const byte data);
    void send64pixels (const byte pos, const byte data [8]);
    void sendString (const char * s);
    void sendSmooth (const char * s, const int pixel);
    void setIntensity (const byte amount);  // 0 to 15

  static const byte HYPHEN = 0b0000001;

  }; // end of class MAX7219_Dot_Matrix