display_putchar.c
1.51 KB
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
/*
* Copyright (C) 2014 INRIA
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup chronos
* @{
*/
/**
* @file
* @brief eZ430-chronos putchar via display implementation
*
* @author Oliver Hahm <oliver.hahm@inria.fr>
* @author Kaspar Schleiser <kaspar@schleiser.de>
* @author Ludwig Knüpfer <ludwig.knuepfer@fu-berlin.de>
* @author Aleksandr Mikoff <sir.enmity@gmail.com>
*
*/
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "display.h"
extern void (*_putchar)(int c);
static char display_buf[11];
void putchar_to_display(int c);
void init_display_putchar(void)
{
memset(display_buf, '\0', 11);
_putchar = putchar_to_display;
}
void putchar_to_display(int c)
{
if (c == '\n') {
display_buf[4] = 1;
return;
}
if (display_buf[4]) {
memset(display_buf, '\0', 11);
}
else {
display_buf[0] = display_buf[1];
display_buf[1] = display_buf[2];
display_buf[2] = display_buf[3];
display_buf[3] = display_buf[5];
display_buf[5] = display_buf[6];
display_buf[6] = display_buf[7];
display_buf[7] = display_buf[8];
display_buf[8] = display_buf[9];
}
display_buf[9] = toupper(c);
clear_display_all();
display_chars(LCD_SEG_L1_3_0, display_buf, SEG_ON);
display_chars(LCD_SEG_L2_5_0, display_buf + 4, SEG_ON);
}