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-rw-r--r--macway/matrix.c271
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diff --git a/macway/matrix.c b/macway/matrix.c
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--- a/macway/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 &= ~0b11000000; // PC: 7,6
- PORTC &= ~0b11000000;
- DDRD &= ~0b11000111; // PD: 7,6,2,1,0
- 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, PC7, PD7, PF6, PD6, PD1, PD2, PC6, PF7
- switch (row) {
- case 0:
- DDRD |= (1<<0);
- PORTD &= ~(1<<0);
- break;
- case 1:
- DDRC |= (1<<7);
- PORTC &= ~(1<<7);
- 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;
- }
-}