blob: f6e95108737c879aabc49db5ad934b4aff7d6181 (
plain) (
blame)
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
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
#include <stdint.h>
#include <stdbool.h>
#include <avr/io.h>
#include <util/delay.h>
#include "print.h"
#include "debug.h"
#include "util.h"
#include "matrix.h"
#ifndef DEBOUNCE
# define DEBOUNCE 5
#endif
static uint8_t debouncing = DEBOUNCE;
static matrix_row_t matrix[MATRIX_ROWS];
static matrix_row_t matrix_debouncing[MATRIX_ROWS];
static uint8_t read_rows(void);
static void init_rows(void);
static void unselect_cols(void);
static void select_col(uint8_t col);
inline uint8_t matrix_rows(void) {
return MATRIX_ROWS;
}
inline uint8_t matrix_cols(void) {
return MATRIX_COLS;
}
__attribute__ ((weak))
void matrix_init_kb(void) {
matrix_init_user();
}
__attribute__ ((weak))
void matrix_scan_kb(void) {
matrix_scan_user();
}
__attribute__ ((weak))
void matrix_init_user(void) {
}
__attribute__ ((weak))
void matrix_scan_user(void) {
}
void matrix_init(void) {
// initialize row and col
unselect_cols();
init_rows();
// initialize matrix state: all keys off
for (uint8_t i=0; i < MATRIX_ROWS; i++) {
matrix[i] = 0;
matrix_debouncing[i] = 0;
}
matrix_init_quantum();
}
uint8_t matrix_scan(void) {
for (uint8_t col = 0; col < MATRIX_COLS; col++) {
select_col(col);
_delay_us(3);
uint8_t rows = read_rows();
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col);
bool curr_bit = rows & (1<<row);
if (prev_bit != curr_bit) {
matrix_debouncing[row] ^= ((matrix_row_t)1<<col);
debouncing = DEBOUNCE;
}
}
unselect_cols();
}
if (debouncing) {
if (--debouncing) {
_delay_ms(1);
} else {
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
matrix[i] = matrix_debouncing[i];
}
}
}
matrix_scan_quantum();
return 1;
}
bool matrix_is_modified(void) {
if (debouncing)
return false;
else
return true;
}
inline bool matrix_is_on(uint8_t row, uint8_t col) {
return (matrix[row] & ((matrix_row_t)1<<col));
}
inline matrix_row_t matrix_get_row(uint8_t row) {
return matrix[row];
}
void matrix_print(void) {
print("\nr/c 0123456789ABCDEF\n");
for (uint8_t row = 0; row < MATRIX_ROWS; row++) {
xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row)));
}
}
uint8_t matrix_key_count(void) {
uint8_t count = 0;
for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
count += bitpop32(matrix[i]);
}
return count;
}
/* Row pin configuration
*
* row: 0 1 2 3 4 5
* pin: C7 B1 B2 C6 B4 B5
*
*/
static void init_rows(void)
{
DDRC &= ~0b11000000;
DDRB &= ~0b00110110;
PORTC |= 0b11000000;
PORTB |= 0b00110110;
}
static uint8_t read_rows(void) {
return (PINC&(1<<PC7) ? 0 : (1<<0)) |
(PINB&(1<<PB1) ? 0 : (1<<1)) |
(PINB&(1<<PB2) ? 0 : (1<<2)) |
(PINC&(1<<PC6) ? 0 : (1<<3)) |
(PINB&(1<<PB4) ? 0 : (1<<4)) |
(PINB&(1<<PB5) ? 0 : (1<<5));
}
/* Row pin configuration
* pin: D3 D7 D6 D5 D4
* row: off 0 x x x x
* 0 1 0 0 0 0
* 1 1 0 0 0 1
* 2 1 0 0 1 0
* 3 1 0 0 1 1
* 4 1 0 1 0 0
* 5 1 0 1 0 1
* 6 1 0 1 1 0
* 7 1 0 1 1 1
* 8 1 1 0 0 0
* 9 1 1 0 0 1
* 10 1 1 0 1 0
* 11 1 1 0 1 1
* 12 1 1 1 0 0
* 13 1 1 1 0 1
* 14 1 1 1 1 0
* 15 1 1 1 1 1
*/
static void unselect_cols(void)
{
// output high(DDR:1, PORT:1) to unselect
DDRB |= (1 << PD3);
PORTB |= (1 << PD3);
}
static void select_col(uint8_t col) {
DDRD |= (1<<PD3 | 1<<PD4 | 1<<PD5 | 1<<PD6 | 1<<PD7);
PORTD &= ~(1<<PD3);
if (col & (1<<0)) {
PORTD |= (1<<PD4);
}
else {
PORTD &= ~(1<<PD4);
}
if (col & (1<<1)) {
PORTD |= (1<<PD5);
}
else {
PORTD &= ~(1<<PD5);
}
if (col & (1<<2)) {
PORTD |= (1<<PD6);
}
else {
PORTD &= ~(1<<PD6);
}
if (col & (1<<3)) {
PORTD |= (1<<PD7);
}
else {
PORTD &= ~(1<<PD7);
}
}
|
