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Diffstat (limited to 'keyboard/hbkb/matrix.c')
-rw-r--r-- | keyboard/hbkb/matrix.c | 206 |
1 files changed, 0 insertions, 206 deletions
diff --git a/keyboard/hbkb/matrix.c b/keyboard/hbkb/matrix.c deleted file mode 100644 index ee32312d9a..0000000000 --- a/keyboard/hbkb/matrix.c +++ /dev/null @@ -1,206 +0,0 @@ -/* -Copyright 2012 Jun Wako <wakojun@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 <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" - - -/* - * Happy Buckling Keyboard(IBM Model M mod) - * - * Pin usage: - * COL: PD0-7 - * ROW: PB0-7, PF4-7 - */ -#ifndef DEBOUNCE -# define DEBOUNCE 10 -#endif -static uint8_t debouncing = DEBOUNCE; - -/* matrix state(1:on, 0:off) */ -static matrix_row_t matrix[MATRIX_ROWS]; -static matrix_row_t matrix_debouncing[MATRIX_ROWS]; - -#ifdef MATRIX_HAS_GHOST -static bool matrix_has_ghost_in_row(uint8_t row); -#endif -static matrix_row_t read_cols(void); -static void unselect_rows(void); -static void select_row(uint8_t row); - - -inline -uint8_t matrix_rows(void) -{ - return MATRIX_ROWS; -} - -inline -uint8_t matrix_cols(void) -{ - return MATRIX_COLS; -} - -void matrix_init(void) -{ - // JTAG disable for PORT F. write JTD bit twice within four cycles. - MCUCR |= (1<<JTD); - MCUCR |= (1<<JTD); - - // initialize rows - unselect_rows(); - - // initialize columns to input with pull-up(DDR:0, PORT:1) - DDRD = 0x00; - PORTD = 0xFF; - - // initialize matrix state: all keys off - for (uint8_t i=0; i < MATRIX_ROWS; i++) { - matrix[i] = 0; - matrix_debouncing[i] = 0; - } -} - -uint8_t matrix_scan(void) -{ - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - select_row(i); - _delay_us(30); // without this wait read unstable value. - matrix_row_t cols = read_cols(); - if (matrix_debouncing[i] != cols) { - matrix_debouncing[i] = cols; - if (debouncing) { - debug("bounce!: "); debug_hex(debouncing); debug("\n"); - } - debouncing = DEBOUNCE; - } - unselect_rows(); - } - - 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 01234567\n"); - for (uint8_t row = 0; row < matrix_rows(); row++) { - phex(row); print(": "); - pbin_reverse(matrix_get_row(row)); -#ifdef MATRIX_HAS_GHOST - if (matrix_has_ghost_in_row(row)) { - print(" <ghost"); - } -#endif - print("\n"); - } -} - -#ifdef MATRIX_HAS_GHOST -inline -static bool matrix_has_ghost_in_row(uint8_t row) -{ - // no ghost exists in case less than 2 keys on - if (((matrix[row] - 1) & matrix[row]) == 0) - return false; - - // ghost exists in case same state as other row - for (uint8_t i=0; i < MATRIX_ROWS; i++) { - if (i != row && (matrix[i] & matrix[row])) - return true; - } - return false; -} -#endif - -inline -static matrix_row_t read_cols(void) -{ - return ~PIND; -} - -inline -static void unselect_rows(void) -{ - // Hi-Z(DDR:0, PORT:0) to unselect - DDRB &= ~0b11111111; - PORTB &= ~0b11111111; - DDRF &= ~0b11110000; - PORTF &= ~0b11110000; -} - -inline -static void select_row(uint8_t row) -{ - // Output low(DDR:1, PORT:0) to select - switch (row) { - case 0: - case 1: - case 2: - case 3: - case 4: - case 5: - case 6: - case 7: - DDRB |= (1<<row); - PORTB &= ~(1<<row); - break; - case 8: - DDRF |= (1<<4); - PORTF &= ~(1<<4); - break; - case 9: - case 10: - case 11: - DDRF |= (1<<(row-4)); - PORTF &= ~(1<<(row-4)); - break; - } -} |