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/***************************************************
This is a library for the Adafruit RGB 16x2 LCD Shield
Pick one up at the Adafruit shop!
---------> http://http://www.adafruit.com/products/714
The shield uses I2C to communicate, 2 pins are required to
interface
Adafruit invests time and resources providing this open source code,
please support Adafruit and open-source hardware by purchasing
products from Adafruit!
Written by Limor Fried/Ladyada for Adafruit Industries.
BSD license, all text above must be included in any redistribution
****************************************************/
#ifndef Adafruit_RGBLCDShield_h
#define Adafruit_RGBLCDShield_h
#include <inttypes.h>
#include "Print.h"
#include <Adafruit_MCP23017.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
#define BUTTON_UP 0x08
#define BUTTON_DOWN 0x04
#define BUTTON_LEFT 0x10
#define BUTTON_RIGHT 0x02
#define BUTTON_SELECT 0x01
class Adafruit_RGBLCDShield : public Print {
public:
Adafruit_RGBLCDShield();
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 clear();
void home();
void noDisplay();
void display();
void noBlink();
void blink();
void noCursor();
void cursor();
void scrollDisplayLeft();
void scrollDisplayRight();
void leftToRight();
void rightToLeft();
void autoscroll();
void noAutoscroll();
// only if using backpack
void setBacklight(uint8_t status);
void createChar(uint8_t, uint8_t[]);
void setCursor(uint8_t, uint8_t);
#if ARDUINO >= 100
virtual size_t write(uint8_t);
#else
virtual void write(uint8_t);
#endif
void command(uint8_t);
uint8_t readButtons();
private:
void send(uint8_t, uint8_t);
void write4bits(uint8_t);
void write8bits(uint8_t);
void pulseEnable();
void _digitalWrite(uint8_t, uint8_t);
void _pinMode(uint8_t, uint8_t);
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 _button_pins[5];
uint8_t _displayfunction;
uint8_t _displaycontrol;
uint8_t _displaymode;
uint8_t _initialized;
uint8_t _numlines,_currline;
uint8_t _i2cAddr;
Adafruit_MCP23017 _i2c;
};
#endif
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