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Diffstat (limited to 'keyboards/bfake/matrix.c')
-rw-r--r-- | keyboards/bfake/matrix.c | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/keyboards/bfake/matrix.c b/keyboards/bfake/matrix.c deleted file mode 100644 index 57aa36b5f..000000000 --- a/keyboards/bfake/matrix.c +++ /dev/null @@ -1,106 +0,0 @@ -/* -Copyright 2017 Luiz Ribeiro <luizribeiro@gmail.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 <avr/io.h> -#include <util/delay.h> - -#include "matrix.h" - -#ifndef DEBOUNCE -#define DEBOUNCE 5 -#endif - -static uint8_t debouncing = DEBOUNCE; - -static matrix_row_t matrix[MATRIX_ROWS]; -static matrix_row_t matrix_debouncing[MATRIX_ROWS]; - -void matrix_init(void) { - // all outputs for rows high - DDRB = 0xFF; - PORTB = 0xFF; - // all inputs for columns - DDRA = 0x00; - DDRC &= ~(0x111111<<2); - DDRD &= ~(1<<PIND7); - // all columns are pulled-up - PORTA = 0xFF; - PORTC |= (0b111111<<2); - PORTD |= (1<<PIND7); - - // initialize matrix state: all keys off - for (uint8_t row = 0; row < MATRIX_ROWS; row++) { - matrix[row] = 0x00; - matrix_debouncing[row] = 0x00; - } -} - -void matrix_set_row_status(uint8_t row) { - DDRB = (1 << row); - PORTB = ~(1 << row); -} - -uint8_t bit_reverse(uint8_t x) { - x = ((x >> 1) & 0x55) | ((x << 1) & 0xaa); - x = ((x >> 2) & 0x33) | ((x << 2) & 0xcc); - x = ((x >> 4) & 0x0f) | ((x << 4) & 0xf0); - return x; -} - -uint8_t matrix_scan(void) { - for (uint8_t row = 0; row < MATRIX_ROWS; row++) { - matrix_set_row_status(row); - _delay_us(5); - - matrix_row_t cols = ( - // cols 0..7, PORTA 0 -> 7 - (~PINA) & 0xFF - ) | ( - // cols 8..13, PORTC 7 -> 0 - bit_reverse((~PINC) & 0xFF) << 8 - ) | ( - // col 14, PORTD 7 - ((~PIND) & (1 << PIND7)) << 7 - ); - - if (matrix_debouncing[row] != cols) { - matrix_debouncing[row] = cols; - debouncing = DEBOUNCE; - } - } - - if (debouncing) { - if (--debouncing) { - _delay_ms(1); - } else { - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - matrix[i] = matrix_debouncing[i]; - } - } - } - - matrix_scan_user(); - - return 1; -} - -inline matrix_row_t matrix_get_row(uint8_t row) { - return matrix[row]; -} - -void matrix_print(void) { -} |