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- /*
- Copyright 2011,2012 Jun Wako <[email protected]>
-
- 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 "util.h"
- #include "debug.h"
- #include "host.h"
- #include "led.h"
- #include "m0110.h"
- #include "matrix.h"
-
-
- #define CAPS 0x39
- #define CAPS_BREAK (CAPS | 0x80)
- #define ROW(key) ((key)>>3&0x0F)
- #define COL(key) ((key)&0x07)
-
-
- static bool is_modified = false;
-
- // matrix state buffer(1:on, 0:off)
- static uint8_t *matrix;
- static uint8_t _matrix0[MATRIX_ROWS];
-
- static void register_key(uint8_t key);
-
-
- inline
- uint8_t matrix_rows(void)
- {
- return MATRIX_ROWS;
- }
-
- inline
- uint8_t matrix_cols(void)
- {
- return MATRIX_COLS;
- }
-
- void matrix_init(void)
- {
- m0110_init();
- // initialize matrix state: all keys off
- for (uint8_t i=0; i < MATRIX_ROWS; i++) _matrix0[i] = 0x00;
- matrix = _matrix0;
- return;
- }
-
- uint8_t matrix_scan(void)
- {
- uint8_t key;
-
- is_modified = false;
- key = m0110_recv_key();
-
- if (key == M0110_NULL) {
- return 0;
- } else if (key == M0110_ERROR) {
- return 0;
- } else {
- is_modified = true;
- register_key(key);
- }
-
- if (debug_enable) {
- print("["); phex(key); print("]\n");
- }
- return 1;
- }
-
- bool matrix_is_modified(void)
- {
- return is_modified;
- }
-
- inline
- bool matrix_has_ghost(void)
- {
- return false;
- }
-
- inline
- bool matrix_is_on(uint8_t row, uint8_t col)
- {
- return (matrix[row] & (1<<col));
- }
-
- inline
- uint8_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));
- print("\n");
- }
- }
-
- uint8_t matrix_key_count(void)
- {
- uint8_t count = 0;
- for (uint8_t i = 0; i < MATRIX_ROWS; i++) {
- count += bitpop(matrix[i]);
- }
- return count;
- }
-
- inline
- static void register_key(uint8_t key)
- {
- if (key&0x80) {
- matrix[ROW(key)] &= ~(1<<COL(key));
- } else {
- matrix[ROW(key)] |= (1<<COL(key));
- }
- }
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