blob: 0bfda2b1581e11eb04c8fe5aa4598c562e576db8 (
plain)
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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
Copyright 2014 Jun Wako <wakojun@gmail.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
#include "action.h"
#include "print.h"
#include "debug.h"
#include "util.h"
#include "ibm4704.h"
#include "matrix.h"
static void matrix_make(uint8_t code);
static void matrix_break(uint8_t code);
static void matrix_clear(void);
/*
* Matrix Array usage:
* IBM 4704 scan codes are assigned into 128(16x8)-cell matrix.
*
* 8bit wide
* +---------+
* 0| |
* :| XX | 00-7F
* f| |
* +---------+
*
* Exceptions:
*/
static uint8_t matrix[MATRIX_ROWS];
// scan code bits 7654 3210
// R:row/C:column -RRR RCCC
#define ROW(code) ((code>>3)&0x0f)
#define COL(code) (code&0x07)
inline
uint8_t matrix_rows(void)
{
return MATRIX_ROWS;
}
inline
uint8_t matrix_cols(void)
{
return MATRIX_COLS;
}
static void enable_break(void)
{
uint8_t ret;
print("Enable break: ");
// valid scancode: 00-77h
for (uint8_t code = 0; code < 0x78; code++) {
while (ibm4704_send(0x80|code) != 0) {
print("z");
_delay_us(500);
}
_delay_us(2000);
ret = ibm4704_recv();
if (ret != 0xff) {
xprintf("c%02X:r%02X ", code, ret);
}
_delay_us(1000);
}
_delay_us(1000);
while (ibm4704_send(0xFF) != 0) { _delay_us(500); } // End
print("End\n");
}
void matrix_init(void)
{
uint8_t ret;
debug_enable = true;
ibm4704_init();
matrix_clear();
// read keyboard id
while ((ret = ibm4704_recv()) == 0xFF) {
ibm4704_send(0xFE);
_delay_us(100);
}
_delay_ms(2000); // wait for starting up debug console
print("IBM 4704 converter\n");
xprintf("Keyboard ID: %02X\n", ret);
enable_break();
}
/*
* IBM 4704 Scan Code
*/
uint8_t matrix_scan(void)
{
uint8_t code = ibm4704_recv();
if (code==0xFF) {
// Not receivd
return 0;
} else if ((code&0x78)==0x78) {
// 0xFF-F8 and 0x7F-78 is not scancode
xprintf("Error: %0X\n", code);
matrix_clear();
return 0;
} else if (code&0x80) {
matrix_make(code);
} else {
matrix_break(code);
}
return 1;
}
inline
bool matrix_is_on(uint8_t row, uint8_t col)
{
return (matrix[row] & (1<<col));
}
inline
uint8_t matrix_get_row(uint8_t row)
{
return matrix[row];
}
void matrix_print(void)
{
print("\nr/c 01234567\n");
for (uint8_t row = 0; row < matrix_rows(); row++) {
xprintf("%02X: %08b\n", row, bitrev(matrix_get_row(row)));
}
}
inline
static void matrix_make(uint8_t code)
{
matrix[ROW(code)] |= 1<<COL(code);
}
inline
static void matrix_break(uint8_t code)
{
matrix[ROW(code)] &= ~(1<<COL(code));
}
inline
static void matrix_clear(void)
{
for (uint8_t i=0; i < MATRIX_ROWS; i++) matrix[i] = 0x00;
}
|
