forked from jeelabs/jeelib
-
Notifications
You must be signed in to change notification settings - Fork 0
/
PortsLCD.h
147 lines (122 loc) · 4.21 KB
/
PortsLCD.h
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
// 2009-09-23 <[email protected]> http://opensource.org/licenses/mit-license.php
#ifndef LiquidCrystal_h
#define LiquidCrystal_h
/// @file
/// LiquidCrystal library, extended for use over I2C with the LCD Plug.
/// See http://jeelabs.org/2009/09/26/generalized-liquidcrystal-library/
#include <inttypes.h>
#include <Print.h>
#include <Ports.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
/// Base class for different types of interfaces to character LCD's.
/// This class defines the basic functionality needed to drive an LCD display.
/// It is an incomplete (abstract) base class, which needs to be extended.
/// See the LiquidCrystal and LiquidCrystalI2C classes for two usable versions.
class LiquidCrystalBase : public Print {
public:
LiquidCrystalBase () {}
void begin(byte cols, byte rows, byte 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(byte, byte[]);
void setCursor(byte, byte);
virtual WRITE_RESULT write(byte);
void command(byte);
protected:
virtual void config() =0;
virtual void send(byte, byte) =0;
virtual void write4bits(byte) =0;
byte _displayfunction;
byte _displaycontrol;
byte _displaymode;
byte _initialized;
byte _numlines,_currline;
};
/// Interface to character LCD's connected via 4 to 8 I/O pins.
/// This class can be used to create an object with drives an LCD through many
/// different I/O pins, connected to the display in parallel - it is equivalent
/// to the LiquidCrystal class defined in the Arduino, but has be adjusted to
/// work with the above LiquidCrystalBase instead.
class LiquidCrystal : public LiquidCrystalBase {
public:
LiquidCrystal(byte rs, byte enable,
byte d0, byte d1, byte d2, byte d3, byte d4, byte d5, byte d6, byte d7);
LiquidCrystal(byte rs, byte rw, byte enable,
byte d0, byte d1, byte d2, byte d3, byte d4, byte d5, byte d6, byte d7);
LiquidCrystal(byte rs, byte rw, byte enable,
byte d0, byte d1, byte d2, byte d3);
LiquidCrystal(byte rs, byte enable,
byte d0, byte d1, byte d2, byte d3);
void init(byte fourbitmode, byte rs, byte rw, byte enable,
byte d0, byte d1, byte d2, byte d3, byte d4, byte d5, byte d6, byte d7);
virtual void config();
virtual void send(byte, byte);
virtual void write4bits(byte);
void write8bits(byte);
void pulseEnable();
byte _rs_pin; // LOW: command. HIGH: character.
byte _rw_pin; // LOW: write to LCD. HIGH: read from LCD.
byte _enable_pin; // activated by a HIGH pulse.
byte _data_pins[8];
};
/// Interface to character LCD's connected via 2 I/O pins using software I2C.
/// This class allows driving an LCD connected via I2C using an LCD Plug, which
/// is in turn based on an MCP23008 I2C I/O expander chip and some other parts.
/// The available functions include all those of the LiquidCrystal class.
class LiquidCrystalI2C : public LiquidCrystalBase {
DeviceI2C device;
public:
LiquidCrystalI2C (const PortI2C& p, byte addr =0x24);
// this display can also turn the back-light on or off
void backlight();
void noBacklight();
protected:
virtual void config();
virtual void send(byte, byte);
virtual void write4bits(byte);
};
#endif