126 lines
3.3 KiB
C++
126 lines
3.3 KiB
C++
//YWROBOT
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#ifndef LiquidCrystal_I2C_h
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#define LiquidCrystal_I2C_h
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#include <inttypes.h>
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#include "Print.h"
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#include <Wire.h>
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// commands
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#define LCD_CLEARDISPLAY 0x01
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#define LCD_RETURNHOME 0x02
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#define LCD_ENTRYMODESET 0x04
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#define LCD_DISPLAYCONTROL 0x08
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#define LCD_CURSORSHIFT 0x10
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#define LCD_FUNCTIONSET 0x20
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#define LCD_SETCGRAMADDR 0x40
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#define LCD_SETDDRAMADDR 0x80
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// flags for display entry mode
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#define LCD_ENTRYRIGHT 0x00
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#define LCD_ENTRYLEFT 0x02
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#define LCD_ENTRYSHIFTINCREMENT 0x01
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#define LCD_ENTRYSHIFTDECREMENT 0x00
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// flags for display on/off control
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#define LCD_DISPLAYON 0x04
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#define LCD_DISPLAYOFF 0x00
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#define LCD_CURSORON 0x02
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#define LCD_CURSOROFF 0x00
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#define LCD_BLINKON 0x01
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#define LCD_BLINKOFF 0x00
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// flags for display/cursor shift
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#define LCD_DISPLAYMOVE 0x08
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#define LCD_CURSORMOVE 0x00
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#define LCD_MOVERIGHT 0x04
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#define LCD_MOVELEFT 0x00
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// flags for function set
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#define LCD_8BITMODE 0x10
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#define LCD_4BITMODE 0x00
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#define LCD_2LINE 0x08
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#define LCD_1LINE 0x00
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#define LCD_5x10DOTS 0x04
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#define LCD_5x8DOTS 0x00
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// flags for backlight control
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#define LCD_BACKLIGHT 0x08
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#define LCD_NOBACKLIGHT 0x00
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#define En B00000100 // Enable bit
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#define Rw B00000010 // Read/Write bit
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#define Rs B00000001 // Register select bit
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class LiquidCrystal_I2C : public Print {
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public:
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LiquidCrystal_I2C(uint8_t lcd_Addr,uint8_t lcd_cols,uint8_t lcd_rows);
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void begin(uint8_t cols, uint8_t rows, uint8_t charsize = LCD_5x8DOTS );
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void clear();
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void home();
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void noDisplay();
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void display();
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void noBlink();
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void blink();
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void noCursor();
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void cursor();
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void scrollDisplayLeft();
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void scrollDisplayRight();
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void printLeft();
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void printRight();
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void leftToRight();
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void rightToLeft();
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void shiftIncrement();
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void shiftDecrement();
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void noBacklight();
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void backlight();
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void autoscroll();
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void noAutoscroll();
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void createChar(uint8_t, uint8_t[]);
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void setCursor(uint8_t, uint8_t);
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#if defined(ARDUINO) && ARDUINO >= 100
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virtual size_t write(uint8_t);
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#else
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virtual void write(uint8_t);
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#endif
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void command(uint8_t);
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void init();
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////compatibility API function aliases
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void blink_on(); // alias for blink()
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void blink_off(); // alias for noBlink()
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void cursor_on(); // alias for cursor()
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void cursor_off(); // alias for noCursor()
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void setBacklight(uint8_t new_val); // alias for backlight() and nobacklight()
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void load_custom_character(uint8_t char_num, uint8_t *rows); // alias for createChar()
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void printstr(const char[]);
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////Unsupported API functions (not implemented in this library)
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uint8_t status();
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void setContrast(uint8_t new_val);
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uint8_t keypad();
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void setDelay(int,int);
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void on();
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void off();
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uint8_t init_bargraph(uint8_t graphtype);
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void draw_horizontal_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end);
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void draw_vertical_graph(uint8_t row, uint8_t column, uint8_t len, uint8_t pixel_col_end);
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private:
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void init_priv();
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void send(uint8_t, uint8_t);
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void write4bits(uint8_t);
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void expanderWrite(uint8_t);
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void pulseEnable(uint8_t);
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uint8_t _Addr;
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uint8_t _displayfunction;
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uint8_t _displaycontrol;
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uint8_t _displaymode;
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uint8_t _numlines;
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uint8_t _cols;
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uint8_t _rows;
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uint8_t _backlightval;
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};
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#endif
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