You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
115 lines
3.5 KiB
115 lines
3.5 KiB
/*
|
|
Copyright 2019 Alex Ong
|
|
|
|
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 "wait.h"
|
|
#include "util.h"
|
|
#include "matrix.h"
|
|
#include "debounce.h"
|
|
#include "quantum.h"
|
|
|
|
/* matrix state(1:on, 0:off) */
|
|
extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
|
|
extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values
|
|
|
|
// matrix code
|
|
// super fast read_cols code.
|
|
static inline matrix_row_t read_cols(void) {
|
|
return (PINC & (1 << 6) ? 0 : (1UL << 0)) |
|
|
(PIND & (1 << 7) ? 0 : (1UL << 1)) |
|
|
(PINE & (1 << 6) ? 0 : (1UL << 2)) |
|
|
(PINB & (1 << 4) ? 0 : (1UL << 3)) |
|
|
(PINB & (1 << 5) ? 0 : (1UL << 4)) |
|
|
(PINB & (1 << 6) ? 0 : (1UL << 5)) |
|
|
(PINB & (1 << 2) ? 0 : (1UL << 6)) |
|
|
(PINB & (1 << 3) ? 0 : (1UL << 7)) |
|
|
(PINB & (1 << 1) ? 0 : (1UL << 8)) |
|
|
(PINF & (1 << 7) ? 0 : (1UL << 9)) |
|
|
(PINF & (1 << 6) ? 0 : (1UL << 10)) |
|
|
(PINF & (1 << 5) ? 0 : (1UL << 11)) |
|
|
(PINF & (1 << 4) ? 0 : (1UL << 12));
|
|
}
|
|
|
|
static void unselect_rows(void) {
|
|
DDRD &= ~0b00011111;
|
|
PORTD &= ~0b00011111;
|
|
}
|
|
|
|
static void select_row(uint8_t row) {
|
|
switch (row) {
|
|
case 0:
|
|
DDRD |= (1 << 3);
|
|
PORTD &= ~(1 << 3);
|
|
break;
|
|
case 1:
|
|
DDRD |= (1 << 2);
|
|
PORTD &= ~(1 << 2);
|
|
break;
|
|
case 2:
|
|
DDRD |= (1 << 1);
|
|
PORTD &= ~(1 << 1);
|
|
break;
|
|
case 3:
|
|
DDRD |= (1 << 0);
|
|
PORTD &= ~(1 << 0);
|
|
break;
|
|
case 4:
|
|
DDRD |= (1 << 4);
|
|
PORTD &= ~(1 << 4);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void init_pins(void) {
|
|
DDRC &= ~(1 << 6);
|
|
PORTC |= (1 << 6);
|
|
DDRD &= ~(1 << 7);
|
|
PORTD |= (1 << 7);
|
|
DDRE &= ~(1 << 6);
|
|
PORTE |= (1 << 6);
|
|
DDRB &= ~(1 << 4 | 1 << 5 | 1 << 6 | 1 << 2 | 1 << 3 | 1 << 1);
|
|
PORTB |= (1 << 4 | 1 << 5 | 1 << 6 | 1 << 2 | 1 << 3 | 1 << 1);
|
|
DDRF &= ~(1 << 7 | 1 << 6 | 1 << 5 | 1 << 4);
|
|
PORTF |= (1 << 7 | 1 << 6 | 1 << 5 | 1 << 4);
|
|
}
|
|
|
|
// Only need to init the pins. Debounce / raw matrix are initialized already for us.
|
|
void matrix_init_custom(void) {
|
|
// initialize key pins
|
|
init_pins();
|
|
}
|
|
|
|
// Only need to scan the result into current_matrix, and return changed.
|
|
uint8_t matrix_scan_custom(matrix_row_t current_matrix[]) {
|
|
bool changed = false;
|
|
|
|
// Set row, read cols
|
|
for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) {
|
|
select_row(current_row);
|
|
matrix_output_unselect_delay(current_row, changed);
|
|
|
|
matrix_row_t cols = read_cols();
|
|
changed |= (current_matrix[current_row] != cols);
|
|
current_matrix[current_row] = cols;
|
|
|
|
unselect_rows();
|
|
//this internally calls matrix_io_delay()
|
|
matrix_output_unselect_delay(current_row, changed);
|
|
}
|
|
|
|
return changed;
|
|
}
|