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Diffstat (limited to 'keyboard/kitten_paw/matrix.c')
| -rw-r--r-- | keyboard/kitten_paw/matrix.c | 239 |
1 files changed, 0 insertions, 239 deletions
diff --git a/keyboard/kitten_paw/matrix.c b/keyboard/kitten_paw/matrix.c deleted file mode 100644 index 08d64c5f4c..0000000000 --- a/keyboard/kitten_paw/matrix.c +++ /dev/null @@ -1,239 +0,0 @@ -/* -Copyright 2014 Ralf Schmitt <ralf@bunkertor.net> - -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 <avr/io.h> -#include <util/delay.h> -#include "print.h" -#include "debug.h" -#include "util.h" -#include "matrix.h" - -#ifndef DEBOUNCE -# define DEBOUNCE 0 -#endif -static uint8_t debouncing = DEBOUNCE; - -static matrix_row_t matrix[MATRIX_ROWS]; -static matrix_row_t matrix_debouncing[MATRIX_ROWS]; - -static uint8_t read_rows(void); -static void init_rows(void); -static void unselect_cols(void); -static void select_col(uint8_t col); - -inline uint8_t matrix_rows(void) -{ - return MATRIX_ROWS; -} - -inline uint8_t matrix_cols(void) -{ - return MATRIX_COLS; -} - -void matrix_init(void) -{ - unselect_cols(); - init_rows(); - for (uint8_t i=0; i < MATRIX_ROWS; i++) { - matrix[i] = 0; - matrix_debouncing[i] = 0; - } -} - -uint8_t matrix_scan(void) -{ - for (uint8_t col = 0; col < MATRIX_COLS; col++) { - select_col(col); - _delay_us(3); - uint8_t rows = read_rows(); - for (uint8_t row = 0; row < MATRIX_ROWS; row++) { - bool prev_bit = matrix_debouncing[row] & ((matrix_row_t)1<<col); - bool curr_bit = rows & (1<<row); - if (prev_bit != curr_bit) { - matrix_debouncing[row] ^= ((matrix_row_t)1<<col); - debouncing = DEBOUNCE; - } - } - unselect_cols(); - } - - if (debouncing) { - if (--debouncing) { - _delay_ms(1); - } else { - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - matrix[i] = matrix_debouncing[i]; - } - } - } - - return 1; -} - -bool matrix_is_modified(void) -{ - if (debouncing) return false; - return true; -} - -inline bool matrix_is_on(uint8_t row, uint8_t col) -{ - return (matrix[row] & ((matrix_row_t)1<<col)); -} - -inline matrix_row_t matrix_get_row(uint8_t row) -{ - return matrix[row]; -} - -void matrix_print(void) -{ - print("\nr/c 0123456789ABCDEF\n"); - for (uint8_t row = 0; row < MATRIX_ROWS; row++) { - xprintf("%02X: %032lb\n", row, bitrev32(matrix_get_row(row))); - } -} - -uint8_t matrix_key_count(void) -{ - uint8_t count = 0; - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - count += bitpop32(matrix[i]); - } - return count; -} - -/* Row pin configuration - * - * row: 0 1 2 3 4 5 6 7 - * pin: PC2 PB1 PB2 PB3 PC7 PB4 PB5 PB6 - * - */ -static void init_rows(void) -{ - DDRC &= ~0b10000100; - DDRB &= ~0b01111110; - PORTC |= 0b10000100; - PORTB |= 0b01111110; -} - -static uint8_t read_rows(void) -{ - return (PINC&(1<<2) ? 0 : (1<<0)) | - (PINB&(1<<1) ? 0 : (1<<1)) | - (PINB&(1<<2) ? 0 : (1<<2)) | - (PINB&(1<<3) ? 0 : (1<<3)) | - (PINC&(1<<7) ? 0 : (1<<4)) | - (PINB&(1<<4) ? 0 : (1<<5)) | - (PINB&(1<<5) ? 0 : (1<<6)) | - (PINB&(1<<6) ? 0 : (1<<7)); -} - -/* These columns uses two 74HC42 4 to 10 bit demultiplexers (low active). - * - * COL PD1 PD0 PD2 PD6 PD5 PD4 - * 12 1 1 0 0 0 0 - * 11 1 1 0 0 0 1 - * 10 1 1 0 0 1 0 - * 9 1 1 0 0 1 1 - * 8 1 1 0 1 0 0 - * 7 1 1 0 1 0 1 - * 6 1 1 0 1 1 0 - * 5 1 1 0 1 1 1 - * 4 1 1 1 0 0 0 - * 3 1 1 1 0 0 1 - - * COL PD2 PD6 PD1 PD0 PD5 PD4 - * 2 1 1 0 0 0 0 - * 1 1 1 0 0 0 1 - * 0 1 1 0 0 1 0 - * 17 1 1 0 0 1 1 - * 16 1 1 0 1 0 0 - * 1 1 0 1 0 1 - * 1 1 0 1 1 0 - * 15 1 1 0 1 1 1 - * 14 1 1 1 0 0 0 - * 13 1 1 1 0 0 1 - */ -static void unselect_cols(void) -{ - DDRD |= 0b01110111; - PORTD &= ~0b01110111; -} - -static void select_col(uint8_t col) -{ - switch (col) { - case 0: - PORTD |= (1<<5) | (1<<6) | (1<<2); - break; - case 1: - PORTD |= (1<<4) | (1<<6) | (1<<2); - break; - case 2: - PORTD |= (1<<6) | (1<<2); - break; - case 3: - PORTD |= (1<<4) | (1<<2) | (1<<0) | (1<<1); - break; - case 4: - PORTD |= (1<<2) | (1<<0) | (1<<1); - break; - case 5: - PORTD |= (1<<4) | (1<<5) | (1<<6) | (1<<0) | (1<<1); - break; - case 6: - PORTD |= (1<<5) | (1<<6) | (1<<0) | (1<<1); - break; - case 7: - PORTD |= (1<<4) | (1<<6) | (1<<0) | (1<<1); - break; - case 8: - PORTD |= (1<<6) | (1<<0) | (1<<1); - break; - case 9: - PORTD |= (1<<4) | (1<<5) | (1<<0) | (1<<1); - break; - case 10: - PORTD |= (1<<5) | (1<<0) | (1<<1); - break; - case 11: - PORTD |= (1<<4) | (1<<0) | (1<<1); - break; - case 12: - PORTD |= (1<<0) | (1<<1); - break; - case 13: - PORTD |= (1<<4) | (1<<1) | (1<<6) | (1<<2); - break; - case 14: - PORTD |= (1<<1) | (1<<6) | (1<<2); - break; - case 15: - PORTD |= (1<<4) | (1<<5) | (1<<0) | (1<<6) | (1<<2); - break; - case 16: - PORTD |= (1<<0) | (1<<6) | (1<<2); - break; - case 17: - PORTD |= (1<<4) | (1<<5) | (1<<6) | (1<<2); - break; - } -} |