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
|
/* Copyright 2023 @ Keychron (https://www.keychron.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 "hal.h"
#include "gpio.h"
#include "quantum.h"
#define HC595_STCP B0
#define HC595_SHCP A1
#define HC595_DS A7
#define DIRECT_COL_NUM 1
pin_t row_pins[MATRIX_ROWS] = MATRIX_ROW_PINS;
pin_t col_pins[MATRIX_COLS] = MATRIX_COL_PINS;
static inline void HC595_delay(uint16_t n) {
while (n-- > 0) {
asm volatile("nop" ::: "memory");
}
}
#ifdef DRIVE_SHRIFT_REGISTER_WITH_SPI
// clang-format off
const SPIConfig hs_spicfg = {
.circular = false,
.slave = false,
.data_cb = NULL,
.error_cb = NULL,
.ssport = PAL_PORT(HC595_STCP),
.sspad = PAL_PAD(HC595_STCP),
.cr1 = SPI_CR1_BR_1,
.cr2 = SPI_CR2_DS_3 | SPI_CR2_DS_2 | SPI_CR2_DS_1 | SPI_CR2_DS_0 | SPI_CR2_SSOE | SPI_CR2_NSSP
};
// clang-format on
#endif
static void HC595_output(uint16_t data) {
#ifdef DRIVE_SHRIFT_REGISTER_WITH_SPI
spiSend(&SPID1, 1, &data);
#else
uint8_t i;
uint8_t n = 1;
for (i = 16; i > 0; i--) {
writePinLow(HC595_SHCP);
if (data & 0x8000)
writePinHigh(HC595_DS);
else
writePinLow(HC595_DS);
data <<= 1;
HC595_delay(n);
writePinHigh(HC595_SHCP);
HC595_delay(n);
}
HC595_delay(n);
writePinLow(HC595_STCP);
HC595_delay(n);
writePinHigh(HC595_STCP);
#endif
}
static inline void setPinOutput_writeLow(pin_t pin) {
ATOMIC_BLOCK_FORCEON {
setPinOutput(pin);
writePinLow(pin);
}
}
static inline void setPinInputHigh_atomic(pin_t pin) {
ATOMIC_BLOCK_FORCEON {
setPinInputHigh(pin);
}
}
static inline uint8_t readMatrixPin(pin_t pin) {
if (pin != NO_PIN) {
return readPin(pin);
} else {
return 1;
}
}
static bool select_col(uint8_t col) {
pin_t pin = col_pins[col];
if (col < 1) {
if (pin != NO_PIN) {
setPinOutput_writeLow(pin);
return true;
}
} else {
HC595_output(~(0x01 << (col - 1)));
return true;
}
return false;
}
static void unselect_col(uint8_t col) {
pin_t pin = col_pins[col];
if (col < 1) {
if (pin != NO_PIN) {
setPinInputHigh_atomic(pin);
}
} else {
if (col >= MATRIX_COLS - 1) HC595_output(0xFFFF);
}
}
static void unselect_cols(void) {
if (col_pins[0] != NO_PIN) setPinInputHigh_atomic(col_pins[0]);
HC595_output(0xFFFF);
}
void select_all_cols(void) {
if (col_pins[0] != NO_PIN) setPinOutput_writeLow(col_pins[0]);
HC595_output(0x0000);
}
void matrix_read_rows_on_col(matrix_row_t current_matrix[], uint8_t current_col) {
// Select col
if (!select_col(current_col)) { // select col
return; // skip NO_PIN col
}
HC595_delay(100);
// For each row...
for (uint8_t row_index = 0; row_index < MATRIX_ROWS; row_index++) {
// Check row pin state
if (readMatrixPin(row_pins[row_index]) == 0) {
// Pin LO, set col bit
current_matrix[row_index] |= (MATRIX_ROW_SHIFTER << current_col);
// key_pressed = true;
} else {
// Pin HI, clear col bit
current_matrix[row_index] &= ~(MATRIX_ROW_SHIFTER << current_col);
}
}
unselect_col(current_col);
HC595_delay(100);
}
void matrix_init_custom(void) {
for (uint8_t x = 0; x < MATRIX_ROWS; x++) {
if (row_pins[x] != NO_PIN) {
setPinInputHigh_atomic(row_pins[x]);
}
}
#ifdef DRIVE_SHRIFT_REGISTER_WITH_SPI
palSetPadMode(PAL_PORT(HC595_SHCP), PAL_PAD(HC595_SHCP), PAL_MODE_ALTERNATE(5) | PAL_STM32_OSPEED_HIGHEST); /* SCK */
palSetPadMode(PAL_PORT(HC595_DS), PAL_PAD(HC595_DS), PAL_MODE_ALTERNATE(5) | PAL_STM32_OSPEED_HIGHEST); /* MOSI*/
palSetPadMode(PAL_PORT(HC595_STCP), PAL_PAD(HC595_STCP), PAL_MODE_ALTERNATE(5) | PAL_STM32_OSPEED_HIGHEST); /* CS*/
spiStart(&SPID1, &hs_spicfg);
#else
setPinOutput(HC595_DS);
setPinOutput(HC595_STCP);
setPinOutput(HC595_SHCP);
#endif
unselect_cols();
}
bool matrix_scan_custom(matrix_row_t current_matrix[]) {
bool matrix_has_changed = false;
matrix_row_t curr_matrix[MATRIX_ROWS] = {0};
// Set col, read rows
for (uint8_t current_col = 0; current_col < MATRIX_COLS; current_col++) {
matrix_read_rows_on_col(curr_matrix, current_col);
}
matrix_has_changed = memcmp(current_matrix, curr_matrix, sizeof(curr_matrix)) != 0;
if (matrix_has_changed) memcpy(current_matrix, curr_matrix, sizeof(curr_matrix));
return matrix_has_changed;
}
|
