99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
#ifndef LiquidCrystal_h
|
|
#define LiquidCrystal_h
|
|
|
|
#include "DigitalIoPin.h"
|
|
#include "chip.h"
|
|
#include <cstddef>
|
|
#include <string>
|
|
|
|
|
|
// 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 LiquidCrystal
|
|
{
|
|
public:
|
|
LiquidCrystal (DigitalIoPin *rs, DigitalIoPin *enable, DigitalIoPin *d0,
|
|
DigitalIoPin *d1, DigitalIoPin *d2, DigitalIoPin *d3);
|
|
|
|
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 size_t write (uint8_t);
|
|
void command (uint8_t);
|
|
void print (std::string const &s);
|
|
void print (const char *s);
|
|
|
|
private:
|
|
void send (uint8_t, uint8_t);
|
|
void write4bits (uint8_t);
|
|
void pulseEnable ();
|
|
|
|
DigitalIoPin *rs_pin; // LOW(false): command. HIGH(true): character.
|
|
DigitalIoPin *enable_pin; // activated by a HIGH pulse.
|
|
DigitalIoPin *data_pins[4];
|
|
|
|
uint8_t _displayfunction;
|
|
uint8_t _displaycontrol;
|
|
uint8_t _displaymode;
|
|
|
|
uint8_t _initialized;
|
|
|
|
uint8_t _numlines, _currline;
|
|
uint8_t rows, col;
|
|
};
|
|
|
|
#endif
|