#ifndef Cronos_LCD20x4_h
#define Cronos_LCD20x4_h
#include "Print.h"

// commands
#define LCD_CLEARDISPLAY 0x01 
#define LCD_RETURNHOME 0x02
#define LCD_ENTRYMODESET 0x04 
#define LCD_DISPLAYCONTROL 0x08 
#define LCD_CURSORSHIFT 0x10
#define LCD_FUNCTIONSET 0x20 
#define LCD_SETCGRAMADDR 0x40
#define LCD_SETDDRAMADDR 0x80 

// flags for display entry mode
#define LCD_ENTRYRIGHT 0x00
#define LCD_ENTRYLEFT 0x02  
#define LCD_ENTRYSHIFTINCREMENT 0x01
#define LCD_ENTRYSHIFTDECREMENT 0x00 

// flags for display on/off control
#define LCD_DISPLAYON 0x04 
#define LCD_DISPLAYOFF 0x00
#define LCD_CURSORON 0x02
#define LCD_CURSOROFF 0x00 
#define LCD_BLINKON 0x01
#define LCD_BLINKOFF 0x00 

// flags for display/cursor shift
#define LCD_DISPLAYMOVE 0x08
#define LCD_CURSORMOVE 0x00
#define LCD_MOVERIGHT 0x04
#define LCD_MOVELEFT 0x00

// flags for function set
#define LCD_8BITMODE 0x10 
#define LCD_4BITMODE 0x00 
#define LCD_2LINE 0x08    
#define LCD_1LINE 0x00    
#define LCD_5x10DOTS 0x04 
#define LCD_5x8DOTS 0x00  

class Cronos_LCD20x4 : public Print {
public:
  Cronos_LCD20x4(uint8_t rs, uint8_t enable, uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3);
  void enviar(float);  // Mio
  void limpiar();

private:
  void init(uint8_t fourbitmode, uint8_t rs, uint8_t rw, uint8_t enable,
	    uint8_t d0, uint8_t d1, uint8_t d2, uint8_t d3,
	    uint8_t d4, uint8_t d5, uint8_t d6, uint8_t d7);
  void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS);  
  void display();
  void setRowOffsets(int row1, int row2, int row3, int row4);
  void createChar(uint8_t, uint8_t[]);
  void setCursor(uint8_t, uint8_t); 
  virtual size_t write(uint8_t);
  void command(uint8_t);

  void send(uint8_t, uint8_t);
  void write4bits(uint8_t);
  void write8bits(uint8_t);
  void pulseEnable();
  
  void hacer(int, int); // Mio
  void cero(int);
  void uno(int);
  void dos(int);
  void tres(int);
  void cuatro(int);
  void cinco(int);
  void seis(int);
  void siete(int);
  void ocho(int);
  void nueve(int);
  void dosPuntos(int);
  void punto(int);

  uint8_t _rs_pin; // LOW: command.  HIGH: character.
  uint8_t _rw_pin; // LOW: write to LCD.  HIGH: read from LCD.
  uint8_t _enable_pin; // activated by a HIGH pulse.
  uint8_t _data_pins[8];

  uint8_t _displayfunction;
  uint8_t _displaycontrol;
  uint8_t _displaymode;

  uint8_t _initialized;

  uint8_t _numlines;
  uint8_t _row_offsets[4];

  uint8_t A[8];
  uint8_t B[8];   
  uint8_t C[8];   
  uint8_t D[8];   
  uint8_t E[8];   
  uint8_t F[8];   
  uint8_t G[8];
  uint8_t H[8];   
  int minDigAnterior;    // Cantidad de digitos distintos a cero en minutos la vuelta anterior.   
};

#endif

//#include <Cronos_LCD20x4.h>
Cronos_LCD20x4 crono(12, 11, 5, 4, 3, 2); //(rs, en, d4, d5, d6, d7)

void setup() {
}

void loop() {
  crono.enviar(float(millis())/1000);
}