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Diffstat (limited to 'keyboard/lufa/matrix.c')
| -rw-r--r-- | keyboard/lufa/matrix.c | 271 |
1 files changed, 0 insertions, 271 deletions
diff --git a/keyboard/lufa/matrix.c b/keyboard/lufa/matrix.c deleted file mode 100644 index 394c3d970..000000000 --- a/keyboard/lufa/matrix.c +++ /dev/null @@ -1,271 +0,0 @@ -/* -Copyright 2011 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/>. -*/ - -/* - * scan matrix - */ -#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" - - -#if (MATRIX_COLS > 16) -# error "MATRIX_COLS must not exceed 16" -#endif -#if (MATRIX_ROWS > 255) -# error "MATRIX_ROWS must not exceed 255" -#endif - - -#ifndef DEBOUNCE -# define DEBOUNCE 0 -#endif -static uint8_t debouncing = DEBOUNCE; - -// matrix state buffer(1:on, 0:off) -#if (MATRIX_COLS <= 8) -static uint8_t *matrix; -static uint8_t *matrix_prev; -static uint8_t _matrix0[MATRIX_ROWS]; -static uint8_t _matrix1[MATRIX_ROWS]; -#else -static uint16_t *matrix; -static uint16_t *matrix_prev; -static uint16_t _matrix0[MATRIX_ROWS]; -static uint16_t _matrix1[MATRIX_ROWS]; -#endif - -#ifdef MATRIX_HAS_GHOST -static bool matrix_has_ghost_in_row(uint8_t row); -#endif -static uint8_t read_col(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) -{ - // initialize row and col - unselect_rows(); - // Input with pull-up(DDR:0, PORT:1) - DDRB = 0x00; - PORTB = 0xFF; - - // initialize matrix state: all keys off - for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00; - for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix1[i] = 0x00; - matrix = _matrix0; - matrix_prev = _matrix1; -} - -uint8_t matrix_scan(void) -{ - if (!debouncing) { - uint8_t *tmp = matrix_prev; - matrix_prev = matrix; - matrix = tmp; - } - - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - unselect_rows(); - select_row(i); - _delay_us(30); // without this wait read unstable value. - if (matrix[i] != (uint8_t)~read_col()) { - matrix[i] = (uint8_t)~read_col(); - if (debouncing) { - debug("bounce!: "); debug_hex(debouncing); print("\n"); - } - debouncing = DEBOUNCE; - } - } - unselect_rows(); - - if (debouncing) { - debouncing--; - } - - return 1; -} - -bool matrix_is_modified(void) -{ - if (debouncing) return false; - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - if (matrix[i] != matrix_prev[i]) { - return true; - } - } - return false; -} - -inline -bool matrix_has_ghost(void) -{ -#ifdef MATRIX_HAS_GHOST - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { - if (matrix_has_ghost_in_row(i)) - return true; - } -#endif - return false; -} - -inline -bool matrix_is_on(uint8_t row, uint8_t col) -{ - return (matrix[row] & (1<<col)); -} - -inline -#if (MATRIX_COLS <= 8) -uint8_t matrix_get_row(uint8_t row) -#else -uint16_t matrix_get_row(uint8_t row) -#endif -{ - return matrix[row]; -} - -void matrix_print(void) -{ - print("\nr/c 01234567\n"); - for (uint8_t row = 0; row < matrix_rows(); row++) { - phex(row); print(": "); -#if (MATRIX_COLS <= 8) - pbin_reverse(matrix_get_row(row)); -#else - pbin_reverse16(matrix_get_row(row)); -#endif -#ifdef MATRIX_HAS_GHOST - if (matrix_has_ghost_in_row(row)) { - print(" <ghost"); - } -#endif - print("\n"); - } -} - -uint8_t matrix_key_count(void) -{ - uint8_t count = 0; - for (uint8_t i = 0; i < MATRIX_ROWS; i++) { -#if (MATRIX_COLS <= 8) - count += bitpop(matrix[i]); -#else - count += bitpop16(matrix[i]); -#endif - } - return count; -} - -#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]) == matrix[row]) - return true; - } - return false; -} -#endif - -inline -static uint8_t read_col(void) -{ - return PINB; -} - -inline -static void unselect_rows(void) -{ - // Hi-Z(DDR:0, PORT:0) to unselect - DDRC &= ~0b01000000; // PC: 6 - PORTC &= ~0b11000000; - DDRD &= ~0b11100111; // PD: 7,6,5,2,1,0 - PORTD &= ~0b11000111; - DDRF &= ~0b11000000; // PF: 7,6 - PORTF &= ~0b11000000; -} - -inline -static void select_row(uint8_t row) -{ - // Output low(DDR:1, PORT:0) to select - // row: 0 1 2 3 4 5 6 7 8 - // pin: PD0, PD5, PD7, PF6, PD6, PD1, PD2, PC6, PF7 - switch (row) { - case 0: - DDRD |= (1<<0); - PORTD &= ~(1<<0); - break; - case 1: - DDRD |= (1<<5); - PORTD &= ~(1<<5); - break; - case 2: - DDRD |= (1<<7); - PORTD &= ~(1<<7); - break; - case 3: - DDRF |= (1<<6); - PORTF &= ~(1<<6); - break; - case 4: - DDRD |= (1<<6); - PORTD &= ~(1<<6); - break; - case 5: - DDRD |= (1<<1); - PORTD &= ~(1<<1); - break; - case 6: - DDRD |= (1<<2); - PORTD &= ~(1<<2); - break; - case 7: - DDRC |= (1<<6); - PORTC &= ~(1<<6); - break; - case 8: - DDRF |= (1<<7); - PORTF &= ~(1<<7); - break; - } -} |