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
|
/* Copyright 2021 Jay Greco
*
* 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 <string.h>
#include "util.h"
#include "matrix.h"
#include "split_util.h"
#include "quantum.h"
#define VIRT_COLS_PER_HAND 1
#define PHYS_COLS_PER_HAND (MATRIX_COLS - VIRT_COLS_PER_HAND)
#define ROWS_PER_HAND (MATRIX_ROWS / 2)
#define COL_SHIFTER ((uint32_t)1)
#define EXT_PIN_ROW 2
#define EXT_PIN_COL 8
// Row & column pins
static uint8_t row_pins_left[MATRIX_ROWS] = MATRIX_ROW_PINS;
static uint8_t col_pins_left[MATRIX_MUX_COLS] = MATRIX_COL_MUX_PINS;
static uint8_t row_pins_right[MATRIX_ROWS] = MATRIX_ROW_PINS_RIGHT;
static uint8_t col_pins_right[MATRIX_MUX_COLS] = MATRIX_COL_MUX_PINS_RIGHT;
static uint8_t* row_pins = row_pins_left;
static uint8_t* col_pins = col_pins_left;
// Internal functions
static void init_pins(void) {
// Set cols to outputs, low
for (uint8_t pin = 0; pin < MATRIX_MUX_COLS; pin++) {
setPinOutput(col_pins[pin]);
}
// Unselect cols
for (uint8_t bit = 0; bit < MATRIX_MUX_COLS; bit++) {
writePinLow(col_pins[bit]);
}
// Set rows to input, pullup
for (uint8_t pin = 0; pin < ROWS_PER_HAND; pin++) {
setPinInputHigh(row_pins[pin]);
}
// Set extended pin (only on right side)
if (!isLeftHand) {
// Set extended pin to input, pullup
setPinInputHigh(MATRIX_EXT_PIN_RIGHT);
}
}
static void select_col(uint8_t col) {
// Drive demux with correct column address
for (uint8_t bit = 0; bit < MATRIX_MUX_COLS; bit++) {
uint8_t state = (col & (0b1 << bit)) >> bit;
writePin(col_pins[bit], !state);
}
}
static void read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
select_col(current_col % PHYS_COLS_PER_HAND);
wait_us(5);
// Read each row sequentially
for (uint8_t row_index = 0; row_index < ROWS_PER_HAND; row_index++) {
if (readPin(row_pins[row_index]) == 0) {
current_matrix[row_index] |= (COL_SHIFTER << current_col);
} else {
current_matrix[row_index] &= ~(COL_SHIFTER << current_col);
}
}
}
static void read_ext_pin(matrix_row_t current_matrix[]) {
// Read the state of the extended matrix pin
if (!isLeftHand) {
if (readPin(MATRIX_EXT_PIN_RIGHT) == 0) {
current_matrix[EXT_PIN_ROW] |= (COL_SHIFTER << EXT_PIN_COL);
} else {
current_matrix[EXT_PIN_ROW] &= ~(COL_SHIFTER << EXT_PIN_COL);
}
}
}
void matrix_init_custom(void) {
if (!isLeftHand) {
row_pins = row_pins_right;
col_pins = col_pins_right;
}
init_pins();
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
matrix_row_t last_matrix[MATRIX_ROWS];
memcpy(last_matrix, current_matrix, sizeof(last_matrix));
#ifdef DEBUG_SLOW_MATRIX
// Slow for debugging
wait_ms(1000);
#endif
// Set col, read rows
for (uint8_t current_col = 0; current_col < PHYS_COLS_PER_HAND; current_col++) {
read_rows_on_col(current_matrix, current_col);
}
// Read extended pin and store in matrix
read_ext_pin(current_matrix);
// Check if the matrix changed
bool changed = memcmp(last_matrix, current_matrix, sizeof(last_matrix)) != 0;
return changed;
}
|
