text: // LiquidCrystal_I2C V2.0
  // Note: The original libe file has beem modified to support the ATtiny85  1/20/11 by "BroHogan"
  // All changes can be located by searching for "__AVR_ATtiny85__". 
  
  #ifndef LiquidCrystal_I2C_h
  #define LiquidCrystal_I2C_h
  
  #include <inttypes.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
  
  // flags for backlight control
  #define LCD_BACKLIGHT 0x08
  #define LCD_NOBACKLIGHT 0x00
  
  #define En B00000100  // Enable bit
  #define Rw B00000010  // Read/Write bit
  #define Rs B00000001  // Register select bit
  
  class LiquidCrystal_I2C : public Print {
  public:
    LiquidCrystal_I2C(uint8_t lcd_Addr,uint8_t lcd_cols,uint8_t lcd_rows);
    void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS );
    void clear();
    void home();
    void noDisplay();
    void display();
    void noBlink();
    void blink();
    void noCursor();
    void cursor();
    void scrollDisplayLeft();
    void scrollDisplayRight();
    void printLeft();
    void printRight();
    void leftToRight();
    void rightToLeft();
    void shiftIncrement();
    void shiftDecrement();
    void noBacklight();
    void backlight();
    void autoscroll();
    void noAutoscroll(); 
    void createChar(uint8_t, uint8_t[]);
    void setCursor(uint8_t, uint8_t); 
  #if defined(ARDUINO) && ARDUINO >= 100
    virtual size_t write(uint8_t);
  #else
    virtual void write(uint8_t);
  #endif
    void command(uint8_t);
    void init();
  
  ////compatibility API function aliases
  void blink_on();            // alias for blink()
  void blink_off();                 // alias for noBlink()
  void cursor_on();                 // alias for cursor()
  void cursor_off();                // alias for noCursor()
  void setBacklight(uint8_t new_val);       // alias for backlight() and nobacklight()
  void load_custom_character(uint8_t char_num, uint8_t *rows);  // alias for createChar()
  void printstr(const char[]);
  
  ////Unsupported API functions (not implemented in this library)
  uint8_t status();
  void setContrast(uint8_t new_val);
  uint8_t keypad();
  void setDelay(int,int);
  void on();
  void off();
  uint8_t init_bargraph(uint8_t graphtype);
  void draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len,  uint8_t pixel_col_end);
  void draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len,  uint8_t pixel_col_end);
     
  
  private:
    void init_priv();
    void send(uint8_t, uint8_t);
    void write4bits(uint8_t);
    void expanderWrite(uint8_t);
    void pulseEnable(uint8_t);
    uint8_t _Addr;
    uint8_t _displayfunction;
    uint8_t _displaycontrol;
    uint8_t _displaymode;
    uint8_t _numlines;
    uint8_t _cols;
    uint8_t _rows;
    uint8_t _backlightval;
  };
  
  #endif
  