* Update to xealousbrown. 5-13ms Latency decrease, 4x scan rate improvement. (CUSTOM_MATRIX = lite) is a really great feature! * Updated Readme.md, added an extra speedhack. * More optimizations * Update keyboards/handwired/xealousbrown/rules.mk * Update keyboards/handwired/xealousbrown/rules.mkpull/8883/head
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/* | |||
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 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); | |||
asm volatile("nop"); | |||
asm volatile("nop"); | |||
matrix_row_t cols = read_cols(); | |||
changed |= (current_matrix[current_row] != cols); | |||
current_matrix[current_row] = cols; | |||
unselect_rows(); | |||
} | |||
return changed; | |||
} |