Update to xealousbrown. (#8215)
* 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.mkgc_switch
Alex Ong
5 years ago
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GitHub
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92a50a386a
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/*
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Copyright 2019 Alex Ong |
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This program is free software: you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation, either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/ |
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#include <stdint.h> |
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#include <stdbool.h> |
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#include "wait.h" |
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#include "util.h" |
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#include "matrix.h" |
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#include "debounce.h" |
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#include "quantum.h" |
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/* matrix state(1:on, 0:off) */ |
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extern matrix_row_t raw_matrix[MATRIX_ROWS]; // raw values
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extern matrix_row_t matrix[MATRIX_ROWS]; // debounced values
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// matrix code
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// super fast read_cols code.
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static matrix_row_t read_cols(void) { |
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return (PINC & (1 << 6) ? 0 : (1UL << 0)) | |
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(PIND & (1 << 7) ? 0 : (1UL << 1)) | |
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(PINE & (1 << 6) ? 0 : (1UL << 2)) | |
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(PINB & (1 << 4) ? 0 : (1UL << 3)) | |
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(PINB & (1 << 5) ? 0 : (1UL << 4)) | |
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(PINB & (1 << 6) ? 0 : (1UL << 5)) | |
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(PINB & (1 << 2) ? 0 : (1UL << 6)) | |
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(PINB & (1 << 3) ? 0 : (1UL << 7)) | |
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(PINB & (1 << 1) ? 0 : (1UL << 8)) | |
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(PINF & (1 << 7) ? 0 : (1UL << 9)) | |
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(PINF & (1 << 6) ? 0 : (1UL << 10)) | |
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(PINF & (1 << 5) ? 0 : (1UL << 11)) | |
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(PINF & (1 << 4) ? 0 : (1UL << 12)); |
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} |
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static void unselect_rows(void) { |
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DDRD &= ~0b00011111; |
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PORTD &= ~0b00011111; |
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} |
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static void select_row(uint8_t row) { |
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switch (row) { |
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case 0: |
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DDRD |= (1 << 3); |
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PORTD &= ~(1 << 3); |
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break; |
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case 1: |
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DDRD |= (1 << 2); |
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PORTD &= ~(1 << 2); |
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break; |
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case 2: |
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DDRD |= (1 << 1); |
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PORTD &= ~(1 << 1); |
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break; |
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case 3: |
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DDRD |= (1 << 0); |
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PORTD &= ~(1 << 0); |
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break; |
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case 4: |
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DDRD |= (1 << 4); |
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PORTD &= ~(1 << 4); |
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break; |
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} |
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} |
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static void init_pins(void) { |
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DDRC &= ~(1 << 6); |
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PORTC |= (1 << 6); |
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DDRD &= ~(1 << 7); |
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PORTD |= (1 << 7); |
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DDRE &= ~(1 << 6); |
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PORTE |= (1 << 6); |
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DDRB &= ~(1 << 4 | 1 << 5 | 1 << 6 | 1 << 2 | 1 << 3 | 1 << 1); |
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PORTB |= (1 << 4 | 1 << 5 | 1 << 6 | 1 << 2 | 1 << 3 | 1 << 1); |
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DDRF &= ~(1 << 7 | 1 << 6 | 1 << 5 | 1 << 4); |
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PORTF |= (1 << 7 | 1 << 6 | 1 << 5 | 1 << 4); |
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} |
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// Only need to init the pins. Debounce / raw matrix are initialized already for us.
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void matrix_init_custom(void) { |
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// initialize key pins
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init_pins(); |
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} |
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// Only need to scan the result into current_matrix, and return changed.
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uint8_t matrix_scan_custom(matrix_row_t current_matrix[]) { |
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bool changed = false; |
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// Set row, read cols
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for (uint8_t current_row = 0; current_row < MATRIX_ROWS; current_row++) { |
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select_row(current_row); |
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asm volatile("nop"); |
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asm volatile("nop"); |
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matrix_row_t cols = read_cols(); |
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changed |= (current_matrix[current_row] != cols); |
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current_matrix[current_row] = cols; |
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unselect_rows(); |
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} |
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return changed; |
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} |
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