File content as of revision 1:d8589d1f368c:

#ifndef Max7221_H
#define Max7221_H

// define max7219/max7221 registers
#define max7219_reg_noop         0x00
#define max7219_reg_digit0       0x01
#define max7219_reg_digit1       0x02
#define max7219_reg_digit2       0x03
#define max7219_reg_digit3       0x04
#define max7219_reg_digit4       0x05
#define max7219_reg_digit5       0x06
#define max7219_reg_digit6       0x07
#define max7219_reg_digit7       0x08
#define max7219_reg_decodeMode   0x09
#define max7219_reg_intensity    0x0a
#define max7219_reg_scanLimit    0x0b
#define max7219_reg_shutdown     0x0c
#define max7219_reg_displayTest  0x0f

#define LOW 0
#define HIGH 1
#define MHZ 1000000
#define NUMDIGITS 8

#ifdef NUMDIGITS 
#define UPPERBOUND 99999999
#define LOWERBOUND -9999999
#endif

class Max7221 {
public:
   Max7221(PinName msoi=p5, PinName mclk=p7, PinName load=p8);
   
   void Write( unsigned int reg, unsigned int col);
   
   void WriteInt( int value );
   void WriteFloat( float value);
   Max7221& operator= (int value){ 
        WriteInt(value); 
        return *this;
        };
   Max7221& operator= (float value){ 
        WriteFloat(value); 
        return *this; 
        };
   
   void Setup (void);
   
   static void WriteAll (unsigned int reg, unsigned int col);
   static void SetupAll (void);
   
private:
   SPI *max72_spi;
   DigitalOut *load;
   int id;
   int *maxInUse;
   
   
   static SPI *spi1;
   static SPI *spi2;
   static DigitalOut *load1;
   static DigitalOut *load2;
   static int maxInUseSPI1;
   static int maxInUseSPI2;
   
};

#endif