-
Notifications
You must be signed in to change notification settings - Fork 5
/
i2c_lcd.h
85 lines (74 loc) · 2.35 KB
/
i2c_lcd.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
/********************************
* i2c_lcd.h
*
* Created on: October 11, 2018
* Author: Hunter Hedges
*
********************************/
#ifndef I2C_LCD_H_
#define I2C_LCD_H_
#define CHAR_WIDTH 5 // Chars are 5 bits wide
#define CHAR_HEIGHT 8 // Chars are 8 bits high
// Display 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
// Text direction
#define LCD_ENTRYRIGHT 0x00
#define LCD_ENTRYLEFT 0x02
#define LCD_ENTRYSHIFTINCREMENT 0x01
#define LCD_ENTRYSHIFTDECREMENT 0x00
// Display controls
#define LCD_DISPLAYON 0x04
#define LCD_DISPLAYOFF 0x00
#define LCD_CURSORON 0x02
#define LCD_CURSOROFF 0x00
#define LCD_BLINKON 0x01
#define LCD_BLINKOFF 0x00
// Cursor shifts
#define LCD_DISPLAYMOVE 0x08
#define LCD_CURSORMOVE 0x00
#define LCD_MOVERIGHT 0x04
#define LCD_MOVELEFT 0x00
// Function controls
#define LCD_4BITMODE 0x00
#define LCD_2LINE 0x08
#define LCD_5x8DOTS 0x00
// Back light control
#define LCD_BACKLIGHT 0x08
#define LCD_NOBACKLIGHT 0x00
// Writing bits
#define ENABLE_BIT 0b00000100
#define READ_WRITE_BIT 0b00000010
#define REG_SELECT_BIT 0b00000001
/********************************
* User Functions
********************************/
int LCD_init(uint8_t slaveAddress);
void LCD_clear(void);
void LCD_home(void);
void LCD_displayOn(void);
void LCD_displayOff(void);
int LCD_setCursorPosition(uint8_t row, uint8_t col);
void LCD_cursorOn(void);
void LCD_cursorOff(void);
void LCD_blinkOn(void);
void LCD_blinkOff(void);
void LCD_shiftDisplayLeft(void);
void LCD_shiftDisplayRight(void);
void LCD_textLeftToRight(void);
void LCD_textRightToLeft(void);
void LCD_autoscrollOn(void);
void LCD_autoscrollOff(void);
void LCD_backlightOn(void);
void LCD_backlightOff(void);
int LCD_isBacklightOn(void);
int LCD_createChar(uint8_t memAddress, uint8_t charMap[]);
void LCD_writeChar(uint8_t value);
void LCD_writeString(uint8_t * charBuffer, uint8_t numChars);
#endif /* I2C_LCD_H_ */