* 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; | |||||
} |