-
Notifications
You must be signed in to change notification settings - Fork 0
/
TextLCD.h
113 lines (96 loc) · 3.35 KB
/
TextLCD.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
/* mbed TextLCD Library, for a 4-bit LCD based on HD44780
* Copyright (c) 2007-2010, sford, http://mbed.org
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#ifndef MBED_TEXTLCD_H
#define MBED_TEXTLCD_H
#include "mbed.h"
/** A TextLCD interface for driving 4-bit HD44780-based LCDs
*
* Currently supports 16x2, 20x2 and 20x4 panels
*
* @code
* #include "mbed.h"
* #include "TextLCD.h"
*
* TextLCD lcd(p10, p12, p15, p16, p29, p30); // rs, e, d4-d7
*
* int main() {
* lcd.printf("Hello World!\n");
* }
* @endcode
*/
class TextLCD : public Stream {
public:
/** LCD panel format */
enum LCDType {
LCD16x2 /**< 16x2 LCD panel (default) */
, LCD16x2B /**< 16x2 LCD panel alternate addressing */
, LCD20x2 /**< 20x2 LCD panel */
, LCD20x4 /**< 20x4 LCD panel */
};
/** Create a TextLCD interface
*
* @param rs Instruction/data control line
* @param e Enable line (clock)
* @param d4-d7 Data lines for using as a 4-bit interface
* @param type Sets the panel size/addressing mode (default = LCD16x2)
*/
TextLCD(PinName rs, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2);
#if DOXYGEN_ONLY
/** Write a character to the LCD
*
* @param c The character to write to the display
*/
int putc(int c);
/** Write a formated string to the LCD
*
* @param format A printf-style format string, followed by the
* variables to use in formating the string.
*/
int printf(const char* format, ...);
#endif
/** Locate to a screen column and row
*
* @param column The horizontal position from the left, indexed from 0
* @param row The vertical position from the top, indexed from 0
*/
void locate(int column, int row);
/** Clear the screen and locate to 0,0 */
void cls();
int rows();
int columns();
void degree_celsius_symbol(const int byte_arr[8]);
protected:
// Stream implementation functions
virtual int _putc(int value);
virtual int _getc();
int address(int column, int row);
void character(int column, int row, int c);
void writeByte(int value);
void writeCommand(int command);
void writeData(int data);
DigitalOut _rs, _e;
BusOut _d;
LCDType _type;
int _column;
int _row;
};
#endif