TextLCD library for controlling various LCD panels based on the HD44780 4-bit interface
Dependents:
TextLCD_HelloWorld
analog_test
AVR_standalone_writer
XBeeApi_RemoteCommand
... more
TextDisplay.cpp@0:edfb85c53631, 2010-05-22 (annotated)
- Committer:
- simon
- Date:
- Sat May 22 18:18:19 2010 +0000
- Revision:
- 0:edfb85c53631
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|
| simon |
0:edfb85c53631
|
1
|
/* mbed TextDisplay Library Base Class
|
| simon |
0:edfb85c53631
|
2
|
* Copyright (c) 2007-2010, sford
|
| simon |
0:edfb85c53631
|
3
|
*
|
| simon |
0:edfb85c53631
|
4
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
| simon |
0:edfb85c53631
|
5
|
* of this software and associated documentation files (the "Software"), to deal
|
| simon |
0:edfb85c53631
|
6
|
* in the Software without restriction, including without limitation the rights
|
| simon |
0:edfb85c53631
|
7
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
| simon |
0:edfb85c53631
|
8
|
* copies of the Software, and to permit persons to whom the Software is
|
| simon |
0:edfb85c53631
|
9
|
* furnished to do so, subject to the following conditions:
|
| simon |
0:edfb85c53631
|
10
|
*
|
| simon |
0:edfb85c53631
|
11
|
* The above copyright notice and this permission notice shall be included in
|
| simon |
0:edfb85c53631
|
12
|
* all copies or substantial portions of the Software.
|
| simon |
0:edfb85c53631
|
13
|
*
|
| simon |
0:edfb85c53631
|
14
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
| simon |
0:edfb85c53631
|
15
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
| simon |
0:edfb85c53631
|
16
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
| simon |
0:edfb85c53631
|
17
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
| simon |
0:edfb85c53631
|
18
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
| simon |
0:edfb85c53631
|
19
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
| simon |
0:edfb85c53631
|
20
|
* THE SOFTWARE.
|
| simon |
0:edfb85c53631
|
21
|
*/
|
| simon |
0:edfb85c53631
|
22
|
|
| simon |
0:edfb85c53631
|
23
|
#include "TextDisplay.h"
|
| simon |
0:edfb85c53631
|
24
|
|
| simon |
0:edfb85c53631
|
25
|
TextDisplay::TextDisplay() {
|
| simon |
0:edfb85c53631
|
26
|
_row = 0;
|
| simon |
0:edfb85c53631
|
27
|
_column = 0;
|
| simon |
0:edfb85c53631
|
28
|
}
|
| simon |
0:edfb85c53631
|
29
|
|
| simon |
0:edfb85c53631
|
30
|
int TextDisplay::_putc(int value) {
|
| simon |
0:edfb85c53631
|
31
|
if(value == '\n') {
|
| simon |
0:edfb85c53631
|
32
|
_column = 0;
|
| simon |
0:edfb85c53631
|
33
|
_row++;
|
| simon |
0:edfb85c53631
|
34
|
if(_row >= rows()) {
|
| simon |
0:edfb85c53631
|
35
|
_row = 0;
|
| simon |
0:edfb85c53631
|
36
|
}
|
| simon |
0:edfb85c53631
|
37
|
} else {
|
| simon |
0:edfb85c53631
|
38
|
character(_column, _row, value);
|
| simon |
0:edfb85c53631
|
39
|
_column++;
|
| simon |
0:edfb85c53631
|
40
|
if(_column >= columns()) {
|
| simon |
0:edfb85c53631
|
41
|
_column = 0;
|
| simon |
0:edfb85c53631
|
42
|
_row++;
|
| simon |
0:edfb85c53631
|
43
|
if(_row >= rows()) {
|
| simon |
0:edfb85c53631
|
44
|
_row = 0;
|
| simon |
0:edfb85c53631
|
45
|
}
|
| simon |
0:edfb85c53631
|
46
|
}
|
| simon |
0:edfb85c53631
|
47
|
}
|
| simon |
0:edfb85c53631
|
48
|
return value;
|
| simon |
0:edfb85c53631
|
49
|
}
|
| simon |
0:edfb85c53631
|
50
|
|
| simon |
0:edfb85c53631
|
51
|
// a basic cls implementation, that should generally be overwritten
|
| simon |
0:edfb85c53631
|
52
|
// with a more efficient implementation
|
| simon |
0:edfb85c53631
|
53
|
void TextDisplay::cls() {
|
| simon |
0:edfb85c53631
|
54
|
locate(0, 0);
|
| simon |
0:edfb85c53631
|
55
|
for(int i=0; i<columns()*rows(); i++) {
|
| simon |
0:edfb85c53631
|
56
|
putc(' ');
|
| simon |
0:edfb85c53631
|
57
|
}
|
| simon |
0:edfb85c53631
|
58
|
}
|
| simon |
0:edfb85c53631
|
59
|
|
| simon |
0:edfb85c53631
|
60
|
void TextDisplay::locate(int column, int row) {
|
| simon |
0:edfb85c53631
|
61
|
_column = column;
|
| simon |
0:edfb85c53631
|
62
|
_row = row;
|
| simon |
0:edfb85c53631
|
63
|
}
|
| simon |
0:edfb85c53631
|
64
|
|
| simon |
0:edfb85c53631
|
65
|
int TextDisplay::_getc() {
|
| simon |
0:edfb85c53631
|
66
|
return -1;
|
| simon |
0:edfb85c53631
|
67
|
}
|
| simon |
0:edfb85c53631
|
68
|
|
| simon |
0:edfb85c53631
|
69
|
void TextDisplay::foreground(int colour) {
|
| simon |
0:edfb85c53631
|
70
|
_foreground = colour;
|
| simon |
0:edfb85c53631
|
71
|
}
|
| simon |
0:edfb85c53631
|
72
|
|
| simon |
0:edfb85c53631
|
73
|
void TextDisplay::background(int colour) {
|
| simon |
0:edfb85c53631
|
74
|
_background = colour;
|
| simon |
0:edfb85c53631
|
75
|
}
|
Simon Ford
HD44780 Text LCD