/* Copyright 2009-2011 Oleg Mazurov, Circuits At Home, http://www.circuitsathome.com */ | |
//HD44780 compatible LCD display via MAX3421E GPOUT support header | |
//pinout: D[4-7] -> GPOUT[4-7], RS-> GPOUT[2], E ->GPOUT[3] | |
// | |
//this code is heavily borrowed from official Arduino source v.0017 | |
// link to original http://code.google.com/p/arduino/source/browse/trunk/hardware/libraries/LiquidCrystal/LiquidCrystal.h | |
// | |
#ifndef _Max_LCD_h_ | |
#define _Max_LCD_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 | |
class Max_LCD : public Print { | |
public: | |
Max_LCD(); | |
void init(); | |
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(); | |
void createChar(uint8_t, uint8_t[]); | |
void setCursor(uint8_t, uint8_t); | |
virtual void write(uint8_t); | |
void command(uint8_t); | |
private: | |
void sendbyte( uint8_t val ); | |
uint8_t _displayfunction; //tokill | |
uint8_t _displaycontrol; | |
uint8_t _displaymode; | |
uint8_t _initialized; | |
uint8_t _numlines,_currline; | |
}; | |
#endif |